bus_space.h revision 1.1
1 /* $NetBSD: bus_space.h,v 1.1 1998/06/09 07:53:05 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 * Mapping and unmapping operations. 87 */ 88 #define bus_space_map(t, a, s, f, hp) \ 89 ((((a)>=INTIOBASE)&&((a)+(s)<INTIOTOP)) ? \ 90 ((*(hp)=((t)+((a)-INTIOBASE))),0) : (-1)) 91 92 #define bus_space_unmap(t, h, s) 93 94 #define bus_space_subregion(t, h, o, s, hp) \ 95 (*(hp)=(h)+(o)) 96 97 #define BUS_SPACE_MAP_CACHEABLE 0x01 98 #define BUS_SPACE_MAP_LINEAR 0x02 99 100 /* 101 * Allocation and deallocation operations. 102 */ 103 #define bus_space_alloc(t, rs, re, s, a, b, f, ap, hp) \ 104 (-1) 105 106 #define bus_space_free(t, h, s) 107 108 /* 109 * u_intN_t bus_space_read_N __P((bus_space_tag_t tag, 110 * bus_space_handle_t bsh, bus_size_t offset)); 111 * 112 * Read a 1, 2, 4, or 8 byte quantity from bus space 113 * described by tag/handle/offset. 114 */ 115 116 #define bus_space_read_1(t, h, o) \ 117 ((void) t, (*(volatile u_int8_t *)((h) + (o)))) 118 119 #define bus_space_read_2(t, h, o) \ 120 ((void) t, (*(volatile u_int16_t *)((h) + (o)))) 121 122 #define bus_space_read_4(t, h, o) \ 123 ((void) t, (*(volatile u_int32_t *)((h) + (o)))) 124 125 #if 0 /* Cause a link error for bus_space_read_8 */ 126 #define bus_space_read_8(t, h, o) !!! bus_space_read_8 unimplemented !!! 127 #endif 128 129 /* 130 * void bus_space_read_multi_N __P((bus_space_tag_t tag, 131 * bus_space_handle_t bsh, bus_size_t offset, 132 * u_intN_t *addr, size_t count)); 133 * 134 * Read `count' 1, 2, 4, or 8 byte quantities from bus space 135 * described by tag/handle/offset and copy into buffer provided. 136 */ 137 138 #define bus_space_read_multi_1(t, h, o, a, c) do { \ 139 (void) t; \ 140 __asm __volatile (" \ 141 movl %0,a0 ; \ 142 movl %1,a1 ; \ 143 movl %2,d0 ; \ 144 1: movb a0@,a1@+ ; \ 145 subql #1,d0 ; \ 146 jne 1b" : \ 147 : \ 148 "r" ((h) + (o)), "g" (a), "g" (c) : \ 149 "a0","a1","d0"); \ 150 } while (0); 151 152 #define bus_space_read_multi_2(t, h, o, a, c) do { \ 153 (void) t; \ 154 __asm __volatile (" \ 155 movl %0,a0 ; \ 156 movl %1,a1 ; \ 157 movl %2,d0 ; \ 158 1: movw a0@,a1@+ ; \ 159 subql #1,d0 ; \ 160 jne 1b" : \ 161 : \ 162 "r" ((h) + (o)), "g" (a), "g" (c) : \ 163 "a0","a1","d0"); \ 164 } while (0); 165 166 #define bus_space_read_multi_4(t, h, o, a, c) do { \ 167 (void) t; \ 168 __asm __volatile (" \ 169 movl %0,a0 ; \ 170 movl %1,a1 ; \ 171 movl %2,d0 ; \ 172 1: movl a0@,a1@+ ; \ 173 subql #1,d0 ; \ 174 jne 1b" : \ 175 : \ 176 "r" ((h) + (o)), "g" (a), "g" (c) : \ 177 "a0","a1","d0"); \ 178 } while (0); 179 180 #if 0 /* Cause a link error for bus_space_read_multi_8 */ 181 #define bus_space_read_multi_8 !!! bus_space_read_multi_8 unimplemented !!! 182 #endif 183 184 /* 185 * void bus_space_read_region_N __P((bus_space_tag_t tag, 186 * bus_space_handle_t bsh, bus_size_t offset, 187 * u_intN_t *addr, size_t count)); 188 * 189 * Read `count' 1, 2, 4, or 8 byte quantities from bus space 190 * described by tag/handle and starting at `offset' and copy into 191 * buffer provided. 