1 /* $OpenBSD: bus.h,v 1.31 2011/11/14 14:29:53 deraadt Exp $ */ 2 3 /* 4 * Copyright (c) 1998-2004 Michael Shalayeff 5 * 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 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT, 20 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 22 * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 24 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 25 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 26 * THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #ifndef _MACHINE_BUS_H_ 30 #define _MACHINE_BUS_H_ 31 32 #include <machine/cpufunc.h> 33 34 /* addresses in bus space */ 35 typedef u_long bus_addr_t; 36 typedef u_long bus_size_t; 37 38 /* access methods for bus space */ 39 typedef u_long bus_space_handle_t; 40 41 struct hppa_bus_space_tag { 42 void *hbt_cookie; 43 44 int (*hbt_map)(void *v, bus_addr_t addr, bus_size_t size, 45 int flags, bus_space_handle_t *bshp); 46 void (*hbt_unmap)(void *v, bus_space_handle_t bsh, bus_size_t size); 47 int (*hbt_subregion)(void *v, bus_space_handle_t bsh, 48 bus_size_t offset, bus_size_t size, 49 bus_space_handle_t *nbshp); 50 int (*hbt_alloc)(void *v, bus_addr_t rstart, bus_addr_t rend, 51 bus_size_t size, bus_size_t align, bus_size_t boundary, 52 int flags, bus_addr_t *addrp, bus_space_handle_t *bshp); 53 void (*hbt_free)(void *, bus_space_handle_t, bus_size_t); 54 void (*hbt_barrier)(void *v, bus_space_handle_t h, 55 bus_size_t o, bus_size_t l, int op); 56 void *(*hbt_vaddr)(void *v, bus_space_handle_t h); 57 58 u_int8_t (*hbt_r1)(void *, bus_space_handle_t, bus_size_t); 59 u_int16_t (*hbt_r2)(void *, bus_space_handle_t, bus_size_t); 60 u_int32_t (*hbt_r4)(void *, bus_space_handle_t, bus_size_t); 61 u_int64_t (*hbt_r8)(void *, bus_space_handle_t, bus_size_t); 62 63 void (*hbt_w1)(void *, bus_space_handle_t, bus_size_t, u_int8_t); 64 void (*hbt_w2)(void *, bus_space_handle_t, bus_size_t, u_int16_t); 65 void (*hbt_w4)(void *, bus_space_handle_t, bus_size_t, u_int32_t); 66 void (*hbt_w8)(void *, bus_space_handle_t, bus_size_t, u_int64_t); 67 68 void (*hbt_rm_1)(void *v, bus_space_handle_t h, 69 bus_size_t o, u_int8_t *a, bus_size_t c); 70 void (*hbt_rm_2)(void *v, bus_space_handle_t h, 71 bus_size_t o, u_int16_t *a, bus_size_t c); 72 void (*hbt_rm_4)(void *v, bus_space_handle_t h, 73 bus_size_t o, u_int32_t *a, bus_size_t c); 74 void (*hbt_rm_8)(void *v, bus_space_handle_t h, 75 bus_size_t o, u_int64_t *a, bus_size_t c); 76 77 void (*hbt_wm_1)(void *v, bus_space_handle_t h, bus_size_t o, 78 const u_int8_t *a, bus_size_t c); 79 void (*hbt_wm_2)(void *v, bus_space_handle_t h, bus_size_t o, 80 const u_int16_t *a, bus_size_t c); 81 void (*hbt_wm_4)(void *v, bus_space_handle_t h, bus_size_t o, 82 const u_int32_t *a, bus_size_t c); 83 void (*hbt_wm_8)(void *v, bus_space_handle_t h, bus_size_t o, 84 const u_int64_t *a, bus_size_t c); 85 86 void (*hbt_sm_1)(void *v, bus_space_handle_t h, bus_size_t o, 87 u_int8_t