FreeBSD/Linux Kernel Cross Reference
sys/dev/ic/adw.h

     /*      $NetBSD: adw.h,v 1.10 2003/07/08 10:06:30 itojun Exp $        */
     
     /*
      * Generic driver definitions and exported functions for the Advanced
      * Systems Inc. SCSI controllers
      * 
      * Copyright (c) 1998, 1999, 2000 The NetBSD Foundation, Inc.
      * All rights reserved.
      *
     * Author: Baldassare Dante Profeta <dante@mclink.it>
     *
     * 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.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *        This product includes software developed by the NetBSD
     *        Foundation, Inc. and its contributors.
     * 4. Neither the name of The NetBSD Foundation nor the names of its
     *    contributors may be used to endorse or promote products derived
     *    from this software without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
     */
    
    #ifndef _ADVANSYS_WIDE_H_
    #define _ADVANSYS_WIDE_H_
    
    /******************************************************************************/
    
    typedef int (* ADW_ISR_CALLBACK) (ADW_SOFTC *, ADW_SCSI_REQ_Q *);
    typedef void (* ADW_ASYNC_CALLBACK) (ADW_SOFTC *, u_int8_t);
    
    
    /*
     * per request scatter-gather element limit
     * We could have up to 256 SG lists.
     */
    #define ADW_MAX_SG_LIST         255
    
    /* 
     * Scatter-Gather Definitions per request.
     */
    
    #define NO_OF_SG_PER_BLOCK      15
    
    /* Number of SG blocks needed. */
    #define ADW_NUM_SG_BLOCK \
            ((ADW_MAX_SG_LIST + (NO_OF_SG_PER_BLOCK - 1))/NO_OF_SG_PER_BLOCK)
    
    
    struct adw_ccb {
            ADW_SCSI_REQ_Q          scsiq;
            ADW_SG_BLOCK            sg_block[ADW_NUM_SG_BLOCK];
    
            struct scsipi_sense_data scsi_sense;
    
            TAILQ_ENTRY(adw_ccb)    chain;
            struct adw_ccb          *nexthash;
            u_int32_t               hashkey;
    
            struct scsipi_xfer      *xs;    /* the scsipi_xfer for this cmd */
            int                     flags;  /* see below */
    
            int                     timeout;
            /*
             * This DMA map maps the buffer involved in the transfer.
             */
            bus_dmamap_t            dmamap_xfer;
    };
    
    typedef struct adw_ccb ADW_CCB;
    
    /* flags for ADW_CCB */
    #define CCB_ALLOC       0x01
    #define CCB_ABORTING    0x02
    #define CCB_ABORTED     0x04
    
    
    #define ADW_MAX_CCB     63      /* Max. number commands per device (63) */
    
    struct adw_control {
            ADW_CCB         ccbs[ADW_MAX_CCB];      /* all our control blocks */
            ADW_CARRIER     *carriers;              /* all our carriers */
   };
   
   /*
    * Offset of a CCB from the beginning of the control DMA mapping.
    */
   #define ADW_CCB_OFF(c)  (offsetof(struct adw_control, ccbs[0]) +        \
                       (((u_long)(c)) - ((u_long)&sc->sc_control->ccbs[0])))
   
   /******************************************************************************/
   
   int adw_init __P((ADW_SOFTC *));
   void adw_attach __P((ADW_SOFTC *));
   int adw_intr __P((void *));
   ADW_CCB *adw_ccb_phys_kv __P((ADW_SOFTC *, u_int32_t));
   
   /******************************************************************************/
   
   #endif /* _ADVANSYS_ADW_H_ */

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