bus_space.h revision 1.16.52.2
1 /* $NetBSD: bus_space.h,v 1.16.52.2 2023/02/15 19:28:29 martin 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 /* 68 * Access methods for bus resources and address space. 69 */ 70 typedef volatile char * bus_space_tag_t; 71 typedef u_long bus_space_handle_t; 72 73 /* 74 * Value for the next68k bus space tag, not to be used directly by MI code. 75 */ 76 #define NEXT68K_INTIO_BUS_SPACE ((bus_space_tag_t)intiobase) 77 78 /* 79 * Mapping and unmapping operations. 80 */ 81 82 int bus_space_map(bus_space_tag_t, bus_addr_t, bus_size_t, int, 83 bus_space_handle_t *); 84 85 #define bus_space_unmap(t, h, s) 86 87 #define bus_space_subregion(t, h, o, s, hp) \ 88 (*(hp)=(h)+(o)) 89 90 #define BUS_SPACE_MAP_CACHEABLE 0x01 91 #define BUS_SPACE_MAP_LINEAR 0x02 92 93 /* 94 * Allocation and deallocation operations. 95 */ 96 #define bus_space_alloc(t, rs, re, s, a, b, f, ap, hp) \ 97 (-1) 98 99 #define bus_space_free(t, h, s) 100 101 /* 102 * paddr_t bus_space_mmap(bus_space_tag_t t, bus_addr_t base, 103 * off_t offset, int prot, int flags); 104 * 105 * Mmap an area of bus space. 106 */ 107 108 paddr_t bus_space_mmap(bus_space_tag_t, bus_addr_t, off_t, int, int); 109 110 /* 111 * uintN_t bus_space_read_N(bus_space_tag_t tag, 112 * bus_space_handle_t bsh, bus_size_t offset); 113 * 114 * Read a 1, 2, 4, or 8 byte quantity from bus space 115 * described by tag/handle/offset. 116 */ 117 118 #define bus_space_read_1(t, h, o) \ 119 ((void) t, (*(volatile uint8_t *)((h) + (o)))) 120 121 #define bus_space_read_2(t, h, o) \ 122 ((void) t, (*(volatile uint16_t *)((h) + (o)))) 123 124 #define bus_space_read_4(t, h, o) \ 125 ((void) t, (*(volatile uint32_t *)((h) + (o)))) 126 127 /* 128 * void bus_space_read_multi_N(bus_space_tag_t tag, 129 * bus_space_handle_t bsh, bus_size_t offset, 130 * uintN_t *addr, size_t count); 131 * 132 * Read `count' 1, 2, 4, or 8 byte quantities from bus space 133 * described by tag/handle/offset and copy into buffer provided. 134 */ 135 136 #define bus_space_read_multi_1(t, h, o, a, c) do { \ 137 (void) t; \ 138 __asm volatile (" \ 139 movl %0,%%a0 ; \ 140 movl %1,%%a1 ; \ 141 movl %2,%%d0 ; \ 142 1: movb %%a0@,%%a1@+ ; \ 143 subql #1,%%d0 ; \ 144 jne 1b" : \ 145 : \ 146 "r" ((h) + (o)), "g" (a), "g" (c) : \ 147 "a0","a1","d0","memory"); \ 148 } while (0); 149 150 #define bus_space_read_multi_2(t, h, o, a, c) do { \ 151 (void) t; \ 152 __asm volatile (" \ 153 movl %0,%%a0 ; \ 154 movl %1,%%a1 ; \ 155 movl %2,%%d0 ; \ 156 1: movw %%a0@,%%a1@+ ; \ 157 subql #1,%%d0 ; \ 158 jne 1b" : \ 159 : \ 160 "r" ((h) + (o)), "g" (a), "g" (c) : \ 161 "a0","a1","d0","memory"); \ 162 } while (0); 163 164 #define bus_space_read_multi_4(t, h, o, a, c) do { \ 165 (void) t; \ 166 __asm volatile (" \ 167 movl %0,%%a0 ; \ 168 movl %1,%%a1 ; \ 169 movl %2,%%d0 ; \ 170 