memobj-r0drv-netbsd.c@ 91446

Last change on this file since 91446 was 91446, checked in by vboxsync, 4 years ago
IPRT/memobj: Adding RTR0MemObjAllocLarge for speeding up large page allocations. bugref:5324
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1	/* $Id: memobj-r0drv-netbsd.c 91446 2021-09-28 19:53:25Z vboxsync $ */
2	/** @file
3	* IPRT - Ring-0 Memory Objects, NetBSD.
4	*/
5
6	/*
7	* Contributed by knut st. osmundsen, Andriy Gapon, Arto Huusko.
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	* Copyright (c) 2007 knut st. osmundsen <bird-src-spam@anduin.net>
30	* Copyright (c) 2011 Andriy Gapon <avg@FreeBSD.org>
31	* Copyright (c) 2014 Arto Huusko
32	*
33	* Permission is hereby granted, free of charge, to any person
34	* obtaining a copy of this software and associated documentation
35	* files (the "Software"), to deal in the Software without
36	* restriction, including without limitation the rights to use,
37	* copy, modify, merge, publish, distribute, sublicense, and/or sell
38	* copies of the Software, and to permit persons to whom the
39	* Software is furnished to do so, subject to the following
40	* conditions:
41	*
42	* The above copyright notice and this permission notice shall be
43	* included in all copies or substantial portions of the Software.
44	*
45	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
46	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
47	* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
48	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
49	* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
50	* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
51	* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
52	* OTHER DEALINGS IN THE SOFTWARE.
53	*/
54
55
56	/*********************************************************************************************************************************
57	* Header Files *
58	*********************************************************************************************************************************/
59	#include "the-netbsd-kernel.h"
60
61	#include <iprt/memobj.h>
62	#include <iprt/mem.h>
63	#include <iprt/err.h>
64	#include <iprt/assert.h>
65	#include <iprt/log.h>
66	#include <iprt/param.h>
67	#include <iprt/process.h>
68	#include "internal/memobj.h"
69
70
71	/*********************************************************************************************************************************
72	* Structures and Typedefs *
73	*********************************************************************************************************************************/
74	/**
