1 /* $NetBSD: be_bus.c,v 1.19 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: be_bus.c,v 1.19 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 /* 43 * This file contains the common functions for using a big endian (linear) 44 * bus on a big endian atari. 45 */ 46 47 /* Autoconf detection stuff */ 48 static int beb_bus_space_peek_1(bus_space_tag_t, 49 bus_space_handle_t, bus_size_t); 50 static int beb_bus_space_peek_2(bus_space_tag_t, 51 bus_space_handle_t, bus_size_t); 52 static int beb_bus_space_peek_4(bus_space_tag_t, 53 bus_space_handle_t, bus_size_t); 54 static int beb_bus_space_peek_8(bus_space_tag_t, 55 bus_space_handle_t, bus_size_t); 56 57 /* read (single) */ 58 static uint8_t beb_bus_space_read_1(bus_space_tag_t, 59 bus_space_handle_t, bus_size_t); 60 static uint16_t beb_bus_space_read_2(bus_space_tag_t, 61 bus_space_handle_t, bus_size_t); 62 static uint32_t beb_bus_space_read_4(bus_space_tag_t, 63 bus_space_handle_t, bus_size_t); 64 static uint64_t beb_bus_space_read_8(bus_space_tag_t, 65 bus_space_handle_t, bus_size_t); 66 67 /* write (single) */ 68 static void beb_bus_space_write_1(bus_space_tag_t, 69 bus_space_handle_t, bus_size_t, uint8_t); 70 static void beb_bus_space_write_2(bus_space_tag_t, 71 bus_space_handle_t, bus_size_t, uint16_t); 72 static void beb_bus_space_write_4(bus_space_tag_t, 73 bus_space_handle_t, bus_size_t, uint32_t); 74 static void beb_bus_space_write_8(bus_space_tag_t, 75 bus_space_handle_t, bus_size_t, uint64_t); 76 77 /* read multiple */ 78 static void beb_bus_space_read_multi_1(bus_space_tag_t, 79 bus_space_handle_t, bus_size_t, uint8_t *, 80 bus_size_t); 81 static void beb_bus_space_read_multi_2(bus_space_tag_t, 82 bus_space_handle_t, bus_size_t, uint16_t *, 83 bus_size_t); 84 static void beb_bus_space_read_multi_4(bus_space_tag_t, 85 bus_space_handle_t, bus_size_t, uint32_t *, 86 bus_size_t); 87 static void beb_bus_space_read_multi_8(bus_space_tag_t, 88 bus_space_handle_t, bus_size_t, uint64_t *, 89 bus_size_t); 90 91 /* write multiple */ 92 static void beb_bus_space_write_multi_1(bus_space_tag_t, 93 bus_space_handle_t, bus_size_t, 94 const uint8_t *, bus_size_t); 95 static void beb_bus_space_write_multi_2(bus_space_tag_t, 96 bus_space_handle_t, bus_size_t, 97 const uint16_t *, bus_size_t); 98 static void beb_bus_space_write_multi_4(bus_space_tag_t, 99 bus_space_handle_t, bus_size_t, 100 const uint32_t *, bus_size_t); 101 static void beb_bus_space_write_multi_8(bus_space_tag_t, 102 bus_space_handle_t, bus_size_t, 103 const uint64_t *, bus_size_t); 104 105 /* read region */ 106 static void beb_bus_space_read_region_1(bus_space_tag_t, 107 bus_space_handle_t, bus_size_t, uint8_t *, 108 bus_size_t); 109 static void beb_bus_space_read_region_2(bus_space_tag_t, 110 bus_space_handle_t, bus_size_t, uint16_t *, 111 bus_size_t); 112 static void beb_bus_space_read_region_4(bus_space_tag_t, 113 bus_space_handle_t, bus_size_t, uint32_t *, 114 bus_size_t); 115 static void beb_bus_space_read_region_8(bus_space_tag_t, 116 bus_space_handle_t, bus_size_t, uint64_t *, 117 