1: movl %%a0@,%%a1@+ ; \ 171 subql #1,%%d0 ; \ 172 jne 1b" : \ 173 : \ 174 "r" ((h) + (o)), "g" (a), "g" (c) : \ 175 "a0","a1","d0","memory"); \ 176 } while (0); 177 178 /* 179 * void bus_space_read_region_N(bus_space_tag_t tag, 180 * bus_space_handle_t bsh, bus_size_t offset, 181 * uintN_t *addr, size_t count); 182 * 183 * Read `count' 1, 2, 4, or 8 byte quantities from bus space 184 * described by tag/handle and starting at `offset' and copy into 185 * buffer provided. 186 */ 187 188 #define bus_space_read_region_1(t, h, o, a, c) do { \ 189 (void) t; \ 190 __asm volatile (" \ 191 movl %0,%%a0 ; \ 192 movl %1,%%a1 ; \ 193 movl %2,%%d0 ; \ 194 1: movb %%a0@+,%%a1@+ ; \ 195 subql #1,%%d0 ; \ 196 jne 1b" : \ 197 : \ 198 "r" ((h) + (o)), "g" (a), "g" (c) : \ 199 "a0","a1","d0","memory"); \ 200 } while (0); 201 202 #define bus_space_read_region_2(t, h, o, a, c) do { \ 203 (void) t; \ 204 __asm volatile (" \ 205 movl %0,%%a0 ; \ 206 movl %1,%%a1 ; \ 207 movl %2,%%d0 ; \ 208 1: movw %%a0@+,%%a1@+ ; \ 209 subql #1,%%d0 ; \ 210 jne 1b" : \ 211 : \ 212 "r" ((h) + (o)), "g" (a), "g" (c) : \ 213 "a0","a1","d0","memory"); \ 214 } while (0); 215 216 #define bus_space_read_region_4(t, h, o, a, c) do { \ 217 (void) t; \ 218 __asm volatile (" \ 219 movl %0,%%a0 ; \ 220 movl %1,%%a1 ; \ 221 movl %2,%%d0 ; \ 222 1: movl %%a0@+,%%a1@+ ; \ 223 subql #1,%%d0 ; \ 224 jne 1b" : \ 225 : \ 226 "r" ((h) + (o)), "g" (a), "g" (c) : \ 227 "a0","a1","d0","memory"); \ 228 } while (0); 229 230 /* 231 * void bus_space_write_N(bus_space_tag_t tag, 232 * bus_space_handle_t bsh, bus_size_t offset, 233 * uintN_t value); 234 * 235 * Write the 1, 2, 4, or 8 byte value `value' to bus space 236 * described by tag/handle/offset. 237 */ 238 239 #define bus_space_write_1(t, h, o, v) \ 240 ((void) t, ((void)(*(volatile uint8_t *)((h) + (o)) = (v)))) 241 242 #define bus_space_write_2(t, h, o, v) \ 243 ((void) t, ((void)(*(volatile uint16_t *)((h) + (o)) = (v)))) 244 245 #define bus_space_write_4(t, h, o, v) \ 246 ((void) t, ((void)(*(volatile uint32_t *)((h) + (o)) = (v)))) 247 248 /* 249 * void bus_space_write_multi_N(bus_space_tag_t tag, 250 * bus_space_handle_t bsh, bus_size_t offset, 251 * const uintN_t *addr, size_t count); 252 * 253 * Write `count' 1, 2, 4, or 8 byte quantities from the buffer 254 * provided to bus space described by tag/handle/offset. 255 */ 256 257 #define bus_space_write_multi_1(t, h, o, a, c) do { \ 258 (void) t; \ 259 __asm volatile (" \ 260 movl %0,%%a0 ; \ 261 movl %1,%%a1 ; \ 262 movl %2,%%d0 ; \ 263 1: movb %%a1@+,%%a0@ ; \ 264 subql #1,%%d0 ; \ 265 jne 1b" : \ 266 : \ 267 "r" ((h) + (o)), "g" (a), "g" (c) : \ 268 "a0","a1","d0"); \ 269 } while (0); 270 271 #define bus_space_write_multi_2(t, h, o, a, c) do { \ 272 (void) t; \ 273 __asm volatile (" \ 274 movl %0,%%a0 ; \ 275 movl %1,%%a1 ; \ 276 movl %2,%%d0 ; \ 277 1: movw %%a1@+,%%a0@ ; \ 278 subql #1,%%d0 ; \ 279 jne 1b" : \ 280 : \ 281 "r" ((h) + (o)), "g" (a), "g" (c) : \ 282 "a0","a1","d0"); \ 283 } while (0); 284 285 #define bus_space_write_multi_4(t, h, o, a, c) do { \ 286 (void) t; \ 287 __asm volatile (" \ 288 movl %0,%%a0 ; \ 289 movl %1,%%a1 ; \ 290 movl %2,%%d0 ; \ 291 1: movl %%a1@+,%%a0@ ; \ 292 subql #1,%%d0 ; \ 293 jne 1b" : \ 294 : \ 295 "r" ((h) + (o)), "g" (a), "g" (c) : \ 296 "a0","a1","d0"); \ 297 } while (0); 298 299 /* 300 * void bus_space_write_region_N(bus_space_tag_t tag, 301 * bus_space_handle_t bsh, bus_size_t offset, 302 * const uintN_t *addr, size_t count); 303 * 304 * Write `count' 1, 2, 4, or 8 byte quantities from the buffer provided 305 * to bus space described by tag/handle starting at `offset'. 306 */ 307 308 #define bus_space_write_region_1(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: movb %%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 #define bus_space_write_region_2(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: movw %%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_region_4(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: movl %%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 /* 351 * void bus_space_set_multi_N(bus_space_tag_t tag, 352 * bus_space_handle_t bsh, bus_size_t offset, uintN_t val, 353 * size_t count); 354 * 355 * Write the 1, 2, 4, or 8 byte value `val' to bus space described 356 * by tag/handle/offset `count' times. 357 */ 358 359 #define bus_space_set_multi_1(t, h, o, val, c) do { \ 360 (void) t; \ 361 __asm volatile (" \ 362 movl %0,%%a0 ; \ 363 movl %1,%%d1 ; \ 364 movl %2,%%d0 ; \ 365 1: movb %%d1,%%a0@ ; \ 366 subql #1,%%d0 ; \ 367 jne 1b" : \ 368 : \ 369 "r" ((h) + (o)), "g" (val), "g" (c) : \ 370 "a0","d0","d1"); \ 371 } while (0); 372 373 #define bus_space_set_multi_2(t, h, o, val, c) do { \ 374 (void) t; \ 375 __asm volatile (" \ 376 movl %0,%%a0 ; \ 377 movl %1,%%d1 ; \ 378 movl %2,%%d0 ; \ 379 1: movw %%d1,%%a0@ ; \ 380 subql #1,%%d0 ; \ 381 jne 1b" : \ 382 : \ 383 "r" ((h) + (o)), "g" (val), "g" (c) : \ 384 "a0","d0","d1"); \ 385 } while (0); 386 387 #define bus_space_set_multi_4(t, h, o, val, c) do { \ 388 (void) t; \ 389 __asm volatile (" \ 390 movl %0,%%a0 ; \ 391 movl %1,%%d1 ; \ 392 movl %2,%%d0 ; \ 393 1: movl %%d1,%%a0@ ; \ 394 subql #1,%%d0 ; \ 395 jne 1b" : \ 396 : \ 397 "r" ((h) + (o)), "g" (val), "g" (c) : \ 398 "a0","d0","d1"); \ 399 } while (0); 400 401 /* 402 * void bus_space_set_region_N(bus_space_tag_t tag, 403 * bus_space_handle_t bsh, bus_size_t offset, uintN_t val, 404 * size_t count); 405 * 406 * Write `count' 1, 2, 4, or 8 byte value `val' to bus space described 407 * by tag/handle starting at `offset'. 