memobj-r0drv-freebsd.c@ 91481

Last change on this file since 91481 was 91481, checked in by vboxsync, 3 years ago
IPRT/memobj: Passing pszTag around...
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1	/* $Id: memobj-r0drv-freebsd.c 91481 2021-09-30 00:06:31Z 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) 2007-2020 Oracle Corporation
10	*
11	* This file is part of VirtualBox Open Source Edition (OSE), as
12	* available from http://www.virtualbox.org. This file is free software;
13	* you can redistribute it and/or modify it under the terms of the GNU
14	* General Public License (GPL) as published by the Free Software
15	* Foundation, in version 2 as it comes in the "COPYING" file of the
16	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
17	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
18	*
19	* The contents of this file may alternatively be used under the terms
20	* of the Common Development and Distribution License Version 1.0
21	* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
22	* VirtualBox OSE distribution, in which case the provisions of the
23	* CDDL are applicable instead of those of the GPL.
24	*
25	* You may elect to license modified versions of this file under the
26	* terms and conditions of either the GPL or the CDDL or both.
27	* --------------------------------------------------------------------
28	*
29	* This code is based on:
30	*
31	* Copyright (c) 2007 knut st. osmundsen <[email protected]>
32	* Copyright (c) 2011 Andriy Gapon <[email protected]>
33	*
34	* Permission is hereby granted, free of charge, to any person
35	* obtaining a copy of this software and associated documentation
36	* files (the "Software"), to deal in the Software without
37	* restriction, including without limitation the rights to use,
38	* copy, modify, merge, publish, distribute, sublicense, and/or sell
39	* copies of the Software, and to permit persons to whom the
40	* Software is furnished to do so, subject to the following
41	* conditions:
42	*
43	* The above copyright notice and this permission notice shall be
44	* included in all copies or substantial portions of the Software.
45	*
46	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
47	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
48	* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
49	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
50	* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
51	* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
52	* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
53	* OTHER DEALINGS IN THE SOFTWARE.
54	*/
55
56
57	/*********************************************************************************************************************************
58	* Header Files *
59	*********************************************************************************************************************************/
60	#include "the-freebsd-kernel.h"
61
62	#include <iprt/memobj.h>
63	#include <iprt/mem.h>
64	#include <iprt/err.h>
65	#include <iprt/assert.h>
66	#include <iprt/log.h>
67	#include <iprt/param.h>
68	#include <iprt/process.h>
69	#include "internal/memobj.h"
70
71
72	/*********************************************************************************************************************************
73	* Structures and Typedefs *
74	*********************************************************************************************************************************/
75	/**
76	* The FreeBSD version of the memory object structure.
77	*/
78	typedef struct RTR0MEMOBJFREEBSD
79	{
80	/** The core structure. */
81	RTR0MEMOBJINTERNAL Core;
82	/** The VM object associated with the allocation. */
83	vm_object_t pObject;
84	} RTR0MEMOBJFREEBSD, *PRTR0MEMOBJFREEBSD;
85
86
87	MALLOC_DEFINE(M_IPRTMOBJ, "iprtmobj", "IPRT - R0MemObj");
88
89
90	/**
91	* Gets the virtual memory map the specified object is mapped into.
92	*
93	* @returns VM map handle on success, NULL if no map.
94	* @param pMem The memory object.
95	*/
