memobj-r0drv-freebsd.c@ 82968

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1	/* $Id: memobj-r0drv-freebsd.c 82968 2020-02-04 10:35:17Z 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	DECLHIDDEN(int) rtR0MemObjNativeAllocPage(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, bool fExecutable)
363	{
364	PRTR0MEMOBJFREEBSD pMemFreeBSD = (PRTR0MEMOBJFREEBSD)rtR0MemObjNew(sizeof(*pMemFreeBSD),
365	RTR0MEMOBJTYPE_PAGE, NULL, cb);
366	if (!pMemFreeBSD)
367	return VERR_NO_MEMORY;
368
369	int rc = rtR0MemObjFreeBSDAllocHelper(pMemFreeBSD, fExecutable, ~(vm_paddr_t)0, false, VERR_NO_MEMORY);
370	if (RT_FAILURE(rc))
371	{
372	rtR0MemObjDelete(&pMemFreeBSD->Core);
373	return rc;
374	}
375
376	*ppMem = &pMemFreeBSD->Core;
377	return rc;
378	}
379
380
381	DECLHIDDEN(int) rtR0MemObjNativeAllocLow(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, bool fExecutable)
382	{
383	PRTR0MEMOBJFREEBSD pMemFreeBSD = (PRTR0MEMOBJFREEBSD)rtR0MemObjNew(sizeof(*pMemFreeBSD),
384	RTR0MEMOBJTYPE_LOW, NULL, cb);
385	if (!pMemFreeBSD)
386	return VERR_NO_MEMORY;
387
388	int rc = rtR0MemObjFreeBSDAllocHelper(pMemFreeBSD, fExecutable, _4G - 1, false, VERR_NO_LOW_MEMORY);
389	if (RT_FAILURE(rc))
390	{
391	rtR0MemObjDelete(&pMemFreeBSD->Core);
392	return rc;
393	}
394
395	*ppMem = &pMemFreeBSD->Core;
396	return rc;
397	}
398
399
400	DECLHIDDEN(int) rtR0MemObjNativeAllocCont(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, bool fExecutable)
401	{
402	PRTR0MEMOBJFREEBSD pMemFreeBSD = (PRTR0MEMOBJFREEBSD)rtR0MemObjNew(sizeof(*pMemFreeBSD),
403	RTR0MEMOBJTYPE_CONT, NULL, cb);
404	if (!pMemFreeBSD)
405	return VERR_NO_MEMORY;
406
407	int rc = rtR0MemObjFreeBSDAllocHelper(pMemFreeBSD, fExecutable, _4G - 1, true, VERR_NO_CONT_MEMORY);
408	if (RT_FAILURE(rc))
409	{
410	rtR0MemObjDelete(&pMemFreeBSD->Core);
411	return rc;
412	}
413
414	pMemFreeBSD->Core.u.Cont.Phys = vtophys(pMemFreeBSD->Core.pv);
415	*ppMem = &pMemFreeBSD->Core;
416	return rc;
417	}
418
419
420	static int rtR0MemObjFreeBSDAllocPhysPages(PPRTR0MEMOBJINTERNAL ppMem, RTR0MEMOBJTYPE enmType,
421	size_t cb,
422	RTHCPHYS PhysHighest, size_t uAlignment,
423	bool fContiguous, int rcNoMem)
424	{
425	uint32_t cPages = atop(cb);
426	vm_paddr_t VmPhysAddrHigh;
427
428	/* create the object. */
429	PRTR0MEMOBJFREEBSD pMemFreeBSD = (PRTR0MEMOBJFREEBSD)rtR0MemObjNew(sizeof(*pMemFreeBSD),
430	enmType, NULL, cb);
431	if (!pMemFreeBSD)
432	return VERR_NO_MEMORY;
433
434	pMemFreeBSD->pObject = vm_object_allocate(OBJT_PHYS, atop(cb));
435
436	if (PhysHighest != NIL_RTHCPHYS)
437	VmPhysAddrHigh = PhysHighest;
438	else
439	VmPhysAddrHigh = ~(vm_paddr_t)0;
