1 /* $NetBSD: bus_space.h,v 1.1 2024/01/02 07:41:00 thorpej 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 #ifndef _VIRT68K_BUS_SPACE_H_ 60 #define _VIRT68K_BUS_SPACE_H_ 61 62 /* 63 * Addresses (in bus space). 64 */ 65 typedef u_long bus_addr_t; 66 typedef u_long bus_size_t; 67 68 #define PRIxBUSADDR "lx" 69 #define PRIxBUSSIZE "lx" 70 #define PRIuBUSSIZE "lu" 71 72 /* 73 * Access methods for bus resources and address space. 74 */ 75 struct virt68k_bus_space_tag; 76 typedef struct virt68k_bus_space_tag *bus_space_tag_t; 77 typedef u_long bus_space_handle_t; 78 79 #define PRIxBSH "lx" 80 81 struct virt68k_bus_space_tag { 82 void *bs_cookie; 83 int (*bs_map)(void *, bus_addr_t, bus_size_t, 84 int, bus_space_handle_t *); 85 void (*bs_unmap)(void *, bus_space_handle_t, bus_size_t); 86 int (*bs_peek_1)(void *, bus_space_handle_t, 87 bus_size_t, uint8_t *); 88 int (*bs_peek_2)(void *, bus_space_handle_t, 89 bus_size_t, uint16_t *); 90 int (*bs_peek_4)(void *, bus_space_handle_t, 91 bus_size_t, uint32_t *); 92 #if 0 93 int (*bs_peek_8)(void *, bus_space_handle_t, 94 bus_size_t, uint64_t *); 95 #endif 96 int (*bs_poke_1)(void *, bus_space_handle_t, 97 bus_size_t, uint8_t); 98 int (*bs_poke_2)(void *, bus_space_handle_t, 99 bus_size_t, uint16_t); 100 int (*bs_poke_4)(void *, bus_space_handle_t, 101 bus_size_t, uint32_t); 102 #if 0 103 int (*bs_poke_8)(void *, bus_space_handle_t, 104 bus_size_t, uint64_t); 105 #endif 106 }; 107 108 /* 109 * int bus_space_map(bus_space_tag_t t, bus_addr_t addr, 110 * bus_size_t size, int flags, 111 * bus_space_handle_t *bshp); 112 * 113 * Map a region of bus space. 114 */ 115 #define bus_space_map(tag, offset, size, flags, handlep) \ 116 (*((tag)->bs_map))((tag)->bs_cookie, (offset), (size), (flags), (handlep)) 117 118 /* 119 * Possible values for the 'flags' parameter of bus_space_map() 120 */ 121 #define BUS_SPACE_MAP_CACHEABLE 0x01 122 #define BUS_SPACE_MAP_LINEAR 0x02 123 #define BUS_SPACE_MAP_PREFETCHABLE 0x04 124 125 /* 126 * void bus_space_unmap(bus_space_tag_t t, 127 * bus_space_handle_t bsh, bus_size_t size); 128 * 129 * Unmap a region of bus space. 130 */ 131 #define bus_space_unmap(tag, handle, size) \ 132 (*((tag)->bs_unmap))((tag)->bs_cookie, (handle), (size)) 133 134 /* 135 * int bus_space_subregion(bus_space_tag_t t, bus_space_handle_t h 136 * bus_addr_t offset, bus_size_t size, bus_space_handle_t *newh); 137 * 138 * Allocate a sub-region of an existing map 139 */ 140 #define bus_space_subregion(t, h, o, s, hp) \ 141 ((*(hp)=(h)+(o)), 0) 142 143 /* 144 * Allocation and deallocation operations. 145 */ 146 #define bus_space_alloc(t, rs, re, s, a, b, f, ap, hp) \ 147 (-1) 148 149 #define bus_space_free(t, h, s) 150 151 /* 152 * int bus_space_peek_N(bus_space_tag_t tag, 153 * bus_space_handle_t bsh, bus_size_t offset, uintN_t *valuep); 154 * 155 * Cautiously read 1, 2, 4 or 8 byte quantity from bus space described 156 * by tag/handle/offset. 157 * If no hardware responds to the read access, the function returns a 158 * non-zero value. Otherwise the value read is placed in `valuep'. 