sys/arch/evbppc/virtex/dcr.c

   1 /*      $NetBSD$ */
   2
   3 /*
   4  * Copyright (c) 2006 Jachym Holecek
   5  * All rights reserved.
   6  *
   7  * Written for DFC Design, s.r.o.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  *
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  *
  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 AUTHOR ``AS IS'' AND ANY EXPRESS OR
  21  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  22  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  23  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  24  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  25  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  29  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 /*
  33  * DCR bus space size & base addresses are hardcoded and runtime-checked,
  34  * so there's no point in maintaning extents etc -- just provide placebo
  35  * implementations so that we can use bus_space as usual (add more as
  36  * needed).
  37  */
  38
  39 #include <sys/cdefs.h>
  40 __KERNEL_RCSID(0, "$NetBSD$");
  41
  42 #include <sys/types.h>
  43 #include <machine/bus.h>
  44 #include <evbppc/virtex/dcr.h>
  45
  46 int
  47 dcr_map(bus_space_tag_t bst, bus_addr_t addr, bus_size_t size, int flags,
  48     bus_space_handle_t *bsh)
  49 {
  50         *bsh = addr;
  51
  52         return (0);
  53 }
  54
  55 void
  56 dcr_unmap(bus_space_tag_t bst, bus_space_handle_t bsh, bus_size_t size)
  57 {
  58         /* Nothing to do. */
  59 }
  60
  61 int
  62 dcr_subregion(bus_space_tag_t bst, bus_space_handle_t bsh, bus_size_t offset,
  63     bus_size_t size, bus_space_handle_t *bshp)
  64 {
  65         *bshp = bsh + offset;
  66
  67         return (0);
  68 }