1 /* $OpenBSD: bus.h,v 1.4 2020/06/07 20:08:49 kettenis Exp $ */ 2 /* 3 * Copyright (c) 2003-2004 Opsycon AB Sweden. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #ifndef _MACHINE_BUS_H_ 27 #define _MACHINE_BUS_H_ 28 29 #define CAT(a,b) a##b 30 #define CAT3(a,b,c) a##b##c 31 32 /* 33 * Bus access types. 34 */ 35 struct bus_space; 36 typedef u_long bus_addr_t; 37 typedef u_long bus_size_t; 38 typedef u_long bus_space_handle_t; 39 typedef struct bus_space *bus_space_tag_t; 40 typedef struct bus_space bus_space_t; 41 42 struct bus_space { 43 bus_addr_t bus_base; 44 void *bus_private; 45 uint8_t (*_space_read_1)(bus_space_tag_t , bus_space_handle_t, 46 bus_size_t); 47 void (*_space_write_1)(bus_space_tag_t , bus_space_handle_t, 48 bus_size_t, uint8_t); 49 uint16_t (*_space_read_2)(bus_space_tag_t , bus_space_handle_t, 50 bus_size_t); 51 void (*_space_write_2)(bus_space_tag_t , bus_space_handle_t, 52 bus_size_t, uint16_t); 53 uint32_t (*_space_read_4)(bus_space_tag_t , bus_space_handle_t, 54 bus_size_t); 55 void (*_space_write_4)(bus_space_tag_t , bus_space_handle_t, 56 bus_size_t, uint32_t); 57 uint64_t (*_space_read_8)(bus_space_tag_t , bus_space_handle_t, 58 bus_size_t); 59 void (*_space_write_8)(bus_space_tag_t , bus_space_handle_t, 60 bus_size_t, uint64_t); 61 void (*_space_read_raw_2)(bus_space_tag_t, bus_space_handle_t, 62 bus_addr_t, uint8_t *, bus_size_t); 63 void (*_space_write_raw_2)(bus_space_tag_t, bus_space_handle_t, 64 bus_addr_t, const uint8_t *, bus_size_t); 65 void (*_space_read_raw_4)(bus_space_tag_t, bus_space_handle_t, 66 bus_addr_t, uint8_t *, bus_size_t); 67 void (*_space_write_raw_4)(bus_space_tag_t, bus_space_handle_t, 68 bus_addr_t, const uint8_t *, bus_size_t); 69 void (*_space_read_raw_8)(bus_space_tag_t, bus_space_handle_t, 70 bus_addr_t, uint8_t *, bus_size_t); 71 void (*_space_write_raw_8)(bus_space_tag_t, bus_space_handle_t, 72 bus_addr_t, const uint8_t *, bus_size_t); 73 int (*_space_map)(bus_space_tag_t , bus_addr_t, 74 bus_size_t, int, bus_space_handle_t *); 75 void (*_space_unmap)(bus_space_tag_t, bus_space_handle_t, 76 bus_size_t); 77 int (*_space_subregion)(bus_space_tag_t, bus_space_handle_t, 78 bus_size_t, bus_size_t, bus_space_handle_t *); 79 void * (*_space_vaddr)(bus_space_tag_t, bus_space_handle_t); 80 paddr_t (*_space_mmap)(bus_space_tag_t, bus_addr_t, off_t, 81 int, int); 82 }; 83 84 #define bus_space_read_1(t, h, o) (*(t)->_space_read_1)((t), (h), (o)) 85 #define bus_space_read_2(t, h, o) (*(t)->_space_read_2)((t), (h), (o)) 86 #define bus_space_read_4(t, h, o) (*(t)->_space_read_4)((t), (h), (o)) 87 #define bus_space_read_8(t, h, o) (*(t)->_space_read_8)((t), (h), (o)) 88 89 #define bus_space_write_1(t, h, o, v) (*(t)->_space_write_1)((t), (h), (o), (v)) 90 #define