1 /*
2 * Copyright 2003-2011 Netlogic Microsystems (Netlogic). All rights
3 * reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in
13 * the documentation and/or other materials provided with the
14 * distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY Netlogic Microsystems ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL NETLOGIC OR CONTRIBUTORS BE
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
26 * THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * NETLOGIC_BSD */
29
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD: releng/10.3/sys/mips/nlm/bus_space_rmi.c 239487 2012-08-21 09:37:23Z jchandra $");
32
33 #include <sys/param.h>
34 #include <sys/systm.h>
35 #include <sys/bus.h>
36 #include <sys/kernel.h>
37 #include <sys/endian.h>
38 #include <sys/malloc.h>
39 #include <sys/ktr.h>
40
41 #include <vm/vm.h>
42 #include <vm/pmap.h>
43 #include <vm/vm_kern.h>
44 #include <vm/vm_extern.h>
45
46 #include <machine/bus.h>
47 #include <machine/cache.h>
48
49 static int
50 rmi_bus_space_map(void *t, bus_addr_t addr,
51 bus_size_t size, int flags,
52 bus_space_handle_t *bshp);
53
54 static void
55 rmi_bus_space_unmap(void *t, bus_space_handle_t bsh,
56 bus_size_t size);
57
58 static int
59 rmi_bus_space_subregion(void *t,
60 bus_space_handle_t bsh,
61 bus_size_t offset, bus_size_t size,
62 bus_space_handle_t *nbshp);
63
64 static u_int8_t
65 rmi_bus_space_read_1(void *t,
66 bus_space_handle_t handle,
67 bus_size_t offset);
68
69 static u_int16_t
70 rmi_bus_space_read_2(void *t,
71 bus_space_handle_t handle,
72 bus_size_t offset);
73
74 static u_int32_t
75 rmi_bus_space_read_4(void *t,
76 bus_space_handle_t handle,
77 bus_size_t offset);
78
79 static void
80 rmi_bus_space_read_multi_1(void *t,
81 bus_space_handle_t handle,
82 bus_size_t offset, u_int8_t *addr,
83 size_t count);
84
85 static void
86 rmi_bus_space_read_multi_2(void *t,
87 bus_space_handle_t handle,
88 bus_size_t offset, u_int16_t *addr,
89 size_t count);
90
91 static void
92 rmi_bus_space_read_multi_4(void *t,
93 bus_space_handle_t handle,
94 bus_size_t offset, u_int32_t *addr,
95 size_t count);
96
97 static void
98 rmi_bus_space_read_region_1(void *t,
99 bus_space_handle_t bsh,
100 bus_size_t offset, u_int8_t *addr,
101 size_t count);
102
103 static void
104 rmi_bus_space_read_region_2(void *t,
105 bus_space_handle_t bsh,
106 bus_size_t offset, u_int16_t *addr,
107 size_t count);
108
109 static void
110 rmi_bus_space_read_region_4(void *t,
111 bus_space_handle_t bsh,
112 bus_size_t offset, u_int32_t *addr,
113 size_t count);
114
115 static void
116 rmi_bus_space_write_1(void *t,
117 bus_space_handle_t handle,
118 bus_size_t offset, u_int8_t value);
119
120 static void
121 rmi_bus_space_write_2(void *t,
122 bus_space_handle_t handle,
123 bus_size_t offset, u_int16_t value);
124
125 static void
126 rmi_bus_space_write_4(void *t,
127 bus_space_handle_t handle,
128 bus_size_t offset, u_int32_t value);
129
130 static void
131 rmi_bus_space_write_multi_1(void *t,
132 bus_space_handle_t handle,
133 bus_size_t offset,
134 const u_int8_t *addr,
135 size_t count);
136
137 static void
