bus.h revision 1.10
1 /* $NetBSD: bus.h,v 1.10 2019/09/23 16:17:57 skrll Exp $ */ 2 3 /*- 4 * Copyright (c) 1996, 1997, 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /* 34 * Copyright (C) 1997 Scott Reynolds. All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 3. The name of the author may not be used to endorse or promote products 45 * derived from this software without specific prior written permission 46 * 47 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 48 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 49 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 50 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 51 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 52 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 53 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 54 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 55 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 56 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 57 */ 58 59 /* bus_space(9) functions for news68k. Just taken from hp300. */ 60 61 #ifndef _NEWS68K_BUS_H_ 62 #define _NEWS68K_BUS_H_ 63 64 /* 65 * Values for the news68k bus space tag, not to be used directly by MI code. 66 */ 67 #define NEWS68K_BUS_SPACE_INTIO 0 /* space is intio space */ 68 #define NEWS68K_BUS_SPACE_EIO 1 /* space is eio space */ 69 70 /* 71 * Bus address and size types 72 */ 73 typedef u_long bus_addr_t; 74 typedef u_long bus_size_t; 75 76 #define PRIxBUSADDR "lx" 77 #define PRIxBUSSIZE "lx" 78 #define PRIuBUSSIZE "lu" 79 80 /* 81 * Access methods for bus resources and address space. 82 */ 83 typedef int bus_space_tag_t; 84 typedef u_long bus_space_handle_t; 85 86 #define PRIxBSH "lx" 87 88 /* 89 * int bus_space_map(bus_space_tag_t t, bus_addr_t addr, 90 * bus_size_t size, int flags, bus_space_handle_t *bshp); 91 * 92 * Map a region of bus space. 93 */ 94 95 #define BUS_SPACE_MAP_CACHEABLE 0x01 96 #define BUS_SPACE_MAP_LINEAR 0x02 97 #define BUS_SPACE_MAP_PREFETCHABLE 0x04 98 99 int bus_space_map(bus_space_tag_t, bus_addr_t, bus_size_t, 100 int, bus_space_handle_t *); 101 102 /* 103 * void bus_space_unmap(bus_space_tag_t t, 104 * bus_space_handle_t bsh, bus_size_t size); 105 * 106 * Unmap a region of bus space. 107 */ 108 109 void bus_space_unmap(bus_space_tag_t, bus_space_handle_t, bus_size_t); 110 111 /* 112 * int bus_space_subregion(bus_space_tag_t t, 113 * bus_space_handle_t bsh, bus_size_t offset, bus_size_t size, 114 * bus_space_handle_t *nbshp); 115 * 116 * Get a new handle for a subregion of an already-mapped area of bus space. 117 */ 118 119 int bus_space_subregion(bus_space_tag_t t, bus_space_handle_t bsh, 120 bus_size_t offset, bus_size_t size, bus_space_handle_t *nbshp); 121 122 /* 123 * int bus_space_alloc(bus_space_tag_t t, bus_addr_t, rstart, 124 * bus_addr_t rend, bus_size_t size, bus_size_t align, 125 * bus_size_t boundary, int flags, bus_addr_t *addrp, 126 * bus_space_handle_t *bshp); 127 * 128 * Allocate a region of bus space. 129 */ 130 131 int bus_space_alloc(bus_space_tag_t t, bus_addr_t rstart, 132 bus_addr_t rend, bus_size_t size, bus_size_t align, 133 bus_size_t boundary, int cacheable, bus_addr_t *addrp, 134 bus_space_handle_t *bshp); 135 136 /* 137 * int bus_space_free(bus_space_tag_t t, 138 * bus_space_handle_t bsh, bus_size_t size); 139 * 140 * Free a region of bus space. 