vv, bus_size_t c); 88 void (*hbt_sm_2)(void *v, bus_space_handle_t h, bus_size_t o, 89 u_int16_t vv, bus_size_t c); 90 void (*hbt_sm_4)(void *v, bus_space_handle_t h, bus_size_t o, 91 u_int32_t vv, bus_size_t c); 92 void (*hbt_sm_8)(void *v, bus_space_handle_t h, bus_size_t o, 93 u_int64_t vv, bus_size_t c); 94 95 void (*hbt_rrm_2)(void *v, bus_space_handle_t h, 96 bus_size_t o, u_int8_t *a, bus_size_t c); 97 void (*hbt_rrm_4)(void *v, bus_space_handle_t h, 98 bus_size_t o, u_int8_t *a, bus_size_t c); 99 void (*hbt_rrm_8)(void *v, bus_space_handle_t h, 100 bus_size_t o, u_int8_t *a, bus_size_t c); 101 102 void (*hbt_wrm_2)(void *v, bus_space_handle_t h, 103 bus_size_t o, const u_int8_t *a, bus_size_t c); 104 void (*hbt_wrm_4)(void *v, bus_space_handle_t h, 105 bus_size_t o, const u_int8_t *a, bus_size_t c); 106 void (*hbt_wrm_8)(void *v, bus_space_handle_t h, 107 bus_size_t o, const u_int8_t *a, bus_size_t c); 108 109 void (*hbt_rr_1)(void *v, bus_space_handle_t h, 110 bus_size_t o, u_int8_t *a, bus_size_t c); 111 void (*hbt_rr_2)(void *v, bus_space_handle_t h, 112 bus_size_t o, u_int16_t *a, bus_size_t c); 113 void (*hbt_rr_4)(void *v, bus_space_handle_t h, 114 bus_size_t o, u_int32_t *a, bus_size_t c); 115 void (*hbt_rr_8)(void *v, bus_space_handle_t h, 116 bus_size_t o, u_int64_t *a, bus_size_t c); 117 118 void (*hbt_wr_1)(void *v, bus_space_handle_t h, 119 bus_size_t o, const u_int8_t *a, bus_size_t c); 120 void (*hbt_wr_2)(void *v, bus_space_handle_t h, 121 bus_size_t o, const u_int16_t *a, bus_size_t c); 122 void (*hbt_wr_4)(void *v, bus_space_handle_t h, 123 bus_size_t o, const u_int32_t *a, bus_size_t c); 124 void (*hbt_wr_8)(void *v, bus_space_handle_t h, 125 bus_size_t o, const u_int64_t *a, bus_size_t c); 126 127 void (*hbt_rrr_2)(void *v, bus_space_handle_t h, 128 bus_size_t o, u_int8_t *a, bus_size_t c); 129 void (*hbt_rrr_4)(void *v, bus_space_handle_t h, 130 bus_size_t o, u_int8_t *a, bus_size_t c); 131 void (*hbt_rrr_8)(void *v, bus_space_handle_t h, 132 bus_size_t o, u_int8_t *a, bus_size_t c); 133 134 void (*hbt_wrr_2)(void *v, bus_space_handle_t h, 135 bus_size_t o, const u_int8_t *a, bus_size_t c); 136 void (*hbt_wrr_4)(void *v, bus_space_handle_t h, 137 bus_size_t o, const u_int8_t *a, bus_size_t c); 138 void (*hbt_wrr_8)(void *v, bus_space_handle_t h, 139 bus_size_t o, const u_int8_t *a, bus_size_t c); 140 141 void (*hbt_sr_1)(void *v, bus_space_handle_t h, 142 bus_size_t o, u_int8_t vv, bus_size_t c); 143 void (*hbt_sr_2)(void *v, bus_space_handle_t h, 144 bus_size_t o, u_int16_t vv, bus_size_t c); 145 void (*hbt_sr_4)(void *v, bus_space_handle_t h, 146 bus_size_t o, u_int32_t vv, bus_size_t c); 147 void (*hbt_sr_8)(void *v, bus_space_handle_t h, 148 bus_size_t o, u_int64_t vv, bus_size_t c); 149 150 void (*hbt_cp_1)(void *v, bus_space_handle_t h1, bus_size_t o1, 151 bus_space_handle_t h2, bus_size_t o2, bus_size_t c); 152 void (*hbt_cp_2)(void *v, bus_space_handle_t h1, bus_size_t