138 rmi_bus_space_write_multi_2(void *t,
139 bus_space_handle_t handle,
140 bus_size_t offset,
141 const u_int16_t *addr,
142 size_t count);
143
144 static void
145 rmi_bus_space_write_multi_4(void *t,
146 bus_space_handle_t handle,
147 bus_size_t offset,
148 const u_int32_t *addr,
149 size_t count);
150
151 static void
152 rmi_bus_space_write_region_2(void *t,
153 bus_space_handle_t bsh,
154 bus_size_t offset,
155 const u_int16_t *addr,
156 size_t count);
157
158 static void
159 rmi_bus_space_write_region_4(void *t,
160 bus_space_handle_t bsh,
161 bus_size_t offset,
162 const u_int32_t *addr,
163 size_t count);
164
165
166 static void
167 rmi_bus_space_set_region_2(void *t,
168 bus_space_handle_t bsh,
169 bus_size_t offset, u_int16_t value,
170 size_t count);
171 static void
172 rmi_bus_space_set_region_4(void *t,
173 bus_space_handle_t bsh,
174 bus_size_t offset, u_int32_t value,
175 size_t count);
176
177 static void
178 rmi_bus_space_barrier(void *tag __unused, bus_space_handle_t bsh __unused,
179 bus_size_t offset __unused, bus_size_t len __unused, int flags);
180
181 static void
182 rmi_bus_space_copy_region_2(void *t,
183 bus_space_handle_t bsh1,
184 bus_size_t off1,
185 bus_space_handle_t bsh2,
186 bus_size_t off2, size_t count);
187
188 u_int8_t
189 rmi_bus_space_read_stream_1(void *t, bus_space_handle_t handle,
190 bus_size_t offset);
191
192 static u_int16_t
193 rmi_bus_space_read_stream_2(void *t, bus_space_handle_t handle,
194 bus_size_t offset);
195
196 static u_int32_t
197 rmi_bus_space_read_stream_4(void *t, bus_space_handle_t handle,
198 bus_size_t offset);
199 static void
200 rmi_bus_space_read_multi_stream_1(void *t,
201 bus_space_handle_t handle,
202 bus_size_t offset, u_int8_t *addr,
203 size_t count);
204
205 static void
206 rmi_bus_space_read_multi_stream_2(void *t,
207 bus_space_handle_t handle,
208 bus_size_t offset, u_int16_t *addr,
209 size_t count);
210
211 static void
212 rmi_bus_space_read_multi_stream_4(void *t,
213 bus_space_handle_t handle,
214 bus_size_t offset, u_int32_t *addr,
215 size_t count);
216
217 void
218 rmi_bus_space_write_stream_1(void *t, bus_space_handle_t bsh,
219 bus_size_t offset, u_int8_t value);
220 static void
221 rmi_bus_space_write_stream_2(void *t, bus_space_handle_t handle,
222 bus_size_t offset, u_int16_t value);
223
224 static void
225 rmi_bus_space_write_stream_4(void *t, bus_space_handle_t handle,
226 bus_size_t offset, u_int32_t value);
227
228 static void
229 rmi_bus_space_write_multi_stream_1(void *t,
230 bus_space_handle_t handle,
231 bus_size_t offset,
232 const u_int8_t *addr,
233 size_t count);
234 static void
235 rmi_bus_space_write_multi_stream_2(void *t,
236 bus_space_handle_t handle,
237 bus_size_t offset,
238 const u_int16_t *addr,
239 size_t count);
240
241 static void
242 rmi_bus_space_write_multi_stream_4(void *t,
243 bus_space_handle_t handle,
244 bus_size_t offset,
245 const u_int32_t *addr,
246 size_t count);
247
248 #define TODO() printf("XLP bus space: '%s' unimplemented\n", __func__)
249
250 static struct bus_space local_rmi_bus_space = {
251 /* cookie */
252 (void *)0,
253
254 /* mapping/unmapping */
