2 * Copyright (c) 2005 Peter Grehan
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
28 #include <sys/cdefs.h>
29 __FBSDID("$FreeBSD$");
32 * Dispatch MI pmap calls to the appropriate MMU implementation
33 * through a previously registered kernel object.
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.
40 * It is required that mutex_init() be called before pmap_bootstrap(),
41 * as the PMAP layer makes extensive use of mutexes.
44 #include <sys/param.h>
45 #include <sys/kernel.h>
48 #include <sys/mutex.h>
49 #include <sys/systm.h>
52 #include <vm/vm_page.h>
54 #include <machine/mmuvar.h>
55 #include <machine/smp.h>
59 static mmu_def_t *mmu_def_impl;
61 static struct mmu_kobj mmu_kernel_obj;
62 static struct kobj_ops mmu_kernel_kops;
67 struct pmap kernel_pmap_store;
69 struct msgbuf *msgbufp;
70 vm_offset_t msgbuf_phys;
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;
77 int pmap_bootstrapped;
80 pmap_change_wiring(pmap_t pmap, vm_offset_t va, boolean_t wired)
83 CTR4(KTR_PMAP, "%s(%p, %#x, %u)", __func__, pmap, va, wired);
84 MMU_CHANGE_WIRING(mmu_obj, pmap, va, wired);
88 pmap_clear_modify(vm_page_t m)
91 CTR2(KTR_PMAP, "%s(%p)", __func__, m);
92 MMU_CLEAR_MODIFY(mmu_obj, m);
96 pmap_clear_reference(vm_page_t m)
99 CTR2(KTR_PMAP, "%s(%p)", __func__, m);
100 MMU_CLEAR_REFERENCE(mmu_obj, m);
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)
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);
114 pmap_copy_page(vm_page_t src, vm_page_t dst)
117 CTR3(KTR_PMAP, "%s(%p, %p)", __func__, src, dst);
118 MMU_COPY_PAGE(mmu_obj, src, dst);
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)
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);
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)
136 CTR6(KTR_PMAP, "%s(%p, %#x, %#x, %p, %#x)", __func__, pmap, start,
138 MMU_ENTER_OBJECT(mmu_obj, pmap, start, end, m_start, prot);
142 pmap_enter_quick(pmap_t pmap, vm_offset_t va, vm_page_t m, vm_prot_t prot)
145 CTR5(KTR_PMAP, "%s(%p, %#x, %p, %#x)", __func__, pmap, va, m, prot);
146 MMU_ENTER_QUICK(mmu_obj, pmap, va, m, prot);
150 pmap_extract(pmap_t pmap, vm_offset_t va)
153 CTR3(KTR_PMAP, "%s(%p, %#x)", __func__, pmap, va);
154 return (MMU_EXTRACT(mmu_obj, pmap, va));
158 pmap_extract_and_hold(pmap_t pmap, vm_offset_t va, vm_prot_t prot)
161 CTR4(KTR_PMAP, "%s(%p, %#x, %#x)", __func__, pmap, va, prot);
162 return (MMU_EXTRACT_AND_HOLD(mmu_obj, pmap, va, prot));
166 pmap_growkernel(vm_offset_t va)
169 CTR2(KTR_PMAP, "%s(%#x)", __func__, va);
170 MMU_GROWKERNEL(mmu_obj, va);
177 CTR1(KTR_PMAP, "%s()", __func__);
182 pmap_is_modified(vm_page_t m)
185 CTR2(KTR_PMAP, "%s(%p)", __func__, m);
186 return (MMU_IS_MODIFIED(mmu_obj, m));
190 pmap_is_prefaultable(pmap_t pmap, vm_offset_t va)
193 CTR3(KTR_PMAP, "%s(%p, %#x)", __func__, pmap, va);
194 return (MMU_IS_PREFAULTABLE(mmu_obj, pmap, va));
198 pmap_ts_referenced(vm_page_t m)
201 CTR2(KTR_PMAP, "%s(%p)", __func__, m);
202 return (MMU_TS_REFERENCED(mmu_obj, m));
