sys/arch/hp700/include/bus.h

   1 /*      $NetBSD: bus.h,v 1.15 2009/07/24 06:57:53 skrll Exp $   */
   2
   3 /*      $OpenBSD: bus.h,v 1.13 2001/07/30 14:15:59 art Exp $    */
   4
   5 /*
   6  * Copyright (c) 1998-2004 Michael Shalayeff
   7  * All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  21  * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT,
  22  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  23  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  24  * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  26  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  27  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  28  * THE POSSIBILITY OF SUCH DAMAGE.
  29  */
  30
  31
  32 #ifndef _MACHINE_BUS_H_
  33 #define _MACHINE_BUS_H_
  34
  35 #include <machine/cpufunc.h>
  36
  37 /*
  38  * Bus address and size types.
  39  */
  40 typedef u_long bus_addr_t;
  41 typedef u_long bus_size_t;
  42 typedef u_long bus_space_handle_t;
  43
  44 struct hppa_bus_space_tag {
  45         void *hbt_cookie;
  46
  47         int  (*hbt_map)(void *v, bus_addr_t addr, bus_size_t size,
  48                              int flags, bus_space_handle_t *bshp);
  49         void (*hbt_unmap)(void *v, bus_space_handle_t bsh,
  50                                bus_size_t size);
  51         int  (*hbt_subregion)(void *v, bus_space_handle_t bsh,
  52                                    bus_size_t offset, bus_size_t size,
  53                                    bus_space_handle_t *nbshp);
  54         int  (*hbt_alloc)(void *v, bus_addr_t rstart, bus_addr_t rend,
  55                                bus_size_t size, bus_size_t align,
  56                                bus_size_t boundary, int flags,
  57                                bus_addr_t *addrp, bus_space_handle_t *bshp);
  58         void (*hbt_free)(void *, bus_space_handle_t, bus_size_t);
  59         void (*hbt_barrier)(void *v, bus_space_handle_t h,
  60                                  bus_size_t o, bus_size_t l, int op);
  61         void *(*hbt_vaddr)(void *, bus_space_handle_t);
  62         paddr_t (*hbt_mmap)(void *, bus_addr_t, off_t, int, int);
  63
  64         uint8_t  (*hbt_r1)(void *, bus_space_handle_t, bus_size_t);
  65         uint16_t (*hbt_r2)(void *, bus_space_handle_t, bus_size_t);
  66         uint32_t (*hbt_r4)(void *, bus_space_handle_t, bus_size_t);
  67         uint64_t (*hbt_r8)(void *, bus_space_handle_t, bus_size_t);
  68
  69         void (*hbt_w1)(void *, bus_space_handle_t, bus_size_t, uint8_t);
  70         void (*hbt_w2)(void *, bus_space_handle_t, bus_size_t, uint16_t);
  71         void (*hbt_w4)(void *, bus_space_handle_t, bus_size_t, uint32_t);
  72         void (*hbt_w8)(void *, bus_space_handle_t, bus_size_t, uint64_t);
  73
  74         void (*hbt_rm_1)(void *v, bus_space_handle_t h,
  75                               bus_size_t o, uint8_t *a, bus_size_t c);
  76         void (*hbt_rm_2)(void *v, bus_space_handle_t h,
  77                               bus_size_t o, uint16_t *a, bus_size_t c);
  78         void (*hbt_rm_4)(void *v, bus_space_handle_t h,
  79                               bus_size_t o, uint32_t *a, bus_size_t c);
