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[netbsd-mini2440.git] / sys / arch / newsmips / include / bus.h
blob75c3a1dd9da3d746cb205cf007c9823d2386dfaa
1 /* $NetBSD: bus.h,v 1.18 2007/03/04 06:00:26 christos Exp $ */
2
3 /*
4 * Copyright (c) 1996, 1997, 1998, 2001 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 *
20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 #ifndef _NEWSMIPS_BUS_H_
34 #define _NEWSMIPS_BUS_H_
35
36 #include <mips/locore.h>
37
38 /*
39 * Utility macros; do not use outside this file.
40 */
41 #define __PB_TYPENAME_PREFIX(BITS) ___CONCAT(uint,BITS)
42 #define __PB_TYPENAME(BITS) ___CONCAT(__PB_TYPENAME_PREFIX(BITS),_t)
43
44 /*
45 * Bus address and size types
46 */
47 typedef u_long bus_addr_t;
48 typedef u_long bus_size_t;
49
50 /*
51 * Access methods for bus resources and address space.
52 */
53 typedef int bus_space_tag_t;
54 typedef u_long bus_space_handle_t;
55
56 /*
57 * int bus_space_map(bus_space_tag_t t, bus_addr_t addr,
58 * bus_size_t size, int flags, bus_space_handle_t *bshp);
59 *
60 * Map a region of bus space.
61 */
62
63 #define BUS_SPACE_MAP_CACHEABLE 0x01
64 #define BUS_SPACE_MAP_LINEAR 0x02
65 #define BUS_SPACE_MAP_PREFETCHABLE 0x04
66
67 int bus_space_map(bus_space_tag_t, bus_addr_t, bus_size_t,
68 int, bus_space_handle_t *);
69
70 /*
71 * void bus_space_unmap(bus_space_tag_t t,
72 * bus_space_handle_t bsh, bus_size_t size);
73 *
74 * Unmap a region of bus space.
75 */
76
77 void bus_space_unmap (bus_space_tag_t, bus_space_handle_t, bus_size_t);
78
79 /*
80 * int bus_space_subregion(bus_space_tag_t t,
81 * bus_space_handle_t bsh, bus_size_t offset, bus_size_t size,
82 * bus_space_handle_t *nbshp);
83 *
84 * Get a new handle for a subregion of an already-mapped area of bus space.
85 */
86
87 int bus_space_subregion(bus_space_tag_t t, bus_space_handle_t bsh,
88 bus_size_t offset, bus_size_t size, bus_space_handle_t *nbshp);
89
90 /*
91 * int bus_space_alloc(bus_space_tag_t t, bus_addr_t, rstart,
92 * bus_addr_t rend, bus_size_t size, bus_size_t align,
93 * bus_size_t boundary, int flags, bus_addr_t *addrp,
94 * bus_space_handle_t *bshp);
95 *
96 * Allocate a region of bus space.
97 */
98
99 int bus_space_alloc (bus_space_tag_t t, bus_addr_t rstart,
100 bus_addr_t rend, bus_size_t size, bus_size_t align,
101 bus_size_t boundary, int cacheable, bus_addr_t *addrp,
102 bus_space_handle_t *bshp);
103
104 /*
105 * int bus_space_free (bus_space_tag_t t,
106 * bus_space_handle_t bsh, bus_size_t size);
107 *
108 * Free a region of bus space.
109 */
110
111 void bus_space_free(bus_space_tag_t t, bus_space_handle_t bsh,
112 bus_size_t size);
113
114 /*
115 * uintN_t bus_space_read_N(bus_space_tag_t tag,
116 * bus_space_handle_t bsh, bus_size_t offset);
117 *
118 * Read a 1, 2, 4, or 8 byte quantity from bus space
119 * described by tag/handle/offset.
120 */
121
122 #define bus_space_read_1(t, h, o) \
123 ((void) t, (*(volatile uint8_t *)((h) + (o))))
124
125 #define bus_space_read_2(t, h, o) \
126 ((void) t, (*(volatile uint16_t *)((h) + (o))))
127
128 #define bus_space_read_4(t, h, o) \
129 ((void) t, (*(volatile uint32_t *)((h) + (o))))
130
131 #if 0 /* Cause a link error for bus_space_read_8 */
132 #define bus_space_read_8(t, h, o) !!! bus_space_read_8 unimplemented !!!