bus_space_write_2(t, h, o, v) (*(t)->_space_write_2)((t), (h), (o), (v)) 91 #define bus_space_write_4(t, h, o, v) (*(t)->_space_write_4)((t), (h), (o), (v)) 92 #define bus_space_write_8(t, h, o, v) (*(t)->_space_write_8)((t), (h), (o), (v)) 93 94 #define bus_space_read_raw_2(t, h, o) \ 95 (*(t)->_space_read_2)((t), (h), (o)) 96 #define bus_space_read_raw_4(t, h, o) \ 97 (*(t)->_space_read_4)((t), (h), (o)) 98 #define bus_space_read_raw_8(t, h, o) \ 99 (*(t)->_space_read_8)((t), (h), (o)) 100 101 #define bus_space_write_raw_2(t, h, o, v) \ 102 (*(t)->_space_write_2)((t), (h), (o), (v)) 103 #define bus_space_write_raw_4(t, h, o, v) \ 104 (*(t)->_space_write_4)((t), (h), (o), (v)) 105 #define bus_space_write_raw_8(t, h, o, v) \ 106 (*(t)->_space_write_8)((t), (h), (o), (v)) 107 108 #define bus_space_read_raw_multi_2(t, h, a, b, l) \ 109 (*(t)->_space_read_raw_2)((t), (h), (a), (b), (l)) 110 #define bus_space_read_raw_multi_4(t, h, a, b, l) \ 111 (*(t)->_space_read_raw_4)((t), (h), (a), (b), (l)) 112 #define bus_space_read_raw_multi_8(t, h, a, b, l) \ 113 (*(t)->_space_read_raw_8)((t), (h), (a), (b), (l)) 114 115 #define bus_space_write_raw_multi_2(t, h, a, b, l) \ 116 (*(t)->_space_write_raw_2)((t), (h), (a), (b), (l)) 117 #define bus_space_write_raw_multi_4(t, h, a, b, l) \ 118 (*(t)->_space_write_raw_4)((t), (h), (a), (b), (l)) 119 #define bus_space_write_raw_multi_8(t, h, a, b, l) \ 120 (*(t)->_space_write_raw_8)((t), (h), (a), (b), (l)) 121 122 #define bus_space_map(t, o, s, c, p) (*(t)->_space_map)((t), (o), (s), (c), (p)) 123 #define bus_space_unmap(t, h, s) (*(t)->_space_unmap)((t), (h), (s)) 124 #define bus_space_subregion(t, h, o, s, p) \ 125 (*(t)->_space_subregion)((t), (h), (o), (s), (p)) 126 127 #define BUS_SPACE_MAP_CACHEABLE 0x01 128 #define BUS_SPACE_MAP_KSEG0 0x02 129 #define BUS_SPACE_MAP_LINEAR 0x04 130 #define BUS_SPACE_MAP_PREFETCHABLE 0x08 131 132 #define bus_space_vaddr(t, h) (*(t)->_space_vaddr)((t), (h)) 133 #define bus_space_mmap(t, a, o, p, f) \ 134 (*(t)->_space_mmap)((t), (a), (o), (p), (f)) 135 136 /*----------------------------------------------------------------------------*/ 137 #define bus_space_read_multi(n,m) \ 138 static __inline void \ 139 CAT(bus_space_read_multi_,n)(bus_space_tag_t bst, bus_space_handle_t bsh, \ 140 bus_size_t o, CAT3(uint,m,_t) *x, size_t cnt) \ 141 { \ 142 while (cnt--) \ 143 *x++ = CAT(bus_space_read_,n)(bst, bsh, o); \ 144 } 145 146 bus_space_read_multi(1,8) 147 bus_space_read_multi(2,16) 148 bus_space_read_multi(4,32) 149 bus_space_read_multi(8,64) 150 151 /*----------------------------------------------------------------------------*/ 152 #define bus_space_read_region(n,m) \ 153 static __inline void \ 154 CAT(bus_space_read_region_,n)(bus_space_tag_t bst, bus_space_handle_t bsh, \ 155 