1 /* $NetBSD: mainbus.c,v 1.15 2026/04/26 12:49:36 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Leo Weppelman. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 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 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 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 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 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: mainbus.c,v 1.15 2026/04/26 12:49:36 thorpej Exp $"); 34 35 #include <sys/types.h> 36 #include <sys/param.h> 37 #include <sys/systm.h> 38 #include <sys/kmem.h> 39 #include <machine/cpu.h> 40 #include <sys/bus.h> 41 42 static int mb_bus_space_peek_1(bus_space_tag_t, 43 bus_space_handle_t, bus_size_t); 44 static int mb_bus_space_peek_2(bus_space_tag_t, 45 bus_space_handle_t, bus_size_t); 46 static int mb_bus_space_peek_4(bus_space_tag_t, 47 bus_space_handle_t, bus_size_t); 48 static int mb_bus_space_peek_8(bus_space_tag_t, 49 bus_space_handle_t, bus_size_t); 50 static uint8_t mb_bus_space_read_1(bus_space_tag_t, 51 bus_space_handle_t, bus_size_t); 52 static uint16_t mb_bus_space_read_2(bus_space_tag_t, 53 bus_space_handle_t, bus_size_t); 54 static uint32_t mb_bus_space_read_4(bus_space_tag_t, 55 bus_space_handle_t, bus_size_t); 56 static uint64_t mb_bus_space_read_8(bus_space_tag_t, 57 bus_space_handle_t, bus_size_t); 58 static void mb_bus_space_write_1(bus_space_tag_t, 59 bus_space_handle_t, bus_size_t, uint8_t); 60 static void mb_bus_space_write_2(bus_space_tag_t, 61 bus_space_handle_t, bus_size_t, uint16_t); 62 static void mb_bus_space_write_4(bus_space_tag_t, 63 bus_space_handle_t, bus_size_t, uint32_t); 64 static void mb_bus_space_write_8(bus_space_tag_t, 65 bus_space_handle_t, bus_size_t, uint64_t); 66 static void mb_bus_space_read_multi_1(bus_space_tag_t, 67 bus_space_handle_t, bus_size_t, uint8_t *, 68 bus_size_t); 69 static void mb_bus_space_read_multi_2(bus_space_tag_t, 70 bus_space_handle_t, bus_size_t, uint16_t *, 71 bus_size_t); 72 static void mb_bus_space_read_multi_4(bus_space_tag_t, 73 bus_space_handle_t, bus_size_t, uint32_t *, 74 bus_size_t); 75 static void mb_bus_space_read_multi_8(bus_space_tag_t, 76 bus_space_handle_t, bus_size_t, uint64_t *, 77 bus_size_t); 78 static void mb_bus_space_write_multi_1(bus_space_tag_t, 79 bus_space_handle_t, bus_size_t, 80 const uint8_t *, bus_size_t); 81 static void mb_bus_space_write_multi_2(bus_space_tag_t, 82 bus_space_handle_t, bus_size_t, 83 const uint16_t *, bus_size_t); 84 static void mb_bus_space_write_multi_4(bus_space_tag_t, 85 bus_space_handle_t, bus_size_t, 86 const uint32_t *, bus_size_t); 87 static void mb_bus_space_write_multi_8(bus_space_tag_t, 88 bus_space_handle_t, bus_size_t, 89 const uint64_t *, bus_size_t); 90 static void mb_bus_space_read_region_1(bus_space_tag_t, 91 bus_space_handle_t, bus_size_t, uint8_t *, 92 bus_size_t); 93 static void mb_bus_space_read_region_2(bus_space_tag_t, 94 bus_space_handle_t, bus_size_t, uint16_t *, 95 bus_size_t); 96 