1 /*-
2 * Copyright (c) 2014 Andrew Turner
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 */
27
28 #define KCSAN_RUNTIME
29
30 #include "opt_platform.h"
31
32 #include <sys/param.h>
33 __FBSDID("$FreeBSD$");
34
35 #include <vm/vm.h>
36 #include <vm/pmap.h>
37
38 #include <machine/bus.h>
39
40 uint8_t generic_bs_r_1(void *, bus_space_handle_t, bus_size_t);
41 uint16_t generic_bs_r_2(void *, bus_space_handle_t, bus_size_t);
42 uint32_t generic_bs_r_4(void *, bus_space_handle_t, bus_size_t);
43 uint64_t generic_bs_r_8(void *, bus_space_handle_t, bus_size_t);
44
45 void generic_bs_rm_1(void *, bus_space_handle_t, bus_size_t, uint8_t *,
46 bus_size_t);
47 void generic_bs_rm_2(void *, bus_space_handle_t, bus_size_t, uint16_t *,
48 bus_size_t);
49 void generic_bs_rm_4(void *, bus_space_handle_t, bus_size_t, uint32_t *,
50 bus_size_t);
51 void generic_bs_rm_8(void *, bus_space_handle_t, bus_size_t, uint64_t *,
52 bus_size_t);
53
54 void generic_bs_rr_1(void *, bus_space_handle_t, bus_size_t, uint8_t *,
55 bus_size_t);
56 void generic_bs_rr_2(void *, bus_space_handle_t, bus_size_t, uint16_t *,
57 bus_size_t);
58 void generic_bs_rr_4(void *, bus_space_handle_t, bus_size_t, uint32_t *,
59 bus_size_t);
60 void generic_bs_rr_8(void *, bus_space_handle_t, bus_size_t, uint64_t *,
61 bus_size_t);
62
63 void generic_bs_w_1(void *, bus_space_handle_t, bus_size_t, uint8_t);
64 void generic_bs_w_2(void *, bus_space_handle_t, bus_size_t, uint16_t);
65 void generic_bs_w_4(void *, bus_space_handle_t, bus_size_t, uint32_t);
66 void generic_bs_w_8(void *, bus_space_handle_t, bus_size_t, uint64_t);
67
68 void generic_bs_wm_1(void *, bus_space_handle_t, bus_size_t, const uint8_t *,
69 bus_size_t);
70 void generic_bs_wm_2(void *, bus_space_handle_t, bus_size_t, const uint16_t *,
71 bus_size_t);
72 void generic_bs_wm_4(void *, bus_space_handle_t, bus_size_t, const uint32_t *,
73 bus_size_t);
74 void generic_bs_wm_8(void *, bus_space_handle_t, bus_size_t, const uint64_t *,
75 bus_size_t);
76
77 void generic_bs_wr_1(void *, bus_space_handle_t, bus_size_t, const uint8_t *,
78 bus_size_t);
79 void generic_bs_wr_2(void *, bus_space_handle_t, bus_size_t, const uint16_t *,
80 bus_size_t);
81 void generic_bs_wr_4(void *, bus_space_handle_t, bus_size_t, const uint32_t *,
82 bus_size_t);
83 void generic_bs_wr_8(void *, bus_space_handle_t, bus_size_t, const uint64_t *,
84 bus_size_t);
85
86 int generic_bs_peek_1(void *, bus_space_handle_t, bus_size_t , uint8_t *);
87 int generic_bs_peek_2(void *, bus_space_handle_t, bus_size_t , uint16_t *);
88 int generic_bs_peek_4(void *, bus_space_handle_t, bus_size_t , uint32_t *);
89 int generic_bs_peek_8(void *, bus_space_handle_t, bus_size_t , uint64_t *);
90
91 int generic_bs_poke_1(void *, bus_space_handle_t, bus_size_t, uint8_t);