133 #endif
134
135 /*
136 * void bus_space_read_multi_N(bus_space_tag_t tag,
137 * bus_space_handle_t bsh, bus_size_t offset,
138 * uintN_t *addr, size_t count);
139 *
140 * Read `count' 1, 2, 4, or 8 byte quantities from bus space
141 * described by tag/handle/offset and copy into buffer provided.
142 */
143
144 #define __NEWSMIPS_bus_space_read_multi(BYTES,BITS) \
145 static __inline void __CONCAT(bus_space_read_multi_,BYTES) \
146 (bus_space_tag_t, bus_space_handle_t, bus_size_t, \
147 __PB_TYPENAME(BITS) *, size_t); \
148 \
149 static __inline void \
150 __CONCAT(bus_space_read_multi_,BYTES)(t, h, o, a, c) \
151 bus_space_tag_t t; \
152 bus_space_handle_t h; \
153 bus_size_t o; \
154 __PB_TYPENAME(BITS) *a; \
155 size_t c; \
156 { \
157 \
158 while (c--) \
159 *a++ = __CONCAT(bus_space_read_,BYTES)(t, h, o); \
160 }
161
162 __NEWSMIPS_bus_space_read_multi(1,8)
163 __NEWSMIPS_bus_space_read_multi(2,16)
164 __NEWSMIPS_bus_space_read_multi(4,32)
165
166 #if 0 /* Cause a link error for bus_space_read_multi_8 */
167 #define bus_space_read_multi_8 !!! bus_space_read_multi_8 unimplemented !!!
168 #endif
169
170 #undef __NEWSMIPS_bus_space_read_multi
171
172 /*
173 * void bus_space_read_region_N(bus_space_tag_t tag,
174 * bus_space_handle_t bsh, bus_size_t offset,
175 * uintN_t *addr, size_t count);
176 *
177 * Read `count' 1, 2, 4, or 8 byte quantities from bus space
178 * described by tag/handle and starting at `offset' and copy into
179 * buffer provided.
180 */
181
182 #define __NEWSMIPS_bus_space_read_region(BYTES,BITS) \
183 static __inline void __CONCAT(bus_space_read_region_,BYTES) \
184 (bus_space_tag_t, bus_space_handle_t, bus_size_t, \
185 __PB_TYPENAME(BITS) *, size_t); \
186 \
187 static __inline void \
188 __CONCAT(bus_space_read_region_,BYTES)(t, h, o, a, c) \
189 bus_space_tag_t t; \
190 bus_space_handle_t h; \
191 bus_size_t o; \
192 __PB_TYPENAME(BITS) *a; \
193 size_t c; \
194 { \
195 \
196 while (c--) { \
197 *a++ = __CONCAT(bus_space_read_,BYTES)(t, h, o); \
198 o += BYTES; \
199 } \
200 }
201
202 __NEWSMIPS_bus_space_read_region(1,8)
203 __NEWSMIPS_bus_space_read_region(2,16)
204 __NEWSMIPS_bus_space_read_region(4,32)
205
206 #if 0 /* Cause a link error for bus_space_read_region_8 */
207 #define bus_space_read_region_8 !!! bus_space_read_region_8 unimplemented !!!
208 #endif
209
210 #undef __NEWSMIPS_bus_space_read_region
211
212 /*
213 * void bus_space_write_N(bus_space_tag_t tag,
214 * bus_space_handle_t bsh, bus_size_t offset,
215 * uintN_t value);
216 *
217 * Write the 1, 2, 4, or 8 byte value `value' to bus space
218 * described by tag/handle/offset.
219 */
220
221 #define bus_space_write_1(t, h, o, v) \
222 do { \
223 (void) t; \
224 *(volatile uint8_t *)((h) + (o)) = (v); \
225 } while (0)
226
227 #define bus_space_write_2(t, h, o, v) \
228 do { \
229 (void) t; \
230 *(volatile uint16_t *)((h) + (o)) = (v); \
231 } while (0)
232
233 #define bus_space_write_4(t, h, o, v) \
234 do { \
235 (void) t; \
236 *(volatile uint32_t *)((h) + (o)) = (v); \
237 } while (0)
238
239 #if 0 /* Cause a link error for bus_space_write_8 */
240 #define bus_space_write_8 !!! bus_space_write_8 not implemented !!!