159 */ 160 #define bus_space_peek_1(t, h, o, vp) \ 161 (*((t)->bs_peek_1))((t)->bs_cookie, (h), (o), (vp)) 162 163 #define bus_space_peek_2(t, h, o, vp) \ 164 (*((t)->bs_peek_2))((t)->bs_cookie, (h), (o), (vp)) 165 166 #define bus_space_peek_4(t, h, o, vp) \ 167 (*((t)->bs_peek_4))((t)->bs_cookie, (h), (o), (vp)) 168 169 /* 170 * int bus_space_poke_N(bus_space_tag_t tag, 171 * bus_space_handle_t bsh, bus_size_t offset, uintN_t value); 172 * 173 * Cautiously write 1, 2, 4 or 8 byte quantity to bus space described 174 * by tag/handle/offset. 175 * If no hardware responds to the write access, the function returns a 176 * non-zero value. 177 */ 178 #define bus_space_poke_1(t, h, o, v) \ 179 (*((t)->bs_poke_1))((t)->bs_cookie, (h), (o), (v)) 180 181 #define bus_space_poke_2(t, h, o, v) \ 182 (*((t)->bs_poke_2))((t)->bs_cookie, (h), (o), (v)) 183 184 #define bus_space_poke_4(t, h, o, v) \ 185 (*((t)->bs_poke_4))((t)->bs_cookie, (h), (o), (v)) 186 187 /* 188 * uintN_t bus_space_read_N(bus_space_tag_t tag, 189 * bus_space_handle_t bsh, bus_size_t offset); 190 * 191 * Read a 1, 2, 4, or 8 byte quantity from bus space 192 * described by tag/handle/offset. 193 */ 194 static inline uint8_t 195 bus_space_read_1(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o) 196 { 197 (void) t; 198 return *(volatile uint8_t *)((intptr_t)(h + o)); 199 } 200 201 static inline uint16_t 202 bus_space_read_2(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o) 203 { 204 (void) t; 205 return *(volatile uint16_t *)((intptr_t)(h + o)); 206 } 207 208 static inline uint32_t 209 bus_space_read_4(bus_space_tag_t t, bus_space_handle_t h, bus_size_t o) 210 { 211 (void) t; 212 return *(volatile uint32_t *)((intptr_t)(h + o)); 213 } 214 215 /* 216 * void bus_space_read_multi_N(bus_space_tag_t tag, 217 * bus_space_handle_t bsh, bus_size_t offset, 218 * uintN_t *addr, size_t count); 219 * 220 * Read `count' 1, 2, 4, or 8 byte quantities from bus space 221 * described by tag/handle/offset and copy into buffer provided. 222 */ 223 224 #define bus_space_read_multi_1(t, h, o, a, c) do { \ 225 (void) t; \ 226 __asm volatile (" \ 227 movl %0,%%a0 ; \ 228 movl %1,%%a1 ; \ 229 movl %2,%%d0 ; \ 230 1: movb %%a0@,%%a1@+ ; \ 231 subql #1,%%d0 ; \ 232 jne 1b" : \ 233 : \ 234 "r" ((h) + (o)), "g" (a), "g" (c) : \ 235 "a0","a1","d0","memory"); \ 236 } while (0); 237 238 #define bus_space_read_multi_2(t, h, o, a, c) do { \ 239 (void) t; \ 240 __asm volatile (" \ 241 movl %0,%%a0 ; \ 242 movl %1,%%a1 ; \ 243 movl %2,%%d0 ; \ 244 1: movw %%a0@,%%a1@+ ; \ 245 subql #1,%%d0 ; \ 246 jne 1b" : \ 247 : \ 248 "r" ((h) + (o)), "g" (a), "g" (c) : \ 249 "a0","a1","d0","memory"); \ 250 } while (0); 251 252 #define bus_space_read_multi_4(t, h, o, a, c) do { \ 253 (void) t; \ 254 __asm volatile (" \ 255 movl %0,%%a0 ; \ 256 movl %1,%%a1 ; \ 257 movl %2,%%d0 ; \ 258 1: movl %%a0@,%%a1@+ ; \ 259 subql #1,%%d0 ; \ 260 jne 1b" : \ 261 : \ 262 "r" ((h) + (o)), "g" (a), "g" (c) : \ 263 "a0","a1","d0","memory"); \ 264 } while (0); 265 266 /* 267 * void bus_space_read_region_N(bus_space_tag_t tag, 268 * bus_space_handle_t bsh, bus_size_t offset, 269 * uintN_t *addr, size_t count); 270 * 271 * Read `count' 1, 2, 4, or 8 byte quantities from bus space 272 * described by tag/handle and starting at `offset' and copy into 273 * buffer provided. 