| @@ -1,413 +1,413 @@ | | | @@ -1,413 +1,413 @@ |
1 | /* $NetBSD: bcm2835_space.c,v 1.11 2017/11/09 21:37:52 skrll Exp $ */ | | 1 | /* $NetBSD: bcm2835_space.c,v 1.12 2017/11/27 17:27:37 skrll Exp $ */ |
2 | | | 2 | |
3 | /*- | | 3 | /*- |
4 | * Copyright (c) 2012 The NetBSD Foundation, Inc. | | 4 | * Copyright (c) 2012 The NetBSD Foundation, Inc. |
5 | * All rights reserved. | | 5 | * All rights reserved. |
6 | * | | 6 | * |
7 | * This code is derived from software contributed to The NetBSD Foundation | | 7 | * This code is derived from software contributed to The NetBSD Foundation |
8 | * by Nick Hudson | | 8 | * by Nick Hudson |
9 | * | | 9 | * |
10 | * Redistribution and use in source and binary forms, with or without | | 10 | * Redistribution and use in source and binary forms, with or without |
11 | * modification, are permitted provided that the following conditions | | 11 | * modification, are permitted provided that the following conditions |
12 | * are met: | | 12 | * are met: |
13 | * 1. Redistributions of source code must retain the above copyright | | 13 | * 1. Redistributions of source code must retain the above copyright |
14 | * notice, this list of conditions and the following disclaimer. | | 14 | * notice, this list of conditions and the following disclaimer. |
15 | * 2. Redistributions in binary form must reproduce the above copyright | | 15 | * 2. Redistributions in binary form must reproduce the above copyright |
16 | * notice, this list of conditions and the following disclaimer in the | | 16 | * notice, this list of conditions and the following disclaimer in the |
17 | * documentation and/or other materials provided with the distribution. | | 17 | * documentation and/or other materials provided with the distribution. |
18 | * | | 18 | * |
19 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS | | 19 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
20 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED | | 20 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
21 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | | 21 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
22 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS | | 22 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
23 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | | 23 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
24 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | | 24 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
25 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | | 25 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
26 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | | 26 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
27 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | | 27 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | | 28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
