bus_space.h revision 1.22
1 /* $NetBSD: bus_space.h,v 1.22 2023/02/03 23:21:18 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 #ifndef _NEXT68K_BUS_SPACE_H_ 60 #define _NEXT68K_BUS_SPACE_H_ 61 /* 62 * Addresses (in bus space). 63 */ 64 typedef u_long bus_addr_t; 65 typedef u_long bus_size_t; 66 67 #define PRIxBUSADDR "lx" 68 #define PRIxBUSSIZE "lx" 69 #define PRIuBUSSIZE "lu" 70 71 /* 72 * Access methods for bus resources and address space. 73 */ 74 typedef volatile char * bus_space_tag_t; 75 typedef u_long bus_space_handle_t; 76 77 #define PRIxBSH "lx" 78 79 /* 80 * Value for the next68k bus space tag, not to be used directly by MI code. 81 */ 82 #define NEXT68K_INTIO_BUS_SPACE ((bus_space_tag_t)intiobase) 83 84 /* 85 * Values for the next68k video bus space tags, not to be used directly 86 * by MI code. 87 */ 88 #define NEXT68K_MONO_VIDEO_BUS_SPACE ((bus_space_tag_t)monobase) 89 #define NEXT68K_COLOR_VIDEO_BUS_SPACE ((bus_space_tag_t)colorbase) 90 91 /* 92 * Mapping and unmapping operations. 93 */ 94 #define bus_space_map(t, a, s, f, hp) \ 95 ((((a)>=INTIOBASE)&&((a)+(s)<INTIOTOP)) ? \ 96 ((*(hp)=(bus_space_handle_t)((t)+((a)-INTIOBASE))),0) : \ 97 ((((a)>=MONOBASE)&&((a)+(s)<MONOTOP)) ? \ 98 ((*(hp)=(bus_space_handle_t)((t)+((a)-MONOBASE))),0) : \ 99 ((((a)>=COLORBASE)&&((a)+(s)<COLORTOP)) ? \ 100 ((*(hp)=(bus_space_handle_t)((t)+((a)-COLORBASE))),0) : (-1)))) 101 102 #define bus_space_unmap(t, h, s) 103 104 #define bus_space_subregion(t, h, o, s, hp) \ 105 (*(hp)=(h)+(o)) 106 107 #define BUS_SPACE_MAP_CACHEABLE 0x01 108 #define BUS_SPACE_MAP_LINEAR 0x02 109 110 /* 111 * Allocation and deallocation operations. 112 */ 113 #define bus_space_alloc(t, rs, re, s, a, b, f, ap, hp) \ 114 (-1) 115 116 #define bus_space_free(t, h, s) 117 118 /* 119 * paddr_t bus_space_mmap(bus_space_tag_t t, bus_addr_t base, 120 * off_t offset, int prot, int flags); 121 * 122 * Mmap an area of bus space. 123 */ 124 125 #define bus_space_mmap(t, a, s, prot, flags) \ 126 ((((a)>=INTIOBASE)&&((a)+(s)<INTIOTOP)) ? \ 127 m68k_btop((t)+((a)-INTIOBASE)) : \ 128 ((((a)>=MONOBASE)&&((a)+(s)<MONOTOP)) ? \ 129 m68k_btop((t)+((a)-MONOBASE)) : \ 130 ((((a)>=COLORBASE)&&((a)+(s)<COLORTOP)) ? \ 131 m68k_btop((t)+((a)-COLORBASE)) : (-1)))) 132 133 /* 134 * uintN_t bus_space_read_N(bus_space_tag_t tag, 135 * bus_space_handle_t bsh, bus_size_t offset); 136 * 137 * Read a 1, 2, 4, or 8 byte quantity from bus space 138 * described by tag/handle/offset. 