bus_addr_t ba, CAT3(uint,m,_t) *x, size_t cnt) \ 156 { \ 157 while (cnt--) { \ 158 *x++ = CAT(bus_space_read_,n)(bst, bsh, ba); \ 159 ba += (n); \ 160 } \ 161 } 162 163 bus_space_read_region(1,8) 164 bus_space_read_region(2,16) 165 bus_space_read_region(4,32) 166 bus_space_read_region(8,64) 167 168 /*----------------------------------------------------------------------------*/ 169 #define bus_space_read_raw_region(n,m) \ 170 static __inline void \ 171 CAT(bus_space_read_raw_region_,n)(bus_space_tag_t bst, \ 172 bus_space_handle_t bsh, \ 173 bus_addr_t ba, uint8_t *x, size_t cnt) \ 174 { \ 175 cnt >>= ((n) >> 1); \ 176 while (cnt--) { \ 177 CAT(bus_space_read_raw_multi_,n)(bst, bsh, ba, x, (n)); \ 178 ba += (n); \ 179 x += (n); \ 180 } \ 181 } 182 183 bus_space_read_raw_region(2,16) 184 bus_space_read_raw_region(4,32) 185 bus_space_read_raw_region(8,64) 186 187 /*----------------------------------------------------------------------------*/ 188 #define bus_space_write_multi(n,m) \ 189 static __inline void \ 190 CAT(bus_space_write_multi_,n)(bus_space_tag_t bst, bus_space_handle_t bsh, \ 191 bus_size_t o, const CAT3(uint,m,_t) *x, size_t cnt) \ 192 { \ 193 while (cnt--) \ 194 CAT(bus_space_write_,n)(bst, bsh, o, *x++); \ 195 } 196 197 bus_space_write_multi(1,8) 198 bus_space_write_multi(2,16) 199 bus_space_write_multi(4,32) 200 bus_space_write_multi(8,64) 201 202 /*----------------------------------------------------------------------------*/ 203 #define bus_space_write_region(n,m) \ 204 static __inline void \ 205 CAT(bus_space_write_region_,n)(bus_space_tag_t bst, bus_space_handle_t bsh, \ 206 bus_addr_t ba, const CAT3(uint,m,_t) *x, size_t cnt) \ 207 { \ 208 while (cnt--) { \ 209 CAT(bus_space_write_,n)(bst, bsh, ba, *x++); \ 210 ba += (n); \ 211 } \ 212 } 213 214 bus_space_write_region(1,8) 215 bus_space_write_region(2,16) 216 bus_space_write_region(4,32) 217 bus_space_write_region(8,64) 218 219 /*----------------------------------------------------------------------------*/ 220 #define bus_space_write_raw_region(n,m) \ 221 static __inline void \ 222 CAT(bus_space_write_raw_region_,n)(bus_space_tag_t bst, \ 223 bus_space_handle_t bsh, \ 224 bus_addr_t ba, const uint8_t *x, size_t cnt) \ 225 { \ 226 cnt >>= ((n) >> 1); \ 227 while (cnt--) { \ 228 CAT(bus_space_write_raw_multi_,n)(bst, bsh, ba, x, (n)); \ 229 ba += (n); \ 230 x += (n); \ 231 } \ 232 } 233 234 bus_space_write_raw_region(2,16) 235 bus_space_write_raw_region(4,32) 236 bus_space_write_raw_region(8,64) 237 238 /*----------------------------------------------------------------------------*/ 239 #define bus_space_set_region(n,m) \ 240 static __inline void \ 241 CAT(bus_space_set_region_,n)(bus_space_tag_t bst, bus_space_handle_t bsh, \ 242 bus_addr_t ba, CAT3(uint,m,_t) x, size_t