1 /* $NetBSD: bus.h,v 1.12 1997/10/01 08:25:15 fvdl Exp $ */
2 /*-
3 * $Id: bus.h,v 1.6 2007/08/09 11:23:32 katta Exp $
4 *
5 * Copyright (c) 1996, 1997 The NetBSD Foundation, Inc.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to The NetBSD Foundation
9 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
10 * NASA Ames Research Center.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. All advertising materials mentioning features or use of this software
21 * must display the following acknowledgement:
22 * This product includes software developed by the NetBSD
23 * Foundation, Inc. and its contributors.
24 * 4. Neither the name of The NetBSD Foundation nor the names of its
25 * contributors may be used to endorse or promote products derived
26 * from this software without specific prior written permission.
27 *
28 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
29 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
30 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
31 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
32 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
33 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
34 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
35 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
36 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
37 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
38 * POSSIBILITY OF SUCH DAMAGE.
39 */
40
41 /*
42 * Copyright (c) 1996 Charles M. Hannum. All rights reserved.
43 * Copyright (c) 1996 Christopher G. Demetriou. All rights reserved.
44 *
45 * Redistribution and use in source and binary forms, with or without
46 * modification, are permitted provided that the following conditions
47 * are met:
48 * 1. Redistributions of source code must retain the above copyright
49 * notice, this list of conditions and the following disclaimer.
50 * 2. Redistributions in binary form must reproduce the above copyright
51 * notice, this list of conditions and the following disclaimer in the
52 * documentation and/or other materials provided with the distribution.
53 * 3. All advertising materials mentioning features or use of this software
54 * must display the following acknowledgement:
55 * This product includes software developed by Christopher G. Demetriou
56 * for the NetBSD Project.
57 * 4. The name of the author may not be used to endorse or promote products
58 * derived from this software without specific prior written permission
59 *
60 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
61 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
62 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
63 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
64 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
65 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
66 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
67 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
68 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
69 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
70 *
71 * from: src/sys/alpha/include/bus.h,v 1.5 1999/08/28 00:38:40 peter
72 * $FreeBSD: releng/8.2/sys/mips/cavium/octopci_bus_space.c 215938 2010-11-27 12:26:40Z jchandra $
73 */
74 #include <sys/cdefs.h>
75 __FBSDID("$FreeBSD: releng/8.2/sys/mips/cavium/octopci_bus_space.c 215938 2010-11-27 12:26:40Z jchandra $");
76
77 #include <sys/param.h>
78 #include <sys/systm.h>
79 #include <sys/bus.h>
80 #include <sys/kernel.h>
81 #include <sys/malloc.h>
82 #include <sys/ktr.h>
83 #include <sys/endian.h>
84
85 #include <vm/vm.h>
86 #include <vm/pmap.h>
87 #include <vm/vm_kern.h>
88 #include <vm/vm_extern.h>
89
90 #include <machine/bus.h>
91 #include <machine/cache.h>
92
93 #include <mips/cavium/octopcivar.h>
94
95 #include <contrib/octeon-sdk/cvmx.h>
96
97 static struct bus_space octopci_space = {
98 /* cookie */
99 (void *) 0,
100
