1 /* $NetBSD: bus_space.h,v 1.18 2023/01/27 20:03:02 tsutsui 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 /* 60 * Lifted from the Next68k port. 61 * Modified for mvme68k by Steve Woodford. 62 * 63 * TODO: Support for VMEbus... 64 * (Do any existing VME card drivers use bus_space_* ?) 65 */ 66 67 #ifndef _MVME68K_BUS_SPACE_H_ 68 #define _MVME68K_BUS_SPACE_H_ 69 70 /* 71 * Addresses (in bus space). 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 struct mvme68k_bus_space_tag; 84 typedef struct mvme68k_bus_space_tag *bus_space_tag_t; 85 typedef u_long bus_space_handle_t; 86 87 #define PRIxBSH "lx" 88 89 struct mvme68k_bus_space_tag { 90 void *bs_cookie; 91 int (*bs_map)(void *, bus_addr_t, bus_size_t, 92 int, bus_space_handle_t *); 93 void (*bs_unmap)(void *, bus_space_handle_t, bus_size_t); 94 int (*bs_peek_1)(void *, bus_space_handle_t, 95 bus_size_t, uint8_t *); 96 int (*bs_peek_2)(void *, bus_space_handle_t, 97 bus_size_t, uint16_t *); 98 int (*bs_peek_4)(void *, bus_space_handle_t, 99 bus_size_t, uint32_t *); 100 #if 0 101 int (*bs_peek_8)(void *, bus_space_handle_t, 102 bus_size_t, uint64_t *); 103 #endif 104 int (*bs_poke_1)(void *, bus_space_handle_t, 105 bus_size_t, uint8_t); 106 int (*bs_poke_2)(void *, bus_space_handle_t, 107 bus_size_t, uint16_t); 108 int (*bs_poke_4)(void *, bus_space_handle_t, 109 bus_size_t, uint32_t); 110 #if 0 111 int (*bs_poke_8)(void *, bus_space_handle_t, 112 bus_size_t, uint64_t); 113 #endif 114 }; 115 116 /* 117 * int bus_space_map(bus_space_tag_t t, bus_addr_t addr, 118 * bus_size_t size, int flags, 119 * bus_space_handle_t *bshp); 120 * 121 * Map a region of bus space. 122 */ 123 #define bus_space_map(tag, offset, size, flags, handlep) \ 124 (*((tag)->bs_map))((tag)->bs_cookie, (offset), (size), (flags), (handlep)) 125 126 /* 127 * Possible values for the 'flags' parameter of bus_space_map() 128 */ 129 #define BUS_SPACE_MAP_CACHEABLE 0x01 130 #define BUS_SPACE_MAP_LINEAR 0x02 131 #define BUS_SPACE_MAP_PREFETCHABLE 0x04 132 133 /* 134 * void bus_space_unmap(bus_space_tag_t t, 135 * bus_space_handle_t bsh, bus_size_t size); 136 * 137 * Unmap a region of bus space. 138 */ 139 #define bus_space_unmap(tag, handle, size) \ 140 (*((tag)->bs_unmap))((tag)->bs_cookie, (handle), (size)) 141 142 /* 143 * int bus_space_subregion(bus_space_tag_t t, bus_space_handle_t h 144 * bus_addr_t offset, bus_size_t size, bus_space_handle_t *newh); 145 * 146 * Allocate a sub-region of an existing map 147 */ 148 #define bus_space_subregion(t, h, o, s, hp) \ 149 ((*(hp)=(h)+(o)), 0) 150 151 /* 152 * Allocation and deallocation operations. 153 */ 154 #define bus_space_alloc(t, rs, re, s, a, b, f, ap, hp) \ 155 (-1) 156 157 #define bus_space_free(t, h, s) 158 159 /* 160 * int bus_space_peek_N(bus_space_tag_t tag, 161 * bus_space_handle_t bsh, bus_size_t offset, uintN_t *valuep); 162 * 163 * Cautiously read 1, 2, 4 or 8 byte quantity from bus space described 164 * by tag/handle/offset. 