139 */ 140 141 #define bus_space_read_1(t, h, o) \ 142 ((void) t, (*(volatile uint8_t *)((h) + (o)))) 143 144 #define bus_space_read_2(t, h, o) \ 145 ((void) t, (*(volatile uint16_t *)((h) + (o)))) 146 147 #define bus_space_read_4(t, h, o) \ 148 ((void) t, (*(volatile uint32_t *)((h) + (o)))) 149 150 /* 151 * void bus_space_read_multi_N(bus_space_tag_t tag, 152 * bus_space_handle_t bsh, bus_size_t offset, 153 * uintN_t *addr, size_t count); 154 * 155 * Read `count' 1, 2, 4, or 8 byte quantities from bus space 156 * described by tag/handle/offset and copy into buffer provided. 157 */ 158 159 #define bus_space_read_multi_1(t, h, o, a, c) do { \ 160 (void) t; \ 161 __asm volatile (" \ 162 movl %0,%%a0 ; \ 163 movl %1,%%a1 ; \ 164 movl %2,%%d0 ; \ 165 1: movb %%a0@,%%a1@+ ; \ 166 subql #1,%%d0 ; \ 167 jne 1b" : \ 168 : \ 169 "r" ((h) + (o)), "g" (a), "g" (c) : \ 170 "a0","a1","d0","memory"); \ 171 } while (0); 172 173 #define bus_space_read_multi_2(t, h, o, a, c) do { \ 174 (void) t; \ 175 __asm volatile (" \ 176 movl %0,%%a0 ; \ 177 movl %1,%%a1 ; \ 178 movl %2,%%d0 ; \ 179 1: movw %%a0@,%%a1@+ ; \ 180 subql #1,%%d0 ; \ 181 jne 1b" : \ 182 : \ 183 "r" ((h) + (o)), "g" (a), "g" (c) : \ 184 "a0","a1","d0","memory"); \ 185 } while (0); 186 187 #define bus_space_read_multi_4(t, h, o, a, c) do { \ 188 (void) t; \ 189 __asm volatile (" \ 190 movl %0,%%a0 ; \ 191 movl %1,%%a1 ; \ 192 movl %2,%%d0 ; \ 193 1: movl %%a0@,%%a1@+ ; \ 194 subql #1,%%d0 ; \ 195 jne 1b" : \ 196 : \ 197 "r" ((h) + (o)), "g" (a), "g" (c) : \ 198 "a0","a1","d0","memory"); \ 199 } while (0); 200 201 /* 202 * void bus_space_read_region_N(bus_space_tag_t tag, 203 * bus_space_handle_t bsh, bus_size_t offset, 204 * uintN_t *addr, size_t count); 205 * 206 * Read `count' 1, 2, 4, or 8 byte quantities from bus space 207 * described by tag/handle and starting at `offset' and copy into 208 * buffer provided. 209 */ 210 211 #define bus_space_read_region_1(t, h, o, a, c) do { \ 212 (void) t; \ 213 __asm volatile (" \ 214 movl %0,%%a0 ; \ 215 movl %1,%%a1 ; \ 216 movl %2,%%d0 ; \ 217 1: movb %%a0@+,%%a1@+ ; \ 218 subql #1,%%d0 ; \ 219 jne 1b" : \ 220 : \ 221 "r" ((h) + (o)), "g" (a), "g" (c) : \ 222 "a0","a1","d0","memory"); \ 223 } while (0); 224 225 #define bus_space_read_region_2(t, h, o, a, c) do { \ 226 (void) t; \ 227 __asm volatile (" \ 228 movl %0,%%a0 ; \ 229 movl %1,%%a1 ; \ 230 movl %2,%%d0 ; \ 231 1: movw %%a0@+,%%a1@+ ; \ 232 subql #1,%%d0 ; \ 233 jne 1b" : \ 234 : \ 235 "r" ((h) + (o)), "g" (a), "g" (c) : \ 236 "a0","a1","d0","memory"); \ 237 } while (0); 238 239 #define bus_space_read_region_4(t, h, o, a, c) do { \ 240 (void) t; \ 241 __asm volatile (" \ 242 movl %0,%%a0 ; \ 243 movl %1,%%a1 ; \ 244 movl %2,%%d0 ; \ 245 1: movl %%a0@+,%%a1@+ ; \ 246 subql #1,%%d0 ; \ 247 jne 1b" : \ 248 : \ 249 "r" ((h) + (o)), "g" (a), "g" (c) : \ 250 "a0","a1","d0","memory"); \ 251 } while (0); 252 253 /* 254 * void bus_space_write_N(bus_space_tag_t tag, 255 * bus_space_handle_t bsh, bus_size_t offset, 256 * uintN_t value); 257 * 258 * Write the 1, 2, 4, or 8 byte value `value' to bus space 259 * described by tag/handle/offset. 