  80         void (*hbt_rm_8)(void *v, bus_space_handle_t h,
  81                               bus_size_t o, uint64_t *a, bus_size_t c);
  82
  83         void (*hbt_wm_1)(void *v, bus_space_handle_t h, bus_size_t o,
  84                               const uint8_t *a, bus_size_t c);
  85         void (*hbt_wm_2)(void *v, bus_space_handle_t h, bus_size_t o,
  86                               const uint16_t *a, bus_size_t c);
  87         void (*hbt_wm_4)(void *v, bus_space_handle_t h, bus_size_t o,
  88                               const uint32_t *a, bus_size_t c);
  89         void (*hbt_wm_8)(void *v, bus_space_handle_t h, bus_size_t o,
  90                               const uint64_t *a, bus_size_t c);
  91
  92         void (*hbt_sm_1)(void *v, bus_space_handle_t h, bus_size_t o,
  93                               uint8_t  vv, bus_size_t c);
  94         void (*hbt_sm_2)(void *v, bus_space_handle_t h, bus_size_t o,
  95                               uint16_t vv, bus_size_t c);
  96         void (*hbt_sm_4)(void *v, bus_space_handle_t h, bus_size_t o,
  97                               uint32_t vv, bus_size_t c);
  98         void (*hbt_sm_8)(void *v, bus_space_handle_t h, bus_size_t o,
  99                               uint64_t vv, bus_size_t c);
 100
 101         void (*hbt_rrm_2)(void *v, bus_space_handle_t h,
 102                                bus_size_t o, uint16_t *a, bus_size_t c);
 103         void (*hbt_rrm_4)(void *v, bus_space_handle_t h,
 104                                bus_size_t o, uint32_t *a, bus_size_t c);
 105         void (*hbt_rrm_8)(void *v, bus_space_handle_t h,
 106                                bus_size_t o, uint64_t *a, bus_size_t c);
 107
 108         void (*hbt_wrm_2)(void *v, bus_space_handle_t h,
 109                                bus_size_t o, const uint16_t *a, bus_size_t c);
 110         void (*hbt_wrm_4)(void *v, bus_space_handle_t h,
 111                                bus_size_t o, const uint32_t *a, bus_size_t c);
 112         void (*hbt_wrm_8)(void *v, bus_space_handle_t h,
 113                                bus_size_t o, const uint64_t *a, bus_size_t c);
 114
 115         void (*hbt_rr_1)(void *v, bus_space_handle_t h,
 116                               bus_size_t o, uint8_t *a, bus_size_t c);
 117         void (*hbt_rr_2)(void *v, bus_space_handle_t h,
 118                               bus_size_t o, uint16_t *a, bus_size_t c);
 119         void (*hbt_rr_4)(void *v, bus_space_handle_t h,
 120                               bus_size_t o, uint32_t *a, bus_size_t c);
 121         void (*hbt_rr_8)(void *v, bus_space_handle_t h,
 122                               bus_size_t o, uint64_t *a, bus_size_t c);
 123
 124         void (*hbt_wr_1)(void *v, bus_space_handle_t h,
 125                               bus_size_t o, const uint8_t *a, bus_size_t c);
 126         void (*hbt_wr_2)(void *v, bus_space_handle_t h,
 127                               bus_size_t o, const uint16_t *a, bus_size_t c);
 128         void (*hbt_wr_4)(void *v, bus_space_handle_t h,
 129                               bus_size_t o, const uint32_t *a, bus_size_t c);
 130         void (*hbt_wr_8)(void *v, bus_space_handle_t h,
 131                               bus_size_t o, const uint64_t *a, bus_size_t c);
