1 /*-
2 * Copyright (c) 2005 Peter Grehan
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 */
27
28 #include <sys/cdefs.h>
29 __FBSDID("$FreeBSD$");
30
31 /*
32 * Dispatch MI pmap calls to the appropriate MMU implementation
33 * through a previously registered kernel object.
34 *
35 * Before pmap_bootstrap() can be called, a CPU module must have
36 * called pmap_mmu_install(). This may be called multiple times:
37 * the highest priority call will be installed as the default
38 * MMU handler when pmap_bootstrap() is called.
39 *
40 * It is required that mutex_init() be called before pmap_bootstrap(),
41 * as the PMAP layer makes extensive use of mutexes.
42 */
43
44 #include <sys/param.h>
45 #include <sys/kernel.h>
46 #include <sys/lock.h>
47 #include <sys/ktr.h>
48 #include <sys/mutex.h>
49 #include <sys/systm.h>
50
51 #include <vm/vm.h>
52 #include <vm/vm_page.h>
53
54 #include <machine/mmuvar.h>
55 #include <machine/smp.h>
56
57 #include "mmu_if.h"
58
59 static mmu_def_t *mmu_def_impl;
60 static mmu_t mmu_obj;
61 static struct mmu_kobj mmu_kernel_obj;
62 static struct kobj_ops mmu_kernel_kops;
63
64 /*
65 * pmap globals
66 */
67 struct pmap kernel_pmap_store;
68
69 struct msgbuf *msgbufp;
70 vm_offset_t msgbuf_phys;
71
72 vm_offset_t kernel_vm_end;
73 vm_offset_t phys_avail[PHYS_AVAIL_SZ];
74 vm_offset_t virtual_avail;
75 vm_offset_t virtual_end;
76
77 int pmap_bootstrapped;
78
79 void
80 pmap_change_wiring(pmap_t pmap, vm_offset_t va, boolean_t wired)
81 {
82
83 CTR4(KTR_PMAP, "%s(%p, %#x, %u)", __func__, pmap, va, wired);
84 MMU_CHANGE_WIRING(mmu_obj, pmap, va, wired);
85 }
86
87 void
88 pmap_clear_modify(vm_page_t m)
89 {
90
91 CTR2(KTR_PMAP, "%s(%p)", __func__, m);
92 MMU_CLEAR_MODIFY(mmu_obj, m);
93 }
94
95 void
96 pmap_clear_reference(vm_page_t m)
97 {
98
99 CTR2(KTR_PMAP, "%s(%p)", __func__, m);
100 MMU_CLEAR_REFERENCE(mmu_obj, m);
101 }
102
103 void
104 pmap_copy(pmap_t dst_pmap, pmap_t src_pmap, vm_offset_t dst_addr,
105 vm_size_t len, vm_offset_t src_addr)
106 {
107
108 CTR6(KTR_PMAP, "%s(%p, %p, %#x, %#x, %#x)", __func__, dst_pmap,
109 src_pmap, dst_addr, len, src_addr);
110 MMU_COPY(mmu_obj, dst_pmap, src_pmap, dst_addr, len, src_addr);
111 }
112
113 void
114 pmap_copy_page(vm_page_t src, vm_page_t dst)
115 {
116
117 CTR3(KTR_PMAP, "%s(%p, %p)", __func__, src, dst);
118 MMU_COPY_PAGE(mmu_obj, src, dst);
119 }
120
121 void
122 pmap_enter(pmap_t pmap, vm_offset_t va, vm_prot_t access, vm_page_t p,
123 vm_prot_t prot, boolean_t wired)
124 {
125
126 CTR6(KTR_PMAP, "pmap_enter(%p, %#x, %#x, %p, %#x, %u)", pmap, va,
127 access, p, prot, wired);
128 MMU_ENTER(mmu_obj, pmap, va, p, prot, wired);
129 }
130
131 void
132 pmap_enter_object(pmap_t pmap, vm_offset_t start, vm_offset_t end,