141 */ 142 143 void bus_space_free(bus_space_tag_t t, bus_space_handle_t bsh, 144 bus_size_t size); 145 146 /* 147 * int news68k_bus_space_probe(bus_space_tag_t t, 148 * bus_space_handle_t bsh, bus_size_t offset, int sz); 149 * 150 * Probe the bus at t/bsh/offset, using sz as the size of the load. 151 * 152 * This is a machine-dependent extension, and is not to be used by 153 * machine-independent code. 154 */ 155 156 int news68k_bus_space_probe(bus_space_tag_t t, 157 bus_space_handle_t bsh, bus_size_t offset, int sz); 158 159 /* 160 * uintN_t bus_space_read_N(bus_space_tag_t tag, 161 * bus_space_handle_t bsh, bus_size_t offset); 162 * 163 * Read a 1, 2, 4, or 8 byte quantity from bus space 164 * described by tag/handle/offset. 165 */ 166 167 #define bus_space_read_1(t, h, o) \ 168 ((void) t, (*(volatile uint8_t *)((h) + (o)))) 169 170 #define bus_space_read_2(t, h, o) \ 171 ((void) t, (*(volatile uint16_t *)((h) + (o)))) 172 173 #define bus_space_read_4(t, h, o) \ 174 ((void) t, (*(volatile uint32_t *)((h) + (o)))) 175 176 #if 0 /* Cause a link error for bus_space_read_8 */ 177 #define bus_space_read_8(t, h, o) !!! bus_space_read_8 unimplemented !!! 178 #endif 179 180 /* 181 * void bus_space_read_multi_N(bus_space_tag_t tag, 182 * bus_space_handle_t bsh, bus_size_t offset, 183 * uintN_t *addr, size_t count); 184 * 185 * Read `count' 1, 2, 4, or 8 byte quantities from bus space 186 * described by tag/handle/offset and copy into buffer provided. 187 */ 188 189 #define bus_space_read_multi_1(t, h, o, a, c) do { \ 190 (void) t; \ 191 __asm volatile (" \ 192 movl %0,%%a0 ; \ 193 movl %1,%%a1 ; \ 194 movl %2,%%d0 ; \ 195 1: movb %%a0@,%%a1@+ ; \ 196 subql #1,%%d0 ; \ 197 jne 1b" : \ 198 : \ 199 "r" ((h) + (o)), "g" (a), "g" (c) : \ 200 "%a0","%a1","%d0"); \ 201 } while (0) 202 203 #define bus_space_read_multi_2(t, h, o, a, c) do { \ 204 (void) t; \ 205 __asm volatile (" \ 206 movl %0,%%a0 ; \ 207 movl %1,%%a1 ; \ 208 movl %2,%%d0 ; \ 209 1: movw %%a0@,%%a1@+ ; \ 210 subql #1,%%d0 ; \ 211 jne 1b" : \ 212 : \ 213 "r" ((h) + (o)), "g" (a), "g" (c) : \ 214 "%a0","%a1","%d0"); \ 215 } while (0) 216 217 #define bus_space_read_multi_4(t, h, o, a, c) do { \ 218 (void) t; \ 219 __asm volatile (" \ 220 movl %0,%%a0 ; \ 221 movl %1,%%a1 ; \ 222 movl %2,%%d0 ; \ 223 1: movl %%a0@,%%a1@+ ; \ 224 subql #1,%%d0 ; \ 225 jne 1b" : \ 226 : \ 227 "r" ((h) + (o)), "g" (a), "g" (c) : \ 228 "%a0","%a1","%d0"); \ 229 } while (0) 230 231 #if 0 /* Cause a link error for bus_space_read_multi_8 */ 232 #define bus_space_read_multi_8 !!! bus_space_read_multi_8 unimplemented !!! 233 #endif 234 235 /* 236 * void bus_space_read_region_N(bus_space_tag_t tag, 237 * bus_space_handle_t bsh, bus_size_t offset, 238 * uintN_t *addr, size_t count); 239 * 240 * Read `count' 1, 2, 4, or 8 byte quantities from bus space 241 * described by tag/handle and starting at `offset' and copy into 242 * buffer provided. 