192 */ 193 194 #define bus_space_read_region_1(t, h, o, a, c) do { \ 195 (void) t; \ 196 __asm __volatile (" \ 197 movl %0,a0 ; \ 198 movl %1,a1 ; \ 199 movl %2,d0 ; \ 200 1: movb a0@+,a1@+ ; \ 201 subql #1,d0 ; \ 202 jne 1b" : \ 203 : \ 204 "r" ((h) + (o)), "g" (a), "g" (c) : \ 205 "a0","a1","d0"); \ 206 } while (0); 207 208 #define bus_space_read_region_2(t, h, o, a, c) do { \ 209 (void) t; \ 210 __asm __volatile (" \ 211 movl %0,a0 ; \ 212 movl %1,a1 ; \ 213 movl %2,d0 ; \ 214 1: movw a0@+,a1@+ ; \ 215 subql #1,d0 ; \ 216 jne 1b" : \ 217 : \ 218 "r" ((h) + (o)), "g" (a), "g" (c) : \ 219 "a0","a1","d0"); \ 220 } while (0); 221 222 #define bus_space_read_region_4(t, h, o, a, c) do { \ 223 (void) t; \ 224 __asm __volatile (" \ 225 movl %0,a0 ; \ 226 movl %1,a1 ; \ 227 movl %2,d0 ; \ 228 1: movl a0@+,a1@+ ; \ 229 subql #1,d0 ; \ 230 jne 1b" : \ 231 : \ 232 "r" ((h) + (o)), "g" (a), "g" (c) : \ 233 "a0","a1","d0"); \ 234 } while (0); 235 236 #if 0 /* Cause a link error for bus_space_read_region_8 */ 237 #define bus_space_read_region_8 !!! bus_space_read_region_8 unimplemented !!! 238 #endif 239 240 /* 241 * void bus_space_write_N __P((bus_space_tag_t tag, 242 * bus_space_handle_t bsh, bus_size_t offset, 243 * u_intN_t value)); 244 * 245 * Write the 1, 2, 4, or 8 byte value `value' to bus space 246 * described by tag/handle/offset. 247 */ 248 249 #define bus_space_write_1(t, h, o, v) \ 250 ((void) t, ((void)(*(volatile u_int8_t *)((h) + (o)) = (v)))) 251 252 #define bus_space_write_2(t, h, o, v) \ 253 ((void) t, ((void)(*(volatile u_int16_t *)((h) + (o)) = (v)))) 254 255 #define bus_space_write_4(t, h, o, v) \ 256 ((void) t, ((void)(*(volatile u_int32_t *)((h) + (o)) = (v)))) 257 258 #if 0 /* Cause a link error for bus_space_write_8 */ 259 #define bus_space_write_8 !!! bus_space_write_8 not implemented !!! 260 #endif 261 262 /* 263 * void bus_space_write_multi_N __P((bus_space_tag_t tag, 264 * bus_space_handle_t bsh, bus_size_t offset, 265 * const u_intN_t *addr, size_t count)); 266 * 267 * Write `count' 1, 2, 4, or 8 byte quantities from the buffer 268 * provided to bus space described by tag/handle/offset. 269 */ 270 271 #define bus_space_write_multi_1(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: movb 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_2(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: movw 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 #define bus_space_write_multi_4(t, h, o, a, c) do { \ 300 (void) t; \ 301 __asm __volatile (" \ 302 movl %0,a0 ; \ 303 movl %1,a1 ; \ 304 movl %2,d0 ; \ 305 1: movl a1@+,a0@ ; \ 306 subql #1,d0 ; \ 307 jne 1b" : \ 308 : \ 309 "r" ((h) + (o)), "g" (a), "g" (c) : \ 310 "a0","a1","d0"); \ 311 } while (0); 312 313 #if 0 /* Cause a link error for bus_space_write_8 */ 314 #define bus_space_write_multi_8(t, h, o, a, c) \ 315 !!! bus_space_write_multi_8 unimplimented !!! 