440
441	int rc = rtR0MemObjFreeBSDPhysAllocHelper(pMemFreeBSD->pObject, cPages, VmPhysAddrHigh,
442	uAlignment, fContiguous, true, rcNoMem);
443	if (RT_SUCCESS(rc))
444	{
445	if (fContiguous)
446	{
447	Assert(enmType == RTR0MEMOBJTYPE_PHYS);
448	VM_OBJECT_WLOCK(pMemFreeBSD->pObject);
449	pMemFreeBSD->Core.u.Phys.PhysBase = VM_PAGE_TO_PHYS(vm_page_find_least(pMemFreeBSD->pObject, 0));
450	VM_OBJECT_WUNLOCK(pMemFreeBSD->pObject);
451	pMemFreeBSD->Core.u.Phys.fAllocated = true;
452	}
453
454	*ppMem = &pMemFreeBSD->Core;
455	}
456	else
457	{
458	vm_object_deallocate(pMemFreeBSD->pObject);
459	rtR0MemObjDelete(&pMemFreeBSD->Core);
460	}
461
462	return rc;
463	}
464
465
466	DECLHIDDEN(int) rtR0MemObjNativeAllocPhys(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, RTHCPHYS PhysHighest, size_t uAlignment)
467	{
468	return rtR0MemObjFreeBSDAllocPhysPages(ppMem, RTR0MEMOBJTYPE_PHYS, cb, PhysHighest, uAlignment, true, VERR_NO_MEMORY);
469	}
470
471
472	DECLHIDDEN(int) rtR0MemObjNativeAllocPhysNC(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, RTHCPHYS PhysHighest)
473	{
474	return rtR0MemObjFreeBSDAllocPhysPages(ppMem, RTR0MEMOBJTYPE_PHYS_NC, cb, PhysHighest, PAGE_SIZE, false, VERR_NO_PHYS_MEMORY);
475	}
476
477
478	DECLHIDDEN(int) rtR0MemObjNativeEnterPhys(PPRTR0MEMOBJINTERNAL ppMem, RTHCPHYS Phys, size_t cb, uint32_t uCachePolicy)
479	{
480	AssertReturn(uCachePolicy == RTMEM_CACHE_POLICY_DONT_CARE, VERR_NOT_SUPPORTED);
481
482	/* create the object. */
483	PRTR0MEMOBJFREEBSD pMemFreeBSD = (PRTR0MEMOBJFREEBSD)rtR0MemObjNew(sizeof(*pMemFreeBSD), RTR0MEMOBJTYPE_PHYS, NULL, cb);
484	if (!pMemFreeBSD)
485	return VERR_NO_MEMORY;
486
487	/* there is no allocation here, it needs to be mapped somewhere first. */
488	pMemFreeBSD->Core.u.Phys.fAllocated = false;
489	pMemFreeBSD->Core.u.Phys.PhysBase = Phys;
490	pMemFreeBSD->Core.u.Phys.uCachePolicy = uCachePolicy;
491	*ppMem = &pMemFreeBSD->Core;
492	return VINF_SUCCESS;
493	}
494
495
496	/**
497	* Worker locking the memory in either kernel or user maps.
498	*/
499	static int rtR0MemObjNativeLockInMap(PPRTR0MEMOBJINTERNAL ppMem, vm_map_t pVmMap,
500	vm_offset_t AddrStart, size_t cb, uint32_t fAccess,
501	RTR0PROCESS R0Process, int fFlags)
502	{
503	int rc;
504	NOREF(fAccess);
505
506	/* create the object. */
507	PRTR0MEMOBJFREEBSD pMemFreeBSD = (PRTR0MEMOBJFREEBSD)rtR0MemObjNew(sizeof(pMemFreeBSD), RTR0MEMOBJTYPE_LOCK, (void )AddrStart, cb);
508	if (!pMemFreeBSD)
509	return VERR_NO_MEMORY;
510
511	/*
512	* We could've used vslock here, but we don't wish to be subject to
513	* resource usage restrictions, so we'll call vm_map_wire directly.