241 #endif
242
243 /*
244 * void bus_space_write_multi_N(bus_space_tag_t tag,
245 * bus_space_handle_t bsh, bus_size_t offset,
246 * const uintN_t *addr, size_t count);
247 *
248 * Write `count' 1, 2, 4, or 8 byte quantities from the buffer
249 * provided to bus space described by tag/handle/offset.
250 */
251
252 #define __NEWSMIPS_bus_space_write_multi(BYTES,BITS) \
253 static __inline void __CONCAT(bus_space_write_multi_,BYTES) \
254 (bus_space_tag_t, bus_space_handle_t, bus_size_t, \
255 const __PB_TYPENAME(BITS) *, size_t); \
256 \
257 static __inline void \
258 __CONCAT(bus_space_write_multi_,BYTES)(t, h, o, a, c) \
259 bus_space_tag_t t; \
260 bus_space_handle_t h; \
261 bus_size_t o; \
262 const __PB_TYPENAME(BITS) *a; \
263 size_t c; \
264 { \
265 \
266 while (c--) \
267 __CONCAT(bus_space_write_,BYTES)(t, h, o, *a++); \
268 }
269
270 __NEWSMIPS_bus_space_write_multi(1,8)
271 __NEWSMIPS_bus_space_write_multi(2,16)
272 __NEWSMIPS_bus_space_write_multi(4,32)
273
274 #if 0 /* Cause a link error for bus_space_write_8 */
275 #define bus_space_write_multi_8(t, h, o, a, c) \
276 !!! bus_space_write_multi_8 unimplimented !!!
277 #endif
278
279 #undef __NEWSMIPS_bus_space_write_multi
280
281 /*
282 * void bus_space_write_region_N(bus_space_tag_t tag,
283 * bus_space_handle_t bsh, bus_size_t offset,
284 * const uintN_t *addr, size_t count);
285 *
286 * Write `count' 1, 2, 4, or 8 byte quantities from the buffer provided
287 * to bus space described by tag/handle starting at `offset'.
288 */
289
290 #define __NEWSMIPS_bus_space_write_region(BYTES,BITS) \
291 static __inline void __CONCAT(bus_space_write_region_,BYTES) \
292 (bus_space_tag_t, bus_space_handle_t, bus_size_t, \
293 const __PB_TYPENAME(BITS) *, size_t); \
294 \
295 static __inline void \
296 __CONCAT(bus_space_write_region_,BYTES)(t, h, o, a, c) \
297 bus_space_tag_t t; \
298 bus_space_handle_t h; \
299 bus_size_t o; \
300 const __PB_TYPENAME(BITS) *a; \
301 size_t c; \
302 { \
303 \
304 while (c--) { \
305 __CONCAT(bus_space_write_,BYTES)(t, h, o, *a++); \
306 o += BYTES; \
307 } \
308 }
309
310 __NEWSMIPS_bus_space_write_region(1,8)
311 __NEWSMIPS_bus_space_write_region(2,16)
312 __NEWSMIPS_bus_space_write_region(4,32)
313
314 #if 0 /* Cause a link error for bus_space_write_region_8 */
315 #define bus_space_write_region_8 \
316 !!! bus_space_write_region_8 unimplemented !!!
317 #endif
318
319 #undef __NEWSMIPS_bus_space_write_region
320
321 /*
322 * void bus_space_set_multi_N(bus_space_tag_t tag,
323 * bus_space_handle_t bsh, bus_size_t offset, uintN_t val,
324 * size_t count);
325 *
326 * Write the 1, 2, 4, or 8 byte value `val' to bus space described
327 * by tag/handle/offset `count' times.
