sys/arch/dreamcast/dev/g2/g2busvar.h

   1 /*      $NetBSD: g2busvar.h,v 1.3 2002/12/23 09:59:25 tsutsui Exp $     */
   2
   3 /*-
   4  * Copyright (c) 2001 Marcus Comstedt
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *      This product includes software developed by Marcus Comstedt.
  18  * 4. Neither the name of The NetBSD Foundation nor the names of its
  19  *    contributors may be used to endorse or promote products derived
  20  *    from this software without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  23  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  24  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  25  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  26  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  27  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  28  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  29  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  30  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  31  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  32  * POSSIBILITY OF SUCH DAMAGE.
  33  */
  34
  35 #ifndef _DREAMCAST_G2BUSVAR_H_
  36 #define _DREAMCAST_G2BUSVAR_H_
  37
  38 #include <machine/bus.h>
  39
  40 /*
  41  * G2 driver attach arguments
  42  */
  43 struct g2bus_attach_args {
  44         bus_space_tag_t ga_memt;
  45 };
  46
  47 /*
  48  * Per-device G2 variables
  49  */
  50 struct g2busdev {
  51         struct  device *gd_dev;         /* back pointer to generic */
  52         TAILQ_ENTRY(g2busdev)
  53                 gd_bchain;              /* bus chain */
  54 };
  55
  56 /*
  57  * G2 master bus
  58  */
  59 struct g2bus_softc {
  60         struct  device sc_dev;          /* base device */
  61         struct dreamcast_bus_space sc_memt;
  62         TAILQ_HEAD(, g2busdev)
  63                 sc_subdevs;             /* list of all children */
  64 };
  65
  66 void    g2bus_bus_mem_init(struct g2bus_softc *);
  67 void    g2bus_set_bus_mem_sparse(bus_space_tag_t);
  68
  69 #endif /* _DREAMCAST_G2BUSVAR_H_ */