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      1 /*      $NetBSD: adv.h,v 1.15 2019/12/15 16:48:27 tsutsui Exp $        */
      2 
      3 /*
      4  * Generic driver definitions and exported functions for the Advanced
      5  * Systems Inc. Narrow 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  *
     21  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     22  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     23  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     24  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     25  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     26  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     27  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     28  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     29  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     30  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     31  * POSSIBILITY OF SUCH DAMAGE.
     32  */
     33 
     34 #ifndef _ADVANSYS_NARROW_H_
     35 #define _ADVANSYS_NARROW_H_
     36 
     37 /******************************************************************************/
     38 
     39 struct adv_ccb
     40 {
     41 	ASC_SG_HEAD	sghead;
     42 	ASC_SCSI_Q	scsiq;
     43 
     44 	struct scsi_sense_data scsi_sense;
     45 
     46 	struct callout ccb_watchdog;
     47 
     48 	TAILQ_ENTRY(adv_ccb) chain;
     49 	struct adv_ccb		*nexthash;
     50 	u_long			hashkey;
     51 	struct scsipi_xfer	*xs;	/* the scsipi_xfer for this cmd */
     52 	int			flags;	/* see below */
     53 
     54 	int			timeout;
     55 	/*
     56 	 * This DMA map maps the buffer involved in the transfer.
     57 	 */
     58 	bus_dmamap_t		dmamap_xfer;
     59 };
     60 
     61 typedef struct adv_ccb ADV_CCB;
     62 
     63 /* flags for ADV_CCB */
     64 #define CCB_ALLOC       0x01
     65 #define CCB_ABORT       0x02
     66 #define	CCB_WATCHDOG	0x10
     67 
     68 
     69 #define ADV_MAX_CCB	32
     70 
     71 struct adv_control
     72 {
     73 	ADV_CCB	ccbs[ADV_MAX_CCB];	/* all our control blocks */
     74 	u_int8_t overrun_buf[ASC_OVERRUN_BSIZE];
     75 };
     76 
     77 /*
     78  * Offset of a CCB from the beginning of the control DMA mapping.
     79  */
     80 #define	ADV_CCB_OFF(c)	(offsetof(struct adv_control, ccbs[0]) +	\
     81 		    (((u_long)(c)) - ((u_long)&sc->sc_control->ccbs[0])))
     82 
     83 /******************************************************************************/
     84 
     85 int adv_init(ASC_SOFTC *);
     86 void adv_attach(ASC_SOFTC *);
     87 int adv_detach(ASC_SOFTC *, int);
     88 int adv_intr(void *);
     89 ADV_CCB *adv_ccb_phys_kv(ASC_SOFTC *, u_long);
     90 
     91 /******************************************************************************/
     92 
     93 #endif /* _ADVANSYS_NARROW_H_ */
     94