1 /* $NetBSD: dcr.c,v 1.3 2022/03/10 00:14:16 riastradh Exp $ */
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: dcr.c,v 1.3 2022/03/10 00:14:16 riastradh Exp $");
41
42 #include <sys/types.h>
43 #include <sys/bus.h>
44 #include <evbppc/virtex/dcr.h>
45
46 int
dcr_map(bus_space_tag_t bst,bus_addr_t addr,bus_size_t size,int flags,bus_space_handle_t * bsh)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
dcr_unmap(bus_space_tag_t bst,bus_space_handle_t bsh,bus_size_t size)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
dcr_subregion(bus_space_tag_t bst,bus_space_handle_t bsh,bus_size_t offset,bus_size_t size,bus_space_handle_t * bshp)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 }
69
70 void
dcr_barrier(bus_space_tag_t bst,bus_space_handle_t bsh,bus_size_t offset,bus_size_t size,int flags)71 dcr_barrier(bus_space_tag_t bst, bus_space_handle_t bsh, bus_size_t offset,
72 bus_size_t size, int flags)
73 {
74 /* XXX EIEIO? */
75 }
76