328 */
329
330 #define __NEWSMIPS_bus_space_set_multi(BYTES,BITS) \
331 static __inline void __CONCAT(bus_space_set_multi_,BYTES) \
332 (bus_space_tag_t, bus_space_handle_t, bus_size_t, \
333 __PB_TYPENAME(BITS), size_t); \
334 \
335 static __inline void \
336 __CONCAT(bus_space_set_multi_,BYTES)(t, h, o, v, c) \
337 bus_space_tag_t t; \
338 bus_space_handle_t h; \
339 bus_size_t o; \
340 __PB_TYPENAME(BITS) v; \
341 size_t c; \
342 { \
343 \
344 while (c--) \
345 __CONCAT(bus_space_write_,BYTES)(t, h, o, v); \
346 }
347
348 __NEWSMIPS_bus_space_set_multi(1,8)
349 __NEWSMIPS_bus_space_set_multi(2,16)
350 __NEWSMIPS_bus_space_set_multi(4,32)
351
352 #if 0 /* Cause a link error for bus_space_set_multi_8 */
353 #define bus_space_set_multi_8 \
354 !!! bus_space_set_multi_8 unimplemented !!!
355 #endif
356
357 #undef __NEWSMIPS_bus_space_set_multi
358
359 /*
360 * void bus_space_set_region_N(bus_space_tag_t tag,
361 * bus_space_handle_t bsh, bus_size_t offset, uintN_t val,
362 * size_t count);
363 *
364 * Write `count' 1, 2, 4, or 8 byte value `val' to bus space described
365 * by tag/handle starting at `offset'.
366 */
367
368 #define __NEWSMIPS_bus_space_set_region(BYTES,BITS) \
369 static __inline void __CONCAT(bus_space_set_region_,BYTES) \
370 (bus_space_tag_t, bus_space_handle_t, bus_size_t, \
371 __PB_TYPENAME(BITS), size_t); \
372 \
373 static __inline void \
374 __CONCAT(bus_space_set_region_,BYTES)(t, h, o, v, c) \
375 bus_space_tag_t t; \
376 bus_space_handle_t h; \
377 bus_size_t o; \
378 __PB_TYPENAME(BITS) v; \
379 size_t c; \
380 { \
381 \
382 while (c--) { \
383 __CONCAT(bus_space_write_,BYTES)(t, h, o, v); \
384 o += BYTES; \
385 } \
386 }
387
388 __NEWSMIPS_bus_space_set_region(1,8)
389 __NEWSMIPS_bus_space_set_region(2,16)
390 __NEWSMIPS_bus_space_set_region(4,32)
391
392 #if 0 /* Cause a link error for bus_space_set_region_8 */
393 #define bus_space_set_region_8 \
394 !!! bus_space_set_region_8 unimplemented !!!
395 #endif
396
397 #undef __NEWSMIPS_bus_space_set_region
398
399 /*
400 * void bus_space_copy_region_N(bus_space_tag_t tag,
401 * bus_space_handle_t bsh1, bus_size_t off1,
402 * bus_space_handle_t bsh2, bus_size_t off2,
403 * bus_size_t count);
404 *
405 * Copy `count' 1, 2, 4, or 8 byte values from bus space starting
406 * at tag/bsh1/off1 to bus space starting at tag/bsh2/off2.
407 */
408
409 #define __NEWSMIPS_copy_region(BYTES) \
410 static __inline void __CONCAT(bus_space_copy_region_,BYTES) \
411 (bus_space_tag_t, \
412 bus_space_handle_t bsh1, bus_size_t off1, \
413 bus_space_handle_t bsh2, bus_size_t off2, \
414 bus_size_t count); \
415 \
416 static __inline void \
417 __CONCAT(bus_space_copy_region_,BYTES)(t, h1, o1, h2, o2, c) \
418 bus_space_tag_t t; \
419 bus_space_handle_t h1, h2; \
420 bus_size_t o1, o2, c; \
421 { \
422 bus_size_t o; \
423 \
424 if ((h1 + o1) >= (h2 + o2)) { \
425 /* src after dest: copy forward */ \
426 for (o = 0; c != 0; c--, o += BYTES) \
427 __CONCAT(bus_space_write_,BYTES)(t, h2, o2 + o, \
428 __CONCAT(bus_space_read_,BYTES)(t, h1, o1 + o)); \
429 } else { \
430 /* dest after src: copy backwards */ \
431 for (o = (c - 1) * BYTES; c != 0; c--, o -= BYTES) \
432 __CONCAT(bus_space_write_,BYTES)(t, h2, o2 + o, \
433 __CONCAT(bus_space_read_,BYTES)(t, h1, o1 + o)); \
434 } \
435 }
436
437 __NEWSMIPS_copy_region(1)
438 __NEWSMIPS_copy_region(2)
439 __NEWSMIPS_copy_region(4)
440
441 #if 0 /* Cause a link error for bus_space_copy_region_8 */
442 #define bus_space_copy_region_8 \
443 !!! bus_space_copy_region_8 unimplemented !!!
