1 /* $OpenBSD: bus.h,v 1.6 2009/04/20 00:42:06 oga Exp $ */ 2 /* $NetBSD: bus.h,v 1.1 2006/09/01 21:26:18 uwe Exp $ */ 3 4 /*- 5 * Copyright (c) 1996, 1997 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 10 * NASA Ames Research Center. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * Copyright (c) 1996 Charles M. Hannum. All rights reserved. 36 * Copyright (c) 1996 Christopher G. Demetriou. All rights reserved. 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 1. Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * 2. Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in the 45 * documentation and/or other materials provided with the distribution. 46 * 3. All advertising materials mentioning features or use of this software 47 * must display the following acknowledgement: 48 * This product includes software developed by Christopher G. Demetriou 49 * for the NetBSD Project. 50 * 4. The name of the author may not be used to endorse or promote products 51 * derived from this software without specific prior written permission 52 * 53 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 54 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 55 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 56 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 57 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 58 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 59 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 60 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 61 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 62 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 63 */ 64 65 #ifndef _LANDISK_BUS_H_ 66 #define _LANDISK_BUS_H_ 67 68 #include <sys/types.h> 69 70 typedef u_long bus_addr_t; 71 typedef u_long bus_size_t; 72 73 typedef struct _bus_space *bus_space_tag_t; 74 typedef u_long bus_space_handle_t; 75 76 struct _bus_space { 77 /* cookie */ 78 void *bs_cookie; 79 80 /* mapping/unmapping */ 81 int (*bs_map)(void *, bus_addr_t, bus_size_t, 82 int, bus_space_handle_t *); 83 void (*bs_unmap)(void *, bus_space_handle_t, 84 bus_size_t); 85 int (*bs_subregion)(void *, bus_space_handle_t, 86 bus_size_t, bus_size_t, bus_space_handle_t *); 87 88 /* allocation/deallocation */ 89 int (*bs_alloc)(void *, bus_addr_t, bus_addr_t, 90 bus_size_t, bus_size_t, bus_size_t, int, 91 bus_addr_t *, bus_space_handle_t *); 92 void (*bs_free)(void *, bus_space_handle_t, 93 bus_size_t); 94 95 /* get kernel virtual address */ 96 void * (*bs_vaddr)(void *, bus_space_handle_t); 97 98 /* read (single) */ 99 uint8_t (*bs_r_1)(void *, bus_space_handle_t, 100 bus_size_t); 101 uint16_t (*bs_r_2)(void *, bus_space_handle_t, 102 bus_size_t); 103 uint32_t (*bs_r_4)(void *, bus_space_handle_t, 104 bus_size_t); 105 uint64_t (*bs_r_8)(void *, bus_space_handle_t, 106 bus_size_t); 107 108 /* read multiple */ 109 void (*bs_rm_1)(void *, bus_space_handle_t, 110 bus_size_t, uint8_t *, bus_size_t); 111 void (*bs_rm_2)(void *, bus_space_handle_t, 112 bus_size_t, uint16_t *, bus_size_t); 