o1, 153 bus_space_handle_t h2, bus_size_t o2, bus_size_t c); 154 void (*hbt_cp_4)(void *v, bus_space_handle_t h1, bus_size_t o1, 155 bus_space_handle_t h2, bus_size_t o2, bus_size_t c); 156 void (*hbt_cp_8)(void *v, bus_space_handle_t h1, bus_size_t o1, 157 bus_space_handle_t h2, bus_size_t o2, bus_size_t c); 158 }; 159 typedef const struct hppa_bus_space_tag *bus_space_tag_t; 160 extern const struct hppa_bus_space_tag hppa_bustag; 161 162 /* flags for bus space map functions */ 163 #define BUS_SPACE_MAP_CACHEABLE 0x0001 164 #define BUS_SPACE_MAP_LINEAR 0x0002 165 #define BUS_SPACE_MAP_READONLY 0x0004 166 #define BUS_SPACE_MAP_PREFETCHABLE 0x0008 167 168 /* bus access routines */ 169 170 #define bus_space_map(t,a,c,ca,hp) \ 171 (((t)->hbt_map)((t)->hbt_cookie,(a),(c),(ca),(hp))) 172 #define bus_space_unmap(t,h,c) \ 173 (((t)->hbt_unmap)((t)->hbt_cookie,(h),(c))) 174 #define bus_space_subregion(t,h,o,c,hp) \ 175 (((t)->hbt_subregion)((t)->hbt_cookie,(h),(o),(c),(hp))) 176 #define bus_space_alloc(t,b,e,c,al,bn,ca,ap,hp) \ 177 (((t)->hbt_alloc)((t)->hbt_cookie,(b),(e),(c),(al),(bn),(ca),(ap),(hp))) 178 #define bus_space_free(t,h,c) \ 179 (((t)->hbt_free)((t)->hbt_cookie,(h),(c))) 180 181 #define bus_space_read_1(t,h,o) (((t)->hbt_r1)((t)->hbt_cookie,(h),(o))) 182 #define bus_space_read_2(t,h,o) (((t)->hbt_r2)((t)->hbt_cookie,(h),(o))) 183 #define bus_space_read_4(t,h,o) (((t)->hbt_r4)((t)->hbt_cookie,(h),(o))) 184 #define bus_space_read_8(t,h,o) (((t)->hbt_r8)((t)->hbt_cookie,(h),(o))) 185 186 #define bus_space_write_1(t,h,o,v) (((t)->hbt_w1)((t)->hbt_cookie,(h),(o),(v))) 187 #define bus_space_write_2(t,h,o,v) (((t)->hbt_w2)((t)->hbt_cookie,(h),(o),(v))) 188 #define bus_space_write_4(t,h,o,v) (((t)->hbt_w4)((t)->hbt_cookie,(h),(o),(v))) 189 #define bus_space_write_8(t,h,o,v) (((t)->hbt_w8)((t)->hbt_cookie,(h),(o),(v))) 190 191 #define bus_space_read_multi_1(t,h,o,a,c) \ 192 (((t)->hbt_rm_1)((t)->hbt_cookie, (h), (o), (a), (c))) 193 #define bus_space_read_multi_2(t,h,o,a,c) \ 194 (((t)->hbt_rm_2)((t)->hbt_cookie, (h), (o), (a), (c))) 195 #define bus_space_read_multi_4(t,h,o,a,c) \ 196 (((t)->hbt_rm_4)((t)->hbt_cookie, (h), (o), (a), (c))) 197 #define bus_space_read_multi_8(t,h,o,a,c) \ 198 (((t)->hbt_rm_8)((t)->hbt_cookie, (h), (o), (a), (c))) 199 200 #define bus_space_write_multi_1(t,h,o,a,c) \ 201 (((t)->hbt_wm_1)((t)->hbt_cookie, (h), (o), (a), (c))) 202 #define bus_space_write_multi_2(t,h,o,a,c) \ 203 (((t)->hbt_wm_2)((t)->hbt_cookie, (h), (o), (a), (c))) 204 #define bus_space_write_multi_4(t,h,o,a,c) \ 205 (((t)->hbt_wm_4)((t)->hbt_cookie, (h), (o), (a), (c))) 206 #define bus_space_write_multi_8(t,h,o,a,c) \ 207 (((t)->hbt_wm_8)((t)->hbt_cookie, (h), (o), (a), (c))) 208 209 #define bus_space_set_multi_1(t,h,o,v,c) \ 210 (((t)->hbt_sm_1)((t)->hbt_cookie, (h), (o), (v), (c))) 211 #define bus_space_set_multi_2(t,h,o,v,c) \ 212 (((t)->hbt_sm_2)((t)->hbt_cookie, (h), (o), (v), (c))) 213 #define