bus.h revision 1.1.2.3
1 /* $NetBSD: bus.h,v 1.1.2.3 1999/02/13 17:51:43 minoura Exp $ */ 2 3 /*- 4 * Copyright (c) 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 * bus_space(9) and bus_dma(9) interface for NetBSD/x68k. 42 */ 43 44 #ifndef _X68K_BUS_H_ 45 #define _X68K_BUS_H_ 46 47 /* 48 * Bus address and size types 49 */ 50 typedef u_long bus_addr_t; 51 typedef u_long bus_size_t; 52 typedef u_long bus_space_handle_t; 53 54 /* 55 * Bus space descripter 56 */ 57 typedef struct x68k_bus_space *bus_space_tag_t; 58 59 struct x68k_bus_space { 60 #if 0 61 enum { 62 X68K_INTIO_BUS, 63 X68K_PCI_BUS, 64 X68K_NEPTUNE_BUS 65 } x68k_bus_type; 66 #endif 67 68 int (*x68k_bus_space_map) __P(( 69 bus_space_tag_t, 70 bus_addr_t, 71 bus_size_t, 72 int, /* flags */ 73 bus_space_handle_t *)); 74 void (*x68k_bus_space_unmap) __P(( 75 bus_space_tag_t, 76 bus_space_handle_t, 77 bus_size_t)); 78 int (*x68k_bus_space_subregion) __P(( 79 bus_space_tag_t, 80 bus_space_handle_t, 81 bus_size_t, /* offset */ 82 bus_size_t, /* size */ 83 bus_space_handle_t *)); 84 85 int (*x68k_bus_space_alloc) __P(( 86 bus_space_tag_t, 87 bus_addr_t, /* reg_start */ 88 bus_addr_t, /* reg_end */ 89 bus_size_t, 90 bus_size_t, /* alignment */ 91 bus_size_t, /* boundary */ 92 int, /* flags */ 93 bus_addr_t *, 94 bus_space_handle_t *)); 95 void (*x68k_bus_space_free) __P(( 96 bus_space_tag_t, 97 bus_space_handle_t, 98 bus_size_t)); 99 100 #if 0 101 void (*x68k_bus_space_barrier) __P(( 102 bus_space_tag_t, 103 bus_space_handle_t, 104 bus_size_t, /* offset */ 105 bus_size_t, /* length */ 106 int)); /* flags */ 107 #endif 108 109 u_int8_t (*x68k_bus_space_read_1) __P(( 110 bus_space_tag_t, 111 bus_space_handle_t, 112 bus_size_t)); /* offset */ 113 u_int16_t (*x68k_bus_space_read_2) __P(( 114 bus_space_tag_t, 115 bus_space_handle_t, 116 bus_size_t)); /* offset */ 117 u_int32_t (*x68k_bus_space_read_4) __P(( 118 bus_space_tag_t, 119 bus_space_handle_t, 120 bus_size_t)); /* offset */ 121 122 void (*x68k_bus_space_read_multi_1) __P(( 123 bus_space_tag_t, 124 bus_space_handle_t, 125 bus_size_t, /* offset */ 126 u_int8_t *, 127 bus_size_t)); /* count */ 128 void (*x68k_bus_space_read_multi_2) __P(( 129 bus_space_tag_t, 130 bus_space_handle_t, 131 bus_size_t, /* offset */ 132 u_int16_t *, 133 bus_size_t)); /* count */ 134 void (*x68k_bus_space_read_multi_4) __P(( 135 bus_space_tag_t, 136 bus_space_handle_t, 137 bus_size_t, /* offset */ 138 u_int32_t *, 139 bus_size_t)); /* count */ 140 141 void (*x68k_bus_space_read_region_1) __P(( 142 bus_space_tag_t, 143 bus_space_handle_t, 144 bus_size_t, /* offset */ 145 u_int8_t *, 146 bus_size_t)); /* count */ 147 void (*x68k_bus_space_read_region_2) __P(( 148 bus_space_tag_t, 149 bus_space_handle_t, 150 bus_size_t, /* offset */ 151 u_int16_t *, 152 bus_size_t)); /* count */ 153 void (*x68k_bus_space_read_region_4) __P(( 154 bus_space_tag_t, 155 bus_space_handle_t, 156 bus_size_t, /* offset */ 157 u_int32_t *, 158 bus_size_t)); /* count */ 159 160 void (*x68k_bus_space_write_1) __P(( 161 bus_space_tag_t, 162 bus_space_handle_t, 163 bus_size_t, /* offset */ 164 u_int8_t)); 165 void (*x68k_bus_space_write_2) __P(( 166 bus_space_tag_t, 167 bus_space_handle_t, 168 bus_size_t, /* offset */ 169 u_int16_t)); 170 void (*x68k_bus_space_write_4) __P(( 171 bus_space_tag_t, 172 bus_space_handle_t, 173 bus_size_t, /* offset */ 174 u_int32_t)); 175 176 void (*x68k_bus_space_write_multi_1) __P(( 177 bus_space_tag_t, 178 bus_space_handle_t, 179 bus_size_t, /* offset */ 180 u_int8_t *, 181 bus_size_t)); /* count */ 182 void (*x68k_bus_space_write_multi_2) __P(( 183 bus_space_tag_t, 184 bus_space_handle_t, 185 bus_size_t, /* offset */ 186 u_int16_t *, 187 bus_size_t)); /* count */ 188 void (*x68k_bus_space_write_multi_4) __P(( 189 bus_space_tag_t, 190 bus_space_handle_t, 191 bus_size_t, /* offset */ 192 u_int32_t *, 193 bus_size_t)); /* count */ 194 195 void (*x68k_bus_space_write_region_1) __P(( 196 bus_space_tag_t, 197 bus_space_handle_t, 198 bus_size_t, /* offset */ 199 u_int8_t *, 200 bus_size_t)); /* count */ 201 void (*x68k_bus_space_write_region_2) __P(( 202 bus_space_tag_t, 203 bus_space_handle_t, 204 bus_size_t, /* offset */ 205 u_int16_t *, 206 bus_size_t)); /* count */ 207 void (*x68k_bus_space_write_region_4) __P(( 208 bus_space_tag_t, 209 bus_space_handle_t, 210 bus_size_t, /* offset */ 211 u_int32_t *, 212 bus_size_t)); /* count */ 213 214 void (*x68k_bus_space_set_region_1) __P(( 215 bus_space_tag_t, 216 bus_space_handle_t, 217 bus_size_t, /* offset */ 218 u_int8_t, 219 bus_size_t)); /* count */ 220 void (*x68k_bus_space_set_region_2) __P(( 221 bus_space_tag_t, 222 bus_space_handle_t, 223 bus_size_t, /* offset */ 224 u_int16_t, 225 bus_size_t)); /* count */ 226 void (*x68k_bus_space_set_region_4) __P(( 227 bus_space_tag_t, 228 bus_space_handle_t, 229 bus_size_t, /* offset */ 230 u_int32_t, 231 bus_size_t)); /* count */ 232 233 void (*x68k_bus_space_copy_region_1) __P(( 234 bus_space_tag_t, 235 bus_space_handle_t, /* srchandle */ 236 bus_size_t, /* srcoffset */ 237 bus_space_handle_t, /* dsthandle */ 238 bus_size_t, /* dstoffset */ 239 bus_size_t)); /* count */ 240 void (*x68k_bus_space_copy_region_2) __P(( 241 bus_space_tag_t, 242 bus_space_handle_t, /* srchandle */ 243 bus_size_t, /* srcoffset */ 244 bus_space_handle_t, /* dsthandle */ 245 bus_size_t, /* dstoffset */ 246 bus_size_t)); /* count */ 247 void (*x68k_bus_space_copy_region_4) __P(( 248 bus_space_tag_t, 249 bus_space_handle_t, /* srchandle */ 250 bus_size_t, /* srcoffset */ 251 bus_space_handle_t, /* dsthandle */ 252 bus_size_t, /* dstoffset */ 253 