bus_space.h revision 1.3
1 /* $NetBSD: bus_space.h,v 1.3 1999/01/02 13:42:17 dbj 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 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 /* 41 * Copyright (C) 1997 Scott Reynolds. All rights reserved. 42 * 43 * Redistribution and use in source and binary forms, with or without 44 * modification, are permitted provided that the following conditions 45 * are met: 46 * 1. Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * 2. Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in the 50 * documentation and/or other materials provided with the distribution. 51 * 3. The name of the author may not be used to endorse or promote products 52 * derived from this software without specific prior written permission 53 * 54 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 55 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 56 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 57 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 58 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 59 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 60 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 61 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 62 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 63 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 64 */ 65 66 #ifndef _NEXT68K_BUS_SPACE_H_ 67 #define _NEXT68K_BUS_SPACE_H_ 68 /* 69 * Addresses (in bus space). 70 */ 71 typedef u_long bus_addr_t; 72 typedef u_long bus_size_t; 73 74 /* 75 * Access methods for bus resources and address space. 76 */ 77 typedef volatile char * bus_space_tag_t; 78 typedef u_long bus_space_handle_t; 79 80 /* 81 * Value for the next68k bus space tag, not to be used directly by MI code. 82 */ 83 #define NEXT68K_INTIO_BUS_SPACE intiobase 84 85 /* 86 * Value for the next68k video bus space tag, not to be used directly by MI code. 87 */ 88 #define NEXT68K_VIDEO_BUS_SPACE videobase 89 90 /* 91 * Mapping and unmapping operations. 92 */ 93 #define bus_space_map(t, a, s, f, hp) \ 94 ((((a)>=INTIOBASE)&&((a)+(s)<INTIOTOP)) ? \ 95 ((*(hp)=(bus_space_handle_t)((t)+((a)-INTIOBASE))),0) : \ 96 ((((a)>=VIDEOBASE)&&((a)+(s)<VIDEOTOP)) ? \ 97 ((*(hp)=(bus_space_handle_t)((t)+((a)-VIDEOBASE))),0) : \ 98 (-1))) 99 100 #define bus_space_unmap(t, h, s) 101 102 #define bus_space_subregion(t, h, o, s, hp) \ 103 (*(hp)=(h)+(o)) 104 105 #define BUS_SPACE_MAP_CACHEABLE 0x01 106 #define BUS_SPACE_MAP_LINEAR 0x02 107 108 /* 109 * Allocation and deallocation operations. 110 */ 111 #define bus_space_alloc(t, rs, re, s, a, b, f, ap, hp) \ 112 (-1) 113 114 #define bus_space_free(t, h, s) 115 116 /* 117 * u_intN_t bus_space_read_N __P((bus_space_tag_t tag, 118 * bus_space_handle_t bsh, bus_size_t offset)); 119 * 120 * Read a 1, 2, 4, or 8 byte quantity from bus space 121 * described by tag/handle/offset. 122 */ 123 124 #define bus_space_read_1(t, h, o) \ 125 ((void) t, (*(volatile u_int8_t *)((h) + (o)))) 126 127 #define bus_space_read_2(t, h, o) \ 128 ((void) t, (*(volatile u_int16_t *)((h) + (o)))) 129 130 #define bus_space_read_4(t, h, o) \ 131 ((void) t, (*(volatile u_int32_t *)((h) + (o)))) 132 133 #if 0 /* Cause a link error for bus_space_read_8 */ 134 #define bus_space_read_8(t, h, o) !!! bus_space_read_8 unimplemented !!! 135 #endif 136 137 /* 138 * void bus_space_read_multi_N __P((bus_space_tag_t tag, 139 * bus_space_handle_t bsh, bus_size_t offset, 140 * u_intN_t *addr, size_t count)); 141 * 142 * Read `count' 1, 2, 4, or 8 byte quantities from bus space 143 * described by tag/handle/offset and copy into buffer provided. 