bus.h revision 1.6
1 /* $NetBSD: bus.h,v 1.6 1997/02/24 05:55:14 scottr Exp $ */ 2 3 /* 4 * Copyright (C) 1997 Scott Reynolds. All rights reserved. 5 * Copyright (C) 1996 Jason R. Thorpe. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Scott Reynolds and 18 * Jason Thorpe for the NetBSD Project. 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #ifndef _MAC68K_BUS_H_ 35 #define _MAC68K_BUS_H_ 36 37 /* 38 * Value for the mac68k bus space tag, not to be used directly by MI code. 39 */ 40 #define MAC68K_BUS_SPACE_MEM 0 /* space is mem space */ 41 42 /* 43 * Bus address and size types 44 */ 45 typedef u_long bus_addr_t; 46 typedef u_long bus_size_t; 47 48 /* 49 * Access methods for bus resources and address space. 50 */ 51 typedef int bus_space_tag_t; 52 typedef u_long bus_space_handle_t; 53 54 int bus_space_map __P((bus_space_tag_t, bus_addr_t, bus_size_t, 55 int, bus_space_handle_t *)); 56 void bus_space_unmap __P((bus_space_tag_t, bus_space_handle_t, 57 bus_size_t)); 58 int bus_space_subregion __P((bus_space_tag_t t, bus_space_handle_t bsh, 59 bus_size_t offset, bus_size_t size, bus_space_handle_t *nbshp)); 60 61 int bus_space_alloc __P((bus_space_tag_t t, bus_addr_t rstart, 62 bus_addr_t rend, bus_size_t size, bus_size_t align, 63 bus_size_t boundary, int cacheable, bus_addr_t *addrp, 64 bus_space_handle_t *bshp)); 65 void bus_space_free __P((bus_space_tag_t t, bus_space_handle_t bsh, 66 bus_size_t size)); 67 68 /* 69 * u_intN_t bus_space_read_N __P((bus_space_tag_t tag, 70 * bus_space_handle_t bsh, bus_size_t offset)); 71 * 72 * Read a 1, 2, 4, or 8 byte quantity from bus space 73 * described by tag/handle/offset. 74 */ 75 76 #define bus_space_read_1(t, h, o) \ 77 ((void) t, (*(volatile u_int8_t *)((h) + (o)))) 78 79 #define bus_space_read_2(t, h, o) \ 80 ((void) t, (*(volatile u_int16_t *)((h) + (o)))) 81 82 #define bus_space_read_4(t, h, o) \ 83 ((void) t, (*(volatile u_int32_t *)((h) + (o)))) 84 85 #if 0 /* Cause a link error for bus_space_read_8 */ 86 #define bus_space_read_8(t, h, o) !!! bus_space_read_8 unimplemented !!! 87 #endif 88 89 /* 90 * void bus_space_read_multi_N __P((bus_space_tag_t tag, 91 * bus_space_handle_t bsh, bus_size_t offset, 92 * u_intN_t *addr, size_t count)); 93 * 94 * Read `count' 1, 2, 4, or 8 byte quantities from bus space 95 * described by tag/handle/offset and copy into buffer provided. 