bus_size_t)); /* count */ 254 255 struct device *x68k_bus_device; 256 }; 257 258 int x68k_bus_space_alloc __P((bus_space_tag_t, bus_addr_t, bus_addr_t, bus_size_t, bus_size_t, bus_size_t, int, bus_addr_t *, bus_space_handle_t *)); 259 void x68k_bus_space_free __P((bus_space_tag_t, bus_space_handle_t, bus_size_t)); 260 261 u_int8_t x68k_bus_space_read_1 __P((bus_space_tag_t, bus_space_handle_t, bus_size_t)); 262 u_int16_t x68k_bus_space_read_2 __P((bus_space_tag_t, bus_space_handle_t, bus_size_t)); 263 u_int32_t x68k_bus_space_read_4 __P((bus_space_tag_t, bus_space_handle_t, bus_size_t)); 264 265 void x68k_bus_space_read_multi_1 __P((bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int8_t *, bus_size_t)); 266 void x68k_bus_space_read_multi_2 __P((bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int16_t *, bus_size_t)); 267 void x68k_bus_space_read_multi_4 __P((bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t *, bus_size_t)); 268 269 void x68k_bus_space_read_region_1 __P((bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int8_t *, bus_size_t)); 270 void x68k_bus_space_read_region_2 __P((bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int16_t *, bus_size_t)); 271 void x68k_bus_space_read_region_4 __P((bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t *, bus_size_t)); 272 273 void x68k_bus_space_write_1 __P((bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int8_t)); 274 void x68k_bus_space_write_2 __P((bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int16_t)); 275 void x68k_bus_space_write_4 __P((bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t)); 276 277 void x68k_bus_space_write_multi_1 __P((bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int8_t *, bus_size_t)); 278 void x68k_bus_space_write_multi_2 __P((bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int16_t *, bus_size_t)); 279 void x68k_bus_space_write_multi_4 __P((bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t *, bus_size_t)); 280 281 void x68k_bus_space_write_region_1 __P((bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int8_t *, bus_size_t)); 282 void x68k_bus_space_write_region_2 __P((bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int16_t *, bus_size_t)); 283 void x68k_bus_space_write_region_4 __P((bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t *, bus_size_t)); 284 285 void x68k_bus_space_set_region_1 __P((bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int8_t, bus_size_t)); 286 void x68k_bus_space_set_region_2 __P((bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int16_t, bus_size_t)); 287 void x68k_bus_space_set_region_4 __P((bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t, bus_size_t)); 288 289 void x68k_bus_space_copy_region_1 __P((bus_space_tag_t, bus_space_handle_t, bus_size_t, bus_space_handle_t, bus_size_t, bus_size_t)); 