408 */ 409 410 #define bus_space_set_region_1(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: movb %%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 #define bus_space_set_region_2(t, h, o, val, c) do { \ 425 (void) t; \ 426 __asm volatile (" \ 427 movl %0,%%a0 ; \ 428 movl %1,%%d1 ; \ 429 movl %2,%%d0 ; \ 430 1: movw %%d1,%%a0@+ ; \ 431 subql #1,%%d0 ; \ 432 jne 1b" : \ 433 : \ 434 "r" ((h) + (o)), "g" (val), "g" (c) : \ 435 "a0","d0","d1"); \ 436 } while (0); 437 438 #define bus_space_set_region_4(t, h, o, val, c) do { \ 439 (void) t; \ 440 __asm volatile (" \ 441 movl %0,%%a0 ; \ 442 movl %1,%%d1 ; \ 443 movl %2,%%d0 ; \ 444 1: movl %%d1,%%a0@+ ; \ 445 subql #1,%%d0 ; \ 446 jne 1b" : \ 447 : \ 448 "r" ((h) + (o)), "g" (val), "g" (c) : \ 449 "a0","d0","d1"); \ 450 } while (0); 451 452 /* 453 * void bus_space_copy_N(bus_space_tag_t tag, 454 * bus_space_handle_t bsh1, bus_size_t off1, 455 * bus_space_handle_t bsh2, bus_size_t off2, 456 * size_t count); 457 * 458 * Copy `count' 1, 2, 4, or 8 byte values from bus space starting 459 * at tag/bsh1/off1 to bus space starting at tag/bsh2/off2. 460 */ 461 462 #define __NEXT68K_copy_region_N(BYTES) \ 463 static __inline void __CONCAT(bus_space_copy_region_,BYTES) \ 464 (bus_space_tag_t, \ 465 bus_space_handle_t, bus_size_t, \ 466 bus_space_handle_t, bus_size_t, \ 467 bus_size_t); \ 468 \ 469 static __inline void \ 470 __CONCAT(bus_space_copy_region_,BYTES)( \ 471 bus_space_tag_t t, \ 472 bus_space_handle_t h1, \ 473 bus_size_t o1, \ 474 bus_space_handle_t h2, \ 475 bus_size_t o2, \ 476 bus_size_t c) \ 477 { \ 478 bus_size_t o; \ 479 \ 480 if ((h1 + o1) >= (h2 + o2)) { \ 481 /* src after dest: copy forward */ \ 482 for (o = 0; c != 0; c--, o += BYTES) \ 483 __CONCAT(bus_space_write_,BYTES)(t, h2, o2 + o, \ 484 __CONCAT(bus_space_read_,BYTES)(t, h1, o1 + o)); \ 485 } else { \ 486 /* dest after src: copy backwards */ \ 487 for (o = (c - 1) * BYTES; c != 0; c--, o -= BYTES) \ 488 __CONCAT(bus_space_write_,BYTES)(t, h2, o2 + o, \ 489 __CONCAT(bus_space_read_,BYTES)(t, h1, o1 + o)); \ 490 } \ 491 } 492 __NEXT68K_copy_region_N(1) 493 __NEXT68K_copy_region_N(2) 494 __NEXT68K_copy_region_N(4) 495 496 #undef __NEXT68K_copy_region_N 497 498 /* 499 * Bus read/write barrier methods. 500 * 501 * void bus_space_barrier(bus_space_tag_t tag, 502 * bus_space_handle_t bsh, bus_size_t offset, 503 * bus_size_t len, int flags); 504 * 505 * Note: the 680x0 does not currently require barriers, but we must 506 * provide the flags to MI code. 507 */ 508 #define bus_space_barrier(t, h, o, l, f) \ 509 ((void)((void)(t), (void)(h), (void)(o), (void)(l), (void)(f))) 510 #define BUS_SPACE_BARRIER_READ 0x01 /* force read barrier */ 511 #define BUS_SPACE_BARRIER_WRITE 0x02 /* force write barrier */ 512 513 #define BUS_SPACE_ALIGNED_POINTER(p, t) ALIGNED_POINTER(p, t) 514 515 #endif /* _NEXT68K_BUS_SPACE_H_ */ 516
Indexes created Sun Oct 19 02:09:48 GMT 2025