memobj-r0drv-freebsd.c@ 96445

Last change on this file since 96445 was 96407, checked in by vboxsync, 2 years ago
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1	/* $Id: memobj-r0drv-freebsd.c 96407 2022-08-22 17:43:14Z vboxsync $ */
2	/** @file
3	* IPRT - Ring-0 Memory Objects, FreeBSD.
4	*/
5
6	/*
7	* Contributed by knut st. osmundsen, Andriy Gapon.
8	*
9	* Copyright (C) 2007-2022 Oracle and/or its affiliates.
10	*
11	* This file is part of VirtualBox base platform packages, as
12	* available from https://www.virtualbox.org.
13	*
14	* This program is free software; you can redistribute it and/or
15	* modify it under the terms of the GNU General Public License
16	* as published by the Free Software Foundation, in version 3 of the
17	* License.
18	*
19	* This program is distributed in the hope that it will be useful, but
20	* WITHOUT ANY WARRANTY; without even the implied warranty of
21	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
22	* General Public License for more details.
23	*
24	* You should have received a copy of the GNU General Public License
25	* along with this program; if not, see <https://www.gnu.org/licenses>.
26	*
27	* The contents of this file may alternatively be used under the terms
28	* of the Common Development and Distribution License Version 1.0
29	* (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
30	* in the VirtualBox distribution, in which case the provisions of the
31	* CDDL are applicable instead of those of the GPL.
32	*
33	* You may elect to license modified versions of this file under the
34	* terms and conditions of either the GPL or the CDDL or both.
35	*
36	* SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
37	* --------------------------------------------------------------------
38	*
39	* This code is based on:
40	*
41	* Copyright (c) 2007 knut st. osmundsen <bird-src-spam@anduin.net>
42	* Copyright (c) 2011 Andriy Gapon <avg@FreeBSD.org>
43	*
44	* Permission is hereby granted, free of charge, to any person
45	* obtaining a copy of this software and associated documentation
46	* files (the "Software"), to deal in the Software without
47	* restriction, including without limitation the rights to use,
48	* copy, modify, merge, publish, distribute, sublicense, and/or sell
49	* copies of the Software, and to permit persons to whom the
50	* Software is furnished to do so, subject to the following
51	* conditions:
52	*
53	* The above copyright notice and this permission notice shall be
54	* included in all copies or substantial portions of the Software.
55	*
56	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
57	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
58	* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
59	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
60	* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
61	* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
62	* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
63	* OTHER DEALINGS IN THE SOFTWARE.
64	*/
65
66
67	/*********************************************************************************************************************************
68	* Header Files *
69	*********************************************************************************************************************************/
70	#include "the-freebsd-kernel.h"
71
72	#include <iprt/memobj.h>
73	#include <iprt/mem.h>
74	#include <iprt/err.h>
75	#include <iprt/assert.h>
76	#include <iprt/log.h>
77	#include <iprt/param.h>
78	#include <iprt/process.h>
79	#include "internal/memobj.h"
80
81
82	/*********************************************************************************************************************************
83	* Structures and Typedefs *
84	*********************************************************************************************************************************/
85	/**
86	* The FreeBSD version of the memory object structure.
87	*/
88	typedef struct RTR0MEMOBJFREEBSD
89	{
90	/** The core structure. */
91	RTR0MEMOBJINTERNAL Core;
92	/** The VM object associated with the allocation. */
93	vm_object_t pObject;
94	} RTR0MEMOBJFREEBSD, *PRTR0MEMOBJFREEBSD;
95
96
97	MALLOC_DEFINE(M_IPRTMOBJ, "iprtmobj", "IPRT - R0MemObj");
98
99
100	/**
101	* Gets the virtual memory map the specified object is mapped into.