290 void x68k_bus_space_copy_region_2 __P((bus_space_tag_t, bus_space_handle_t, bus_size_t, bus_space_handle_t, bus_size_t, bus_size_t)); 291 void x68k_bus_space_copy_region_4 __P((bus_space_tag_t, bus_space_handle_t, bus_size_t, bus_space_handle_t, bus_size_t, bus_size_t)); 292 293 /* 294 * bus_space(9) interface 295 */ 296 297 #define bus_space_map(t,a,s,f,h) \ 298 ((*((t)->x68k_bus_space_map)) ((t),(a),(s),(f),(h))) 299 #define bus_space_unmap(t,h,s) \ 300 ((*((t)->x68k_bus_space_unmap)) ((t),(h),(s))) 301 #define bus_space_subregion(t,h,o,s,p) \ 302 ((*((t)->x68k_bus_space_subregion)) ((t),(h),(o),(s),(p))) 303 #define BUS_SPACE_MAP_CACHEABLE 0x0001 304 #define BUS_SPACE_MAP_LINEAR 0x0002 305 /* 306 * For simpler hadware, many x68k devices are mapped with shifted address 307 * i.e. only on even or odd addresses. 308 */ 309 #define BUS_SPACE_MAP_SHIFTED 0x1001 310 311 #define bus_space_alloc(t,rs,re,s,a,b,f,r,h) \ 312 ((*((t)->x68k_bus_space_alloc)) ((t),(rs),(re),(s),(a),(b),(f),(r),(h))) 313 #define bus_space_free(t,h,s) \ 314 ((*((t)->x68k_bus_space_free)) ((t),(h),(s))) 315 316 /* 317 * Note: the 680x0 does not currently require barriers, but we must 318 * provide the flags to MI code. 319 */ 320 #define bus_space_barrier(t, h, o, l, f) \ 321 ((void)((void)(t), (void)(h), (void)(o), (void)(l), (void)(f))) 322 #define BUS_SPACE_BARRIER_READ 0x01 /* force read barrier */ 323 #define BUS_SPACE_BARRIER_WRITE 0x02 /* force write barrier */ 324 325 #define bus_space_read_1(t,h,o) \ 326 ((*((t)->x68k_bus_space_read_1)) ((t),(h),(o))) 327 #define bus_space_read_2(t,h,o) \ 328 ((*((t)->x68k_bus_space_read_2)) ((t),(h),(o))) 329 #define bus_space_read_4(t,h,o) \ 330 ((*((t)->x68k_bus_space_read_4)) ((t),(h),(o))) 331 332 #define bus_space_read_multi_1(t,h,o,p,c) \ 333 ((*((t)->x68k_bus_space_read_multi_1)) ((t),(h),(o),(p),(c))) 334 #define bus_space_read_multi_2(t,h,o,p,c) \ 335 ((*((t)->x68k_bus_space_read_multi_2)) ((t),(h),(o),(p),(c))) 336 #define bus_space_read_multi_4(t,h,o,p,c) \ 337 ((*((t)->x68k_bus_space_read_multi_4)) ((t),(h),(o),(p),(c))) 338 339 #define bus_space_read_region_1(t,h,o,p,c) \ 340 ((*((t)->x68k_bus_space_read_region_1)) ((t),(h),(o),(p),(c))) 341 #define bus_space_read_region_2(t,h,o,p,c) \ 342 ((*((t)->x68k_bus_space_read_region_2)) ((t),(h),(o),(p),(c))) 343 #define bus_space_read_region_4(t,h,o,p,c) \ 344 ((*((t)->x68k_bus_space_read_region_4)) ((t),(h),(o),(p),(c))) 345 346 #define bus_space_write_1(t,h,o,v) \ 347 ((*((t)->x68k_bus_space_write_1)) ((t),(h),(o),(v))) 348 #define bus_space_write_2(t,h,o,v) \ 349 ((*((t)->x68k_bus_space_write_2)) ((t),(h),(o),(v))) 350 #define bus_space_write_4(t,h,o,v) \ 351 ((*((t)->x68k_bus_space_write_4)) ((t),(h),(o),(v))) 352 353 #define