243 */ 244 245 #define bus_space_read_region_1(t, h, o, a, c) do { \ 246 (void) t; \ 247 __asm volatile (" \ 248 movl %0,%%a0 ; \ 249 movl %1,%%a1 ; \ 250 movl %2,%%d0 ; \ 251 1: movb %%a0@+,%%a1@+ ; \ 252 subql #1,%%d0 ; \ 253 jne 1b" : \ 254 : \ 255 "r" ((h) + (o)), "g" (a), "g" (c) : \ 256 "%a0","%a1","%d0"); \ 257 } while (0) 258 259 #define bus_space_read_region_2(t, h, o, a, c) do { \ 260 (void) t; \ 261 __asm volatile (" \ 262 movl %0,%%a0 ; \ 263 movl %1,%%a1 ; \ 264 movl %2,%%d0 ; \ 265 1: movw %%a0@+,%%a1@+ ; \ 266 subql #1,%%d0 ; \ 267 jne 1b" : \ 268 : \ 269 "r" ((h) + (o)), "g" (a), "g" (c) : \ 270 "%a0","%a1","%d0"); \ 271 } while (0) 272 273 #define bus_space_read_region_4(t, h, o, a, c) do { \ 274 (void) t; \ 275 __asm volatile (" \ 276 movl %0,%%a0 ; \ 277 movl %1,%%a1 ; \ 278 movl %2,%%d0 ; \ 279 1: movl %%a0@+,%%a1@+ ; \ 280 subql #1,%%d0 ; \ 281 jne 1b" : \ 282 : \ 283 "r" ((h) + (o)), "g" (a), "g" (c) : \ 284 "%a0","%a1","%d0"); \ 285 } while (0) 286 287 #if 0 /* Cause a link error for bus_space_read_region_8 */ 288 #define bus_space_read_region_8 !!! bus_space_read_region_8 unimplemented !!! 289 #endif 290 291 /* 292 * void bus_space_write_N(bus_space_tag_t tag, 293 * bus_space_handle_t bsh, bus_size_t offset, 294 * uintN_t value); 295 * 296 * Write the 1, 2, 4, or 8 byte value `value' to bus space 297 * described by tag/handle/offset. 298 */ 299 300 #define bus_space_write_1(t, h, o, v) \ 301 ((void) t, ((void)(*(volatile uint8_t *)((h) + (o)) = (v)))) 302 303 #define bus_space_write_2(t, h, o, v) \ 304 ((void) t, ((void)(*(volatile uint16_t *)((h) + (o)) = (v)))) 305 306 #define bus_space_write_4(t, h, o, v) \ 307 ((void) t, ((void)(*(volatile uint32_t *)((h) + (o)) = (v)))) 308 309 #if 0 /* Cause a link error for bus_space_write_8 */ 310 #define bus_space_write_8 !!! bus_space_write_8 not implemented !!! 311 #endif 312 313 /* 314 * void bus_space_write_multi_N(bus_space_tag_t tag, 315 * bus_space_handle_t bsh, bus_size_t offset, 316 * const uintN_t *addr, size_t count); 317 * 318 * Write `count' 1, 2, 4, or 8 byte quantities from the buffer 319 * provided to bus space described by tag/handle/offset. 320 */ 321 322 #define bus_space_write_multi_1(t, h, o, a, c) do { \ 323 (void) t; \ 324 __asm volatile (" \ 325 movl %0,%%a0 ; \ 326 movl %1,%%a1 ; \ 327 movl %2,%%d0 ; \ 328 1: movb %%a1@+,%%a0@ ; \ 329 subql #1,%%d0 ; \ 330 jne 1b" : \ 331 : \ 332 "r" ((h) + (o)), "g" (a), "g" (c) : \ 333 "%a0","%a1","%d0"); \ 334 } while (0) 335 336 #define bus_space_write_multi_2(t, h, o, a, c) do { \ 337 (void) t; \ 338 __asm volatile (" \ 339 movl %0,%%a0 ; \ 340 movl %1,%%a1 ; \ 341 movl %2,%%d0 ; \ 342 1: movw %%a1@+,%%a0@ ; \ 343 subql #1,%%d0 ; \ 344 jne 1b" : \ 345 : \ 346 "r" ((h) + (o)), "g" (a), "g" (c) : \ 347 "%a0","%a1","%d0"); \ 348 } while (0) 349 350 #define bus_space_write_multi_4(t, h, o, a, c) do { \ 351 (void) t; \ 352 __asm volatile (" \ 353 movl %0,%%a0 ; \ 354 movl %1,%%a1 ; \ 355 movl %2,%%d0 ; \ 356 1: movl %%a1@+,%%a0@ ; \ 357 subql #1,%%d0 ; \ 358 jne 1b" : \ 359 : \ 360 "r" ((h) + (o)), "g" (a), "g" (c) : \ 361 "%a0","%a1","%d0"); \ 362 } while (0) 363 364 #if 0 /* Cause a link error for bus_space_write_8 */ 365 #define bus_space_write_multi_8(t, h, o, a, c) \ 366 !!! bus_space_write_multi_8 unimplimented !!! 367 #endif 368 369 /* 370 * void bus_space_write_region_N(bus_space_tag_t tag, 371 * bus_space_handle_t bsh, bus_size_t offset, 372 * const uintN_t *addr, size_t count); 373 * 374 * Write `count' 1, 2, 4, or 8 byte quantities from the buffer provided 375 * to bus space described by tag/handle starting at `offset'. 