cnt) \ 243 { \ 244 while (cnt--) { \ 245 CAT(bus_space_write_,n)(bst, bsh, ba, x); \ 246 ba += (n); \ 247 } \ 248 } 249 250 bus_space_set_region(1,8) 251 bus_space_set_region(2,16) 252 bus_space_set_region(4,32) 253 bus_space_set_region(8,64) 254 255 /*----------------------------------------------------------------------------*/ 256 static __inline void 257 bus_space_copy_1(void *v, bus_space_handle_t h1, bus_size_t o1, 258 bus_space_handle_t h2, bus_size_t o2, bus_size_t c) 259 { 260 char *s = (char *)(h1 + o1); 261 char *d = (char *)(h2 + o2); 262 263 while (c--) 264 *d++ = *s++; 265 } 266 267 268 static __inline void 269 bus_space_copy_2(void *v, bus_space_handle_t h1, bus_size_t o1, 270 bus_space_handle_t h2, bus_size_t o2, bus_size_t c) 271 { 272 short *s = (short *)(h1 + o1); 273 short *d = (short *)(h2 + o2); 274 275 while (c--) 276 *d++ = *s++; 277 } 278 279 static __inline void 280 bus_space_copy_4(void *v, bus_space_handle_t h1, bus_size_t o1, 281 bus_space_handle_t h2, bus_size_t o2, bus_size_t c) 282 { 283 int *s = (int *)(h1 + o1); 284 int *d = (int *)(h2 + o2); 285 286 while (c--) 287 *d++ = *s++; 288 } 289 290 static __inline void 291 bus_space_copy_8(void *v, bus_space_handle_t h1, bus_size_t o1, 292 bus_space_handle_t h2, bus_size_t o2, bus_size_t c) 293 { 294 int64_t *s = (int64_t *)(h1 + o1); 295 int64_t *d = (int64_t *)(h2 + o2); 296 297 while (c--) 298 *d++ = *s++; 299 } 300 301 /*----------------------------------------------------------------------------*/ 302 /* 303 * Bus read/write barrier methods. 304 * 305 * void bus_space_barrier(bus_space_tag_t tag, 306 * bus_space_handle_t bsh, bus_size_t offset, 307 * bus_size_t len, int flags); 308 * 309 */ 310 static inline void 311 bus_space_barrier(bus_space_tag_t t, bus_space_handle_t h, bus_size_t offset, 312 bus_size_t length, int flags) 313 { 314 __asm__ volatile ("eieio" ::: "memory"); 315 } 316 #define BUS_SPACE_BARRIER_READ 0x01 /* force read barrier */ 317 #define BUS_SPACE_BARRIER_WRITE 0x02 /* force write barrier */ 318 319 #define BUS_DMA_WAITOK 0x0000 320 #define BUS_DMA_NOWAIT 0x0001 321 #define BUS_DMA_ALLOCNOW 0x0002 322 #define BUS_DMA_COHERENT 0x0008 323 #define BUS_DMA_BUS1 0x0010 /* placeholders for bus functions... */ 324 #define BUS_DMA_BUS2 0x0020 325 #define BUS_DMA_BUS3 0x0040 326 #define BUS_DMA_BUS4 0x0080 327 #define BUS_DMA_READ 0x0100 /* mapping is device -> memory only */ 328 #define BUS_DMA_WRITE 0x0200 /* mapping is memory -> device only */ 329 #define BUS_DMA_STREAMING 0x0400 /* hint: sequential, unidirectional */ 330 #define BUS_DMA_ZERO 0x0800 /* zero memory in dmamem_alloc */ 331 #define BUS_DMA_NOCACHE 0x1000 332 #define BUS_DMA_64BIT 0x2000 /* device handles 64bit dva */ 333 334 /* Forwards needed by prototypes