bus_space_set_multi_4(t,h,o,v,c) \ 214 (((t)->hbt_sm_4)((t)->hbt_cookie, (h), (o), (v), (c))) 215 #define bus_space_set_multi_8(t,h,o,v,c) \ 216 (((t)->hbt_sm_8)((t)->hbt_cookie, (h), (o), (v), (c))) 217 218 #define bus_space_read_raw_multi_2(t, h, o, a, c) \ 219 (((t)->hbt_rrm_2)((t)->hbt_cookie, (h), (o), (a), (c))) 220 #define bus_space_read_raw_multi_4(t, h, o, a, c) \ 221 (((t)->hbt_rrm_4)((t)->hbt_cookie, (h), (o), (a), (c))) 222 #define bus_space_read_raw_multi_8(t, h, o, a, c) \ 223 (((t)->hbt_rrm_8)((t)->hbt_cookie, (h), (o), (a), (c))) 224 225 #define bus_space_write_raw_multi_2(t, h, o, a, c) \ 226 (((t)->hbt_wrm_2)((t)->hbt_cookie, (h), (o), (a), (c))) 227 #define bus_space_write_raw_multi_4(t, h, o, a, c) \ 228 (((t)->hbt_wrm_4)((t)->hbt_cookie, (h), (o), (a), (c))) 229 #define bus_space_write_raw_multi_8(t, h, o, a, c) \ 230 (((t)->hbt_wrm_8)((t)->hbt_cookie, (h), (o), (a), (c))) 231 232 #define bus_space_read_region_1(t, h, o, a, c) \ 233 (((t)->hbt_rr_1)((t)->hbt_cookie, (h), (o), (a), (c))) 234 #define bus_space_read_region_2(t, h, o, a, c) \ 235 (((t)->hbt_rr_2)((t)->hbt_cookie, (h), (o), (a), (c))) 236 #define bus_space_read_region_4(t, h, o, a, c) \ 237 (((t)->hbt_rr_4)((t)->hbt_cookie, (h), (o), (a), (c))) 238 #define bus_space_read_region_8(t, h, o, a, c) \ 239 (((t)->hbt_rr_8)((t)->hbt_cookie, (h), (o), (a), (c))) 240 241 #define bus_space_write_region_1(t, h, o, a, c) \ 242 (((t)->hbt_wr_1)((t)->hbt_cookie, (h), (o), (a), (c))) 243 #define bus_space_write_region_2(t, h, o, a, c) \ 244 (((t)->hbt_wr_2)((t)->hbt_cookie, (h), (o), (a), (c))) 245 #define bus_space_write_region_4(t, h, o, a, c) \ 246 (((t)->hbt_wr_4)((t)->hbt_cookie, (h), (o), (a), (c))) 247 #define bus_space_write_region_8(t, h, o, a, c) \ 248 (((t)->hbt_wr_8)((t)->hbt_cookie, (h), (o), (a), (c))) 249 250 #define bus_space_read_raw_region_2(t, h, o, a, c) \ 251 (((t)->hbt_rrr_2)((t)->hbt_cookie, (h), (o), (a), (c))) 252 #define bus_space_read_raw_region_4(t, h, o, a, c) \ 253 (((t)->hbt_rrr_4)((t)->hbt_cookie, (h), (o), (a), (c))) 254 #define bus_space_read_raw_region_8(t, h, o, a, c) \ 255 (((t)->hbt_rrr_8)((t)->hbt_cookie, (h), (o), (a), (c))) 256 257 #define bus_space_write_raw_region_2(t, h, o, a, c) \ 258 (((t)->hbt_wrr_2)((t)->hbt_cookie, (h), (o), (a), (c))) 259 #define bus_space_write_raw_region_4(t, h, o, a, c) \ 260 (((t)->hbt_wrr_4)((t)->hbt_cookie, (h), (o), (a), (c))) 261 #define bus_space_write_raw_region_8(t, h, o, a, c) \ 262 (((t)->hbt_wrr_8)((t)->hbt_cookie, (h), (o), (a), (c))) 263 264 #define bus_space_set_region_1(t, h, o, v, c) \ 265 (((t)->hbt_sr_1)((t)->hbt_cookie, (h), (o), (v), (c))) 266 #define bus_space_set_region_2(t, h, o, v, c) \ 267 (((t)->hbt_sr_2)((t)->hbt_cookie, (h), (o), (v), (c))) 268 #define bus_space_set_region_4(t, h, o, v, c) \ 269 (((t)->hbt_sr_4)((t)->hbt_cookie, (h), (o), (v), (c))) 270 #define bus_space_set_region_8(t, h, o, v, c) \ 271 (((t)->hbt_sr_8)((t)->hbt_cookie, (h), (o), (v), (c))) 