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 #if defined(KASAN) || defined(KCSAN) 29 #define SAN_RUNTIME 30 #endif 31 32 #include "opt_platform.h" 33 34 #include <sys/param.h> 35 __FBSDID("$FreeBSD$"); 36 37 #include <vm/vm.h> 38 #include <vm/pmap.h> 39 40 #include <machine/bus.h> 41 42 uint8_t generic_bs_r_1(void *, bus_space_handle_t, bus_size_t); 43 uint16_t generic_bs_r_2(void *, bus_space_handle_t, bus_size_t); 44 uint32_t generic_bs_r_4(void *, bus_space_handle_t, bus_size_t); 45 uint64_t generic_bs_r_8(void *, bus_space_handle_t, bus_size_t); 46 47 void generic_bs_rm_1(void *, bus_space_handle_t, bus_size_t, uint8_t *, 48 bus_size_t); 49 void generic_bs_rm_2(void *, bus_space_handle_t, bus_size_t, uint16_t *, 50 bus_size_t); 51 void generic_bs_rm_4(void *, bus_space_handle_t, bus_size_t, uint32_t *, 52 bus_size_t); 53 void generic_bs_rm_8(void *, bus_space_handle_t, bus_size_t, uint64_t *, 54 bus_size_t); 55 56 void generic_bs_rr_1(void *, bus_space_handle_t, bus_size_t, uint8_t *, 57 bus_size_t); 58 void generic_bs_rr_2(void *, bus_space_handle_t, bus_size_t, uint16_t *, 59 bus_size_t); 60 void generic_bs_rr_4(void *, bus_space_handle_t, bus_size_t, uint32_t *, 61 bus_size_t); 62 void generic_bs_rr_8(void *, bus_space_handle_t, bus_size_t, uint64_t *, 63 bus_size_t); 64 65 void generic_bs_w_1(void *, bus_space_handle_t, bus_size_t, uint8_t); 66 void generic_bs_w_2(void *, bus_space_handle_t, bus_size_t, uint16_t); 67 void generic_bs_w_4(void *, bus_space_handle_t, bus_size_t, uint32_t); 68 void generic_bs_w_8(void *, bus_space_handle_t, bus_size_t, uint64_t); 69 70 void generic_bs_wm_1(void *, bus_space_handle_t, bus_size_t, const uint8_t *, 71 bus_size_t); 72 void generic_bs_wm_2(void *, bus_space_handle_t, bus_size_t, const uint16_t *, 73 bus_size_t); 74 void generic_bs_wm_4(void *, bus_space_handle_t, bus_size_t, const uint32_t *, 75 bus_size_t); 76 void generic_bs_wm_8(void *, bus_space_handle_t, bus_size_t, const uint64_t *, 77 bus_size_t); 78 79 void generic_bs_wr_1(void *, bus_space_handle_t, bus_size_t, const uint8_t *, 80 bus_size_t); 81 void generic_bs_wr_2(void *, bus_space_handle_t, bus_size_t, const uint16_t *, 82 bus_size_t); 83 void generic_bs_wr_4(void *, bus_space_handle_t, bus_size_t, const uint32_t *, 84 bus_size_t); 85 void generic_bs_wr_8(void *, bus_space_handle_t, bus_size_t, const uint64_t *, 86 bus_size_t); 87 88 int generic_bs_peek_1(void *, bus_space_handle_t, bus_size_t , uint8_t *); 89 int generic_bs_peek_2(void *, bus_space_handle_t, bus_size_t , uint16_t *); 90 int generic_bs_peek_4(void *, bus_space_handle_t, bus_size_t , uint32_t *); 91 int generic_bs_peek_8(void *, bus_space_handle_t, bus_size_t , uint64_t *); 92 93 int generic_bs_poke_1(void *, bus_space_handle_t, bus_size_t, uint8_t); 94 int generic_bs_poke_2(void *, bus_space_handle_t, bus_size_t, uint16_t); 95 int generic_bs_poke_4(void *, bus_space_handle_t, bus_size_t, uint32_t); 96 int generic_bs_poke_8(void *, bus_space_handle_t, bus_size_t, uint64_t); 97 98 static int 99 generic_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags, 100 bus_space_handle_t *bshp) 101 { 102 vm_memattr_t ma; 103 void *va; 104 105 ma = VM_MEMATTR_DEVICE; 106 if (flags == BUS_SPACE_MAP_NONPOSTED) 107 ma = VM_MEMATTR_DEVICE_NP; 108 va = pmap_mapdev_attr(bpa, size, ma); 109 if (va == NULL) 110 return (ENOMEM); 111 *bshp = (bus_space_handle_t)va; 112 return (0); 113 } 114 115 static void 116 generic_bs_unmap(void *t, bus_space_handle_t bsh, bus_size_t size) 117 { 118 119 pmap_unmapdev((void *)bsh, size); 120 } 121 122 static void 123 generic_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset, 124 bus_size_t size, int flags) 125 { 126 } 127 128 static int 129 generic_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset, 130 bus_size_t size, bus_space_handle_t *nbshp) 131 { 132 133 *nbshp = bsh + offset; 134 return (0); 135 } 136 137 /* 138 * Write `count' 1, 2, 4, or 8 byte value `val' to bus space described 139 * by tag/handle starting at `offset'. 