376 */ 377 378 #define bus_space_write_region_1(t, h, o, a, c) do { \ 379 (void) t; \ 380 __asm volatile (" \ 381 movl %0,%%a0 ; \ 382 movl %1,%%a1 ; \ 383 movl %2,%%d0 ; \ 384 1: movb %%a1@+,%%a0@+ ; \ 385 subql #1,%%d0 ; \ 386 jne 1b" : \ 387 : \ 388 "r" ((h) + (o)), "g" (a), "g" (c) : \ 389 "%a0","%a1","%d0"); \ 390 } while (0) 391 392 #define bus_space_write_region_2(t, h, o, a, c) do { \ 393 (void) t; \ 394 __asm volatile (" \ 395 movl %0,%%a0 ; \ 396 movl %1,%%a1 ; \ 397 movl %2,%%d0 ; \ 398 1: movw %%a1@+,%%a0@+ ; \ 399 subql #1,%%d0 ; \ 400 jne 1b" : \ 401 : \ 402 "r" ((h) + (o)), "g" (a), "g" (c) : \ 403 "%a0","%a1","%d0"); \ 404 } while (0) 405 406 #define bus_space_write_region_4(t, h, o, a, c) do { \ 407 (void) t; \ 408 __asm volatile (" \ 409 movl %0,%%a0 ; \ 410 movl %1,%%a1 ; \ 411 movl %2,%%d0 ; \ 412 1: movl %%a1@+,%%a0@+ ; \ 413 subql #1,%%d0 ; \ 414 jne 1b" : \ 415 : \ 416 "r" ((h) + (o)), "g" (a), "g" (c) : \ 417 "%a0","%a1","%d0"); \ 418 } while (0) 419 420 #if 0 /* Cause a link error for bus_space_write_region_8 */ 421 #define bus_space_write_region_8 \ 422 !!! bus_space_write_region_8 unimplemented !!! 423 #endif 424 425 /* 426 * void bus_space_set_multi_N(bus_space_tag_t tag, 427 * bus_space_handle_t bsh, bus_size_t offset, uintN_t val, 428 * size_t count); 429 * 430 * Write the 1, 2, 4, or 8 byte value `val' to bus space described 431 * by tag/handle/offset `count' times. 432 */ 433 434 #define bus_space_set_multi_1(t, h, o, val, c) do { \ 435 (void) t; \ 436 __asm volatile (" \ 437 movl %0,%%a0 ; \ 438 movl %1,%%d1 ; \ 439 movl %2,%%d0 ; \ 440 1: movb %%d1,%%a0@ ; \ 441 subql #1,%%d0 ; \ 442 jne 1b" : \ 443 : \ 444 "r" ((h) + (o)), "g" (val), "g" (c) : \ 445 "%a0","%d0","%d1"); \ 446 } while (0) 447 448 #define bus_space_set_multi_2(t, h, o, val, c) do { \ 449 (void) t; \ 450 __asm volatile (" \ 451 movl %0,%%a0 ; \ 452 movl %1,%%d1 ; \ 453 movl %2,%%d0 ; \ 454 1: movw %%d1,%%a0@ ; \ 455 subql #1,%%d0 ; \ 456 jne 1b" : \ 457 : \ 458 "r" ((h) + (o)), "g" (val), "g" (c) : \ 459 "%a0","%d0","%d1"); \ 460 } while (0) 461 462 #define bus_space_set_multi_4(t, h, o, val, c) do { \ 463 (void) t; \ 464 __asm volatile (" \ 465 movl %0,%%a0 ; \ 466 movl %1,%%d1 ; \ 467 movl %2,%%d0 ; \ 468 1: movl %%d1,%%a0@ ; \ 469 subql #1,%%d0 ; \ 470 jne 1b" : \ 471 : \ 472 "r" ((h) + (o)), "g" (val), "g" (c) : \ 473 "%a0","%d0","%d1"); \ 474 } while (0) 475 476 #if 0 /* Cause a link error for bus_space_set_multi_8 */ 477 #define bus_space_set_multi_8 \ 478 !!! bus_space_set_multi_8 unimplemented !!! 479 #endif 480 481 /* 482 * void bus_space_set_region_N(bus_space_tag_t tag, 483 * bus_space_handle_t bsh, bus_size_t offset, uintN_t val, 484 * size_t count); 485 * 486 * Write `count' 1, 2, 4, or 8 byte value `val' to bus space described 487 * by tag/handle starting at `offset'. 