below. */ 335 struct mbuf; 336 struct proc; 337 struct uio; 338 339 #define BUS_DMASYNC_POSTREAD 0x0001 340 #define BUS_DMASYNC_POSTWRITE 0x0002 341 #define BUS_DMASYNC_PREREAD 0x0004 342 #define BUS_DMASYNC_PREWRITE 0x0008 343 344 typedef struct machine_bus_dma_tag *bus_dma_tag_t; 345 typedef struct machine_bus_dmamap *bus_dmamap_t; 346 347 /* 348 * bus_dma_segment_t 349 * 350 * Describes a single contiguous DMA transaction. Values 351 * are suitable for programming into DMA registers. 352 */ 353 struct machine_bus_dma_segment { 354 bus_addr_t ds_addr; /* DMA address */ 355 bus_size_t ds_len; /* length of transfer */ 356 357 paddr_t _ds_paddr; /* CPU address */ 358 vaddr_t _ds_vaddr; /* CPU address */ 359 }; 360 typedef struct machine_bus_dma_segment bus_dma_segment_t; 361 362 /* 363 * bus_dma_tag_t 364 * 365 * A machine-dependent opaque type describing the implementation of 366 * DMA for a given bus. 367 */ 368 369 struct machine_bus_dma_tag { 370 void *_cookie; /* cookie used in the guts */ 371 int _flags; /* misc. flags */ 372 373 /* 374 * DMA mapping methods. 375 */ 376 int (*_dmamap_create)(bus_dma_tag_t , bus_size_t, int, 377 bus_size_t, bus_size_t, int, bus_dmamap_t *); 378 void (*_dmamap_destroy)(bus_dma_tag_t , bus_dmamap_t); 379 int (*_dmamap_load)(bus_dma_tag_t , bus_dmamap_t, void *, 380 bus_size_t, struct proc *, int); 381 int (*_dmamap_load_mbuf)(bus_dma_tag_t , bus_dmamap_t, 382 struct mbuf *, int); 383 int (*_dmamap_load_uio)(bus_dma_tag_t , bus_dmamap_t, 384 struct uio *, int); 385 int (*_dmamap_load_raw)(bus_dma_tag_t , bus_dmamap_t, 386 bus_dma_segment_t *, int, bus_size_t, int); 387 int (*_dmamap_load_buffer)(bus_dma_tag_t, bus_dmamap_t, void *, 388 bus_size_t, struct proc *, int, paddr_t *, int *, int); 389 void (*_dmamap_unload)(bus_dma_tag_t , bus_dmamap_t); 390 void (*_dmamap_sync)(bus_dma_tag_t , bus_dmamap_t, 391 bus_addr_t, bus_size_t, int); 392 393 /* 394 * DMA memory utility functions. 395 */ 396 int (*_dmamem_alloc)(bus_dma_tag_t, bus_size_t, bus_size_t, 397 bus_size_t, bus_dma_segment_t *, int, int *, int); 398 void (*_dmamem_free)(bus_dma_tag_t, bus_dma_segment_t *, int); 399 int (*_dmamem_map)(bus_dma_tag_t, bus_dma_segment_t *, 400 int, size_t, caddr_t *, int); 401 void (*_dmamem_unmap)(bus_dma_tag_t, caddr_t, size_t); 402 paddr_t (*_dmamem_mmap)(bus_dma_tag_t, bus_dma_segment_t *, 403 int, off_t, int, int); 404 405 /* 406 * internal memory address translation information. 