 132
 133         void (*hbt_rrr_2)(void *v, bus_space_handle_t h,
 134                                bus_size_t o, uint16_t *a, bus_size_t c);
 135         void (*hbt_rrr_4)(void *v, bus_space_handle_t h,
 136                                bus_size_t o, uint32_t *a, bus_size_t c);
 137         void (*hbt_rrr_8)(void *v, bus_space_handle_t h,
 138                                bus_size_t o, uint64_t *a, bus_size_t c);
 139
 140         void (*hbt_wrr_2)(void *v, bus_space_handle_t h,
 141                                bus_size_t o, const uint16_t *a, bus_size_t c);
 142         void (*hbt_wrr_4)(void *v, bus_space_handle_t h,
 143                                bus_size_t o, const uint32_t *a, bus_size_t c);
 144         void (*hbt_wrr_8)(void *v, bus_space_handle_t h,
 145                                bus_size_t o, const uint64_t *a, bus_size_t c);
 146
 147         void (*hbt_sr_1)(void *v, bus_space_handle_t h,
 148                                bus_size_t o, uint8_t vv, bus_size_t c);
 149         void (*hbt_sr_2)(void *v, bus_space_handle_t h,
 150                                bus_size_t o, uint16_t vv, bus_size_t c);
 151         void (*hbt_sr_4)(void *v, bus_space_handle_t h,
 152                                bus_size_t o, uint32_t vv, bus_size_t c);
 153         void (*hbt_sr_8)(void *v, bus_space_handle_t h,
 154                                bus_size_t o, uint64_t vv, bus_size_t c);
 155
 156         void (*hbt_cp_1)(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         void (*hbt_cp_2)(void *v, bus_space_handle_t h1, bus_size_t o1,
 159                               bus_space_handle_t h2, bus_size_t o2, bus_size_t c);
 160         void (*hbt_cp_4)(void *v, bus_space_handle_t h1, bus_size_t o1,
 161                               bus_space_handle_t h2, bus_size_t o2, bus_size_t c);
 162         void (*hbt_cp_8)(void *v, bus_space_handle_t h1, bus_size_t o1,
 163                               bus_space_handle_t h2, bus_size_t o2, bus_size_t c);
 164 };
 165 typedef const struct hppa_bus_space_tag *bus_space_tag_t;
 166 extern const struct hppa_bus_space_tag hppa_bustag;
 167
 168 /* flags for bus space map functions */
 169 #define BUS_SPACE_MAP_CACHEABLE         0x0001
 170 #define BUS_SPACE_MAP_LINEAR            0x0002
 171 #define BUS_SPACE_MAP_READONLY          0x0004
 172 #define BUS_SPACE_MAP_PREFETCHABLE      0x0008
 173 #define BUS_SPACE_MAP_NOEXTENT          0x8000  /* no extent ops */
 174 #define BUS_SPACE_BARRIER_READ          0x0000
 175 #define BUS_SPACE_BARRIER_WRITE         0x0001
 176
 177
 178 /* bus access routines */
 179 #define BUS_SPACE_ALIGNED_POINTER(p, t) ALIGNED_POINTER(p, t)
 180
 181 #define bus_space_map(t,a,c,ca,hp) \
 182         (((t)->hbt_map)((t)->hbt_cookie,(a),(c),(ca),(hp)))
 183 #define bus_space_unmap(t,h,c) \
 184         (((t)->hbt_unmap)((t)->hbt_cookie,(h),(c)))
 185 #define bus_space_subregion(t,h,o,c,hp) \
 186         (((t)->hbt_subregion)((t)->hbt_cookie,(h),(o),(c),(hp)))
 187 #define bus_space_alloc(t,b,e,c,al,bn,ca,ap,hp) \
 188         (((t)->hbt_alloc)((t)->hbt_cookie,(b),(e),(c),(al),(bn),(ca),(ap),(hp)))
 189 #define bus_space_free(t,h,c) \
 190         (((t)->hbt_free)((t)->hbt_cookie,(h),(c)))