113 void (*bs_rm_4)(void *, bus_space_handle_t, 114 bus_size_t, uint32_t *, bus_size_t); 115 void (*bs_rm_8)(void *, bus_space_handle_t, 116 bus_size_t, uint64_t *, bus_size_t); 117 118 void (*bs_rrm_2)(void *, bus_space_handle_t, 119 bus_size_t, uint8_t *, bus_size_t); 120 void (*bs_rrm_4)(void *, bus_space_handle_t, 121 bus_size_t, uint8_t *, bus_size_t); 122 void (*bs_rrm_8)(void *, bus_space_handle_t, 123 bus_size_t, uint8_t *, bus_size_t); 124 125 /* read region */ 126 void (*bs_rr_1)(void *, bus_space_handle_t, 127 bus_size_t, uint8_t *, bus_size_t); 128 void (*bs_rr_2)(void *, bus_space_handle_t, 129 bus_size_t, uint16_t *, bus_size_t); 130 void (*bs_rr_4)(void *, bus_space_handle_t, 131 bus_size_t, uint32_t *, bus_size_t); 132 void (*bs_rr_8)(void *, bus_space_handle_t, 133 bus_size_t, uint64_t *, bus_size_t); 134 135 void (*bs_rrr_2)(void *, bus_space_handle_t, 136 bus_size_t, uint8_t *, bus_size_t); 137 void (*bs_rrr_4)(void *, bus_space_handle_t, 138 bus_size_t, uint8_t *, bus_size_t); 139 void (*bs_rrr_8)(void *, bus_space_handle_t, 140 bus_size_t, uint8_t *, bus_size_t); 141 142 /* write (single) */ 143 void (*bs_w_1)(void *, bus_space_handle_t, 144 bus_size_t, uint8_t); 145 void (*bs_w_2)(void *, bus_space_handle_t, 146 bus_size_t, uint16_t); 147 void (*bs_w_4)(void *, bus_space_handle_t, 148 bus_size_t, uint32_t); 149 void (*bs_w_8)(void *, bus_space_handle_t, 150 bus_size_t, uint64_t); 151 152 /* write multiple */ 153 void (*bs_wm_1)(void *, bus_space_handle_t, 154 bus_size_t, const uint8_t *, bus_size_t); 155 void (*bs_wm_2)(void *, bus_space_handle_t, 156 bus_size_t, const uint16_t *, bus_size_t); 157 void (*bs_wm_4)(void *, bus_space_handle_t, 158 bus_size_t, const uint32_t *, bus_size_t); 159 void (*bs_wm_8)(void *, bus_space_handle_t, 160 bus_size_t, const uint64_t *, bus_size_t); 161 162 void (*bs_wrm_2)(void *, bus_space_handle_t, 163 bus_size_t, const uint8_t *, bus_size_t); 164 void (*bs_wrm_4)(void *, bus_space_handle_t, 165 bus_size_t, const uint8_t *, bus_size_t); 166 void (*bs_wrm_8)(void *, bus_space_handle_t, 167 bus_size_t, const uint8_t *, bus_size_t); 168 169 /* write region */ 170 void (*bs_wr_1)(void *, bus_space_handle_t, 171 bus_size_t, const uint8_t *, bus_size_t); 172 void (*bs_wr_2)(void *, bus_space_handle_t, 173 bus_size_t, const uint16_t *, bus_size_t); 174 void (*bs_wr_4)(void *, bus_space_handle_t, 175 bus_size_t, const uint32_t *, bus_size_t); 176 void (*bs_wr_8)(void *, bus_space_handle_t, 177 bus_size_t, const uint64_t *, bus_size_t); 178 179 void (*bs_wrr_2)(void *, bus_space_handle_t, 180 bus_size_t, const uint8_t *, bus_size_t); 181 void (*bs_wrr_4)(void *, bus_space_handle_t, 182 bus_size_t, const uint8_t *, bus_size_t); 183 void (*bs_wrr_8)(void *, bus_space_handle_t, 184 bus_size_t, const uint8_t *, bus_size_t); 185 186 /* set multiple */ 187 void (*bs_sm_1)(void *, bus_space_handle_t, 188 bus_size_t, uint8_t, bus_size_t); 189 void (*bs_sm_2)(void *, bus_space_handle_t, 190 bus_size_t, uint16_t, bus_size_t); 191 void (*bs_sm_4)(void *, bus_space_handle_t, 192 bus_size_t, uint32_t, bus_size_t); 193 void (*bs_sm_8)(void *, bus_space_handle_t, 194 bus_size_t, uint64_t, bus_size_t); 195 196 /* set region */ 197 void (*bs_sr_1)(void *, bus_space_handle_t, 198 bus_size_t, uint8_t, bus_size_t); 199 void (*bs_sr_2)(void *, bus_space_handle_t, 200 bus_size_t, uint16_t, bus_size_t); 201 void (*bs_sr_4)(void *, bus_space_handle_t, 202 bus_size_t, uint32_t, bus_size_t); 203 void (*bs_sr_8)(void *, bus_space_handle_t, 204 bus_size_t, uint64_t, bus_size_t); 205 206 /* copy */ 207 void (*bs_c_1)(void *, bus_space_handle_t, bus_size_t, 208 bus_space_handle_t, bus_size_t, bus_size_t); 209 void (*bs_c_2)(void *, bus_space_handle_t, bus_size_t, 210 bus_space_handle_t, bus_size_t, bus_size_t); 211 void (*bs_c_4)(void *, bus_space_handle_t, bus_size_t, 212 bus_space_handle_t, bus_size_t, bus_size_t); 213 void (*bs_c_8)(void *, bus_space_handle_t, bus_size_t, 214 bus_space_handle_t, bus_size_t, bus_size_t); 215 }; 216 217 #ifdef _KERNEL 218 /* 219 * Utility macros; INTERNAL USE ONLY. 220 */ 221 #define __bs_c(a,b) __CONCAT(a,b) 222 #define __bs_opname(op,size) __bs_c(__bs_c(__bs_c(bs_,op),_),size) 223 224 #define __bs_rs(sz, tn, t, h, o) \ 225 (*(t)->__bs_opname(r,sz))((t)->bs_cookie, h, o) 226 227 #define __bs_ws(sz, tn, t, h, o, v) \ 228 (*(t)->__bs_opname(w,sz))((t)->bs_cookie, h, o, v) 229 230 #define __bs_nonsingle(type, sz, tn, t, h, o, a, c) \ 231 (*(t)->__bs_opname(type,sz))((t)->bs_cookie, h, o, a, c) 232 233 #define __bs_set(type, sz, tn, t, h, o, v, c) \ 234 (*(t)->__bs_opname(type,sz))((t)->bs_cookie, h, o, v, c) 235 236 #define __bs_copy(sz, tn, t, h1, o1, h2, o2, cnt) \ 237 (*(t)->__bs_opname(c,sz))((t)->bs_cookie, h1, o1, h2, o2, cnt) 238 239 240 /* 241 * Mapping and unmapping operations. 242 */ 243 #define bus_space_map(t, a, s, f, hp) \ 244 (*(t)->bs_map)((t)->bs_cookie, (a), (s), (f), (hp)) 245 #define bus_space_unmap(t, h, s) \ 246 (*(t)->bs_unmap)((t)->bs_cookie, (h), (s)) 247 #define bus_space_subregion(t, h, o, s, hp) \ 248 (*(t)->bs_subregion)((t)->bs_cookie, (h), (o), (s), (hp)) 249 250 #endif /* _KERNEL */ 251 252 #define BUS_SPACE_MAP_CACHEABLE 0x01 253 #define BUS_SPACE_MAP_LINEAR 0x02 254 #define BUS_SPACE_MAP_PREFETCHABLE 0x04 255 256 #ifdef _KERNEL 257 /* 258 * Allocation and deallocation operations. 259 */ 260 #define bus_space_alloc(t, rs, re, s, a, b, f, ap, hp) \ 261 (*(t)->bs_alloc)((t)->bs_cookie, (rs), (re), (s), (a), (b), \ 262 (f), (ap), (hp)) 263 #define bus_space_free(t, h, s) \ 264 (*(t)->bs_free)((t)->bs_cookie, (h), (s)) 265 266 /* 267 * Get kernel virtual address for ranges mapped BUS_SPACE_MAP_LINEAR. 268 */ 269 #define bus_space_vaddr(t, h) \ 270 (*(t)->bs_vaddr)((t)->bs_cookie, (h)) 271 272 /* 273 * Bus barrier operations. The SH3 does not currently require 274 * barriers, but we must provide the flags to MI code. 275 */ 276 #define bus_space_barrier(t, h, o, l, f) \ 277 ((void)((void)(t), (void)(h), (void)(o), (void)(l), (void)(f))) 278 279 #define BUS_SPACE_BARRIER_READ 0x01 280 #define BUS_SPACE_BARRIER_WRITE 0x02 281 282 283 /* 284 * Bus read (single) operations. 