Home | History | Annotate | Line # | Download | only in ic 
      1 /*	$NetBSD: uhavar.h,v 1.16 2012/10/27 17:18:23 chs 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  *
     20  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     22  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     23  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     24  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     30  * POSSIBILITY OF SUCH DAMAGE.
     31  */
     32 
     33 #include <sys/queue.h>
     34 
     35 #define UHA_MSCP_MAX	32	/* store up to 32 MSCPs at one time */
     36 #define	MSCP_HASH_SIZE	32	/* hash table size for phystokv */
     37 #define	MSCP_HASH_SHIFT	9
     38 #define MSCP_HASH(x)	((((long)(x))>>MSCP_HASH_SHIFT) & (MSCP_HASH_SIZE - 1))
     39 
     40 struct uha_softc {
     41 	device_t sc_dev;
     42 
     43 	bus_space_tag_t sc_iot;
     44 	bus_space_handle_t sc_ioh;
     45 	bus_dma_tag_t	sc_dmat;
     46 	void *sc_ih;
     47 
     48 	int sc_dmaflags;	/* bus-specific DMA map creation flags */
     49 
     50 	void (*start_mbox)(struct uha_softc *, struct uha_mscp *);
     51 	int (*poll)(struct uha_softc *, struct scsipi_xfer *, int);
     52 	void (*init)(struct uha_softc *);
     53 
     54 	bus_dmamap_t sc_dmamap_mscp;	/* maps the mscps */
     55 	struct uha_mscp *sc_mscps;	/* all our mscps */
     56 
     57 	struct uha_mscp *sc_mscphash[MSCP_HASH_SIZE];
     58 	TAILQ_HEAD(, uha_mscp) sc_free_mscp;
     59 	int sc_nummscps;
     60 
     61 	struct scsipi_adapter sc_adapter;
     62 	struct scsipi_channel sc_channel;
     63 };
     64 
     65 /*
     66  * Offset of an MSCP from the beginning of the MSCP DMA mapping.
     67  */
     68 #define	UHA_MSCP_OFF(m)	(((u_long)(m)) - ((u_long)&sc->sc_mscps[0]))
     69 
     70 struct uha_probe_data {
     71 	int sc_irq, sc_drq;
     72 	int sc_scsi_dev;
     73 };
     74 
     75 void	uha_attach(struct uha_softc *, struct uha_probe_data *);
     76 void	uha_timeout(void *arg);
     77 struct	uha_mscp *uha_mscp_phys_kv(struct uha_softc *, u_long);
     78 void	uha_done(struct uha_softc *, struct uha_mscp *);
     79