101 /* mapping/unmapping */
102 octopci_bs_map,
103 octopci_bs_unmap,
104 octopci_bs_subregion,
105
106 /* allocation/deallocation */
107 NULL,
108 NULL,
109
110 /* barrier */
111 octopci_bs_barrier,
112
113 /* read (single) */
114 octopci_bs_r_1,
115 octopci_bs_r_2,
116 octopci_bs_r_4,
117 NULL,
118
119 /* read multiple */
120 octopci_bs_rm_1,
121 octopci_bs_rm_2,
122 octopci_bs_rm_4,
123 NULL,
124
125 /* read region */
126 octopci_bs_rr_1,
127 octopci_bs_rr_2,
128 octopci_bs_rr_4,
129 NULL,
130
131 /* write (single) */
132 octopci_bs_w_1,
133 octopci_bs_w_2,
134 octopci_bs_w_4,
135 NULL,
136
137 /* write multiple */
138 octopci_bs_wm_1,
139 octopci_bs_wm_2,
140 octopci_bs_wm_4,
141 NULL,
142
143 /* write region */
144 NULL,
145 octopci_bs_wr_2,
146 octopci_bs_wr_4,
147 NULL,
148
149 /* set multiple */
150 NULL,
151 NULL,
152 NULL,
153 NULL,
154
155 /* set region */
156 NULL,
157 octopci_bs_sr_2,
158 octopci_bs_sr_4,
159 NULL,
160
161 /* copy */
162 NULL,
163 octopci_bs_c_2,
164 NULL,
165 NULL,
166
167 /* read (single) stream */
168 octopci_bs_r_1,
169 octopci_bs_r_2,
170 octopci_bs_r_4,
171 NULL,
172
173 /* read multiple stream */
174 octopci_bs_rm_1,
175 octopci_bs_rm_2,
176 octopci_bs_rm_4,
177 NULL,
178
179 /* read region stream */
180 octopci_bs_rr_1,
181 octopci_bs_rr_2,
182 octopci_bs_rr_4,
183 NULL,
184
185 /* write (single) stream */
186 octopci_bs_w_1,
187 octopci_bs_w_2,
188 octopci_bs_w_4,
189 NULL,
190
191 /* write multiple stream */
192 octopci_bs_wm_1,
193 octopci_bs_wm_2,
194 octopci_bs_wm_4,
195 NULL,
196
197 /* write region stream */
198 NULL,
199 octopci_bs_wr_2,
200 octopci_bs_wr_4,
201 NULL,
202 };
203
204 #define rd8(a) cvmx_read64_uint8(a)
205 #define rd16(a) le16toh(cvmx_read64_uint16(a))
206 #define rd32(a) le32toh(cvmx_read64_uint32(a))
207 #define wr8(a, v) cvmx_write64_uint8(a, v)
208 #define wr16(a, v) cvmx_write64_uint16(a, htole16(v))
209 #define wr32(a, v) cvmx_write64_uint32(a, htole32(v))
210
211 /* octopci bus_space tag */
212 bus_space_tag_t octopci_bus_space = &octopci_space;
213
214 int
215 octopci_bs_map(void *t __unused, bus_addr_t addr,
216 bus_size_t size __unused, int flags __unused,
217 bus_space_handle_t *bshp)
218 {
219
220 *bshp = addr;
221 return (0);
222 }
223
224 void
225 octopci_bs_unmap(void *t __unused, bus_space_handle_t bh __unused,
226 bus_size_t size __unused)
227 {
228
229 /* Do nothing */
230 }
231
232 int
233 octopci_bs_subregion(void *t __unused, bus_space_handle_t handle __unused,
234 bus_size_t offset __unused, bus_size_t size __unused,
235 bus_space_handle_t *nhandle __unused)
236 {
237
238 printf("SUBREGION?!?!?!\n");
239 /* Do nothing */
240 return (0);
241 }
242
243 uint8_t
244 octopci_bs_r_1(void *t, bus_space_handle_t handle,
245 bus_size_t offset)
246 {
247
248 return (rd8(handle + offset));
249 }
250
251 uint16_t
252 octopci_bs_r_2(void *t, bus_space_handle_t handle,
253 bus_size_t offset)
254 {
255
256 return (rd16(handle + offset));
257 }
258
259 uint32_t
260 octopci_bs_r_4(void *t, bus_space_handle_t handle,
261 bus_size_t offset)
262 {
263
264 return (rd32(handle + offset));
265 }
266
267
268 void
269 octopci_bs_rm_1(void *t, bus_space_handle_t bsh,
270 bus_size_t offset, uint8_t *addr, size_t count)
271 {
272
273 while (count--)
274 *addr++ = rd8(bsh + offset);
275 }
276
277 void
278 octopci_bs_rm_2(void *t, bus_space_handle_t bsh,
279 bus_size_t offset, uint16_t *addr, size_t count)
280 {
281 bus_addr_t baddr = bsh + offset;
282
283 while (count--)
284 *addr++ = rd16(baddr);
285 }
286
287 void
288 octopci_bs_rm_4(void *t, bus_space_handle_t bsh,
289 bus_size_t offset, uint32_t *addr, size_t count)
290 {
291 bus_addr_t baddr = bsh + offset;
292
293 while (count--)
294 *addr++ = rd32(baddr);
295 }
296
297
298 /*
299 * Read `count' 1, 2, 4, or 8 byte quantities from bus space
300 * described by tag/handle and starting at `offset' and copy into
301 * buffer provided.