285 */ 286 #define bus_space_read_1(t, h, o) __bs_rs(1,uint8_t,(t),(h),(o)) 287 #define bus_space_read_2(t, h, o) __bs_rs(2,uint16_t,(t),(h),(o)) 288 #define bus_space_read_4(t, h, o) __bs_rs(4,uint32_t,(t),(h),(o)) 289 #define bus_space_read_8(t, h, o) __bs_rs(8,uint64_t,(t),(h),(o)) 290 291 292 /* 293 * Bus read multiple operations. 294 */ 295 #define bus_space_read_multi_1(t, h, o, a, c) \ 296 __bs_nonsingle(rm,1,uint8_t,(t),(h),(o),(a),(c)) 297 #define bus_space_read_multi_2(t, h, o, a, c) \ 298 __bs_nonsingle(rm,2,uint16_t,(t),(h),(o),(a),(c)) 299 #define bus_space_read_multi_4(t, h, o, a, c) \ 300 __bs_nonsingle(rm,4,uint32_t,(t),(h),(o),(a),(c)) 301 #define bus_space_read_multi_8(t, h, o, a, c) \ 302 __bs_nonsingle(rm,8,uint64_t,(t),(h),(o),(a),(c)) 303 304 #define bus_space_read_raw_multi_2(t, h, o, a, c) \ 305 __bs_nonsingle(rrm,2,uint16_t,(t),(h),(o),(a),(c)) 306 #define bus_space_read_raw_multi_4(t, h, o, a, c) \ 307 __bs_nonsingle(rrm,4,uint32_t,(t),(h),(o),(a),(c)) 308 #define bus_space_read_raw_multi_8(t, h, o, a, c) \ 309 __bs_nonsingle(rrm,8,uint64_t,(t),(h),(o),(a),(c)) 310 311 312 /* 313 * Bus read region operations. 314 */ 315 #define bus_space_read_region_1(t, h, o, a, c) \ 316 __bs_nonsingle(rr,1,uint8_t,(t),(h),(o),(a),(c)) 317 #define bus_space_read_region_2(t, h, o, a, c) \ 318 __bs_nonsingle(rr,2,uint16_t,(t),(h),(o),(a),(c)) 319 #define bus_space_read_region_4(t, h, o, a, c) \ 320 __bs_nonsingle(rr,4,uint32_t,(t),(h),(o),(a),(c)) 321 #define bus_space_read_region_8(t, h, o, a, c) \ 322 __bs_nonsingle(rr,8,uint64_t,(t),(h),(o),(a),(c)) 323 324 #define bus_space_read_raw_region_2(t, h, o, a, c) \ 325 __bs_nonsingle(rrr,2,uint16_t,(t),(h),(o),(a),(c)) 326 #define bus_space_read_raw_region_4(t, h, o, a, c) \ 327 __bs_nonsingle(rrr,4,uint32_t,(t),(h),(o),(a),(c)) 328 #define bus_space_read_raw_region_8(t, h, o, a, c) \ 329 __bs_nonsingle(rrr,8,uint64_t,(t),(h),(o),(a),(c)) 330 331 332 /* 333 * Bus write (single) operations. 334 */ 335 #define bus_space_write_1(t, h, o, v) __bs_ws(1,uint8_t,(t),(h),(o),(v)) 336 #define bus_space_write_2(t, h, o, v) __bs_ws(2,uint16_t,(t),(h),(o),(v)) 337 #define bus_space_write_4(t, h, o, v) __bs_ws(4,uint32_t,(t),(h),(o),(v)) 338 #define bus_space_write_8(t, h, o, v) __bs_ws(8,uint64_t,(t),(h),(o),(v)) 339 340 341 /* 342 * Bus write multiple operations. 343 */ 344 #define bus_space_write_multi_1(t, h, o, a, c) \ 345 __bs_nonsingle(wm,1,uint8_t,(t),(h),(o),(a),(c)) 346 #define bus_space_write_multi_2(t, h, o, a, c) \ 347 __bs_nonsingle(wm,2,uint16_t,(t),(h),(o),(a),(c)) 348 #define bus_space_write_multi_4(t, h, o, a, c) \ 349 __bs_nonsingle(wm,4,uint32_t,(t),(h),(o),(a),(c)) 350 #define bus_space_write_multi_8(t, h, o, a, c) \ 351 __bs_nonsingle(wm,8,uint64_t,(t),(h),(o),(a),(c)) 352 353 #define bus_space_write_raw_multi_2(t, h, o, a, c) \ 354 __bs_nonsingle(wrm,2,uint16_t,(t),(h),(o),(a),(c)) 355 #define bus_space_write_raw_multi_4(t, h, o, a, c) \ 356 __bs_nonsingle(wrm,4,uint32_t,(t),(h),(o),(a),(c)) 357 #define bus_space_write_raw_multi_8(t, h, o, a, c) \ 358 __bs_nonsingle(wrm,8,uint64_t,(t),(h),(o),(a),(c)) 359 360 361 /* 362 * Bus write region operations. 