obio_space.c revision 1.2 
1/*	$NetBSD: obio_space.c,v 1.2 2002/04/12 19:02:31 thorpej Exp $	*/
2
3/*
4 * Copyright (c) 2001, 2002 Wasabi Systems, Inc.
5 * All rights reserved.
6 *
7 * Written by Jason R. Thorpe for Wasabi Systems, Inc.
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 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 *    must display the following acknowledgement:
19 *	This product includes software developed for the NetBSD Project by
20 *	Wasabi Systems, Inc.
21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse
22 *    or promote products derived from this software without specific prior
23 *    written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
28 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
35 * POSSIBILITY OF SUCH DAMAGE.
36 */
37
38/*
39 * bus_space functions for IQ80321 on-board devices
40 */
41
42#include <sys/param.h>
43#include <sys/systm.h>
44
45#include <uvm/uvm_extern.h>
46
47#include <machine/bus.h>
48
49/* Prototypes for all the bus_space structure functions */
50bs_protos(obio);
51bs_protos(generic);
52bs_protos(bs_notimpl);
53
54/*
55 * The obio bus space tag.  This is constant for all instances, so
56 * we never have to explicitly "create" it.
57 */
58struct bus_space obio_bs_tag = {
59	/* cookie */
60	(void *) 0,
61
62	/* mapping/unmapping */
63	obio_bs_map,
64	obio_bs_unmap,
65	obio_bs_subregion,
66
67	/* allocation/deallocation */
68	obio_bs_alloc,
69	obio_bs_free,
70
71	/* get kernel virtual address */
72	obio_bs_vaddr,
73
74	/* mmap */
75	bs_notimpl_bs_mmap,
76
77	/* barrier */
78	obio_bs_barrier,
79
80	/* read (single) */
81	generic_bs_r_1,
82	bs_notimpl_bs_r_2,
83	generic_bs_r_4,
84	bs_notimpl_bs_r_8,
85
86	/* read multiple */
87	generic_bs_rm_1,
88	bs_notimpl_bs_rm_2,
89	bs_notimpl_bs_rm_4,
90	bs_notimpl_bs_rm_8,
91
92	/* read region */
93	bs_notimpl_bs_rr_1,
94	bs_notimpl_bs_rr_2,
95	bs_notimpl_bs_rr_4,
96	bs_notimpl_bs_rr_8,
97
98	/* write (single) */
99	generic_bs_w_1,
100	bs_notimpl_bs_w_2,
101	generic_bs_w_4,
102	bs_notimpl_bs_w_8,
103
104	/* write multiple */
105	generic_bs_wm_1,
106	bs_notimpl_bs_wm_2,
107	bs_notimpl_bs_wm_4,
108	bs_notimpl_bs_wm_8,
109
110	/* write region */
111	bs_notimpl_bs_wr_1,
112	bs_notimpl_bs_wr_2,
113	bs_notimpl_bs_wr_4,
114	bs_notimpl_bs_wr_8,
115
116	/* set multiple */
117	bs_notimpl_bs_sm_1,
118	bs_notimpl_bs_sm_2,
119	bs_notimpl_bs_sm_4,
120	bs_notimpl_bs_sm_8,
121
122	/* set region */
123	bs_notimpl_bs_sr_1,
124	bs_notimpl_bs_sr_2,
125	bs_notimpl_bs_sr_4,
126	bs_notimpl_bs_sr_8,
127
128	/* copy */
129	bs_notimpl_bs_c_1,
130	bs_notimpl_bs_c_2,
131	bs_notimpl_bs_c_4,
132	bs_notimpl_bs_c_8,
133};
134
135int
136obio_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags,
137    bus_space_handle_t *bshp)
138{
139
140	/*
141	 * IQ80321 on-board devices are mapped VA==PA.  All addresses
142	 * we're provided, therefore, don't need any additional mapping.
143	 */
144	*bshp = bpa;
145
146	return 0;
147}
148
149int
150obio_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend, bus_size_t size,
151    bus_size_t alignment, bus_size_t boundary, int flags, bus_addr_t *bpap,
152    bus_space_handle_t *bshp)
153{
154
155	panic("obio_bs_alloc(): not implemented\n");
156}
157
158
159void
160obio_bs_unmap(void *t, bus_space_handle_t bsh, bus_size_t size)
161{
162
163	/* Nothing to do. */
164}
165
166void
167obio_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size)
168{
169
170	panic("obio_bs_free(): not implemented\n");
171}
172
173int
174obio_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset,
175    bus_size_t size, bus_space_handle_t *nbshp)
176{
177
178	*nbshp = bsh + offset;
179	return (0);
180}
181
182void *
183obio_bs_vaddr(void *t, bus_space_handle_t bsh)
184{
185
186	return ((void *)bsh);
187}
188
189void
190obio_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset,
191    bus_size_t len, int flags)
192{
193
194	/* Nothing to do. */
195}
196