274 */ 275 276 #define bus_space_read_region_1(t, h, o, a, c) do { \ 277 (void) t; \ 278 __asm volatile (" \ 279 movl %0,%%a0 ; \ 280 movl %1,%%a1 ; \ 281 movl %2,%%d0 ; \ 282 1: movb %%a0@+,%%a1@+ ; \ 283 subql #1,%%d0 ; \ 284 jne 1b" : \ 285 : \ 286 "r" ((h) + (o)), "g" (a), "g" (c) : \ 287 "a0","a1","d0","memory"); \ 288 } while (0); 289 290 #define bus_space_read_region_2(t, h, o, a, c) do { \ 291 (void) t; \ 292 __asm volatile (" \ 293 movl %0,%%a0 ; \ 294 movl %1,%%a1 ; \ 295 movl %2,%%d0 ; \ 296 1: movw %%a0@+,%%a1@+ ; \ 297 subql #1,%%d0 ; \ 298 jne 1b" : \ 299 : \ 300 "r" ((h) + (o)), "g" (a), "g" (c) : \ 301 "a0","a1","d0","memory"); \ 302 } while (0); 303 304 #define bus_space_read_region_4(t, h, o, a, c) do { \ 305 (void) t; \ 306 __asm volatile (" \ 307 movl %0,%%a0 ; \ 308 movl %1,%%a1 ; \ 309 movl %2,%%d0 ; \ 310 1: movl %%a0@+,%%a1@+ ; \ 311 subql #1,%%d0 ; \ 312 jne 1b" : \ 313 : \ 314 "r" ((h) + (o)), "g" (a), "g" (c) : \ 315 "a0","a1","d0","memory"); \ 316 } while (0); 317 318 /* 319 * void bus_space_write_N(bus_space_tag_t tag, 320 * bus_space_handle_t bsh, bus_size_t offset, 321 * uintN_t value); 322 * 323 * Write the 1, 2, 4, or 8 byte value `value' to bus space 324 * described by tag/handle/offset. 325 */ 326 #define bus_space_write_1(t,h,o,v) \ 327 do { \ 328 (void) t; \ 329 *((volatile uint8_t *)(intptr_t)((h) + (o))) = (v); \ 330 } while (/*CONSTCOND*/0) 331 #define bus_space_write_2(t,h,o,v) \ 332 do { \ 333 (void) t; \ 334 *((volatile uint16_t *)(intptr_t)((h) + (o))) = (v); \ 335 } while (/*CONSTCOND*/0) 336 #define bus_space_write_4(t,h,o,v) \ 337 do { \ 338 (void) t; \ 339 *((volatile uint32_t *)(intptr_t)((h) + (o))) = (v); \ 340 } while (/*CONSTCOND*/0) 341 342 /* 343 * void bus_space_write_multi_N(bus_space_tag_t tag, 344 * bus_space_handle_t bsh, bus_size_t offset, 345 * const uintN_t *addr, size_t count); 346 * 347 * Write `count' 1, 2, 4, or 8 byte quantities from the buffer 348 * provided to bus space described by tag/handle/offset. 349 */ 350 351 #define bus_space_write_multi_1(t, h, o, a, c) do { \ 352 (void) t; \ 353 __asm volatile (" \ 354 movl %0,%%a0 ; \ 355 movl %1,%%a1 ; \ 356 movl %2,%%d0 ; \ 357 1: movb %%a1@+,%%a0@ ; \ 358 subql #1,%%d0 ; \ 359 jne 1b" : \ 360 : \ 361 "r" ((h) + (o)), "g" (a), "g" (c) : \ 362 "a0","a1","d0"); \ 363 } while (0); 364 365 #define bus_space_write_multi_2(t, h, o, a, c) do { \ 366 (void) t; \ 367 __asm volatile (" \ 368 movl %0,%%a0 ; \ 369 movl %1,%%a1 ; \ 370 movl %2,%%d0 ; \ 371 1: movw %%a1@+,%%a0@ ; \ 372 subql #1,%%d0 ; \ 373 jne 1b" : \ 374 : \ 375 "r" ((h) + (o)), "g" (a), "g" (c) : \ 376 "a0","a1","d0"); \ 377 } while (0); 378 379 #define bus_space_write_multi_4(t, h, o, a, c) do { \ 380 (void) t; \ 381 __asm volatile (" \ 382 movl %0,%%a0 ; \ 383 movl %1,%%a1 ; \ 384 movl %2,%%d0 ; \ 385 1: movl a1@+,%%a0@ ; \ 386 subql #1,%%d0 ; \ 387 jne 1b" : \ 388 : \ 389 "r" ((h) + (o)), "g" (a), "g" (c) : \ 390 "a0","a1","d0"); \ 391 } while (0); 392 393 /* 394 * void bus_space_write_region_N(bus_space_tag_t tag, 395 * bus_space_handle_t bsh, bus_size_t offset, 396 * const uintN_t *addr, size_t count); 397 * 398 * Write `count' 1, 2, 4, or 8 byte quantities from the buffer provided 399 * to bus space described by tag/handle starting at `offset'. 