206 pmap_map(vm_offset_t *virt, vm_paddr_t start, vm_paddr_t end, int prot)
209 CTR5(KTR_PMAP, "%s(%p, %#x, %#x, %#x)", __func__, virt, start, end,
211 return (MMU_MAP(mmu_obj, virt, start, end, prot));
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)
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);
225 pmap_page_exists_quick(pmap_t pmap, vm_page_t m)
228 CTR3(KTR_PMAP, "%s(%p, %p)", __func__, pmap, m);
229 return (MMU_PAGE_EXISTS_QUICK(mmu_obj, pmap, m));
233 pmap_page_init(vm_page_t m)
236 CTR2(KTR_PMAP, "%s(%p)", __func__, m);
237 MMU_PAGE_INIT(mmu_obj, m);
241 pmap_page_wired_mappings(vm_page_t m)
244 CTR2(KTR_PMAP, "%s(%p)", __func__, m);
245 return (MMU_PAGE_WIRED_MAPPINGS(mmu_obj, m));
249 pmap_pinit(pmap_t pmap)
252 CTR2(KTR_PMAP, "%s(%p)", __func__, pmap);
253 MMU_PINIT(mmu_obj, pmap);
258 pmap_pinit0(pmap_t pmap)
261 CTR2(KTR_PMAP, "%s(%p)", __func__, pmap);
262 MMU_PINIT0(mmu_obj, pmap);
266 pmap_protect(pmap_t pmap, vm_offset_t start, vm_offset_t end, vm_prot_t prot)
269 CTR5(KTR_PMAP, "%s(%p, %#x, %#x, %#x)", __func__, pmap, start, end,
271 MMU_PROTECT(mmu_obj, pmap, start, end, prot);
275 pmap_qenter(vm_offset_t start, vm_page_t *m, int count)
278 CTR4(KTR_PMAP, "%s(%#x, %p, %d)", __func__, start, m, count);
279 MMU_QENTER(mmu_obj, start, m, count);
283 pmap_qremove(vm_offset_t start, int count)
286 CTR3(KTR_PMAP, "%s(%#x, %d)", __func__, start, count);
287 MMU_QREMOVE(mmu_obj, start, count);
291 pmap_release(pmap_t pmap)
294 CTR2(KTR_PMAP, "%s(%p)", __func__, pmap);
295 MMU_RELEASE(mmu_obj, pmap);
299 pmap_remove(pmap_t pmap, vm_offset_t start, vm_offset_t end)
302 CTR4(KTR_PMAP, "%s(%p, %#x, %#x)", __func__, pmap, start, end);
303 MMU_REMOVE(mmu_obj, pmap, start, end);
307 pmap_remove_all(vm_page_t m)
310 CTR2(KTR_PMAP, "%s(%p)", __func__, m);
311 MMU_REMOVE_ALL(mmu_obj, m);
315 pmap_remove_pages(pmap_t pmap)
318 CTR2(KTR_PMAP, "%s(%p)", __func__, pmap);
319 MMU_REMOVE_PAGES(mmu_obj, pmap);
323 pmap_remove_write(vm_page_t m)
326 CTR2(KTR_PMAP, "%s(%p)", __func__, m);
327 MMU_REMOVE_WRITE(mmu_obj, m);
331 pmap_zero_page(vm_page_t m)
334 CTR2(KTR_PMAP, "%s(%p)", __func__, m);
335 MMU_ZERO_PAGE(mmu_obj, m);
339 pmap_zero_page_area(vm_page_t m, int off, int size)
342 CTR4(KTR_PMAP, "%s(%p, %d, %d)", __func__, m, off, size);
343 MMU_ZERO_PAGE_AREA(mmu_obj, m, off, size);
347 pmap_zero_page_idle(vm_page_t m)
350 CTR2(KTR_PMAP, "%s(%p)", __func__, m);
351 MMU_ZERO_PAGE_IDLE(mmu_obj, m);
355 pmap_mincore(pmap_t pmap, vm_offset_t addr)
358 CTR3(KTR_PMAP, "%s(%p, %#x)", __func__, pmap, addr);
359 return (MMU_MINCORE(mmu_obj, pmap, addr));
363 pmap_activate(struct thread *td)
366 CTR2(KTR_PMAP, "%s(%p)", __func__, td);
367 MMU_ACTIVATE(mmu_obj, td);
371 pmap_deactivate(struct thread *td)
374 CTR2(KTR_PMAP, "%s(%p)", __func__, td);
375 MMU_DEACTIVATE(mmu_obj, td);
379 * Increase the starting virtual address of the given mapping if a
380 * different alignment might result in more superpage mappings.