407 */ 408 bus_addr_t _dma_mask; 409 }; 410 411 #define bus_dmamap_create(t, s, n, m, b, f, p) \ 412 (*(t)->_dmamap_create)((t), (s), (n), (m), (b), (f), (p)) 413 #define bus_dmamap_destroy(t, p) \ 414 (*(t)->_dmamap_destroy)((t), (p)) 415 #define bus_dmamap_load(t, m, b, s, p, f) \ 416 (*(t)->_dmamap_load)((t), (m), (b), (s), (p), (f)) 417 #define bus_dmamap_load_mbuf(t, m, b, f) \ 418 (*(t)->_dmamap_load_mbuf)((t), (m), (b), (f)) 419 #define bus_dmamap_load_uio(t, m, u, f) \ 420 (*(t)->_dmamap_load_uio)((t), (m), (u), (f)) 421 #define bus_dmamap_load_raw(t, m, sg, n, s, f) \ 422 (*(t)->_dmamap_load_raw)((t), (m), (sg), (n), (s), (f)) 423 #define bus_dmamap_unload(t, p) \ 424 (*(t)->_dmamap_unload)((t), (p)) 425 #define bus_dmamap_sync(t, p, a, l, o) \ 426 (void)((t)->_dmamap_sync ? \ 427 (*(t)->_dmamap_sync)((t), (p), (a), (l), (o)) : (void)0) 428 429 #define bus_dmamem_alloc(t, s, a, b, sg, n, r, f) \ 430 (*(t)->_dmamem_alloc)((t), (s), (a), (b), (sg), (n), (r), (f)) 431 #define bus_dmamem_free(t, sg, n) \ 432 (*(t)->_dmamem_free)((t), (sg), (n)) 433 #define bus_dmamem_map(t, sg, n, s, k, f) \ 434 (*(t)->_dmamem_map)((t), (sg), (n), (s), (k), (f)) 435 #define bus_dmamem_unmap(t, k, s) \ 436 (*(t)->_dmamem_unmap)((t), (k), (s)) 437 #define bus_dmamem_mmap(t, sg, n, o, p, f) \ 438 (*(t)->_dmamem_mmap)((t), (sg), (n), (o), (p), (f)) 439 440 int _dmamap_create(bus_dma_tag_t, bus_size_t, int, 441 bus_size_t, bus_size_t, int, bus_dmamap_t *); 442 void _dmamap_destroy(bus_dma_tag_t, bus_dmamap_t); 443 int _dmamap_load(bus_dma_tag_t, bus_dmamap_t, void *, 444 bus_size_t, struct proc *, int); 445 int _dmamap_load_mbuf(bus_dma_tag_t, bus_dmamap_t, struct mbuf *, int); 446 int _dmamap_load_uio(bus_dma_tag_t, bus_dmamap_t, struct uio *, int); 447 int _dmamap_load_raw(bus_dma_tag_t, bus_dmamap_t, 448 bus_dma_segment_t *, int, bus_size_t, int); 449 int _dmamap_load_buffer(bus_dma_tag_t, bus_dmamap_t, void *, 450 bus_size_t, struct proc *, int, paddr_t *, int *, int); 451 void _dmamap_unload(bus_dma_tag_t, bus_dmamap_t); 452 void _dmamap_sync(bus_dma_tag_t, bus_dmamap_t, bus_addr_t, 453 bus_size_t, int); 454 455 int _dmamem_alloc(bus_dma_tag_t, bus_size_t, bus_size_t, 456 bus_size_t, bus_dma_segment_t *, int, int *, int); 457 void _dmamem_free(bus_dma_tag_t, bus_dma_segment_t *, int); 458 int _dmamem_map(bus_dma_tag_t, bus_dma_segment_t *, 459 int, size_t, caddr_t *, int); 460 void _dmamem_unmap(bus_dma_tag_t, caddr_t, size_t); 461 paddr_t _dmamem_mmap(bus_dma_tag_t, bus_dma_segment_t *, int, off_t, int, int); 462 int _dmamem_alloc_range(bus_dma_tag_t, bus_size_t, bus_size_t, bus_size_t, 463 bus_dma_segment_t *, int, int *, int, paddr_t, paddr_t); 464 465 /* 466 * bus_dmamap_t 467 * 468 * Describes a DMA mapping. 