29 | * POSSIBILITY OF SUCH DAMAGE. | | 29 | * POSSIBILITY OF SUCH DAMAGE. |
30 | */ | | 30 | */ |
31 | | | 31 | |
32 | | | 32 | |
33 | #include <sys/cdefs.h> | | 33 | #include <sys/cdefs.h> |
34 | __KERNEL_RCSID(0, "$NetBSD: bcm2835_space.c,v 1.11 2017/11/09 21:37:52 skrll Exp $"); | | 34 | __KERNEL_RCSID(0, "$NetBSD: bcm2835_space.c,v 1.12 2017/11/27 17:27:37 skrll Exp $"); |
35 | | | 35 | |
36 | #include <sys/param.h> | | 36 | #include <sys/param.h> |
37 | #include <sys/systm.h> | | 37 | #include <sys/systm.h> |
38 | | | 38 | |
39 | #include <uvm/uvm_extern.h> | | 39 | #include <uvm/uvm_extern.h> |
40 | | | 40 | |
41 | #include <sys/bus.h> | | 41 | #include <sys/bus.h> |
42 | | | 42 | |
43 | #include <arm/locore.h> | | 43 | #include <arm/locore.h> |
44 | #include <arm/broadcom/bcm2835reg.h> | | 44 | #include <arm/broadcom/bcm2835reg.h> |
45 | | | 45 | |
46 | /* Prototypes for all the bus_space structure functions */ | | 46 | /* Prototypes for all the bus_space structure functions */ |
47 | bs_protos(bcm2835); | | 47 | bs_protos(bcm2835); |
48 | bs_protos(bcm2835_a4x); | | 48 | bs_protos(bcm2835_a4x); |
49 | bs_protos(generic); | | 49 | bs_protos(generic); |
50 | bs_protos(generic_armv4); | | 50 | bs_protos(generic_armv4); |
51 | bs_protos(a4x); | | 51 | bs_protos(a4x); |
52 | bs_protos(bs_notimpl); | | 52 | bs_protos(bs_notimpl); |
53 | | | 53 | |
54 | struct bus_space bcm2835_bs_tag = { | | 54 | struct bus_space bcm2835_bs_tag = { |
55 | /* cookie */ | | 55 | /* cookie */ |
56 | (void *) 0, | | 56 | (void *) 0, |
57 | | | 57 | |
58 | /* mapping/unmapping */ | | 58 | /* mapping/unmapping */ |
59 | bcm2835_bs_map, | | 59 | bcm2835_bs_map, |
60 | bcm2835_bs_unmap, | | 60 | bcm2835_bs_unmap, |
61 | bcm2835_bs_subregion, | | 61 | bcm2835_bs_subregion, |
62 | | | 62 | |
63 | /* allocation/deallocation */ | | 63 | /* allocation/deallocation */ |
64 | bcm2835_bs_alloc, /* not implemented */ | | 64 | bcm2835_bs_alloc, /* not implemented */ |
65 | bcm2835_bs_free, /* not implemented */ | | 65 | bcm2835_bs_free, /* not implemented */ |
66 | | | 66 | |
67 | /* get kernel virtual address */ | | 67 | /* get kernel virtual address */ |
68 | bcm2835_bs_vaddr, | | 68 | bcm2835_bs_vaddr, |
69 | | | 69 | |
70 | /* mmap */ | | 70 | /* mmap */ |
71 | bcm2835_bs_mmap, | | 71 | bcm2835_bs_mmap, |
72 | | | 72 | |
73 | /* barrier */ | | 73 | /* barrier */ |
74 | bcm2835_bs_barrier, | | 74 | bcm2835_bs_barrier, |
75 | | | 75 | |
76 | /* read (single) */ | | 76 | /* read (single) */ |
77 | generic_bs_r_1, | | 77 | generic_bs_r_1, |
78 | generic_armv4_bs_r_2, | | 78 | generic_armv4_bs_r_2, |
79 | generic_bs_r_4, | | 79 | generic_bs_r_4, |
80 | bs_notimpl_bs_r_8, | | 80 | bs_notimpl_bs_r_8, |
81 | | | 81 | |
82 | /* read multiple */ | | 82 | /* read multiple */ |
83 | generic_bs_rm_1, | | 83 | generic_bs_rm_1, |
84 | generic_armv4_bs_rm_2, | | 84 | generic_armv4_bs_rm_2, |