383 pmap_align_superpage(vm_object_t object, vm_ooffset_t offset,
384 vm_offset_t *addr, vm_size_t size)
387 CTR5(KTR_PMAP, "%s(%p, %#x, %p, %#x)", __func__, object, offset, addr,
389 MMU_ALIGN_SUPERPAGE(mmu_obj, object, offset, addr, size);
393 * Routines used in machine-dependent code
396 pmap_bootstrap(vm_offset_t start, vm_offset_t end)
398 mmu_obj = &mmu_kernel_obj;
401 * Take care of compiling the selected class, and
402 * then statically initialise the MMU object
404 kobj_class_compile_static(mmu_def_impl, &mmu_kernel_kops);
405 kobj_init((kobj_t)mmu_obj, mmu_def_impl);
407 MMU_BOOTSTRAP(mmu_obj, start, end);
411 pmap_cpu_bootstrap(int ap)
414 * No KTR here because our console probably doesn't work yet
417 return (MMU_CPU_BOOTSTRAP(mmu_obj, ap));
421 pmap_mapdev(vm_offset_t pa, vm_size_t size)
424 CTR3(KTR_PMAP, "%s(%#x, %#x)", __func__, pa, size);
425 return (MMU_MAPDEV(mmu_obj, pa, size));
429 pmap_unmapdev(vm_offset_t va, vm_size_t size)
432 CTR3(KTR_PMAP, "%s(%#x, %#x)", __func__, va, size);
433 MMU_UNMAPDEV(mmu_obj, va, size);
437 pmap_kextract(vm_offset_t va)
440 CTR2(KTR_PMAP, "%s(%#x)", __func__, va);
441 return (MMU_KEXTRACT(mmu_obj, va));
445 pmap_kenter(vm_offset_t va, vm_offset_t pa)
448 CTR3(KTR_PMAP, "%s(%#x, %#x)", __func__, va, pa);
449 MMU_KENTER(mmu_obj, va, pa);
453 pmap_dev_direct_mapped(vm_offset_t pa, vm_size_t size)
456 CTR3(KTR_PMAP, "%s(%#x, %#x)", __func__, pa, size);
457 return (MMU_DEV_DIRECT_MAPPED(mmu_obj, pa, size));
461 pmap_sync_icache(pmap_t pm, vm_offset_t va, vm_size_t sz)
464 CTR4(KTR_PMAP, "%s(%p, %#x, %#x)", __func__, pm, va, sz);
465 return (MMU_SYNC_ICACHE(mmu_obj, pm, va, sz));
469 pmap_dumpsys_map(struct pmap_md *md, vm_size_t ofs, vm_size_t *sz)
472 CTR4(KTR_PMAP, "%s(%p, %#x, %#x)", __func__, md, ofs, *sz);
473 return (MMU_DUMPSYS_MAP(mmu_obj, md, ofs, sz));
477 pmap_dumpsys_unmap(struct pmap_md *md, vm_size_t ofs, vm_offset_t va)
480 CTR4(KTR_PMAP, "%s(%p, %#x, %#x)", __func__, md, ofs, va);
481 return (MMU_DUMPSYS_UNMAP(mmu_obj, md, ofs, va));
485 pmap_scan_md(struct pmap_md *prev)
488 CTR2(KTR_PMAP, "%s(%p)", __func__, prev);
489 return (MMU_SCAN_MD(mmu_obj, prev));
493 * MMU install routines. Highest priority wins, equal priority also
494 * overrides allowing last-set to win.
496 SET_DECLARE(mmu_set, mmu_def_t);
499 pmap_mmu_install(char *name, int prio)
501 mmu_def_t **mmupp, *mmup;
502 static int curr_prio = 0;
505 * Try and locate the MMU kobj corresponding to the name
507 SET_FOREACH(mmupp, mmu_set) {
511 !strcmp(mmup->name, name) &&
512 (prio >= curr_prio || mmu_def_impl == NULL)) {