96	static vm_map_t rtR0MemObjFreeBSDGetMap(PRTR0MEMOBJINTERNAL pMem)
97	{
98	switch (pMem->enmType)
99	{
100	case RTR0MEMOBJTYPE_PAGE:
101	case RTR0MEMOBJTYPE_LOW:
102	case RTR0MEMOBJTYPE_CONT:
103	return kernel_map;
104
105	case RTR0MEMOBJTYPE_PHYS:
106	case RTR0MEMOBJTYPE_PHYS_NC:
107	return NULL; /* pretend these have no mapping atm. */
108
109	case RTR0MEMOBJTYPE_LOCK:
110	return pMem->u.Lock.R0Process == NIL_RTR0PROCESS
111	? kernel_map
112	: &((struct proc *)pMem->u.Lock.R0Process)->p_vmspace->vm_map;
113
114	case RTR0MEMOBJTYPE_RES_VIRT:
115	return pMem->u.ResVirt.R0Process == NIL_RTR0PROCESS
116	? kernel_map
117	: &((struct proc *)pMem->u.ResVirt.R0Process)->p_vmspace->vm_map;
118
119	case RTR0MEMOBJTYPE_MAPPING:
120	return pMem->u.Mapping.R0Process == NIL_RTR0PROCESS
121	? kernel_map
122	: &((struct proc *)pMem->u.Mapping.R0Process)->p_vmspace->vm_map;
123
124	default:
125	return NULL;
126	}
127	}
128
129
130	DECLHIDDEN(int) rtR0MemObjNativeFree(RTR0MEMOBJ pMem)
131	{
132	PRTR0MEMOBJFREEBSD pMemFreeBSD = (PRTR0MEMOBJFREEBSD)pMem;
133	int rc;
134
135	switch (pMemFreeBSD->Core.enmType)
136	{
137	case RTR0MEMOBJTYPE_PAGE:
138	case RTR0MEMOBJTYPE_LOW:
139	case RTR0MEMOBJTYPE_CONT:
140	rc = vm_map_remove(kernel_map,
141	(vm_offset_t)pMemFreeBSD->Core.pv,
142	(vm_offset_t)pMemFreeBSD->Core.pv + pMemFreeBSD->Core.cb);
143	AssertMsg(rc == KERN_SUCCESS, ("%#x", rc));
144	break;
145
146	case RTR0MEMOBJTYPE_LOCK:
147	{
148	vm_map_t pMap = kernel_map;
149
150	if (pMemFreeBSD->Core.u.Lock.R0Process != NIL_RTR0PROCESS)
151	pMap = &((struct proc *)pMemFreeBSD->Core.u.Lock.R0Process)->p_vmspace->vm_map;
152
153	rc = vm_map_unwire(pMap,
154	(vm_offset_t)pMemFreeBSD->Core.pv,
155	(vm_offset_t)pMemFreeBSD->Core.pv + pMemFreeBSD->Core.cb,
156	VM_MAP_WIRE_SYSTEM \| VM_MAP_WIRE_NOHOLES);
157	AssertMsg(rc == KERN_SUCCESS, ("%#x", rc));
158	break;
159	}
160
161	case RTR0MEMOBJTYPE_RES_VIRT:
162	{
163	vm_map_t pMap = kernel_map;
164	if (pMemFreeBSD->Core.u.ResVirt.R0Process != NIL_RTR0PROCESS)
165	pMap = &((struct proc *)pMemFreeBSD->Core.u.ResVirt.R0Process)->p_vmspace->vm_map;
166	rc = vm_map_remove(pMap,
167	(vm_offset_t)pMemFreeBSD->Core.pv,
168	(vm_offset_t)pMemFreeBSD->Core.pv + pMemFreeBSD->Core.cb);
169	AssertMsg(rc == KERN_SUCCESS, ("%#x", rc));
170	break;
171	}
172
173	case RTR0MEMOBJTYPE_MAPPING:
174	{
175	vm_map_t pMap = kernel_map;
176
177	if (pMemFreeBSD->Core.u.Mapping.R0Process != NIL_RTR0PROCESS)
178	pMap = &((struct proc *)pMemFreeBSD->Core.u.Mapping.R0Process)->p_vmspace->vm_map;
179	rc = vm_map_remove(pMap,
180	(vm_offset_t)pMemFreeBSD->Core.pv,
181	(vm_offset_t)pMemFreeBSD->Core.pv + pMemFreeBSD->Core.cb);
182	AssertMsg(rc == KERN_SUCCESS, ("%#x", rc));
183	break;
184	}
185
186	case RTR0MEMOBJTYPE_PHYS:
187	case RTR0MEMOBJTYPE_PHYS_NC:
188	{
189	VM_OBJECT_WLOCK(pMemFreeBSD->pObject);
190	vm_page_t pPage = vm_page_find_least(pMemFreeBSD->pObject, 0);
191	#if __FreeBSD_version < 1000000
192	vm_page_lock_queues();
193	#endif
194	for (vm_page_t pPage = vm_page_find_least(pMemFreeBSD->pObject, 0);
195	pPage != NULL;
196	pPage = vm_page_next(pPage))
197	{
198	vm_page_unwire(pPage, 0);
199	}
200	#if __FreeBSD_version < 1000000
201	vm_page_unlock_queues();
202	#endif
203	VM_OBJECT_WUNLOCK(pMemFreeBSD->pObject);
204	vm_object_deallocate(pMemFreeBSD->pObject);
205	break;
206	}
207
208	default:
209	AssertMsgFailed(("enmType=%d\n", pMemFreeBSD->Core.enmType));
210	return VERR_INTERNAL_ERROR;
211	}
212
213	return VINF_SUCCESS;
214	}
215
216
217	static vm_page_t rtR0MemObjFreeBSDContigPhysAllocHelper(vm_object_t pObject, vm_pindex_t iPIndex,
218	u_long cPages, vm_paddr_t VmPhysAddrHigh,
219	u_long uAlignment, bool fWire)
220	{
221	vm_page_t pPages;
222	int cTries = 0;
223
224	#if __FreeBSD_version > 1000000
225	int fFlags = VM_ALLOC_INTERRUPT \| VM_ALLOC_NOBUSY;
226	if (fWire)
227	fFlags \|= VM_ALLOC_WIRED;
228
229	while (cTries <= 1)
230	{
231	VM_OBJECT_WLOCK(pObject);
232	pPages = vm_page_alloc_contig(pObject, iPIndex, fFlags, cPages, 0,