165 * If no hardware responds to the read access, the function returns a 166 * non-zero value. Otherwise the value read is placed in `valuep'. 167 */ 168 #define bus_space_peek_1(t, h, o, vp) \ 169 (*((t)->bs_peek_1))((t)->bs_cookie, (h), (o), (vp)) 170 171 #define bus_space_peek_2(t, h, o, vp) \ 172 (*((t)->bs_peek_2))((t)->bs_cookie, (h), (o), (vp)) 173 174 #define bus_space_peek_4(t, h, o, vp) \ 175 (*((t)->bs_peek_4))((t)->bs_cookie, (h), (o), (vp)) 176 177 /* 178 * int bus_space_poke_N(bus_space_tag_t tag, 179 * bus_space_handle_t bsh, bus_size_t offset, uintN_t value); 180 * 181 * Cautiously write 1, 2, 4 or 8 byte quantity to bus space described 182 * by tag/handle/offset. 183 * If no hardware responds to the write access, the function returns a 184 * non-zero value. 185 */ 186 #define bus_space_poke_1(t, h, o, v) \ 187 (*((t)->bs_poke_1))((t)->bs_cookie, (h), (o), (v)) 188 189 #define bus_space_poke_2(t, h, o, v) \ 190 (*((t)->bs_poke_2))((t)->bs_cookie, (h), (o), (v)) 191 192 #define bus_space_poke_4(t, h, o, v) \ 193 (*((t)->bs_poke_4))((t)->bs_cookie, (h), (o), (v)) 194 195 /* 196 * uintN_t bus_space_read_N(bus_space_tag_t tag, 197 * bus_space_handle_t bsh, bus_size_t offset); 198 * 199 * Read a 1, 2, 4, or 8 byte quantity from bus space 200 * described by tag/handle/offset. 201 */ 202 #define bus_space_read_1(t,h,o) \ 203 (*((volatile uint8_t *)(intptr_t)((h) + (o)))) 204 #define bus_space_read_2(t,h,o) \ 205 (*((volatile uint16_t *)(intptr_t)((h) + (o)))) 206 #define bus_space_read_4(t,h,o) \ 207 (*((volatile uint32_t *)(intptr_t)((h) + (o)))) 208 209 /* 210 * void bus_space_read_multi_N(bus_space_tag_t tag, 211 * bus_space_handle_t bsh, bus_size_t offset, 212 * uintN_t *addr, size_t count); 213 * 214 * Read `count' 1, 2, 4, or 8 byte quantities from bus space 215 * described by tag/handle/offset and copy into buffer provided. 216 */ 217 218 #define bus_space_read_multi_1(t, h, o, a, c) do { \ 219 (void) t; \ 220 __asm volatile (" \ 221 movl %0,%%a0 ; \ 222 movl %1,%%a1 ; \ 223 movl %2,%%d0 ; \ 224 1: movb %%a0@,%%a1@+ ; \ 225 subql #1,%%d0 ; \ 226 jne 1b" : \ 227 : \ 228 "r" ((h) + (o)), "g" (a), "g" (c) : \ 229 "a0","a1","d0","memory"); \ 230 } while (0); 231 232 #define bus_space_read_multi_2(t, h, o, a, c) do { \ 233 (void) t; \ 234 __asm volatile (" \ 235 movl %0,%%a0 ; \ 236 movl %1,%%a1 ; \ 237 movl %2,%%d0 ; \ 238 1: movw %%a0@,%%a1@+ ; \ 239 subql #1,%%d0 ; \ 240 jne 1b" : \ 241 : \ 242 "r" ((h) + (o)), "g" (a), "g" (c) : \ 243 "a0","a1","d0","memory"); \ 244 } while (0); 245 246 #define bus_space_read_multi_4(t, h, o, a, c) do { \ 247 (void) t; \ 248 __asm volatile (" \ 249 movl %0,%%a0 ; \ 250 movl %1,%%a1 ; \ 251 movl %2,%%d0 ; \ 252 1: movl %%a0@,%%a1@+ ; \ 253 subql #1,%%d0 ; \ 254 jne 1b" : \ 255 : \ 256 "r" ((h) + (o)), "g" (a), "g" (c) : \ 257 "a0","a1","d0","memory"); \ 258 } while (0); 259 260 /* 261 * void bus_space_read_region_N(bus_space_tag_t tag, 262 * bus_space_handle_t bsh, bus_size_t offset, 263 * uintN_t *addr, size_t count); 264 * 265 * Read `count' 1, 2, 4, or 8 byte quantities from bus space 266 * described by tag/handle and starting at `offset' and copy into 267 * buffer provided. 