133 vm_page_t m_start, vm_prot_t prot)
134 {
135
136 CTR6(KTR_PMAP, "%s(%p, %#x, %#x, %p, %#x)", __func__, pmap, start,
137 end, m_start, prot);
138 MMU_ENTER_OBJECT(mmu_obj, pmap, start, end, m_start, prot);
139 }
140
141 void
142 pmap_enter_quick(pmap_t pmap, vm_offset_t va, vm_page_t m, vm_prot_t prot)
143 {
144
145 CTR5(KTR_PMAP, "%s(%p, %#x, %p, %#x)", __func__, pmap, va, m, prot);
146 MMU_ENTER_QUICK(mmu_obj, pmap, va, m, prot);
147 }
148
149 vm_paddr_t
150 pmap_extract(pmap_t pmap, vm_offset_t va)
151 {
152
153 CTR3(KTR_PMAP, "%s(%p, %#x)", __func__, pmap, va);
154 return (MMU_EXTRACT(mmu_obj, pmap, va));
155 }
156
157 vm_page_t
158 pmap_extract_and_hold(pmap_t pmap, vm_offset_t va, vm_prot_t prot)
159 {
160
161 CTR4(KTR_PMAP, "%s(%p, %#x, %#x)", __func__, pmap, va, prot);
162 return (MMU_EXTRACT_AND_HOLD(mmu_obj, pmap, va, prot));
163 }
164
165 void
166 pmap_growkernel(vm_offset_t va)
167 {
168
169 CTR2(KTR_PMAP, "%s(%#x)", __func__, va);
170 MMU_GROWKERNEL(mmu_obj, va);
171 }
172
173 void
174 pmap_init(void)
175 {
176
177 CTR1(KTR_PMAP, "%s()", __func__);
178 MMU_INIT(mmu_obj);
179 }
180
181 boolean_t
182 pmap_is_modified(vm_page_t m)
183 {
184
185 CTR2(KTR_PMAP, "%s(%p)", __func__, m);
186 return (MMU_IS_MODIFIED(mmu_obj, m));
187 }
188
189 boolean_t
190 pmap_is_prefaultable(pmap_t pmap, vm_offset_t va)
191 {
192
193 CTR3(KTR_PMAP, "%s(%p, %#x)", __func__, pmap, va);
194 return (MMU_IS_PREFAULTABLE(mmu_obj, pmap, va));
195 }
196
197 boolean_t
198 pmap_ts_referenced(vm_page_t m)
199 {
200
201 CTR2(KTR_PMAP, "%s(%p)", __func__, m);
202 return (MMU_TS_REFERENCED(mmu_obj, m));
203 }
204
205 vm_offset_t
206 pmap_map(vm_offset_t *virt, vm_paddr_t start, vm_paddr_t end, int prot)
207 {
208
209 CTR5(KTR_PMAP, "%s(%p, %#x, %#x, %#x)", __func__, virt, start, end,
210 prot);
211 return (MMU_MAP(mmu_obj, virt, start, end, prot));
212 }
213
214 void
215 pmap_object_init_pt(pmap_t pmap, vm_offset_t addr, vm_object_t object,
216 vm_pindex_t pindex, vm_size_t size)
217 {
218
219 CTR6(KTR_PMAP, "%s(%p, %#x, %p, %u, %#x)", __func__, pmap, addr,
220 object, pindex, size);
221 MMU_OBJECT_INIT_PT(mmu_obj, pmap, addr, object, pindex, size);
222 }
223
224 boolean_t
225 pmap_page_exists_quick(pmap_t pmap, vm_page_t m)
226 {
227
228 CTR3(KTR_PMAP, "%s(%p, %p)", __func__, pmap, m);
229 return (MMU_PAGE_EXISTS_QUICK(mmu_obj, pmap, m));
230 }
231
232 void
233 pmap_page_init(vm_page_t m)
234 {
235
236 CTR2(KTR_PMAP, "%s(%p)", __func__, m);
237 MMU_PAGE_INIT(mmu_obj, m);
238 }
239
240 int
241 pmap_page_wired_mappings(vm_page_t m)
242 {
243
244 CTR2(KTR_PMAP, "%s(%p)", __func__, m);
245 return (MMU_PAGE_WIRED_MAPPINGS(mmu_obj, m));
246 }
247
248 int
249 pmap_pinit(pmap_t pmap)