102	*
103	* @returns VM map handle on success, NULL if no map.
104	* @param pMem The memory object.
105	*/
106	static vm_map_t rtR0MemObjFreeBSDGetMap(PRTR0MEMOBJINTERNAL pMem)
107	{
108	switch (pMem->enmType)
109	{
110	case RTR0MEMOBJTYPE_PAGE:
111	case RTR0MEMOBJTYPE_LOW:
112	case RTR0MEMOBJTYPE_CONT:
113	return kernel_map;
114
115	case RTR0MEMOBJTYPE_PHYS:
116	case RTR0MEMOBJTYPE_PHYS_NC:
117	return NULL; /* pretend these have no mapping atm. */
118
119	case RTR0MEMOBJTYPE_LOCK:
120	return pMem->u.Lock.R0Process == NIL_RTR0PROCESS
121	? kernel_map
122	: &((struct proc *)pMem->u.Lock.R0Process)->p_vmspace->vm_map;
123
124	case RTR0MEMOBJTYPE_RES_VIRT:
125	return pMem->u.ResVirt.R0Process == NIL_RTR0PROCESS
126	? kernel_map
127	: &((struct proc *)pMem->u.ResVirt.R0Process)->p_vmspace->vm_map;
128
129	case RTR0MEMOBJTYPE_MAPPING:
130	return pMem->u.Mapping.R0Process == NIL_RTR0PROCESS
131	? kernel_map
132	: &((struct proc *)pMem->u.Mapping.R0Process)->p_vmspace->vm_map;
133
134	default:
135	return NULL;
136	}
137	}
138
139
140	DECLHIDDEN(int) rtR0MemObjNativeFree(RTR0MEMOBJ pMem)
141	{
142	PRTR0MEMOBJFREEBSD pMemFreeBSD = (PRTR0MEMOBJFREEBSD)pMem;
143	int rc;
144
145	switch (pMemFreeBSD->Core.enmType)
146	{
147	case RTR0MEMOBJTYPE_PAGE:
148	case RTR0MEMOBJTYPE_LOW:
149	case RTR0MEMOBJTYPE_CONT:
150	rc = vm_map_remove(kernel_map,
151	(vm_offset_t)pMemFreeBSD->Core.pv,
152	(vm_offset_t)pMemFreeBSD->Core.pv + pMemFreeBSD->Core.cb);
153	AssertMsg(rc == KERN_SUCCESS, ("%#x", rc));
154	break;
155
156	case RTR0MEMOBJTYPE_LOCK:
157	{
158	vm_map_t pMap = kernel_map;
159
160	if (pMemFreeBSD->Core.u.Lock.R0Process != NIL_RTR0PROCESS)
161	pMap = &((struct proc *)pMemFreeBSD->Core.u.Lock.R0Process)->p_vmspace->vm_map;
162
163	rc = vm_map_unwire(pMap,
164	(vm_offset_t)pMemFreeBSD->Core.pv,
165	(vm_offset_t)pMemFreeBSD->Core.pv + pMemFreeBSD->Core.cb,
166	VM_MAP_WIRE_SYSTEM \| VM_MAP_WIRE_NOHOLES);
167	AssertMsg(rc == KERN_SUCCESS, ("%#x", rc));
168	break;
169	}
170
171	case RTR0MEMOBJTYPE_RES_VIRT:
172	{
173	vm_map_t pMap = kernel_map;
174	if (pMemFreeBSD->Core.u.ResVirt.R0Process != NIL_RTR0PROCESS)
175	pMap = &((struct proc *)pMemFreeBSD->Core.u.ResVirt.R0Process)->p_vmspace->vm_map;
176	rc = vm_map_remove(pMap,
177	(vm_offset_t)pMemFreeBSD->Core.pv,
178	(vm_offset_t)pMemFreeBSD->Core.pv + pMemFreeBSD->Core.cb);
179	AssertMsg(rc == KERN_SUCCESS, ("%#x", rc));
180	break;
181	}
182
183	case RTR0MEMOBJTYPE_MAPPING:
184	{
185	vm_map_t pMap = kernel_map;
186
187	if (pMemFreeBSD->Core.u.Mapping.R0Process != NIL_RTR0PROCESS)
188	pMap = &((struct proc *)pMemFreeBSD->Core.u.Mapping.R0Process)->p_vmspace->vm_map;
189	rc = vm_map_remove(pMap,
190	(vm_offset_t)pMemFreeBSD->Core.pv,
191	(vm_offset_t)pMemFreeBSD->Core.pv + pMemFreeBSD->Core.cb);
192	AssertMsg(rc == KERN_SUCCESS, ("%#x", rc));
193	break;
194	}
195
196	case RTR0MEMOBJTYPE_PHYS:
197	case RTR0MEMOBJTYPE_PHYS_NC:
198	{
199	VM_OBJECT_WLOCK(pMemFreeBSD->pObject);
200	vm_page_t pPage = vm_page_find_least(pMemFreeBSD->pObject, 0);
201	#if __FreeBSD_version < 1000000
202	vm_page_lock_queues();
203	#endif
204	for (vm_page_t pPage = vm_page_find_least(pMemFreeBSD->pObject, 0);
205	pPage != NULL;
206	pPage = vm_page_next(pPage))
207	{
208	vm_page_unwire(pPage, 0);
209	}
210	#if __FreeBSD_version < 1000000
211	vm_page_unlock_queues();
212	#endif
213	VM_OBJECT_WUNLOCK(pMemFreeBSD->pObject);
214	vm_object_deallocate(pMemFreeBSD->pObject);
215	break;
216	}
217
218	default:
219	AssertMsgFailed(("enmType=%d\n", pMemFreeBSD->Core.enmType));
220	return VERR_INTERNAL_ERROR;
221	}
222
223	return VINF_SUCCESS;
224	}
225
226
227	static vm_page_t rtR0MemObjFreeBSDContigPhysAllocHelper(vm_object_t pObject, vm_pindex_t iPIndex,
228	u_long cPages, vm_paddr_t VmPhysAddrHigh,
229	u_long uAlignment, bool fWire)
230	{
231	vm_page_t pPages;
232	int cTries = 0;
233
234	#if __FreeBSD_version > 1000000
235	int fFlags = VM_ALLOC_INTERRUPT \| VM_ALLOC_NOBUSY;
236	if (fWire)
237	fFlags \|= VM_ALLOC_WIRED;
238
239	while (cTries <= 1)
240	{
241	VM_OBJECT_WLOCK(pObject);
242	pPages = vm_page_alloc_contig(pObject, iPIndex, fFlags, cPages, 0, VmPhysAddrHigh, uAlignment, 0, VM_MEMATTR_DEFAULT);
243	VM_OBJECT_WUNLOCK(pObject);
244	if (pPages)
245	break;
246	#if __FreeBSD_version >= 1100092