bus_space_write_multi_1(t,h,o,p,c) \ 354 ((*((t)->x68k_bus_space_write_multi_1)) ((t),(h),(o),(p),(c))) 355 #define bus_space_write_multi_2(t,h,o,p,c) \ 356 ((*((t)->x68k_bus_space_write_multi_2)) ((t),(h),(o),(p),(c))) 357 #define bus_space_write_multi_4(t,h,o,p,c) \ 358 ((*((t)->x68k_bus_space_write_multi_4)) ((t),(h),(o),(p),(c))) 359 360 #define bus_space_write_region_1(t,h,o,p,c) \ 361 ((*((t)->x68k_bus_space_write_region_1)) ((t),(h),(o),(p),(c))) 362 #define bus_space_write_region_2(t,h,o,p,c) \ 363 ((*((t)->x68k_bus_space_write_region_2)) ((t),(h),(o),(p),(c))) 364 #define bus_space_write_region_4(t,h,o,p,c) \ 365 ((*((t)->x68k_bus_space_write_region_4)) ((t),(h),(o),(p),(c))) 366 367 #define bus_space_set_region_1(t,h,o,v,c) \ 368 ((*((t)->x68k_bus_space_set_region_1)) ((t),(h),(o),(v),(c))) 369 #define bus_space_set_region_2(t,h,o,v,c) \ 370 ((*((t)->x68k_bus_space_set_region_2)) ((t),(h),(o),(v),(c))) 371 #define bus_space_set_region_4(t,h,o,v,c) \ 372 ((*((t)->x68k_bus_space_set_region_4)) ((t),(h),(o),(v),(c))) 373 374 #define bus_space_copy_region_1(t,sh,so,dh,do,c) \ 375 ((*((t)->x68k_bus_space_copy_region_1)) ((t),(sh),(so),(dh),(do),(c))) 376 #define bus_space_copy_region_2(t,sh,so,dh,do,c) \ 377 ((*((t)->x68k_bus_space_copy_region_2)) ((t),(sh),(so),(dh),(do),(c))) 378 #define bus_space_copy_region_4(t,sh,so,dh,do,c) \ 379 ((*((t)->x68k_bus_space_copy_region_4)) ((t),(sh),(so),(dh),(do),(c))) 380 381 382 /* 383 * DMA segment 384 */ 385 struct x68k_bus_dma_segment { 386 bus_addr_t ds_addr; 387 bus_size_t ds_len; 388 }; 389 typedef struct x68k_bus_dma_segment bus_dma_segment_t; 390 391 /* 392 * DMA descriptor 393 */ 394 /* Forwards needed by prototypes below. */ 395 struct mbuf; 396 struct uio; 397 398 typedef struct x68k_bus_dma *bus_dma_tag_t; 399 typedef struct x68k_bus_dmamap *bus_dmamap_t; 400 struct x68k_bus_dma { 401 /* 402 * The `bounce threshold' is checked while we are loading 403 * the DMA map. If the physical address of the segment 404 * exceeds the threshold, an error will be returned. The 405 * caller can then take whatever action is necessary to 406 * bounce the transfer. If this value is 0, it will be 407 * ignored. 408 */ 409 bus_addr_t _bounce_thresh; 410 411 /* 412 * DMA mapping methods. 413 */ 414 int (*x68k_dmamap_create) __P((bus_dma_tag_t, bus_size_t, int, 415 bus_size_t, bus_size_t, int, bus_dmamap_t *)); 416 void (*x68k_dmamap_destroy) __P((bus_dma_tag_t, bus_dmamap_t)); 417 int (*x68k_dmamap_load) __P((bus_dma_tag_t, bus_dmamap_t, void *, 418 bus_size_t, struct proc *, int)); 419 int (*x68k_dmamap_load_mbuf) __P((bus_dma_tag_t, bus_dmamap_t, 420 struct mbuf *, int)); 421 int (*x68k_dmamap_load_uio) __P((bus_dma_tag_t, bus_dmamap_t, 422 struct uio *, int)); 423 int (*x68k_dmamap_load_raw) __P((bus_dma_tag_t, bus_dmamap_t, 424 bus_dma_segment_t *, int, bus_size_t, int)); 425 void (*x68k_dmamap_unload) __P((bus_dma_tag_t, bus_dmamap_t)); 426 void (*x68k_dmamap_sync) __P((bus_dma_tag_t, bus_dmamap_t, 427 bus_addr_t, bus_size_t, int)); 428 429 /* 430 * DMA memory utility functions. 