75	* The NetBSD version of the memory object structure.
76	*/
77	typedef struct RTR0MEMOBJNETBSD
78	{
79	/** The core structure. */
80	RTR0MEMOBJINTERNAL Core;
81	size_t size;
82	struct pglist pglist;
83	} RTR0MEMOBJNETBSD, *PRTR0MEMOBJNETBSD;
84
85
86	typedef struct vm_map* vm_map_t;
87
88	/**
89	* Gets the virtual memory map the specified object is mapped into.
90	*
91	* @returns VM map handle on success, NULL if no map.
92	* @param pMem The memory object.
93	*/
94	static vm_map_t rtR0MemObjNetBSDGetMap(PRTR0MEMOBJINTERNAL pMem)
95	{
96	switch (pMem->enmType)
97	{
98	case RTR0MEMOBJTYPE_PAGE:
99	case RTR0MEMOBJTYPE_LOW:
100	case RTR0MEMOBJTYPE_CONT:
101	return kernel_map;
102
103	case RTR0MEMOBJTYPE_PHYS:
104	case RTR0MEMOBJTYPE_PHYS_NC:
105	return NULL; /* pretend these have no mapping atm. */
106
107	case RTR0MEMOBJTYPE_LOCK:
108	return pMem->u.Lock.R0Process == NIL_RTR0PROCESS
109	? kernel_map
110	: &((struct proc *)pMem->u.Lock.R0Process)->p_vmspace->vm_map;
111
112	case RTR0MEMOBJTYPE_RES_VIRT:
113	return pMem->u.ResVirt.R0Process == NIL_RTR0PROCESS
114	? kernel_map
115	: &((struct proc *)pMem->u.ResVirt.R0Process)->p_vmspace->vm_map;
116
117	case RTR0MEMOBJTYPE_MAPPING:
118	return pMem->u.Mapping.R0Process == NIL_RTR0PROCESS
119	? kernel_map
120	: &((struct proc *)pMem->u.Mapping.R0Process)->p_vmspace->vm_map;
121
122	default:
123	return NULL;
124	}
125	}
126
127
128	DECLHIDDEN(int) rtR0MemObjNativeFree(RTR0MEMOBJ pMem)
129	{
130	PRTR0MEMOBJNETBSD pMemNetBSD = (PRTR0MEMOBJNETBSD)pMem;
131	int rc;
132
133	switch (pMemNetBSD->Core.enmType)
134	{
135	case RTR0MEMOBJTYPE_PAGE:
136	{
137	kmem_free(pMemNetBSD->Core.pv, pMemNetBSD->Core.cb);
138	break;
139	}
140	case RTR0MEMOBJTYPE_LOW:
141	case RTR0MEMOBJTYPE_CONT:
142	{
143	/* Unmap */
144	pmap_kremove((vaddr_t)pMemNetBSD->Core.pv, pMemNetBSD->Core.cb);
145	/* Free the virtual space */
146	uvm_km_free(kernel_map, (vaddr_t)pMemNetBSD->Core.pv, pMemNetBSD->Core.cb, UVM_KMF_VAONLY);
147	/* Free the physical pages */
148	uvm_pglistfree(&pMemNetBSD->pglist);
149	break;
150	}
151	case RTR0MEMOBJTYPE_PHYS:
152	case RTR0MEMOBJTYPE_PHYS_NC:
153	{
154	/* Free the physical pages */
155	uvm_pglistfree(&pMemNetBSD->pglist);
156	break;
157	}
158	case RTR0MEMOBJTYPE_LOCK:
159	if (pMemNetBSD->Core.u.Lock.R0Process != NIL_RTR0PROCESS)
160	{
161	uvm_map_pageable(
162	&((struct proc *)pMemNetBSD->Core.u.Lock.R0Process)->p_vmspace->vm_map,
163	(vaddr_t)pMemNetBSD->Core.pv,
164	((vaddr_t)pMemNetBSD->Core.pv) + pMemNetBSD->Core.cb,
165	1, 0);
166	}
167	break;
168	case RTR0MEMOBJTYPE_RES_VIRT:
169	if (pMemNetBSD->Core.u.Lock.R0Process == NIL_RTR0PROCESS)
