footbridge_com_io.c revision 1.9 
1/*	$NetBSD: footbridge_com_io.c,v 1.9 2018/03/16 17:56:31 ryo 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 1.9 2018/03/16 17:56:31 ryo Exp $");
47
48#include <sys/param.h>
49#include <sys/systm.h>
50#include <sys/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	.bs_cookie = NULL,
63
64	/* mapping/unmapping */
65	.bs_map = fcomcons_bs_map,
66	.bs_unmap = fcomcons_bs_unmap,
67	.bs_subregion = fcomcons_bs_subregion,
68
69	/* allocation/deallocation */
70	.bs_alloc = fcomcons_bs_alloc,
71	.bs_free = fcomcons_bs_free,
72
73	/* get kernel virtual address */
74	.bs_vaddr = 0, /* never used */
75
76	/* Mmap bus space for user */
77	.bs_mmap = bs_notimpl_bs_mmap,
78
79	/* barrier */
80	.bs_barrier = fcomcons_bs_barrier,
81
82	/* read (single) */
83	.bs_r_1 = bs_notimpl_bs_r_1,
84	.bs_r_2 = bs_notimpl_bs_r_2,
85	.bs_r_4 = generic_bs_r_4,
86	.bs_r_8 = bs_notimpl_bs_r_8,
87
88	/* read multiple */
89	.bs_rm_1 = bs_notimpl_bs_rm_1,
90	.bs_rm_2 = bs_notimpl_bs_rm_2,
91	.bs_rm_4 = bs_notimpl_bs_rm_4,
92	.bs_rm_8 = bs_notimpl_bs_rm_8,
93
94	/* read region */
95	.bs_rr_1 = bs_notimpl_bs_rr_1,
96	.bs_rr_2 = bs_notimpl_bs_rr_2,
97	.bs_rr_4 = bs_notimpl_bs_rr_4,
98	.bs_rr_8 = bs_notimpl_bs_rr_8,
99
100	/* write (single) */
101	.bs_w_1 = bs_notimpl_bs_w_1,
102	.bs_w_2 = bs_notimpl_bs_w_2,
103	.bs_w_4 = generic_bs_w_4,
104	.bs_w_8 = bs_notimpl_bs_w_8,
105
106	/* write multiple */
107	.bs_wm_1 = bs_notimpl_bs_wm_1,
108	.bs_wm_2 = bs_notimpl_bs_wm_2,
109	.bs_wm_4 = bs_notimpl_bs_wm_4,
110	.bs_wm_8 = bs_notimpl_bs_wm_8,
111
112	/* write region */
113	.bs_wr_1 = bs_notimpl_bs_wr_1,
114	.bs_wr_2 = bs_notimpl_bs_wr_2,
115	.bs_wr_4 = bs_notimpl_bs_wr_4,
116	.bs_wr_8 = bs_notimpl_bs_wr_8,
117
118	.bs_sm_1 = bs_notimpl_bs_sm_1,
119	.bs_sm_2 = bs_notimpl_bs_sm_2,
120	.bs_sm_4 = bs_notimpl_bs_sm_4,
121	.bs_sm_8 = bs_notimpl_bs_sm_8,
122
123	/* set region */
124	.bs_sr_1 = bs_notimpl_bs_sr_1,
125	.bs_sr_2 = bs_notimpl_bs_sr_2,
126	.bs_sr_4 = bs_notimpl_bs_sr_4,
127	.bs_sr_8 = bs_notimpl_bs_sr_8,
128
129	/* copy */
130	.bs_c_1 = bs_notimpl_bs_c_1,
131	.bs_c_2 = bs_notimpl_bs_c_2,
132	.bs_c_4 = bs_notimpl_bs_c_4,
133	.bs_c_8 = bs_notimpl_bs_c_8,
134};
135
136/* bus space functions */
137
138int
139fcomcons_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int cacheable, bus_space_handle_t *bshp)
140{
141	/*
142	 * Temporary implementation as all I/O is already mapped etc.
143	 *
144	 * Eventually this function will do the mapping check for multiple maps
145	 */
146	*bshp = bpa;
147	return(0);
148	}
149
150int
151fcomcons_bs_alloc(
152	void *t,
153	bus_addr_t rstart,
154	bus_addr_t rend,
155	bus_size_t size,
156	bus_size_t alignment,
157	bus_size_t boundary,
158	int cacheable,
159	bus_addr_t *bpap,
160	bus_space_handle_t *bshp)
161{
162	panic("fcomcons_alloc(): Help!");
163}
164
165
166void
167fcomcons_bs_unmap(void *t, bus_space_handle_t bsh, bus_size_t size)
168{
169	/*
170	 * Temporary implementation
171	 */
172}
173
174void
175fcomcons_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size)
176{
177
178	panic("fcomcons_free(): Help!");
179	/* fcomcons_unmap() does all that we need to do. */
180/*	fcomcons_unmap(t, bsh, size);*/
181}
182
183int
184fcomcons_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset, bus_size_t size, bus_space_handle_t *nbshp)
185{
186
187	*nbshp = bsh + offset;
188	return (0);
189}
190
191void
192fcomcons_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset, bus_size_t len, int flags)
193{
194}
195
196/* End of footbridge_com_io.c */
197