 191 #define bus_space_barrier(t,h,o,l,op) \
 192         ((t)->hbt_barrier((t)->hbt_cookie, (h), (o), (l), (op)))
 193 #define bus_space_vaddr(t,h) \
 194         (((t)->hbt_vaddr)((t)->hbt_cookie,(h)))
 195 #define bus_space_mmap(t, a, o, p, f) \
 196         (*(t)->hbt_mmap)((t)->hbt_cookie, (a), (o), (p), (f))
 197
 198 #define bus_space_read_1(t,h,o) (((t)->hbt_r1)((t)->hbt_cookie,(h),(o)))
 199 #define bus_space_read_2(t,h,o) (((t)->hbt_r2)((t)->hbt_cookie,(h),(o)))
 200 #define bus_space_read_4(t,h,o) (((t)->hbt_r4)((t)->hbt_cookie,(h),(o)))
 201 #define bus_space_read_8(t,h,o) (((t)->hbt_r8)((t)->hbt_cookie,(h),(o)))
 202
 203 #define bus_space_write_1(t,h,o,v) (((t)->hbt_w1)((t)->hbt_cookie,(h),(o),(v)))
 204 #define bus_space_write_2(t,h,o,v) (((t)->hbt_w2)((t)->hbt_cookie,(h),(o),(v)))
 205 #define bus_space_write_4(t,h,o,v) (((t)->hbt_w4)((t)->hbt_cookie,(h),(o),(v)))
 206 #define bus_space_write_8(t,h,o,v) (((t)->hbt_w8)((t)->hbt_cookie,(h),(o),(v)))
 207
 208 /* XXX fredette */
 209 #define __BUS_SPACE_HAS_STREAM_METHODS
 210 #define bus_space_read_stream_2 bus_space_read_2
 211 #define bus_space_read_stream_4 bus_space_read_4
 212 #define bus_space_read_stream_8 bus_space_read_8
 213
 214 #define bus_space_write_stream_2        bus_space_write_2
 215 #define bus_space_write_stream_4        bus_space_write_4
 216 #define bus_space_write_stream_8        bus_space_write_8
 217
 218 #define bus_space_read_multi_1(t,h,o,a,c) \
 219         (((t)->hbt_rm_1)((t)->hbt_cookie, (h), (o), (a), (c)))
 220 #define bus_space_read_multi_2(t,h,o,a,c) \
 221         (((t)->hbt_rm_2)((t)->hbt_cookie, (h), (o), (a), (c)))
 222 #define bus_space_read_multi_4(t,h,o,a,c) \
 223         (((t)->hbt_rm_4)((t)->hbt_cookie, (h), (o), (a), (c)))
 224 #define bus_space_read_multi_8(t,h,o,a,c) \
 225         (((t)->hbt_rm_8)((t)->hbt_cookie, (h), (o), (a), (c)))
 226
 227 #define bus_space_write_multi_1(t,h,o,a,c) \
 228         (((t)->hbt_wm_1)((t)->hbt_cookie, (h), (o), (a), (c)))
 229 #define bus_space_write_multi_2(t,h,o,a,c) \
 230         (((t)->hbt_wm_2)((t)->hbt_cookie, (h), (o), (a), (c)))
 231 #define bus_space_write_multi_4(t,h,o,a,c) \
 232         (((t)->hbt_wm_4)((t)->hbt_cookie, (h), (o), (a), (c)))
 233 #define bus_space_write_multi_8(t,h,o,a,c) \
 234         (((t)->hbt_wm_8)((t)->hbt_cookie, (h), (o), (a), (c)))
 235
 236 #define bus_space_set_multi_1(t,h,o,v,c) \
 237         (((t)->hbt_sm_1)((t)->hbt_cookie, (h), (o), (v), (c)))
 238 #define bus_space_set_multi_2(t,h,o,v,c) \
 239         (((t)->hbt_sm_2)((t)->hbt_cookie, (h), (o), (v), (c)))
 240 #define bus_space_set_multi_4(t,h,o,v,c) \
 241         (((t)->hbt_sm_4)((t)->hbt_cookie, (h), (o), (v), (c)))
 242 #define bus_space_set_multi_8(t,h,o,v,c) \
 243         (((t)->hbt_sm_8)((t)->hbt_cookie, (h), (o), (v), (c)))
 244
 245 #define bus_space_read_multi_stream_2(t, h, o, a, c) \
 246         (((t)->hbt_rrm_2)((t)->hbt_cookie, (h), (o), (a), (c)))
 247 #define bus_space_read_multi_stream_4(t, h, o, a, c) \
 248         (((t)->hbt_rrm_4)((t)->hbt_cookie, (h), (o), (a), (c)))
 249 #define bus_space_read_multi_stream_8(t, h, o, a, c) \
 250         (((t)->hbt_rrm_8)((t)->hbt_cookie, (h), (o), (a), (c)))
