2 * Copyright (c) 2014 Andrew Turner
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
30 #include "opt_platform.h"
32 #include <sys/param.h>
33 __FBSDID("$FreeBSD$");
38 #include <machine/bus.h>
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);
45 void generic_bs_rm_1(void *, bus_space_handle_t, bus_size_t, uint8_t *,
47 void generic_bs_rm_2(void *, bus_space_handle_t, bus_size_t, uint16_t *,
49 void generic_bs_rm_4(void *, bus_space_handle_t, bus_size_t, uint32_t *,
51 void generic_bs_rm_8(void *, bus_space_handle_t, bus_size_t, uint64_t *,
54 void generic_bs_rr_1(void *, bus_space_handle_t, bus_size_t, uint8_t *,
56 void generic_bs_rr_2(void *, bus_space_handle_t, bus_size_t, uint16_t *,
58 void generic_bs_rr_4(void *, bus_space_handle_t, bus_size_t, uint32_t *,
60 void generic_bs_rr_8(void *, bus_space_handle_t, bus_size_t, uint64_t *,
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);
68 void generic_bs_wm_1(void *, bus_space_handle_t, bus_size_t, const uint8_t *,
70 void generic_bs_wm_2(void *, bus_space_handle_t, bus_size_t, const uint16_t *,
72 void generic_bs_wm_4(void *, bus_space_handle_t, bus_size_t, const uint32_t *,
74 void generic_bs_wm_8(void *, bus_space_handle_t, bus_size_t, const uint64_t *,
77 void generic_bs_wr_1(void *, bus_space_handle_t, bus_size_t, const uint8_t *,
79 void generic_bs_wr_2(void *, bus_space_handle_t, bus_size_t, const uint16_t *,
81 void generic_bs_wr_4(void *, bus_space_handle_t, bus_size_t, const uint32_t *,
83 void generic_bs_wr_8(void *, bus_space_handle_t, bus_size_t, const uint64_t *,
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 *);
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);
97 generic_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags,
98 bus_space_handle_t *bshp)
102 va = pmap_mapdev(bpa, size);
105 *bshp = (bus_space_handle_t)va;
110 generic_bs_unmap(void *t, bus_space_handle_t bsh, bus_size_t size)
113 pmap_unmapdev(bsh, size);
117 generic_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset,
118 bus_size_t size, int flags)
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)
127 *nbshp = bsh + offset;
132 * Write `count' 1, 2, 4, or 8 byte value `val' to bus space described
133 * by tag/handle starting at `offset'.
136 generic_bs_sr_1(void *t, bus_space_handle_t bsh,
137 bus_size_t offset, uint8_t value, size_t count)
139 bus_addr_t addr = bsh + offset;
141 for (; count != 0; count--, addr++)
142 generic_bs_w_1(t, bsh, addr, value);
146 generic_bs_sr_2(void *t, bus_space_handle_t bsh,
147 bus_size_t offset, uint16_t value, size_t count)
149 bus_addr_t addr = bsh + offset;
151 for (; count != 0; count--, addr += 2)
152 generic_bs_w_2(t, bsh, addr, value);
156 generic_bs_sr_4(void *t, bus_space_handle_t bsh,
157 bus_size_t offset, uint32_t value, size_t count)
159 bus_addr_t addr = bsh + offset;
161 for (; count != 0; count--, addr += 4)
162 generic_bs_w_4(t, bsh, addr, value);
166 generic_bs_sr_8(void *t, bus_space_handle_t bsh, bus_size_t offset,
167 uint64_t value, size_t count)
169 bus_addr_t addr = bsh + offset;
171 for (; count != 0; count--, addr += 8)
172 generic_bs_w_8(t, bsh, addr, value);
175 struct bus_space memmap_bus = {
179 /* mapping/unmapping */
180 .bs_map = generic_bs_map,
181 .bs_unmap = generic_bs_unmap,
182 .bs_subregion = generic_bs_subregion,
184 /* allocation/deallocation */
189 .bs_barrier = generic_bs_barrier,
192 .bs_r_1 = generic_bs_r_1,
193 .bs_r_2 = generic_bs_r_2,
194 .bs_r_4 = generic_bs_r_4,
195 .bs_r_8 = generic_bs_r_8,
198 .bs_rm_1 = generic_bs_rm_1,
199 .bs_rm_2 = generic_bs_rm_2,
200 .bs_rm_4 = generic_bs_rm_4,
201 .bs_rm_8 = generic_bs_rm_8,
204 .bs_rr_1 = generic_bs_rr_1,
205 .bs_rr_2 = generic_bs_rr_2,
206 .bs_rr_4 = generic_bs_rr_4,
207 .bs_rr_8 = generic_bs_rr_8,
210 .bs_w_1 = generic_bs_w_1,
211 .bs_w_2 = generic_bs_w_2,
212 .bs_w_4 = generic_bs_w_4,
213 .bs_w_8 = generic_bs_w_8,
216 .bs_wm_1 = generic_bs_wm_1,
217 .bs_wm_2 = generic_bs_wm_2,
218 .bs_wm_4 = generic_bs_wm_4,
219 .bs_wm_8 = generic_bs_wm_8,
222 .bs_wr_1 = generic_bs_wr_1,
223 .bs_wr_2 = generic_bs_wr_2,
224 .bs_wr_4 = generic_bs_wr_4,
225 .bs_wr_8 = generic_bs_wr_8,
234 .bs_sr_1 = generic_bs_sr_1,
235 .bs_sr_2 = generic_bs_sr_2,
236 .bs_sr_4 = generic_bs_sr_4,
237 .bs_sr_8 = generic_bs_sr_8,
245 /* read single stream */
251 /* read multiple stream */
252 .bs_rm_1_s = generic_bs_rm_1,
253 .bs_rm_2_s = generic_bs_rm_2,
254 .bs_rm_4_s = generic_bs_rm_4,
255 .bs_rm_8_s = generic_bs_rm_8,
257 /* read region stream */
263 /* write single stream */
269 /* write multiple stream */
270 .bs_wm_1_s = generic_bs_wm_1,
271 .bs_wm_2_s = generic_bs_wm_2,
272 .bs_wm_4_s = generic_bs_wm_4,
273 .bs_wm_8_s = generic_bs_wm_8,
275 /* write region stream */
282 .bs_peek_1 = generic_bs_peek_1,
283 .bs_peek_2 = generic_bs_peek_2,
284 .bs_peek_4 = generic_bs_peek_4,
285 .bs_peek_8 = generic_bs_peek_8,
288 .bs_poke_1 = generic_bs_poke_1,
289 .bs_poke_2 = generic_bs_poke_2,
290 .bs_poke_4 = generic_bs_poke_4,
291 .bs_poke_8 = generic_bs_poke_8,
295 bus_space_tag_t fdtbus_bs_tag = &memmap_bus;