247	if (!vm_page_reclaim_contig(cTries, cPages, 0, VmPhysAddrHigh, PAGE_SIZE, 0))
248	break;
249	#else
250	vm_pageout_grow_cache(cTries, 0, VmPhysAddrHigh);
251	#endif
252	cTries++;
253	}
254
255	return pPages;
256	#else
257	while (cTries <= 1)
258	{
259	pPages = vm_phys_alloc_contig(cPages, 0, VmPhysAddrHigh, uAlignment, 0);
260	if (pPages)
261	break;
262	vm_contig_grow_cache(cTries, 0, VmPhysAddrHigh);
263	cTries++;
264	}
265
266	if (!pPages)
267	return pPages;
268	VM_OBJECT_WLOCK(pObject);
269	for (vm_pindex_t iPage = 0; iPage < cPages; iPage++)
270	{
271	vm_page_t pPage = pPages + iPage;
272	vm_page_insert(pPage, pObject, iPIndex + iPage);
273	pPage->valid = VM_PAGE_BITS_ALL;
274	if (fWire)
275	{
276	pPage->wire_count = 1;
277	atomic_add_int(&cnt.v_wire_count, 1);
278	}
279	}
280	VM_OBJECT_WUNLOCK(pObject);
281	return pPages;
282	#endif
283	}
284
285	static int rtR0MemObjFreeBSDPhysAllocHelper(vm_object_t pObject, u_long cPages,
286	vm_paddr_t VmPhysAddrHigh, u_long uAlignment,
287	bool fContiguous, bool fWire, int rcNoMem)
288	{
289	if (fContiguous)
290	{
291	if (rtR0MemObjFreeBSDContigPhysAllocHelper(pObject, 0, cPages, VmPhysAddrHigh, uAlignment, fWire) != NULL)
292	return VINF_SUCCESS;
293	return rcNoMem;
294	}
295
296	for (vm_pindex_t iPage = 0; iPage < cPages; iPage++)
297	{
298	vm_page_t pPage = rtR0MemObjFreeBSDContigPhysAllocHelper(pObject, iPage, 1, VmPhysAddrHigh, uAlignment, fWire);
299	if (pPage)
300	{ /* likely */ }
301	else
302	{
303	/* Free all allocated pages */
304	VM_OBJECT_WLOCK(pObject);
305	while (iPage-- > 0)
306	{
307	pPage = vm_page_lookup(pObject, iPage);
308	#if __FreeBSD_version < 1000000
309	vm_page_lock_queues();
310	#endif
311	if (fWire)
312	vm_page_unwire(pPage, 0);
313	vm_page_free(pPage);
314	#if __FreeBSD_version < 1000000
315	vm_page_unlock_queues();
316	#endif
317	}
318	VM_OBJECT_WUNLOCK(pObject);
319	return rcNoMem;
320	}
321	}
322	return VINF_SUCCESS;
323	}
324
325	static int rtR0MemObjFreeBSDAllocHelper(PRTR0MEMOBJFREEBSD pMemFreeBSD, bool fExecutable,
326	vm_paddr_t VmPhysAddrHigh, bool fContiguous, int rcNoMem)
327	{
328	vm_offset_t MapAddress = vm_map_min(kernel_map);
329	size_t cPages = atop(pMemFreeBSD->Core.cb);
330	int rc;
331
332	pMemFreeBSD->pObject = vm_object_allocate(OBJT_PHYS, cPages);
333
334	/* No additional object reference for auto-deallocation upon unmapping. */
335	#if __FreeBSD_version >= 1000055
336	rc = vm_map_find(kernel_map, pMemFreeBSD->pObject, 0,
337	&MapAddress, pMemFreeBSD->Core.cb, 0, VMFS_ANY_SPACE,
338	fExecutable ? VM_PROT_ALL : VM_PROT_RW, VM_PROT_ALL, 0);
339	#else
340	rc = vm_map_find(kernel_map, pMemFreeBSD->pObject, 0,
341	&MapAddress, pMemFreeBSD->Core.cb, VMFS_ANY_SPACE,
342	fExecutable ? VM_PROT_ALL : VM_PROT_RW, VM_PROT_ALL, 0);
343	#endif
344
345	if (rc == KERN_SUCCESS)
346	{
347	rc = rtR0MemObjFreeBSDPhysAllocHelper(pMemFreeBSD->pObject, cPages, VmPhysAddrHigh, PAGE_SIZE,
348	fContiguous, false /fWire/, rcNoMem);
349	if (RT_SUCCESS(rc))
350	{
351	vm_map_wire(kernel_map, MapAddress, MapAddress + pMemFreeBSD->Core.cb, VM_MAP_WIRE_SYSTEM \| VM_MAP_WIRE_NOHOLES);
352
353	/* Store start address */
354	pMemFreeBSD->Core.pv = (void *)MapAddress;
355	pMemFreeBSD->Core.fFlags \|= RTR0MEMOBJ_FLAGS_UNINITIALIZED_AT_ALLOC;
356	return VINF_SUCCESS;
357	}
358
359	vm_map_remove(kernel_map, MapAddress, MapAddress + pMemFreeBSD->Core.cb);
360	}
361	else
362	{
363	rc = rcNoMem; /** @todo fix translation (borrow from darwin) */
364	vm_object_deallocate(pMemFreeBSD->pObject);
365	}
366
367	rtR0MemObjDelete(&pMemFreeBSD->Core);
368	return rc;
369	}
370
371
372	DECLHIDDEN(int) rtR0MemObjNativeAllocPage(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, bool fExecutable, const char *pszTag)
373	{
374	PRTR0MEMOBJFREEBSD pMemFreeBSD = (PRTR0MEMOBJFREEBSD)rtR0MemObjNew(sizeof(*pMemFreeBSD), RTR0MEMOBJTYPE_PAGE,
375	NULL, cb, pszTag);
376	if (pMemFreeBSD)
377	{
378	int rc = rtR0MemObjFreeBSDAllocHelper(pMemFreeBSD, fExecutable, ~(vm_paddr_t)0, false /fContiguous/, VERR_NO_MEMORY);
379	if (RT_SUCCESS(rc))
380	*ppMem = &pMemFreeBSD->Core;
381	else
382	rtR0MemObjDelete(&pMemFreeBSD->Core);
383	return rc;
384	}
385	return VERR_NO_MEMORY;
386	}
387
388
389	DECLHIDDEN(int) rtR0MemObjNativeAllocLarge(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, size_t cbLargePage, uint32_t fFlags,