bus_size_t); 118 119 /* read region */ 120 static void beb_bus_space_write_region_1(bus_space_tag_t, 121 bus_space_handle_t, bus_size_t, 122 const uint8_t *, bus_size_t); 123 static void beb_bus_space_write_region_2(bus_space_tag_t, 124 bus_space_handle_t, bus_size_t, 125 const uint16_t *, bus_size_t); 126 static void beb_bus_space_write_region_4(bus_space_tag_t, 127 bus_space_handle_t, bus_size_t, 128 const uint32_t *, bus_size_t); 129 static void beb_bus_space_write_region_8(bus_space_tag_t, 130 bus_space_handle_t, bus_size_t, 131 const uint64_t *, bus_size_t); 132 133 /* set multi */ 134 static void beb_bus_space_set_multi_1(bus_space_tag_t, 135 bus_space_handle_t, bus_size_t, uint8_t, 136 bus_size_t); 137 static void beb_bus_space_set_multi_2(bus_space_tag_t, 138 bus_space_handle_t, bus_size_t, uint16_t, 139 bus_size_t); 140 static void beb_bus_space_set_multi_4(bus_space_tag_t, 141 bus_space_handle_t, bus_size_t, uint32_t, 142 bus_size_t); 143 static void beb_bus_space_set_multi_8(bus_space_tag_t, 144 bus_space_handle_t, bus_size_t, uint64_t, 145 bus_size_t); 146 147 /* set region */ 148 static void beb_bus_space_set_region_1(bus_space_tag_t, 149 bus_space_handle_t, bus_size_t, uint8_t, 150 bus_size_t); 151 static void beb_bus_space_set_region_2(bus_space_tag_t, 152 bus_space_handle_t, bus_size_t, uint16_t, 153 bus_size_t); 154 static void beb_bus_space_set_region_4(bus_space_tag_t, 155 bus_space_handle_t, bus_size_t, uint32_t, 156 bus_size_t); 157 static void beb_bus_space_set_region_8(bus_space_tag_t, 158 bus_space_handle_t, bus_size_t, uint64_t, 159 bus_size_t); 160 161 /* 162 * Don't force a function call overhead on these primitives... 163 */ 164 #define __read_1(h, o) *((volatile uint8_t *)((h) + (o))) 165 #define __read_2(h, o) *((volatile uint16_t *)((h) + (o))) 166 #define __read_4(h, o) *((volatile uint32_t *)((h) + (o))) 167 #define __read_8(h, o) *((volatile uint64_t *)((h) + (o))) 168 169 #define __write_1(h, o, v) *((volatile uint8_t *)((h) + (o))) = (v) 170 #define __write_2(h, o, v) *((volatile uint16_t *)((h) + (o))) = (v) 171 #define __write_4(h, o, v) *((volatile uint32_t *)((h) + (o))) = (v) 172 #define __write_8(h, o, v) *((volatile uint64_t *)((h) + (o))) = (v) 173 174 bus_space_tag_t 175 beb_alloc_bus_space_tag(bus_space_tag_t storage) 176 { 177 bus_space_tag_t beb_t; 178 179 /* 180 * Allow the caller to specify storage space for the tag. This 181 * is used during console config (when kmem_alloc() can't be used). 182 */ 183 if (storage != NULL) 184 beb_t = storage; 185 else { 186 beb_t = kmem_alloc(sizeof(*beb_t), KM_SLEEP); 187 } 188 memset(beb_t, 0, sizeof(*beb_t)); 189 190 beb_t->abs_p_1 = beb_bus_space_peek_1; 191 beb_t->abs_p_2 = beb_bus_space_peek_2; 192 beb_t->abs_p_4 = beb_bus_space_peek_4; 193 beb_t->abs_p_8 = beb_bus_space_peek_8; 194 beb_t->abs_r_1 = beb_bus_space_read_1; 195 beb_t->abs_r_2 = beb_bus_space_read_2; 196 beb_t->abs_r_4 = beb_bus_space_read_4; 197 beb_t->abs_r_8 = beb_bus_space_read_8; 198 beb_t->abs_rs_1 = beb_bus_space_read_1; 199 beb_t->abs_rs_2 = beb_bus_space_read_2; 200 beb_t->abs_rs_4 = beb_bus_space_read_4; 201 beb_t->abs_rs_8 = beb_bus_space_read_8; 202 beb_t->abs_rm_1 = beb_bus_space_read_multi_1; 203 beb_t->abs_rm_2 = beb_bus_space_read_multi_2; 204 beb_t->abs_rm_4 = beb_bus_space_read_multi_4; 205 beb_t->abs_rm_8 = beb_bus_space_read_multi_8; 206 beb_t->abs_rms_1 = beb_bus_space_read_multi_1; 207 beb_t->abs_rms_2 = beb_bus_space_read_multi_2; 208 beb_t->abs_rms_4 = beb_bus_space_read_multi_4; 209 beb_t->abs_rms_8 = beb_bus_space_read_multi_8; 210 beb_t->abs_rr_1 = beb_bus_space_read_region_1; 211 beb_t->abs_rr_2 = beb_bus_space_read_region_2; 212 beb_t->abs_rr_4 = beb_bus_space_read_region_4; 213 beb_t->abs_rr_8 = beb_bus_space_read_region_8; 214 beb_t->abs_rrs_1 = beb_bus_space_read_region_1; 215 beb_t->abs_rrs_2 = beb_bus_space_read_region_2; 216 beb_t->abs_rrs_4 = beb_bus_space_read_region_4; 217 beb_t->abs_rrs_8 = beb_bus_space_read_region_8; 218 beb_t->abs_w_1 = beb_bus_space_write_1; 219 beb_t->abs_w_2 = beb_bus_space_write_2; 220 beb_t->abs_w_4 = beb_bus_space_write_4; 221 beb_t->abs_w_8 = beb_bus_space_write_8; 222 beb_t->abs_ws_1 = beb_bus_space_write_1; 223 beb_t->abs_ws_2 = beb_bus_space_write_2; 224 beb_t->abs_ws_4 = beb_bus_space_write_4; 225 beb_t->abs_ws_8 = beb_bus_space_write_8; 226 beb_t->abs_wm_1 = beb_bus_space_write_multi_1; 227 beb_t->abs_wm_2 = beb_bus_space_write_multi_2; 228 beb_t->abs_wm_4 = beb_bus_space_write_multi_4; 229 beb_t->abs_wm_8 = beb_bus_space_write_multi_8; 230 beb_t->abs_wms_1 = beb_bus_space_write_multi_1; 231 beb_t->abs_wms_2 = beb_bus_space_write_multi_2; 232 beb_t->abs_wms_4 = beb_bus_space_write_multi_4; 233 beb_t->abs_wms_8 = beb_bus_space_write_multi_8; 234 beb_t->abs_wr_1 = beb_bus_space_write_region_1; 235 beb_t->abs_wr_2 = beb_bus_space_write_region_2; 236 beb_t->abs_wr_4 = beb_bus_space_write_region_4; 237 beb_t->abs_wr_8 = beb_bus_space_write_region_8; 238 beb_t->abs_wrs_1 = beb_bus_space_write_region_1; 239 beb_t->abs_wrs_2 = beb_bus_space_write_region_2; 240 beb_t->abs_wrs_4 = beb_bus_space_write_region_4; 241 beb_t->abs_wrs_8 = beb_bus_space_write_region_8; 242 beb_t->abs_sm_1 = beb_bus_space_set_multi_1; 243 beb_t->abs_sm_2 = beb_bus_space_set_multi_2; 244 beb_t->abs_sm_4 = beb_bus_space_set_multi_4; 245 beb_t->abs_sm_8 = beb_bus_space_set_multi_8; 246 beb_t->abs_sr_1 = beb_bus_space_set_region_1; 247 beb_t->abs_sr_2 = beb_bus_space_set_region_2; 248 beb_t->abs_sr_4 = beb_bus_space_set_region_4; 249 beb_t->abs_sr_8 = beb_bus_space_set_region_8; 250 251 return beb_t; 252 } 253 254 255 /* 256 * The various access functions 257 */ 258 259 /* 260 * int bus_space_peek_N(bus_space_tag_t tag, 261 * bus_space_handle_t sh, bus_size_t offset); 262 * 263 * Check if the address is suitable for reading N-byte quantities. 