250 {
251
252 CTR2(KTR_PMAP, "%s(%p)", __func__, pmap);
253 MMU_PINIT(mmu_obj, pmap);
254 return (1);
255 }
256
257 void
258 pmap_pinit0(pmap_t pmap)
259 {
260
261 CTR2(KTR_PMAP, "%s(%p)", __func__, pmap);
262 MMU_PINIT0(mmu_obj, pmap);
263 }
264
265 void
266 pmap_protect(pmap_t pmap, vm_offset_t start, vm_offset_t end, vm_prot_t prot)
267 {
268
269 CTR5(KTR_PMAP, "%s(%p, %#x, %#x, %#x)", __func__, pmap, start, end,
270 prot);
271 MMU_PROTECT(mmu_obj, pmap, start, end, prot);
272 }
273
274 void
275 pmap_qenter(vm_offset_t start, vm_page_t *m, int count)
276 {
277
278 CTR4(KTR_PMAP, "%s(%#x, %p, %d)", __func__, start, m, count);
279 MMU_QENTER(mmu_obj, start, m, count);
280 }
281
282 void
283 pmap_qremove(vm_offset_t start, int count)
284 {
285
286 CTR3(KTR_PMAP, "%s(%#x, %d)", __func__, start, count);
287 MMU_QREMOVE(mmu_obj, start, count);
288 }
289
290 void
291 pmap_release(pmap_t pmap)
292 {
293
294 CTR2(KTR_PMAP, "%s(%p)", __func__, pmap);
295 MMU_RELEASE(mmu_obj, pmap);
296 }
297
298 void
299 pmap_remove(pmap_t pmap, vm_offset_t start, vm_offset_t end)
300 {
301
302 CTR4(KTR_PMAP, "%s(%p, %#x, %#x)", __func__, pmap, start, end);
303 MMU_REMOVE(mmu_obj, pmap, start, end);
304 }
305
306 void
307 pmap_remove_all(vm_page_t m)
308 {
309
310 CTR2(KTR_PMAP, "%s(%p)", __func__, m);
311 MMU_REMOVE_ALL(mmu_obj, m);
312 }
313
314 void
315 pmap_remove_pages(pmap_t pmap)
316 {
317
318 CTR2(KTR_PMAP, "%s(%p)", __func__, pmap);
319 MMU_REMOVE_PAGES(mmu_obj, pmap);
320 }
321
322 void
323 pmap_remove_write(vm_page_t m)
324 {
325
326 CTR2(KTR_PMAP, "%s(%p)", __func__, m);
327 MMU_REMOVE_WRITE(mmu_obj, m);
328 }
329
330 void
331 pmap_zero_page(vm_page_t m)
332 {
333
334 CTR2(KTR_PMAP, "%s(%p)", __func__, m);
335 MMU_ZERO_PAGE(mmu_obj, m);
336 }
337
338 void
339 pmap_zero_page_area(vm_page_t m, int off, int size)
340 {
341
342 CTR4(KTR_PMAP, "%s(%p, %d, %d)", __func__, m, off, size);
343 MMU_ZERO_PAGE_AREA(mmu_obj, m, off, size);
344 }
345
346 void
347 pmap_zero_page_idle(vm_page_t m)
348 {
349
350 CTR2(KTR_PMAP, "%s(%p)", __func__, m);
351 MMU_ZERO_PAGE_IDLE(mmu_obj, m);
352 }
353
354 int
355 pmap_mincore(pmap_t pmap, vm_offset_t addr)
356 {
357
358 CTR3(KTR_PMAP, "%s(%p, %#x)", __func__, pmap, addr);
359 return (MMU_MINCORE(mmu_obj, pmap, addr));
360 }
361
362 void
363 pmap_activate(struct thread *td)
364 {
365
366 CTR2(KTR_PMAP, "%s(%p)", __func__, td);
367 MMU_ACTIVATE(mmu_obj, td);
368 }
369
370 void
371 pmap_deactivate(struct thread *td)
372 {
373
374 CTR2(KTR_PMAP, "%s(%p)", __func__, td);
375 MMU_DEACTIVATE(mmu_obj, td);
376 }
377
378 /*
379 * Increase the starting virtual address of the given mapping if a
380 * different alignment might result in more superpage mappings.