233	VmPhysAddrHigh, uAlignment, 0, VM_MEMATTR_DEFAULT);
234	VM_OBJECT_WUNLOCK(pObject);
235	if (pPages)
236	break;
237	#if __FreeBSD_version >= 1100092
238	if (!vm_page_reclaim_contig(cTries, cPages, 0, VmPhysAddrHigh, PAGE_SIZE, 0))
239	break;
240	#else
241	vm_pageout_grow_cache(cTries, 0, VmPhysAddrHigh);
242	#endif
243	cTries++;
244	}
245
246	return pPages;
247	#else
248	while (cTries <= 1)
249	{
250	pPages = vm_phys_alloc_contig(cPages, 0, VmPhysAddrHigh, uAlignment, 0);
251	if (pPages)
252	break;
253	vm_contig_grow_cache(cTries, 0, VmPhysAddrHigh);
254	cTries++;
255	}
256
257	if (!pPages)
258	return pPages;
259	VM_OBJECT_WLOCK(pObject);
260	for (vm_pindex_t iPage = 0; iPage < cPages; iPage++)
261	{
262	vm_page_t pPage = pPages + iPage;
263	vm_page_insert(pPage, pObject, iPIndex + iPage);
264	pPage->valid = VM_PAGE_BITS_ALL;
265	if (fWire)
266	{
267	pPage->wire_count = 1;
268	atomic_add_int(&cnt.v_wire_count, 1);
269	}
270	}
271	VM_OBJECT_WUNLOCK(pObject);
272	return pPages;
273	#endif
274	}
275
276	static int rtR0MemObjFreeBSDPhysAllocHelper(vm_object_t pObject, u_long cPages,
277	vm_paddr_t VmPhysAddrHigh, u_long uAlignment,
278	bool fContiguous, bool fWire, int rcNoMem)
279	{
280	if (fContiguous)
281	{
282	if (rtR0MemObjFreeBSDContigPhysAllocHelper(pObject, 0, cPages, VmPhysAddrHigh,
283	uAlignment, fWire) != NULL)
284	return VINF_SUCCESS;
285	return rcNoMem;
286	}
287
288	for (vm_pindex_t iPage = 0; iPage < cPages; iPage++)
289	{
290	vm_page_t pPage = rtR0MemObjFreeBSDContigPhysAllocHelper(pObject, iPage, 1, VmPhysAddrHigh,
291	uAlignment, fWire);
292	if (!pPage)
293	{
294	/* Free all allocated pages */
295	VM_OBJECT_WLOCK(pObject);
296	while (iPage-- > 0)
297	{
298	pPage = vm_page_lookup(pObject, iPage);
299	#if __FreeBSD_version < 1000000
300	vm_page_lock_queues();
301	#endif
302	if (fWire)
303	vm_page_unwire(pPage, 0);
304	vm_page_free(pPage);
305	#if __FreeBSD_version < 1000000
306	vm_page_unlock_queues();
307	#endif
308	}
309	VM_OBJECT_WUNLOCK(pObject);
310	return rcNoMem;
311	}
312	}
313	return VINF_SUCCESS;
314	}
315
316	static int rtR0MemObjFreeBSDAllocHelper(PRTR0MEMOBJFREEBSD pMemFreeBSD, bool fExecutable,
317	vm_paddr_t VmPhysAddrHigh, bool fContiguous, int rcNoMem)
318	{
319	vm_offset_t MapAddress = vm_map_min(kernel_map);
320	size_t cPages = atop(pMemFreeBSD->Core.cb);
321	int rc;
322
323	pMemFreeBSD->pObject = vm_object_allocate(OBJT_PHYS, cPages);
324
325	/* No additional object reference for auto-deallocation upon unmapping. */
326	#if __FreeBSD_version >= 1000055
327	rc = vm_map_find(kernel_map, pMemFreeBSD->pObject, 0,
328	&MapAddress, pMemFreeBSD->Core.cb, 0, VMFS_ANY_SPACE,
329	fExecutable ? VM_PROT_ALL : VM_PROT_RW, VM_PROT_ALL, 0);
330	#else
331	rc = vm_map_find(kernel_map, pMemFreeBSD->pObject, 0,
332	&MapAddress, pMemFreeBSD->Core.cb, VMFS_ANY_SPACE,
333	fExecutable ? VM_PROT_ALL : VM_PROT_RW, VM_PROT_ALL, 0);
334	#endif
335
336	if (rc == KERN_SUCCESS)
337	{
338	rc = rtR0MemObjFreeBSDPhysAllocHelper(pMemFreeBSD->pObject, cPages,
339	VmPhysAddrHigh, PAGE_SIZE, fContiguous,
340	false, rcNoMem);
341	if (RT_SUCCESS(rc))
342	{
343	vm_map_wire(kernel_map, MapAddress, MapAddress + pMemFreeBSD->Core.cb,
344	VM_MAP_WIRE_SYSTEM \| VM_MAP_WIRE_NOHOLES);
345
346	/* Store start address */
347	pMemFreeBSD->Core.pv = (void *)MapAddress;
348	return VINF_SUCCESS;
349	}
350
351	vm_map_remove(kernel_map, MapAddress, MapAddress + pMemFreeBSD->Core.cb);
352	}
353	else
354	{
355	rc = rcNoMem; /** @todo fix translation (borrow from darwin) */
356	vm_object_deallocate(pMemFreeBSD->pObject);
357	}
358
359	rtR0MemObjDelete(&pMemFreeBSD->Core);
360	return rc;
361	}
362
363
364	DECLHIDDEN(int) rtR0MemObjNativeAllocPage(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, bool fExecutable)
365	{
366	PRTR0MEMOBJFREEBSD pMemFreeBSD = (PRTR0MEMOBJFREEBSD)rtR0MemObjNew(sizeof(*pMemFreeBSD), RTR0MEMOBJTYPE_PAGE, NULL, cb, NULL);
367	if (!pMemFreeBSD)
368	return VERR_NO_MEMORY;
369
370	int rc = rtR0MemObjFreeBSDAllocHelper(pMemFreeBSD, fExecutable, ~(vm_paddr_t)0, false, VERR_NO_MEMORY);