260 */ 261 262 #define bus_space_write_1(t, h, o, v) \ 263 ((void) t, ((void)(*(volatile uint8_t *)((h) + (o)) = (v)))) 264 265 #define bus_space_write_2(t, h, o, v) \ 266 ((void) t, ((void)(*(volatile uint16_t *)((h) + (o)) = (v)))) 267 268 #define bus_space_write_4(t, h, o, v) \ 269 ((void) t, ((void)(*(volatile uint32_t *)((h) + (o)) = (v)))) 270 271 /* 272 * void bus_space_write_multi_N(bus_space_tag_t tag, 273 * bus_space_handle_t bsh, bus_size_t offset, 274 * const uintN_t *addr, size_t count); 275 * 276 * Write `count' 1, 2, 4, or 8 byte quantities from the buffer 277 * provided to bus space described by tag/handle/offset. 278 */ 279 280 #define bus_space_write_multi_1(t, h, o, a, c) do { \ 281 (void) t; \ 282 __asm volatile (" \ 283 movl %0,%%a0 ; \ 284 movl %1,%%a1 ; \ 285 movl %2,%%d0 ; \ 286 1: movb %%a1@+,%%a0@ ; \ 287 subql #1,%%d0 ; \ 288 jne 1b" : \ 289 : \ 290 "r" ((h) + (o)), "g" (a), "g" (c) : \ 291 "a0","a1","d0"); \ 292 } while (0); 293 294 #define bus_space_write_multi_2(t, h, o, a, c) do { \ 295 (void) t; \ 296 __asm volatile (" \ 297 movl %0,%%a0 ; \ 298 movl %1,%%a1 ; \ 299 movl %2,%%d0 ; \ 300 1: movw %%a1@+,%%a0@ ; \ 301 subql #1,%%d0 ; \ 302 jne 1b" : \ 303 : \ 304 "r" ((h) + (o)), "g" (a), "g" (c) : \ 305 "a0","a1","d0"); \ 306 } while (0); 307 308 #define bus_space_write_multi_4(t, h, o, a, c) do { \ 309 (void) t; \ 310 __asm volatile (" \ 311 movl %0,%%a0 ; \ 312 movl %1,%%a1 ; \ 313 movl %2,%%d0 ; \ 314 1: movl %%a1@+,%%a0@ ; \ 315 subql #1,%%d0 ; \ 316 jne 1b" : \ 317 : \ 318 "r" ((h) + (o)), "g" (a), "g" (c) : \ 319 "a0","a1","d0"); \ 320 } while (0); 321 322 /* 323 * void bus_space_write_region_N(bus_space_tag_t tag, 324 * bus_space_handle_t bsh, bus_size_t offset, 325 * const uintN_t *addr, size_t count); 326 * 327 * Write `count' 1, 2, 4, or 8 byte quantities from the buffer provided 328 * to bus space described by tag/handle starting at `offset'. 