96 */ 97 98 #define bus_space_read_multi_1(t, h, o, a, c) do { \ 99 (void) t; \ 100 __asm __volatile (" \ 101 movl %0,a0 ; \ 102 movl %1,a1 ; \ 103 movl %2,d0 ; \ 104 1: movb a0@,a1@+ ; \ 105 subql #1,d0 ; \ 106 jne 1b" : \ 107 : \ 108 "r" ((h) + (o)), "g" (a), "g" (c) : \ 109 "a0","a1","d0"); \ 110 } while (0); 111 112 #define bus_space_read_multi_2(t, h, o, a, c) do { \ 113 (void) t; \ 114 __asm __volatile (" \ 115 movl %0,a0 ; \ 116 movl %1,a1 ; \ 117 movl %2,d0 ; \ 118 1: movw a0@,a1@+ ; \ 119 subql #1,d0 ; \ 120 jne 1b" : \ 121 : \ 122 "r" ((h) + (o)), "g" (a), "g" (c) : \ 123 "a0","a1","d0"); \ 124 } while (0); 125 126 #define bus_space_read_multi_4(t, h, o, a, c) do { \ 127 (void) t; \ 128 __asm __volatile (" \ 129 movl %0,a0 ; \ 130 movl %1,a1 ; \ 131 movl %2,d0 ; \ 132 1: movl a0@,a1@+ ; \ 133 subql #1,d0 ; \ 134 jne 1b" : \ 135 : \ 136 "r" ((h) + (o)), "g" (a), "g" (c) : \ 137 "a0","a1","d0"); \ 138 } while (0); 139 140 #if 0 /* Cause a link error for bus_space_read_multi_8 */ 141 #define bus_space_read_multi_8 !!! bus_space_read_multi_8 unimplemented !!! 142 #endif 143 144 /* 145 * void bus_space_read_region_N __P((bus_space_tag_t tag, 146 * bus_space_handle_t bsh, bus_size_t offset, 147 * u_intN_t *addr, size_t count)); 148 * 149 * Read `count' 1, 2, 4, or 8 byte quantities from bus space 150 * described by tag/handle and starting at `offset' and copy into 151 * buffer provided. 152 */ 153 154 #define bus_space_read_region_1(t, h, o, a, c) do { \ 155 (void) t; \ 156 __asm __volatile (" \ 157 movl %0,a0 ; \ 158 movl %1,a1 ; \ 159 movl %2,d0 ; \ 160 1: movb a0@+,a1@+ ; \ 161 subql #1,d0 ; \ 162 jne 1b" : \ 163 : \ 164 "r" ((h) + (o)), "g" (a), "g" (c) : \ 165 "a0","a1","d0"); \ 166 } while (0); 167 168 #define bus_space_read_region_2(t, h, o, a, c) do { \ 169 (void) t; \ 170 __asm __volatile (" \ 171 movl %0,a0 ; \ 172 movl %1,a1 ; \ 173 movl %2,d0 ; \ 174 1: movw a0@+,a1@+ ; \ 175 subql #1,d0 ; \ 176 jne 1b" : \ 177 : \ 178 "r" ((h) + (o)), "g" (a), "g" (c) : \ 179 "a0","a1","d0"); \ 180 } while (0); 181 182 #define bus_space_read_region_4(t, h, o, a, c) do { \ 183 (void) t; \ 184 __asm __volatile (" \ 185 movl %0,a0 ; \ 186 movl %1,a1 ; \ 187 movl %2,d0 ; \ 188 1: movl a0@+,a1@+ ; \ 189 subql #1,d0 ; \ 190 jne 1b" : \ 191 : \ 192 "r" ((h) + (o)), "g" (a), "g" (c) : \ 193 "a0","a1","d0"); \ 194 } while (0); 195 196 #if 0 /* Cause a link error for bus_space_read_region_8 */ 197 #define bus_space_read_region_8 !!! bus_space_read_region_8 unimplemented !!! 198 #endif 199 200 /* 201 * void bus_space_write_N __P((bus_space_tag_t tag, 202 * bus_space_handle_t bsh, bus_size_t offset, 203 * u_intN_t value)); 204 * 205 * Write the 1, 2, 4, or 8 byte value `value' to bus space 206 * described by tag/handle/offset. 207 */ 208 209 #define bus_space_write_1(t, h, o, v) \ 210 ((void) t, ((void)(*(volatile u_int8_t *)((h) + (o)) = (v)))) 211 212 #define bus_space_write_2(t, h, o, v) \ 213 ((void) t, ((void)(*(volatile u_int16_t *)((h) + (o)) = (v)))) 214 215 #define bus_space_write_4(t, h, o, v) \ 216 ((void) t, ((void)(*(volatile u_int32_t *)((h) + (o)) = (v)))) 217 218 #if 0 /* Cause a link error for bus_space_write_8 */ 219 #define bus_space_write_8 !!! bus_space_write_8 not implemented !!! 