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;
81 pvo_vaddr_compare(struct pvo_entry *a, struct pvo_entry *b)
83 if (PVO_VADDR(a) < PVO_VADDR(b))
85 else if (PVO_VADDR(a) > PVO_VADDR(b))
89 RB_GENERATE(pvo_tree, pvo_entry, pvo_plink, pvo_vaddr_compare);
94 pmap_advise(pmap_t pmap, vm_offset_t start, vm_offset_t end, int advice)
97 CTR5(KTR_PMAP, "%s(%p, %#x, %#x, %d)", __func__, pmap, start, end,
99 MMU_ADVISE(mmu_obj, pmap, start, end, advice);
103 pmap_change_wiring(pmap_t pmap, vm_offset_t va, boolean_t wired)
106 CTR4(KTR_PMAP, "%s(%p, %#x, %u)", __func__, pmap, va, wired);
107 MMU_CHANGE_WIRING(mmu_obj, pmap, va, wired);
111 pmap_clear_modify(vm_page_t m)
114 CTR2(KTR_PMAP, "%s(%p)", __func__, m);
115 MMU_CLEAR_MODIFY(mmu_obj, m);
119 pmap_copy(pmap_t dst_pmap, pmap_t src_pmap, vm_offset_t dst_addr,
120 vm_size_t len, vm_offset_t src_addr)
123 CTR6(KTR_PMAP, "%s(%p, %p, %#x, %#x, %#x)", __func__, dst_pmap,
124 src_pmap, dst_addr, len, src_addr);
125 MMU_COPY(mmu_obj, dst_pmap, src_pmap, dst_addr, len, src_addr);
129 pmap_copy_page(vm_page_t src, vm_page_t dst)
132 CTR3(KTR_PMAP, "%s(%p, %p)", __func__, src, dst);
133 MMU_COPY_PAGE(mmu_obj, src, dst);
137 pmap_copy_pages(vm_page_t ma[], vm_offset_t a_offset, vm_page_t mb[],
138 vm_offset_t b_offset, int xfersize)
141 CTR6(KTR_PMAP, "%s(%p, %#x, %p, %#x, %#x)", __func__, ma,
142 a_offset, mb, b_offset, xfersize);
143 MMU_COPY_PAGES(mmu_obj, ma, a_offset, mb, b_offset, xfersize);
147 pmap_enter(pmap_t pmap, vm_offset_t va, vm_prot_t access, vm_page_t p,
148 vm_prot_t prot, boolean_t wired)
151 CTR6(KTR_PMAP, "pmap_enter(%p, %#x, %#x, %p, %#x, %u)", pmap, va,
152 access, p, prot, wired);
153 MMU_ENTER(mmu_obj, pmap, va, p, prot, wired);
157 pmap_enter_object(pmap_t pmap, vm_offset_t start, vm_offset_t end,
158 vm_page_t m_start, vm_prot_t prot)
161 CTR6(KTR_PMAP, "%s(%p, %#x, %#x, %p, %#x)", __func__, pmap, start,
163 MMU_ENTER_OBJECT(mmu_obj, pmap, start, end, m_start, prot);
167 pmap_enter_quick(pmap_t pmap, vm_offset_t va, vm_page_t m, vm_prot_t prot)
170 CTR5(KTR_PMAP, "%s(%p, %#x, %p, %#x)", __func__, pmap, va, m, prot);
171 MMU_ENTER_QUICK(mmu_obj, pmap, va, m, prot);
175 pmap_extract(pmap_t pmap, vm_offset_t va)
178 CTR3(KTR_PMAP, "%s(%p, %#x)", __func__, pmap, va);
179 return (MMU_EXTRACT(mmu_obj, pmap, va));
183 pmap_extract_and_hold(pmap_t pmap, vm_offset_t va, vm_prot_t prot)
186 CTR4(KTR_PMAP, "%s(%p, %#x, %#x)", __func__, pmap, va, prot);
187 return (MMU_EXTRACT_AND_HOLD(mmu_obj, pmap, va, prot));
191 pmap_growkernel(vm_offset_t va)
194 CTR2(KTR_PMAP, "%s(%#x)", __func__, va);
195 MMU_GROWKERNEL(mmu_obj, va);
202 CTR1(KTR_PMAP, "%s()", __func__);
207 pmap_is_modified(vm_page_t m)
210 CTR2(KTR_PMAP, "%s(%p)", __func__, m);
211 return (MMU_IS_MODIFIED(mmu_obj, m));
215 pmap_is_prefaultable(pmap_t pmap, vm_offset_t va)
218 CTR3(KTR_PMAP, "%s(%p, %#x)", __func__, pmap, va);
219 return (MMU_IS_PREFAULTABLE(mmu_obj, pmap, va));
223 pmap_is_referenced(vm_page_t m)
226 CTR2(KTR_PMAP, "%s(%p)", __func__, m);
227 return (MMU_IS_REFERENCED(mmu_obj, m));
231 pmap_ts_referenced(vm_page_t m)
234 CTR2(KTR_PMAP, "%s(%p)", __func__, m);
235 return (MMU_TS_REFERENCED(mmu_obj, m));