363 */ 364 #define bus_space_write_region_1(t, h, o, a, c) \ 365 __bs_nonsingle(wr,1,uint8_t,(t),(h),(o),(a),(c)) 366 #define bus_space_write_region_2(t, h, o, a, c) \ 367 __bs_nonsingle(wr,2,uint16_t,(t),(h),(o),(a),(c)) 368 #define bus_space_write_region_4(t, h, o, a, c) \ 369 __bs_nonsingle(wr,4,uint32_t,(t),(h),(o),(a),(c)) 370 #define bus_space_write_region_8(t, h, o, a, c) \ 371 __bs_nonsingle(wr,8,uint64_t,(t),(h),(o),(a),(c)) 372 373 #define bus_space_write_raw_region_2(t, h, o, a, c) \ 374 __bs_nonsingle(wrr,2,uint16_t,(t),(h),(o),(a),(c)) 375 #define bus_space_write_raw_region_4(t, h, o, a, c) \ 376 __bs_nonsingle(wrr,4,uint32_t,(t),(h),(o),(a),(c)) 377 #define bus_space_write_raw_region_8(t, h, o, a, c) \ 378 __bs_nonsingle(wrr,8,uint64_t,(t),(h),(o),(a),(c)) 379 380 381 /* 382 * Set multiple operations. 383 */ 384 #define bus_space_set_multi_1(t, h, o, v, c) \ 385 __bs_set(sm,1,uint8_t,(t),(h),(o),(v),(c)) 386 #define bus_space_set_multi_2(t, h, o, v, c) \ 387 __bs_set(sm,2,uint16_t,(t),(h),(o),(v),(c)) 388 #define bus_space_set_multi_4(t, h, o, v, c) \ 389 __bs_set(sm,4,uint32_t,(t),(h),(o),(v),(c)) 390 #define bus_space_set_multi_8(t, h, o, v, c) \ 391 __bs_set(sm,8,uint64_t,(t),(h),(o),(v),(c)) 392 393 394 /* 395 * Set region operations. 396 */ 397 #define bus_space_set_region_1(t, h, o, v, c) \ 398 __bs_set(sr,1,uint8_t,(t),(h),(o),(v),(c)) 399 #define bus_space_set_region_2(t, h, o, v, c) \ 400 __bs_set(sr,2,uint16_t,(t),(h),(o),(v),(c)) 401 #define bus_space_set_region_4(t, h, o, v, c) \ 402 __bs_set(sr,4,uint32_t,(t),(h),(o),(v),(c)) 403 #define bus_space_set_region_8(t, h, o, v, c) \ 404 __bs_set(sr,8,uint64_t,(t),(h),(o),(v),(c)) 405 406 407 /* 408 * Copy region operations. 409 */ 410 #define bus_space_copy_region_1(t, h1, o1, h2, o2, c) \ 411 __bs_copy(1, uint8_t, (t), (h1), (o1), (h2), (o2), (c)) 412 #define bus_space_copy_region_2(t, h1, o1, h2, o2, c) \ 413 __bs_copy(2, uint16_t, (t), (h1), (o1), (h2), (o2), (c)) 414 #define bus_space_copy_region_4(t, h1, o1, h2, o2, c) \ 415 __bs_copy(4, uint32_t, (t), (h1), (o1), (h2), (o2), (c)) 416 #define bus_space_copy_region_8(t, h1, o1, h2, o2, c) \ 417 __bs_copy(8, uint64_t, (t), (h1), (o1), (h2), (o2), (c)) 418 419 #endif /* _KERNEL */ 420 421 /* 422 * Flags used in various bus DMA methods. 423 */ 424 #define BUS_DMA_WAITOK 0x000 /* safe to sleep (pseudo-flag) */ 425 #define BUS_DMA_NOWAIT 0x001 /* not safe to sleep */ 426 #define BUS_DMA_ALLOCNOW 0x002 /* perform resource allocation now */ 427 #define BUS_DMA_COHERENT 0x004 /* map memory to not require sync */ 428 #define BUS_DMA_STREAMING 0x008 /* hint: sequential, unidirectional */ 429 #define BUS_DMA_BUS1 0x010 /* placeholders for bus functions... */ 430 #define BUS_DMA_BUS2 0x020 431 #define BUS_DMA_BUS3 0x040 432 #define BUS_DMA_BUS4 0x080 433 #define BUS_DMA_READ 0x100 /* mapping is device -> memory only */ 434 #define BUS_DMA_WRITE 0x200 /* mapping is memory -> device only */ 435 #define BUS_DMA_NOCACHE 0x400 /* hint: map non-cached memory */ 436 #define BUS_DMA_ZERO 0x800 /* zero memory in dmamem_alloc */ 437 438 /* Forwards needed by prototypes below. */ 439 struct mbuf; 440 struct uio; 441 442 /* 443 * Operations performed by bus_dmamap_sync(). 