268 */ 269 270 #define bus_space_read_region_1(t, h, o, a, c) do { \ 271 (void) t; \ 272 __asm volatile (" \ 273 movl %0,%%a0 ; \ 274 movl %1,%%a1 ; \ 275 movl %2,%%d0 ; \ 276 1: movb %%a0@+,%%a1@+ ; \ 277 subql #1,%%d0 ; \ 278 jne 1b" : \ 279 : \ 280 "r" ((h) + (o)), "g" (a), "g" (c) : \ 281 "a0","a1","d0","memory"); \ 282 } while (0); 283 284 #define bus_space_read_region_2(t, h, o, a, c) do { \ 285 (void) t; \ 286 __asm volatile (" \ 287 movl %0,%%a0 ; \ 288 movl %1,%%a1 ; \ 289 movl %2,%%d0 ; \ 290 1: movw %%a0@+,%%a1@+ ; \ 291 subql #1,%%d0 ; \ 292 jne 1b" : \ 293 : \ 294 "r" ((h) + (o)), "g" (a), "g" (c) : \ 295 "a0","a1","d0","memory"); \ 296 } while (0); 297 298 #define bus_space_read_region_4(t, h, o, a, c) do { \ 299 (void) t; \ 300 __asm volatile (" \ 301 movl %0,%%a0 ; \ 302 movl %1,%%a1 ; \ 303 movl %2,%%d0 ; \ 304 1: movl %%a0@+,%%a1@+ ; \ 305 subql #1,%%d0 ; \ 306 jne 1b" : \ 307 : \ 308 "r" ((h) + (o)), "g" (a), "g" (c) : \ 309 "a0","a1","d0","memory"); \ 310 } while (0); 311 312 /* 313 * void bus_space_write_N(bus_space_tag_t tag, 314 * bus_space_handle_t bsh, bus_size_t offset, 315 * uintN_t value); 316 * 317 * Write the 1, 2, 4, or 8 byte value `value' to bus space 318 * described by tag/handle/offset. 319 */ 320 #define bus_space_write_1(t,h,o,v) \ 321 do { \ 322 *((volatile uint8_t *)(intptr_t)((h) + (o))) = (v); \ 323 } while (/*CONSTCOND*/0) 324 #define bus_space_write_2(t,h,o,v) \ 325 do { \ 326 *((volatile uint16_t *)(intptr_t)((h) + (o))) = (v); \ 327 } while (/*CONSTCOND*/0) 328 #define bus_space_write_4(t,h,o,v) \ 329 do { \ 330 *((volatile uint32_t *)(intptr_t)((h) + (o))) = (v); \ 331 } while (/*CONSTCOND*/0) 332 333 /* 334 * void bus_space_write_multi_N(bus_space_tag_t tag, 335 * bus_space_handle_t bsh, bus_size_t offset, 336 * const uintN_t *addr, size_t count); 337 * 338 * Write `count' 1, 2, 4, or 8 byte quantities from the buffer 339 * provided to bus space described by tag/handle/offset. 340 */ 341 342 #define bus_space_write_multi_1(t, h, o, a, c) do { \ 343 (void) t; \ 344 __asm volatile (" \ 345 movl %0,%%a0 ; \ 346 movl %1,%%a1 ; \ 347 movl %2,%%d0 ; \ 348 1: movb %%a1@+,%%a0@ ; \ 349 subql #1,%%d0 ; \ 350 jne 1b" : \ 351 : \ 352 "r" ((h) + (o)), "g" (a), "g" (c) : \ 353 "a0","a1","d0"); \ 354 } while (0); 355 356 #define bus_space_write_multi_2(t, h, o, a, c) do { \ 357 (void) t; \ 358 __asm volatile (" \ 359 movl %0,%%a0 ; \ 360 movl %1,%%a1 ; \ 361 movl %2,%%d0 ; \ 362 1: movw %%a1@+,%%a0@ ; \ 363 subql #1,%%d0 ; \ 364 jne 1b" : \ 365 : \ 366 "r" ((h) + (o)), "g" (a), "g" (c) : \ 367 "a0","a1","d0"); \ 368 } while (0); 369 370 #define bus_space_write_multi_4(t, h, o, a, c) do { \ 371 (void) t; \ 372 __asm