1 /* $NetBSD: iomd_io.c,v 1.7 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 * 4. The name of the company nor the name of the author may be used to
20 * endorse or promote products derived from this software without specific
21 * prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
24 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
25 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
26 * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
27 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
28 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
29 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
36 /*
37 * bus_space I/O functions for iomd
38 */
39
40 #include <sys/cdefs.h>
41 __KERNEL_RCSID(0, "$NetBSD: iomd_io.c,v 1.7 2018/03/16 17:56:31 ryo Exp $");
42
43 #include <sys/param.h>
44 #include <sys/systm.h>
45 #include <sys/bus.h>
46
47 /* Proto types for all the bus_space structure functions */
48
49 bs_protos(iomd);
50 bs_protos(bs_notimpl);
51
52 /* Declare the iomd bus space tag */
53
54 struct bus_space iomd_bs_tag = {
55 /* cookie */
56 .bs_cookie = NULL,
57
58 /* mapping/unmapping */
59 .bs_map = iomd_bs_map,
60 .bs_unmap = iomd_bs_unmap,
61 .bs_subregion = iomd_bs_subregion,
62
63 /* allocation/deallocation */
64 .bs_alloc = iomd_bs_alloc,
65 .bs_free = iomd_bs_free,
66
67 /* get kernel virtual address */
68 .bs_vaddr = 0, /* there is no linear mapping */
69
70 /* mmap bus space for userland */
71 .bs_mmap = bs_notimpl_bs_mmap, /* XXX correct? XXX */
72
73 /* barrier */
74 .bs_barrier = iomd_bs_barrier,
75
76 /* read (single) */
77 .bs_r_1 = iomd_bs_r_1,
78 .bs_r_2 = iomd_bs_r_2,
79 .bs_r_4 = iomd_bs_r_4,
80 .bs_r_8 = bs_notimpl_bs_r_8,
81
82 /* read multiple */
83 .bs_rm_1 = bs_notimpl_bs_rm_1,
84 .bs_rm_2 = iomd_bs_rm_2,
85 .bs_rm_4 = bs_notimpl_bs_rm_4,
86 .bs_rm_8 = bs_notimpl_bs_rm_8,
87
88 /* read region */
89 .bs_rr_1 = bs_notimpl_bs_rr_1,
90 .bs_rr_2 = bs_notimpl_bs_rr_2,
91 .bs_rr_4 = bs_notimpl_bs_rr_4,
92 .bs_rr_8 = bs_notimpl_bs_rr_8,
93
94 /* write (single) */
95 .bs_w_1 = iomd_bs_w_1,
96 .bs_w_2 = iomd_bs_w_2,
97 .bs_w_4 = iomd_bs_w_4,
98 .bs_w_8 = bs_notimpl_bs_w_8,
99
100 /* write multiple */
101 .bs_wm_1 = bs_notimpl_bs_wm_1,
102 .bs_wm_2 = iomd_bs_wm_2,
103 .bs_wm_4 = bs_notimpl_bs_wm_4,
104 .bs_wm_8 = bs_notimpl_bs_wm_8,
105
106 /* write region */
107 .bs_wr_1 = bs_notimpl_bs_wr_1,
108 .bs_wr_2 = bs_notimpl_bs_wr_2,
109 .bs_wr_4 = bs_notimpl_bs_wr_4,
110 .bs_wr_8 = bs_notimpl_bs_wr_8,
111
112 /* set multiple */
113 .bs_sm_1 = bs_notimpl_bs_sm_1,
114 .bs_sm_2 = bs_notimpl_bs_sm_2,
115 .bs_sm_4 = bs_notimpl_bs_sm_4,
116 .bs_sm_8 = bs_notimpl_bs_sm_8,
117
118 /* set region */
119 .bs_sr_1 = bs_notimpl_bs_sr_1,
120 .bs_sr_2 = bs_notimpl_bs_sr_2,
121 .bs_sr_4 = bs_notimpl_bs_sr_4,
122 .bs_sr_8 = bs_notimpl_bs_sr_8,
123
124 /* copy */
125 .bs_c_1 = bs_notimpl_bs_c_1,
126 .bs_c_2 = bs_notimpl_bs_c_2,
127 .bs_c_4 = bs_notimpl_bs_c_4,
128 .bs_c_8 = bs_notimpl_bs_c_8,
129 };
130
131 /* bus space functions */
132
133 int
iomd_bs_map(void * t,bus_addr_t bpa,bus_size_t size,int cacheable,bus_space_handle_t * bshp)134 iomd_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int cacheable,
135 bus_space_handle_t *bshp)
136 {
137
138 /*
139 * Temporary implementation as all I/O is already mapped etc.
140 *
141 * Eventually this function will do the mapping check for multiple maps
142 */
143 *bshp = bpa;
144 return 0;
145 }
146
147 int
iomd_bs_alloc(void * t,bus_addr_t rstart,bus_addr_t rend,bus_size_t size,bus_size_t alignment,bus_size_t boundary,int cacheable,bus_addr_t * bpap,bus_space_handle_t * bshp)148 iomd_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend, bus_size_t size,
149 bus_size_t alignment, bus_size_t boundary, int cacheable, bus_addr_t *bpap,
150 bus_space_handle_t *bshp)
151 {
152
153 panic("iomd_alloc(): Help!");
154 }
155
156
157 void
iomd_bs_unmap(void * t,bus_space_handle_t bsh,bus_size_t size)158 iomd_bs_unmap(void *t, bus_space_handle_t bsh, bus_size_t size)
159 {
160
161 /*
162 * Temporary implementation
163 */
164 }
165
166 void
iomd_bs_free(void * t,bus_space_handle_t bsh,bus_size_t size)167 iomd_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size)
168 {
169
170 panic("iomd_free(): Help!");
171 /* iomd_unmap() does all that we need to do. */
172 /* iomd_unmap(t, bsh, size);*/
173 }
174
175 int
iomd_bs_subregion(void * t,bus_space_handle_t bsh,bus_size_t offset,bus_size_t size,bus_space_handle_t * nbshp)176 iomd_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset,
177 bus_size_t size, bus_space_handle_t *nbshp)
178 {
179
180 *nbshp = bsh + (offset << 2);
181 return 0;
182 }
183
184 void
iomd_bs_barrier(void * t,bus_space_handle_t bsh,bus_size_t offset,bus_size_t len,int flags)185 iomd_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset,
186 bus_size_t len, int flags)
187 {
188
189 }
190
191 /* End of iomd_io.c */
192