92 int generic_bs_poke_2(void *, bus_space_handle_t, bus_size_t, uint16_t);
93 int generic_bs_poke_4(void *, bus_space_handle_t, bus_size_t, uint32_t);
94 int generic_bs_poke_8(void *, bus_space_handle_t, bus_size_t, uint64_t);
95
96 static int
generic_bs_map(void * t,bus_addr_t bpa,bus_size_t size,int flags,bus_space_handle_t * bshp)97 generic_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags,
98 bus_space_handle_t *bshp)
99 {
100 void *va;
101
102 va = pmap_mapdev(bpa, size);
103 if (va == NULL)
104 return (ENOMEM);
105 *bshp = (bus_space_handle_t)va;
106 return (0);
107 }
108
109 static void
generic_bs_unmap(void * t,bus_space_handle_t bsh,bus_size_t size)110 generic_bs_unmap(void *t, bus_space_handle_t bsh, bus_size_t size)
111 {
112
113 pmap_unmapdev(bsh, size);
114 }
115
116 static void
generic_bs_barrier(void * t,bus_space_handle_t bsh,bus_size_t offset,bus_size_t size,int flags)117 generic_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset,
118 bus_size_t size, int flags)
119 {
120 }
121
122 static int
generic_bs_subregion(void * t,bus_space_handle_t bsh,bus_size_t offset,bus_size_t size,bus_space_handle_t * nbshp)123 generic_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset,
124 bus_size_t size, bus_space_handle_t *nbshp)
125 {
126
127 *nbshp = bsh + offset;
128 return (0);
129 }
130
131 /*
132 * Write `count' 1, 2, 4, or 8 byte value `val' to bus space described
133 * by tag/handle starting at `offset'.
134 */
135 static void
generic_bs_sr_1(void * t,bus_space_handle_t bsh,bus_size_t offset,uint8_t value,size_t count)136 generic_bs_sr_1(void *t, bus_space_handle_t bsh,
137 bus_size_t offset, uint8_t value, size_t count)
138 {
139
140 for (; count != 0; count--, offset++)
141 generic_bs_w_1(t, bsh, offset, value);
142 }
143
144 static void
generic_bs_sr_2(void * t,bus_space_handle_t bsh,bus_size_t offset,uint16_t value,size_t count)145 generic_bs_sr_2(void *t, bus_space_handle_t bsh,
146 bus_size_t offset, uint16_t value, size_t count)
147 {
148
149 for (; count != 0; count--, offset += 2)
150 generic_bs_w_2(t, bsh, offset, value);
151 }
152
153 static void
generic_bs_sr_4(void * t,bus_space_handle_t bsh,bus_size_t offset,uint32_t value,size_t count)154 generic_bs_sr_4(void *t, bus_space_handle_t bsh,
155 bus_size_t offset, uint32_t value, size_t count)
156 {
157
158 for (; count != 0; count--, offset += 4)
159 generic_bs_w_4(t, bsh, offset, value);
160 }
161
162 static void
generic_bs_sr_8(void * t,bus_space_handle_t bsh,bus_size_t offset,uint64_t value,size_t count)163 generic_bs_sr_8(void *t, bus_space_handle_t bsh, bus_size_t offset,
164 uint64_t value, size_t count)
165 {
166
167 for (; count != 0; count--, offset += 8)
168 generic_bs_w_8(t, bsh, offset, value);
169 }
170
171 struct bus_space memmap_bus = {
172 /* cookie */
173 .bs_cookie = NULL,