316 #endif 317 318 /* 319 * void bus_space_write_region_N __P((bus_space_tag_t tag, 320 * bus_space_handle_t bsh, bus_size_t offset, 321 * const u_intN_t *addr, size_t count)); 322 * 323 * Write `count' 1, 2, 4, or 8 byte quantities from the buffer provided 324 * to bus space described by tag/handle starting at `offset'. 325 */ 326 327 #define bus_space_write_region_1(t, h, o, a, c) do { \ 328 (void) t; \ 329 __asm __volatile (" \ 330 movl %0,a0 ; \ 331 movl %1,a1 ; \ 332 movl %2,d0 ; \ 333 1: movb a1@+,a0@+ ; \ 334 subql #1,d0 ; \ 335 jne 1b" : \ 336 : \ 337 "r" ((h) + (o)), "g" (a), "g" (c) : \ 338 "a0","a1","d0"); \ 339 } while (0); 340 341 #define bus_space_write_region_2(t, h, o, a, c) do { \ 342 (void) t; \ 343 __asm __volatile (" \ 344 movl %0,a0 ; \ 345 movl %1,a1 ; \ 346 movl %2,d0 ; \ 347 1: movw a1@+,a0@+ ; \ 348 subql #1,d0 ; \ 349 jne 1b" : \ 350 : \ 351 "r" ((h) + (o)), "g" (a), "g" (c) : \ 352 "a0","a1","d0"); \ 353 } while (0); 354 355 #define bus_space_write_region_4(t, h, o, a, c) do { \ 356 (void) t; \ 357 __asm __volatile (" \ 358 movl %0,a0 ; \ 359 movl %1,a1 ; \ 360 movl %2,d0 ; \ 361 1: movl a1@+,a0@+ ; \ 362 subql #1,d0 ; \ 363 jne 1b" : \ 364 : \ 365 "r" ((h) + (o)), "g" (a), "g" (c) : \ 366 "a0","a1","d0"); \ 367 } while (0); 368 369 #if 0 /* Cause a link error for bus_space_write_region_8 */ 370 #define bus_space_write_region_8 \ 371 !!! bus_space_write_region_8 unimplemented !!! 372 #endif 373 374 /* 375 * void bus_space_set_multi_N __P((bus_space_tag_t tag, 376 * bus_space_handle_t bsh, bus_size_t offset, u_intN_t val, 377 * size_t count)); 378 * 379 * Write the 1, 2, 4, or 8 byte value `val' to bus space described 380 * by tag/handle/offset `count' times. 381 */ 382 383 #define bus_space_set_multi_1(t, h, o, val, c) do { \ 384 (void) t; \ 385 __asm __volatile (" \ 386 movl %0,a0 ; \ 387 movl %1,d1 ; \ 388 movl %2,d0 ; \ 389 1: movb d1,a0@ ; \ 390 subql #1,d0 ; \ 391 jne 1b" : \ 392 : \ 393 "r" ((h) + (o)), "g" (val), "g" (c) : \ 394 "a0","d0","d1"); \ 395 } while (0); 396 397 #define bus_space_set_multi_2(t, h, o, val, c) do { \ 398 (void) t; \ 399 __asm __volatile (" \ 400 movl %0,a0 ; \ 401 movl %1,d1 ; \ 402 movl %2,d0 ; \ 403 1: movw d1,a0@ ; \ 404 subql #1,d0 ; \ 405 jne 1b" : \ 406 : \ 407 "r" ((h) + (o)), "g" (val), "g" (c) : \ 408 "a0","d0","d1"); \ 409 } while (0); 410 411 #define bus_space_set_multi_4(t, h, o, val, c) do { \ 412 (void) t; \ 413 __asm __volatile (" \ 414 movl %0,a0 ; \ 415 movl %1,d1 ; \ 416 movl %2,d0 ; \ 417 1: movl d1,a0@ ; \ 418 subql #1,d0 ; \ 419 jne 1b" : \ 420 : \ 421 "r" ((h) + (o)), "g" (val), "g" (c) : \ 422 "a0","d0","d1"); \ 423 } while (0); 424 425 #if 0 /* Cause a link error for bus_space_set_multi_8 */ 426 #define bus_space_set_multi_8 \ 427 !!! bus_space_set_multi_8 unimplemented !!! 428 #endif 429 430 /* 431 * void bus_space_set_region_N __P((bus_space_tag_t tag, 432 * bus_space_handle_t bsh, bus_size_t offset, u_intN_t val, 433 * size_t count)); 434 * 435 * Write `count' 1, 2, 4, or 8 byte value `val' to bus space described 436 * by tag/handle starting at `offset'. 