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uhavar.h revision 1.13 
      1 /*	$NetBSD: uhavar.h,v 1.13 2005/02/04 02:10:37 perry 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 Charles M. Hannum and by Jason R. Thorpe of the Numerical Aerospace
      9  * Simulation Facility, 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 #include <sys/queue.h>
     41 
     42 #define UHA_MSCP_MAX	32	/* store up to 32 MSCPs at one time */
     43 #define	MSCP_HASH_SIZE	32	/* hash table size for phystokv */
     44 #define	MSCP_HASH_SHIFT	9
     45 #define MSCP_HASH(x)	((((long)(x))>>MSCP_HASH_SHIFT) & (MSCP_HASH_SIZE - 1))
     46 
     47 struct uha_softc {
     48 	struct device sc_dev;
     49 
     50 	bus_space_tag_t sc_iot;
     51 	bus_space_handle_t sc_ioh;
     52 	bus_dma_tag_t	sc_dmat;
     53 	void *sc_ih;
     54 
     55 	int sc_dmaflags;	/* bus-specific DMA map creation flags */
     56 
     57 	void (*start_mbox)(struct uha_softc *, struct uha_mscp *);
     58 	int (*poll)(struct uha_softc *, struct scsipi_xfer *, int);
     59 	void (*init)(struct uha_softc *);
     60 
     61 	bus_dmamap_t sc_dmamap_mscp;	/* maps the mscps */
     62 	struct uha_mscp *sc_mscps;	/* all our mscps */
     63 
     64 	struct uha_mscp *sc_mscphash[MSCP_HASH_SIZE];
     65 	TAILQ_HEAD(, uha_mscp) sc_free_mscp;
     66 	int sc_nummscps;
     67 
     68 	struct scsipi_adapter sc_adapter;
     69 	struct scsipi_channel sc_channel;
     70 };
     71 
     72 /*
     73  * Offset of an MSCP from the beginning of the MSCP DMA mapping.
     74  */
     75 #define	UHA_MSCP_OFF(m)	(((u_long)(m)) - ((u_long)&sc->sc_mscps[0]))
     76 
     77 struct uha_probe_data {
     78 	int sc_irq, sc_drq;
     79 	int sc_scsi_dev;
     80 };
     81 
     82 void	uha_attach(struct uha_softc *, struct uha_probe_data *);
     83 void	uha_timeout(void *arg);
     84 struct	uha_mscp *uha_mscp_phys_kv(struct uha_softc *, u_long);
     85 void	uha_done(struct uha_softc *, struct uha_mscp *);
     86