400 */ 401 402 #define bus_space_write_region_1(t, h, o, a, c) do { \ 403 (void) t; \ 404 __asm volatile (" \ 405 movl %0,%%a0 ; \ 406 movl %1,%%a1 ; \ 407 movl %2,%%d0 ; \ 408 1: movb %%a1@+,%%a0@+ ; \ 409 subql #1,%%d0 ; \ 410 jne 1b" : \ 411 : \ 412 "r" ((h) + (o)), "g" (a), "g" (c) : \ 413 "a0","a1","d0"); \ 414 } while (0); 415 416 #define bus_space_write_region_2(t, h, o, a, c) do { \ 417 (void) t; \ 418 __asm volatile (" \ 419 movl %0,%%a0 ; \ 420 movl %1,%%a1 ; \ 421 movl %2,%%d0 ; \ 422 1: movw %%a1@+,%%a0@+ ; \ 423 subql #1,%%d0 ; \ 424 jne 1b" : \ 425 : \ 426 "r" ((h) + (o)), "g" (a), "g" (c) : \ 427 "a0","a1","d0"); \ 428 } while (0); 429 430 #define bus_space_write_region_4(t, h, o, a, c) do { \ 431 (void) t; \ 432 __asm volatile (" \ 433 movl %0,%%a0 ; \ 434 movl %1,%%a1 ; \ 435 movl %2,%%d0 ; \ 436 1: movl %%a1@+,%%a0@+ ; \ 437 subql #1,%%d0 ; \ 438 jne 1b" : \ 439 : \ 440 "r" ((h) + (o)), "g" (a), "g" (c) : \ 441 "a0","a1","d0"); \ 442 } while (0); 443 444 /* 445 * void bus_space_set_multi_N(bus_space_tag_t tag, 446 * bus_space_handle_t bsh, bus_size_t offset, uintN_t val, 447 * size_t count); 448 * 449 * Write the 1, 2, 4, or 8 byte value `val' to bus space described 450 * by tag/handle/offset `count' times. 451 */ 452 453 #define bus_space_set_multi_1(t, h, o, val, c) do { \ 454 (void) t; \ 455 __asm volatile (" \ 456 movl %0,%%a0 ; \ 457 movl %1,%%d1 ; \ 458 movl %2,%%d0 ; \ 459 1: movb %%d1,%%a0@ ; \ 460 subql #1,%%d0 ; \ 461 jne 1b" : \ 462 : \ 463 "r" ((h) + (o)), "g" (val), "g" (c) : \ 464 "a0","d0","d1"); \ 465 } while (0); 466 467 #define bus_space_set_multi_2(t, h, o, val, c) do { \ 468 (void) t; \ 469 __asm volatile (" \ 470 movl %0,%%a0 ; \ 471 movl %1,%%d1 ; \ 472 movl %2,%%d0 ; \ 473 1: movw %%d1,%%a0@ ; \ 474 subql #1,%%d0 ; \ 475 jne 1b" : \ 476 : \ 477 "r" ((h) + (o)), "g" (val), "g" (c) : \ 478 "a0","d0","d1"); \ 479 } while (0); 480 481 #define bus_space_set_multi_4(t, h, o, val, c) do { \ 482 (void) t; \ 483 __asm volatile (" \ 484 movl %0,%%a0 ; \ 485 movl %1,%%d1 ; \ 486 movl %2,%%d0 ; \ 487 1: movl %%d1,%%a0@ ; \ 488 subql #1,%%d0 ; \ 489 jne 1b" : \ 490 : \ 491 "r" ((h) + (o)), "g" (val), "g" (c) : \ 492 "a0","d0","d1"); \ 493 } while (0); 494 495 /* 496 * void bus_space_set_region_N(bus_space_tag_t tag, 497 * bus_space_handle_t bsh, bus_size_t offset, uintN_t val, 498 * size_t count); 499 * 500 * Write `count' 1, 2, 4, or 8 byte value `val' to bus space described 501 * by tag/handle starting at `offset'. 