85 | generic_bs_rm_4, | | 85 | generic_bs_rm_4, |
86 | bs_notimpl_bs_rm_8, | | 86 | bs_notimpl_bs_rm_8, |
87 | | | 87 | |
88 | /* read region */ | | 88 | /* read region */ |
89 | generic_bs_rr_1, | | 89 | generic_bs_rr_1, |
90 | generic_armv4_bs_rr_2, | | 90 | generic_armv4_bs_rr_2, |
91 | generic_bs_rr_4, | | 91 | generic_bs_rr_4, |
92 | bs_notimpl_bs_rr_8, | | 92 | bs_notimpl_bs_rr_8, |
93 | | | 93 | |
94 | /* write (single) */ | | 94 | /* write (single) */ |
95 | generic_bs_w_1, | | 95 | generic_bs_w_1, |
96 | generic_armv4_bs_w_2, | | 96 | generic_armv4_bs_w_2, |
97 | generic_bs_w_4, | | 97 | generic_bs_w_4, |
98 | bs_notimpl_bs_w_8, | | 98 | bs_notimpl_bs_w_8, |
99 | | | 99 | |
100 | /* write multiple */ | | 100 | /* write multiple */ |
101 | generic_bs_wm_1, | | 101 | generic_bs_wm_1, |
102 | generic_armv4_bs_wm_2, | | 102 | generic_armv4_bs_wm_2, |
103 | generic_bs_wm_4, | | 103 | generic_bs_wm_4, |
104 | bs_notimpl_bs_wm_8, | | 104 | bs_notimpl_bs_wm_8, |
105 | | | 105 | |
106 | /* write region */ | | 106 | /* write region */ |
107 | generic_bs_wr_1, | | 107 | generic_bs_wr_1, |
108 | generic_armv4_bs_wr_2, | | 108 | generic_armv4_bs_wr_2, |
109 | generic_bs_wr_4, | | 109 | generic_bs_wr_4, |
110 | bs_notimpl_bs_wr_8, | | 110 | bs_notimpl_bs_wr_8, |
111 | | | 111 | |
112 | /* set multiple */ | | 112 | /* set multiple */ |
113 | bs_notimpl_bs_sm_1, | | 113 | bs_notimpl_bs_sm_1, |
114 | bs_notimpl_bs_sm_2, | | 114 | bs_notimpl_bs_sm_2, |
115 | bs_notimpl_bs_sm_4, | | 115 | bs_notimpl_bs_sm_4, |
116 | bs_notimpl_bs_sm_8, | | 116 | bs_notimpl_bs_sm_8, |
117 | | | 117 | |
118 | /* set region */ | | 118 | /* set region */ |
119 | generic_bs_sr_1, | | 119 | generic_bs_sr_1, |
120 | generic_armv4_bs_sr_2, | | 120 | generic_armv4_bs_sr_2, |
121 | bs_notimpl_bs_sr_4, | | 121 | bs_notimpl_bs_sr_4, |
122 | bs_notimpl_bs_sr_8, | | 122 | bs_notimpl_bs_sr_8, |
123 | | | 123 | |
124 | /* copy */ | | 124 | /* copy */ |
125 | bs_notimpl_bs_c_1, | | 125 | bs_notimpl_bs_c_1, |
126 | generic_armv4_bs_c_2, | | 126 | generic_armv4_bs_c_2, |
127 | bs_notimpl_bs_c_4, | | 127 | bs_notimpl_bs_c_4, |
128 | bs_notimpl_bs_c_8, | | 128 | bs_notimpl_bs_c_8, |
129 | | | 129 | |
130 | #ifdef __BUS_SPACE_HAS_STREAM_METHODS | | 130 | #ifdef __BUS_SPACE_HAS_STREAM_METHODS |
131 | /* read (single) */ | | 131 | /* read (single) */ |
132 | generic_bs_r_1, | | 132 | generic_bs_r_1, |
133 | generic_armv4_bs_r_2, | | 133 | generic_armv4_bs_r_2, |
134 | generic_bs_r_4, | | 134 | generic_bs_r_4, |
135 | bs_notimpl_bs_r_8, | | 135 | bs_notimpl_bs_r_8, |
136 | | | 136 | |
137 | /* read multiple */ | | 137 | /* read multiple */ |
138 | generic_bs_rm_1, | | 138 | generic_bs_rm_1, |
139 | generic_armv4_bs_rm_2, | | 139 | generic_armv4_bs_rm_2, |
140 | generic_bs_rm_4, | | 140 | generic_bs_rm_4, |
141 | bs_notimpl_bs_rm_8, | | 141 | bs_notimpl_bs_rm_8, |
142 | | | 142 | |
143 | /* read region */ | | 143 | /* read region */ |