170	{
171	uvm_km_free(kernel_map, (vaddr_t)pMemNetBSD->Core.pv, pMemNetBSD->Core.cb, UVM_KMF_VAONLY);
172	}
173	break;
174	case RTR0MEMOBJTYPE_MAPPING:
175	if (pMemNetBSD->Core.u.Lock.R0Process == NIL_RTR0PROCESS)
176	{
177	pmap_kremove((vaddr_t)pMemNetBSD->Core.pv, pMemNetBSD->Core.cb);
178	uvm_km_free(kernel_map, (vaddr_t)pMemNetBSD->Core.pv, pMemNetBSD->Core.cb, UVM_KMF_VAONLY);
179	}
180	break;
181
182	default:
183	AssertMsgFailed(("enmType=%d\n", pMemNetBSD->Core.enmType));
184	return VERR_INTERNAL_ERROR;
185	}
186
187	return VINF_SUCCESS;
188	}
189
190	static int rtR0MemObjNetBSDAllocHelper(PRTR0MEMOBJNETBSD pMemNetBSD, size_t cb, bool fExecutable,
191	paddr_t VmPhysAddrHigh, bool fContiguous)
192	{
193	/* Virtual space first */
194	vaddr_t virt = uvm_km_alloc(kernel_map, cb, 0,
195	UVM_KMF_VAONLY \| UVM_KMF_WAITVA \| UVM_KMF_CANFAIL);
196	if (virt == 0)
197	return VERR_NO_MEMORY;
198
199	struct pglist *rlist = &pMemNetBSD->pglist;
200
201	int nsegs = fContiguous ? 1 : INT_MAX;
202
203	/* Physical pages */
204	if (uvm_pglistalloc(cb, 0, VmPhysAddrHigh,
205	PAGE_SIZE, 0, rlist, nsegs, 1) != 0)
206	{
207	uvm_km_free(kernel_map, virt, cb, UVM_KMF_VAONLY);
208	return VERR_NO_MEMORY;
209	}
210
211	/* Map */
212	struct vm_page *page;
213	vm_prot_t prot = VM_PROT_READ \| VM_PROT_WRITE;
214	if (fExecutable)
215	prot \|= VM_PROT_EXECUTE;
216	vaddr_t virt2 = virt;
217	TAILQ_FOREACH(page, rlist, pageq.queue)
218	{
219	pmap_kenter_pa(virt2, VM_PAGE_TO_PHYS(page), prot, 0);
220	virt2 += PAGE_SIZE;
221	}
222
223	pMemNetBSD->Core.pv = (void *)virt;
224	if (fContiguous)
225	{
226	page = TAILQ_FIRST(rlist);
227	pMemNetBSD->Core.u.Cont.Phys = VM_PAGE_TO_PHYS(page);
228	}
229	return VINF_SUCCESS;
230	}
231
232
233	DECLHIDDEN(int) rtR0MemObjNativeAllocPage(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, bool fExecutable)
234	{
235	PRTR0MEMOBJNETBSD pMemNetBSD = (PRTR0MEMOBJNETBSD)rtR0MemObjNew(sizeof(*pMemNetBSD),
236	RTR0MEMOBJTYPE_PAGE, NULL, cb);
237	if (!pMemNetBSD)
238	return VERR_NO_MEMORY;
239
240	void *pvMem = kmem_alloc(cb, KM_SLEEP);
241	if (RT_UNLIKELY(!pvMem))
242	{
243	rtR0MemObjDelete(&pMemNetBSD->Core);
244	return VERR_NO_PAGE_MEMORY;
245	}
246	if (fExecutable)
247	{
248	pmap_protect(pmap_kernel(), (vaddr_t)pvMem, ((vaddr_t)pvMem) + cb,
249	VM_PROT_READ \| VM_PROT_WRITE \| VM_PROT_EXECUTE);
250	}
251
252	pMemNetBSD->Core.pv = pvMem;
253	*ppMem = &pMemNetBSD->Core;
254	return VINF_SUCCESS;
255	}
256
257
258	DECLHIDDEN(int) rtR0MemObjNativeAllocLarge(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, size_t cbLargePage, uint32_t fFlags,
