footbridge_com_io.c revision 1.1 
1/*	$NetBSD: footbridge_com_io.c,v 1.1 2001/06/09 10:29:12 chris Exp $	*/
2
3/*
4 * Copyright (c) 1997 Mark Brinicombe.
5 * Copyright (c) 1997 Causality Limited.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 *    must display the following acknowledgement:
18 *	This product includes software developed by Mark Brinicombe
19 *	for the NetBSD Project.
20 * 4. The name of the company nor the name of the author may be used to
21 *    endorse or promote products derived from this software without specific
22 *    prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
25 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
26 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
27 * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
28 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
29 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
30 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 */
36
37/*
38 * This file provides the bus space tag for the footbridge serial console
39 */
40
41/*
42 * bus_space I/O functions for mainbus
43 */
44
45#include <sys/param.h>
46#include <sys/systm.h>
47#include <machine/bus.h>
48
49/* Proto types for all the bus_space structure functions */
50
51bs_protos(fcomcons);
52bs_protos(bs_notimpl);
53
54/* Declare the fcomcons bus space tag */
55
56struct bus_space fcomcons_bs_tag = {
57	/* cookie */
58	NULL,
59
60	/* mapping/unmapping */
61	fcomcons_bs_map,
62	fcomcons_bs_unmap,
63	fcomcons_bs_subregion,
64
65	/* allocation/deallocation */
66	fcomcons_bs_alloc,
67	fcomcons_bs_free,
68
69	/* get kernel virtual address */
70	0, /* never used */
71
72	/* barrier */
73	fcomcons_bs_barrier,
74
75	/* read (single) */
76	bs_notimpl_bs_r_1,
77	bs_notimpl_bs_r_2,
78	fcomcons_bs_r_4,
79	bs_notimpl_bs_r_8,
80
81	/* read multiple */
82	bs_notimpl_bs_rm_1,
83	bs_notimpl_bs_rm_2,
84	bs_notimpl_bs_rm_4,
85	bs_notimpl_bs_rm_8,
86
87	/* read region */
88	bs_notimpl_bs_rr_1,
89	bs_notimpl_bs_rr_2,
90	bs_notimpl_bs_rr_4,
91	bs_notimpl_bs_rr_8,
92
93	/* write (single) */
94	bs_notimpl_bs_w_1,
95	bs_notimpl_bs_w_2,
96	fcomcons_bs_w_4,
97	bs_notimpl_bs_w_8,
98
99	/* write multiple */
100	bs_notimpl_bs_wm_1,
101	bs_notimpl_bs_wm_2,
102	bs_notimpl_bs_wm_4,
103	bs_notimpl_bs_wm_8,
104
105	/* write region */
106	bs_notimpl_bs_wr_1,
107	bs_notimpl_bs_wr_2,
108	bs_notimpl_bs_wr_4,
109	bs_notimpl_bs_wr_8,
110
111	bs_notimpl_bs_sm_1,
112	bs_notimpl_bs_sm_2,
113	bs_notimpl_bs_sm_4,
114	bs_notimpl_bs_sm_8,
115
116	/* set region */
117	bs_notimpl_bs_sr_1,
118	bs_notimpl_bs_sr_2,
119	bs_notimpl_bs_sr_4,
120	bs_notimpl_bs_sr_8,
121
122	/* copy */
123	bs_notimpl_bs_c_1,
124	bs_notimpl_bs_c_2,
125	bs_notimpl_bs_c_4,
126	bs_notimpl_bs_c_8,
127};
128
129/* bus space functions */
130
131int
132fcomcons_bs_map(t, bpa, size, cacheable, bshp)
133	void *t;
134	bus_addr_t bpa;
135	bus_size_t size;
136	int cacheable;
137	bus_space_handle_t *bshp;
138{
139	/*
140	 * Temporary implementation as all I/O is already mapped etc.
141	 *
142	 * Eventually this function will do the mapping check for multiple maps
143	 */
144	*bshp = bpa;
145	return(0);
146	}
147
148int
149fcomcons_bs_alloc(t, rstart, rend, size, alignment, boundary, cacheable,
150    bpap, bshp)
151	void *t;
152	bus_addr_t rstart, rend;
153	bus_size_t size, alignment, boundary;
154	int cacheable;
155	bus_addr_t *bpap;
156	bus_space_handle_t *bshp;
157{
158	panic("fcomcons_alloc(): Help!\n");
159}
160
161
162void
163fcomcons_bs_unmap(t, bsh, size)
164	void *t;
165	bus_space_handle_t bsh;
166	bus_size_t size;
167{
168	/*
169	 * Temporary implementation
170	 */
171}
172
173void
174fcomcons_bs_free(t, bsh, size)
175	void *t;
176	bus_space_handle_t bsh;
177	bus_size_t size;
178{
179
180	panic("fcomcons_free(): Help!\n");
181	/* fcomcons_unmap() does all that we need to do. */
182/*	fcomcons_unmap(t, bsh, size);*/
183}
184
185int
186fcomcons_bs_subregion(t, bsh, offset, size, nbshp)
187	void *t;
188	bus_space_handle_t bsh;
189	bus_size_t offset, size;
190	bus_space_handle_t *nbshp;
191{
192
193	*nbshp = bsh + offset;
194	return (0);
195}
196
197void
198fcomcons_bs_barrier(t, bsh, offset, len, flags)
199	void *t;
200	bus_space_handle_t bsh;
201	bus_size_t offset, len;
202	int flags;
203{
204}
205
206/* End of footbridge_com_io.c */
207