static void mb_bus_space_read_region_4(bus_space_tag_t, 97 bus_space_handle_t, bus_size_t, uint32_t *, 98 bus_size_t); 99 static void mb_bus_space_read_region_8(bus_space_tag_t, 100 bus_space_handle_t, bus_size_t, uint64_t *, 101 bus_size_t); 102 static void mb_bus_space_write_region_1(bus_space_tag_t, 103 bus_space_handle_t, bus_size_t, 104 const uint8_t *, bus_size_t); 105 static void mb_bus_space_write_region_2(bus_space_tag_t, 106 bus_space_handle_t, bus_size_t, 107 const uint16_t *, bus_size_t); 108 static void mb_bus_space_write_region_4(bus_space_tag_t, 109 bus_space_handle_t, bus_size_t, 110 const uint32_t *, bus_size_t); 111 static void mb_bus_space_write_region_8(bus_space_tag_t, 112 bus_space_handle_t, bus_size_t, 113 const uint64_t *, bus_size_t); 114 static void mb_bus_space_set_multi_1(bus_space_tag_t, 115 bus_space_handle_t, bus_size_t, uint8_t, 116 bus_size_t); 117 static void mb_bus_space_set_multi_2(bus_space_tag_t, 118 bus_space_handle_t, bus_size_t, uint16_t, 119 bus_size_t); 120 static void mb_bus_space_set_multi_4(bus_space_tag_t, 121 bus_space_handle_t, bus_size_t, uint32_t, 122 bus_size_t); 123 static void mb_bus_space_set_multi_8(bus_space_tag_t, 124 bus_space_handle_t, bus_size_t, uint64_t, 125 bus_size_t); 126 static void mb_bus_space_set_region_1(bus_space_tag_t, 127 bus_space_handle_t, bus_size_t, uint8_t, 128 bus_size_t); 129 static void mb_bus_space_set_region_2(bus_space_tag_t, 130 bus_space_handle_t, bus_size_t, uint16_t, 131 bus_size_t); 132 static void mb_bus_space_set_region_4(bus_space_tag_t, 133 bus_space_handle_t, bus_size_t, uint32_t, 134 bus_size_t); 135 static void mb_bus_space_set_region_8(bus_space_tag_t, 136 bus_space_handle_t, bus_size_t, uint64_t, 137 bus_size_t); 138 /* 139 * Calculate offset on the mainbus given a stride_shift and width_offset 140 */ 141 #define calc_addr(base, off, stride, wm) \ 142 ((u_long)(base) + ((off) << (stride)) + (wm)) 143 144 #define __read_1(t, h, o) \ 145 (*((volatile uint8_t *)(calc_addr(h, o, (t)->stride, (t)->wo_1)))) 146 #define __read_2(t, h, o) \ 147 (*((volatile uint16_t *)(calc_addr(h, o, (t)->stride, (t)->wo_2)))) 148 #define __read_4(t, h, o) \ 149 (*((volatile uint32_t *)(calc_addr(h, o, (t)->stride, (t)->wo_4)))) 150 #define __read_8(t, h, o) \ 151 (*((volatile uint64_t *)(calc_addr(h, o, (t)->stride, (t)->wo_8)))) 152 153 #define __write_1(t, h, o, v) \ 154 *((volatile uint8_t *)(calc_addr(h, o, (t)->stride, (t)->wo_1))) = v 155 156 #define __write_2(t, h, o, v) \ 157 *((volatile uint16_t *)(calc_addr(h, o, (t)->stride, (t)->wo_2))) = v 158 159 #define __write_4(t, h, o, v) \ 160 *((volatile uint32_t *)(calc_addr(h, o, (t)->stride, (t)->wo_4))) = v 161 162 #define __write_8(t, h, o, v) \ 163 *((volatile uint64_t *)(calc_addr(h, o, (t)->stride, (t)->wo_8))) = v 164 165 bus_space_tag_t 166 mb_alloc_bus_space_tag(void) 167 { 168 bus_space_tag_t mb_t; 169 170 mb_t = kmem_zalloc(sizeof(*mb_t), KM_SLEEP); 171 mb_t->abs_p_1 = mb_bus_space_peek_1; 172 mb_t->abs_p_2 = mb_bus_space_peek_2; 173 mb_t->abs_p_4 = mb_bus_space_peek_4; 174 mb_t->abs_p_8 = mb_bus_space_peek_8; 175 mb_t->abs_r_1 = mb_bus_space_read_1; 176 mb_t->abs_r_2 = mb_bus_space_read_2; 177 mb_t->abs_r_4 = mb_bus_space_read_4; 178 mb_t->abs_r_8 = mb_bus_space_read_8; 179 mb_t->abs_rs_1 = mb_bus_space_read_1; 180 mb_t->abs_rs_2 = mb_bus_space_read_2; 181 mb_t->abs_rs_4 = mb_bus_space_read_4; 182 mb_t->abs_rs_8 = mb_bus_space_read_8; 183 mb_t->abs_rm_1 = mb_bus_space_read_multi_1; 184 mb_t->abs_rm_2 = mb_bus_space_read_multi_2; 185 mb_t->abs_rm_4 = mb_bus_space_read_multi_4; 186 mb_t->abs_rm_8 = mb_bus_space_read_multi_8; 187 mb_t->abs_rms_1 = mb_bus_space_read_multi_1; 188 mb_t->abs_rms_2 = mb_bus_space_read_multi_2; 189 mb_t->abs_rms_4 = mb_bus_space_read_multi_4; 190 mb_t->abs_rms_8 = mb_bus_space_read_multi_8; 191 mb_t->abs_rr_1 = mb_bus_space_read_region_1; 192 mb_t->abs_rr_2 = mb_bus_space_read_region_2; 193 mb_t->abs_rr_4 = mb_bus_space_read_region_4; 194 mb_t->abs_rr_8 = mb_bus_space_read_region_8; 195 mb_t->abs_rrs_1 = mb_bus_space_read_region_1; 196 mb_t->abs_rrs_2 = mb_bus_space_read_region_2; 197 mb_t->abs_rrs_4 = mb_bus_space_read_region_4; 198 mb_t->abs_rrs_8 = mb_bus_space_read_region_8; 199 mb_t->abs_w_1 = mb_bus_space_write_1; 200 mb_t->abs_w_2 = mb_bus_space_write_2; 201 mb_t->abs_w_4 = mb_bus_space_write_4; 202 mb_t->abs_w_8 = mb_bus_space_write_8; 203 mb_t->abs_ws_1 = mb_bus_space_write_1; 204 mb_t->abs_ws_2 = mb_bus_space_write_2; 205 mb_t->abs_ws_4 = mb_bus_space_write_4; 206 mb_t->abs_ws_8 = mb_bus_space_write_8; 207 mb_t->abs_wm_1 = mb_bus_space_write_multi_1; 208 mb_t->abs_wm_2 = mb_bus_space_write_multi_2; 209 mb_t->abs_wm_4 = mb_bus_space_write_multi_4; 210 mb_t->abs_wm_8 = mb_bus_space_write_multi_8; 211 mb_t->abs_wms_1 = mb_bus_space_write_multi_1; 212 mb_t->abs_wms_2 = mb_bus_space_write_multi_2; 213 mb_t->abs_wms_4 = mb_bus_space_write_multi_4; 214 mb_t->abs_wms_8 = mb_bus_space_write_multi_8; 215 mb_t->abs_wr_1 = mb_bus_space_write_region_1; 216 mb_t->abs_wr_2 = mb_bus_space_write_region_2; 217 mb_t->abs_wr_4 = mb_bus_space_write_region_4; 218 mb_t->abs_wr_8 = mb_bus_space_write_region_8; 219 mb_t->abs_wrs_1 = mb_bus_space_write_region_1; 220 mb_t->abs_wrs_2 = mb_bus_space_write_region_2; 221 mb_t->abs_wrs_4 = mb_bus_space_write_region_4; 222 mb_t->abs_wrs_8 = mb_bus_space_write_region_8; 223 mb_t->abs_sm_1 = mb_bus_space_set_multi_1; 224 mb_t->abs_sm_2 = mb_bus_space_set_multi_2; 225 mb_t->abs_sm_4 = mb_bus_space_set_multi_4; 226 mb_t->abs_sm_8 = mb_bus_space_set_multi_8; 227 mb_t->abs_sr_1 = mb_bus_space_set_region_1; 228 mb_t->abs_sr_2 = mb_bus_space_set_region_2; 229 mb_t->abs_sr_4 = mb_bus_space_set_region_4; 230 mb_t->abs_sr_8 = mb_bus_space_set_region_8; 231 232 return mb_t; 233 } 234 235 void 236 mb_free_bus_space_tag(bus_space_tag_t mb_t) 237 { 238 239 kmem_free(mb_t, sizeof(*mb_t)); 240 } 241 242 static int 243 mb_bus_space_peek_1(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o) 244 { 245 246 return !badaddr_sz((void *)(calc_addr(h, o, t->stride, t->wo_1)), 1); 247 } 248 249 static int 250 mb_bus_space_peek_2(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o) 251 { 252 253 return !badaddr_sz((void *)(calc_addr(h, o, t->stride, t->wo_2)), 2); 254 } 255 256 static int 257 mb_bus_space_peek_4(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o) 258 { 259 260 return !badaddr_sz((void *)(calc_addr(h, o, t->stride, t->wo_4)), 4); 261 } 262 263 static int 264 mb_bus_space_peek_8(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o) 265 { 266 267 return !badaddr_sz((void *)(calc_addr(h, o, t->stride, t->wo_8)), 8); 268 } 269 270 static uint8_t 271 mb_bus_space_read_1(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o) 272 { 273 274 return __read_1(t, h, o); 275 } 276 277 static uint16_t 278 mb_bus_space_read_2(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o) 279 { 280 281 return __read_2(t, h, o); 282 } 283 284 static uint32_t 285 mb_bus_space_read_4(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o) 286 { 287 288 return __read_4(t, h, o); 289 } 290 291 static uint64_t 292 mb_bus_space_read_8(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o) 293 { 294 295 return __read_8(t, h, o); 296 } 297 298 static void 299 mb_bus_space_write_1(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o, 300 uint8_t v) 301 { 302 303 __write_1(t, h, o, v); 304 } 305 306 static void 307 mb_bus_space_write_2(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o, 308 uint16_t v) 309 { 310 311 __write_2(t, h, o, v); 312 } 313 314 static void 315 mb_bus_space_write_4(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o, 316 uint32_t v) 317 { 318 319 __write_4(t, h, o, v); 320 } 321 322 static void 323 mb_bus_space_write_8(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o, 324 uint64_t v) 325 { 326 327 __write_8(t, h, o, v); 328 } 329 330 331 static void 332 mb_bus_space_read_multi_1(bus_space_tag_t t, bus_space_handle_t h, 333 bus_size_t o, uint8_t *a, bus_size_t c) 334 { 335 volatile uint8_t *ba; 336 337 ba = (volatile uint8_t *)calc_addr(h, o, t->stride, t->wo_1); 338 for (; c; a++, c--) 339 *a = *ba; 340 } 341 342 static void 343 mb_bus_space_read_multi_2(bus_space_tag_t t, bus_space_handle_t h, 344 bus_size_t o, uint16_t *a, bus_size_t c) 345 { 346 volatile uint16_t *ba; 347 348 ba = (volatile uint16_t *)calc_addr(h, o, t->stride, t->wo_2); 349 for (; c; a++, c--) 350 *a = *ba; 351 } 352 353 static void 354 mb_bus_space_read_multi_4(bus_space_tag_t t, bus_space_handle_t h, 355 bus_size_t o, uint32_t *a, bus_size_t c) 356 { 357 volatile uint32_t *ba; 358 359 ba = (volatile uint32_t *)calc_addr(h, o, t->stride, t->wo_4); 360 for (; c; a++, c--) 361 *a = *ba; 362 } 363 364 static void 365 mb_bus_space_read_multi_8(bus_space_tag_t t, bus_space_handle_t h, 366 bus_size_t o, uint64_t *a, bus_size_t c) 367 { 368 volatile uint64_t *ba; 369 370 ba = (volatile uint64_t *)calc_addr(h, o, t->stride, t->wo_8); 371 for (; c; a++, c--) 372 *a = *ba; 373 } 374 375 