469 */ 470 struct machine_bus_dmamap { 471 /* 472 * PRIVATE MEMBERS: not for use by machine-independent code. 473 */ 474 bus_size_t _dm_size; /* largest DMA transfer mappable */ 475 int _dm_segcnt; /* number of segs this map can map */ 476 bus_size_t _dm_maxsegsz; /* largest possible segment */ 477 bus_size_t _dm_boundary; /* don't cross this */ 478 int _dm_flags; /* misc. flags */ 479 480 void *_dm_cookie; /* cookie for bus-specific functions */ 481 482 /* 483 * PUBLIC MEMBERS: these are used by machine-independent code. 484 */ 485 bus_size_t dm_mapsize; /* size of the mapping */ 486 int dm_nsegs; /* # valid segments in mapping */ 487 bus_dma_segment_t dm_segs[1]; /* segments; variable length */ 488 }; 489 490 int generic_space_map(bus_space_tag_t, bus_addr_t, bus_size_t, int, 491 bus_space_handle_t *); 492 void generic_space_unmap(bus_space_tag_t, bus_space_handle_t, bus_size_t); 493 int generic_space_region(bus_space_tag_t, bus_space_handle_t, bus_size_t, 494 bus_size_t, bus_space_handle_t *); 495 void *generic_space_vaddr(bus_space_tag_t, bus_space_handle_t); 496 paddr_t generic_space_mmap(bus_space_tag_t, bus_addr_t, off_t, int, int); 497 uint8_t generic_space_read_1(bus_space_tag_t, bus_space_handle_t, bus_size_t); 498 uint16_t generic_space_read_2(bus_space_tag_t, bus_space_handle_t, bus_size_t); 499 uint32_t generic_space_read_4(bus_space_tag_t, bus_space_handle_t, bus_size_t); 500 uint64_t generic_space_read_8(bus_space_tag_t, bus_space_handle_t, bus_size_t); 501 void generic_space_write_1(bus_space_tag_t, bus_space_handle_t, bus_size_t, 502 uint8_t); 503 void generic_space_write_2(bus_space_tag_t, bus_space_handle_t, bus_size_t, 504 uint16_t); 505 void generic_space_write_4(bus_space_tag_t, bus_space_handle_t, bus_size_t, 506 uint32_t); 507 void generic_space_write_8(bus_space_tag_t, bus_space_handle_t, bus_size_t, 508 uint64_t); 509 void generic_space_read_raw_2(bus_space_tag_t, bus_space_handle_t, 510 bus_addr_t, uint8_t *, bus_size_t); 511 void generic_space_write_raw_2(bus_space_tag_t, bus_space_handle_t, 512 bus_addr_t, const uint8_t *, bus_size_t); 513 void generic_space_read_raw_4(bus_space_tag_t, bus_space_handle_t, 514 bus_addr_t, uint8_t *, bus_size_t); 515 void generic_space_write_raw_4(bus_space_tag_t, bus_space_handle_t, 516 bus_addr_t, const uint8_t *, bus_size_t); 517 void generic_space_read_raw_8(bus_space_tag_t, bus_space_handle_t, 518 bus_addr_t, uint8_t *, bus_size_t); 519 void generic_space_write_raw_8(bus_space_tag_t, bus_space_handle_t, 520 bus_addr_t, const uint8_t *, bus_size_t); 521 522 uint16_t little_space_read_2(bus_space_tag_t, bus_space_handle_t, bus_size_t); 523 uint32_t little_space_read_4(bus_space_tag_t, bus_space_handle_t, bus_size_t); 524 uint64_t little_space_read_8(bus_space_tag_t, bus_space_handle_t, bus_size_t); 525 void little_space_write_2(bus_space_tag_t, bus_space_handle_t, bus_size_t, 526 uint16_t); 527 void little_space_write_4(bus_space_tag_t, bus_space_handle_t, bus_size_t, 528 uint32_t); 529 void little_space_write_8(bus_space_tag_t, bus_space_handle_t, bus_size_t, 530 uint64_t); 531 532 #endif /* _MACHINE_BUS_H_ */ 533