264 */ 265 static int 266 beb_bus_space_peek_1(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o) 267 { 268 269 return !badaddr_sz((void *)(h + o), 1); 270 } 271 272 static int 273 beb_bus_space_peek_2(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o) 274 { 275 276 return !badaddr_sz((void *)(h + o), 2); 277 } 278 279 static int 280 beb_bus_space_peek_4(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o) 281 { 282 283 return !badaddr_sz((void *)(h + o), 4); 284 } 285 286 static int 287 beb_bus_space_peek_8(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o) 288 { 289 290 return !badaddr_sz((void *)(h + o), 8); 291 } 292 293 /* 294 * uintX_t bus_space_read_N(bus_space_tag_t tag, 295 * bus_space_handle_t bsh, bus_size_t offset); 296 * 297 * Return an 1, 2, 4, or 8 byte value read from the bus_space described 298 * by tag/handle at `offset'. The value is converted to host-endian. 299 */ 300 static uint8_t 301 beb_bus_space_read_1(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o) 302 { 303 304 return __read_1(h, o); 305 } 306 307 static uint16_t 308 beb_bus_space_read_2(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o) 309 { 310 311 return __read_2(h, o); 312 } 313 314 static uint32_t 315 beb_bus_space_read_4(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o) 316 { 317 318 return __read_4(h, o); 319 } 320 321 static uint64_t 322 beb_bus_space_read_8(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o) 323 { 324 325 return __read_8(h, o); 326 } 327 328 /* 329 * uintX_t bus_space_write_N(bus_space_tag_t tag, 330 * bus_space_handle_t bsh, bus_size_t offset, uintX_t val); 331 * 332 * Write an 1, 2, 4, or 8 byte value to the bus_space described by tag/handle 333 * at `offset'. The value `val' is converted from host to bus endianness 334 * before being written. 335 */ 336 static void 337 beb_bus_space_write_1(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o, 338 uint8_t v) 339 { 340 341 __write_1(h, o, v); 342 } 343 344 static void 345 beb_bus_space_write_2(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o, 346 uint16_t v) 347 { 348 349 __write_2(h, o, v); 350 } 351 352 static void 353 beb_bus_space_write_4(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o, 354 uint32_t v) 355 { 356 357 __write_4(h, o, v); 358 } 359 360 static void 361 beb_bus_space_write_8(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o, 362 uint64_t v) 363 { 364 365 __write_8(h, o, v); 366 } 367 368 /* 369 * void bus_space_read_multi_N(bus_space_tag_t tag, 370 * bus_space_handle_t bsh, bus_size_t offset, uintX_t *address, 371 * bus_size_t count); 372 * 373 * Read 'count' 1, 2, 4, or 8 byte values from the bus_space described by 374 * tag/handle at `offset' and store them in the address range starting at 375 * 'address'. The values are converted to CPU endian order before being 376 * being stored. 377 */ 378 static void 379 beb_bus_space_read_multi_1(bus_space_tag_t t, bus_space_handle_t h, 380 bus_size_t o, uint8_t *a, bus_size_t c) 381 { 382 383 for (; c; a++, c--) 384 *a = __read_1(h, o); 385 } 386 387 static void 388 beb_bus_space_read_multi_2(bus_space_tag_t t, bus_space_handle_t h, 389 bus_size_t o, uint16_t *a, bus_size_t c) 390 { 391 392 for (; c; a++, c--) 393 *a = __read_2(h, o); 394 } 395 396 static void 397 beb_bus_space_read_multi_4(bus_space_tag_t