static void 376 mb_bus_space_write_multi_1(bus_space_tag_t t, bus_space_handle_t h, 377 bus_size_t o, const uint8_t *a, bus_size_t c) 378 { 379 volatile uint8_t *ba; 380 381 ba = (volatile uint8_t *)calc_addr(h, o, t->stride, t->wo_1); 382 for (; c; a++, c--) 383 *ba = *a; 384 } 385 386 static void 387 mb_bus_space_write_multi_2(bus_space_tag_t t, bus_space_handle_t h, 388 bus_size_t o, const uint16_t *a, bus_size_t c) 389 { 390 volatile uint16_t *ba; 391 392 ba = (volatile uint16_t *)calc_addr(h, o, t->stride, t->wo_2); 393 for (; c; a++, c--) 394 *ba = *a; 395 } 396 397 static void 398 mb_bus_space_write_multi_4(bus_space_tag_t t, bus_space_handle_t h, 399 bus_size_t o, const uint32_t *a, bus_size_t c) 400 { 401 volatile uint32_t *ba; 402 403 ba = (volatile uint32_t *)calc_addr(h, o, t->stride, t->wo_4); 404 for (; c; a++, c--) 405 *ba = *a; 406 } 407 408 static void 409 mb_bus_space_write_multi_8(bus_space_tag_t t, bus_space_handle_t h, 410 bus_size_t o, const uint64_t *a, bus_size_t c) 411 { 412 volatile uint64_t *ba; 413 414 ba = (volatile uint64_t *)calc_addr(h, o, t->stride, t->wo_8); 415 for (; c; a++, c--) 416 *ba = *a; 417 } 418 419 /* 420 * void bus_space_read_region_N(bus_space_tag_t tag, 421 * bus_space_handle_t bsh, bus_size_t offset, 422 * uintN_t *addr, size_t count); 423 * 424 * Read `count' 1, 2, 4, or 8 byte quantities from bus space 425 * described by tag/handle and starting at `offset' and copy into 426 * buffer provided. 427 */ 428 static void 429 mb_bus_space_read_region_1(bus_space_tag_t t, bus_space_handle_t h, 430 bus_size_t o, uint8_t *a, bus_size_t c) 431 { 432 433 for (; c; a++, o++, c--) 434 *a = __read_1(t, h, o); 435 } 436 437 static void 438 mb_bus_space_read_region_2(bus_space_tag_t t, bus_space_handle_t h, 439 bus_size_t o, uint16_t *a, bus_size_t c) 440 { 441 442 for (; c; a++, o += 2, c--) 443 *a = __read_2(t, h, o); 444 } 445 446 static void 447 mb_bus_space_read_region_4(bus_space_tag_t t, bus_space_handle_t h, 448 bus_size_t o, uint32_t *a, bus_size_t c) 449 { 450 451 for (; c; a++, o += 4, c--) 452 *a = __read_4(t, h, o); 453 } 454 455 static void 456 mb_bus_space_read_region_8(bus_space_tag_t t, bus_space_handle_t h, 457 bus_size_t o, uint64_t *a, bus_size_t c) 458 { 459 460 for (; c; a++, o += 8, c--) 461 *a = __read_8(t, h, o); 462 } 463 464 /* 465 * void bus_space_write_region_N(bus_space_tag_t tag, 466 * bus_space_handle_t bsh, bus_size_t offset, 467 * uintN_t *addr, size_t count); 468 * 469 * Copy `count' 1, 2, 4, or 8 byte quantities from the buffer provided 470 * into the bus space described by tag/handle and starting at `offset'. 