259	const char *pszTag)
260	{
261	return rtR0MemObjFallbackAllocLarge(ppMem, cb, cbLargePage, fFlags, pszTag);
262	}
263
264
265	DECLHIDDEN(int) rtR0MemObjNativeAllocLow(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, bool fExecutable)
266	{
267	PRTR0MEMOBJNETBSD pMemNetBSD = (PRTR0MEMOBJNETBSD)rtR0MemObjNew(sizeof(*pMemNetBSD),
268	RTR0MEMOBJTYPE_LOW, NULL, cb);
269	if (!pMemNetBSD)
270	return VERR_NO_MEMORY;
271
272	int rc = rtR0MemObjNetBSDAllocHelper(pMemNetBSD, cb, fExecutable, _4G - 1, false);
273	if (rc)
274	{
275	rtR0MemObjDelete(&pMemNetBSD->Core);
276	return rc;
277	}
278
279	*ppMem = &pMemNetBSD->Core;
280	return VINF_SUCCESS;
281	}
282
283
284	DECLHIDDEN(int) rtR0MemObjNativeAllocCont(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, bool fExecutable)
285	{
286	PRTR0MEMOBJNETBSD pMemNetBSD = (PRTR0MEMOBJNETBSD)rtR0MemObjNew(sizeof(*pMemNetBSD),
287	RTR0MEMOBJTYPE_CONT, NULL, cb);
288	if (!pMemNetBSD)
289	return VERR_NO_MEMORY;
290
291	int rc = rtR0MemObjNetBSDAllocHelper(pMemNetBSD, cb, fExecutable, _4G - 1, true);
292	if (rc)
293	{
294	rtR0MemObjDelete(&pMemNetBSD->Core);
295	return rc;
296	}
297
298	*ppMem = &pMemNetBSD->Core;
299	return VINF_SUCCESS;
300	}
301
302
303	static int rtR0MemObjNetBSDAllocPhysPages(PPRTR0MEMOBJINTERNAL ppMem, RTR0MEMOBJTYPE enmType,
304	size_t cb,
305	RTHCPHYS PhysHighest, size_t uAlignment,
306	bool fContiguous)
307	{
308	paddr_t VmPhysAddrHigh;
309
310	/* create the object. */
311	PRTR0MEMOBJNETBSD pMemNetBSD = (PRTR0MEMOBJNETBSD)rtR0MemObjNew(sizeof(*pMemNetBSD),
312	enmType, NULL, cb);
313	if (!pMemNetBSD)
314	return VERR_NO_MEMORY;
315
316	if (PhysHighest != NIL_RTHCPHYS)
317	VmPhysAddrHigh = PhysHighest;
318	else
319	VmPhysAddrHigh = ~(paddr_t)0;
320
321	int nsegs = fContiguous ? 1 : INT_MAX;
322
323	int error = uvm_pglistalloc(cb, 0, VmPhysAddrHigh, uAlignment, 0, &pMemNetBSD->pglist, nsegs, 1);
324	if (error)
325	{
326	rtR0MemObjDelete(&pMemNetBSD->Core);
327	return VERR_NO_MEMORY;
328	}
329
330	if (fContiguous)
331	{
332	Assert(enmType == RTR0MEMOBJTYPE_PHYS);
333	const struct vm_page * const pg = TAILQ_FIRST(&pMemNetBSD->pglist);
334	pMemNetBSD->Core.u.Phys.PhysBase = VM_PAGE_TO_PHYS(pg);
335	pMemNetBSD->Core.u.Phys.fAllocated = true;
336	}
337	*ppMem = &pMemNetBSD->Core;
338
339	return VINF_SUCCESS;
340	}
341
342
343	DECLHIDDEN(int) rtR0MemObjNativeAllocPhys(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, RTHCPHYS PhysHighest, size_t uAlignment)
344	{
345	return rtR0MemObjNetBSDAllocPhysPages(ppMem, RTR0MEMOBJTYPE_PHYS, cb, PhysHighest, uAlignment, true);
346	}
347
348
