footbridge_com_io.c revision 1.2 
1/*	$NetBSD: footbridge_com_io.c,v 1.2 2001/09/10 23:05:19 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	/* Mmap bus space for user */
73	bs_notimpl_bs_mmap,
74
75	/* barrier */
76	fcomcons_bs_barrier,
77
78	/* read (single) */
79	bs_notimpl_bs_r_1,
80	bs_notimpl_bs_r_2,
81	fcomcons_bs_r_4,
82	bs_notimpl_bs_r_8,
83
84	/* read multiple */
85	bs_notimpl_bs_rm_1,
86	bs_notimpl_bs_rm_2,
87	bs_notimpl_bs_rm_4,
88	bs_notimpl_bs_rm_8,
89
90	/* read region */
91	bs_notimpl_bs_rr_1,
92	bs_notimpl_bs_rr_2,
93	bs_notimpl_bs_rr_4,
94	bs_notimpl_bs_rr_8,
95
96	/* write (single) */
97	bs_notimpl_bs_w_1,
98	bs_notimpl_bs_w_2,
99	fcomcons_bs_w_4,
100	bs_notimpl_bs_w_8,
101
102	/* write multiple */
103	bs_notimpl_bs_wm_1,
104	bs_notimpl_bs_wm_2,
105	bs_notimpl_bs_wm_4,
106	bs_notimpl_bs_wm_8,
107
108	/* write region */
109	bs_notimpl_bs_wr_1,
110	bs_notimpl_bs_wr_2,
111	bs_notimpl_bs_wr_4,
112	bs_notimpl_bs_wr_8,
113
114	bs_notimpl_bs_sm_1,
115	bs_notimpl_bs_sm_2,
116	bs_notimpl_bs_sm_4,
117	bs_notimpl_bs_sm_8,
118
119	/* set region */
120	bs_notimpl_bs_sr_1,
121	bs_notimpl_bs_sr_2,
122	bs_notimpl_bs_sr_4,
123	bs_notimpl_bs_sr_8,
124
125	/* copy */
126	bs_notimpl_bs_c_1,
127	bs_notimpl_bs_c_2,
128	bs_notimpl_bs_c_4,
129	bs_notimpl_bs_c_8,
130};
131
132/* bus space functions */
133
134int
135fcomcons_bs_map(t, bpa, size, cacheable, bshp)
136	void *t;
137	bus_addr_t bpa;
138	bus_size_t size;
139	int cacheable;
140	bus_space_handle_t *bshp;
141{
142	/*
143	 * Temporary implementation as all I/O is already mapped etc.
144	 *
145	 * Eventually this function will do the mapping check for multiple maps
146	 */
147	*bshp = bpa;
148	return(0);
149	}
150
151int
152fcomcons_bs_alloc(t, rstart, rend, size, alignment, boundary, cacheable,
153    bpap, bshp)
154	void *t;
155	bus_addr_t rstart, rend;
156	bus_size_t size, alignment, boundary;
157	int cacheable;
158	bus_addr_t *bpap;
159	bus_space_handle_t *bshp;
160{
161	panic("fcomcons_alloc(): Help!\n");
162}
163
164
165void
166fcomcons_bs_unmap(t, bsh, size)
167	void *t;
168	bus_space_handle_t bsh;
169	bus_size_t size;
170{
171	/*
172	 * Temporary implementation
173	 */
174}
175
176void
177fcomcons_bs_free(t, bsh, size)
178	void *t;
179	bus_space_handle_t bsh;
180	bus_size_t size;
181{
182
183	panic("fcomcons_free(): Help!\n");
184	/* fcomcons_unmap() does all that we need to do. */
185/*	fcomcons_unmap(t, bsh, size);*/
186}
187
188int
189fcomcons_bs_subregion(t, bsh, offset, size, nbshp)
190	void *t;
191	bus_space_handle_t bsh;
192	bus_size_t offset, size;
193	bus_space_handle_t *nbshp;
194{
195
196	*nbshp = bsh + offset;
197	return (0);
198}
199
200void
201fcomcons_bs_barrier(t, bsh, offset, len, flags)
202	void *t;
203	bus_space_handle_t bsh;
204	bus_size_t offset, len;
205	int flags;
206{
207}
208
209/* End of footbridge_com_io.c */
210