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/kerneldump.h>
50 #include <sys/mutex.h>
51 #include <sys/systm.h>
54 #include <vm/vm_page.h>
56 #include <machine/dump.h>
57 #include <machine/md_var.h>
58 #include <machine/mmuvar.h>
59 #include <machine/smp.h>
63 static mmu_def_t *mmu_def_impl;
65 static struct mmu_kobj mmu_kernel_obj;
66 static struct kobj_ops mmu_kernel_kops;
71 struct pmap kernel_pmap_store;
73 struct msgbuf *msgbufp;
74 vm_offset_t msgbuf_phys;
76 vm_offset_t kernel_vm_end;
77 vm_offset_t phys_avail[PHYS_AVAIL_SZ];
78 vm_offset_t virtual_avail;
79 vm_offset_t virtual_end;
81 int pmap_bootstrapped;
85 pvo_vaddr_compare(struct pvo_entry *a, struct pvo_entry *b)
87 if (PVO_VADDR(a) < PVO_VADDR(b))
89 else if (PVO_VADDR(a) > PVO_VADDR(b))
93 RB_GENERATE(pvo_tree, pvo_entry, pvo_plink, pvo_vaddr_compare);
98 pmap_advise(pmap_t pmap, vm_offset_t start, vm_offset_t end, int advice)
101 CTR5(KTR_PMAP, "%s(%p, %#x, %#x, %d)", __func__, pmap, start, end,
103 MMU_ADVISE(mmu_obj, pmap, start, end, advice);
107 pmap_clear_modify(vm_page_t m)
110 CTR2(KTR_PMAP, "%s(%p)", __func__, m);
111 MMU_CLEAR_MODIFY(mmu_obj, m);
115 pmap_copy(pmap_t dst_pmap, pmap_t src_pmap, vm_offset_t dst_addr,
116 vm_size_t len, vm_offset_t src_addr)
119 CTR6(KTR_PMAP, "%s(%p, %p, %#x, %#x, %#x)", __func__, dst_pmap,
120 src_pmap, dst_addr, len, src_addr);
121 MMU_COPY(mmu_obj, dst_pmap, src_pmap, dst_addr, len, src_addr);
125 pmap_copy_page(vm_page_t src, vm_page_t dst)
128 CTR3(KTR_PMAP, "%s(%p, %p)", __func__, src, dst);
129 MMU_COPY_PAGE(mmu_obj, src, dst);
133 pmap_copy_pages(vm_page_t ma[], vm_offset_t a_offset, vm_page_t mb[],
134 vm_offset_t b_offset, int xfersize)
137 CTR6(KTR_PMAP, "%s(%p, %#x, %p, %#x, %#x)", __func__, ma,
138 a_offset, mb, b_offset, xfersize);
139 MMU_COPY_PAGES(mmu_obj, ma, a_offset, mb, b_offset, xfersize);
143 pmap_enter(pmap_t pmap, vm_offset_t va, vm_page_t p, vm_prot_t prot,
144 u_int flags, int8_t psind)
147 CTR6(KTR_PMAP, "pmap_enter(%p, %#x, %p, %#x, %x, %d)", pmap, va,
148 p, prot, flags, psind);
149 return (MMU_ENTER(mmu_obj, pmap, va, p, prot, flags, psind));
153 pmap_enter_object(pmap_t pmap, vm_offset_t start, vm_offset_t end,
154 vm_page_t m_start, vm_prot_t prot)
157 CTR6(KTR_PMAP, "%s(%p, %#x, %#x, %p, %#x)", __func__, pmap, start,