349	DECLHIDDEN(int) rtR0MemObjNativeAllocPhysNC(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, RTHCPHYS PhysHighest)
350	{
351	return rtR0MemObjNetBSDAllocPhysPages(ppMem, RTR0MEMOBJTYPE_PHYS_NC, cb, PhysHighest, PAGE_SIZE, false);
352	}
353
354
355	DECLHIDDEN(int) rtR0MemObjNativeEnterPhys(PPRTR0MEMOBJINTERNAL ppMem, RTHCPHYS Phys, size_t cb, uint32_t uCachePolicy)
356	{
357	AssertReturn(uCachePolicy == RTMEM_CACHE_POLICY_DONT_CARE, VERR_NOT_SUPPORTED);
358
359	/* create the object. */
360	PRTR0MEMOBJNETBSD pMemNetBSD = (PRTR0MEMOBJNETBSD)rtR0MemObjNew(sizeof(*pMemNetBSD), RTR0MEMOBJTYPE_PHYS, NULL, cb);
361	if (!pMemNetBSD)
362	return VERR_NO_MEMORY;
363
364	/* there is no allocation here, it needs to be mapped somewhere first. */
365	pMemNetBSD->Core.u.Phys.fAllocated = false;
366	pMemNetBSD->Core.u.Phys.PhysBase = Phys;
367	pMemNetBSD->Core.u.Phys.uCachePolicy = uCachePolicy;
368	TAILQ_INIT(&pMemNetBSD->pglist);
369	*ppMem = &pMemNetBSD->Core;
370	return VINF_SUCCESS;
371	}
372
373
374	DECLHIDDEN(int) rtR0MemObjNativeLockUser(PPRTR0MEMOBJINTERNAL ppMem, RTR3PTR R3Ptr, size_t cb, uint32_t fAccess, RTR0PROCESS R0Process)
375	{
376	PRTR0MEMOBJNETBSD pMemNetBSD = (PRTR0MEMOBJNETBSD)rtR0MemObjNew(sizeof(pMemNetBSD), RTR0MEMOBJTYPE_LOCK, (void )R3Ptr, cb);
377	if (!pMemNetBSD)
378	return VERR_NO_MEMORY;
379
380	int rc = uvm_map_pageable(
381	&((struct proc *)R0Process)->p_vmspace->vm_map,
382	R3Ptr,
383	R3Ptr + cb,
384	0, 0);
385	if (rc)
386	{
387	rtR0MemObjDelete(&pMemNetBSD->Core);
388	return VERR_NO_MEMORY;
389	}
390
391	pMemNetBSD->Core.u.Lock.R0Process = R0Process;
392	*ppMem = &pMemNetBSD->Core;
393	return VINF_SUCCESS;
394	}
395
396
397	DECLHIDDEN(int) rtR0MemObjNativeLockKernel(PPRTR0MEMOBJINTERNAL ppMem, void *pv, size_t cb, uint32_t fAccess)
398	{
399	/* Kernel memory (always?) wired; all memory allocated by vbox code is? */
400	PRTR0MEMOBJNETBSD pMemNetBSD = (PRTR0MEMOBJNETBSD)rtR0MemObjNew(sizeof(*pMemNetBSD), RTR0MEMOBJTYPE_LOCK, pv, cb);
401	if (!pMemNetBSD)
402	return VERR_NO_MEMORY;
403
404	pMemNetBSD->Core.u.Lock.R0Process = NIL_RTR0PROCESS;
405	pMemNetBSD->Core.pv = pv;
406	*ppMem = &pMemNetBSD->Core;
407	return VINF_SUCCESS;
408	}
409
410	DECLHIDDEN(int) rtR0MemObjNativeReserveKernel(PPRTR0MEMOBJINTERNAL ppMem, void *pvFixed, size_t cb, size_t uAlignment)
411	{
412	if (pvFixed != (void *)-1)
413	{
414	/* can we support this? or can we assume the virtual space is already reserved? */
415	printf("reserve specified kernel virtual address not supported\n");
416	return VERR_NOT_SUPPORTED;
417	}
418
419	PRTR0MEMOBJNETBSD pMemNetBSD = (PRTR0MEMOBJNETBSD)rtR0MemObjNew(sizeof(*pMemNetBSD), RTR0MEMOBJTYPE_RES_VIRT, NULL, cb);