444 #endif
445
446 #undef __NEWSMIPS_copy_region
447
448 /*
449 * Bus read/write barrier methods.
450 *
451 * void bus_space_barrier(bus_space_tag_t tag,
452 * bus_space_handle_t bsh, bus_size_t offset,
453 * bus_size_t len, int flags);
454 *
455 * On the MIPS, we just flush the write buffer.
456 */
457 #define bus_space_barrier(t, h, o, l, f) \
458 ((void)((void)(t), (void)(h), (void)(o), (void)(l), (void)(f), \
459 wbflush()))
460 #define BUS_SPACE_BARRIER_READ 0x01 /* force read barrier */
461 #define BUS_SPACE_BARRIER_WRITE 0x02 /* force write barrier */
462
463 #undef __PB_TYPENAME_PREFIX
464 #undef __PB_TYPENAME
465
466 #define BUS_SPACE_ALIGNED_POINTER(p, t) ALIGNED_POINTER(p, t)
467
468 /*
469 * Flags used in various bus DMA methods.
470 */
471 #define BUS_DMA_WAITOK 0x000 /* safe to sleep (pseudo-flag) */
472 #define BUS_DMA_NOWAIT 0x001 /* not safe to sleep */
473 #define BUS_DMA_ALLOCNOW 0x002 /* perform resource allocation now */
474 #define BUS_DMA_COHERENT 0x004 /* hint: map memory DMA coherent */
475 #define BUS_DMA_STREAMING 0x008 /* hint: sequential, unidirectional */
476 #define BUS_DMA_BUS1 0x010 /* placeholders for bus functions... */
477 #define BUS_DMA_BUS2 0x020
478 #define BUS_DMA_BUS3 0x040
479 #define BUS_DMA_BUS4 0x080
480 #define BUS_DMA_READ 0x100 /* mapping is device -> memory only */
481 #define BUS_DMA_WRITE 0x200 /* mapping is memory -> device only */
482 #define BUS_DMA_NOCACHE 0x400 /* hint: map non-cached memory */
483
484 #define NEWSMIPS_DMAMAP_COHERENT 0x10000 /* no cache flush necessary on sync */
485 #define NEWSMIPS_DMAMAP_MAPTBL 0x20000 /* use DMA maping table */
486
487 /* Forwards needed by prototypes below. */
488 struct mbuf;
489 struct uio;
490
491 /*
492 * Operations performed by bus_dmamap_sync().
493 */
494 #define BUS_DMASYNC_PREREAD 0x01 /* pre-read synchronization */
495 #define BUS_DMASYNC_POSTREAD 0x02 /* post-read synchronization */
496 #define BUS_DMASYNC_PREWRITE 0x04 /* pre-write synchronization */
497 #define BUS_DMASYNC_POSTWRITE 0x08 /* post-write synchronization */
498
499 typedef struct newsmips_bus_dma_tag *bus_dma_tag_t;
500 typedef struct newsmips_bus_dmamap *bus_dmamap_t;
501
502 #define BUS_DMA_TAG_VALID(t) ((t) != (bus_dma_tag_t)0)
503
504 /*
505 * bus_dma_segment_t
506 *
507 * Describes a single contiguous DMA transaction. Values
508 * are suitable for programming into DMA registers.
509 */
510 struct newsmips_bus_dma_segment {
511 bus_addr_t ds_addr; /* DMA address */
512 bus_size_t ds_len; /* length of transfer */
513 bus_addr_t _ds_vaddr; /* virtual address, 0 if invalid */
514 };
515 typedef struct newsmips_bus_dma_segment bus_dma_segment_t;
516
517 /*
518 * bus_dma_tag_t
519 *
520 * A machine-dependent opaque type describing the implementation of
521 * DMA for a given bus.