329 */ 330 331 #define bus_space_write_region_1(t, h, o, a, c) do { \ 332 (void) t; \ 333 __asm volatile (" \ 334 movl %0,%%a0 ; \ 335 movl %1,%%a1 ; \ 336 movl %2,%%d0 ; \ 337 1: movb %%a1@+,%%a0@+ ; \ 338 subql #1,%%d0 ; \ 339 jne 1b" : \ 340 : \ 341 "r" ((h) + (o)), "g" (a), "g" (c) : \ 342 "a0","a1","d0"); \ 343 } while (0); 344 345 #define bus_space_write_region_2(t, h, o, a, c) do { \ 346 (void) t; \ 347 __asm volatile (" \ 348 movl %0,%%a0 ; \ 349 movl %1,%%a1 ; \ 350 movl %2,%%d0 ; \ 351 1: movw %%a1@+,%%a0@+ ; \ 352 subql #1,%%d0 ; \ 353 jne 1b" : \ 354 : \ 355 "r" ((h) + (o)), "g" (a), "g" (c) : \ 356 "a0","a1","d0"); \ 357 } while (0); 358 359 #define bus_space_write_region_4(t, h, o, a, c) do { \ 360 (void) t; \ 361 __asm volatile (" \ 362 movl %0,%%a0 ; \ 363 movl %1,%%a1 ; \ 364 movl %2,%%d0 ; \ 365 1: movl %%a1@+,%%a0@+ ; \ 366 subql #1,%%d0 ; \ 367 jne 1b" : \ 368 : \ 369 "r" ((h) + (o)), "g" (a), "g" (c) : \ 370 "a0","a1","d0"); \ 371 } while (0); 372 373 /* 374 * void bus_space_set_multi_N(bus_space_tag_t tag, 375 * bus_space_handle_t bsh, bus_size_t offset, uintN_t val, 376 * size_t count); 377 * 378 * Write the 1, 2, 4, or 8 byte value `val' to bus space described 379 * by tag/handle/offset `count' times. 380 */ 381 382 #define bus_space_set_multi_1(t, h, o, val, c) do { \ 383 (void) t; \ 384 __asm volatile (" \ 385 movl %0,%%a0 ; \ 386 movl %1,%%d1 ; \ 387 movl %2,%%d0 ; \ 388 1: movb %%d1,%%a0@ ; \ 389 subql #1,%%d0 ; \ 390 jne 1b" : \ 391 : \ 392 "r" ((h) + (o)), "g" (val), "g" (c) : \ 393 "a0","d0","d1"); \ 394 } while (0); 395 396 #define bus_space_set_multi_2(t, h, o, val, c) do { \ 397 (void) t; \ 398 __asm volatile (" \ 399 movl %0,%%a0 ; \ 400 movl %1,%%d1 ; \ 401 movl %2,%%d0 ; \ 402 1: movw %%d1,%%a0@ ; \ 403 subql #1,%%d0 ; \ 404 jne 1b" : \ 405 : \ 406 "r" ((h) + (o)), "g" (val), "g" (c) : \ 407 "a0","d0","d1"); \ 408 } while (0); 409 410 #define bus_space_set_multi_4(t, h, o, val, c) do { \ 411 (void) t; \ 412 __asm volatile (" \ 413 movl %0,%%a0 ; \ 414 movl %1,%%d1 ; \ 415 movl %2,%%d0 ; \ 416 1: movl %%d1,%%a0@ ; \ 417 subql #1,%%d0 ; \ 418 jne 1b" : \ 419 : \ 420 "r" ((h) + (o)), "g" (val), "g" (c) : \ 421 "a0","d0","d1"); \ 422 } while (0); 423 424 /* 425 * void bus_space_set_region_N(bus_space_tag_t tag, 426 * bus_space_handle_t bsh, bus_size_t offset, uintN_t val, 427 * size_t count); 428 * 429 * Write `count' 1, 2, 4, or 8 byte value `val' to bus space described 430 * by tag/handle starting at `offset'. 431 */ 432 433 #define bus_space_set_region_1(t, h, o, val, c) do { \ 434 (void) t; \ 435 __asm volatile (" \ 436 movl %0,%%a0 ; \ 437 movl %1,%%d1 ; \ 438 movl %2,%%d0 ; \ 439 1: movb %%d1,%%a0@+ ; \ 440 subql #1,%%d0 ; \ 441 jne 1b" : \ 442 : \ 443 "r" ((h) + (o)), "g" (val), "g" (c) : \ 444 "a0","d0","d1"); \ 445 } while (0); 446 447 #define bus_space_set_region_2(t, h, o, val, c) do { \ 448 (void) t; \ 449 __asm volatile (" \ 450 movl %0,%%a0 ; \ 451 movl %1,%%d1 ; \ 452 movl %2,%%d0 ; \ 453 1: movw %%d1,%%a0@+ ; \ 454 subql #1,%%d0 ; \ 455 jne 1b" : \ 456 : \ 457 "r" ((h) + (o)), "g" (val), "g" (c) : \ 458 "a0","d0","d1"); \ 459 } while (0); 460 461 #define bus_space_set_region_4(t, h, o, val, c) do { \ 462 (void) t; \ 463 __asm volatile (" \ 464 movl %0,%%a0 ; \ 465 movl %1,%%d1 ; \ 466 movl %2,%%d0 ; \ 467 1: movl %%d1,%%a0@+ ; \ 468 subql #1,%%d0 ; \ 469 jne 1b" : \ 470 : \ 471 "r" ((h) + (o)), "g" (val), "g" (c) : \ 472 "a0","d0","d1"); \ 473 } while (0); 474 475 /* 476 * void bus_space_copy_N(bus_space_tag_t tag, 477 * bus_space_handle_t bsh1, bus_size_t off1, 478 * bus_space_handle_t bsh2, bus_size_t off2, 479 * size_t count); 480 * 481 * Copy `count' 1, 2, 4, or 8 byte values from bus space starting 482 * at tag/bsh1/off1 to bus space starting at tag/bsh2/off2. 483 */ 484 485 #define __NEXT68K_copy_region_N(BYTES) \ 486 static __inline void __CONCAT(bus_space_copy_region_,BYTES) \ 487 (bus_space_tag_t, \ 488 bus_space_handle_t, bus_size_t, \ 489 bus_space_handle_t, bus_size_t, \ 490 bus_size_t); \ 491 \ 492 static __inline void \ 493 __CONCAT(bus_space_copy_region_,BYTES)( \ 494 bus_space_tag_t t, \ 495 bus_space_handle_t h1, \ 496 bus_size_t o1, \ 497 bus_space_handle_t h2, \ 498 bus_size_t o2, \ 499 bus_size_t c) \ 500 { \ 501 bus_size_t o; \ 502 \ 503 if ((h1 + o1) >= (h2 + o2)) { \ 504 /* src after dest: copy forward */ \ 505 for (o = 0; c != 0; c--, o += BYTES) \ 506 __CONCAT(bus_space_write_,BYTES)(t, h2, o2 + o, \ 507 __CONCAT(bus_space_read_,BYTES)(t, h1, o1 + o)); \ 508 } else { \ 509 /* dest after src: copy backwards */ \ 510 for (o = (c - 1) * BYTES; c != 0; c--, o -= BYTES) \ 511 __CONCAT(bus_space_write_,BYTES)(t, h2, o2 + o, \ 512 __CONCAT(bus_space_read_,BYTES)(t, h1, o1 + o)); \ 513 } \ 514 } 515 __NEXT68K_copy_region_N(1) 516 __NEXT68K_copy_region_N(2) 517 __NEXT68K_copy_region_N(4) 518 519 #undef __NEXT68K_copy_region_N 520 521 /* 522 * Bus read/write barrier methods. 523 * 524 * void bus_space_barrier(bus_space_tag_t tag, 525 * bus_space_handle_t bsh, bus_size_t offset, 526 * bus_size_t len, int flags); 527 * 528 * Note: the 680x0 does not currently require barriers, but we must 529 * provide the flags to MI code. 530 */ 531 #define bus_space_barrier(t, h, o, l, f) \ 532 ((void)((void)(t), (void)(h), (void)(o), (void)(l), (void)(f))) 533 #define BUS_SPACE_BARRIER_READ 0x01 /* force read barrier */ 534 #define BUS_SPACE_BARRIER_WRITE 0x02 /* force write barrier */ 535 536 #define BUS_SPACE_ALIGNED_POINTER(p, t) ALIGNED_POINTER(p, t) 537 538 #endif /* _NEXT68K_BUS_SPACE_H_ */ 539
Indexes created Thu Oct 02 01:09:59 GMT 2025