272 273 #define bus_space_copy_1(t, h1, o1, h2, o2, c) \ 274 (((t)->hbt_cp_1)((t)->hbt_cookie, (h1), (o1), (h2), (o2), (c))) 275 #define bus_space_copy_2(t, h1, o1, h2, o2, c) \ 276 (((t)->hbt_cp_2)((t)->hbt_cookie, (h1), (o1), (h2), (o2), (c))) 277 #define bus_space_copy_4(t, h1, o1, h2, o2, c) \ 278 (((t)->hbt_cp_4)((t)->hbt_cookie, (h1), (o1), (h2), (o2), (c))) 279 #define bus_space_copy_8(t, h1, o1, h2, o2, c) \ 280 (((t)->hbt_cp_8)((t)->hbt_cookie, (h1), (o1), (h2), (o2), (c))) 281 282 #define BUS_SPACE_BARRIER_READ 0x01 283 #define BUS_SPACE_BARRIER_WRITE 0x02 284 285 #define bus_space_barrier(t,h,o,l,op) \ 286 ((t)->hbt_barrier((t)->hbt_cookie, (h), (o), (l), (op))) 287 #define bus_space_vaddr(t,h) \ 288 ((t)->hbt_vaddr((t)->hbt_cookie, (h))) 289 290 #define BUS_DMA_WAITOK 0x0000 /* safe to sleep (pseudo-flag) */ 291 #define BUS_DMA_NOWAIT 0x0001 /* not safe to sleep */ 292 #define BUS_DMA_ALLOCNOW 0x0002 /* perform resource allocation now */ 293 #define BUS_DMA_COHERENT 0x0004 /* hint: map memory DMA coherent */ 294 #define BUS_DMA_BUS1 0x0020 /* placeholders for bus functions... */ 295 #define BUS_DMA_BUS2 0x0040 296 #define BUS_DMA_BUS3 0x0080 297 #define BUS_DMA_BUS4 0x0100 298 #define BUS_DMA_STREAMING 0x0200 /* hint: sequential, unidirectional */ 299 #define BUS_DMA_READ 0x0400 /* mapping is device -> memory only */ 300 #define BUS_DMA_WRITE 0x0800 /* mapping is memory -> device only */ 301 #define BUS_DMA_ZERO 0x1000 /* zero memory in dmamem_alloc */ 302 303 /* Forwards needed by prototypes below. */ 304 struct mbuf; 305 struct proc; 306 struct uio; 307 308 /* Operations performed by bus_dmamap_sync(). */ 309 #define BUS_DMASYNC_POSTREAD 0x01 310 #define BUS_DMASYNC_POSTWRITE 0x02 311 #define BUS_DMASYNC_PREREAD 0x04 312 #define BUS_DMASYNC_PREWRITE 0x08 313 314 typedef const struct hppa_bus_dma_tag *bus_dma_tag_t; 315 typedef struct hppa_bus_dmamap *bus_dmamap_t; 316 317 /* 318 * bus_dma_segment_t 319 * 320 * Describes a single contiguous DMA transaction. Values 321 * are suitable for programming into DMA registers. 322 */ 323 struct hppa_bus_dma_segment { 324 vaddr_t _ds_va; /* needed for syncing */ 325 326 bus_addr_t ds_addr; /* DMA address */ 327 bus_size_t ds_len; /* length of transfer */ 328 }; 329 typedef struct hppa_bus_dma_segment bus_dma_segment_t; 330 331 /* 332 * bus_dma_tag_t 333 * 334 * A machine-dependent opaque type describing the implementation of 335 * DMA for a given bus. 336 */ 337 338 struct hppa_bus_dma_tag { 339 void *_cookie; /* cookie used in the guts */ 340 341 /* 342 * DMA mapping methods. 343 */ 344 int (*_dmamap_create)(void *, bus_size_t, int, 345 bus_size_t, bus_size_t, int, bus_dmamap_t *); 346 void (*_dmamap_destroy)(void *, bus_dmamap_t); 347 int (*_dmamap_load)(void *, bus_dmamap_t, void *, 348 bus_size_t, struct proc *, int); 349 int (*_dmamap_load_mbuf)(void *, bus_dmamap_t, 350 struct mbuf *, int); 351 int (*_dmamap_load_uio)(void *, bus_dmamap_t, 352 struct uio *, int); 353 int (*_dmamap_load_raw)(void *, bus_dmamap_t, 354 bus_dma_segment_t *, int, bus_size_t, int); 355 void (*_dmamap_unload)(void *, bus_dmamap_t); 356 void (*_dmamap_sync)(void *, bus_dmamap_t, bus_addr_t, 357 bus_size_t, int); 358 359 /* 360 * DMA memory utility functions. 