144 */ 145 146 #define bus_space_read_multi_1(t, h, o, a, c) do { \ 147 (void) t; \ 148 __asm __volatile (" \ 149 movl %0,a0 ; \ 150 movl %1,a1 ; \ 151 movl %2,d0 ; \ 152 1: movb a0@,a1@+ ; \ 153 subql #1,d0 ; \ 154 jne 1b" : \ 155 : \ 156 "r" ((h) + (o)), "g" (a), "g" (c) : \ 157 "a0","a1","d0"); \ 158 } while (0); 159 160 #define bus_space_read_multi_2(t, h, o, a, c) do { \ 161 (void) t; \ 162 __asm __volatile (" \ 163 movl %0,a0 ; \ 164 movl %1,a1 ; \ 165 movl %2,d0 ; \ 166 1: movw a0@,a1@+ ; \ 167 subql #1,d0 ; \ 168 jne 1b" : \ 169 : \ 170 "r" ((h) + (o)), "g" (a), "g" (c) : \ 171 "a0","a1","d0"); \ 172 } while (0); 173 174 #define bus_space_read_multi_4(t, h, o, a, c) do { \ 175 (void) t; \ 176 __asm __volatile (" \ 177 movl %0,a0 ; \ 178 movl %1,a1 ; \ 179 movl %2,d0 ; \ 180 1: movl a0@,a1@+ ; \ 181 subql #1,d0 ; \ 182 jne 1b" : \ 183 : \ 184 "r" ((h) + (o)), "g" (a), "g" (c) : \ 185 "a0","a1","d0"); \ 186 } while (0); 187 188 #if 0 /* Cause a link error for bus_space_read_multi_8 */ 189 #define bus_space_read_multi_8 !!! bus_space_read_multi_8 unimplemented !!! 190 #endif 191 192 /* 193 * void bus_space_read_region_N __P((bus_space_tag_t tag, 194 * bus_space_handle_t bsh, bus_size_t offset, 195 * u_intN_t *addr, size_t count)); 196 * 197 * Read `count' 1, 2, 4, or 8 byte quantities from bus space 198 * described by tag/handle and starting at `offset' and copy into 199 * buffer provided. 200 */ 201 202 #define bus_space_read_region_1(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: movb a0@+,a1@+ ; \ 209 subql #1,d0 ; \ 210 jne 1b" : \ 211 : \ 212 "r" ((h) + (o)), "g" (a), "g" (c) : \ 213 "a0","a1","d0"); \ 214 } while (0); 215 216 #define bus_space_read_region_2(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: movw a0@+,a1@+ ; \ 223 subql #1,d0 ; \ 224 jne 1b" : \ 225 : \ 226 "r" ((h) + (o)), "g" (a), "g" (c) : \ 227 "a0","a1","d0"); \ 228 } while (0); 229 230 #define bus_space_read_region_4(t, h, o, a, c) do { \ 231 (void) t; \ 232 __asm __volatile (" \ 233 movl %0,a0 ; \ 234 movl %1,a1 ; \ 235 movl %2,d0 ; \ 236 1: movl a0@+,a1@+ ; \ 237 subql #1,d0 ; \ 238 jne 1b" : \ 239 : \ 240 "r" ((h) + (o)), "g" (a), "g" (c) : \ 241 "a0","a1","d0"); \ 242 } while (0); 243 244 #if 0 /* Cause a link error for bus_space_read_region_8 */ 245 #define bus_space_read_region_8 !!! bus_space_read_region_8 unimplemented !!! 246 #endif 247 248 /* 249 * void bus_space_write_N __P((bus_space_tag_t tag, 250 * bus_space_handle_t bsh, bus_size_t offset, 251 * u_intN_t value)); 252 * 253 * Write the 1, 2, 4, or 8 byte value `value' to bus space 254 * described by tag/handle/offset. 255 */ 256 257 #define bus_space_write_1(t, h, o, v) \ 258 ((void) t, ((void)(*(volatile u_int8_t *)((h) + (o)) = (v)))) 259 260 #define bus_space_write_2(t, h, o, v) \ 261 ((void) t, ((void)(*(volatile u_int16_t *)((h) + (o)) = (v)))) 262 263 #define bus_space_write_4(t, h, o, v) \ 264 ((void) t, ((void)(*(volatile u_int32_t *)((h) + (o)) = (v)))) 265 266 #if 0 /* Cause a link error for bus_space_write_8 */ 267 #define bus_space_write_8 !!! bus_space_write_8 not implemented !!! 268 #endif 269 270 /* 271 * void bus_space_write_multi_N __P((bus_space_tag_t tag, 272 * bus_space_handle_t bsh, bus_size_t offset, 273 * const u_intN_t *addr, size_t count)); 274 * 275 * Write `count' 1, 2, 4, or 8 byte quantities from the buffer 276 * provided to bus space described by tag/handle/offset. 