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uhavar.h revision 1.8 
      1 /*	$NetBSD: uhavar.h,v 1.8 1998/02/17 03:02:56 thorpej Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1998 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
      9  * NASA Ames Research Center.
     10  *
     11  * Redistribution and use in source and binary forms, with or without
     12  * modification, are permitted provided that the following conditions
     13  * are met:
     14  * 1. Redistributions of source code must retain the above copyright
     15  *    notice, this list of conditions and the following disclaimer.
     16  * 2. Redistributions in binary form must reproduce the above copyright
     17  *    notice, this list of conditions and the following disclaimer in the
     18  *    documentation and/or other materials provided with the distribution.
     19  * 3. All advertising materials mentioning features or use of this software
     20  *    must display the following acknowledgement:
     21  *	This product includes software developed by the NetBSD
     22  *	Foundation, Inc. and its contributors.
     23  * 4. Neither the name of The NetBSD Foundation nor the names of its
     24  *    contributors may be used to endorse or promote products derived
     25  *    from this software without specific prior written permission.
     26  *
     27  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     28  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     29  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     30  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     31  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     32  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     33  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     34  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     35  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     36  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     37  * POSSIBILITY OF SUCH DAMAGE.
     38  */
     39 
     40 /*
     41  * Copyright (c) 1994, 1996, 1997 Charles M. Hannum.  All rights reserved.
     42  *
     43  * Redistribution and use in source and binary forms, with or without
     44  * modification, are permitted provided that the following conditions
     45  * are met:
     46  * 1. Redistributions of source code must retain the above copyright
     47  *    notice, this list of conditions and the following disclaimer.
     48  * 2. Redistributions in binary form must reproduce the above copyright
     49  *    notice, this list of conditions and the following disclaimer in the
     50  *    documentation and/or other materials provided with the distribution.
     51  * 3. All advertising materials mentioning features or use of this software
     52  *    must display the following acknowledgement:
     53  *	This product includes software developed by Charles M. Hannum.
     54  * 4. The name of the author may not be used to endorse or promote products
     55  *    derived from this software without specific prior written permission.
     56  *
     57  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     58  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     59  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     60  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     61  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     62  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     63  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     64  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     65  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     66  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     67  */
     68 
     69 #include <sys/queue.h>
     70 
     71 #define UHA_MSCP_MAX	32	/* store up to 32 MSCPs at one time */
     72 #define	MSCP_HASH_SIZE	32	/* hash table size for phystokv */
     73 #define	MSCP_HASH_SHIFT	9
     74 #define MSCP_HASH(x)	((((long)(x))>>MSCP_HASH_SHIFT) & (MSCP_HASH_SIZE - 1))
     75 
     76 struct uha_softc {
     77 	struct device sc_dev;
     78 
     79 	bus_space_tag_t sc_iot;
     80 	bus_space_handle_t sc_ioh;
     81 	bus_dma_tag_t	sc_dmat;
     82 	void *sc_ih;
     83 
     84 	int sc_dmaflags;	/* bus-specific DMA map creation flags */
     85 
     86 	void (*start_mbox) __P((struct uha_softc *, struct uha_mscp *));
     87 	int (*poll) __P((struct uha_softc *, struct scsipi_xfer *, int));
     88 	void (*init) __P((struct uha_softc *));
     89 
     90 	bus_dmamap_t sc_dmamap_mscp;	/* maps the mscps */
     91 	struct uha_mscp *sc_mscps;	/* all our mscps */
     92 
     93 	struct uha_mscp *sc_mscphash[MSCP_HASH_SIZE];
     94 	TAILQ_HEAD(, uha_mscp) sc_free_mscp;
     95 	int sc_nummscps;
     96 	struct scsipi_link sc_link;
     97 
     98 	LIST_HEAD(, scsipi_xfer) sc_queue;
     99 	struct scsipi_xfer *sc_queuelast;
    100 };
    101 
    102 /*
    103  * Offset of an MSCP from the beginning of the MSCP DMA mapping.
    104  */
    105 #define	UHA_MSCP_OFF(m)	(((u_long)(m)) - ((u_long)&sc->sc_mscps[0]))
    106 
    107 struct uha_probe_data {
    108 	int sc_irq, sc_drq;
    109 	int sc_scsi_dev;
    110 };
    111 
    112 void	uha_attach __P((struct uha_softc *, struct uha_probe_data *));
    113 void	uha_timeout __P((void *arg));
    114 struct	uha_mscp *uha_mscp_phys_kv __P((struct uha_softc *, u_long));
    115 void	uha_done __P((struct uha_softc *, struct uha_mscp *));
    116