488 */ 489 490 #define bus_space_set_region_1(t, h, o, val, c) do { \ 491 (void) t; \ 492 __asm volatile (" \ 493 movl %0,%%a0 ; \ 494 movl %1,%%d1 ; \ 495 movl %2,%%d0 ; \ 496 1: movb %%d1,%%a0@+ ; \ 497 subql #1,%%d0 ; \ 498 jne 1b" : \ 499 : \ 500 "r" ((h) + (o)), "g" (val), "g" (c) : \ 501 "%a0","%d0","%d1"); \ 502 } while (0) 503 504 #define bus_space_set_region_2(t, h, o, val, c) do { \ 505 (void) t; \ 506 __asm volatile (" \ 507 movl %0,%%a0 ; \ 508 movl %1,%%d1 ; \ 509 movl %2,%%d0 ; \ 510 1: movw %%d1,%%a0@+ ; \ 511 subql #1,%%d0 ; \ 512 jne 1b" : \ 513 : \ 514 "r" ((h) + (o)), "g" (val), "g" (c) : \ 515 "%a0","%d0","%d1"); \ 516 } while (0) 517 518 #define bus_space_set_region_4(t, h, o, val, c) do { \ 519 (void) t; \ 520 __asm volatile (" \ 521 movl %0,%%a0 ; \ 522 movl %1,%%d1 ; \ 523 movl %2,%%d0 ; \ 524 1: movl %%d1,%%a0@+ ; \ 525 subql #1,%%d0 ; \ 526 jne 1b" : \ 527 : \ 528 "r" ((h) + (o)), "g" (val), "g" (c) : \ 529 "%a0","%d0","%d1"); \ 530 } while (0) 531 532 #if 0 /* Cause a link error for bus_space_set_region_8 */ 533 #define bus_space_set_region_8 \ 534 !!! bus_space_set_region_8 unimplemented !!! 535 #endif 536 537 /* 538 * void bus_space_copy_region_N(bus_space_tag_t tag, 539 * bus_space_handle_t bsh1, bus_size_t off1, 540 * bus_space_handle_t bsh2, bus_size_t off2, 541 * bus_size_t count); 542 * 543 * Copy `count' 1, 2, 4, or 8 byte values from bus space starting 544 * at tag/bsh1/off1 to bus space starting at tag/bsh2/off2. 545 */ 546 547 #define __NEWS68K_copy_region_N(BYTES) \ 548 static __inline void __CONCAT(bus_space_copy_region_,BYTES) \ 549 (bus_space_tag_t, \ 550 bus_space_handle_t bsh1, bus_size_t off1, \ 551 bus_space_handle_t bsh2, bus_size_t off2, \ 552 bus_size_t count); \ 553 \ 554 static __inline void \ 555 __CONCAT(bus_space_copy_region_,BYTES)(bus_space_tag_t t, \ 556 bus_space_handle_t h1, bus_space_handle_t h2, \ 557 bus_size_t o1, bus_size_t o2, bus_size_t c) \ 558 { \ 559 bus_size_t o; \ 560 \ 561 if ((h1 + o1) >= (h2 + o2)) { \ 562 /* src after dest: copy forward */ \ 563 for (o = 0; c != 0; c--, o += BYTES) \ 564 __CONCAT(bus_space_write_,BYTES)(t, h2, o2 + o, \ 565 __CONCAT(bus_space_read_,BYTES)(t, h1, o1 + o)); \ 566 } else { \ 567 /* dest after src: copy backwards */ \ 568 for (o = (c - 1) * BYTES; c != 0; c--, o -= BYTES) \ 569 __CONCAT(bus_space_write_,BYTES)(t, h2, o2 + o, \ 570 __CONCAT(bus_space_read_,BYTES)(t, h1, o1 + o)); \ 571 } \ 572 } 573 __NEWS68K_copy_region_N(1) 574 __NEWS68K_copy_region_N(2) 575 __NEWS68K_copy_region_N(4) 576 #if 0 /* Cause a link error for bus_space_copy_region_8 */ 577 #define bus_space_copy_region_8 \ 578 !!! bus_space_copy_region_8 unimplemented !!! 579 #endif 580 581 #undef __NEWS68K_copy_region_N 582 583 /* 584 * Bus read/write barrier methods. 585 * 586 * void bus_space_barrier(bus_space_tag_t tag, 587 * bus_space_handle_t bsh, bus_size_t offset, 588 * bus_size_t len, int flags); 589 * 590 * Note: the 680x0 does not currently require barriers, but we must 591 * provide the flags to MI code. 592 */ 593 #define bus_space_barrier(t, h, o, l, f) \ 594 ((void)((void)(t), (void)(h), (void)(o), (void)(l), (void)(f))) 595 #define BUS_SPACE_BARRIER_READ 0x01 /* force read barrier */ 596 #define BUS_SPACE_BARRIER_WRITE 0x02 /* force write barrier */ 597 598 #define BUS_SPACE_ALIGNED_POINTER(p, t) ALIGNED_POINTER(p, t) 599 600 /* 601 * There is no bus_dma(9)'fied bus drivers on this port. 602 */ 603 #define __HAVE_NO_BUS_DMA 604 605 #endif /* _NEWS68K_BUS_H_ */ 606
Indexes created Tue Sep 30 11:09:46 GMT 2025