371	if (RT_FAILURE(rc))
372	{
373	rtR0MemObjDelete(&pMemFreeBSD->Core);
374	return rc;
375	}
376
377	*ppMem = &pMemFreeBSD->Core;
378	return rc;
379	}
380
381
382	DECLHIDDEN(int) rtR0MemObjNativeAllocLarge(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, size_t cbLargePage, uint32_t fFlags,
383	const char *pszTag)
384	{
385	return rtR0MemObjFallbackAllocLarge(ppMem, cb, cbLargePage, fFlags, pszTag);
386	}
387
388
389	DECLHIDDEN(int) rtR0MemObjNativeAllocLow(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, bool fExecutable)
390	{
391	PRTR0MEMOBJFREEBSD pMemFreeBSD = (PRTR0MEMOBJFREEBSD)rtR0MemObjNew(sizeof(*pMemFreeBSD), RTR0MEMOBJTYPE_LOW, NULL, cb, NULL);
392	if (!pMemFreeBSD)
393	return VERR_NO_MEMORY;
394
395	int rc = rtR0MemObjFreeBSDAllocHelper(pMemFreeBSD, fExecutable, _4G - 1, false, VERR_NO_LOW_MEMORY);
396	if (RT_FAILURE(rc))
397	{
398	rtR0MemObjDelete(&pMemFreeBSD->Core);
399	return rc;
400	}
401
402	*ppMem = &pMemFreeBSD->Core;
403	return rc;
404	}
405
406
407	DECLHIDDEN(int) rtR0MemObjNativeAllocCont(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, bool fExecutable)
408	{
409	PRTR0MEMOBJFREEBSD pMemFreeBSD = (PRTR0MEMOBJFREEBSD)rtR0MemObjNew(sizeof(*pMemFreeBSD), RTR0MEMOBJTYPE_CONT, NULL, cb, NULL);
410	if (!pMemFreeBSD)
411	return VERR_NO_MEMORY;
412
413	int rc = rtR0MemObjFreeBSDAllocHelper(pMemFreeBSD, fExecutable, _4G - 1, true, VERR_NO_CONT_MEMORY);
414	if (RT_FAILURE(rc))
415	{
416	rtR0MemObjDelete(&pMemFreeBSD->Core);
417	return rc;
418	}
419
420	pMemFreeBSD->Core.u.Cont.Phys = vtophys(pMemFreeBSD->Core.pv);
421	*ppMem = &pMemFreeBSD->Core;
422	return rc;
423	}
424
425
426	static int rtR0MemObjFreeBSDAllocPhysPages(PPRTR0MEMOBJINTERNAL ppMem, RTR0MEMOBJTYPE enmType, size_t cb, RTHCPHYS PhysHighest,
427	size_t uAlignment, bool fContiguous, int rcNoMem, const char *pszTag)
428	{
429	uint32_t cPages = atop(cb);
430	vm_paddr_t VmPhysAddrHigh;
431
432	/* create the object. */
433	PRTR0MEMOBJFREEBSD pMemFreeBSD = (PRTR0MEMOBJFREEBSD)rtR0MemObjNew(sizeof(*pMemFreeBSD), enmType, NULL, cb, pszTag);
434	if (!pMemFreeBSD)
435	return VERR_NO_MEMORY;
436
437	pMemFreeBSD->pObject = vm_object_allocate(OBJT_PHYS, atop(cb));
438
439	if (PhysHighest != NIL_RTHCPHYS)
440	VmPhysAddrHigh = PhysHighest;
441	else
442	VmPhysAddrHigh = ~(vm_paddr_t)0;
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	*ppMem = &pMemFreeBSD->Core;
458	}
459	else
460	{
461	vm_object_deallocate(pMemFreeBSD->pObject);
462	rtR0MemObjDelete(&pMemFreeBSD->Core);
463	}
464
465	return rc;
466	}
467
468
469	DECLHIDDEN(int) rtR0MemObjNativeAllocPhys(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, RTHCPHYS PhysHighest, size_t uAlignment,
470	const char *pszTag)
471	{
472	return rtR0MemObjFreeBSDAllocPhysPages(ppMem, RTR0MEMOBJTYPE_PHYS, cb, PhysHighest, uAlignment, true, VERR_NO_MEMORY, pszTag);
473	}
474
475
476	DECLHIDDEN(int) rtR0MemObjNativeAllocPhysNC(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, RTHCPHYS PhysHighest, const char *pszTag)
477	{
478	return rtR0MemObjFreeBSDAllocPhysPages(ppMem, RTR0MEMOBJTYPE_PHYS_NC, cb, PhysHighest, PAGE_SIZE, false,
479	VERR_NO_PHYS_MEMORY, pszTag);
480	}
481
482
483	DECLHIDDEN(int) rtR0MemObjNativeEnterPhys(PPRTR0MEMOBJINTERNAL ppMem, RTHCPHYS Phys, size_t cb, uint32_t uCachePolicy,
484	const char *pszTag)
485	{
486	AssertReturn(uCachePolicy == RTMEM_CACHE_POLICY_DONT_CARE, VERR_NOT_SUPPORTED);
487
488	/* create the object. */
489	PRTR0MEMOBJFREEBSD pMemFreeBSD = (PRTR0MEMOBJFREEBSD)rtR0MemObjNew(sizeof(*pMemFreeBSD), RTR0MEMOBJTYPE_PHYS,
490	NULL, cb, pszTag);
491	if (!pMemFreeBSD)
492	return VERR_NO_MEMORY;
493
494	/* there is no allocation here, it needs to be mapped somewhere first. */
495	pMemFreeBSD->Core.u.Phys.fAllocated = false;
496	pMemFreeBSD->Core.u.Phys.PhysBase = Phys;
497	pMemFreeBSD->Core.u.Phys.uCachePolicy = uCachePolicy;
498	*ppMem = &pMemFreeBSD->Core;
499	return VINF_SUCCESS;
500	}
501
502
503	/**
504	* Worker locking the memory in either kernel or user maps.
