The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/dev/ic/uhavar.h

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    1 /*      $NetBSD: uhavar.h,v 1.14 2005/12/11 12:21:29 christos 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 *);

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