 251
 252 #define bus_space_write_multi_stream_2(t, h, o, a, c) \
 253         (((t)->hbt_wrm_2)((t)->hbt_cookie, (h), (o), (a), (c)))
 254 #define bus_space_write_multi_stream_4(t, h, o, a, c) \
 255         (((t)->hbt_wrm_4)((t)->hbt_cookie, (h), (o), (a), (c)))
 256 #define bus_space_write_multi_stream_8(t, h, o, a, c) \
 257         (((t)->hbt_wrm_8)((t)->hbt_cookie, (h), (o), (a), (c)))
 258
 259 #define bus_space_read_region_1(t, h, o, a, c) \
 260         (((t)->hbt_rr_1)((t)->hbt_cookie, (h), (o), (a), (c)))
 261 #define bus_space_read_region_2(t, h, o, a, c) \
 262         (((t)->hbt_rr_2)((t)->hbt_cookie, (h), (o), (a), (c)))
 263 #define bus_space_read_region_4(t, h, o, a, c) \
 264         (((t)->hbt_rr_4)((t)->hbt_cookie, (h), (o), (a), (c)))
 265 #define bus_space_read_region_8(t, h, o, a, c) \
 266         (((t)->hbt_rr_8)((t)->hbt_cookie, (h), (o), (a), (c)))
 267
 268 #define bus_space_write_region_1(t, h, o, a, c) \
 269         (((t)->hbt_wr_1)((t)->hbt_cookie, (h), (o), (a), (c)))
 270 #define bus_space_write_region_2(t, h, o, a, c) \
 271         (((t)->hbt_wr_2)((t)->hbt_cookie, (h), (o), (a), (c)))
 272 #define bus_space_write_region_4(t, h, o, a, c) \
 273         (((t)->hbt_wr_4)((t)->hbt_cookie, (h), (o), (a), (c)))
 274 #define bus_space_write_region_8(t, h, o, a, c) \
 275         (((t)->hbt_wr_8)((t)->hbt_cookie, (h), (o), (a), (c)))
 276
 277 #define bus_space_read_region_stream_2(t, h, o, a, c) \
 278         (((t)->hbt_rrr_2)((t)->hbt_cookie, (h), (o), (a), (c)))
 279 #define bus_space_read_region_stream_4(t, h, o, a, c) \
 280         (((t)->hbt_rrr_4)((t)->hbt_cookie, (h), (o), (a), (c)))
 281 #define bus_space_read_region_stream_8(t, h, o, a, c) \
 282         (((t)->hbt_rrr_8)((t)->hbt_cookie, (h), (o), (a), (c)))
 283
 284 #define bus_space_write_region_stream_2(t, h, o, a, c) \
 285         (((t)->hbt_wrr_2)((t)->hbt_cookie, (h), (o), (a), (c)))
 286 #define bus_space_write_region_stream_4(t, h, o, a, c) \
 287         (((t)->hbt_wrr_4)((t)->hbt_cookie, (h), (o), (a), (c)))
 288 #define bus_space_write_region_stream_8(t, h, o, a, c) \
 289         (((t)->hbt_wrr_8)((t)->hbt_cookie, (h), (o), (a), (c)))
 290
 291 #define bus_space_set_region_1(t, h, o, v, c) \
 292         (((t)->hbt_sr_1)((t)->hbt_cookie, (h), (o), (v), (c)))
 293 #define bus_space_set_region_2(t, h, o, v, c) \
 294         (((t)->hbt_sr_2)((t)->hbt_cookie, (h), (o), (v), (c)))
 295 #define bus_space_set_region_4(t, h, o, v, c) \
 296         (((t)->hbt_sr_4)((t)->hbt_cookie, (h), (o), (v), (c)))
 297 #define bus_space_set_region_8(t, h, o, v, c) \
 298         (((t)->hbt_sr_8)((t)->hbt_cookie, (h), (o), (v), (c)))
 299
 300 #define bus_space_copy_1(t, h1, o1, h2, o2, c) \
 301         (((t)->hbt_cp_1)((t)->hbt_cookie, (h1), (o1), (h2), (o2), (c)))
 302 #define bus_space_copy_2(t, h1, o1, h2, o2, c) \
 303         (((t)->hbt_cp_2)((t)->hbt_cookie, (h1), (o1), (h2), (o2), (c)))
 304 #define bus_space_copy_4(t, h1, o1, h2, o2, c) \
 305         (((t)->hbt_cp_4)((t)->hbt_cookie, (h1), (o1), (h2), (o2), (c)))
 306 #define bus_space_copy_8(t, h1, o1, h2, o2, c) \
 307         (((t)->hbt_cp_8)((t)->hbt_cookie, (h1), (o1), (h2), (o2), (c)))
 308