471 */ 472 static void 473 mb_bus_space_write_region_1(bus_space_tag_t t, bus_space_handle_t h, 474 bus_size_t o, const uint8_t *a, bus_size_t c) 475 { 476 477 for (; c; a++, o++, c--) 478 __write_1(t, h, o, *a); 479 } 480 481 static void 482 mb_bus_space_write_region_2(bus_space_tag_t t, bus_space_handle_t h, 483 bus_size_t o, const uint16_t *a, bus_size_t c) 484 { 485 486 for (; c; a++, o += 2, c--) 487 __write_2(t, h, o, *a); 488 } 489 490 static void 491 mb_bus_space_write_region_4(bus_space_tag_t t, bus_space_handle_t h, 492 bus_size_t o, const uint32_t *a, bus_size_t c) 493 { 494 495 for (; c; a++, o += 4, c--) 496 __write_4(t, h, o, *a); 497 } 498 499 static void 500 mb_bus_space_write_region_8(bus_space_tag_t t, bus_space_handle_t h, 501 bus_size_t o, const uint64_t *a, bus_size_t c) 502 { 503 504 for (; c; a++, o += 8, c--) 505 __write_8(t, h, o, *a); 506 } 507 508 /* 509 * void bus_space_set_multi_N(bus_space_tag_t tag, 510 * bus_space_handle_t bsh, bus_size_t offset, uintN_t val, 511 * size_t count); 512 * 513 * Write the 1, 2, 4, or 8 byte value `val' to bus space described 514 * by tag/handle/offset `count' times. 515 */ 516 517 static void 518 mb_bus_space_set_multi_1(bus_space_tag_t t, bus_space_handle_t h, 519 bus_size_t o, uint8_t v, bus_size_t c) 520 { 521 volatile uint8_t *ba; 522 523 ba = (volatile uint8_t *)calc_addr(h, o, t->stride, t->wo_1); 524 for (; c; c--) 525 *ba = v; 526 } 527 528 static void 529 mb_bus_space_set_multi_2(bus_space_tag_t t, bus_space_handle_t h, 530 bus_size_t o, uint16_t v, bus_size_t c) 531 { 532 volatile uint16_t *ba; 533 534 ba = (volatile uint16_t *)calc_addr(h, o, t->stride, t->wo_2); 535 for (; c; c--) 536 *ba = v; 537 } 538 539 static void 540 mb_bus_space_set_multi_4(bus_space_tag_t t, bus_space_handle_t h, 541 bus_size_t o, uint32_t v, bus_size_t c) 542 { 543 volatile uint32_t *ba; 544 545 ba = (volatile uint32_t *)calc_addr(h, o, t->stride, t->wo_4); 546 for (; c; c--) 547 *ba = v; 548 } 549 550 static void 551 mb_bus_space_set_multi_8(bus_space_tag_t t, bus_space_handle_t h, 552 bus_size_t o, uint64_t v, bus_size_t c) 553 { 554 volatile uint64_t *ba; 555 556 ba = (volatile uint64_t *)calc_addr(h, o, t->stride, t->wo_8); 557 for (; c; c--) 558 *ba = v; 559 } 560 561 /* 562 * void bus_space_set_region_N(bus_space_tag_t tag, 563 * bus_space_handle_t bsh, bus_size_t offset, uintN_t val, 564 * size_t count); 565 * 566 * Write `count' 1, 2, 4, or 8 byte value `val' to bus space described 567 * by tag/handle starting at `offset'. 568 */ 569 static void 570 mb_bus_space_set_region_1(bus_space_tag_t t, bus_space_handle_t h, 571 bus_size_t o, uint8_t v, bus_size_t c) 572 { 573 574 for (; c; o++, c--) 575 __write_1(t, h, o, v); 576 } 577 578 static void 579 mb_bus_space_set_region_2(bus_space_tag_t t, bus_space_handle_t h, 580 bus_size_t o, uint16_t v, bus_size_t c) 581 { 582 583 for (; c; o += 2, c--) 584 __write_2(t, h, o, v); 585 } 586 587 static void 588 mb_bus_space_set_region_4(bus_space_tag_t t, bus_space_handle_t h, 589 bus_size_t o, uint32_t v, bus_size_t c) 590 { 591 592 for (; c; o += 4, c--) 593 __write_4(t, h, o, v); 594 } 595 596 static void 597 mb_bus_space_set_region_8(bus_space_tag_t t, bus_space_handle_t h, 598 bus_size_t o, uint64_t v, bus_size_t c) 599 { 600 601 for (; c; o += 8, c--) 602 __write_8(t, h, o, v); 603 } 604
Indexes created Sun Oct 25 00:26:45 UTC 2026