159 MMU_ENTER_OBJECT(mmu_obj, pmap, start, end, m_start, prot);
163 pmap_enter_quick(pmap_t pmap, vm_offset_t va, vm_page_t m, vm_prot_t prot)
166 CTR5(KTR_PMAP, "%s(%p, %#x, %p, %#x)", __func__, pmap, va, m, prot);
167 MMU_ENTER_QUICK(mmu_obj, pmap, va, m, prot);
171 pmap_extract(pmap_t pmap, vm_offset_t va)
174 CTR3(KTR_PMAP, "%s(%p, %#x)", __func__, pmap, va);
175 return (MMU_EXTRACT(mmu_obj, pmap, va));
179 pmap_extract_and_hold(pmap_t pmap, vm_offset_t va, vm_prot_t prot)
182 CTR4(KTR_PMAP, "%s(%p, %#x, %#x)", __func__, pmap, va, prot);
183 return (MMU_EXTRACT_AND_HOLD(mmu_obj, pmap, va, prot));
187 pmap_growkernel(vm_offset_t va)
190 CTR2(KTR_PMAP, "%s(%#x)", __func__, va);
191 MMU_GROWKERNEL(mmu_obj, va);
198 CTR1(KTR_PMAP, "%s()", __func__);
203 pmap_is_modified(vm_page_t m)
206 CTR2(KTR_PMAP, "%s(%p)", __func__, m);
207 return (MMU_IS_MODIFIED(mmu_obj, m));
211 pmap_is_prefaultable(pmap_t pmap, vm_offset_t va)
214 CTR3(KTR_PMAP, "%s(%p, %#x)", __func__, pmap, va);
215 return (MMU_IS_PREFAULTABLE(mmu_obj, pmap, va));
219 pmap_is_referenced(vm_page_t m)
222 CTR2(KTR_PMAP, "%s(%p)", __func__, m);
223 return (MMU_IS_REFERENCED(mmu_obj, m));
227 pmap_ts_referenced(vm_page_t m)
230 CTR2(KTR_PMAP, "%s(%p)", __func__, m);
231 return (MMU_TS_REFERENCED(mmu_obj, m));
235 pmap_map(vm_offset_t *virt, vm_paddr_t start, vm_paddr_t end, int prot)
238 CTR5(KTR_PMAP, "%s(%p, %#x, %#x, %#x)", __func__, virt, start, end,
240 return (MMU_MAP(mmu_obj, virt, start, end, prot));
244 pmap_object_init_pt(pmap_t pmap, vm_offset_t addr, vm_object_t object,
245 vm_pindex_t pindex, vm_size_t size)
248 CTR6(KTR_PMAP, "%s(%p, %#x, %p, %u, %#x)", __func__, pmap, addr,
249 object, pindex, size);
250 MMU_OBJECT_INIT_PT(mmu_obj, pmap, addr, object, pindex, size);
254 pmap_page_exists_quick(pmap_t pmap, vm_page_t m)
257 CTR3(KTR_PMAP, "%s(%p, %p)", __func__, pmap, m);
258 return (MMU_PAGE_EXISTS_QUICK(mmu_obj, pmap, m));
262 pmap_page_init(vm_page_t m)
265 CTR2(KTR_PMAP, "%s(%p)", __func__, m);
266 MMU_PAGE_INIT(mmu_obj, m);
270 pmap_page_wired_mappings(vm_page_t m)
273 CTR2(KTR_PMAP, "%s(%p)", __func__, m);
274 return (MMU_PAGE_WIRED_MAPPINGS(mmu_obj, m));
278 pmap_pinit(pmap_t pmap)
281 CTR2(KTR_PMAP, "%s(%p)", __func__, pmap);
282 MMU_PINIT(mmu_obj, pmap);
287 pmap_pinit0(pmap_t pmap)