361 */ 362 int (*_dmamem_alloc)(void *, bus_size_t, bus_size_t, 363 bus_size_t, bus_dma_segment_t *, int, int *, int); 364 void (*_dmamem_free)(void *, bus_dma_segment_t *, int); 365 int (*_dmamem_map)(void *, bus_dma_segment_t *, 366 int, size_t, caddr_t *, int); 367 void (*_dmamem_unmap)(void *, caddr_t, size_t); 368 paddr_t (*_dmamem_mmap)(void *, bus_dma_segment_t *, 369 int, off_t, int, int); 370 }; 371 372 #define bus_dmamap_create(t, s, n, m, b, f, p) \ 373 (*(t)->_dmamap_create)((t)->_cookie, (s), (n), (m), (b), (f), (p)) 374 #define bus_dmamap_destroy(t, p) \ 375 (*(t)->_dmamap_destroy)((t)->_cookie, (p)) 376 #define bus_dmamap_load(t, m, b, s, p, f) \ 377 (*(t)->_dmamap_load)((t)->_cookie, (m), (b), (s), (p), (f)) 378 #define bus_dmamap_load_mbuf(t, m, b, f) \ 379 (*(t)->_dmamap_load_mbuf)((t)->_cookie, (m), (b), (f)) 380 #define bus_dmamap_load_uio(t, m, u, f) \ 381 (*(t)->_dmamap_load_uio)((t)->_cookie, (m), (u), (f)) 382 #define bus_dmamap_load_raw(t, m, sg, n, s, f) \ 383 (*(t)->_dmamap_load_raw)((t)->_cookie, (m), (sg), (n), (s), (f)) 384 #define bus_dmamap_unload(t, p) \ 385 (*(t)->_dmamap_unload)((t)->_cookie, (p)) 386 #define bus_dmamap_sync(t, p, a, l, o) \ 387 (void)((t)->_dmamap_sync ? \ 388 (*(t)->_dmamap_sync)((t)->_cookie, (p), (a), (l), (o)) : (void)0) 389 390 #define bus_dmamem_alloc(t, s, a, b, sg, n, r, f) \ 391 (*(t)->_dmamem_alloc)((t)->_cookie, (s), (a), (b), (sg), (n), (r), (f)) 392 #define bus_dmamem_free(t, sg, n) \ 393 (*(t)->_dmamem_free)((t)->_cookie, (sg), (n)) 394 #define bus_dmamem_map(t, sg, n, s, k, f) \ 395 (*(t)->_dmamem_map)((t)->_cookie, (sg), (n), (s), (k), (f)) 396 #define bus_dmamem_unmap(t, k, s) \ 397 (*(t)->_dmamem_unmap)((t)->_cookie, (k), (s)) 398 #define bus_dmamem_mmap(t, sg, n, o, p, f) \ 399 (*(t)->_dmamem_mmap)((t)->_cookie, (sg), (n), (o), (p), (f)) 400 401 /* 402 * bus_dmamap_t 403 * 404 * Describes a DMA mapping. 405 */ 406 struct hppa_bus_dmamap { 407 /* 408 * PRIVATE MEMBERS: not for use by machine-independent code. 409 */ 410 bus_size_t _dm_size; /* largest DMA transfer mappable */ 411 int _dm_segcnt; /* number of segs this map can map */ 412 bus_size_t _dm_maxsegsz; /* largest possible segment */ 413 bus_size_t _dm_boundary; /* don't cross this */ 414 int _dm_flags; /* misc. flags */ 415 416 void *_dm_cookie; /* cookie for bus-specific functions */ 417 418 /* 419 * PUBLIC MEMBERS: these are used by machine-independent code. 420 */ 421 bus_size_t dm_mapsize; /* size of the mapping */ 422 int dm_nsegs; /* # valid segments in mapping */ 423 bus_dma_segment_t dm_segs[1]; /* segments; variable length */ 424 }; 425 426 #endif /* _MACHINE_BUS_H_ */ 427