302 */
303 void
304 octopci_bs_rr_1(void *t, bus_space_handle_t bsh,
305 bus_size_t offset, uint8_t *addr, size_t count)
306 {
307 bus_addr_t baddr = bsh + offset;
308
309 while (count--) {
310 *addr++ = rd8(baddr);
311 baddr += 1;
312 }
313 }
314
315 void
316 octopci_bs_rr_2(void *t, bus_space_handle_t bsh,
317 bus_size_t offset, uint16_t *addr, size_t count)
318 {
319 bus_addr_t baddr = bsh + offset;
320
321 while (count--) {
322 *addr++ = rd16(baddr);
323 baddr += 2;
324 }
325 }
326
327 void
328 octopci_bs_rr_4(void *t, bus_space_handle_t bsh,
329 bus_size_t offset, uint32_t *addr, size_t count)
330 {
331 bus_addr_t baddr = bsh + offset;
332
333 while (count--) {
334 *addr++ = rd32(baddr);
335 baddr += 4;
336 }
337 }
338
339 /*
340 * Write the 1, 2, 4, or 8 byte value `value' to bus space
341 * described by tag/handle/offset.
342 */
343 void
344 octopci_bs_w_1(void *t, bus_space_handle_t bsh,
345 bus_size_t offset, uint8_t value)
346 {
347
348 wr8(bsh + offset, value);
349 }
350
351 void
352 octopci_bs_w_2(void *t, bus_space_handle_t bsh,
353 bus_size_t offset, uint16_t value)
354 {
355
356 wr16(bsh + offset, value);
357 }
358
359 void
360 octopci_bs_w_4(void *t, bus_space_handle_t bsh,
361 bus_size_t offset, uint32_t value)
362 {
363
364 wr32(bsh + offset, value);
365 }
366
367 /*
368 * Write `count' 1, 2, 4, or 8 byte quantities from the buffer
369 * provided to bus space described by tag/handle/offset.
370 */
371 void
372 octopci_bs_wm_1(void *t, bus_space_handle_t bsh,
373 bus_size_t offset, const uint8_t *addr, size_t count)
374 {
375 bus_addr_t baddr = bsh + offset;
376
377 while (count--)
378 wr8(baddr, *addr++);
379 }
380
381 void
382 octopci_bs_wm_2(void *t, bus_space_handle_t bsh,
383 bus_size_t offset, const uint16_t *addr, size_t count)
384 {
385 bus_addr_t baddr = bsh + offset;
386
387 while (count--)
388 wr16(baddr, *addr++);
389 }
390
391 void
392 octopci_bs_wm_4(void *t, bus_space_handle_t bsh,
393 bus_size_t offset, const uint32_t *addr, size_t count)
394 {
395 bus_addr_t baddr = bsh + offset;
396
397 while (count--)
398 wr32(baddr, *addr++);
399 }
400
401 /*
402 * Write `count' 1, 2, 4, or 8 byte quantities from the buffer provided
403 * to bus space described by tag/handle starting at `offset'.
404 */
405 void
406 octopci_bs_wr_1(void *t, bus_space_handle_t bsh,
407 bus_size_t offset, const uint8_t *addr, size_t count)
408 {
409 bus_addr_t baddr = bsh + offset;
410
411 while (count--) {
412 wr8(baddr, *addr++);
413 baddr += 1;
414 }
415 }
416
417 void
418 octopci_bs_wr_2(void *t, bus_space_handle_t bsh,
419 bus_size_t offset, const uint16_t *addr, size_t count)
420 {
421 bus_addr_t baddr = bsh + offset;
422
423 while (count--) {
424 wr16(baddr, *addr++);
425 baddr += 2;
426 }
427 }
428
429 void
430 octopci_bs_wr_4(void *t, bus_space_handle_t bsh,
431 bus_size_t offset, const uint32_t *addr, size_t count)
432 {
433 bus_addr_t baddr = bsh + offset;
434
435 while (count--) {
436 wr32(baddr, *addr++);
437 baddr += 4;
438 }
439 }
440
441 /*
442 * Write the 1, 2, 4, or 8 byte value `val' to bus space described
443 * by tag/handle/offset `count' times.