220 #endif 221 222 /* 223 * void bus_space_write_multi_N __P((bus_space_tag_t tag, 224 * bus_space_handle_t bsh, bus_size_t offset, 225 * const u_intN_t *addr, size_t count)); 226 * 227 * Write `count' 1, 2, 4, or 8 byte quantities from the buffer 228 * provided to bus space described by tag/handle/offset. 229 */ 230 231 #define bus_space_write_multi_1(t, h, o, a, c) do { \ 232 (void) t; \ 233 __asm __volatile (" \ 234 movl %0,a0 ; \ 235 movl %1,a1 ; \ 236 movl %2,d0 ; \ 237 1: movb a1@+,a0@ ; \ 238 subql #1,d0 ; \ 239 jne 1b" : \ 240 : \ 241 "r" ((h) + (o)), "g" (a), "g" (c) : \ 242 "a0","a1","d0"); \ 243 } while (0); 244 245 #define bus_space_write_multi_2(t, h, o, a, c) do { \ 246 (void) t; \ 247 __asm __volatile (" \ 248 movl %0,a0 ; \ 249 movl %1,a1 ; \ 250 movl %2,d0 ; \ 251 1: movw a1@+,a0@ ; \ 252 subql #1,d0 ; \ 253 jne 1b" : \ 254 : \ 255 "r" ((h) + (o)), "g" (a), "g" (c) : \ 256 "a0","a1","d0"); \ 257 } while (0); 258 259 #define bus_space_write_multi_4(t, h, o, a, c) do { \ 260 (void) t; \ 261 __asm __volatile (" \ 262 movl %0,a0 ; \ 263 movl %1,a1 ; \ 264 movl %2,d0 ; \ 265 1: movl a1@+,a0@ ; \ 266 subql #1,d0 ; \ 267 jne 1b" : \ 268 : \ 269 "r" ((h) + (o)), "g" (a), "g" (c) : \ 270 "a0","a1","d0"); \ 271 } while (0); 272 273 #if 0 /* Cause a link error for bus_space_write_8 */ 274 #define bus_space_write_multi_8(t, h, o, a, c) \ 275 !!! bus_space_write_multi_8 unimplimented !!! 276 #endif 277 278 /* 279 * void bus_space_write_region_N __P((bus_space_tag_t tag, 280 * bus_space_handle_t bsh, bus_size_t offset, 281 * const u_intN_t *addr, size_t count)); 282 * 283 * Write `count' 1, 2, 4, or 8 byte quantities from the buffer provided 284 * to bus space described by tag/handle starting at `offset'. 285 */ 286 287 #define bus_space_write_region_1(t, h, o, a, c) do { \ 288 (void) t; \ 289 __asm __volatile (" \ 290 movl %0,a0 ; \ 291 movl %1,a1 ; \ 292 movl %2,d0 ; \ 293 1: movb a1@+,a0@+ ; \ 294 subql #1,d0 ; \ 295 jne 1b" : \ 296 : \ 297 "r" ((h) + (o)), "g" (a), "g" (c) : \ 298 "a0","a1","d0"); \ 299 } while (0); 300 301 #define bus_space_write_region_2(t, h, o, a, c) do { \ 302 (void) t; \ 303 __asm __volatile (" \ 304 movl %0,a0 ; \ 305 movl %1,a1 ; \ 306 movl %2,d0 ; \ 307 1: movw a1@+,a0@+ ; \ 308 subql #1,d0 ; \ 309 jne 1b" : \ 310 : \ 311 "r" ((h) + (o)), "g" (a), "g" (c) : \ 312 "a0","a1","d0"); \ 313 } while (0); 314 315 #define bus_space_write_region_4(t, h, o, a, c) do { \ 316 (void) t; \ 317 __asm __volatile (" \ 318 movl %0,a0 ; \ 319 movl %1,a1 ; \ 320 movl %2,d0 ; \ 321 1: movl a1@+,a0@+ ; \ 322 subql #1,d0 ; \ 323 jne 1b" : \ 324 : \ 325 "r" ((h) + (o)), "g" (a), "g" (c) : \ 326 "a0","a1","d0"); \ 327 } while (0); 328 329 #if 0 /* Cause a link error for bus_space_write_region_8 */ 330 #define bus_space_write_region_8 \ 331 !!! bus_space_write_region_8 unimplemented !!! 