footbridge_com_io.c revision 1.5 
1/*	$NetBSD: footbridge_com_io.c,v 1.5 2003/03/23 14:12:25 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/cdefs.h>
46__KERNEL_RCSID(0, "$NetBSD: footbridge_com_io.c,v 1.5 2003/03/23 14:12:25 chris Exp $");
47
48#include <sys/param.h>
49#include <sys/systm.h>
50#include <machine/bus.h>
51
52/* Proto types for all the bus_space structure functions */
53
54bs_protos(fcomcons);
55bs_protos(generic);
56bs_protos(bs_notimpl);
57
58/* Declare the fcomcons bus space tag */
59
60struct bus_space fcomcons_bs_tag = {
61	/* cookie */
62	NULL,
63
64	/* mapping/unmapping */
65	fcomcons_bs_map,
66	fcomcons_bs_unmap,
67	fcomcons_bs_subregion,
68
69	/* allocation/deallocation */
70	fcomcons_bs_alloc,
71	fcomcons_bs_free,
72
73	/* get kernel virtual address */
74	0, /* never used */
75
76	/* Mmap bus space for user */
77	bs_notimpl_bs_mmap,
78
79	/* barrier */
80	fcomcons_bs_barrier,
81
82	/* read (single) */
83	bs_notimpl_bs_r_1,
84	bs_notimpl_bs_r_2,
85	generic_bs_r_4,
86	bs_notimpl_bs_r_8,
87
88	/* read multiple */
89	bs_notimpl_bs_rm_1,
90	bs_notimpl_bs_rm_2,
91	bs_notimpl_bs_rm_4,
92	bs_notimpl_bs_rm_8,
93
94	/* read region */
95	bs_notimpl_bs_rr_1,
96	bs_notimpl_bs_rr_2,
97	bs_notimpl_bs_rr_4,
98	bs_notimpl_bs_rr_8,
99
100	/* write (single) */
101	bs_notimpl_bs_w_1,
102	bs_notimpl_bs_w_2,
103	generic_bs_w_4,
104	bs_notimpl_bs_w_8,
105
106	/* write multiple */
107	bs_notimpl_bs_wm_1,
108	bs_notimpl_bs_wm_2,
109	bs_notimpl_bs_wm_4,
110	bs_notimpl_bs_wm_8,
111
112	/* write region */
113	bs_notimpl_bs_wr_1,
114	bs_notimpl_bs_wr_2,
115	bs_notimpl_bs_wr_4,
116	bs_notimpl_bs_wr_8,
117
118	bs_notimpl_bs_sm_1,
119	bs_notimpl_bs_sm_2,
120	bs_notimpl_bs_sm_4,
121	bs_notimpl_bs_sm_8,
122
123	/* set region */
124	bs_notimpl_bs_sr_1,
125	bs_notimpl_bs_sr_2,
126	bs_notimpl_bs_sr_4,
127	bs_notimpl_bs_sr_8,
128
129	/* copy */
130	bs_notimpl_bs_c_1,
131	bs_notimpl_bs_c_2,
132	bs_notimpl_bs_c_4,
133	bs_notimpl_bs_c_8,
134};
135
136/* bus space functions */
137
138int
139fcomcons_bs_map(t, bpa, size, cacheable, bshp)
140	void *t;
141	bus_addr_t bpa;
142	bus_size_t size;
143	int cacheable;
144	bus_space_handle_t *bshp;
145{
146	/*
147	 * Temporary implementation as all I/O is already mapped etc.
148	 *
149	 * Eventually this function will do the mapping check for multiple maps
150	 */
151	*bshp = bpa;
152	return(0);
153	}
154
155int
156fcomcons_bs_alloc(t, rstart, rend, size, alignment, boundary, cacheable,
157    bpap, bshp)
158	void *t;
159	bus_addr_t rstart, rend;
160	bus_size_t size, alignment, boundary;
161	int cacheable;
162	bus_addr_t *bpap;
163	bus_space_handle_t *bshp;
164{
165	panic("fcomcons_alloc(): Help!");
166}
167
168
169void
170fcomcons_bs_unmap(t, bsh, size)
171	void *t;
172	bus_space_handle_t bsh;
173	bus_size_t size;
174{
175	/*
176	 * Temporary implementation
177	 */
178}
179
180void
181fcomcons_bs_free(t, bsh, size)
182	void *t;
183	bus_space_handle_t bsh;
184	bus_size_t size;
185{
186
187	panic("fcomcons_free(): Help!");
188	/* fcomcons_unmap() does all that we need to do. */
189/*	fcomcons_unmap(t, bsh, size);*/
190}
191
192int
193fcomcons_bs_subregion(t, bsh, offset, size, nbshp)
194	void *t;
195	bus_space_handle_t bsh;
196	bus_size_t offset, size;
197	bus_space_handle_t *nbshp;
198{
199
200	*nbshp = bsh + offset;
201	return (0);
202}
203
204void
205fcomcons_bs_barrier(t, bsh, offset, len, flags)
206	void *t;
207	bus_space_handle_t bsh;
208	bus_size_t offset, len;
209	int flags;
210{
211}
212
213/* End of footbridge_com_io.c */
214