 309 #define BUS_DMA_WAITOK          0x000   /* safe to sleep (pseudo-flag) */
 310 #define BUS_DMA_NOWAIT          0x001   /* not safe to sleep */
 311 #define BUS_DMA_ALLOCNOW        0x002   /* perform resource allocation now */
 312 #define BUS_DMA_COHERENT        0x004   /* hint: map memory DMA coherent */
 313 #define BUS_DMA_STREAMING       0x008   /* hint: sequential, unidirectional */
 314 #define BUS_DMA_BUS1            0x010   /* placeholders for bus functions... */
 315 #define BUS_DMA_BUS2            0x020
 316 #define BUS_DMA_BUS3            0x040
 317 #define BUS_DMA_BUS4            0x080
 318 #define BUS_DMA_READ            0x100   /* mapping is device -> memory only */
 319 #define BUS_DMA_WRITE           0x200   /* mapping is memory -> device only */
 320 #define BUS_DMA_NOCACHE         0x400   /* hint: map non-cached memory */
 321
 322 /* For devices that have a 24-bit address space */
 323 #define BUS_DMA_24BIT           BUS_DMA_BUS1
 324
 325 /* Forwards needed by prototypes below. */
 326 struct mbuf;
 327 struct proc;
 328 struct uio;
 329
 330 #define BUS_DMASYNC_POSTREAD    0x01
 331 #define BUS_DMASYNC_POSTWRITE   0x02
 332 #define BUS_DMASYNC_PREREAD     0x04
 333 #define BUS_DMASYNC_PREWRITE    0x08
 334
 335 typedef const struct hppa_bus_dma_tag   *bus_dma_tag_t;
 336 typedef struct hppa_bus_dmamap  *bus_dmamap_t;
 337
 338 #define BUS_DMA_TAG_VALID(t)    ((t) != (bus_dma_tag_t)0)
 339
 340 /*
 341  *      bus_dma_segment_t
 342  *
 343  *      Describes a single contiguous DMA transaction.  Values
 344  *      are suitable for programming into DMA registers.
 345  */
 346 struct hppa_bus_dma_segment {
 347         bus_addr_t      ds_addr;        /* DMA address */
 348         bus_size_t      ds_len;         /* length of transfer */
 349         void            *_ds_mlist;     /* page list when dmamem_alloc'ed */
 350         vaddr_t         _ds_va;         /* VA when dmamem_map'ed */
 351 };
 352 typedef struct hppa_bus_dma_segment     bus_dma_segment_t;
 353
 354 /*
 355  *      bus_dma_tag_t
 356  *
 357  *      A machine-dependent opaque type describing the implementation of
 358  *      DMA for a given bus.
 359  */
 360
 361 struct hppa_bus_dma_tag {
 362         void    *_cookie;               /* cookie used in the guts */
 363
 364         /*
 365          * DMA mapping methods.
 366          */
 367         int     (*_dmamap_create)(void *, bus_size_t, int,
 368                     bus_size_t, bus_size_t, int, bus_dmamap_t *);
 369         void    (*_dmamap_destroy)(void *, bus_dmamap_t);
 370         int     (*_dmamap_load)(void *, bus_dmamap_t, void *,
 371                     bus_size_t, struct proc *, int);
 372         int     (*_dmamap_load_mbuf)(void *, bus_dmamap_t,
 373                     struct mbuf *, int);
 374         int     (*_dmamap_load_uio)(void *, bus_dmamap_t,
 375                     struct uio *, int);
 376         int     (*_dmamap_load_raw)(void *, bus_dmamap_t,
 377                     bus_dma_segment_t *, int, bus_size_t, int);
 378         void    (*_dmamap_unload)(void *, bus_dmamap_t);
 379         void    (*_dmamap_sync)(void *, bus_dmamap_t, bus_addr_t, bus_size_t, int);
 380
 381         /*
 382          * DMA memory utility functions.