514	*/
515	rc = vm_map_wire(pVmMap, /* the map */
516	AddrStart, /* start */
517	AddrStart + cb, /* end */
518	fFlags); /* flags */
519	if (rc == KERN_SUCCESS)
520	{
521	pMemFreeBSD->Core.u.Lock.R0Process = R0Process;
522	*ppMem = &pMemFreeBSD->Core;
523	return VINF_SUCCESS;
524	}
525	rtR0MemObjDelete(&pMemFreeBSD->Core);
526	return VERR_NO_MEMORY;/** @todo fix mach -> vbox error conversion for freebsd. */
527	}
528
529
530	DECLHIDDEN(int) rtR0MemObjNativeLockUser(PPRTR0MEMOBJINTERNAL ppMem, RTR3PTR R3Ptr, size_t cb, uint32_t fAccess, RTR0PROCESS R0Process)
531	{
532	return rtR0MemObjNativeLockInMap(ppMem,
533	&((struct proc *)R0Process)->p_vmspace->vm_map,
534	(vm_offset_t)R3Ptr,
535	cb,
536	fAccess,
537	R0Process,
538	VM_MAP_WIRE_USER \| VM_MAP_WIRE_NOHOLES);
539	}
540
541
542	DECLHIDDEN(int) rtR0MemObjNativeLockKernel(PPRTR0MEMOBJINTERNAL ppMem, void *pv, size_t cb, uint32_t fAccess)
543	{
544	return rtR0MemObjNativeLockInMap(ppMem,
545	kernel_map,
546	(vm_offset_t)pv,
547	cb,
548	fAccess,
549	NIL_RTR0PROCESS,
550	VM_MAP_WIRE_SYSTEM \| VM_MAP_WIRE_NOHOLES);
551	}
552
553
554	/**
555	* Worker for the two virtual address space reservers.
556	*
557	* We're leaning on the examples provided by mmap and vm_mmap in vm_mmap.c here.
558	*/
559	static int rtR0MemObjNativeReserveInMap(PPRTR0MEMOBJINTERNAL ppMem, void *pvFixed, size_t cb, size_t uAlignment, RTR0PROCESS R0Process, vm_map_t pMap)
560	{
561	int rc;
562
563	/*
564	* The pvFixed address range must be within the VM space when specified.
565	*/
566	if ( pvFixed != (void *)-1
567	&& ( (vm_offset_t)pvFixed < vm_map_min(pMap)
568	\|\| (vm_offset_t)pvFixed + cb > vm_map_max(pMap)))
569	return VERR_INVALID_PARAMETER;
570
571	/*
572	* Check that the specified alignment is supported.
573	*/
574	if (uAlignment > PAGE_SIZE)
575	return VERR_NOT_SUPPORTED;
576
577	/*
578	* Create the object.