277 */ 278 279 #define bus_space_write_multi_1(t, h, o, a, c) do { \ 280 (void) t; \ 281 __asm __volatile (" \ 282 movl %0,a0 ; \ 283 movl %1,a1 ; \ 284 movl %2,d0 ; \ 285 1: movb a1@+,a0@ ; \ 286 subql #1,d0 ; \ 287 jne 1b" : \ 288 : \ 289 "r" ((h) + (o)), "g" (a), "g" (c) : \ 290 "a0","a1","d0"); \ 291 } while (0); 292 293 #define bus_space_write_multi_2(t, h, o, a, c) do { \ 294 (void) t; \ 295 __asm __volatile (" \ 296 movl %0,a0 ; \ 297 movl %1,a1 ; \ 298 movl %2,d0 ; \ 299 1: movw a1@+,a0@ ; \ 300 subql #1,d0 ; \ 301 jne 1b" : \ 302 : \ 303 "r" ((h) + (o)), "g" (a), "g" (c) : \ 304 "a0","a1","d0"); \ 305 } while (0); 306 307 #define bus_space_write_multi_4(t, h, o, a, c) do { \ 308 (void) t; \ 309 __asm __volatile (" \ 310 movl %0,a0 ; \ 311 movl %1,a1 ; \ 312 movl %2,d0 ; \ 313 1: movl a1@+,a0@ ; \ 314 subql #1,d0 ; \ 315 jne 1b" : \ 316 : \ 317 "r" ((h) + (o)), "g" (a), "g" (c) : \ 318 "a0","a1","d0"); \ 319 } while (0); 320 321 #if 0 /* Cause a link error for bus_space_write_8 */ 322 #define bus_space_write_multi_8(t, h, o, a, c) \ 323 !!! bus_space_write_multi_8 unimplimented !!! 324 #endif 325 326 /* 327 * void bus_space_write_region_N __P((bus_space_tag_t tag, 328 * bus_space_handle_t bsh, bus_size_t offset, 329 * const u_intN_t *addr, size_t count)); 330 * 331 * Write `count' 1, 2, 4, or 8 byte quantities from the buffer provided 332 * to bus space described by tag/handle starting at `offset'. 333 */ 334 335 #define bus_space_write_region_1(t, h, o, a, c) do { \ 336 (void) t; \ 337 __asm __volatile (" \ 338 movl %0,a0 ; \ 339 movl %1,a1 ; \ 340 movl %2,d0 ; \ 341 1: movb a1@+,a0@+ ; \ 342 subql #1,d0 ; \ 343 jne 1b" : \ 344 : \ 345 "r" ((h) + (o)), "g" (a), "g" (c) : \ 346 "a0","a1","d0"); \ 347 } while (0); 348 349 #define bus_space_write_region_2(t, h, o, a, c) do { \ 350 (void) t; \ 351 __asm __volatile (" \ 352 movl %0,a0 ; \ 353 movl %1,a1 ; \ 354 movl %2,d0 ; \ 355 1: movw a1@+,a0@+ ; \ 356 subql #1,d0 ; \ 357 jne 1b" : \ 358 : \ 359 "r" ((h) + (o)), "g" (a), "g" (c) : \ 360 "a0","a1","d0"); \ 361 } while (0); 362 363 #define bus_space_write_region_4(t, h, o, a, c) do { \ 364 (void) t; \ 365 __asm __volatile (" \ 366 movl %0,a0 ; \ 367 movl %1,a1 ; \ 368 movl %2,d0 ; \ 369 1: movl a1@+,a0@+ ; \ 370 subql #1,d0 ; \ 371 jne 1b" : \ 372 : \ 373 "r" ((h) + (o)), "g" (a), "g" (c) : \ 374 "a0","a1","d0"); \ 375 } while (0); 376 377 #if 0 /* Cause a link error for bus_space_write_region_8 */ 378 #define bus_space_write_region_8 \ 379 !!! bus_space_write_region_8 unimplemented !!! 380 #endif 381 382 /* 383 * void bus_space_set_multi_N __P((bus_space_tag_t tag, 384 * bus_space_handle_t bsh, bus_size_t offset, u_intN_t val, 385 * size_t count)); 386 * 387 * Write the 1, 2, 4, or 8 byte value `val' to bus space described 388 * by tag/handle/offset `count' times. 389 */ 390 391 #define bus_space_set_multi_1(t, h, o, val, c) do { \ 392 (void) t; \ 393 __asm __volatile (" \ 394 movl %0,a0 ; \ 395 movl %1,d1 ; \ 396 movl %2,d0 ; \ 397 1: movb d1,a0@ ; \ 398 subql #1,d0 ; \ 399 jne 1b" : \ 400 : \ 401 "r" ((h) + (o)), "g" (val), "g" (c) : \ 402 "a0","d0","d1"); \ 403 } while (0); 404 405 #define bus_space_set_multi_2(t, h, o, val, c) do { \ 406 (void) t; \ 407 __asm __volatile (" \ 408 movl %0,a0 ; \ 409 movl %1,d1 ; \ 410 movl %2,d0 ; \ 411 1: movw d1,a0@ ; \ 412 subql #1,d0 ; \ 413 jne 1b" : \ 414 : \ 415 "r" ((h) + (o)), "g" (val), "g" (c) : \ 416 "a0","d0","d1"); \ 417 } while (0); 418 419 #define bus_space_set_multi_4(t, h, o, val, c) do { \ 420 (void) t; \ 421 __asm __volatile (" \ 422 movl %0,a0 ; \ 423 movl %1,d1 ; \ 424 movl %2,d0 ; \ 425 1: movl d1,a0@ ; \ 426 subql #1,d0 ; \ 427 jne 1b" : \ 428 : \ 429 "r" ((h) + (o)), "g" (val), "g" (c) : \ 430 "a0","d0","d1"); \ 431 } while (0); 432 433 #if 0 /* Cause a link error for bus_space_set_multi_8 */ 434 #define bus_space_set_multi_8 \ 435 !!! bus_space_set_multi_8 unimplemented !!! 