255 rmi_bus_space_map,
256 rmi_bus_space_unmap,
257 rmi_bus_space_subregion,
258
259 /* allocation/deallocation */
260 NULL,
261 NULL,
262
263 /* barrier */
264 rmi_bus_space_barrier,
265
266 /* read (single) */
267 rmi_bus_space_read_1,
268 rmi_bus_space_read_2,
269 rmi_bus_space_read_4,
270 NULL,
271
272 /* read multiple */
273 rmi_bus_space_read_multi_1,
274 rmi_bus_space_read_multi_2,
275 rmi_bus_space_read_multi_4,
276 NULL,
277
278 /* read region */
279 rmi_bus_space_read_region_1,
280 rmi_bus_space_read_region_2,
281 rmi_bus_space_read_region_4,
282 NULL,
283
284 /* write (single) */
285 rmi_bus_space_write_1,
286 rmi_bus_space_write_2,
287 rmi_bus_space_write_4,
288 NULL,
289
290 /* write multiple */
291 rmi_bus_space_write_multi_1,
292 rmi_bus_space_write_multi_2,
293 rmi_bus_space_write_multi_4,
294 NULL,
295
296 /* write region */
297 NULL,
298 rmi_bus_space_write_region_2,
299 rmi_bus_space_write_region_4,
300 NULL,
301
302 /* set multiple */
303 NULL,
304 NULL,
305 NULL,
306 NULL,
307
308 /* set region */
309 NULL,
310 rmi_bus_space_set_region_2,
311 rmi_bus_space_set_region_4,
312 NULL,
313
314 /* copy */
315 NULL,
316 rmi_bus_space_copy_region_2,
317 NULL,
318 NULL,
319
320 /* read (single) stream */
321 rmi_bus_space_read_stream_1,
322 rmi_bus_space_read_stream_2,
323 rmi_bus_space_read_stream_4,
324 NULL,
325
326 /* read multiple stream */
327 rmi_bus_space_read_multi_stream_1,
328 rmi_bus_space_read_multi_stream_2,
329 rmi_bus_space_read_multi_stream_4,
330 NULL,
331
332 /* read region stream */
333 rmi_bus_space_read_region_1,
334 rmi_bus_space_read_region_2,
335 rmi_bus_space_read_region_4,
336 NULL,
337
338 /* write (single) stream */
339 rmi_bus_space_write_stream_1,
340 rmi_bus_space_write_stream_2,
341 rmi_bus_space_write_stream_4,
342 NULL,
343
344 /* write multiple stream */
345 rmi_bus_space_write_multi_stream_1,
346 rmi_bus_space_write_multi_stream_2,
347 rmi_bus_space_write_multi_stream_4,
348 NULL,
349
350 /* write region stream */
351 NULL,
352 rmi_bus_space_write_region_2,
353 rmi_bus_space_write_region_4,
354 NULL,
355 };
356
357 /* generic bus_space tag */
358 bus_space_tag_t rmi_bus_space = &local_rmi_bus_space;
359
360 /*
361 * Map a region of device bus space into CPU virtual address space.
362 */
363 static int
364 rmi_bus_space_map(void *t __unused, bus_addr_t addr,
365 bus_size_t size __unused, int flags __unused,
366 bus_space_handle_t *bshp)
367 {
368
369 *bshp = MIPS_PHYS_TO_DIRECT_UNCACHED(addr);
370 return (0);
371 }
372
373 /*
374 * Unmap a region of device bus space.
375 */
376 static void
377 rmi_bus_space_unmap(void *t __unused, bus_space_handle_t bsh __unused,
378 bus_size_t size __unused)
379 {
380 }
381
382 /*
383 * Get a new handle for a subregion of an already-mapped area of bus space.
384 */
385
386 static int
387 rmi_bus_space_subregion(void *t __unused, bus_space_handle_t bsh,
388 bus_size_t offset, bus_size_t size __unused,
389 bus_space_handle_t *nbshp)
390 {
391 *nbshp = bsh + offset;
392 return (0);
393 }
394
395 /*
396 * Read a 1, 2, 4, or 8 byte quantity from bus space
397 * described by tag/handle/offset.