444 */ 445 #define BUS_DMASYNC_PREREAD 0x01 446 #define BUS_DMASYNC_POSTREAD 0x02 447 #define BUS_DMASYNC_PREWRITE 0x04 448 #define BUS_DMASYNC_POSTWRITE 0x08 449 450 typedef struct _bus_dma_tag *bus_dma_tag_t; 451 typedef struct _bus_dmamap *bus_dmamap_t; 452 453 #define BUS_DMA_TAG_VALID(t) ((t) != (bus_dma_tag_t)0) 454 455 /* 456 * bus_dma_segment_t 457 * 458 * Describes a single contiguous DMA transaction. Values 459 * are suitable for programming into DMA registers. 460 */ 461 struct _bus_dma_segment { 462 bus_addr_t ds_addr; /* DMA address */ 463 bus_size_t ds_len; /* length of transfer */ 464 465 /* private section */ 466 bus_addr_t _ds_vaddr; /* virtual address */ 467 }; 468 typedef struct _bus_dma_segment bus_dma_segment_t; 469 470 /* 471 * bus_dma_tag_t 472 * 473 * A machine-dependent opaque type describing the implementation of 474 * DMA for a given bus. 475 */ 476 477 struct _bus_dma_tag { 478 void *_cookie; /* cookie used in the guts */ 479 480 /* 481 * DMA mapping methods. 482 */ 483 int (*_dmamap_create)(bus_dma_tag_t, bus_size_t, int, 484 bus_size_t, bus_size_t, int, bus_dmamap_t *); 485 void (*_dmamap_destroy)(bus_dma_tag_t, bus_dmamap_t); 486 int (*_dmamap_load)(bus_dma_tag_t, bus_dmamap_t, void *, 487 bus_size_t, struct proc *, int); 488 int (*_dmamap_load_mbuf)(bus_dma_tag_t, bus_dmamap_t, 489 struct mbuf *, int); 490 int (*_dmamap_load_uio)(bus_dma_tag_t, bus_dmamap_t, 491 struct uio *, int); 492 int (*_dmamap_load_raw)(bus_dma_tag_t, bus_dmamap_t, 493 bus_dma_segment_t *, int, bus_size_t, int); 494 void (*_dmamap_unload)(bus_dma_tag_t, bus_dmamap_t); 495 void (*_dmamap_sync)(bus_dma_tag_t, bus_dmamap_t, 496 bus_addr_t, bus_size_t, int); 497 498 /* 499 * DMA memory utility functions. 500 */ 501 int (*_dmamem_alloc)(bus_dma_tag_t, bus_size_t, bus_size_t, 502 bus_size_t, bus_dma_segment_t *, int, int *, int); 503 void (*_dmamem_free)(bus_dma_tag_t, 504 bus_dma_segment_t *, int); 505 int (*_dmamem_map)(bus_dma_tag_t, bus_dma_segment_t *, 506 int, size_t, caddr_t *, int); 507 void (*_dmamem_unmap)(bus_dma_tag_t, caddr_t, size_t); 508 paddr_t (*_dmamem_mmap)(bus_dma_tag_t, bus_dma_segment_t *, 509 int, off_t, int, int); 510 }; 511 512 #define bus_dmamap_create(t, s, n, m, b, f, p) \ 513 (*(t)->_dmamap_create)((t), (s), (n), (m), (b), (f), (p)) 514 #define bus_dmamap_destroy(t, p) \ 515 (*(t)->_dmamap_destroy)((t), (p)) 516 #define bus_dmamap_load(t, m, b, s, p, f) \ 517 (*(t)->_dmamap_load)((t), (m), (b), (s), (p), (f)) 518 #define bus_dmamap_load_mbuf(t, m, b, f) \ 519 (*(t)->_dmamap_load_mbuf)((t), (m), (b), (f)) 520 #define bus_dmamap_load_uio(t, m, u, f) \ 