579	*/
580	PRTR0MEMOBJFREEBSD pMemFreeBSD = (PRTR0MEMOBJFREEBSD)rtR0MemObjNew(sizeof(*pMemFreeBSD), RTR0MEMOBJTYPE_RES_VIRT, NULL, cb);
581	if (!pMemFreeBSD)
582	return VERR_NO_MEMORY;
583
584	vm_offset_t MapAddress = pvFixed != (void *)-1
585	? (vm_offset_t)pvFixed
586	: vm_map_min(pMap);
587	if (pvFixed != (void *)-1)
588	vm_map_remove(pMap,
589	MapAddress,
590	MapAddress + cb);
591
592	rc = vm_map_find(pMap, /* map */
593	NULL, /* object */
594	0, /* offset */
595	&MapAddress, /* addr (IN/OUT) */
596	cb, /* length */
597	#if __FreeBSD_version >= 1000055
598	0, /* max addr */
599	#endif
600	pvFixed == (void *)-1 ? VMFS_ANY_SPACE : VMFS_NO_SPACE,
601	/* find_space */
602	VM_PROT_NONE, /* protection */
603	VM_PROT_ALL, /* max(_prot) ?? */
604	0); /* cow (copy-on-write) */
605	if (rc == KERN_SUCCESS)
606	{
607	if (R0Process != NIL_RTR0PROCESS)
608	{
609	rc = vm_map_inherit(pMap,
610	MapAddress,
611	MapAddress + cb,
612	VM_INHERIT_SHARE);
613	AssertMsg(rc == KERN_SUCCESS, ("%#x\n", rc));
614	}
615	pMemFreeBSD->Core.pv = (void *)MapAddress;
616	pMemFreeBSD->Core.u.ResVirt.R0Process = R0Process;
617	*ppMem = &pMemFreeBSD->Core;
618	return VINF_SUCCESS;
619	}
620
621	rc = VERR_NO_MEMORY; /** @todo fix translation (borrow from darwin) */
622	rtR0MemObjDelete(&pMemFreeBSD->Core);
623	return rc;
624
625	}
626
627
628	DECLHIDDEN(int) rtR0MemObjNativeReserveKernel(PPRTR0MEMOBJINTERNAL ppMem, void *pvFixed, size_t cb, size_t uAlignment)
629	{
630	return rtR0MemObjNativeReserveInMap(ppMem, pvFixed, cb, uAlignment, NIL_RTR0PROCESS, kernel_map);
631	}
632
633
634	DECLHIDDEN(int) rtR0MemObjNativeReserveUser(PPRTR0MEMOBJINTERNAL ppMem, RTR3PTR R3PtrFixed, size_t cb, size_t uAlignment, RTR0PROCESS R0Process)
635	{
636	return rtR0MemObjNativeReserveInMap(ppMem, (void *)R3PtrFixed, cb, uAlignment, R0Process,
637	&((struct proc *)R0Process)->p_vmspace->vm_map);
638	}
639
640
641	DECLHIDDEN(int) rtR0MemObjNativeMapKernel(PPRTR0MEMOBJINTERNAL ppMem, RTR0MEMOBJ pMemToMap, void *pvFixed, size_t uAlignment,
642	unsigned fProt, size_t offSub, size_t cbSub)
643	{
644	// AssertMsgReturn(!offSub && !cbSub, ("%#x %#x\n", offSub, cbSub), VERR_NOT_SUPPORTED);
645	AssertMsgReturn(pvFixed == (void *)-1, ("%p\n", pvFixed), VERR_NOT_SUPPORTED);
646
647	/*
648	* Check that the specified alignment is supported.