420	if (!pMemNetBSD)
421	return VERR_NO_MEMORY;
422
423	vaddr_t virt = uvm_km_alloc(kernel_map, cb, uAlignment,
424	UVM_KMF_VAONLY \| UVM_KMF_WAITVA \| UVM_KMF_CANFAIL);
425	if (virt == 0)
426	{
427	rtR0MemObjDelete(&pMemNetBSD->Core);
428	return VERR_NO_MEMORY;
429	}
430
431	pMemNetBSD->Core.u.ResVirt.R0Process = NIL_RTR0PROCESS;
432	pMemNetBSD->Core.pv = (void *)virt;
433	*ppMem = &pMemNetBSD->Core;
434	return VINF_SUCCESS;
435	}
436
437
438	DECLHIDDEN(int) rtR0MemObjNativeReserveUser(PPRTR0MEMOBJINTERNAL ppMem, RTR3PTR R3PtrFixed, size_t cb, size_t uAlignment, RTR0PROCESS R0Process)
439	{
440	printf("NativeReserveUser\n");
441	return VERR_NOT_SUPPORTED;
442	}
443
444
445	DECLHIDDEN(int) rtR0MemObjNativeMapKernel(PPRTR0MEMOBJINTERNAL ppMem, RTR0MEMOBJ pMemToMap, void *pvFixed, size_t uAlignment,
446	unsigned fProt, size_t offSub, size_t cbSub)
447	{
448	if (pvFixed != (void *)-1)
449	{
450	/* can we support this? or can we assume the virtual space is already reserved? */
451	printf("map to specified kernel virtual address not supported\n");
452	return VERR_NOT_SUPPORTED;
453	}
454
455	PRTR0MEMOBJNETBSD pMemNetBSD0 = (PRTR0MEMOBJNETBSD)pMemToMap;
456	if ((pMemNetBSD0->Core.enmType != RTR0MEMOBJTYPE_PHYS)
457	&& (pMemNetBSD0->Core.enmType != RTR0MEMOBJTYPE_PHYS_NC))
458	{
459	printf("memory to map is not physical\n");
460	return VERR_NOT_SUPPORTED;
461	}
462	size_t sz = cbSub > 0 ? cbSub : pMemNetBSD0->Core.cb;
463
464	PRTR0MEMOBJNETBSD pMemNetBSD = (PRTR0MEMOBJNETBSD)rtR0MemObjNew(sizeof(*pMemNetBSD), RTR0MEMOBJTYPE_MAPPING, NULL, sz);
465
466	vaddr_t virt = uvm_km_alloc(kernel_map, sz, uAlignment,
467	UVM_KMF_VAONLY \| UVM_KMF_WAITVA \| UVM_KMF_CANFAIL);
468	if (virt == 0)
469	{
470	rtR0MemObjDelete(&pMemNetBSD->Core);
471	return VERR_NO_MEMORY;
472	}
473
474	vm_prot_t prot = 0;
475
476	if ((fProt & RTMEM_PROT_READ) == RTMEM_PROT_READ)
477	prot \|= VM_PROT_READ;
478	if ((fProt & RTMEM_PROT_WRITE) == RTMEM_PROT_WRITE)
479	prot \|= VM_PROT_WRITE;
480	if ((fProt & RTMEM_PROT_EXEC) == RTMEM_PROT_EXEC)
481	prot \|= VM_PROT_EXECUTE;
482
483	struct vm_page *page;
484	vaddr_t virt2 = virt;
485	size_t map_pos = 0;
486	TAILQ_FOREACH(page, &pMemNetBSD0->pglist, pageq.queue)
487	{
488	if (map_pos >= offSub)
489	{
490	if (cbSub > 0 && (map_pos >= offSub + cbSub))
491	break;
492
493	pmap_kenter_pa(virt2, VM_PAGE_TO_PHYS(page), prot, 0);
494	virt2 += PAGE_SIZE;
495	}
496	map_pos += PAGE_SIZE;
497	}
498
499	pMemNetBSD->Core.pv = (void *)virt;
500	pMemNetBSD->Core.u.Mapping.R0Process = NIL_RTR0PROCESS;
501	*ppMem = &pMemNetBSD->Core;
502