239 pmap_map(vm_offset_t *virt, vm_paddr_t start, vm_paddr_t end, int prot)
242 CTR5(KTR_PMAP, "%s(%p, %#x, %#x, %#x)", __func__, virt, start, end,
244 return (MMU_MAP(mmu_obj, virt, start, end, prot));
248 pmap_object_init_pt(pmap_t pmap, vm_offset_t addr, vm_object_t object,
249 vm_pindex_t pindex, vm_size_t size)
252 CTR6(KTR_PMAP, "%s(%p, %#x, %p, %u, %#x)", __func__, pmap, addr,
253 object, pindex, size);
254 MMU_OBJECT_INIT_PT(mmu_obj, pmap, addr, object, pindex, size);
258 pmap_page_exists_quick(pmap_t pmap, vm_page_t m)
261 CTR3(KTR_PMAP, "%s(%p, %p)", __func__, pmap, m);
262 return (MMU_PAGE_EXISTS_QUICK(mmu_obj, pmap, m));
266 pmap_page_init(vm_page_t m)
269 CTR2(KTR_PMAP, "%s(%p)", __func__, m);
270 MMU_PAGE_INIT(mmu_obj, m);
274 pmap_page_wired_mappings(vm_page_t m)
277 CTR2(KTR_PMAP, "%s(%p)", __func__, m);
278 return (MMU_PAGE_WIRED_MAPPINGS(mmu_obj, m));
282 pmap_pinit(pmap_t pmap)
285 CTR2(KTR_PMAP, "%s(%p)", __func__, pmap);
286 MMU_PINIT(mmu_obj, pmap);
291 pmap_pinit0(pmap_t pmap)
294 CTR2(KTR_PMAP, "%s(%p)", __func__, pmap);
295 MMU_PINIT0(mmu_obj, pmap);
299 pmap_protect(pmap_t pmap, vm_offset_t start, vm_offset_t end, vm_prot_t prot)
302 CTR5(KTR_PMAP, "%s(%p, %#x, %#x, %#x)", __func__, pmap, start, end,
304 MMU_PROTECT(mmu_obj, pmap, start, end, prot);
308 pmap_qenter(vm_offset_t start, vm_page_t *m, int count)
311 CTR4(KTR_PMAP, "%s(%#x, %p, %d)", __func__, start, m, count);
312 MMU_QENTER(mmu_obj, start, m, count);
316 pmap_qremove(vm_offset_t start, int count)
319 CTR3(KTR_PMAP, "%s(%#x, %d)", __func__, start, count);
320 MMU_QREMOVE(mmu_obj, start, count);
324 pmap_release(pmap_t pmap)
327 CTR2(KTR_PMAP, "%s(%p)", __func__, pmap);
328 MMU_RELEASE(mmu_obj, pmap);
332 pmap_remove(pmap_t pmap, vm_offset_t start, vm_offset_t end)
335 CTR4(KTR_PMAP, "%s(%p, %#x, %#x)", __func__, pmap, start, end);
336 MMU_REMOVE(mmu_obj, pmap, start, end);
340 pmap_remove_all(vm_page_t m)
343 CTR2(KTR_PMAP, "%s(%p)", __func__, m);
344 MMU_REMOVE_ALL(mmu_obj, m);
348 pmap_remove_pages(pmap_t pmap)
351 CTR2(KTR_PMAP, "%s(%p)", __func__, pmap);
352 MMU_REMOVE_PAGES(mmu_obj, pmap);
356 pmap_remove_write(vm_page_t m)
359 CTR2(KTR_PMAP, "%s(%p)", __func__, m);
360 MMU_REMOVE_WRITE(mmu_obj, m);
364 pmap_zero_page(vm_page_t m)
367 CTR2(KTR_PMAP, "%s(%p)", __func__, m);
368 MMU_ZERO_PAGE(mmu_obj, m);
372 pmap_zero_page_area(vm_page_t m, int off, int size)
375 CTR4(KTR_PMAP, "%s(%p, %d, %d)", __func__, m, off, size);
376 MMU_ZERO_PAGE_AREA(mmu_obj, m, off, size);
380 pmap_zero_page_idle(vm_page_t m)
383 CTR2(KTR_PMAP, "%s(%p)", __func__, m);
384 MMU_ZERO_PAGE_IDLE(mmu_obj, m);
388 pmap_mincore(pmap_t pmap, vm_offset_t addr, vm_paddr_t *locked_pa)
391 CTR3(KTR_PMAP, "%s(%p, %#x)", __func__, pmap, addr);
392 return (MMU_MINCORE(mmu_obj, pmap, addr, locked_pa));
396 pmap_activate(struct thread *td)
399 CTR2(KTR_PMAP, "%s(%p)", __func__, td);
400 MMU_ACTIVATE(mmu_obj, td);
404 pmap_deactivate(struct thread *td)
407 CTR2(KTR_PMAP, "%s(%p)", __func__, td);
408 MMU_DEACTIVATE(mmu_obj, td);
412 * Increase the starting virtual address of the given mapping if a
413 * different alignment might result in more superpage mappings.