290 CTR2(KTR_PMAP, "%s(%p)", __func__, pmap);
291 MMU_PINIT0(mmu_obj, pmap);
295 pmap_protect(pmap_t pmap, vm_offset_t start, vm_offset_t end, vm_prot_t prot)
298 CTR5(KTR_PMAP, "%s(%p, %#x, %#x, %#x)", __func__, pmap, start, end,
300 MMU_PROTECT(mmu_obj, pmap, start, end, prot);
304 pmap_qenter(vm_offset_t start, vm_page_t *m, int count)
307 CTR4(KTR_PMAP, "%s(%#x, %p, %d)", __func__, start, m, count);
308 MMU_QENTER(mmu_obj, start, m, count);
312 pmap_qremove(vm_offset_t start, int count)
315 CTR3(KTR_PMAP, "%s(%#x, %d)", __func__, start, count);
316 MMU_QREMOVE(mmu_obj, start, count);
320 pmap_release(pmap_t pmap)
323 CTR2(KTR_PMAP, "%s(%p)", __func__, pmap);
324 MMU_RELEASE(mmu_obj, pmap);
328 pmap_remove(pmap_t pmap, vm_offset_t start, vm_offset_t end)
331 CTR4(KTR_PMAP, "%s(%p, %#x, %#x)", __func__, pmap, start, end);
332 MMU_REMOVE(mmu_obj, pmap, start, end);
336 pmap_remove_all(vm_page_t m)
339 CTR2(KTR_PMAP, "%s(%p)", __func__, m);
340 MMU_REMOVE_ALL(mmu_obj, m);
344 pmap_remove_pages(pmap_t pmap)
347 CTR2(KTR_PMAP, "%s(%p)", __func__, pmap);
348 MMU_REMOVE_PAGES(mmu_obj, pmap);
352 pmap_remove_write(vm_page_t m)
355 CTR2(KTR_PMAP, "%s(%p)", __func__, m);
356 MMU_REMOVE_WRITE(mmu_obj, m);
360 pmap_unwire(pmap_t pmap, vm_offset_t start, vm_offset_t end)
363 CTR4(KTR_PMAP, "%s(%p, %#x, %#x)", __func__, pmap, start, end);
364 MMU_UNWIRE(mmu_obj, pmap, start, end);
368 pmap_zero_page(vm_page_t m)
371 CTR2(KTR_PMAP, "%s(%p)", __func__, m);
372 MMU_ZERO_PAGE(mmu_obj, m);
376 pmap_zero_page_area(vm_page_t m, int off, int size)
379 CTR4(KTR_PMAP, "%s(%p, %d, %d)", __func__, m, off, size);
380 MMU_ZERO_PAGE_AREA(mmu_obj, m, off, size);
384 pmap_zero_page_idle(vm_page_t m)
387 CTR2(KTR_PMAP, "%s(%p)", __func__, m);
388 MMU_ZERO_PAGE_IDLE(mmu_obj, m);
392 pmap_mincore(pmap_t pmap, vm_offset_t addr, vm_paddr_t *locked_pa)
395 CTR3(KTR_PMAP, "%s(%p, %#x)", __func__, pmap, addr);
396 return (MMU_MINCORE(mmu_obj, pmap, addr, locked_pa));
400 pmap_activate(struct thread *td)
403 CTR2(KTR_PMAP, "%s(%p)", __func__, td);
404 MMU_ACTIVATE(mmu_obj, td);
408 pmap_deactivate(struct thread *td)
411 CTR2(KTR_PMAP, "%s(%p)", __func__, td);
412 MMU_DEACTIVATE(mmu_obj, td);
416 * Increase the starting virtual address of the given mapping if a
417 * different alignment might result in more superpage mappings.