649	*/
650	if (uAlignment > PAGE_SIZE)
651	return VERR_NOT_SUPPORTED;
652	Assert(!offSub \|\| cbSub);
653
654	int rc;
655	PRTR0MEMOBJFREEBSD pMemToMapFreeBSD = (PRTR0MEMOBJFREEBSD)pMemToMap;
656
657	/* calc protection */
658	vm_prot_t ProtectionFlags = 0;
659	if ((fProt & RTMEM_PROT_NONE) == RTMEM_PROT_NONE)
660	ProtectionFlags = VM_PROT_NONE;
661	if ((fProt & RTMEM_PROT_READ) == RTMEM_PROT_READ)
662	ProtectionFlags \|= VM_PROT_READ;
663	if ((fProt & RTMEM_PROT_WRITE) == RTMEM_PROT_WRITE)
664	ProtectionFlags \|= VM_PROT_WRITE;
665	if ((fProt & RTMEM_PROT_EXEC) == RTMEM_PROT_EXEC)
666	ProtectionFlags \|= VM_PROT_EXECUTE;
667
668	vm_offset_t Addr = vm_map_min(kernel_map);
669	if (cbSub == 0)
670	cbSub = pMemToMap->cb - offSub;
671
672	vm_object_reference(pMemToMapFreeBSD->pObject);
673	rc = vm_map_find(kernel_map, /* Map to insert the object in */
674	pMemToMapFreeBSD->pObject, /* Object to map */
675	offSub, /* Start offset in the object */
676	&Addr, /* Start address IN/OUT */
677	cbSub, /* Size of the mapping */
678	#if __FreeBSD_version >= 1000055
679	0, /* Upper bound of mapping */
680	#endif
681	VMFS_ANY_SPACE, /* Whether a suitable address should be searched for first */
682	ProtectionFlags, /* protection flags */
683	VM_PROT_ALL, /* Maximum protection flags */
684	0); /* copy-on-write and similar flags */
685
686	if (rc == KERN_SUCCESS)
687	{
688	rc = vm_map_wire(kernel_map, Addr, Addr + cbSub, VM_MAP_WIRE_SYSTEM\|VM_MAP_WIRE_NOHOLES);
689	AssertMsg(rc == KERN_SUCCESS, ("%#x\n", rc));
690
691	PRTR0MEMOBJFREEBSD pMemFreeBSD = (PRTR0MEMOBJFREEBSD)rtR0MemObjNew(sizeof(RTR0MEMOBJFREEBSD),
692	RTR0MEMOBJTYPE_MAPPING,
693	(void *)Addr,
694	cbSub);
695	if (pMemFreeBSD)
696	{
697	Assert((vm_offset_t)pMemFreeBSD->Core.pv == Addr);
698	pMemFreeBSD->Core.u.Mapping.R0Process = NIL_RTR0PROCESS;
699	*ppMem = &pMemFreeBSD->Core;
700	return VINF_SUCCESS;
701	}
702	rc = vm_map_remove(kernel_map, Addr, Addr + cbSub);
703	AssertMsg(rc == KERN_SUCCESS, ("Deleting mapping failed\n"));
704	}
705	else
706	vm_object_deallocate(pMemToMapFreeBSD->pObject);
707
708	return VERR_NO_MEMORY;
709	}
710
711
712	DECLHIDDEN(int) rtR0MemObjNativeMapUser(PPRTR0MEMOBJINTERNAL ppMem, RTR0MEMOBJ pMemToMap, RTR3PTR R3PtrFixed, size_t uAlignment,
713	unsigned fProt, RTR0PROCESS R0Process, size_t offSub, size_t cbSub)
714	{
715	/*
716	* Check for unsupported stuff.
717	*/
718	AssertMsgReturn(R0Process == RTR0ProcHandleSelf(), ("%p != %p\n", R0Process, RTR0ProcHandleSelf()), VERR_NOT_SUPPORTED);
719	if (uAlignment > PAGE_SIZE)
720	return VERR_NOT_SUPPORTED;
721	Assert(!offSub \|\| cbSub);
722
723	int rc;
724	PRTR0MEMOBJFREEBSD pMemToMapFreeBSD = (PRTR0MEMOBJFREEBSD)pMemToMap;
725	struct proc pProc = (struct proc )R0Process;