t, bus_space_handle_t h, 398 bus_size_t o, uint32_t *a, bus_size_t c) 399 { 400 401 for (; c; a++, c--) 402 *a = __read_4(h, o); 403 } 404 405 static void 406 beb_bus_space_read_multi_8(bus_space_tag_t t, bus_space_handle_t h, 407 bus_size_t o, uint64_t *a, bus_size_t c) 408 { 409 410 for (; c; a++, c--) 411 *a = __read_8(h, o); 412 } 413 414 /* 415 * void bus_space_write_multi_N(bus_space_tag_t tag, 416 * bus_space_handle_t bsh, bus_size_t offset, 417 * const uintX_t *address, bus_size_t count); 418 * 419 * Write 'count' 1, 2, 4, or 8 byte values from the address range starting 420 * at 'address' to the bus_space described by tag/handle at `offset'. 421 * The values are converted to bus endian order before being written to 422 * the bus. 423 */ 424 static void 425 beb_bus_space_write_multi_1(bus_space_tag_t t, bus_space_handle_t h, 426 bus_size_t o, const uint8_t *a, bus_size_t c) 427 { 428 429 for (; c; a++, c--) 430 __write_1(h, o, *a); 431 } 432 433 static void 434 beb_bus_space_write_multi_2(bus_space_tag_t t, bus_space_handle_t h, 435 bus_size_t o, const uint16_t *a, bus_size_t c) 436 { 437 438 for (; c; a++, c--) 439 __write_2(h, o, *a); 440 } 441 442 static void 443 beb_bus_space_write_multi_4(bus_space_tag_t t, bus_space_handle_t h, 444 bus_size_t o, const uint32_t *a, bus_size_t c) 445 { 446 447 for (; c; a++, c--) 448 __write_4(h, o, *a); 449 } 450 451 static void 452 beb_bus_space_write_multi_8(bus_space_tag_t t, bus_space_handle_t h, 453 bus_size_t o, const uint64_t *a, bus_size_t c) 454 { 455 456 for (; c; a++, c--) 457 __write_8(h, o, *a); 458 } 459 460 /* 461 * void bus_space_read_region_N(bus_space_tag_t tag, 462 * bus_space_handle_t bsh, bus_size_t offset, 463 * uintN_t *addr, bus_size_t count); 464 * 465 * Read `count' 1, 2, 4, or 8 byte quantities from bus space 466 * described by tag/handle and starting at `offset' and copy into 467 * buffer provided. 468 */ 469 static void 470 beb_bus_space_read_region_1(bus_space_tag_t t, bus_space_handle_t h, 471 bus_size_t o, uint8_t *a, bus_size_t c) 472 { 473 474 for (; c; a++, o++, c--) 475 *a = __read_1(h, o); 476 } 477 478 static void 479 beb_bus_space_read_region_2(bus_space_tag_t t, bus_space_handle_t h, 480 bus_size_t o, uint16_t *a, bus_size_t c) 481 { 482 483 for (; c; a++, o += 2, c--) 484 *a = __read_2(h, o); 485 } 486 487 static void 488 beb_bus_space_read_region_4(bus_space_tag_t t, bus_space_handle_t h, 489 bus_size_t o, uint32_t *a, bus_size_t c) 490 { 491 492 for (; c; a++, o += 4, c--) 493 *a = __read_4(h, o); 494 } 495 496 static void 497 beb_bus_space_read_region_8(bus_space_tag_t t, bus_space_handle_t h, 498 bus_size_t o, uint64_t *a, bus_size_t c) 499 { 500 501 for (; c; a++, o += 8, c--) 502 *a = __read_8(h, o); 503 } 504 505 /* 506 * void bus_space_write_region_N(bus_space_tag_t tag, 507 * bus_space_handle_t bsh, bus_size_t offset, 508 * uintN_t *addr, bus_size_t count); 509 * 510 * Copy `count' 1, 2, 4, or 8 byte quantities from the buffer provided 511 * into the bus space described by tag/handle and starting at `offset'. 