174
175 /* mapping/unmapping */
176 .bs_map = generic_bs_map,
177 .bs_unmap = generic_bs_unmap,
178 .bs_subregion = generic_bs_subregion,
179
180 /* allocation/deallocation */
181 .bs_alloc = NULL,
182 .bs_free = NULL,
183
184 /* barrier */
185 .bs_barrier = generic_bs_barrier,
186
187 /* read single */
188 .bs_r_1 = generic_bs_r_1,
189 .bs_r_2 = generic_bs_r_2,
190 .bs_r_4 = generic_bs_r_4,
191 .bs_r_8 = generic_bs_r_8,
192
193 /* read multiple */
194 .bs_rm_1 = generic_bs_rm_1,
195 .bs_rm_2 = generic_bs_rm_2,
196 .bs_rm_4 = generic_bs_rm_4,
197 .bs_rm_8 = generic_bs_rm_8,
198
199 /* read region */
200 .bs_rr_1 = generic_bs_rr_1,
201 .bs_rr_2 = generic_bs_rr_2,
202 .bs_rr_4 = generic_bs_rr_4,
203 .bs_rr_8 = generic_bs_rr_8,
204
205 /* write single */
206 .bs_w_1 = generic_bs_w_1,
207 .bs_w_2 = generic_bs_w_2,
208 .bs_w_4 = generic_bs_w_4,
209 .bs_w_8 = generic_bs_w_8,
210
211 /* write multiple */
212 .bs_wm_1 = generic_bs_wm_1,
213 .bs_wm_2 = generic_bs_wm_2,
214 .bs_wm_4 = generic_bs_wm_4,
215 .bs_wm_8 = generic_bs_wm_8,
216
217 /* write region */
218 .bs_wr_1 = generic_bs_wr_1,
219 .bs_wr_2 = generic_bs_wr_2,
220 .bs_wr_4 = generic_bs_wr_4,
221 .bs_wr_8 = generic_bs_wr_8,
222
223 /* set multiple */
224 .bs_sm_1 = NULL,
225 .bs_sm_2 = NULL,
226 .bs_sm_4 = NULL,
227 .bs_sm_8 = NULL,
228
229 /* set region */
230 .bs_sr_1 = generic_bs_sr_1,
231 .bs_sr_2 = generic_bs_sr_2,
232 .bs_sr_4 = generic_bs_sr_4,
233 .bs_sr_8 = generic_bs_sr_8,
234
235 /* copy */
236 .bs_c_1 = NULL,
237 .bs_c_2 = NULL,
238 .bs_c_4 = NULL,
239 .bs_c_8 = NULL,
240
241 /* read single stream */
242 .bs_r_1_s = NULL,
243 .bs_r_2_s = NULL,
244 .bs_r_4_s = NULL,
245 .bs_r_8_s = NULL,
246
247 /* read multiple stream */
248 .bs_rm_1_s = generic_bs_rm_1,
249 .bs_rm_2_s = generic_bs_rm_2,
250 .bs_rm_4_s = generic_bs_rm_4,
251 .bs_rm_8_s = generic_bs_rm_8,
252
253 /* read region stream */
254 .bs_rr_1_s = NULL,
255 .bs_rr_2_s = NULL,
256 .bs_rr_4_s = NULL,
257 .bs_rr_8_s = NULL,
258
259 /* write single stream */
260 .bs_w_1_s = NULL,
261 .bs_w_2_s = NULL,
262 .bs_w_4_s = NULL,
263 .bs_w_8_s = NULL,
264
265 /* write multiple stream */
266 .bs_wm_1_s = generic_bs_wm_1,
267 .bs_wm_2_s = generic_bs_wm_2,
268 .bs_wm_4_s = generic_bs_wm_4,
269 .bs_wm_8_s = generic_bs_wm_8,
270
271 /* write region stream */
272 .bs_wr_1_s = NULL,
273 .bs_wr_2_s = NULL,
274 .bs_wr_4_s = NULL,
275 .bs_wr_8_s = NULL,
276
277 /* peek */
278 .bs_peek_1 = generic_bs_peek_1,
279 .bs_peek_2 = generic_bs_peek_2,
280 .bs_peek_4 = generic_bs_peek_4,
281 .bs_peek_8 = generic_bs_peek_8,
282
283 /* poke */
284 .bs_poke_1 = generic_bs_poke_1,
285 .bs_poke_2 = generic_bs_poke_2,
286 .bs_poke_4 = generic_bs_poke_4,
287 .bs_poke_8 = generic_bs_poke_8,
288 };
289
290 #ifdef FDT
291 bus_space_tag_t fdtbus_bs_tag = &memmap_bus;
292 #endif
293