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adw.h revision 1.1 
      1 /*      $NetBSD: adw.h,v 1.1 1998/09/26 16:10:41 dante Exp $        */
      2 
      3 /*
      4  * Generic driver definitions and exported functions for the Advanced
      5  * Systems Inc. SCSI controllers
      6  *
      7  * Copyright (c) 1998 The NetBSD Foundation, Inc.
      8  * All rights reserved.
      9  *
     10  * Author: Baldassare Dante Profeta <dante (at) mclink.it>
     11  *
     12  * Redistribution and use in source and binary forms, with or without
     13  * modification, are permitted provided that the following conditions
     14  * are met:
     15  * 1. Redistributions of source code must retain the above copyright
     16  *    notice, this list of conditions and the following disclaimer.
     17  * 2. Redistributions in binary form must reproduce the above copyright
     18  *    notice, this list of conditions and the following disclaimer in the
     19  *    documentation and/or other materials provided with the distribution.
     20  * 3. All advertising materials mentioning features or use of this software
     21  *    must display the following acknowledgement:
     22  *        This product includes software developed by the NetBSD
     23  *        Foundation, Inc. and its contributors.
     24  * 4. Neither the name of The NetBSD Foundation nor the names of its
     25  *    contributors may be used to endorse or promote products derived
     26  *    from this software without specific prior written permission.
     27  *
     28  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     29  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     30  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     31  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     32  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     33  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     34  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     35  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     36  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     37  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     38  * POSSIBILITY OF SUCH DAMAGE.
     39  */
     40 
     41 #ifndef _ADVANSYS_WIDE_H_
     42 #define _ADVANSYS_WIDE_H_
     43 
     44 /******************************************************************************/
     45 
     46 typedef int (* ADW_ISR_CALLBACK) (ADW_SOFTC *, ADW_SCSI_REQ_Q *);
     47 typedef int (* ADW_SBRESET_CALLBACK) (ADW_SOFTC *);
     48 
     49 /* per request scatter-gather element limit  */
     50 #define ADW_MAX_SG_LIST		64
     51 
     52 /*
     53  * Scatter-Gather Definitions per request.
     54  */
     55 
     56 #define NO_OF_SG_PER_BLOCK	15
     57 
     58 /* Number of SG blocks needed. */
     59 #define ADW_NUM_SG_BLOCK \
     60 	((ADW_MAX_SG_LIST + (NO_OF_SG_PER_BLOCK - 1))/NO_OF_SG_PER_BLOCK)
     61 
     62 
     63 struct adw_ccb
     64 {
     65 	ADW_SG_BLOCK		sg_block[ADW_NUM_SG_BLOCK];
     66 	ADW_SCSI_REQ_Q		scsiq;
     67 
     68 	struct scsipi_sense_data scsi_sense;
     69 
     70 	TAILQ_ENTRY(adw_ccb)	chain;
     71 	struct scsipi_xfer	*xs;	/* the scsipi_xfer for this cmd */
     72 	int			flags;	/* see below */
     73 
     74 	int			timeout;
     75 	/*
     76 	 * This DMA map maps the buffer involved in the transfer.
     77 	 */
     78 	bus_dmamap_t		dmamap_xfer;
     79 };
     80 
     81 typedef struct adw_ccb ADW_CCB;
     82 
     83 /* flags for ADW_CCB */
     84 #define CCB_ALLOC       0x01
     85 #define CCB_ABORT       0x02
     86 #define	CCB_WATCHDOG	0x10
     87 
     88 
     89 #define ADW_MAX_CCB	16
     90 
     91 struct adw_control
     92 {
     93 	ADW_CCB	ccbs[ADW_MAX_CCB];	/* all our control blocks */
     94 };
     95 
     96 /*
     97  * Offset of a CCB from the beginning of the control DMA mapping.
     98  */
     99 #define	ADW_CCB_OFF(c)	(offsetof(struct adw_control, ccbs[0]) +	\
    100 		    (((u_long)(c)) - ((u_long)&sc->sc_control->ccbs[0])))
    101 
    102 /******************************************************************************/
    103 
    104 int adw_init __P((ADW_SOFTC *sc));
    105 void adw_attach __P((ADW_SOFTC *sc));
    106 int adw_intr __P((void *arg));
    107 
    108 /******************************************************************************/
    109 
    110 #endif /* _ADVANSYS_ADW_H_ */
    111