522 */
523
524 struct newsmips_bus_dma_tag {
525 /*
526 * DMA mapping methods.
527 */
528 int (*_dmamap_create)(bus_dma_tag_t, bus_size_t, int,
529 bus_size_t, bus_size_t, int, bus_dmamap_t *);
530 void (*_dmamap_destroy)(bus_dma_tag_t, bus_dmamap_t);
531 int (*_dmamap_load)(bus_dma_tag_t, bus_dmamap_t, void *,
532 bus_size_t, struct proc *, int);
533 int (*_dmamap_load_mbuf)(bus_dma_tag_t, bus_dmamap_t,
534 struct mbuf *, int);
535 int (*_dmamap_load_uio)(bus_dma_tag_t, bus_dmamap_t,
536 struct uio *, int);
537 int (*_dmamap_load_raw)(bus_dma_tag_t, bus_dmamap_t,
538 bus_dma_segment_t *, int, bus_size_t, int);
539 void (*_dmamap_unload)(bus_dma_tag_t, bus_dmamap_t);
540 void (*_dmamap_sync)(bus_dma_tag_t, bus_dmamap_t,
541 bus_addr_t, bus_size_t, int);
542
543 /*
544 * DMA memory utility functions.
545 */
546 int (*_dmamem_alloc)(bus_dma_tag_t, bus_size_t, bus_size_t,
547 bus_size_t, bus_dma_segment_t *, int, int *, int);
548 void (*_dmamem_free)(bus_dma_tag_t,
549 bus_dma_segment_t *, int);
550 int (*_dmamem_map)(bus_dma_tag_t, bus_dma_segment_t *,
551 int, size_t, void **, int);
552 void (*_dmamem_unmap)(bus_dma_tag_t, void *, size_t);
553 paddr_t (*_dmamem_mmap)(bus_dma_tag_t, bus_dma_segment_t *,
554 int, off_t, int, int);
555
556 /*
557 * NEWSMIPS quirks.
558 * This is NOT a constant. Slot dependent information is
559 * required to flush DMA cache correctly.
560 */
561 int _slotno;
562 bus_space_tag_t _slotbaset;
563 bus_space_handle_t _slotbaseh;
564 };
565
566 #define bus_dmamap_create(t, s, n, m, b, f, p) \
567 (*(t)->_dmamap_create)((t), (s), (n), (m), (b), (f), (p))
568 #define bus_dmamap_destroy(t, p) \
569 (*(t)->_dmamap_destroy)((t), (p))
570 #define bus_dmamap_load(t, m, b, s, p, f) \
571 (*(t)->_dmamap_load)((t), (m), (b), (s), (p), (f))
572 #define bus_dmamap_load_mbuf(t, m, b, f) \
573 (*(t)->_dmamap_load_mbuf)((t), (m), (b), (f))
574 #define bus_dmamap_load_uio(t, m, u, f) \
575 (*(t)->_dmamap_load_uio)((t), (m), (u), (f))
576 #define bus_dmamap_load_raw(t, m, sg, n, s, f) \
577 (*(t)->_dmamap_load_raw)((t), (m), (sg), (n), (s), (f))
578 #define bus_dmamap_unload(t, p) \
579 (*(t)->_dmamap_unload)((t), (p))
580 #define bus_dmamap_sync(t, p, o, l, ops) \
581 (*(t)->_dmamap_sync)((t), (p), (o), (l), (ops))
582
583 #define bus_dmamem_alloc(t, s, a, b, sg, n, r, f) \
584 (*(t)->_dmamem_alloc)((t), (s), (a), (b), (sg), (n), (r), (f))
585 #define bus_dmamem_free(t, sg, n) \
586 (*(t)->_dmamem_free)((t), (sg), (n))
587 #define bus_dmamem_map(t, sg, n, s, k, f) \
588 (*(t)->_dmamem_map)((t), (sg), (n), (s), (k), (f))
589 #define bus_dmamem_unmap(t, k, s) \
590 (*(t)->_dmamem_unmap)((t), (k), (s))
591 #define bus_dmamem_mmap(t, sg, n, o, p, f) \
592 (*(t)->_dmamem_mmap)((t), (sg), (n), (o), (p), (f))
593
594 #define bus_dmatag_subregion(t, mna, mxa, nt, f) EOPNOTSUPP
595 #define bus_dmatag_destroy(t)
596
597 /*
598 * bus_dmamap_t
599 *
600 * Describes a DMA mapping.