 383          */
 384         int     (*_dmamem_alloc)(void *, bus_size_t, bus_size_t,
 385                     bus_size_t, bus_dma_segment_t *, int, int *, int);
 386         void    (*_dmamem_free)(void *, bus_dma_segment_t *, int);
 387         int     (*_dmamem_map)(void *, bus_dma_segment_t *,
 388                     int, size_t, void **, int);
 389         void    (*_dmamem_unmap)(void *, void *, size_t);
 390         paddr_t (*_dmamem_mmap)(void *, bus_dma_segment_t *,
 391                     int, off_t, int, int);
 392 };
 393
 394 #define bus_dmamap_create(t, s, n, m, b, f, p)                  \
 395         (*(t)->_dmamap_create)((t)->_cookie, (s), (n), (m), (b), (f), (p))
 396 #define bus_dmamap_destroy(t, p)                                \
 397         (*(t)->_dmamap_destroy)((t)->_cookie, (p))
 398 #define bus_dmamap_load(t, m, b, s, p, f)                       \
 399         (*(t)->_dmamap_load)((t)->_cookie, (m), (b), (s), (p), (f))
 400 #define bus_dmamap_load_mbuf(t, m, b, f)                        \
 401         (*(t)->_dmamap_load_mbuf)((t)->_cookie, (m), (b), (f))
 402 #define bus_dmamap_load_uio(t, m, u, f)                         \
 403         (*(t)->_dmamap_load_uio)((t)->_cookie, (m), (u), (f))
 404 #define bus_dmamap_load_raw(t, m, sg, n, s, f)                  \
 405         (*(t)->_dmamap_load_raw)((t)->_cookie, (m), (sg), (n), (s), (f))
 406 #define bus_dmamap_unload(t, p)                                 \
 407         (*(t)->_dmamap_unload)((t)->_cookie, (p))
 408 #define bus_dmamap_sync(t, p, o, l, ops)                                \
 409         (void)((t)->_dmamap_sync ?                              \
 410             (*(t)->_dmamap_sync)((t)->_cookie, (p), (o), (l), (ops)) : (void)0)
 411
 412 #define bus_dmamem_alloc(t, s, a, b, sg, n, r, f)               \
 413         (*(t)->_dmamem_alloc)((t)->_cookie, (s), (a), (b), (sg), (n), (r), (f))
 414 #define bus_dmamem_free(t, sg, n)                               \
 415         (*(t)->_dmamem_free)((t)->_cookie, (sg), (n))
 416 #define bus_dmamem_map(t, sg, n, s, k, f)                       \
 417         (*(t)->_dmamem_map)((t)->_cookie, (sg), (n), (s), (k), (f))
 418 #define bus_dmamem_unmap(t, k, s)                               \
 419         (*(t)->_dmamem_unmap)((t)->_cookie, (k), (s))
 420 #define bus_dmamem_mmap(t, sg, n, o, p, f)                      \
 421         (*(t)->_dmamem_mmap)((t)->_cookie, (sg), (n), (o), (p), (f))
 422
 423 #define bus_dmatag_subregion(t, mna, mxa, nt, f) EOPNOTSUPP
 424 #define bus_dmatag_destroy(t)
 425
 426 /*
 427  *      bus_dmamap_t
 428  *
 429  *      Describes a DMA mapping.
 430  */
 431 struct hppa_bus_dmamap {
 432         /*
 433          * PRIVATE MEMBERS: not for use by machine-independent code.
 434          */
 435         bus_size_t      _dm_size;       /* largest DMA transfer mappable */
 436         int             _dm_segcnt;     /* number of segs this map can map */
 437         bus_size_t      _dm_maxsegsz;   /* fixed largest possible segment */
 438         bus_size_t      _dm_boundary;   /* don't cross this */
 439         int             _dm_flags;      /* misc. flags */
 440
 441         void            *_dm_cookie;    /* cookie for bus-specific functions */
 442
 443         /*
 444          * PUBLIC MEMBERS: these are used by machine-independent code.
 445          */
 446         bus_size_t      dm_maxsegsz;    /* largest possible segment */
 447         bus_size_t      dm_mapsize;     /* size of the mapping */
 448         int             dm_nsegs;       /* # valid segments in mapping */
 449         bus_dma_segment_t dm_segs[1];   /* segments; variable length */
 450 };
 451
 452 #endif /* _MACHINE_BUS_H_ */