144 | generic_bs_rr_1, | | 144 | generic_bs_rr_1, |
145 | generic_armv4_bs_rr_2, | | 145 | generic_armv4_bs_rr_2, |
146 | generic_bs_rr_4, | | 146 | generic_bs_rr_4, |
147 | bs_notimpl_bs_rr_8, | | 147 | bs_notimpl_bs_rr_8, |
148 | | | 148 | |
149 | /* write (single) */ | | 149 | /* write (single) */ |
150 | generic_bs_w_1, | | 150 | generic_bs_w_1, |
151 | generic_armv4_bs_w_2, | | 151 | generic_armv4_bs_w_2, |
152 | generic_bs_w_4, | | 152 | generic_bs_w_4, |
153 | bs_notimpl_bs_w_8, | | 153 | bs_notimpl_bs_w_8, |
154 | | | 154 | |
155 | /* write multiple */ | | 155 | /* write multiple */ |
156 | generic_bs_wm_1, | | 156 | generic_bs_wm_1, |
157 | generic_armv4_bs_wm_2, | | 157 | generic_armv4_bs_wm_2, |
158 | generic_bs_wm_4, | | 158 | generic_bs_wm_4, |
159 | bs_notimpl_bs_wm_8, | | 159 | bs_notimpl_bs_wm_8, |
160 | | | 160 | |
161 | /* write region */ | | 161 | /* write region */ |
162 | generic_bs_wr_1, | | 162 | generic_bs_wr_1, |
163 | generic_armv4_bs_wr_2, | | 163 | generic_armv4_bs_wr_2, |
164 | generic_bs_wr_4, | | 164 | generic_bs_wr_4, |
165 | bs_notimpl_bs_wr_8, | | 165 | bs_notimpl_bs_wr_8, |
166 | #endif | | 166 | #endif |
167 | }; | | 167 | }; |
168 | | | 168 | |
169 | struct bus_space bcm2835_a4x_bs_tag = { | | 169 | struct bus_space bcm2835_a4x_bs_tag = { |
170 | /* cookie */ | | 170 | /* cookie */ |
171 | (void *) 0, | | 171 | (void *) 0, |
172 | | | 172 | |
173 | /* mapping/unmapping */ | | 173 | /* mapping/unmapping */ |
174 | bcm2835_bs_map, | | 174 | bcm2835_bs_map, |
175 | bcm2835_bs_unmap, | | 175 | bcm2835_bs_unmap, |
176 | bcm2835_bs_subregion, | | 176 | bcm2835_bs_subregion, |
177 | | | 177 | |
178 | /* allocation/deallocation */ | | 178 | /* allocation/deallocation */ |
179 | bcm2835_bs_alloc, /* not implemented */ | | 179 | bcm2835_bs_alloc, /* not implemented */ |
180 | bcm2835_bs_free, /* not implemented */ | | 180 | bcm2835_bs_free, /* not implemented */ |
181 | | | 181 | |
182 | /* get kernel virtual address */ | | 182 | /* get kernel virtual address */ |
183 | bcm2835_bs_vaddr, | | 183 | bcm2835_bs_vaddr, |
184 | | | 184 | |
185 | /* mmap */ | | 185 | /* mmap */ |
186 | bs_notimpl_bs_mmap, | | 186 | bs_notimpl_bs_mmap, |
187 | | | 187 | |
188 | /* barrier */ | | 188 | /* barrier */ |
189 | bcm2835_bs_barrier, | | 189 | bcm2835_bs_barrier, |
190 | | | 190 | |
191 | /* read (single) */ | | 191 | /* read (single) */ |
192 | a4x_bs_r_1, | | 192 | a4x_bs_r_1, |
193 | a4x_bs_r_2, | | 193 | a4x_bs_r_2, |
194 | a4x_bs_r_4, | | 194 | a4x_bs_r_4, |
195 | bs_notimpl_bs_r_8, | | 195 | bs_notimpl_bs_r_8, |
196 | | | 196 | |
197 | /* read multiple */ | | 197 | /* read multiple */ |
198 | a4x_bs_rm_1, | | 198 | a4x_bs_rm_1, |
199 | a4x_bs_rm_2, | | 199 | a4x_bs_rm_2, |
200 | a4x_bs_rm_4, | | 200 | a4x_bs_rm_4, |
201 | bs_notimpl_bs_rm_8, | | 201 | bs_notimpl_bs_rm_8, |
202 | | | 202 | |
203 | /* read region */ | | 203 | /* read region */ |