volatile (" \ 373 movl %0,%%a0 ; \ 374 movl %1,%%a1 ; \ 375 movl %2,%%d0 ; \ 376 1: movl a1@+,%%a0@ ; \ 377 subql #1,%%d0 ; \ 378 jne 1b" : \ 379 : \ 380 "r" ((h) + (o)), "g" (a), "g" (c) : \ 381 "a0","a1","d0"); \ 382 } while (0); 383 384 /* 385 * void bus_space_write_region_N(bus_space_tag_t tag, 386 * bus_space_handle_t bsh, bus_size_t offset, 387 * const uintN_t *addr, size_t count); 388 * 389 * Write `count' 1, 2, 4, or 8 byte quantities from the buffer provided 390 * to bus space described by tag/handle starting at `offset'. 391 */ 392 393 #define bus_space_write_region_1(t, h, o, a, c) do { \ 394 (void) t; \ 395 __asm volatile (" \ 396 movl %0,%%a0 ; \ 397 movl %1,%%a1 ; \ 398 movl %2,%%d0 ; \ 399 1: movb %%a1@+,%%a0@+ ; \ 400 subql #1,%%d0 ; \ 401 jne 1b" : \ 402 : \ 403 "r" ((h) + (o)), "g" (a), "g" (c) : \ 404 "a0","a1","d0"); \ 405 } while (0); 406 407 #define bus_space_write_region_2(t, h, o, a, c) do { \ 408 (void) t; \ 409 __asm volatile (" \ 410 movl %0,%%a0 ; \ 411 movl %1,%%a1 ; \ 412 movl %2,%%d0 ; \ 413 1: movw %%a1@+,%%a0@+ ; \ 414 subql #1,%%d0 ; \ 415 jne 1b" : \ 416 : \ 417 "r" ((h) + (o)), "g" (a), "g" (c) : \ 418 "a0","a1","d0"); \ 419 } while (0); 420 421 #define bus_space_write_region_4(t, h, o, a, c) do { \ 422 (void) t; \ 423 __asm volatile (" \ 424 movl %0,%%a0 ; \ 425 movl %1,%%a1 ; \ 426 movl %2,%%d0 ; \ 427 1: movl %%a1@+,%%a0@+ ; \ 428 subql #1,%%d0 ; \ 429 jne 1b" : \ 430 : \ 431 "r" ((h) + (o)), "g" (a), "g" (c) : \ 432 "a0","a1","d0"); \ 433 } while (0); 434 435 /* 436 * void bus_space_set_multi_N(bus_space_tag_t tag, 437 * bus_space_handle_t bsh, bus_size_t offset, uintN_t val, 438 * size_t count); 439 * 440 * Write the 1, 2, 4, or 8 byte value `val' to bus space described 441 * by tag/handle/offset `count' times. 442 */ 443 444 #define bus_space_set_multi_1(t, h, o, val, c) do { \ 445 (void) t; \ 446 __asm volatile (" \ 447 movl %0,%%a0 ; \ 448 movl %1,%%d1 ; \ 449 movl %2,%%d0 ; \ 450 1: movb %%d1,%%a0@ ; \ 451 subql #1,%%d0 ; \ 452 jne 1b" : \ 453 : \ 454 "r" ((h) + (o)), "g" (val), "g" (c) : \ 455 "a0","d0","d1"); \ 456 } while (0); 457 458 #define bus_space_set_multi_2(t, h, o, val, c) do { \ 459 (void) t; \ 460 __asm volatile (" \ 461 movl %0,%%a0 ; \ 462 movl %1,%%d1 ; \ 463 movl %2,%%d0 ; \ 464 1: movw %%d1,%%a0@ ; \ 465 subql #1,%%d0 ; \ 466 jne 1b" : \ 467 : \ 468 "r" ((h) + (o)), "g" (val), "g" (c) : \ 469 "a0","d0","d1"); \ 470 } while (0); 471 472 #define bus_space_set_multi_4(t, h, o, val, c) do { \ 473 (void) t; \ 474 __asm volatile (" \ 475 movl %0,%%a0 ; \ 476 movl %1,%%d1 ; \ 477 movl %2,%%d0 ; \ 478 1: movl %%d1,%%a0@ ; \ 479 subql #1,%%d0 ; \ 480 jne 1b" : \ 481 : \ 482 "r" ((h) + (o)), "g" (val), "g" (c) : \ 483 "a0","d0","d1"); \ 484 } while (0); 485 486 /* 487 * void bus_space_set_region_N(bus_space_tag_t tag, 488 * bus_space_handle_t bsh, bus_size_t offset, uintN_t val, 489 * size_t count); 490 * 491 * Write `count' 1, 2, 4, or 8 byte value `val' to bus space described 492 * by tag/handle starting at `offset'. 