398 */
399
400 static u_int8_t
401 rmi_bus_space_read_1(void *tag, bus_space_handle_t handle,
402 bus_size_t offset)
403 {
404 return (u_int8_t) (*(volatile u_int8_t *)(handle + offset));
405 }
406
407 static u_int16_t
408 rmi_bus_space_read_2(void *tag, bus_space_handle_t handle,
409 bus_size_t offset)
410 {
411 return (u_int16_t)(*(volatile u_int16_t *)(handle + offset));
412 }
413
414 static u_int32_t
415 rmi_bus_space_read_4(void *tag, bus_space_handle_t handle,
416 bus_size_t offset)
417 {
418 return (*(volatile u_int32_t *)(handle + offset));
419 }
420
421
422 /*
423 * Read `count' 1, 2, 4, or 8 byte quantities from bus space
424 * described by tag/handle/offset and copy into buffer provided.
425 */
426 static void
427 rmi_bus_space_read_multi_1(void *tag, bus_space_handle_t handle,
428 bus_size_t offset, u_int8_t *addr, size_t count)
429 {
430 TODO();
431 }
432
433 static void
434 rmi_bus_space_read_multi_2(void *tag, bus_space_handle_t handle,
435 bus_size_t offset, u_int16_t *addr, size_t count)
436 {
437 TODO();
438 }
439
440 static void
441 rmi_bus_space_read_multi_4(void *tag, bus_space_handle_t handle,
442 bus_size_t offset, u_int32_t *addr, size_t count)
443 {
444 TODO();
445 }
446
447 /*
448 * Write the 1, 2, 4, or 8 byte value `value' to bus space
449 * described by tag/handle/offset.
450 */
451
452 static void
453 rmi_bus_space_write_1(void *tag, bus_space_handle_t handle,
454 bus_size_t offset, u_int8_t value)
455 {
456 *(volatile u_int8_t *)(handle + offset) = value;
457 }
458
459 static void
460 rmi_bus_space_write_2(void *tag, bus_space_handle_t handle,
461 bus_size_t offset, u_int16_t value)
462 {
463 *(volatile u_int16_t *)(handle + offset) = value;
464 }
465
466 static void
467 rmi_bus_space_write_4(void *tag, bus_space_handle_t handle,
468 bus_size_t offset, u_int32_t value)
469 {
470 *(volatile u_int32_t *)(handle + offset) = value;
471 }
472
473
474 /*
475 * Write `count' 1, 2, 4, or 8 byte quantities from the buffer
476 * provided to bus space described by tag/handle/offset.
477 */
478
479
480 static void
481 rmi_bus_space_write_multi_1(void *tag, bus_space_handle_t handle,
482 bus_size_t offset, const u_int8_t *addr, size_t count)
483 {
484 TODO();
485 }
486
487 static void
488 rmi_bus_space_write_multi_2(void *tag, bus_space_handle_t handle,
489 bus_size_t offset, const u_int16_t *addr, size_t count)
490 {
491 TODO();
492 }
493
494 static void
495 rmi_bus_space_write_multi_4(void *tag, bus_space_handle_t handle,
496 bus_size_t offset, const u_int32_t *addr, size_t count)
497 {
498 TODO();
499 }
500
501 /*
502 * Write `count' 1, 2, 4, or 8 byte value `val' to bus space described
503 * by tag/handle starting at `offset'.