332 #endif 333 334 /* 335 * void bus_space_set_multi_N __P((bus_space_tag_t tag, 336 * bus_space_handle_t bsh, bus_size_t offset, u_intN_t val, 337 * size_t count)); 338 * 339 * Write the 1, 2, 4, or 8 byte value `val' to bus space described 340 * by tag/handle/offset `count' times. 341 */ 342 343 #define bus_space_set_multi_1(t, h, o, val, c) do { \ 344 (void) t; \ 345 __asm __volatile (" \ 346 movl %0,a0 ; \ 347 movl %1,d1 ; \ 348 movl %2,d0 ; \ 349 1: movb d1,a0@ ; \ 350 subql #1,d0 ; \ 351 jne 1b" : \ 352 : \ 353 "r" ((h) + (o)), "g" (val), "g" (c) : \ 354 "a0","d0","d1"); \ 355 } while (0); 356 357 #define bus_space_set_multi_2(t, h, o, val, c) do { \ 358 (void) t; \ 359 __asm __volatile (" \ 360 movl %0,a0 ; \ 361 movl %1,d1 ; \ 362 movl %2,d0 ; \ 363 1: movw d1,a0@ ; \ 364 subql #1,d0 ; \ 365 jne 1b" : \ 366 : \ 367 "r" ((h) + (o)), "g" (val), "g" (c) : \ 368 "a0","d0","d1"); \ 369 } while (0); 370 371 #define bus_space_set_multi_4(t, h, o, val, c) do { \ 372 (void) t; \ 373 __asm __volatile (" \ 374 movl %0,a0 ; \ 375 movl %1,d1 ; \ 376 movl %2,d0 ; \ 377 1: movl d1,a0@ ; \ 378 subql #1,d0 ; \ 379 jne 1b" : \ 380 : \ 381 "r" ((h) + (o)), "g" (val), "g" (c) : \ 382 "a0","d0","d1"); \ 383 } while (0); 384 385 #if 0 /* Cause a link error for bus_space_set_multi_8 */ 386 #define bus_space_set_multi_8 \ 387 !!! bus_space_set_multi_8 unimplemented !!! 388 #endif 389 390 /* 391 * void bus_space_set_region_N __P((bus_space_tag_t tag, 392 * bus_space_handle_t bsh, bus_size_t offset, u_intN_t val, 393 * size_t count)); 394 * 395 * Write `count' 1, 2, 4, or 8 byte value `val' to bus space described 396 * by tag/handle starting at `offset'. 397 */ 398 399 #define bus_space_set_region_1(t, h, o, val, c) do { \ 400 (void) t; \ 401 __asm __volatile (" \ 402 movl %0,a0 ; \ 403 movl %1,d1 ; \ 404 movl %2,d0 ; \ 405 1: movb d1,a0@+ ; \ 406 subql #1,d0 ; \ 407 jne 1b" : \ 408 : \ 409 "r" ((h) + (o)), "g" (val), "g" (c) : \ 410 "a0","d0","d1"); \ 411 } while (0); 412 413 #define bus_space_set_region_2(t, h, o, val, c) do { \ 414 (void) t; \ 415 __asm __volatile (" \ 416 movl %0,a0 ; \ 417 movl %1,d1 ; \ 418 movl %2,d0 ; \ 419 1: movw d1,a0@+ ; \ 420 subql #1,d0 ; \ 421 jne 1b" : \ 422 : \ 423 "r" ((h) + (o)), "g" (val), "g" (c) : \ 424 "a0","d0","d1"); \ 425 } while (0); 426 427 #define