390	const char *pszTag)
391	{
392	return rtR0MemObjFallbackAllocLarge(ppMem, cb, cbLargePage, fFlags, pszTag);
393	}
394
395
396	DECLHIDDEN(int) rtR0MemObjNativeAllocLow(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, bool fExecutable, const char *pszTag)
397	{
398	PRTR0MEMOBJFREEBSD pMemFreeBSD = (PRTR0MEMOBJFREEBSD)rtR0MemObjNew(sizeof(*pMemFreeBSD), RTR0MEMOBJTYPE_LOW, NULL, cb, pszTag);
399	if (pMemFreeBSD)
400	{
401	int rc = rtR0MemObjFreeBSDAllocHelper(pMemFreeBSD, fExecutable, _4G - 1, false /fContiguous/, VERR_NO_LOW_MEMORY);
402	if (RT_SUCCESS(rc))
403	*ppMem = &pMemFreeBSD->Core;
404	else
405	rtR0MemObjDelete(&pMemFreeBSD->Core);
406	return rc;
407	}
408	return VERR_NO_MEMORY;
409	}
410
411
412	DECLHIDDEN(int) rtR0MemObjNativeAllocCont(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, bool fExecutable, const char *pszTag)
413	{
414	PRTR0MEMOBJFREEBSD pMemFreeBSD = (PRTR0MEMOBJFREEBSD)rtR0MemObjNew(sizeof(*pMemFreeBSD), RTR0MEMOBJTYPE_CONT,
415	NULL, cb, pszTag);
416	if (pMemFreeBSD)
417	{
418	int rc = rtR0MemObjFreeBSDAllocHelper(pMemFreeBSD, fExecutable, _4G - 1, true /fContiguous/, VERR_NO_CONT_MEMORY);
419	if (RT_SUCCESS(rc))
420	{
421	pMemFreeBSD->Core.u.Cont.Phys = vtophys(pMemFreeBSD->Core.pv);
422	*ppMem = &pMemFreeBSD->Core;
423	}
424	else
425	rtR0MemObjDelete(&pMemFreeBSD->Core);
426	return rc;
427	}
428	return VERR_NO_MEMORY;
429	}
430
431
432	static int rtR0MemObjFreeBSDAllocPhysPages(PPRTR0MEMOBJINTERNAL ppMem, RTR0MEMOBJTYPE enmType, size_t cb, RTHCPHYS PhysHighest,
433	size_t uAlignment, bool fContiguous, int rcNoMem, const char *pszTag)
434	{
435	/* create the object. */
436	PRTR0MEMOBJFREEBSD pMemFreeBSD = (PRTR0MEMOBJFREEBSD)rtR0MemObjNew(sizeof(*pMemFreeBSD), enmType, NULL, cb, pszTag);
437	if (pMemFreeBSD)
438	{
439	vm_paddr_t const VmPhysAddrHigh = PhysHighest != NIL_RTHCPHYS ? PhysHighest : ~(vm_paddr_t)0;
440	u_long const cPages = atop(cb);
441
442	pMemFreeBSD->pObject = vm_object_allocate(OBJT_PHYS, cPages);
443
444	int rc = rtR0MemObjFreeBSDPhysAllocHelper(pMemFreeBSD->pObject, cPages, VmPhysAddrHigh,
445	uAlignment, fContiguous, true, rcNoMem);
446	if (RT_SUCCESS(rc))
447	{
448	if (fContiguous)
449	{
450	Assert(enmType == RTR0MEMOBJTYPE_PHYS);
451	VM_OBJECT_WLOCK(pMemFreeBSD->pObject);
452	pMemFreeBSD->Core.u.Phys.PhysBase = VM_PAGE_TO_PHYS(vm_page_find_least(pMemFreeBSD->pObject, 0));
453	VM_OBJECT_WUNLOCK(pMemFreeBSD->pObject);
454	pMemFreeBSD->Core.u.Phys.fAllocated = true;
455	}
456
457	pMemFreeBSD->Core.fFlags \|= RTR0MEMOBJ_FLAGS_UNINITIALIZED_AT_ALLOC;
458	*ppMem = &pMemFreeBSD->Core;
459	}
460	else
461	{
462	vm_object_deallocate(pMemFreeBSD->pObject);
463	rtR0MemObjDelete(&pMemFreeBSD->Core);
464	}
465	return rc;
466	}
467	return VERR_NO_MEMORY;
468	}
469
470
471	DECLHIDDEN(int) rtR0MemObjNativeAllocPhys(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, RTHCPHYS PhysHighest, size_t uAlignment,
472	const char *pszTag)
473	{
474	return rtR0MemObjFreeBSDAllocPhysPages(ppMem, RTR0MEMOBJTYPE_PHYS, cb, PhysHighest, uAlignment, true, VERR_NO_MEMORY, pszTag);
475	}
476
477
478	DECLHIDDEN(int) rtR0MemObjNativeAllocPhysNC(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, RTHCPHYS PhysHighest, const char *pszTag)
479	{
480	return rtR0MemObjFreeBSDAllocPhysPages(ppMem, RTR0MEMOBJTYPE_PHYS_NC, cb, PhysHighest, PAGE_SIZE, false,
481	VERR_NO_PHYS_MEMORY, pszTag);
482	}
483
484
485	DECLHIDDEN(int) rtR0MemObjNativeEnterPhys(PPRTR0MEMOBJINTERNAL ppMem, RTHCPHYS Phys, size_t cb, uint32_t uCachePolicy,
486	const char *pszTag)
487	{
488	AssertReturn(uCachePolicy == RTMEM_CACHE_POLICY_DONT_CARE, VERR_NOT_SUPPORTED);
489
490	/* create the object. */
491	PRTR0MEMOBJFREEBSD pMemFreeBSD = (PRTR0MEMOBJFREEBSD)rtR0MemObjNew(sizeof(*pMemFreeBSD), RTR0MEMOBJTYPE_PHYS,
492	NULL, cb, pszTag);
493	if (pMemFreeBSD)
494	{
495	/* there is no allocation here, it needs to be mapped somewhere first. */
496	pMemFreeBSD->Core.u.Phys.fAllocated = false;
497	pMemFreeBSD->Core.u.Phys.PhysBase = Phys;
498	pMemFreeBSD->Core.u.Phys.uCachePolicy = uCachePolicy;
499	*ppMem = &pMemFreeBSD->Core;
500	return VINF_SUCCESS;
501	}
502	return VERR_NO_MEMORY;
503	}
504
505
506	/**
507	* Worker locking the memory in either kernel or user maps.