726	struct vm_map *pProcMap = &pProc->p_vmspace->vm_map;
727
728	/* calc protection */
729	vm_prot_t ProtectionFlags = 0;
730	if ((fProt & RTMEM_PROT_NONE) == RTMEM_PROT_NONE)
731	ProtectionFlags = VM_PROT_NONE;
732	if ((fProt & RTMEM_PROT_READ) == RTMEM_PROT_READ)
733	ProtectionFlags \|= VM_PROT_READ;
734	if ((fProt & RTMEM_PROT_WRITE) == RTMEM_PROT_WRITE)
735	ProtectionFlags \|= VM_PROT_WRITE;
736	if ((fProt & RTMEM_PROT_EXEC) == RTMEM_PROT_EXEC)
737	ProtectionFlags \|= VM_PROT_EXECUTE;
738
739	/* calc mapping address */
740	vm_offset_t AddrR3;
741	if (R3PtrFixed == (RTR3PTR)-1)
742	{
743	/** @todo is this needed?. */
744	PROC_LOCK(pProc);
745	AddrR3 = round_page((vm_offset_t)pProc->p_vmspace->vm_daddr + MY_LIM_MAX_PROC(pProc, RLIMIT_DATA));
746	PROC_UNLOCK(pProc);
747	}
748	else
749	AddrR3 = (vm_offset_t)R3PtrFixed;
750
751	if (cbSub == 0)
752	cbSub = pMemToMap->cb - offSub;
753
754	/* Insert the pObject in the map. */
755	vm_object_reference(pMemToMapFreeBSD->pObject);
756	rc = vm_map_find(pProcMap, /* Map to insert the object in */
757	pMemToMapFreeBSD->pObject, /* Object to map */
758	offSub, /* Start offset in the object */
759	&AddrR3, /* Start address IN/OUT */
760	cbSub, /* Size of the mapping */
761	#if __FreeBSD_version >= 1000055
762	0, /* Upper bound of the mapping */
763	#endif
764	R3PtrFixed == (RTR3PTR)-1 ? VMFS_ANY_SPACE : VMFS_NO_SPACE,
765	/* Whether a suitable address should be searched for first */
766	ProtectionFlags, /* protection flags */
767	VM_PROT_ALL, /* Maximum protection flags */
768	0); /* copy-on-write and similar flags */
769
770	if (rc == KERN_SUCCESS)
771	{
772	rc = vm_map_wire(pProcMap, AddrR3, AddrR3 + pMemToMap->cb, VM_MAP_WIRE_USER\|VM_MAP_WIRE_NOHOLES);
773	AssertMsg(rc == KERN_SUCCESS, ("%#x\n", rc));
774
775	rc = vm_map_inherit(pProcMap, AddrR3, AddrR3 + pMemToMap->cb, VM_INHERIT_SHARE);
776	AssertMsg(rc == KERN_SUCCESS, ("%#x\n", rc));
777
778	/*
779	* Create a mapping object for it.
780	*/
781	PRTR0MEMOBJFREEBSD pMemFreeBSD = (PRTR0MEMOBJFREEBSD)rtR0MemObjNew(sizeof(RTR0MEMOBJFREEBSD),
782	RTR0MEMOBJTYPE_MAPPING,
783	(void *)AddrR3,
784	pMemToMap->cb);
785	if (pMemFreeBSD)
786	{
787	Assert((vm_offset_t)pMemFreeBSD->Core.pv == AddrR3);
788	pMemFreeBSD->Core.u.Mapping.R0Process = R0Process;
789	*ppMem = &pMemFreeBSD->Core;
790	return VINF_SUCCESS;
791	}
792
793	rc = vm_map_remove(pProcMap, AddrR3, AddrR3 + pMemToMap->cb);
794	AssertMsg(rc == KERN_SUCCESS, ("Deleting mapping failed\n"));
795	}
796	else
797	vm_object_deallocate(pMemToMapFreeBSD->pObject);
798
799	return VERR_NO_MEMORY;
800	}
801
802
803	DECLHIDDEN(int) rtR0MemObjNativeProtect(PRTR0MEMOBJINTERNAL pMem, size_t offSub, size_t cbSub, uint32_t fProt)
804	{
805	vm_prot_t ProtectionFlags = 0;