503	return VINF_SUCCESS;
504	}
505
506
507	DECLHIDDEN(int) rtR0MemObjNativeMapUser(PPRTR0MEMOBJINTERNAL ppMem, RTR0MEMOBJ pMemToMap, RTR3PTR R3PtrFixed, size_t uAlignment,
508	unsigned fProt, RTR0PROCESS R0Process, size_t offSub, size_t cbSub)
509	{
510	printf("NativeMapUser\n");
511	return VERR_NOT_SUPPORTED;
512	}
513
514
515	DECLHIDDEN(int) rtR0MemObjNativeProtect(PRTR0MEMOBJINTERNAL pMem, size_t offSub, size_t cbSub, uint32_t fProt)
516	{
517	vm_prot_t ProtectionFlags = 0;
518	vaddr_t AddrStart = (vaddr_t)pMem->pv + offSub;
519	vm_map_t pVmMap = rtR0MemObjNetBSDGetMap(pMem);
520
521	if (!pVmMap)
522	return VERR_NOT_SUPPORTED;
523
524	if ((fProt & RTMEM_PROT_READ) == RTMEM_PROT_READ)
525	ProtectionFlags \|= UVM_PROT_R;
526	if ((fProt & RTMEM_PROT_WRITE) == RTMEM_PROT_WRITE)
527	ProtectionFlags \|= UVM_PROT_W;
528	if ((fProt & RTMEM_PROT_EXEC) == RTMEM_PROT_EXEC)
529	ProtectionFlags \|= UVM_PROT_X;
530
531	int error = uvm_map_protect(pVmMap, AddrStart, AddrStart + cbSub,
532	ProtectionFlags, 0);
533	if (!error)
534	return VINF_SUCCESS;
535
536	return VERR_NOT_SUPPORTED;
537	}
538
539
540	DECLHIDDEN(RTHCPHYS) rtR0MemObjNativeGetPagePhysAddr(PRTR0MEMOBJINTERNAL pMem, size_t iPage)
541	{
542	PRTR0MEMOBJNETBSD pMemNetBSD = (PRTR0MEMOBJNETBSD)pMem;
543
544	switch (pMemNetBSD->Core.enmType)
545	{
546	case RTR0MEMOBJTYPE_PAGE:
547	case RTR0MEMOBJTYPE_LOW:
548	{
549	vaddr_t va = (vaddr_t)pMemNetBSD->Core.pv + ptoa(iPage);
550	paddr_t pa = 0;
551	pmap_extract(pmap_kernel(), va, &pa);
552	return pa;
553	}
554	case RTR0MEMOBJTYPE_CONT:
555	return pMemNetBSD->Core.u.Cont.Phys + ptoa(iPage);
556	case RTR0MEMOBJTYPE_PHYS:
557	return pMemNetBSD->Core.u.Phys.PhysBase + ptoa(iPage);
558	case RTR0MEMOBJTYPE_PHYS_NC:
559	{
560	struct vm_page *page;
561	size_t i = 0;
562	TAILQ_FOREACH(page, &pMemNetBSD->pglist, pageq.queue)
563	{
564	if (i == iPage)
565	break;
566	i++;
567	}
568	return VM_PAGE_TO_PHYS(page);
569	}
570	case RTR0MEMOBJTYPE_LOCK:
571	case RTR0MEMOBJTYPE_MAPPING:
572	{
573	pmap_t pmap;
574	if (pMem->u.Lock.R0Process == NIL_RTR0PROCESS)
575	pmap = pmap_kernel();
576	else
577	pmap = ((struct proc *)pMem->u.Lock.R0Process)->p_vmspace->vm_map.pmap;
578	vaddr_t va = (vaddr_t)pMemNetBSD->Core.pv + ptoa(iPage);
579	paddr_t pa = 0;
580	pmap_extract(pmap, va, &pa);
581	return pa;
582	}
583	case RTR0MEMOBJTYPE_RES_VIRT:
584	return NIL_RTHCPHYS;
585	default:
586	return NIL_RTHCPHYS;
587	}
588	}
589

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source: vbox/trunk/src/VBox/Runtime/r0drv/netbsd/memobj-r0drv-netbsd.c@ 91446

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