505	*/
506	static int rtR0MemObjNativeLockInMap(PPRTR0MEMOBJINTERNAL ppMem, vm_map_t pVmMap,
507	vm_offset_t AddrStart, size_t cb, uint32_t fAccess,
508	RTR0PROCESS R0Process, int fFlags)
509	{
510	int rc;
511	NOREF(fAccess);
512
513	/* create the object. */
514	PRTR0MEMOBJFREEBSD pMemFreeBSD = (PRTR0MEMOBJFREEBSD)rtR0MemObjNew(sizeof(*pMemFreeBSD), RTR0MEMOBJTYPE_LOCK,
515	(void *)AddrStart, cb, NULL);
516	if (!pMemFreeBSD)
517	return VERR_NO_MEMORY;
518
519	/*
520	* We could've used vslock here, but we don't wish to be subject to
521	* resource usage restrictions, so we'll call vm_map_wire directly.
522	*/
523	rc = vm_map_wire(pVmMap, /* the map */
524	AddrStart, /* start */
525	AddrStart + cb, /* end */
526	fFlags); /* flags */
527	if (rc == KERN_SUCCESS)
528	{
529	pMemFreeBSD->Core.u.Lock.R0Process = R0Process;
530	*ppMem = &pMemFreeBSD->Core;
531	return VINF_SUCCESS;
532	}
533	rtR0MemObjDelete(&pMemFreeBSD->Core);
534	return VERR_NO_MEMORY;/** @todo fix mach -> vbox error conversion for freebsd. */
535	}
536
537
538	DECLHIDDEN(int) rtR0MemObjNativeLockUser(PPRTR0MEMOBJINTERNAL ppMem, RTR3PTR R3Ptr, size_t cb, uint32_t fAccess, RTR0PROCESS R0Process)
539	{
540	return rtR0MemObjNativeLockInMap(ppMem,
541	&((struct proc *)R0Process)->p_vmspace->vm_map,
542	(vm_offset_t)R3Ptr,
543	cb,
544	fAccess,
545	R0Process,
546	VM_MAP_WIRE_USER \| VM_MAP_WIRE_NOHOLES);
547	}
548
549
550	DECLHIDDEN(int) rtR0MemObjNativeLockKernel(PPRTR0MEMOBJINTERNAL ppMem, void *pv, size_t cb, uint32_t fAccess)
551	{
552	return rtR0MemObjNativeLockInMap(ppMem,
553	kernel_map,
554	(vm_offset_t)pv,
555	cb,
556	fAccess,
557	NIL_RTR0PROCESS,
558	VM_MAP_WIRE_SYSTEM \| VM_MAP_WIRE_NOHOLES);
559	}
560
561
562	/**
563	* Worker for the two virtual address space reservers.
564	*
565	* We're leaning on the examples provided by mmap and vm_mmap in vm_mmap.c here.
566	*/
567	static int rtR0MemObjNativeReserveInMap(PPRTR0MEMOBJINTERNAL ppMem, void *pvFixed, size_t cb, size_t uAlignment,
568	RTR0PROCESS R0Process, vm_map_t pMap, const char *pszTag)
569	{
570	int rc;
571
572	/*
573	* The pvFixed address range must be within the VM space when specified.
574	*/
575	if ( pvFixed != (void *)-1
576	&& ( (vm_offset_t)pvFixed < vm_map_min(pMap)
577	\|\| (vm_offset_t)pvFixed + cb > vm_map_max(pMap)))
578	return VERR_INVALID_PARAMETER;
579
580	/*
581	* Check that the specified alignment is supported.
582	*/
583	if (uAlignment > PAGE_SIZE)
584	return VERR_NOT_SUPPORTED;
585
586	/*
587	* Create the object.