444 */
445 void
446 octopci_bs_sm_1(void *t, bus_space_handle_t bsh,
447 bus_size_t offset, uint8_t value, size_t count)
448 {
449 bus_addr_t addr = bsh + offset;
450
451 while (count--)
452 wr8(addr, value);
453 }
454
455 void
456 octopci_bs_sm_2(void *t, bus_space_handle_t bsh,
457 bus_size_t offset, uint16_t value, size_t count)
458 {
459 bus_addr_t addr = bsh + offset;
460
461 while (count--)
462 wr16(addr, value);
463 }
464
465 void
466 octopci_bs_sm_4(void *t, bus_space_handle_t bsh,
467 bus_size_t offset, uint32_t value, size_t count)
468 {
469 bus_addr_t addr = bsh + offset;
470
471 while (count--)
472 wr32(addr, value);
473 }
474
475 /*
476 * Write `count' 1, 2, 4, or 8 byte value `val' to bus space described
477 * by tag/handle starting at `offset'.
478 */
479 void
480 octopci_bs_sr_1(void *t, bus_space_handle_t bsh,
481 bus_size_t offset, uint8_t value, size_t count)
482 {
483 bus_addr_t addr = bsh + offset;
484
485 for (; count != 0; count--, addr++)
486 wr8(addr, value);
487 }
488
489 void
490 octopci_bs_sr_2(void *t, bus_space_handle_t bsh,
491 bus_size_t offset, uint16_t value, size_t count)
492 {
493 bus_addr_t addr = bsh + offset;
494
495 for (; count != 0; count--, addr += 2)
496 wr16(addr, value);
497 }
498
499 void
500 octopci_bs_sr_4(void *t, bus_space_handle_t bsh,
501 bus_size_t offset, uint32_t value, size_t count)
502 {
503 bus_addr_t addr = bsh + offset;
504
505 for (; count != 0; count--, addr += 4)
506 wr32(addr, value);
507 }
508
509 /*
510 * Copy `count' 1, 2, 4, or 8 byte values from bus space starting
511 * at tag/bsh1/off1 to bus space starting at tag/bsh2/off2.
512 */
513 void
514 octopci_bs_c_1(void *t, bus_space_handle_t bsh1,
515 bus_size_t off1, bus_space_handle_t bsh2,
516 bus_size_t off2, size_t count)
517 {
518 bus_addr_t addr1 = bsh1 + off1;
519 bus_addr_t addr2 = bsh2 + off2;
520
521 if (addr1 >= addr2) {
522 /* src after dest: copy forward */
523 for (; count != 0; count--, addr1++, addr2++)
524 wr8(addr2, rd8(addr1));
525 } else {
526 /* dest after src: copy backwards */
527 for (addr1 += (count - 1), addr2 += (count - 1);
528 count != 0; count--, addr1--, addr2--)
529 wr8(addr2, rd8(addr1));
530 }
531 }
532
533 void
534 octopci_bs_c_2(void *t, bus_space_handle_t bsh1,
535 bus_size_t off1, bus_space_handle_t bsh2,
536 bus_size_t off2, size_t count)
537 {
538 bus_addr_t addr1 = bsh1 + off1;
539 bus_addr_t addr2 = bsh2 + off2;
540
541 if (addr1 >= addr2) {
542 /* src after dest: copy forward */
543 for (; count != 0; count--, addr1 += 2, addr2 += 2)
544 wr16(addr2, rd16(addr1));
545 } else {
546 /* dest after src: copy backwards */
547 for (addr1 += 2 * (count - 1), addr2 += 2 * (count - 1);
548 count != 0; count--, addr1 -= 2, addr2 -= 2)
549 wr16(addr2, rd16(addr1));
550 }
551 }
552
553 void
554 octopci_bs_c_4(void *t, bus_space_handle_t bsh1,
555 bus_size_t off1, bus_space_handle_t bsh2,
556 bus_size_t off2, size_t count)
557 {
558 bus_addr_t addr1 = bsh1 + off1;
559 bus_addr_t addr2 = bsh2 + off2;
560
561 if (addr1 >= addr2) {
562 /* src after dest: copy forward */
563 for (; count != 0; count--, addr1 += 4, addr2 += 4)
564 wr32(addr2, rd32(addr1));
565 } else {
566 /* dest after src: copy backwards */
567 for (addr1 += 4 * (count - 1), addr2 += 4 * (count - 1);
568 count != 0; count--, addr1 -= 4, addr2 -= 4)
569 wr32(addr2, rd32(addr1));
570 }
571 }
572
573 void
574 octopci_bs_barrier(void *t __unused,
575 bus_space_handle_t bsh __unused,
576 bus_size_t offset __unused, bus_size_t len __unused,
577 int flags)
578 {
579 #if 0
580 if (flags & BUS_SPACE_BARRIER_WRITE)
581 mips_dcache_wbinv_all();
582 #endif
583 }
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