806	vm_offset_t AddrStart = (uintptr_t)pMem->pv + offSub;
807	vm_offset_t AddrEnd = AddrStart + cbSub;
808	vm_map_t pVmMap = rtR0MemObjFreeBSDGetMap(pMem);
809
810	if (!pVmMap)
811	return VERR_NOT_SUPPORTED;
812
813	if ((fProt & RTMEM_PROT_NONE) == RTMEM_PROT_NONE)
814	ProtectionFlags = VM_PROT_NONE;
815	if ((fProt & RTMEM_PROT_READ) == RTMEM_PROT_READ)
816	ProtectionFlags \|= VM_PROT_READ;
817	if ((fProt & RTMEM_PROT_WRITE) == RTMEM_PROT_WRITE)
818	ProtectionFlags \|= VM_PROT_WRITE;
819	if ((fProt & RTMEM_PROT_EXEC) == RTMEM_PROT_EXEC)
820	ProtectionFlags \|= VM_PROT_EXECUTE;
821
822	int krc = vm_map_protect(pVmMap, AddrStart, AddrEnd, ProtectionFlags, FALSE);
823	if (krc == KERN_SUCCESS)
824	return VINF_SUCCESS;
825
826	return VERR_NOT_SUPPORTED;
827	}
828
829
830	DECLHIDDEN(RTHCPHYS) rtR0MemObjNativeGetPagePhysAddr(PRTR0MEMOBJINTERNAL pMem, size_t iPage)
831	{
832	PRTR0MEMOBJFREEBSD pMemFreeBSD = (PRTR0MEMOBJFREEBSD)pMem;
833
834	switch (pMemFreeBSD->Core.enmType)
835	{
836	case RTR0MEMOBJTYPE_LOCK:
837	{
838	if ( pMemFreeBSD->Core.u.Lock.R0Process != NIL_RTR0PROCESS
839	&& pMemFreeBSD->Core.u.Lock.R0Process != (RTR0PROCESS)curproc)
840	{
841	/* later */
842	return NIL_RTHCPHYS;
843	}
844
845	vm_offset_t pb = (vm_offset_t)pMemFreeBSD->Core.pv + ptoa(iPage);
846
847	struct proc pProc = (struct proc )pMemFreeBSD->Core.u.Lock.R0Process;
848	struct vm_map *pProcMap = &pProc->p_vmspace->vm_map;
849	pmap_t pPhysicalMap = vm_map_pmap(pProcMap);
850
851	return pmap_extract(pPhysicalMap, pb);
852	}
853
854	case RTR0MEMOBJTYPE_MAPPING:
855	{
856	vm_offset_t pb = (vm_offset_t)pMemFreeBSD->Core.pv + ptoa(iPage);
857
858	if (pMemFreeBSD->Core.u.Mapping.R0Process != NIL_RTR0PROCESS)
859	{
860	struct proc pProc = (struct proc )pMemFreeBSD->Core.u.Mapping.R0Process;
861	struct vm_map *pProcMap = &pProc->p_vmspace->vm_map;
862	pmap_t pPhysicalMap = vm_map_pmap(pProcMap);
863
864	return pmap_extract(pPhysicalMap, pb);
865	}
866	return vtophys(pb);
867	}
868
869	case RTR0MEMOBJTYPE_PAGE:
870	case RTR0MEMOBJTYPE_LOW:
871	case RTR0MEMOBJTYPE_PHYS_NC:
872	{
873	RTHCPHYS addr;
874
875	VM_OBJECT_WLOCK(pMemFreeBSD->pObject);
876	addr = VM_PAGE_TO_PHYS(vm_page_lookup(pMemFreeBSD->pObject, iPage));
877	VM_OBJECT_WUNLOCK(pMemFreeBSD->pObject);
878	return addr;
879	}
880
881	case RTR0MEMOBJTYPE_PHYS:
882	return pMemFreeBSD->Core.u.Cont.Phys + ptoa(iPage);
883
884	case RTR0MEMOBJTYPE_CONT:
885	return pMemFreeBSD->Core.u.Phys.PhysBase + ptoa(iPage);
886
887	case RTR0MEMOBJTYPE_RES_VIRT:
888	default:
889	return NIL_RTHCPHYS;
890	}
891	}
892

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source: vbox/trunk/src/VBox/Runtime/r0drv/freebsd/memobj-r0drv-freebsd.c@ 82968

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