502 */ 503 504 #define bus_space_set_region_1(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: movb %%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_2(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: movw %%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 #define bus_space_set_region_4(t, h, o, val, c) do { \ 533 (void) t; \ 534 __asm volatile (" \ 535 movl %0,%%a0 ; \ 536 movl %1,%%d1 ; \ 537 movl %2,%%d0 ; \ 538 1: movl d1,%%a0@+ ; \ 539 subql #1,%%d0 ; \ 540 jne 1b" : \ 541 : \ 542 "r" ((h) + (o)), "g" (val), "g" (c) : \ 543 "a0","d0","d1"); \ 544 } while (0); 545 546 /* 547 * void bus_space_copy_N(bus_space_tag_t tag, 548 * bus_space_handle_t bsh1, bus_size_t off1, 549 * bus_space_handle_t bsh2, bus_size_t off2, 550 * size_t count); 551 * 552 * Copy `count' 1, 2, 4, or 8 byte values from bus space starting 553 * at tag/bsh1/off1 to bus space starting at tag/bsh2/off2. 554 */ 555 556 #define __VIRT68K_copy_region_N(BYTES) \ 557 static __inline void __CONCAT(bus_space_copy_region_,BYTES) \ 558 (bus_space_tag_t, \ 559 bus_space_handle_t bsh1, bus_size_t off1, \ 560 bus_space_handle_t bsh2, bus_size_t off2, \ 561 bus_size_t count); \ 562 \ 563 static __inline void \ 564 __CONCAT(bus_space_copy_region_,BYTES)( \ 565 bus_space_tag_t t, \ 566 bus_space_handle_t h1, \ 567 bus_size_t o1, \ 568 bus_space_handle_t h2, \ 569 bus_size_t o2, \ 570 bus_size_t c) \ 571 { \ 572 bus_size_t o; \ 573 (void) t; \ 574 \ 575 if ((h1 + o1) >= (h2 + o2)) { \ 576 /* src after dest: copy forward */ \ 577 for (o = 0; c != 0; c--, o += BYTES) \ 578 __CONCAT(bus_space_write_,BYTES)(t, h2, o2 + o, \ 579 __CONCAT(bus_space_read_,BYTES)(t, h1, o1 + o)); \ 580 } else { \ 581 /* dest after src: copy backwards */ \ 582 for (o = (c - 1) * BYTES; c != 0; c--, o -= BYTES) \ 583 __CONCAT(bus_space_write_,BYTES)(t, h2, o2 + o, \ 584 __CONCAT(bus_space_read_,BYTES)(t, h1, o1 + o)); \ 585 } \ 586 } 587 __VIRT68K_copy_region_N(1) 588 __VIRT68K_copy_region_N(2) 589 __VIRT68K_copy_region_N(4) 590 591 #undef __VIRT68K_copy_region_N 592 593 /* 594 * Bus read/write barrier methods. 595 * 596 * void bus_space_barrier(bus_space_tag_t tag, 597 * bus_space_handle_t bsh, bus_size_t offset, 598 * bus_size_t len, int flags); 599 * 600 * Note: the 680x0 does not currently require barriers, but we must 601 * provide the flags to MI code. 602 */ 603 #define bus_space_barrier(t, h, o, l, f) \ 604 ((void)((void)(t), (void)(h), (void)(o), (void)(l), (void)(f))) 605 #define BUS_SPACE_BARRIER_READ 0x01 /* force read barrier */ 606 #define BUS_SPACE_BARRIER_WRITE 0x02 /* force write barrier */ 607 608 #define BUS_SPACE_ALIGNED_POINTER(p, t) ALIGNED_POINTER(p, t) 609 610 611 #ifdef _VIRT68K_BUS_SPACE_PRIVATE 612 extern int _bus_space_map(void *, bus_addr_t, bus_size_t, 613 int, bus_space_handle_t *); 614 extern void _bus_space_unmap(void *, bus_space_handle_t, bus_size_t); 615 extern int _bus_space_peek_1(void *, bus_space_handle_t, 616 bus_size_t, uint8_t *); 617 extern int _bus_space_peek_2(void *, bus_space_handle_t, 618 bus_size_t, uint16_t *); 619 extern int _bus_space_peek_4(void *, bus_space_handle_t, 620 bus_size_t, uint32_t *); 621 extern int _bus_space_poke_1(void *, bus_space_handle_t, bus_size_t, uint8_t); 622 extern int _bus_space_poke_2(void *, bus_space_handle_t, bus_size_t, uint16_t); 623 extern int _bus_space_poke_4(void *, bus_space_handle_t, bus_size_t, uint32_t); 624 #endif /* _VIRT68K_BUS_SPACE_PRIVATE */ 625 626 #endif /* _VIRT68K_BUS_SPACE_H_ */ 627
Indexes created Sun Sep 21 16:09:51 GMT 2025