431 */ 432 int (*x68k_dmamem_alloc) __P((bus_dma_tag_t, bus_size_t, bus_size_t, 433 bus_size_t, bus_dma_segment_t *, int, int *, int)); 434 void (*x68k_dmamem_free) __P((bus_dma_tag_t, 435 bus_dma_segment_t *, int)); 436 int (*x68k_dmamem_map) __P((bus_dma_tag_t, bus_dma_segment_t *, 437 int, size_t, caddr_t *, int)); 438 void (*x68k_dmamem_unmap) __P((bus_dma_tag_t, caddr_t, size_t)); 439 int (*x68k_dmamem_mmap) __P((bus_dma_tag_t, bus_dma_segment_t *, 440 int, int, int, int)); 441 }; 442 443 /* 444 * bus_dmamap_t 445 * 446 * Describes a DMA mapping. 447 */ 448 struct x68k_bus_dmamap { 449 /* 450 * PRIVATE MEMBERS: not for use my machine-independent code. 451 */ 452 bus_size_t x68k_dm_size; /* largest DMA transfer mappable */ 453 int x68k_dm_segcnt; /* number of segs this map can map */ 454 bus_size_t x68k_dm_maxsegsz; /* largest possible segment */ 455 bus_size_t x68k_dm_boundary; /* don't cross this */ 456 bus_addr_t x68k_dm_bounce_thresh; /* bounce threshold */ 457 int x68k_dm_flags; /* misc. flags */ 458 459 void *x68k_dm_cookie; /* cookie for bus-specific functions */ 460 461 /* 462 * PUBLIC MEMBERS: these are used by machine-independent code. 463 */ 464 bus_size_t dm_mapsize; /* size of the mapping */ 465 int dm_nsegs; /* # valid segments in mapping */ 466 bus_dma_segment_t dm_segs[1]; /* segments; variable length */ 467 }; 468 469 int x68k_bus_dmamap_create __P((bus_dma_tag_t, bus_size_t, int, bus_size_t, 470 bus_size_t, int, bus_dmamap_t *)); 471 void x68k_bus_dmamap_destroy __P((bus_dma_tag_t, bus_dmamap_t)); 472 int x68k_bus_dmamap_load __P((bus_dma_tag_t, bus_dmamap_t, void *, 473 bus_size_t, struct proc *, int)); 474 int x68k_bus_dmamap_load_mbuf __P((bus_dma_tag_t, bus_dmamap_t, 475 struct mbuf *, int)); 476 int x68k_bus_dmamap_load_uio __P((bus_dma_tag_t, bus_dmamap_t, 477 struct uio *, int)); 478 int x68k_bus_dmamap_load_raw __P((bus_dma_tag_t, bus_dmamap_t, 479 bus_dma_segment_t *, int, bus_size_t, int)); 480 void x68k_bus_dmamap_unload __P((bus_dma_tag_t, bus_dmamap_t)); 481 void x68k_bus_dmamap_sync __P((bus_dma_tag_t, bus_dmamap_t, bus_addr_t, 482 bus_size_t, int)); 483 484 int x68k_bus_dmamem_alloc __P((bus_dma_tag_t tag, bus_size_t size, 485 bus_size_t alignment, bus_size_t boundary, 486 bus_dma_segment_t *segs, int nsegs, int *rsegs, int flags)); 487 void x68k_bus_dmamem_free __P((bus_dma_tag_t tag, bus_dma_segment_t *segs, 488 int nsegs)); 489 int x68k_bus_dmamem_map __P((bus_dma_tag_t tag, bus_dma_segment_t *segs, 490 int nsegs, size_t size, caddr_t *kvap, int flags)); 491 void x68k_bus_dmamem_unmap __P((bus_dma_tag_t tag, caddr_t kva, 492 size_t size)); 493 int x68k_bus_dmamem_mmap __P((bus_dma_tag_t tag, bus_dma_segment_t *segs, 494 int nsegs, int off, int prot, int flags)); 495 496 int x68k_bus_dmamap_load_buffer __P((bus_dmamap_t, void *, 497 bus_size_t buflen, struct proc *, int, paddr_t *, int *, int)); 498 int x68k_bus_dmamem_alloc_range __P((bus_dma_tag_t tag, bus_size_t size, 499 bus_size_t alignment, bus_size_t boundary, 500 bus_dma_segment_t *segs, int nsegs, int *rsegs, int flags, 501 paddr_t low, paddr_t high)); 502 503 #define bus_dmamap_create(t,s,n,m,b,f,p) \ 504 ((*((t)->x68k_dmamap_create)) ((t),(s),(n),(m),(b),(f),(p))) 505 #define bus_dmamap_destroy(t,p) \ 506 ((*((t)->x68k_dmamap_destroy)) ((t),(p))) 507 #define bus_dmamap_load(t,m,b,s,p,f) \ 508 ((*((t)->x68k_dmamap_load)) ((t),(m),(b),(s),(p),(f))) 509 #define bus_dmamap_load_mbuf(t,m,b,f) \ 510 ((*((t)->x68k_dmamap_load_mbuf)) ((t),(m),(b),(f))) 511 #define bus_dmamap_load_uio(t,m,u,f) \ 512 ((*((t)->x68k_dmamap_load_uio)) ((t),(m),(u),(f))) 513 #define bus_dmamap_load_raw(t,m,sg,n,s,f) \ 514 ((*((t)->x68k_dmamap_load_raw)) ((t),(m),(sg),(n),(s),(f))) 515 #define bus_dmamap_unload(t,p) \ 516 ((*((t)->x68k_dmamap_unload)) ((t),(p))) 517 #define bus_dmamap_sync(t,p,o,l,ops) \ 518 ((*((t)->x68k_dmamap_sync)) ((t),(p),(o),(l),(ops))) 519 520 #define bus_dmamem_alloc(t,s,a,b,sg,n,r,f) \ 521 ((*((t)->x68k_dmamem_alloc)) ((t),(s),(a),(b),(sg),(n),(r),(f))) 522 #define bus_dmamem_free(t,sg,n) \ 523 ((*((t)->x68k_dmamem_free)) ((t),(sg),(n))) 524 #define bus_dmamem_map(t,sg,n,s,k,f) \ 525 ((*((t)->x68k_dmamem_map)) ((t),(sg),(n),(s),(k),(f))) 526 #define bus_dmamem_unmap(t,k,s) \ 527 ((*((t)->x68k_dmamem_unmap)) ((t),(k),(s))) 528 #define bus_dmamem_mmap(t,sg,n,o,p,f) \ 529 ((*((t)->x68k_dmamem_mmap)) ((t),(sg),(n),(o),(p),(f))) 530 531 /* 532 * Flags used in various bus DMA methods. 533 */ 534 #define BUS_DMA_WAITOK 0x00 /* safe to sleep (pseudo-flag) */ 535 #define BUS_DMA_NOWAIT 0x01 /* not safe to sleep */ 536 #define BUS_DMA_ALLOCNOW 0x02 /* perform resource allocation now */ 537 #define BUS_DMA_COHERENT 0x04 /* hint: map memory DMA coherent */ 538 #define BUS_DMA_BUS1 0x10 /* placeholders for bus functions... */ 539 #define BUS_DMA_BUS2 0x20 540 #define BUS_DMA_BUS3 0x40 541 #define BUS_DMA_BUS4 0x80 542 543 /* 544 * Operations performed by bus_dmamap_sync(). 545 */ 546 #define BUS_DMASYNC_PREREAD 0x01 /* pre-read synchronization */ 547 #define BUS_DMASYNC_POSTREAD 0x02 /* post-read synchronization */ 548 #define BUS_DMASYNC_PREWRITE 0x04 /* pre-write synchronization */ 549 #define BUS_DMASYNC_POSTWRITE 0x08 /* post-write synchronization */ 550 551 #endif /* _X68K_BUS_H_ */ 552
Indexes created Sat Oct 25 10:09:55 GMT 2025