436 #endif 437 438 /* 439 * void bus_space_set_region_N __P((bus_space_tag_t tag, 440 * bus_space_handle_t bsh, bus_size_t offset, u_intN_t val, 441 * size_t count)); 442 * 443 * Write `count' 1, 2, 4, or 8 byte value `val' to bus space described 444 * by tag/handle starting at `offset'. 445 */ 446 447 #define bus_space_set_region_1(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: movb 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_2(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: movw 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 #define bus_space_set_region_4(t, h, o, val, c) do { \ 476 (void) t; \ 477 __asm __volatile (" \ 478 movl %0,a0 ; \ 479 movl %1,d1 ; \ 480 movl %2,d0 ; \ 481 1: movl d1,a0@+ ; \ 482 subql #1,d0 ; \ 483 jne 1b" : \ 484 : \ 485 "r" ((h) + (o)), "g" (val), "g" (c) : \ 486 "a0","d0","d1"); \ 487 } while (0); 488 489 #if 0 /* Cause a link error for bus_space_set_region_8 */ 490 #define bus_space_set_region_8 \ 491 !!! bus_space_set_region_8 unimplemented !!! 492 #endif 493 494 /* 495 * void bus_space_copy_N __P((bus_space_tag_t tag, 496 * bus_space_handle_t bsh1, bus_size_t off1, 497 * bus_space_handle_t bsh2, bus_size_t off2, 498 * size_t count)); 499 * 500 * Copy `count' 1, 2, 4, or 8 byte values from bus space starting 501 * at tag/bsh1/off1 to bus space starting at tag/bsh2/off2. 502 */ 503 504 #define __NEXT68K_copy_region_N(BYTES) \ 505 static __inline void __CONCAT(bus_space_copy_region_,BYTES) \ 506 __P((bus_space_tag_t, \ 507 bus_space_handle_t bsh1, bus_size_t off1, \ 508 bus_space_handle_t bsh2, bus_size_t off2, \ 509 bus_size_t count)); \ 510 \ 511 static __inline void \ 512 __CONCAT(bus_space_copy_region_,BYTES)(t, h1, o1, h2, o2, c) \ 513 bus_space_tag_t t; \ 514 bus_space_handle_t h1, h2; \ 515 bus_size_t o1, o2, c; \ 516 { \ 517 bus_size_t o; \ 518 \ 519 if ((h1 + o1) >= (h2 + o2)) { \ 520 /* src after dest: copy forward */ \ 521 for (o = 0; c != 0; c--, o += BYTES) \ 522 __CONCAT(bus_space_write_,BYTES)(t, h2, o2 + o, \ 523 __CONCAT(bus_space_read_,BYTES)(t, h1, o1 + o)); \ 524 } else { \ 525 /* dest after src: copy backwards */ \ 526 for (o = (c - 1) * BYTES; c != 0; c--, o -= BYTES) \ 527 __CONCAT(bus_space_write_,BYTES)(t, h2, o2 + o, \ 528 __CONCAT(bus_space_read_,BYTES)(t, h1, o1 + o)); \ 529 } \ 530 } 531 __NEXT68K_copy_region_N(1) 532 __NEXT68K_copy_region_N(2) 533 __NEXT68K_copy_region_N(4) 534 #if 0 /* Cause a link error for bus_space_copy_8 */ 535 #define bus_space_copy_8 \ 536 !!! bus_space_copy_8 unimplemented !!! 537 #endif 538 539 #undef __NEXT68K_copy_region_N 540 541 /* 542 * Bus read/write barrier methods. 543 * 544 * void bus_space_barrier __P((bus_space_tag_t tag, 545 * bus_space_handle_t bsh, bus_size_t offset, 546 * bus_size_t len, int flags)); 547 * 548 * Note: the 680x0 does not currently require barriers, but we must 549 * provide the flags to MI code. 550 */ 551 #define bus_space_barrier(t, h, o, l, f) \ 552 ((void)((void)(t), (void)(h), (void)(o), (void)(l), (void)(f))) 553 #define BUS_SPACE_BARRIER_READ 0x01 /* force read barrier */ 554 #define BUS_SPACE_BARRIER_WRITE 0x02 /* force write barrier */ 555 556 #endif /* _NEXT68K_BUS_SPACE_H_ */ 557
Indexes created Thu Oct 02 01:09:59 GMT 2025