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bhavar.h revision 1.9 
      1 /*	$NetBSD: bhavar.h,v 1.9 1997/11/04 05:58:27 thorpej Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1994, 1996, 1997 Charles M. Hannum.  All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  * 3. All advertising materials mentioning features or use of this software
     15  *    must display the following acknowledgement:
     16  *	This product includes software developed by Charles M. Hannum.
     17  * 4. The name of the author may not be used to endorse or promote products
     18  *    derived from this software without specific prior written permission.
     19  *
     20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     21  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     22  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     23  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     24  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     25  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     29  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/queue.h>
     33 
     34 /*
     35  * Mail box defs  etc.
     36  * these could be bigger but we need the bha_softc to fit on a single page..
     37  */
     38 #define BHA_MBX_SIZE	32	/* mail box size  (MAX 255 MBxs) */
     39 				/* don't need that many really */
     40 #define BHA_CCB_MAX	32	/* store up to 32 CCBs at one time */
     41 #define	CCB_HASH_SIZE	32	/* hash table size for phystokv */
     42 #define	CCB_HASH_SHIFT	9
     43 #define CCB_HASH(x)	((((long)(x))>>CCB_HASH_SHIFT) & (CCB_HASH_SIZE - 1))
     44 
     45 #define bha_nextmbx(wmb, mbx, mbio) \
     46 	if ((wmb) == &(mbx)->mbio[BHA_MBX_SIZE - 1])	\
     47 		(wmb) = &(mbx)->mbio[0];		\
     48 	else						\
     49 		(wmb)++;
     50 
     51 struct bha_mbx {
     52 	struct bha_mbx_out mbo[BHA_MBX_SIZE];
     53 	struct bha_mbx_in mbi[BHA_MBX_SIZE];
     54 	struct bha_mbx_out *cmbo;	/* Collection Mail Box out */
     55 	struct bha_mbx_out *tmbo;	/* Target Mail Box out */
     56 	struct bha_mbx_in *tmbi;	/* Target Mail Box in */
     57 };
     58 
     59 struct bha_softc {
     60 	struct device sc_dev;
     61 
     62 	bus_space_tag_t sc_iot;
     63 	bus_space_handle_t sc_ioh;
     64 	bus_dma_tag_t sc_dmat;
     65 	bus_dmamap_t sc_dmamap_mbox;	/* maps the mailbox */
     66 	int sc_dmaflags;		/* bus-specific dma map flags */
     67 	void *sc_ih;
     68 
     69 	struct bha_mbx *sc_mbx;		/* all our mailboxes */
     70 #define	wmbx	(sc->sc_mbx)
     71 	struct bha_ccb *sc_ccbhash[CCB_HASH_SIZE];
     72 	TAILQ_HEAD(, bha_ccb) sc_free_ccb, sc_waiting_ccb;
     73 	int sc_numccbs, sc_mbofull;
     74 	struct scsipi_link sc_link;	/* prototype for devs */
     75 
     76 	LIST_HEAD(, scsipi_xfer) sc_queue;
     77 	struct scsipi_xfer *sc_queuelast;
     78 
     79 	char sc_model[7],
     80 	     sc_firmware[6];
     81 };
     82 
     83 struct bha_probe_data {
     84 	int sc_irq, sc_drq;
     85 	int sc_scsi_dev;		/* adapters scsi id */
     86 	int sc_iswide;			/* adapter is wide */
     87 };
     88 
     89 #define	ISWIDE(sc)	(sc->sc_link.scsipi_scsi.max_target >= 8)
     90 
     91 int	bha_find __P((bus_space_tag_t, bus_space_handle_t,
     92 	    struct bha_probe_data *));
     93 void	bha_attach __P((struct bha_softc *, struct bha_probe_data *));
     94 int	bha_intr __P((void *));
     95 
     96 int	bha_disable_isacompat __P((struct bha_softc *));
     97 void	bha_inquire_setup_information __P((struct bha_softc *));
     98