504 */
505
506 static void
507 rmi_bus_space_set_region_2(void *t, bus_space_handle_t bsh,
508 bus_size_t offset, u_int16_t value, size_t count)
509 {
510 bus_addr_t addr = bsh + offset;
511
512 for (; count != 0; count--, addr += 2)
513 (*(volatile u_int32_t *)(addr)) = value;
514 }
515
516 static void
517 rmi_bus_space_set_region_4(void *t, bus_space_handle_t bsh,
518 bus_size_t offset, u_int32_t value, size_t count)
519 {
520 bus_addr_t addr = bsh + offset;
521
522 for (; count != 0; count--, addr += 4)
523 (*(volatile u_int32_t *)(addr)) = value;
524 }
525
526
527 /*
528 * Copy `count' 1, 2, 4, or 8 byte values from bus space starting
529 * at tag/bsh1/off1 to bus space starting at tag/bsh2/off2.
530 */
531 static void
532 rmi_bus_space_copy_region_2(void *t, bus_space_handle_t bsh1,
533 bus_size_t off1, bus_space_handle_t bsh2,
534 bus_size_t off2, size_t count)
535 {
536 printf("bus_space_copy_region_2 - unimplemented\n");
537 }
538
539 /*
540 * Read `count' 1, 2, 4, or 8 byte quantities from bus space
541 * described by tag/handle/offset and copy into buffer provided.
542 */
543
544 u_int8_t
545 rmi_bus_space_read_stream_1(void *t, bus_space_handle_t handle,
546 bus_size_t offset)
547 {
548
549 return *((volatile u_int8_t *)(handle + offset));
550 }
551
552
553 static u_int16_t
554 rmi_bus_space_read_stream_2(void *t, bus_space_handle_t handle,
555 bus_size_t offset)
556 {
557 return *(volatile u_int16_t *)(handle + offset);
558 }
559
560
561 static u_int32_t
562 rmi_bus_space_read_stream_4(void *t, bus_space_handle_t handle,
563 bus_size_t offset)
564 {
565 return (*(volatile u_int32_t *)(handle + offset));
566 }
567
568
569 static void
570 rmi_bus_space_read_multi_stream_1(void *tag, bus_space_handle_t handle,
571 bus_size_t offset, u_int8_t *addr, size_t count)
572 {
573 TODO();
574 }
575
576 static void
577 rmi_bus_space_read_multi_stream_2(void *tag, bus_space_handle_t handle,
578 bus_size_t offset, u_int16_t *addr, size_t count)
579 {
580 TODO();
581 }
582
583 static void
584 rmi_bus_space_read_multi_stream_4(void *tag, bus_space_handle_t handle,
585 bus_size_t offset, u_int32_t *addr, size_t count)
586 {
587 TODO();
588 }
589
590
591 /*
592 * Read `count' 1, 2, 4, or 8 byte quantities from bus space
593 * described by tag/handle and starting at `offset' and copy into
594 * buffer provided.
595 */
596 void
597 rmi_bus_space_read_region_1(void *t, bus_space_handle_t bsh,
598 bus_size_t offset, u_int8_t *addr, size_t count)
599 {
600 TODO();
601 }
602
603 void
604 rmi_bus_space_read_region_2(void *t, bus_space_handle_t bsh,
605 bus_size_t offset, u_int16_t *addr, size_t count)
606 {
607 TODO();
608 }
609
610 void
611 rmi_bus_space_read_region_4(void *t, bus_space_handle_t bsh,
612 bus_size_t offset, u_int32_t *addr, size_t count)
613 {
614 bus_addr_t baddr = bsh + offset;
615
616 while (count--) {
617 *addr++ = (*(volatile u_int32_t *)(baddr));
618 baddr += 4;
619 }
620 }
621
622 void
623 rmi_bus_space_write_stream_1(void *t, bus_space_handle_t handle,
624 bus_size_t offset, u_int8_t value)
625 {
626 TODO();
627 }
628
629
630 static void
631 rmi_bus_space_write_stream_2(void *t, bus_space_handle_t handle,