588	*/
589	PRTR0MEMOBJFREEBSD pMemFreeBSD = (PRTR0MEMOBJFREEBSD)rtR0MemObjNew(sizeof(*pMemFreeBSD), RTR0MEMOBJTYPE_RES_VIRT,
590	NULL, cb, pszTag);
591	if (!pMemFreeBSD)
592	return VERR_NO_MEMORY;
593
594	vm_offset_t MapAddress = pvFixed != (void *)-1
595	? (vm_offset_t)pvFixed
596	: vm_map_min(pMap);
597	if (pvFixed != (void *)-1)
598	vm_map_remove(pMap,
599	MapAddress,
600	MapAddress + cb);
601
602	rc = vm_map_find(pMap, /* map */
603	NULL, /* object */
604	0, /* offset */
605	&MapAddress, /* addr (IN/OUT) */
606	cb, /* length */
607	#if __FreeBSD_version >= 1000055
608	0, /* max addr */
609	#endif
610	pvFixed == (void *)-1 ? VMFS_ANY_SPACE : VMFS_NO_SPACE,
611	/* find_space */
612	VM_PROT_NONE, /* protection */
613	VM_PROT_ALL, /* max(_prot) ?? */
614	0); /* cow (copy-on-write) */
615	if (rc == KERN_SUCCESS)
616	{
617	if (R0Process != NIL_RTR0PROCESS)
618	{
619	rc = vm_map_inherit(pMap,
620	MapAddress,
621	MapAddress + cb,
622	VM_INHERIT_SHARE);
623	AssertMsg(rc == KERN_SUCCESS, ("%#x\n", rc));
624	}
625	pMemFreeBSD->Core.pv = (void *)MapAddress;
626	pMemFreeBSD->Core.u.ResVirt.R0Process = R0Process;
627	*ppMem = &pMemFreeBSD->Core;
628	return VINF_SUCCESS;
629	}
630
631	rc = VERR_NO_MEMORY; /** @todo fix translation (borrow from darwin) */
632	rtR0MemObjDelete(&pMemFreeBSD->Core);
633	return rc;
634
635	}
636
637
638	DECLHIDDEN(int) rtR0MemObjNativeReserveKernel(PPRTR0MEMOBJINTERNAL ppMem, void *pvFixed, size_t cb, size_t uAlignment,
639	const char *pszTag)
640	{
641	return rtR0MemObjNativeReserveInMap(ppMem, pvFixed, cb, uAlignment, NIL_RTR0PROCESS, kernel_map, pszTag);
642	}
643
644
645	DECLHIDDEN(int) rtR0MemObjNativeReserveUser(PPRTR0MEMOBJINTERNAL ppMem, RTR3PTR R3PtrFixed, size_t cb, size_t uAlignment,
646	RTR0PROCESS R0Process, const char *pszTag)
647	{
648	return rtR0MemObjNativeReserveInMap(ppMem, (void *)R3PtrFixed, cb, uAlignment, R0Process,
649	&((struct proc *)R0Process)->p_vmspace->vm_map, pszTag);
650	}
651
652
653	DECLHIDDEN(int) rtR0MemObjNativeMapKernel(PPRTR0MEMOBJINTERNAL ppMem, RTR0MEMOBJ pMemToMap, void *pvFixed, size_t uAlignment,
654	unsigned fProt, size_t offSub, size_t cbSub, const char *pszTag)
655	{
656	// AssertMsgReturn(!offSub && !cbSub, ("%#x %#x\n", offSub, cbSub), VERR_NOT_SUPPORTED);
657	AssertMsgReturn(pvFixed == (void *)-1, ("%p\n", pvFixed), VERR_NOT_SUPPORTED);
658
659	/*
660	* Check that the specified alignment is supported.
661	*/
662	if (uAlignment > PAGE_SIZE)
663	return VERR_NOT_SUPPORTED;
664	Assert(!offSub \|\| cbSub);
665
666	int rc;
667	PRTR0MEMOBJFREEBSD pMemToMapFreeBSD = (PRTR0MEMOBJFREEBSD)pMemToMap;
668
669	/* calc protection */
670	vm_prot_t ProtectionFlags = 0;
671	if ((fProt & RTMEM_PROT_NONE) == RTMEM_PROT_NONE)
672	ProtectionFlags = VM_PROT_NONE;
673	if ((fProt & RTMEM_PROT_READ) == RTMEM_PROT_READ)
674	ProtectionFlags \|= VM_PROT_READ;
675	if ((fProt & RTMEM_PROT_WRITE) == RTMEM_PROT_WRITE)
676	ProtectionFlags \|= VM_PROT_WRITE;
677	if ((fProt & RTMEM_PROT_EXEC) == RTMEM_PROT_EXEC)
678	ProtectionFlags \|= VM_PROT_EXECUTE;
679
680	vm_offset_t Addr = vm_map_min(kernel_map);
681	if (cbSub == 0)
682	cbSub = pMemToMap->cb - offSub;
683
684	vm_object_reference(pMemToMapFreeBSD->pObject);
685	rc = vm_map_find(kernel_map, /* Map to insert the object in */
686	pMemToMapFreeBSD->pObject, /* Object to map */
687	offSub, /* Start offset in the object */
688	&Addr, /* Start address IN/OUT */
689	cbSub, /* Size of the mapping */
690	#if __FreeBSD_version >= 1000055
691	0, /* Upper bound of mapping */
692	#endif
693	VMFS_ANY_SPACE, /* Whether a suitable address should be searched for first */
694	ProtectionFlags, /* protection flags */
695	VM_PROT_ALL, /* Maximum protection flags */
696	0); /* copy-on-write and similar flags */
697
698	if (rc == KERN_SUCCESS)
699	{
700	rc = vm_map_wire(kernel_map, Addr, Addr + cbSub, VM_MAP_WIRE_SYSTEM \| VM_MAP_WIRE_NOHOLES);
701	AssertMsg(rc == KERN_SUCCESS, ("%#x\n", rc));
702
703	PRTR0MEMOBJFREEBSD pMemFreeBSD = (PRTR0MEMOBJFREEBSD)rtR0MemObjNew(sizeof(RTR0MEMOBJFREEBSD), RTR0MEMOBJTYPE_MAPPING,
704	(void *)Addr, cbSub, pszTag);
705	if (pMemFreeBSD)
706	{
707	Assert((vm_offset_t)pMemFreeBSD->Core.pv == Addr);
708	pMemFreeBSD->Core.u.Mapping.R0Process = NIL_RTR0PROCESS;
709	*ppMem = &pMemFreeBSD->Core;
710	return VINF_SUCCESS;
711	}
712	rc = vm_map_remove(kernel_map, Addr, Addr + cbSub);
713	AssertMsg(rc == KERN_SUCCESS, ("Deleting mapping failed\n"));
714	}
715	else
716	vm_object_deallocate(pMemToMapFreeBSD->pObject);
717
718	return VERR_NO_MEMORY;
719	}
720
721
722	DECLHIDDEN(int) rtR0MemObjNativeMapUser(PPRTR0MEMOBJINTERNAL ppMem, RTR0MEMOBJ pMemToMap, RTR3PTR R3PtrFixed, size_t uAlignment,
723	unsigned fProt, RTR0PROCESS R0Process, size_t offSub, size_t cbSub, const char *pszTag)
724	{
725	/*
726	* Check for unsupported stuff.