437 */ 438 439 #define bus_space_set_region_1(t, h, o, val, c) do { \ 440 (void) t; \ 441 __asm __volatile (" \ 442 movl %0,a0 ; \ 443 movl %1,d1 ; \ 444 movl %2,d0 ; \ 445 1: movb d1,a0@+ ; \ 446 subql #1,d0 ; \ 447 jne 1b" : \ 448 : \ 449 "r" ((h) + (o)), "g" (val), "g" (c) : \ 450 "a0","d0","d1"); \ 451 } while (0); 452 453 #define bus_space_set_region_2(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: movw 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_region_4(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: movl 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 #if 0 /* Cause a link error for bus_space_set_region_8 */ 482 #define bus_space_set_region_8 \ 483 !!! bus_space_set_region_8 unimplemented !!! 484 #endif 485 486 /* 487 * void bus_space_copy_N __P((bus_space_tag_t tag, 488 * bus_space_handle_t bsh1, bus_size_t off1, 489 * bus_space_handle_t bsh2, bus_size_t off2, 490 * size_t count)); 491 * 492 * Copy `count' 1, 2, 4, or 8 byte values from bus space starting 493 * at tag/bsh1/off1 to bus space starting at tag/bsh2/off2. 494 */ 495 496 #define __NEXT68K_copy_region_N(BYTES) \ 497 static __inline void __CONCAT(bus_space_copy_region_,BYTES) \ 498 __P((bus_space_tag_t, \ 499 bus_space_handle_t bsh1, bus_size_t off1, \ 500 bus_space_handle_t bsh2, bus_size_t off2, \ 501 bus_size_t count)); \ 502 \ 503 static __inline void \ 504 __CONCAT(bus_space_copy_region_,BYTES)(t, h1, o1, h2, o2, c) \ 505 bus_space_tag_t t; \ 506 bus_space_handle_t h1, h2; \ 507 bus_size_t o1, o2, c; \ 508 { \ 509 bus_size_t o; \ 510 \ 511 if ((h1 + o1) >= (h2 + o2)) { \ 512 /* src after dest: copy forward */ \ 513 for (o = 0; c != 0; c--, o += BYTES) \ 514 __CONCAT(bus_space_write_,BYTES)(t, h2, o2 + o, \ 515 __CONCAT(bus_space_read_,BYTES)(t, h1, o1 + o)); \ 516 } else { \ 517 /* dest after src: copy backwards */ \ 518 for (o = (c - 1) * BYTES; c != 0; c--, o -= BYTES) \ 519 __CONCAT(bus_space_write_,BYTES)(t, h2, o2 + o, \ 520 __CONCAT(bus_space_read_,BYTES)(t, h1, o1 + o)); \ 521 } \ 522 } 523 __NEXT68K_copy_region_N(1) 524 __NEXT68K_copy_region_N(2) 525 __NEXT68K_copy_region_N(4) 526 #if 0 /* Cause a link error for bus_space_copy_8 */ 527 #define bus_space_copy_8 \ 528 !!! bus_space_copy_8 unimplemented !!! 529 #endif 530 531 #undef __NEXT68K_copy_region_N 532 533 /* 534 * Bus read/write barrier methods. 535 * 536 * void bus_space_barrier __P((bus_space_tag_t tag, 537 * bus_space_handle_t bsh, bus_size_t offset, 538 * bus_size_t len, int flags)); 539 * 540 * Note: the 680x0 does not currently require barriers, but we must 541 * provide the flags to MI code. 542 */ 543 #define bus_space_barrier(t, h, o, l, f) \ 544 ((void)((void)(t), (void)(h), (void)(o), (void)(l), (void)(f))) 545 #define BUS_SPACE_BARRIER_READ 0x01 /* force read barrier */ 546 #define BUS_SPACE_BARRIER_WRITE 0x02 /* force write barrier */ 547 548 #endif /* _NEXT68K_BUS_SPACE_H_ */ 549
Indexes created Thu Oct 02 01:09:59 GMT 2025