420 pmap_align_superpage(vm_object_t object, vm_ooffset_t offset,
421 vm_offset_t *addr, vm_size_t size)
424 CTR5(KTR_PMAP, "%s(%p, %#x, %p, %#x)", __func__, object, offset, addr,
426 MMU_ALIGN_SUPERPAGE(mmu_obj, object, offset, addr, size);
430 * Routines used in machine-dependent code
433 pmap_bootstrap(vm_offset_t start, vm_offset_t end)
435 mmu_obj = &mmu_kernel_obj;
438 * Take care of compiling the selected class, and
439 * then statically initialise the MMU object
441 kobj_class_compile_static(mmu_def_impl, &mmu_kernel_kops);
442 kobj_init_static((kobj_t)mmu_obj, mmu_def_impl);
444 MMU_BOOTSTRAP(mmu_obj, start, end);
448 pmap_cpu_bootstrap(int ap)
451 * No KTR here because our console probably doesn't work yet
454 return (MMU_CPU_BOOTSTRAP(mmu_obj, ap));
458 pmap_mapdev(vm_paddr_t pa, vm_size_t size)
461 CTR3(KTR_PMAP, "%s(%#x, %#x)", __func__, pa, size);
462 return (MMU_MAPDEV(mmu_obj, pa, size));
466 pmap_mapdev_attr(vm_offset_t pa, vm_size_t size, vm_memattr_t attr)
469 CTR4(KTR_PMAP, "%s(%#x, %#x, %#x)", __func__, pa, size, attr);
470 return (MMU_MAPDEV_ATTR(mmu_obj, pa, size, attr));
474 pmap_page_set_memattr(vm_page_t m, vm_memattr_t ma)
477 CTR3(KTR_PMAP, "%s(%p, %#x)", __func__, m, ma);
478 return (MMU_PAGE_SET_MEMATTR(mmu_obj, m, ma));
482 pmap_unmapdev(vm_offset_t va, vm_size_t size)
485 CTR3(KTR_PMAP, "%s(%#x, %#x)", __func__, va, size);
486 MMU_UNMAPDEV(mmu_obj, va, size);
490 pmap_kextract(vm_offset_t va)
493 CTR2(KTR_PMAP, "%s(%#x)", __func__, va);
494 return (MMU_KEXTRACT(mmu_obj, va));
498 pmap_kenter(vm_offset_t va, vm_paddr_t pa)
501 CTR3(KTR_PMAP, "%s(%#x, %#x)", __func__, va, pa);
502 MMU_KENTER(mmu_obj, va, pa);
506 pmap_kenter_attr(vm_offset_t va, vm_offset_t pa, vm_memattr_t ma)
509 CTR4(KTR_PMAP, "%s(%#x, %#x, %#x)", __func__, va, pa, ma);
510 MMU_KENTER_ATTR(mmu_obj, va, pa, ma);
514 pmap_dev_direct_mapped(vm_paddr_t pa, vm_size_t size)
517 CTR3(KTR_PMAP, "%s(%#x, %#x)", __func__, pa, size);
518 return (MMU_DEV_DIRECT_MAPPED(mmu_obj, pa, size));
522 pmap_sync_icache(pmap_t pm, vm_offset_t va, vm_size_t sz)
525 CTR4(KTR_PMAP, "%s(%p, %#x, %#x)", __func__, pm, va, sz);
526 return (MMU_SYNC_ICACHE(mmu_obj, pm, va, sz));
530 dumpsys_map_chunk(vm_paddr_t pa, size_t sz, void **va)
533 CTR4(KTR_PMAP, "%s(%#jx, %#zx, %p)", __func__, (uintmax_t)pa, sz, va);
534 return (MMU_DUMPSYS_MAP(mmu_obj, pa, sz, va));
538 dumpsys_unmap_chunk(vm_paddr_t pa, size_t sz, void *va)
541 CTR4(KTR_PMAP, "%s(%#jx, %#zx, %p)", __func__, (uintmax_t)pa, sz, va);
542 return (MMU_DUMPSYS_UNMAP(mmu_obj, pa, sz, va));
546 dumpsys_pa_init(void)
549 CTR1(KTR_PMAP, "%s()", __func__);
550 return (MMU_SCAN_INIT(mmu_obj));
554 * MMU install routines. Highest priority wins, equal priority also
555 * overrides allowing last-set to win.
557 SET_DECLARE(mmu_set, mmu_def_t);
560 pmap_mmu_install(char *name, int prio)
562 mmu_def_t **mmupp, *mmup;
563 static int curr_prio = 0;
566 * Try and locate the MMU kobj corresponding to the name
568 SET_FOREACH(mmupp, mmu_set) {
572 !strcmp(mmup->name, name) &&
573 (prio >= curr_prio || mmu_def_impl == NULL)) {
583 int unmapped_buf_allowed;