140 */ 141 static void 142 generic_bs_sr_1(void *t, bus_space_handle_t bsh, 143 bus_size_t offset, uint8_t value, size_t count) 144 { 145 146 for (; count != 0; count--, offset++) 147 generic_bs_w_1(t, bsh, offset, value); 148 } 149 150 static void 151 generic_bs_sr_2(void *t, bus_space_handle_t bsh, 152 bus_size_t offset, uint16_t value, size_t count) 153 { 154 155 for (; count != 0; count--, offset += 2) 156 generic_bs_w_2(t, bsh, offset, value); 157 } 158 159 static void 160 generic_bs_sr_4(void *t, bus_space_handle_t bsh, 161 bus_size_t offset, uint32_t value, size_t count) 162 { 163 164 for (; count != 0; count--, offset += 4) 165 generic_bs_w_4(t, bsh, offset, value); 166 } 167 168 static void 169 generic_bs_sr_8(void *t, bus_space_handle_t bsh, bus_size_t offset, 170 uint64_t value, size_t count) 171 { 172 173 for (; count != 0; count--, offset += 8) 174 generic_bs_w_8(t, bsh, offset, value); 175 } 176 177 struct bus_space memmap_bus = { 178 /* cookie */ 179 .bs_cookie = NULL, 180 181 /* mapping/unmapping */ 182 .bs_map = generic_bs_map, 183 .bs_unmap = generic_bs_unmap, 184 .bs_subregion = generic_bs_subregion, 185 186 /* allocation/deallocation */ 187 .bs_alloc = NULL, 188 .bs_free = NULL, 189 190 /* barrier */ 191 .bs_barrier = generic_bs_barrier, 192 193 /* read single */ 194 .bs_r_1 = generic_bs_r_1, 195 .bs_r_2 = generic_bs_r_2, 196 .bs_r_4 = generic_bs_r_4, 197 .bs_r_8 = generic_bs_r_8, 198 199 /* read multiple */ 200 .bs_rm_1 = generic_bs_rm_1, 201 .bs_rm_2 = generic_bs_rm_2, 202 .bs_rm_4 = generic_bs_rm_4, 203 .bs_rm_8 = generic_bs_rm_8, 204 205 /* read region */ 206 .bs_rr_1 = generic_bs_rr_1, 207 .bs_rr_2 = generic_bs_rr_2, 208 .bs_rr_4 = generic_bs_rr_4, 209 .bs_rr_8 = generic_bs_rr_8, 210 211 /* write single */ 212 .bs_w_1 = generic_bs_w_1, 213 .bs_w_2 = generic_bs_w_2, 214 .bs_w_4 = generic_bs_w_4, 215 .bs_w_8 = generic_bs_w_8, 216 217 /* write multiple */ 218 .bs_wm_1 = generic_bs_wm_1, 219 .bs_wm_2 = generic_bs_wm_2, 220 .bs_wm_4 = generic_bs_wm_4, 221 .bs_wm_8 = generic_bs_wm_8, 222 223 /* write region */ 224 .bs_wr_1 = generic_bs_wr_1, 225 .bs_wr_2 = generic_bs_wr_2, 226 .bs_wr_4 = generic_bs_wr_4, 227 .bs_wr_8 = generic_bs_wr_8, 228 229 /* set multiple */ 230 .bs_sm_1 = NULL, 231 .bs_sm_2 = NULL, 232 .bs_sm_4 = NULL, 233 .bs_sm_8 = NULL, 234 235 /* set region */ 236 .bs_sr_1 = generic_bs_sr_1, 237 .bs_sr_2 = generic_bs_sr_2, 238 .bs_sr_4 = generic_bs_sr_4, 239 .bs_sr_8 = generic_bs_sr_8, 240 241 /* copy */ 242 .bs_c_1 = NULL, 243 .bs_c_2 = NULL, 244 .bs_c_4 = NULL, 245 .bs_c_8 = NULL, 246 247 /* read single stream */ 248 .bs_r_1_s = NULL, 249 .bs_r_2_s = NULL, 250 .bs_r_4_s = NULL, 251 .bs_r_8_s = NULL, 252 253 /* read multiple stream */ 254 .bs_rm_1_s = generic_bs_rm_1, 255 .bs_rm_2_s = generic_bs_rm_2, 256 .bs_rm_4_s = generic_bs_rm_4, 257 .bs_rm_8_s = generic_bs_rm_8, 258 259 /* read region stream */ 260 .bs_rr_1_s = NULL, 261 .bs_rr_2_s = NULL, 262 .bs_rr_4_s = NULL, 263 .bs_rr_8_s = NULL, 264 265 /* write single stream */ 266 .bs_w_1_s = NULL, 267 .bs_w_2_s = NULL, 268 .bs_w_4_s = NULL, 269 .bs_w_8_s = NULL, 270 271 /* write multiple stream */ 272 .bs_wm_1_s = generic_bs_wm_1, 273 .bs_wm_2_s = generic_bs_wm_2, 274 .bs_wm_4_s = generic_bs_wm_4, 275 .bs_wm_8_s = generic_bs_wm_8, 276 277 /* write region stream */ 278 .bs_wr_1_s = NULL, 279 .bs_wr_2_s = NULL, 280 .bs_wr_4_s = NULL, 281 .bs_wr_8_s = NULL, 282 283 /* peek */ 284 .bs_peek_1 = generic_bs_peek_1, 285 .bs_peek_2 = generic_bs_peek_2, 286 .bs_peek_4 = generic_bs_peek_4, 287 .bs_peek_8 = generic_bs_peek_8, 288 289 /* poke */ 290 .bs_poke_1 = generic_bs_poke_1, 291 .bs_poke_2 = generic_bs_poke_2, 292 .bs_poke_4 = generic_bs_poke_4, 293 .bs_poke_8 = generic_bs_poke_8, 294 }; 295 296 #ifdef FDT 297 bus_space_tag_t fdtbus_bs_tag = &memmap_bus; 298 #endif 299