204 | bs_notimpl_bs_rr_1, | | 204 | bs_notimpl_bs_rr_1, |
205 | bs_notimpl_bs_rr_2, | | 205 | bs_notimpl_bs_rr_2, |
206 | bs_notimpl_bs_rr_4, | | 206 | bs_notimpl_bs_rr_4, |
207 | bs_notimpl_bs_rr_8, | | 207 | bs_notimpl_bs_rr_8, |
208 | | | 208 | |
209 | /* write (single) */ | | 209 | /* write (single) */ |
210 | a4x_bs_w_1, | | 210 | a4x_bs_w_1, |
211 | a4x_bs_w_2, | | 211 | a4x_bs_w_2, |
212 | a4x_bs_w_4, | | 212 | a4x_bs_w_4, |
213 | bs_notimpl_bs_w_8, | | 213 | bs_notimpl_bs_w_8, |
214 | | | 214 | |
215 | /* write multiple */ | | 215 | /* write multiple */ |
216 | a4x_bs_wm_1, | | 216 | a4x_bs_wm_1, |
217 | a4x_bs_wm_2, | | 217 | a4x_bs_wm_2, |
218 | a4x_bs_wm_4, | | 218 | a4x_bs_wm_4, |
219 | bs_notimpl_bs_wm_8, | | 219 | bs_notimpl_bs_wm_8, |
220 | /* write region */ | | 220 | /* write region */ |
221 | bs_notimpl_bs_wr_1, | | 221 | bs_notimpl_bs_wr_1, |
222 | bs_notimpl_bs_wr_2, | | 222 | bs_notimpl_bs_wr_2, |
223 | bs_notimpl_bs_wr_4, | | 223 | bs_notimpl_bs_wr_4, |
224 | bs_notimpl_bs_wr_8, | | 224 | bs_notimpl_bs_wr_8, |
225 | | | 225 | |
226 | /* set multiple */ | | 226 | /* set multiple */ |
227 | bs_notimpl_bs_sm_1, | | 227 | bs_notimpl_bs_sm_1, |
228 | bs_notimpl_bs_sm_2, | | 228 | bs_notimpl_bs_sm_2, |
229 | bs_notimpl_bs_sm_4, | | 229 | bs_notimpl_bs_sm_4, |
230 | bs_notimpl_bs_sm_8, | | 230 | bs_notimpl_bs_sm_8, |
231 | | | 231 | |
232 | /* set region */ | | 232 | /* set region */ |
233 | bs_notimpl_bs_sr_1, | | 233 | bs_notimpl_bs_sr_1, |
234 | bs_notimpl_bs_sr_2, | | 234 | bs_notimpl_bs_sr_2, |
235 | bs_notimpl_bs_sr_4, | | 235 | bs_notimpl_bs_sr_4, |
236 | bs_notimpl_bs_sr_8, | | 236 | bs_notimpl_bs_sr_8, |
237 | | | 237 | |
238 | /* copy */ | | 238 | /* copy */ |
239 | bs_notimpl_bs_c_1, | | 239 | bs_notimpl_bs_c_1, |
240 | bs_notimpl_bs_c_2, | | 240 | bs_notimpl_bs_c_2, |
241 | bs_notimpl_bs_c_4, | | 241 | bs_notimpl_bs_c_4, |
242 | bs_notimpl_bs_c_8, | | 242 | bs_notimpl_bs_c_8, |
243 | | | 243 | |
244 | #ifdef __BUS_SPACE_HAS_STREAM_METHODS | | 244 | #ifdef __BUS_SPACE_HAS_STREAM_METHODS |
245 | /* read (single) */ | | 245 | /* read (single) */ |
246 | generic_bs_r_1, | | 246 | generic_bs_r_1, |
247 | generic_armv4_bs_r_2, | | 247 | generic_armv4_bs_r_2, |
248 | generic_bs_r_4, | | 248 | generic_bs_r_4, |
249 | bs_notimpl_bs_r_8, | | 249 | bs_notimpl_bs_r_8, |
250 | | | 250 | |
251 | /* read multiple */ | | 251 | /* read multiple */ |
252 | generic_bs_rm_1, | | 252 | generic_bs_rm_1, |
253 | generic_armv4_bs_rm_2, | | 253 | generic_armv4_bs_rm_2, |
254 | generic_bs_rm_4, | | 254 | generic_bs_rm_4, |
255 | bs_notimpl_bs_rm_8, | | 255 | bs_notimpl_bs_rm_8, |
256 | | | 256 | |
257 | /* read region */ | | 257 | /* read region */ |
258 | generic_bs_rr_1, | | 258 | generic_bs_rr_1, |
259 | generic_armv4_bs_rr_2, | | 259 | generic_armv4_bs_rr_2, |
260 | generic_bs_rr_4, | | 260 | generic_bs_rr_4, |
261 | bs_notimpl_bs_rr_8, | | 261 | bs_notimpl_bs_rr_8, |