508	*/
509	static int rtR0MemObjNativeLockInMap(PPRTR0MEMOBJINTERNAL ppMem, vm_map_t pVmMap,
510	vm_offset_t AddrStart, size_t cb, uint32_t fAccess,
511	RTR0PROCESS R0Process, int fFlags, const char *pszTag)
512	{
513	int rc;
514	NOREF(fAccess);
515
516	/* create the object. */
517	PRTR0MEMOBJFREEBSD pMemFreeBSD = (PRTR0MEMOBJFREEBSD)rtR0MemObjNew(sizeof(*pMemFreeBSD), RTR0MEMOBJTYPE_LOCK,
518	(void *)AddrStart, cb, pszTag);
519	if (!pMemFreeBSD)
520	return VERR_NO_MEMORY;
521
522	/*
523	* We could've used vslock here, but we don't wish to be subject to
524	* resource usage restrictions, so we'll call vm_map_wire directly.
525	*/
526	rc = vm_map_wire(pVmMap, /* the map */
527	AddrStart, /* start */
528	AddrStart + cb, /* end */
529	fFlags); /* flags */
530	if (rc == KERN_SUCCESS)
531	{
532	pMemFreeBSD->Core.u.Lock.R0Process = R0Process;
533	*ppMem = &pMemFreeBSD->Core;
534	return VINF_SUCCESS;
535	}
536	rtR0MemObjDelete(&pMemFreeBSD->Core);
537	return VERR_NO_MEMORY;/** @todo fix mach -> vbox error conversion for freebsd. */
538	}
539
540
541	DECLHIDDEN(int) rtR0MemObjNativeLockUser(PPRTR0MEMOBJINTERNAL ppMem, RTR3PTR R3Ptr, size_t cb, uint32_t fAccess,
542	RTR0PROCESS R0Process, const char *pszTag)
543	{
544	return rtR0MemObjNativeLockInMap(ppMem,
545	&((struct proc *)R0Process)->p_vmspace->vm_map,
546	(vm_offset_t)R3Ptr,
547	cb,
548	fAccess,
549	R0Process,
550	VM_MAP_WIRE_USER \| VM_MAP_WIRE_NOHOLES,
551	pszTag);
552	}
553
554
555	DECLHIDDEN(int) rtR0MemObjNativeLockKernel(PPRTR0MEMOBJINTERNAL ppMem, void pv, size_t cb, uint32_t fAccess, const char pszTag)
556	{
557	return rtR0MemObjNativeLockInMap(ppMem,
558	kernel_map,
559	(vm_offset_t)pv,
560	cb,
561	fAccess,
562	NIL_RTR0PROCESS,
563	VM_MAP_WIRE_SYSTEM \| VM_MAP_WIRE_NOHOLES,
564	pszTag);
565	}
566
567
568	/**
569	* Worker for the two virtual address space reservers.
570	*
571	* We're leaning on the examples provided by mmap and vm_mmap in vm_mmap.c here.
572	*/
573	static int rtR0MemObjNativeReserveInMap(PPRTR0MEMOBJINTERNAL ppMem, void *pvFixed, size_t cb, size_t uAlignment,
574	RTR0PROCESS R0Process, vm_map_t pMap, const char *pszTag)
575	{
576	int rc;
577
578	/*
579	* The pvFixed address range must be within the VM space when specified.
580	*/
581	if ( pvFixed != (void *)-1
582	&& ( (vm_offset_t)pvFixed < vm_map_min(pMap)
583	\|\| (vm_offset_t)pvFixed + cb > vm_map_max(pMap)))
584	return VERR_INVALID_PARAMETER;
585
586	/*
587	* Check that the specified alignment is supported.
588	*/
589	if (uAlignment > PAGE_SIZE)
590	return VERR_NOT_SUPPORTED;
591
592	/*
593	* Create the object.