381 */
382 void
383 pmap_align_superpage(vm_object_t object, vm_ooffset_t offset,
384 vm_offset_t *addr, vm_size_t size)
385 {
386
387 CTR5(KTR_PMAP, "%s(%p, %#x, %p, %#x)", __func__, object, offset, addr,
388 size);
389 MMU_ALIGN_SUPERPAGE(mmu_obj, object, offset, addr, size);
390 }
391
392 /*
393 * Routines used in machine-dependent code
394 */
395 void
396 pmap_bootstrap(vm_offset_t start, vm_offset_t end)
397 {
398 mmu_obj = &mmu_kernel_obj;
399
400 /*
401 * Take care of compiling the selected class, and
402 * then statically initialise the MMU object
403 */
404 kobj_class_compile_static(mmu_def_impl, &mmu_kernel_kops);
405 kobj_init_static((kobj_t)mmu_obj, mmu_def_impl);
406
407 MMU_BOOTSTRAP(mmu_obj, start, end);
408 }
409
410 void
411 pmap_cpu_bootstrap(int ap)
412 {
413 /*
414 * No KTR here because our console probably doesn't work yet
415 */
416
417 return (MMU_CPU_BOOTSTRAP(mmu_obj, ap));
418 }
419
420 void *
421 pmap_mapdev(vm_offset_t pa, vm_size_t size)
422 {
423
424 CTR3(KTR_PMAP, "%s(%#x, %#x)", __func__, pa, size);
425 return (MMU_MAPDEV(mmu_obj, pa, size));
426 }
427
428 void *
429 pmap_mapdev_attr(vm_offset_t pa, vm_size_t size, vm_memattr_t attr)
430 {
431
432 CTR4(KTR_PMAP, "%s(%#x, %#x, %#x)", __func__, pa, size, attr);
433 return (MMU_MAPDEV_ATTR(mmu_obj, pa, size, attr));
434 }
435
436 void
437 pmap_page_set_memattr(vm_page_t m, vm_memattr_t ma)
438 {
439
440 CTR3(KTR_PMAP, "%s(%p, %#x)", __func__, m, ma);
441 return (MMU_PAGE_SET_MEMATTR(mmu_obj, m, ma));
442 }
443
444 void
445 pmap_unmapdev(vm_offset_t va, vm_size_t size)
446 {
447
448 CTR3(KTR_PMAP, "%s(%#x, %#x)", __func__, va, size);
449 MMU_UNMAPDEV(mmu_obj, va, size);
450 }
451
452 vm_offset_t
453 pmap_kextract(vm_offset_t va)
454 {
455
456 CTR2(KTR_PMAP, "%s(%#x)", __func__, va);
457 return (MMU_KEXTRACT(mmu_obj, va));
458 }
459
460 void
461 pmap_kenter(vm_offset_t va, vm_offset_t pa)
462 {
463
464 CTR3(KTR_PMAP, "%s(%#x, %#x)", __func__, va, pa);
465 MMU_KENTER(mmu_obj, va, pa);
466 }
467
468 void
469 pmap_kenter_attr(vm_offset_t va, vm_offset_t pa, vm_memattr_t ma)
470 {
471
472 CTR4(KTR_PMAP, "%s(%#x, %#x, %#x)", __func__, va, pa, ma);
473 MMU_KENTER_ATTR(mmu_obj, va, pa, ma);
474 }
475
476 boolean_t
477 pmap_dev_direct_mapped(vm_offset_t pa, vm_size_t size)
478 {
479
480 CTR3(KTR_PMAP, "%s(%#x, %#x)", __func__, pa, size);
481 return (MMU_DEV_DIRECT_MAPPED(mmu_obj, pa, size));
482 }
483
484 void
485 pmap_sync_icache(pmap_t pm, vm_offset_t va, vm_size_t sz)
486 {
487
488 CTR4(KTR_PMAP, "%s(%p, %#x, %#x)", __func__, pm, va, sz);
489 return (MMU_SYNC_ICACHE(mmu_obj, pm, va, sz));
490 }
491
492 vm_offset_t
493 pmap_dumpsys_map(struct pmap_md *md, vm_size_t ofs, vm_size_t *sz)
494 {
495
496 CTR4(KTR_PMAP, "%s(%p, %#x, %#x)", __func__, md, ofs, *sz);
497 return (MMU_DUMPSYS_MAP(mmu_obj, md, ofs, sz));
498 }
499
500 void
501 pmap_dumpsys_unmap(struct pmap_md *md, vm_size_t ofs, vm_offset_t va)
502 {
503
504 CTR4(KTR_PMAP, "%s(%p, %#x, %#x)", __func__, md, ofs, va);
505 return (MMU_DUMPSYS_UNMAP(mmu_obj, md, ofs, va));
506 }
507
508 struct pmap_md *
509 pmap_scan_md(struct pmap_md *prev)
510 {
511
512 CTR2(KTR_PMAP, "%s(%p)", __func__, prev);
513 return (MMU_SCAN_MD(mmu_obj, prev));
514 }
515
516 /*
517 * MMU install routines. Highest priority wins, equal priority also
518 * overrides allowing last-set to win.
519 */
520 SET_DECLARE(mmu_set, mmu_def_t);
521
522 boolean_t
523 pmap_mmu_install(char *name, int prio)
524 {
525 mmu_def_t **mmupp, *mmup;
526 static int curr_prio = 0;
527
528 /*
529 * Try and locate the MMU kobj corresponding to the name
530 */
531 SET_FOREACH(mmupp, mmu_set) {
532 mmup = *mmupp;
533
534 if (mmup->name &&
535 !strcmp(mmup->name, name) &&
536 (prio >= curr_prio || mmu_def_impl == NULL)) {
537 curr_prio = prio;
538 mmu_def_impl = mmup;
539 return (TRUE);
540 }
541 }
542
543 return (FALSE);
544 }
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