601 */
602 struct newsmips_bus_dmamap {
603 /*
604 * PRIVATE MEMBERS: not for use my machine-independent code.
605 */
606 bus_size_t _dm_size; /* largest DMA transfer mappable */
607 int _dm_segcnt; /* number of segs this map can map */
608 bus_size_t _dm_maxmaxsegsz; /* fixed largest possible segment */
609 bus_size_t _dm_boundary; /* don't cross this */
610 int _dm_flags; /* misc. flags */
611 int _dm_maptbl; /* DMA mapping table index */
612 int _dm_maptblcnt; /* number of DMA mapping table */
613 struct vmspace *_dm_vmspace; /* vmspace that owns the mapping */
614
615 /*
616 * PUBLIC MEMBERS: these are used by machine-independent code.
617 */
618 bus_size_t dm_maxsegsz; /* largest possible segment */
619 bus_size_t dm_mapsize; /* size of the mapping */
620 int dm_nsegs; /* # valid segments in mapping */
621 bus_dma_segment_t dm_segs[1]; /* segments; variable length */
622 };
623
624 #ifdef _NEWSMIPS_BUS_DMA_PRIVATE
625 void newsmips_bus_dma_init(void);
626
627 int _bus_dmamap_create(bus_dma_tag_t, bus_size_t, int, bus_size_t,
628 bus_size_t, int, bus_dmamap_t *);
629 void _bus_dmamap_destroy(bus_dma_tag_t, bus_dmamap_t);
630 int _bus_dmamap_load(bus_dma_tag_t, bus_dmamap_t, void *,
631 bus_size_t, struct proc *, int);
632 int _bus_dmamap_load_mbuf(bus_dma_tag_t, bus_dmamap_t,
633 struct mbuf *, int);
634 int _bus_dmamap_load_uio(bus_dma_tag_t, bus_dmamap_t,
635 struct uio *, int);
636 int _bus_dmamap_load_raw(bus_dma_tag_t, bus_dmamap_t,
637 bus_dma_segment_t *, int, bus_size_t, int);
638 void _bus_dmamap_unload(bus_dma_tag_t, bus_dmamap_t);
639 void _bus_dmamap_sync_r3k(bus_dma_tag_t, bus_dmamap_t, bus_addr_t,
640 bus_size_t, int);
641 void _bus_dmamap_sync_r4k(bus_dma_tag_t, bus_dmamap_t, bus_addr_t,
642 bus_size_t, int);
643
644 int _bus_dmamem_alloc(bus_dma_tag_t tag, bus_size_t size,
645 bus_size_t alignment, bus_size_t boundary,
646 bus_dma_segment_t *segs, int nsegs, int *rsegs, int flags);
647 void _bus_dmamem_free(bus_dma_tag_t tag, bus_dma_segment_t *segs,
648 int nsegs);
649 int _bus_dmamem_map(bus_dma_tag_t tag, bus_dma_segment_t *segs,
650 int nsegs, size_t size, void **kvap, int flags);
651 void _bus_dmamem_unmap(bus_dma_tag_t tag, void *kva,
652 size_t size);
653 paddr_t _bus_dmamem_mmap(bus_dma_tag_t tag, bus_dma_segment_t *segs,
654 int nsegs, off_t off, int prot, int flags);
655
656 int _bus_dmamem_alloc_range(bus_dma_tag_t tag, bus_size_t size,
657 bus_size_t alignment, bus_size_t boundary,
658 bus_dma_segment_t *segs, int nsegs, int *rsegs, int flags,
659 vaddr_t low, vaddr_t high);
660
661 extern struct newsmips_bus_dma_tag newsmips_default_bus_dma_tag;
662 #endif /* _NEWSMIPS_BUS_DMA_PRIVATE */
663
664 #endif /* _NEWSMIPS_BUS_H_ */
NetBSD on the FriendlyARM MINI2440