262 | | | 262 | |
263 | /* write (single) */ | | 263 | /* write (single) */ |
264 | generic_bs_w_1, | | 264 | generic_bs_w_1, |
265 | generic_armv4_bs_w_2, | | 265 | generic_armv4_bs_w_2, |
266 | generic_bs_w_4, | | 266 | generic_bs_w_4, |
267 | bs_notimpl_bs_w_8, | | 267 | bs_notimpl_bs_w_8, |
268 | | | 268 | |
269 | /* write multiple */ | | 269 | /* write multiple */ |
270 | generic_bs_wm_1, | | 270 | generic_bs_wm_1, |
271 | generic_armv4_bs_wm_2, | | 271 | generic_armv4_bs_wm_2, |
272 | generic_bs_wm_4, | | 272 | generic_bs_wm_4, |
273 | bs_notimpl_bs_wm_8, | | 273 | bs_notimpl_bs_wm_8, |
274 | | | 274 | |
275 | /* write region */ | | 275 | /* write region */ |
276 | generic_bs_wr_1, | | 276 | generic_bs_wr_1, |
277 | generic_armv4_bs_wr_2, | | 277 | generic_armv4_bs_wr_2, |
278 | generic_bs_wr_4, | | 278 | generic_bs_wr_4, |
279 | bs_notimpl_bs_wr_8, | | 279 | bs_notimpl_bs_wr_8, |
280 | #endif | | 280 | #endif |
281 | | | 281 | |
282 | }; | | 282 | }; |
283 | | | 283 | |
284 | | | 284 | |
285 | int | | 285 | int |
286 | bcm2835_bs_map(void *t, bus_addr_t ba, bus_size_t size, int flag, | | 286 | bcm2835_bs_map(void *t, bus_addr_t ba, bus_size_t size, int flag, |
287 | bus_space_handle_t *bshp) | | 287 | bus_space_handle_t *bshp) |
288 | { | | 288 | { |
289 | u_long startpa, endpa, pa; | | 289 | u_long startpa, endpa, pa; |
290 | vaddr_t va; | | 290 | vaddr_t va; |
291 | const struct pmap_devmap *pd; | | 291 | const struct pmap_devmap *pd; |
292 | int pmap_flags; | | 292 | int pmap_flags; |
293 | bool match = false; | | 293 | bool match = false; |
294 | | | 294 | |
295 | /* Attempt to find the PA device mapping */ | | 295 | /* Attempt to find the PA device mapping */ |
296 | if (ba >= BCM2835_PERIPHERALS_BASE_BUS && | | 296 | if (ba >= BCM2835_PERIPHERALS_BASE_BUS && |
297 | ba < BCM2835_PERIPHERALS_BASE_BUS + BCM2835_PERIPHERALS_SIZE) { | | 297 | ba < BCM2835_PERIPHERALS_BASE_BUS + BCM2835_PERIPHERALS_SIZE) { |
298 | match = true; | | 298 | match = true; |
299 | pa = BCM2835_PERIPHERALS_BUS_TO_PHYS(ba); | | 299 | pa = BCM2835_PERIPHERALS_BUS_TO_PHYS(ba); |
300 | | | 300 | |
301 | } | | 301 | } |
302 | #ifdef BCM2836 | | 302 | #ifdef BCM2836 |
303 | if (ba >= BCM2836_ARM_LOCAL_BASE && | | 303 | if (ba >= BCM2836_ARM_LOCAL_BASE && |
304 | ba < BCM2836_ARM_LOCAL_BASE + BCM2836_ARM_LOCAL_SIZE) { | | 304 | ba < BCM2836_ARM_LOCAL_BASE + BCM2836_ARM_LOCAL_SIZE) { |
305 | match = true; | | 305 | match = true; |
306 | pa = ba; | | 306 | pa = ba; |
307 | } | | 307 | } |
308 | #endif | | 308 | #endif |
309 | | | 309 | |
310 | if (match && (pd = pmap_devmap_find_pa(pa, size)) != NULL) { | | 310 | if (match && (pd = pmap_devmap_find_pa(pa, size)) != NULL) { |
311 | /* Device was statically mapped. */ | | 311 | /* Device was statically mapped. */ |
312 | *bshp = pd->pd_va + (pa - pd->pd_pa); | | 312 | *bshp = pd->pd_va + (pa - pd->pd_pa); |