727	*/
728	AssertMsgReturn(R0Process == RTR0ProcHandleSelf(), ("%p != %p\n", R0Process, RTR0ProcHandleSelf()), VERR_NOT_SUPPORTED);
729	if (uAlignment > PAGE_SIZE)
730	return VERR_NOT_SUPPORTED;
731	Assert(!offSub \|\| cbSub);
732
733	int rc;
734	PRTR0MEMOBJFREEBSD pMemToMapFreeBSD = (PRTR0MEMOBJFREEBSD)pMemToMap;
735	struct proc pProc = (struct proc )R0Process;
736	struct vm_map *pProcMap = &pProc->p_vmspace->vm_map;
737
738	/* calc protection */
739	vm_prot_t ProtectionFlags = 0;
740	if ((fProt & RTMEM_PROT_NONE) == RTMEM_PROT_NONE)
741	ProtectionFlags = VM_PROT_NONE;
742	if ((fProt & RTMEM_PROT_READ) == RTMEM_PROT_READ)
743	ProtectionFlags \|= VM_PROT_READ;
744	if ((fProt & RTMEM_PROT_WRITE) == RTMEM_PROT_WRITE)
745	ProtectionFlags \|= VM_PROT_WRITE;
746	if ((fProt & RTMEM_PROT_EXEC) == RTMEM_PROT_EXEC)
747	ProtectionFlags \|= VM_PROT_EXECUTE;
748
749	/* calc mapping address */
750	vm_offset_t AddrR3;
751	if (R3PtrFixed == (RTR3PTR)-1)
752	{
753	/** @todo is this needed?. */
754	PROC_LOCK(pProc);
755	AddrR3 = round_page((vm_offset_t)pProc->p_vmspace->vm_daddr + MY_LIM_MAX_PROC(pProc, RLIMIT_DATA));
756	PROC_UNLOCK(pProc);
757	}
758	else
759	AddrR3 = (vm_offset_t)R3PtrFixed;
760
761	if (cbSub == 0)
762	cbSub = pMemToMap->cb - offSub;
763
764	/* Insert the pObject in the map. */
765	vm_object_reference(pMemToMapFreeBSD->pObject);
766	rc = vm_map_find(pProcMap, /* Map to insert the object in */
767	pMemToMapFreeBSD->pObject, /* Object to map */
768	offSub, /* Start offset in the object */
769	&AddrR3, /* Start address IN/OUT */
770	cbSub, /* Size of the mapping */
771	#if __FreeBSD_version >= 1000055
772	0, /* Upper bound of the mapping */
773	#endif
774	R3PtrFixed == (RTR3PTR)-1 ? VMFS_ANY_SPACE : VMFS_NO_SPACE,
775	/* Whether a suitable address should be searched for first */
776	ProtectionFlags, /* protection flags */
777	VM_PROT_ALL, /* Maximum protection flags */
778	0); /* copy-on-write and similar flags */
779
780	if (rc == KERN_SUCCESS)
781	{
782	rc = vm_map_wire(pProcMap, AddrR3, AddrR3 + pMemToMap->cb, VM_MAP_WIRE_USER\|VM_MAP_WIRE_NOHOLES);
783	AssertMsg(rc == KERN_SUCCESS, ("%#x\n", rc));
784
785	rc = vm_map_inherit(pProcMap, AddrR3, AddrR3 + pMemToMap->cb, VM_INHERIT_SHARE);
786	AssertMsg(rc == KERN_SUCCESS, ("%#x\n", rc));
787
788	/*
789	* Create a mapping object for it.