521 (*(t)->_dmamap_load_uio)((t), (m), (u), (f)) 522 #define bus_dmamap_load_raw(t, m, sg, n, s, f) \ 523 (*(t)->_dmamap_load_raw)((t), (m), (sg), (n), (s), (f)) 524 #define bus_dmamap_unload(t, p) \ 525 (*(t)->_dmamap_unload)((t), (p)) 526 #define bus_dmamap_sync(t, m, o, l, op) \ 527 (void)((t)->_dmamap_sync ? \ 528 (*(t)->_dmamap_sync)((t), (m), (o), (l), (op)) : (void)0) 529 530 #define bus_dmamem_alloc(t, s, a, b, sg, n, r, f) \ 531 (*(t)->_dmamem_alloc)((t), (s), (a), (b), (sg), (n), (r), (f)) 532 #define bus_dmamem_free(t, sg, n) \ 533 (*(t)->_dmamem_free)((t), (sg), (n)) 534 #define bus_dmamem_map(t, sg, n, s, k, f) \ 535 (*(t)->_dmamem_map)((t), (sg), (n), (s), (k), (f)) 536 #define bus_dmamem_unmap(t, k, s) \ 537 (*(t)->_dmamem_unmap)((t), (k), (s)) 538 #define bus_dmamem_mmap(t, sg, n, o, p, f) \ 539 (*(t)->_dmamem_mmap)((t), (sg), (n), (o), (p), (f)) 540 541 /* 542 * bus_dmamap_t 543 * 544 * Describes a DMA mapping. 545 */ 546 struct _bus_dmamap { 547 /* 548 * PRIVATE MEMBERS: not for use my machine-independent code. 549 */ 550 bus_size_t _dm_size; /* largest DMA transfer mappable */ 551 int _dm_segcnt; /* number of segs this map can map */ 552 bus_size_t _dm_maxsegsz; /* largest possible segment */ 553 bus_size_t _dm_boundary; /* don't cross this */ 554 int _dm_flags; /* misc. flags */ 555 556 void *_dm_cookie; /* cookie for bus-specific functions */ 557 558 /* 559 * PUBLIC MEMBERS: these are used by machine-independent code. 560 */ 561 bus_size_t dm_mapsize; /* size of the mapping */ 562 int dm_nsegs; /* # valid segments in mapping */ 563 bus_dma_segment_t dm_segs[1]; /* segments; variable length */ 564 }; 565 566 #if defined(_LANDISK_BUS_DMA_PRIVATE) 567 int _bus_dmamap_create(bus_dma_tag_t, bus_size_t, int, bus_size_t, 568 bus_size_t, int, bus_dmamap_t *); 569 void _bus_dmamap_destroy(bus_dma_tag_t, bus_dmamap_t); 570 int _bus_dmamap_load(bus_dma_tag_t, bus_dmamap_t, void *, bus_size_t, 571 struct proc *, int); 572 int _bus_dmamap_load_mbuf(bus_dma_tag_t, bus_dmamap_t, struct mbuf *,int); 573 int _bus_dmamap_load_uio(bus_dma_tag_t, bus_dmamap_t, struct uio *, int); 574 int _bus_dmamap_load_raw(bus_dma_tag_t, bus_dmamap_t, bus_dma_segment_t *, 575 int, bus_size_t, int); 576 void _bus_dmamap_unload(bus_dma_tag_t, bus_dmamap_t); 577 void _bus_dmamap_sync(bus_dma_tag_t, bus_dmamap_t, bus_addr_t, 578 bus_size_t, int); 579 580 int _bus_dmamem_alloc(bus_dma_tag_t tag, bus_size_t size, 581 bus_size_t alignment, bus_size_t boundary, bus_dma_segment_t *segs, 582 int nsegs, int *rsegs, int flags); 583 void _bus_dmamem_free(bus_dma_tag_t tag, bus_dma_segment_t *segs, 584 int nsegs); 585 int _bus_dmamem_map(bus_dma_tag_t tag, bus_dma_segment_t *segs, int nsegs, 586 size_t size, caddr_t *kvap, int flags); 587 void _bus_dmamem_unmap(bus_dma_tag_t tag, caddr_t kva, size_t size); 588 paddr_t _bus_dmamem_mmap(bus_dma_tag_t tag, bus_dma_segment_t *segs, 589 int nsegs, off_t off, int prot, int flags); 590 #endif /* _LANDISK_BUS_DMA_PRIVATE */ 591 592 #endif /* _LANDISK_BUS_H_ */ 593