bus_space_set_region_4(t, h, o, val, c) do { \ 428 (void) t; \ 429 __asm __volatile (" \ 430 movl %0,a0 ; \ 431 movl %1,d1 ; \ 432 movl %2,d0 ; \ 433 1: movl d1,a0@+ ; \ 434 subql #1,d0 ; \ 435 jne 1b" : \ 436 : \ 437 "r" ((h) + (o)), "g" (val), "g" (c) : \ 438 "a0","d0","d1"); \ 439 } while (0); 440 441 #if 0 /* Cause a link error for bus_space_set_region_8 */ 442 #define bus_space_set_region_8 \ 443 !!! bus_space_set_region_8 unimplemented !!! 444 #endif 445 446 /* 447 * void bus_space_copy_N __P((bus_space_tag_t tag, 448 * bus_space_handle_t bsh1, bus_size_t off1, 449 * bus_space_handle_t bsh2, bus_size_t off2, 450 * size_t count)); 451 * 452 * Copy `count' 1, 2, 4, or 8 byte values from bus space starting 453 * at tag/bsh1/off1 to bus space starting at tag/bsh2/off2. 454 */ 455 456 #define bus_space_copy_1(t, h1, o1, h2, o2, c) do { \ 457 (void) t; \ 458 __asm __volatile (" \ 459 movl %0,a0 ; \ 460 movl %1,a1 ; \ 461 movl %2,d0 ; \ 462 1: movb a0@+,a1@+ ; \ 463 subql #1,d0 ; \ 464 jne 1b" : \ 465 : \ 466 "r" ((h1) + (o1)), "r" ((h2) + (o2)), "g" (c) : \ 467 "a0","a1","d0"); \ 468 } while (0); 469 470 #define bus_space_copy_2(t, h1, o1, h2, o2, c) do { \ 471 (void) t; \ 472 __asm __volatile (" \ 473 movl %0,a0 ; \ 474 movl %1,a1 ; \ 475 movl %2,d0 ; \ 476 1: movw a0@+,a1@+ ; \ 477 subql #1,d0 ; \ 478 jne 1b" : \ 479 : \ 480 "r" ((h1) + (o1)), "r" ((h2) + (o2)), "g" (c) : \ 481 "a0","a1","d0"); \ 482 } while (0); 483 484 #define bus_space_copy_4(t, h1, o1, h2, o2, c) do { \ 485 (void) t; \ 486 __asm __volatile (" \ 487 movl %0,a0 ; \ 488 movl %1,a1 ; \ 489 movl %2,d0 ; \ 490 1: movl a0@+,a1@+ ; \ 491 subql #1,d0 ; \ 492 jne 1b" : \ 493 : \ 494 "r" ((h1) + (o1)), "r" ((h2) + (o2)), "g" (c) : \ 495 "a0","a1","d0"); \ 496 } while (0); 497 498 #if 0 /* Cause a link error for bus_space_copy_8 */ 499 #define bus_space_copy_8 \ 500 !!! bus_space_copy_8 unimplemented !!! 501 #endif 502 503 /* 504 * Bus read/write barrier methods. 505 * 506 * void bus_space_barrier __P((bus_space_tag_t tag, 507 * bus_space_handle_t bsh, bus_size_t offset, 508 * bus_size_t len, int flags)); 509 * 510 * Note: the 680x0 does not currently require barriers, but we must 511 * provide the flags to MI code. 512 */ 513 #define bus_space_barrier(t, h, o, l, f) \ 514 ((void)((void)(t), (void)(h), (void)(o), (void)(l), (void)(f))) 515 #define BUS_BARRIER_READ 0x01 /* force read barrier */ 516 #define BUS_BARRIER_WRITE 0x02 /* force write barrier */ 517 518 /* 519 * Machine-dependent extensions. 520 */ 521 int bus_probe __P((bus_space_tag_t t, bus_space_handle_t bsh, 522 bus_size_t offset, int sz)); 523 524 #endif /* _MAC68K_BUS_H_ */ 525
Indexes created Fri Sep 26 20:09:58 GMT 2025