512 */ 513 static void 514 beb_bus_space_write_region_1(bus_space_tag_t t, bus_space_handle_t h, 515 bus_size_t o, const uint8_t *a, bus_size_t c) 516 { 517 518 for (; c; a++, o++, c--) 519 __write_1(h, o, *a); 520 } 521 522 static void 523 beb_bus_space_write_region_2(bus_space_tag_t t, bus_space_handle_t h, 524 bus_size_t o, const uint16_t *a, bus_size_t c) 525 { 526 527 for (; c; a++, o += 2, c--) 528 __write_2(h, o, *a); 529 } 530 531 static void 532 beb_bus_space_write_region_4(bus_space_tag_t t, bus_space_handle_t h, 533 bus_size_t o, const uint32_t *a, bus_size_t c) 534 { 535 536 for (; c; a++, o += 4, c--) 537 __write_4(h, o, *a); 538 } 539 540 static void 541 beb_bus_space_write_region_8(bus_space_tag_t t, bus_space_handle_t h, 542 bus_size_t o, const uint64_t *a, bus_size_t c) 543 { 544 545 for (; c; a++, o += 8, c--) 546 __write_8(h, o, *a); 547 } 548 549 /* 550 * void bus_space_set_multi_N(bus_space_tag_t tag, 551 * bus_space_handle_t bsh, bus_size_t offset, uintN_t val, 552 * bus_size_t count); 553 * 554 * Write the 1, 2, 4, or 8 byte value `val' to bus space described 555 * by tag/handle/offset `count' times. 556 */ 557 558 static void 559 beb_bus_space_set_multi_1(bus_space_tag_t t, bus_space_handle_t h, 560 bus_size_t o, uint8_t v, bus_size_t c) 561 { 562 563 for (; c; c--) 564 __write_1(h, o, v); 565 } 566 567 static void 568 beb_bus_space_set_multi_2(bus_space_tag_t t, bus_space_handle_t h, 569 bus_size_t o, uint16_t v, bus_size_t c) 570 { 571 572 for (; c; c--) 573 __write_2(h, o, v); 574 } 575 576 static void 577 beb_bus_space_set_multi_4(bus_space_tag_t t, bus_space_handle_t h, 578 bus_size_t o, uint32_t v, bus_size_t c) 579 { 580 581 for (; c; c--) 582 __write_4(h, o, v); 583 } 584 585 static void 586 beb_bus_space_set_multi_8(bus_space_tag_t t, bus_space_handle_t h, 587 bus_size_t o, uint64_t v, bus_size_t c) 588 { 589 590 for (; c; c--) 591 __write_8(h, o, v); 592 } 593 594 /* 595 * void bus_space_set_region_N(bus_space_tag_t tag, 596 * bus_space_handle_t bsh, bus_size_t offset, uintN_t val, 597 * bus_size_t count); 598 * 599 * Write `count' 1, 2, 4, or 8 byte value `val' to bus space described 600 * by tag/handle starting at `offset'. 601 */ 602 static void 603 beb_bus_space_set_region_1(bus_space_tag_t t, bus_space_handle_t h, 604 bus_size_t o, uint8_t v, bus_size_t c) 605 { 606 607 for (; c; o++, c--) 608 __write_1(h, o, v); 609 } 610 611 static void 612 beb_bus_space_set_region_2(bus_space_tag_t t, bus_space_handle_t h, 613 bus_size_t o, uint16_t v, bus_size_t c) 614 { 615 616 for (; c; o += 2, c--) 617 __write_2(h, o, v); 618 } 619 620 static void 621 beb_bus_space_set_region_4(bus_space_tag_t t, bus_space_handle_t h, 622 bus_size_t o, uint32_t v, bus_size_t c) 623 { 624 625 for (; c; o += 4, c--) 626 __write_4(h, o, v); 627 } 628 629 static void 630 beb_bus_space_set_region_8(bus_space_tag_t t, bus_space_handle_t h, 631 bus_size_t o, uint64_t v, bus_size_t c) 632 { 633 634 for (; c; o += 8, c--) 635 __write_8(h, o, v); 636 } 637
Indexes created Sun Oct 25 00:26:45 UTC 2026