313 | return 0; | | 313 | return 0; |
314 | } | | 314 | } |
315 | | | 315 | |
316 | /* Now assume bus address so convert to PA */ | | 316 | /* Now assume bus address so convert to PA */ |
317 | pa = ba & ~BCM2835_BUSADDR_CACHE_MASK; | | 317 | pa = ba & ~BCM2835_BUSADDR_CACHE_MASK; |
318 | | | 318 | |
319 | startpa = trunc_page(pa); | | 319 | startpa = trunc_page(pa); |
320 | endpa = round_page(pa + size); | | 320 | endpa = round_page(pa + size); |
321 | | | 321 | |
322 | /* XXX use extent manager to check duplicate mapping */ | | 322 | /* XXX use extent manager to check duplicate mapping */ |
323 | | | 323 | |
324 | va = uvm_km_alloc(kernel_map, endpa - startpa, 0, | | 324 | va = uvm_km_alloc(kernel_map, endpa - startpa, 0, |
325 | UVM_KMF_VAONLY | UVM_KMF_NOWAIT); | | 325 | UVM_KMF_VAONLY | UVM_KMF_NOWAIT); |
326 | if (!va) | | 326 | if (!va) |
327 | return ENOMEM; | | 327 | return ENOMEM; |
328 | | | 328 | |
329 | *bshp = (bus_space_handle_t)(va + (pa - startpa)); | | 329 | *bshp = (bus_space_handle_t)(va + (pa - startpa)); |
330 | | | 330 | |
331 | pmap_flags = (flag & BUS_SPACE_MAP_CACHEABLE) ? 0 : PMAP_NOCACHE; | | 331 | pmap_flags = (flag & BUS_SPACE_MAP_CACHEABLE) ? 0 : PMAP_NOCACHE; |
332 | for (pa = startpa; pa < endpa; pa += PAGE_SIZE, va += PAGE_SIZE) { | | 332 | for (pa = startpa; pa < endpa; pa += PAGE_SIZE, va += PAGE_SIZE) { |
333 | pmap_kenter_pa(va, pa, VM_PROT_READ | VM_PROT_WRITE, | | 333 | pmap_kenter_pa(va, pa, VM_PROT_READ | VM_PROT_WRITE, |
334 | pmap_flags); | | 334 | pmap_flags); |
335 | } | | 335 | } |
336 | pmap_update(pmap_kernel()); | | 336 | pmap_update(pmap_kernel()); |
337 | | | 337 | |
338 | return 0; | | 338 | return 0; |
339 | } | | 339 | } |
340 | | | 340 | |
341 | void | | 341 | void |
342 | bcm2835_bs_unmap(void *t, bus_space_handle_t bsh, bus_size_t size) | | 342 | bcm2835_bs_unmap(void *t, bus_space_handle_t bsh, bus_size_t size) |
343 | { | | 343 | { |
344 | vaddr_t va; | | 344 | vaddr_t va; |
345 | vsize_t sz; | | 345 | vsize_t sz; |
346 | | | 346 | |
347 | if (pmap_devmap_find_va(bsh, size) != NULL) { | | 347 | if (pmap_devmap_find_va(bsh, size) != NULL) { |
348 | /* Device was statically mapped; nothing to do. */ | | 348 | /* Device was statically mapped; nothing to do. */ |
349 | return; | | 349 | return; |
350 | } | | 350 | } |
351 | | | 351 | |
352 | va = trunc_page(bsh); | | 352 | va = trunc_page(bsh); |
353 | sz = round_page(bsh + size) - va; | | 353 | sz = round_page(bsh + size) - va; |
354 | | | 354 | |
355 | pmap_kremove(va, sz); | | 355 | pmap_kremove(va, sz); |
356 | pmap_update(pmap_kernel()); | | 356 | pmap_update(pmap_kernel()); |
357 | uvm_km_free(kernel_map, va, sz, UVM_KMF_VAONLY); | | 357 | uvm_km_free(kernel_map, va, sz, UVM_KMF_VAONLY); |
358 | } | | 358 | } |
359 | | | 359 | |
360 | | | 360 | |
361 | int | | 361 | int |
362 | bcm2835_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset, | | 362 | bcm2835_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset, |