594	*/
595	PRTR0MEMOBJFREEBSD pMemFreeBSD = (PRTR0MEMOBJFREEBSD)rtR0MemObjNew(sizeof(*pMemFreeBSD), RTR0MEMOBJTYPE_RES_VIRT,
596	NULL, cb, pszTag);
597	if (!pMemFreeBSD)
598	return VERR_NO_MEMORY;
599
600	vm_offset_t MapAddress = pvFixed != (void *)-1
601	? (vm_offset_t)pvFixed
602	: vm_map_min(pMap);
603	if (pvFixed != (void *)-1)
604	vm_map_remove(pMap,
605	MapAddress,
606	MapAddress + cb);
607
608	rc = vm_map_find(pMap, /* map */
609	NULL, /* object */
610	0, /* offset */
611	&MapAddress, /* addr (IN/OUT) */
612	cb, /* length */
613	#if __FreeBSD_version >= 1000055
614	0, /* max addr */
615	#endif
616	pvFixed == (void *)-1 ? VMFS_ANY_SPACE : VMFS_NO_SPACE,
617	/* find_space */
618	VM_PROT_NONE, /* protection */
619	VM_PROT_ALL, /* max(_prot) ?? */
620	0); /* cow (copy-on-write) */
621	if (rc == KERN_SUCCESS)
622	{
623	if (R0Process != NIL_RTR0PROCESS)
624	{
625	rc = vm_map_inherit(pMap,
626	MapAddress,
627	MapAddress + cb,
628	VM_INHERIT_SHARE);
629	AssertMsg(rc == KERN_SUCCESS, ("%#x\n", rc));
630	}
631	pMemFreeBSD->Core.pv = (void *)MapAddress;
632	pMemFreeBSD->Core.u.ResVirt.R0Process = R0Process;
633	*ppMem = &pMemFreeBSD->Core;
634	return VINF_SUCCESS;
635	}
636
637	rc = VERR_NO_MEMORY; /** @todo fix translation (borrow from darwin) */
638	rtR0MemObjDelete(&pMemFreeBSD->Core);
639	return rc;
640
641	}
642
643
644	DECLHIDDEN(int) rtR0MemObjNativeReserveKernel(PPRTR0MEMOBJINTERNAL ppMem, void *pvFixed, size_t cb, size_t uAlignment,
645	const char *pszTag)
646	{
647	return rtR0MemObjNativeReserveInMap(ppMem, pvFixed, cb, uAlignment, NIL_RTR0PROCESS, kernel_map, pszTag);
648	}
649
650
651	DECLHIDDEN(int) rtR0MemObjNativeReserveUser(PPRTR0MEMOBJINTERNAL ppMem, RTR3PTR R3PtrFixed, size_t cb, size_t uAlignment,
652	RTR0PROCESS R0Process, const char *pszTag)
653	{
654	return rtR0MemObjNativeReserveInMap(ppMem, (void *)R3PtrFixed, cb, uAlignment, R0Process,
655	&((struct proc *)R0Process)->p_vmspace->vm_map, pszTag);
656	}
657
658
659	DECLHIDDEN(int) rtR0MemObjNativeMapKernel(PPRTR0MEMOBJINTERNAL ppMem, RTR0MEMOBJ pMemToMap, void *pvFixed, size_t uAlignment,
660	unsigned fProt, size_t offSub, size_t cbSub, const char *pszTag)
661	{
662	// AssertMsgReturn(!offSub && !cbSub, ("%#x %#x\n", offSub, cbSub), VERR_NOT_SUPPORTED);
663	AssertMsgReturn(pvFixed == (void *)-1, ("%p\n", pvFixed), VERR_NOT_SUPPORTED);
664
665	/*
666	* Check that the specified alignment is supported.
667	*/
668	if (uAlignment > PAGE_SIZE)
669	return VERR_NOT_SUPPORTED;
670	Assert(!offSub \|\| cbSub);
671
672	int rc;
673	PRTR0MEMOBJFREEBSD pMemToMapFreeBSD = (PRTR0MEMOBJFREEBSD)pMemToMap;
674
675	/* calc protection */
676	vm_prot_t ProtectionFlags = 0;
677	if ((fProt & RTMEM_PROT_NONE) == RTMEM_PROT_NONE)
678	ProtectionFlags = VM_PROT_NONE;
679	if ((fProt & RTMEM_PROT_READ) == RTMEM_PROT_READ)
680	ProtectionFlags \|= VM_PROT_READ;
681	if ((fProt & RTMEM_PROT_WRITE) == RTMEM_PROT_WRITE)
682	ProtectionFlags \|= VM_PROT_WRITE;
683	if ((fProt & RTMEM_PROT_EXEC) == RTMEM_PROT_EXEC)
684	ProtectionFlags \|= VM_PROT_EXECUTE;
685
686	vm_offset_t Addr = vm_map_min(kernel_map);
687	if (cbSub == 0)
688	cbSub = pMemToMap->cb - offSub;
689
690	vm_object_reference(pMemToMapFreeBSD->pObject);
691	rc = vm_map_find(kernel_map, /* Map to insert the object in */
692	pMemToMapFreeBSD->pObject, /* Object to map */
693	offSub, /* Start offset in the object */
694	&Addr, /* Start address IN/OUT */
695	cbSub, /* Size of the mapping */
696	#if __FreeBSD_version >= 1000055
697	0, /* Upper bound of mapping */
698	#endif