632 bus_size_t offset, u_int16_t value)
633 {
634 TODO();
635 }
636
637
638 static void
639 rmi_bus_space_write_stream_4(void *t, bus_space_handle_t handle,
640 bus_size_t offset, u_int32_t value)
641 {
642 TODO();
643 }
644
645
646 static void
647 rmi_bus_space_write_multi_stream_1(void *tag, bus_space_handle_t handle,
648 bus_size_t offset, const u_int8_t *addr, size_t count)
649 {
650 TODO();
651 }
652
653 static void
654 rmi_bus_space_write_multi_stream_2(void *tag, bus_space_handle_t handle,
655 bus_size_t offset, const u_int16_t *addr, size_t count)
656 {
657 TODO();
658 }
659
660 static void
661 rmi_bus_space_write_multi_stream_4(void *tag, bus_space_handle_t handle,
662 bus_size_t offset, const u_int32_t *addr, size_t count)
663 {
664 TODO();
665 }
666
667 void
668 rmi_bus_space_write_region_2(void *t,
669 bus_space_handle_t bsh,
670 bus_size_t offset,
671 const u_int16_t *addr,
672 size_t count)
673 {
674 TODO();
675 }
676
677 void
678 rmi_bus_space_write_region_4(void *t, bus_space_handle_t bsh,
679 bus_size_t offset, const u_int32_t *addr, size_t count)
680 {
681 TODO();
682 }
683
684 static void
685 rmi_bus_space_barrier(void *tag __unused, bus_space_handle_t bsh __unused,
686 bus_size_t offset __unused, bus_size_t len __unused, int flags)
687 {
688 }
689
690 /*
691 * need a special bus space for this, because the Netlogic SoC
692 * UART allows only 32 bit access to its registers
693 */
694
695 static u_int8_t
696 rmi_uart_bus_space_read_1(void *tag, bus_space_handle_t handle,
697 bus_size_t offset)
698 {
699 return (u_int8_t)(*(volatile u_int32_t *)(handle + offset));
700 }
701
702 static void
703 rmi_uart_bus_space_write_1(void *tag, bus_space_handle_t handle,
704 bus_size_t offset, u_int8_t value)
705 {
706 *(volatile u_int32_t *)(handle + offset) = value;
707 }
708
709 static struct bus_space local_rmi_uart_bus_space = {
710 /* cookie */
711 (void *)0,
712
713 /* mapping/unmapping */
714 rmi_bus_space_map,
715 rmi_bus_space_unmap,
716 rmi_bus_space_subregion,
717
718 /* allocation/deallocation */
719 NULL,
720 NULL,
721
722 /* barrier */
723 rmi_bus_space_barrier,
724
725 /* read (single) */
726 rmi_uart_bus_space_read_1, NULL, NULL, NULL,
727
728 /* read multiple */
729 NULL, NULL, NULL, NULL,
730
731 /* read region */
732 NULL, NULL, NULL, NULL,
733
734 /* write (single) */
735 rmi_uart_bus_space_write_1, NULL, NULL, NULL,
736
737 /* write multiple */
738 NULL, NULL, NULL, NULL,
739
740 /* write region */
741 NULL, NULL, NULL, NULL,
742
743 /* set multiple */
744 NULL, NULL, NULL, NULL,
745
746 /* set region */
747 NULL, NULL, NULL, NULL,
748
749 /* copy */
750 NULL, NULL, NULL, NULL,
751
752 /* read (single) stream */
753 NULL, NULL, NULL, NULL,
754
755 /* read multiple stream */
756 NULL, NULL, NULL, NULL,
757
758 /* read region stream */
759 NULL, NULL, NULL, NULL,
760
761 /* write (single) stream */
762 NULL, NULL, NULL, NULL,
763
764 /* write multiple stream */
765 NULL, NULL, NULL, NULL,
766
767 /* write region stream */
768 NULL, NULL, NULL, NULL,
769 };
770
771 /* generic bus_space tag */
772 bus_space_tag_t rmi_uart_bus_space = &local_rmi_uart_bus_space;
Cache object: 610da1877cdb248716273dcae7315eb1
|