363 | bus_size_t size, bus_space_handle_t *nbshp) | | 363 | bus_size_t size, bus_space_handle_t *nbshp) |
364 | { | | 364 | { |
365 | | | 365 | |
366 | *nbshp = bsh + offset; | | 366 | *nbshp = bsh + offset; |
367 | return (0); | | 367 | return 0; |
368 | } | | 368 | } |
369 | | | 369 | |
370 | void | | 370 | void |
371 | bcm2835_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset, | | 371 | bcm2835_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset, |
372 | bus_size_t len, int flags) | | 372 | bus_size_t len, int flags) |
373 | { | | 373 | { |
374 | flags &= BUS_SPACE_BARRIER_READ|BUS_SPACE_BARRIER_WRITE; | | 374 | flags &= BUS_SPACE_BARRIER_READ|BUS_SPACE_BARRIER_WRITE; |
375 | | | 375 | |
376 | if (flags) | | 376 | if (flags) |
377 | arm_dsb(); | | 377 | arm_dsb(); |
378 | } | | 378 | } |
379 | | | 379 | |
380 | void * | | 380 | void * |
381 | bcm2835_bs_vaddr(void *t, bus_space_handle_t bsh) | | 381 | bcm2835_bs_vaddr(void *t, bus_space_handle_t bsh) |
382 | { | | 382 | { |
383 | | | 383 | |
384 | return (void *)bsh; | | 384 | return (void *)bsh; |
385 | } | | 385 | } |
386 | | | 386 | |
387 | paddr_t | | 387 | paddr_t |
388 | bcm2835_bs_mmap(void *t, bus_addr_t ba, off_t offset, int prot, int flags) | | 388 | bcm2835_bs_mmap(void *t, bus_addr_t ba, off_t offset, int prot, int flags) |
389 | { | | 389 | { |
390 | paddr_t pa = ba & ~BCM2835_BUSADDR_CACHE_MASK; | | 390 | paddr_t pa = ba & ~BCM2835_BUSADDR_CACHE_MASK; |
391 | paddr_t bus_flags = 0; | | 391 | paddr_t bus_flags = 0; |
392 | | | 392 | |
393 | if (flags & BUS_SPACE_MAP_PREFETCHABLE) | | 393 | if (flags & BUS_SPACE_MAP_PREFETCHABLE) |
394 | bus_flags |= ARM32_MMAP_WRITECOMBINE; | | 394 | bus_flags |= ARM32_MMAP_WRITECOMBINE; |
395 | | | 395 | |
396 | return (arm_btop(pa + offset) | bus_flags); | | 396 | return arm_btop(pa + offset) | bus_flags; |
397 | } | | 397 | } |
398 | | | 398 | |
399 | int | | 399 | int |
400 | bcm2835_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend, | | 400 | bcm2835_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend, |
401 | bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags, | | 401 | bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags, |
402 | bus_addr_t *bpap, bus_space_handle_t *bshp) | | 402 | bus_addr_t *bpap, bus_space_handle_t *bshp) |
403 | { | | 403 | { |
404 | | | 404 | |
405 | panic("%s(): not implemented\n", __func__); | | 405 | panic("%s(): not implemented\n", __func__); |
406 | } | | 406 | } |
407 | | | 407 | |
408 | void | | 408 | void |
409 | bcm2835_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size) | | 409 | bcm2835_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size) |
410 | { | | 410 | { |
411 | | | 411 | |
412 | panic("%s(): not implemented\n", __func__); | | 412 | panic("%s(): not implemented\n", __func__); |
413 | } | | 413 | } |