699	VMFS_ANY_SPACE, /* Whether a suitable address should be searched for first */
700	ProtectionFlags, /* protection flags */
701	VM_PROT_ALL, /* Maximum protection flags */
702	0); /* copy-on-write and similar flags */
703
704	if (rc == KERN_SUCCESS)
705	{
706	rc = vm_map_wire(kernel_map, Addr, Addr + cbSub, VM_MAP_WIRE_SYSTEM \| VM_MAP_WIRE_NOHOLES);
707	AssertMsg(rc == KERN_SUCCESS, ("%#x\n", rc));
708
709	PRTR0MEMOBJFREEBSD pMemFreeBSD = (PRTR0MEMOBJFREEBSD)rtR0MemObjNew(sizeof(RTR0MEMOBJFREEBSD), RTR0MEMOBJTYPE_MAPPING,
710	(void *)Addr, cbSub, pszTag);
711	if (pMemFreeBSD)
712	{
713	Assert((vm_offset_t)pMemFreeBSD->Core.pv == Addr);
714	pMemFreeBSD->Core.u.Mapping.R0Process = NIL_RTR0PROCESS;
715	*ppMem = &pMemFreeBSD->Core;
716	return VINF_SUCCESS;
717	}
718	rc = vm_map_remove(kernel_map, Addr, Addr + cbSub);
719	AssertMsg(rc == KERN_SUCCESS, ("Deleting mapping failed\n"));
720	}
721	else
722	vm_object_deallocate(pMemToMapFreeBSD->pObject);
723
724	return VERR_NO_MEMORY;
725	}
726
727
728	DECLHIDDEN(int) rtR0MemObjNativeMapUser(PPRTR0MEMOBJINTERNAL ppMem, RTR0MEMOBJ pMemToMap, RTR3PTR R3PtrFixed, size_t uAlignment,
729	unsigned fProt, RTR0PROCESS R0Process, size_t offSub, size_t cbSub, const char *pszTag)
730	{
731	/*
732	* Check for unsupported stuff.
733	*/
734	AssertMsgReturn(R0Process == RTR0ProcHandleSelf(), ("%p != %p\n", R0Process, RTR0ProcHandleSelf()), VERR_NOT_SUPPORTED);
735	if (uAlignment > PAGE_SIZE)
736	return VERR_NOT_SUPPORTED;
737	Assert(!offSub \|\| cbSub);
738
739	int rc;
740	PRTR0MEMOBJFREEBSD pMemToMapFreeBSD = (PRTR0MEMOBJFREEBSD)pMemToMap;
741	struct proc pProc = (struct proc )R0Process;
742	struct vm_map *pProcMap = &pProc->p_vmspace->vm_map;
743
744	/* calc protection */
745	vm_prot_t ProtectionFlags = 0;
746	if ((fProt & RTMEM_PROT_NONE) == RTMEM_PROT_NONE)
747	ProtectionFlags = VM_PROT_NONE;
748	if ((fProt & RTMEM_PROT_READ) == RTMEM_PROT_READ)
749	ProtectionFlags \|= VM_PROT_READ;
750	if ((fProt & RTMEM_PROT_WRITE) == RTMEM_PROT_WRITE)
751	ProtectionFlags \|= VM_PROT_WRITE;
752	if ((fProt & RTMEM_PROT_EXEC) == RTMEM_PROT_EXEC)
753	ProtectionFlags \|= VM_PROT_EXECUTE;
754
755	/* calc mapping address */
756	vm_offset_t AddrR3;
757	if (R3PtrFixed == (RTR3PTR)-1)
758	{
759	/** @todo is this needed?. */
760	PROC_LOCK(pProc);
761	AddrR3 = round_page((vm_offset_t)pProc->p_vmspace->vm_daddr + MY_LIM_MAX_PROC(pProc, RLIMIT_DATA));
762	PROC_UNLOCK(pProc);
763	}
764	else
765	AddrR3 = (vm_offset_t)R3PtrFixed;
766
767	if (cbSub == 0)
768	cbSub = pMemToMap->cb - offSub;
769
770	/* Insert the pObject in the map. */
771	vm_object_reference(pMemToMapFreeBSD->pObject);
772	rc = vm_map_find(pProcMap, /* Map to insert the object in */
773	pMemToMapFreeBSD->pObject, /* Object to map */
774	offSub, /* Start offset in the object */
775	&AddrR3, /* Start address IN/OUT */
776	cbSub, /* Size of the mapping */
777	#if __FreeBSD_version >= 1000055
778	0, /* Upper bound of the mapping */
779	#endif
780	R3PtrFixed == (RTR3PTR)-1 ? VMFS_ANY_SPACE : VMFS_NO_SPACE,
781	/* Whether a suitable address should be searched for first */
782	ProtectionFlags, /* protection flags */
783	VM_PROT_ALL, /* Maximum protection flags */
784	0); /* copy-on-write and similar flags */
785
786	if (rc == KERN_SUCCESS)
787	{
788	rc = vm_map_wire(pProcMap, AddrR3, AddrR3 + pMemToMap->cb, VM_MAP_WIRE_USER\|VM_MAP_WIRE_NOHOLES);
789	AssertMsg(rc == KERN_SUCCESS, ("%#x\n", rc));
790
791	rc = vm_map_inherit(pProcMap, AddrR3, AddrR3 + pMemToMap->cb, VM_INHERIT_SHARE);
792	AssertMsg(rc == KERN_SUCCESS, ("%#x\n", rc));
793
794	/*
795	* Create a mapping object for it.