493 */ 494 495 #define bus_space_set_region_1(t, h, o, val, c) do { \ 496 (void) t; \ 497 __asm volatile (" \ 498 movl %0,%%a0 ; \ 499 movl %1,%%d1 ; \ 500 movl %2,%%d0 ; \ 501 1: movb %%d1,%%a0@+ ; \ 502 subql #1,%%d0 ; \ 503 jne 1b" : \ 504 : \ 505 "r" ((h) + (o)), "g" (val), "g" (c) : \ 506 "a0","d0","d1"); \ 507 } while (0); 508 509 #define bus_space_set_region_2(t, h, o, val, c) do { \ 510 (void) t; \ 511 __asm volatile (" \ 512 movl %0,%%a0 ; \ 513 movl %1,%%d1 ; \ 514 movl %2,%%d0 ; \ 515 1: movw %%d1,%%a0@+ ; \ 516 subql #1,%%d0 ; \ 517 jne 1b" : \ 518 : \ 519 "r" ((h) + (o)), "g" (val), "g" (c) : \ 520 "a0","d0","d1"); \ 521 } while (0); 522 523 #define bus_space_set_region_4(t, h, o, val, c) do { \ 524 (void) t; \ 525 __asm volatile (" \ 526 movl %0,%%a0 ; \ 527 movl %1,%%d1 ; \ 528 movl %2,%%d0 ; \ 529 1: movl d1,%%a0@+ ; \ 530 subql #1,%%d0 ; \ 531 jne 1b" : \ 532 : \ 533 "r" ((h) + (o)), "g" (val), "g" (c) : \ 534 "a0","d0","d1"); \ 535 } while (0); 536 537 /* 538 * void bus_space_copy_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 * 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 __MVME68K_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)( \ 556 bus_space_tag_t t, \ 557 bus_space_handle_t h1, \ 558 bus_size_t o1, \ 559 bus_space_handle_t h2, \ 560 bus_size_t o2, \ 561 bus_size_t c) \ 562 { \ 563 bus_size_t o; \ 564 \ 565 if ((h1 + o1) >= (h2 + o2)) { \ 566 /* src after dest: copy forward */ \ 567 for (o = 0; c != 0; c--, o += BYTES) \ 568 __CONCAT(bus_space_write_,BYTES)(t, h2, o2 + o, \ 569 __CONCAT(bus_space_read_,BYTES)(t, h1, o1 + o)); \ 570 } else { \ 571 /* dest after src: copy backwards */ \ 572 for (o = (c - 1) * BYTES; c != 0; c--, o -= BYTES) \ 573 __CONCAT(bus_space_write_,BYTES)(t, h2, o2 + o, \ 574 __CONCAT(bus_space_read_,BYTES)(t, h1, o1 + o)); \ 575 } \ 576 } 577 __MVME68K_copy_region_N(1) 578 __MVME68K_copy_region_N(2) 579 __MVME68K_copy_region_N(4) 580 581 #undef __MVME68K_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 #ifdef _MVME68K_BUS_SPACE_PRIVATE 602 extern int _bus_space_map(void *, bus_addr_t, bus_size_t, 603 int, bus_space_handle_t *); 604 extern void _bus_space_unmap(void *, bus_space_handle_t, bus_size_t); 605 extern int _bus_space_peek_1(void *, bus_space_handle_t, 606 bus_size_t, uint8_t *); 607 extern int _bus_space_peek_2(void *, bus_space_handle_t, 608 bus_size_t, uint16_t *); 609 extern int _bus_space_peek_4(void *, bus_space_handle_t, 610 bus_size_t, uint32_t *); 611 extern int _bus_space_poke_1(void *, bus_space_handle_t, bus_size_t, uint8_t); 612 extern int _bus_space_poke_2(void *, bus_space_handle_t, bus_size_t, uint16_t); 613 extern int _bus_space_poke_4(void *, bus_space_handle_t, bus_size_t, uint32_t); 614 #endif /* _MVME68K_BUS_SPACE_PRIVATE */ 615 616 #endif /* _MVME68K_BUS_SPACE_H_ */ 617
Indexes created Thu Oct 16 14:10:15 GMT 2025