790	*/
791	PRTR0MEMOBJFREEBSD pMemFreeBSD = (PRTR0MEMOBJFREEBSD)rtR0MemObjNew(sizeof(RTR0MEMOBJFREEBSD), RTR0MEMOBJTYPE_MAPPING,
792	(void *)AddrR3, pMemToMap->cb, pszTag);
793	if (pMemFreeBSD)
794	{
795	Assert((vm_offset_t)pMemFreeBSD->Core.pv == AddrR3);
796	pMemFreeBSD->Core.u.Mapping.R0Process = R0Process;
797	*ppMem = &pMemFreeBSD->Core;
798	return VINF_SUCCESS;
799	}
800
801	rc = vm_map_remove(pProcMap, AddrR3, AddrR3 + pMemToMap->cb);
802	AssertMsg(rc == KERN_SUCCESS, ("Deleting mapping failed\n"));
803	}
804	else
805	vm_object_deallocate(pMemToMapFreeBSD->pObject);
806
807	return VERR_NO_MEMORY;
808	}
809
810
811	DECLHIDDEN(int) rtR0MemObjNativeProtect(PRTR0MEMOBJINTERNAL pMem, size_t offSub, size_t cbSub, uint32_t fProt)
812	{
813	vm_prot_t ProtectionFlags = 0;
814	vm_offset_t AddrStart = (uintptr_t)pMem->pv + offSub;
815	vm_offset_t AddrEnd = AddrStart + cbSub;
816	vm_map_t pVmMap = rtR0MemObjFreeBSDGetMap(pMem);
817
818	if (!pVmMap)
819	return VERR_NOT_SUPPORTED;
820
821	if ((fProt & RTMEM_PROT_NONE) == RTMEM_PROT_NONE)
822	ProtectionFlags = VM_PROT_NONE;
823	if ((fProt & RTMEM_PROT_READ) == RTMEM_PROT_READ)
824	ProtectionFlags \|= VM_PROT_READ;
825	if ((fProt & RTMEM_PROT_WRITE) == RTMEM_PROT_WRITE)
826	ProtectionFlags \|= VM_PROT_WRITE;
827	if ((fProt & RTMEM_PROT_EXEC) == RTMEM_PROT_EXEC)
828	ProtectionFlags \|= VM_PROT_EXECUTE;
829
830	int krc = vm_map_protect(pVmMap, AddrStart, AddrEnd, ProtectionFlags, FALSE);
831	if (krc == KERN_SUCCESS)
832	return VINF_SUCCESS;
833
834	return VERR_NOT_SUPPORTED;
835	}
836
837
838	DECLHIDDEN(RTHCPHYS) rtR0MemObjNativeGetPagePhysAddr(PRTR0MEMOBJINTERNAL pMem, size_t iPage)
839	{
840	PRTR0MEMOBJFREEBSD pMemFreeBSD = (PRTR0MEMOBJFREEBSD)pMem;
841
842	switch (pMemFreeBSD->Core.enmType)
843	{
844	case RTR0MEMOBJTYPE_LOCK:
845	{
846	if ( pMemFreeBSD->Core.u.Lock.R0Process != NIL_RTR0PROCESS
847	&& pMemFreeBSD->Core.u.Lock.R0Process != (RTR0PROCESS)curproc)
848	{
849	/* later */
850	return NIL_RTHCPHYS;
851	}
852
853	vm_offset_t pb = (vm_offset_t)pMemFreeBSD->Core.pv + ptoa(iPage);
854
855	struct proc pProc = (struct proc )pMemFreeBSD->Core.u.Lock.R0Process;
856	struct vm_map *pProcMap = &pProc->p_vmspace->vm_map;
857	pmap_t pPhysicalMap = vm_map_pmap(pProcMap);
858
859	return pmap_extract(pPhysicalMap, pb);
860	}
861
862	case RTR0MEMOBJTYPE_MAPPING:
863	{
864	vm_offset_t pb = (vm_offset_t)pMemFreeBSD->Core.pv + ptoa(iPage);
865
866	if (pMemFreeBSD->Core.u.Mapping.R0Process != NIL_RTR0PROCESS)
867	{
868	struct proc pProc = (struct proc )pMemFreeBSD->Core.u.Mapping.R0Process;
869	struct vm_map *pProcMap = &pProc->p_vmspace->vm_map;
870	pmap_t pPhysicalMap = vm_map_pmap(pProcMap);
871
872	return pmap_extract(pPhysicalMap, pb);
873	}
874	return vtophys(pb);
875	}
876
877	case RTR0MEMOBJTYPE_PAGE:
878	case RTR0MEMOBJTYPE_LOW:
879	case RTR0MEMOBJTYPE_PHYS_NC:
880	{
881	RTHCPHYS addr;
882
883	VM_OBJECT_WLOCK(pMemFreeBSD->pObject);
884	addr = VM_PAGE_TO_PHYS(vm_page_lookup(pMemFreeBSD->pObject, iPage));
885	VM_OBJECT_WUNLOCK(pMemFreeBSD->pObject);
886	return addr;
887	}
888
889	case RTR0MEMOBJTYPE_PHYS:
890	return pMemFreeBSD->Core.u.Cont.Phys + ptoa(iPage);
891
892	case RTR0MEMOBJTYPE_CONT:
893	return pMemFreeBSD->Core.u.Phys.PhysBase + ptoa(iPage);
894
895	case RTR0MEMOBJTYPE_RES_VIRT:
896	default:
897	return NIL_RTHCPHYS;
898	}
899	}
900

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source: vbox/trunk/src/VBox/Runtime/r0drv/freebsd/memobj-r0drv-freebsd.c@ 91481

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