796	*/
797	PRTR0MEMOBJFREEBSD pMemFreeBSD = (PRTR0MEMOBJFREEBSD)rtR0MemObjNew(sizeof(RTR0MEMOBJFREEBSD), RTR0MEMOBJTYPE_MAPPING,
798	(void *)AddrR3, pMemToMap->cb, pszTag);
799	if (pMemFreeBSD)
800	{
801	Assert((vm_offset_t)pMemFreeBSD->Core.pv == AddrR3);
802	pMemFreeBSD->Core.u.Mapping.R0Process = R0Process;
803	*ppMem = &pMemFreeBSD->Core;
804	return VINF_SUCCESS;
805	}
806
807	rc = vm_map_remove(pProcMap, AddrR3, AddrR3 + pMemToMap->cb);
808	AssertMsg(rc == KERN_SUCCESS, ("Deleting mapping failed\n"));
809	}
810	else
811	vm_object_deallocate(pMemToMapFreeBSD->pObject);
812
813	return VERR_NO_MEMORY;
814	}
815
816
817	DECLHIDDEN(int) rtR0MemObjNativeProtect(PRTR0MEMOBJINTERNAL pMem, size_t offSub, size_t cbSub, uint32_t fProt)
818	{
819	vm_prot_t ProtectionFlags = 0;
820	vm_offset_t AddrStart = (uintptr_t)pMem->pv + offSub;
821	vm_offset_t AddrEnd = AddrStart + cbSub;
822	vm_map_t pVmMap = rtR0MemObjFreeBSDGetMap(pMem);
823
824	if (!pVmMap)
825	return VERR_NOT_SUPPORTED;
826
827	if ((fProt & RTMEM_PROT_NONE) == RTMEM_PROT_NONE)
828	ProtectionFlags = VM_PROT_NONE;
829	if ((fProt & RTMEM_PROT_READ) == RTMEM_PROT_READ)
830	ProtectionFlags \|= VM_PROT_READ;
831	if ((fProt & RTMEM_PROT_WRITE) == RTMEM_PROT_WRITE)
832	ProtectionFlags \|= VM_PROT_WRITE;
833	if ((fProt & RTMEM_PROT_EXEC) == RTMEM_PROT_EXEC)
834	ProtectionFlags \|= VM_PROT_EXECUTE;
835
836	int krc = vm_map_protect(pVmMap, AddrStart, AddrEnd, ProtectionFlags, FALSE);
837	if (krc == KERN_SUCCESS)
838	return VINF_SUCCESS;
839
840	return VERR_NOT_SUPPORTED;
841	}
842
843
844	DECLHIDDEN(RTHCPHYS) rtR0MemObjNativeGetPagePhysAddr(PRTR0MEMOBJINTERNAL pMem, size_t iPage)
845	{
846	PRTR0MEMOBJFREEBSD pMemFreeBSD = (PRTR0MEMOBJFREEBSD)pMem;
847
848	switch (pMemFreeBSD->Core.enmType)
849	{
850	case RTR0MEMOBJTYPE_LOCK:
851	{
852	if ( pMemFreeBSD->Core.u.Lock.R0Process != NIL_RTR0PROCESS
853	&& pMemFreeBSD->Core.u.Lock.R0Process != (RTR0PROCESS)curproc)
854	{
855	/* later */
856	return NIL_RTHCPHYS;
857	}
858
859	vm_offset_t pb = (vm_offset_t)pMemFreeBSD->Core.pv + ptoa(iPage);
860
861	struct proc pProc = (struct proc )pMemFreeBSD->Core.u.Lock.R0Process;
862	struct vm_map *pProcMap = &pProc->p_vmspace->vm_map;
863	pmap_t pPhysicalMap = vm_map_pmap(pProcMap);
864
865	return pmap_extract(pPhysicalMap, pb);
866	}
867
868	case RTR0MEMOBJTYPE_MAPPING:
869	{
870	vm_offset_t pb = (vm_offset_t)pMemFreeBSD->Core.pv + ptoa(iPage);
871
872	if (pMemFreeBSD->Core.u.Mapping.R0Process != NIL_RTR0PROCESS)
873	{
874	struct proc pProc = (struct proc )pMemFreeBSD->Core.u.Mapping.R0Process;
875	struct vm_map *pProcMap = &pProc->p_vmspace->vm_map;
876	pmap_t pPhysicalMap = vm_map_pmap(pProcMap);
877
878	return pmap_extract(pPhysicalMap, pb);
879	}
880	return vtophys(pb);
881	}
882
883	case RTR0MEMOBJTYPE_PAGE:
884	case RTR0MEMOBJTYPE_LOW:
885	case RTR0MEMOBJTYPE_PHYS_NC:
886	{
887	RTHCPHYS addr;
888
889	VM_OBJECT_WLOCK(pMemFreeBSD->pObject);
890	addr = VM_PAGE_TO_PHYS(vm_page_lookup(pMemFreeBSD->pObject, iPage));
891	VM_OBJECT_WUNLOCK(pMemFreeBSD->pObject);
892	return addr;
893	}
894
895	case RTR0MEMOBJTYPE_PHYS:
896	return pMemFreeBSD->Core.u.Cont.Phys + ptoa(iPage);
897
898	case RTR0MEMOBJTYPE_CONT:
899	return pMemFreeBSD->Core.u.Phys.PhysBase + ptoa(iPage);
900
901	case RTR0MEMOBJTYPE_RES_VIRT:
902	default:
903	return NIL_RTHCPHYS;
904	}
905	}
906

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source: vbox/trunk/src/VBox/Runtime/r0drv/freebsd/memobj-r0drv-freebsd.c@ 96445

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