sys/dev/ic/uhavar.h

   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  *
  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         struct device 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 *);