416 pmap_align_superpage(vm_object_t object, vm_ooffset_t offset,
417 vm_offset_t *addr, vm_size_t size)
420 CTR5(KTR_PMAP, "%s(%p, %#x, %p, %#x)", __func__, object, offset, addr,
422 MMU_ALIGN_SUPERPAGE(mmu_obj, object, offset, addr, size);
426 * Routines used in machine-dependent code
429 pmap_bootstrap(vm_offset_t start, vm_offset_t end)
431 mmu_obj = &mmu_kernel_obj;
434 * Take care of compiling the selected class, and
435 * then statically initialise the MMU object
437 kobj_class_compile_static(mmu_def_impl, &mmu_kernel_kops);
438 kobj_init_static((kobj_t)mmu_obj, mmu_def_impl);
440 MMU_BOOTSTRAP(mmu_obj, start, end);
444 pmap_cpu_bootstrap(int ap)
447 * No KTR here because our console probably doesn't work yet
450 return (MMU_CPU_BOOTSTRAP(mmu_obj, ap));
454 pmap_mapdev(vm_paddr_t pa, vm_size_t size)
457 CTR3(KTR_PMAP, "%s(%#x, %#x)", __func__, pa, size);
458 return (MMU_MAPDEV(mmu_obj, pa, size));
462 pmap_mapdev_attr(vm_offset_t pa, vm_size_t size, vm_memattr_t attr)
465 CTR4(KTR_PMAP, "%s(%#x, %#x, %#x)", __func__, pa, size, attr);
466 return (MMU_MAPDEV_ATTR(mmu_obj, pa, size, attr));
470 pmap_page_set_memattr(vm_page_t m, vm_memattr_t ma)
473 CTR3(KTR_PMAP, "%s(%p, %#x)", __func__, m, ma);
474 return (MMU_PAGE_SET_MEMATTR(mmu_obj, m, ma));
478 pmap_unmapdev(vm_offset_t va, vm_size_t size)
481 CTR3(KTR_PMAP, "%s(%#x, %#x)", __func__, va, size);
482 MMU_UNMAPDEV(mmu_obj, va, size);
486 pmap_kextract(vm_offset_t va)
489 CTR2(KTR_PMAP, "%s(%#x)", __func__, va);
490 return (MMU_KEXTRACT(mmu_obj, va));
494 pmap_kenter(vm_offset_t va, vm_paddr_t pa)
497 CTR3(KTR_PMAP, "%s(%#x, %#x)", __func__, va, pa);
498 MMU_KENTER(mmu_obj, va, pa);
502 pmap_kenter_attr(vm_offset_t va, vm_offset_t pa, vm_memattr_t ma)
505 CTR4(KTR_PMAP, "%s(%#x, %#x, %#x)", __func__, va, pa, ma);
506 MMU_KENTER_ATTR(mmu_obj, va, pa, ma);
510 pmap_dev_direct_mapped(vm_paddr_t pa, vm_size_t size)
513 CTR3(KTR_PMAP, "%s(%#x, %#x)", __func__, pa, size);
514 return (MMU_DEV_DIRECT_MAPPED(mmu_obj, pa, size));
518 pmap_sync_icache(pmap_t pm, vm_offset_t va, vm_size_t sz)
521 CTR4(KTR_PMAP, "%s(%p, %#x, %#x)", __func__, pm, va, sz);
522 return (MMU_SYNC_ICACHE(mmu_obj, pm, va, sz));
526 pmap_dumpsys_map(struct pmap_md *md, vm_size_t ofs, vm_size_t *sz)
529 CTR4(KTR_PMAP, "%s(%p, %#x, %#x)", __func__, md, ofs, *sz);
530 return (MMU_DUMPSYS_MAP(mmu_obj, md, ofs, sz));
534 pmap_dumpsys_unmap(struct pmap_md *md, vm_size_t ofs, vm_offset_t va)
537 CTR4(KTR_PMAP, "%s(%p, %#x, %#x)", __func__, md, ofs, va);
538 return (MMU_DUMPSYS_UNMAP(mmu_obj, md, ofs, va));
542 pmap_scan_md(struct pmap_md *prev)
545 CTR2(KTR_PMAP, "%s(%p)", __func__, prev);
546 return (MMU_SCAN_MD(mmu_obj, prev));
550 * MMU install routines. Highest priority wins, equal priority also
551 * overrides allowing last-set to win.
553 SET_DECLARE(mmu_set, mmu_def_t);
556 pmap_mmu_install(char *name, int prio)
558 mmu_def_t **mmupp, *mmup;
559 static int curr_prio = 0;
562 * Try and locate the MMU kobj corresponding to the name
564 SET_FOREACH(mmupp, mmu_set) {
568 !strcmp(mmup->name, name) &&
569 (prio >= curr_prio || mmu_def_impl == NULL)) {
579 int unmapped_buf_allowed;