memobj-r0drv-netbsd.c@ 78381

Last change on this file since 78381 was 78120, checked in by vboxsync, 6 years ago
IPRT: Started adding a RTR0MemObjMapUserEx function that takes offSub and cbSub. bugref:9217
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 19.4 KB

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1	/* $Id: memobj-r0drv-netbsd.c 78120 2019-04-12 13:20:50Z 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) 2007-2019 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	*
30	* Copyright (c) 2007 knut st. osmundsen <[email protected]>
31	* Copyright (c) 2011 Andriy Gapon <[email protected]>
32	* Copyright (c) 2014 Arto Huusko
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-netbsd-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 NetBSD version of the memory object structure.
77	*/
78	typedef struct RTR0MEMOBJNETBSD
79	{
80	/** The core structure. */
81	RTR0MEMOBJINTERNAL Core;
82	size_t size;
83	struct pglist pglist;
84	} RTR0MEMOBJNETBSD, *PRTR0MEMOBJNETBSD;
85
86
87	typedef struct vm_map* vm_map_t;
88
89	/**
90	* Gets the virtual memory map the specified object is mapped into.
91	*
92	* @returns VM map handle on success, NULL if no map.
93	* @param pMem The memory object.
94	*/
95	static vm_map_t rtR0MemObjNetBSDGetMap(PRTR0MEMOBJINTERNAL pMem)
96	{
97	switch (pMem->enmType)
98	{
99	case RTR0MEMOBJTYPE_PAGE:
100	case RTR0MEMOBJTYPE_LOW:
101	case RTR0MEMOBJTYPE_CONT:
102	return kernel_map;
103
104	case RTR0MEMOBJTYPE_PHYS:
105	case RTR0MEMOBJTYPE_PHYS_NC:
106	return NULL; /* pretend these have no mapping atm. */
107
108	case RTR0MEMOBJTYPE_LOCK:
109	return pMem->u.Lock.R0Process == NIL_RTR0PROCESS
110	? kernel_map
111	: &((struct proc *)pMem->u.Lock.R0Process)->p_vmspace->vm_map;
112
113	case RTR0MEMOBJTYPE_RES_VIRT:
114	return pMem->u.ResVirt.R0Process == NIL_RTR0PROCESS
115	? kernel_map
116	: &((struct proc *)pMem->u.ResVirt.R0Process)->p_vmspace->vm_map;
117
118	case RTR0MEMOBJTYPE_MAPPING:
119	return pMem->u.Mapping.R0Process == NIL_RTR0PROCESS
120	? kernel_map
121	: &((struct proc *)pMem->u.Mapping.R0Process)->p_vmspace->vm_map;
122
123	default:
124	return NULL;
125	}
126	}
127
128
129	DECLHIDDEN(int) rtR0MemObjNativeFree(RTR0MEMOBJ pMem)
130	{
131	PRTR0MEMOBJNETBSD pMemNetBSD = (PRTR0MEMOBJNETBSD)pMem;
132	int rc;
133
134	switch (pMemNetBSD->Core.enmType)
135	{
136	case RTR0MEMOBJTYPE_PAGE:
137	{
138	kmem_free(pMemNetBSD->Core.pv, pMemNetBSD->Core.cb);
139	break;
140	}
141	case RTR0MEMOBJTYPE_LOW:
142	case RTR0MEMOBJTYPE_CONT:
143	{
144	/* Unmap */
145	pmap_kremove((vaddr_t)pMemNetBSD->Core.pv, pMemNetBSD->Core.cb);
146	/* Free the virtual space */
147	uvm_km_free(kernel_map, (vaddr_t)pMemNetBSD->Core.pv, pMemNetBSD->Core.cb, UVM_KMF_VAONLY);
148	/* Free the physical pages */
149	uvm_pglistfree(&pMemNetBSD->pglist);
150	break;
151	}
152	case RTR0MEMOBJTYPE_PHYS:
153	case RTR0MEMOBJTYPE_PHYS_NC:
154	{
155	/* Free the physical pages */
156	uvm_pglistfree(&pMemNetBSD->pglist);
157	break;
158	}
159	case RTR0MEMOBJTYPE_LOCK:
160	if (pMemNetBSD->Core.u.Lock.R0Process != NIL_RTR0PROCESS)
161	{
162	uvm_map_pageable(
163	&((struct proc *)pMemNetBSD->Core.u.Lock.R0Process)->p_vmspace->vm_map,
164	(vaddr_t)pMemNetBSD->Core.pv,
165	((vaddr_t)pMemNetBSD->Core.pv) + pMemNetBSD->Core.cb,
166	1, 0);
167	}
168	break;
169	case RTR0MEMOBJTYPE_RES_VIRT:
170	if (pMemNetBSD->Core.u.Lock.R0Process == NIL_RTR0PROCESS)
171	{
172	uvm_km_free(kernel_map, (vaddr_t)pMemNetBSD->Core.pv, pMemNetBSD->Core.cb, UVM_KMF_VAONLY);
173	}
174	break;
175	case RTR0MEMOBJTYPE_MAPPING:
176	if (pMemNetBSD->Core.u.Lock.R0Process == NIL_RTR0PROCESS)
177	{
178	pmap_kremove((vaddr_t)pMemNetBSD->Core.pv, pMemNetBSD->Core.cb);
179	uvm_km_free(kernel_map, (vaddr_t)pMemNetBSD->Core.pv, pMemNetBSD->Core.cb, UVM_KMF_VAONLY);
180	}
181	break;
182
183	default:
184	AssertMsgFailed(("enmType=%d\n", pMemNetBSD->Core.enmType));
185	return VERR_INTERNAL_ERROR;
186	}
187
188	return VINF_SUCCESS;
189	}
190
191	static int rtR0MemObjNetBSDAllocHelper(PRTR0MEMOBJNETBSD pMemNetBSD, size_t cb, bool fExecutable,
192	paddr_t VmPhysAddrHigh, bool fContiguous)
193	{
194	/* Virtual space first */
195	vaddr_t virt = uvm_km_alloc(kernel_map, cb, 0,
196	UVM_KMF_VAONLY \| UVM_KMF_WAITVA \| UVM_KMF_CANFAIL);
197	if (virt == 0)
198	return VERR_NO_MEMORY;
199
200	struct pglist *rlist = &pMemNetBSD->pglist;
201
202	int nsegs = fContiguous ? 1 : INT_MAX;
203
204	/* Physical pages */
205	if (uvm_pglistalloc(cb, 0, VmPhysAddrHigh,
206	PAGE_SIZE, 0, rlist, nsegs, 1) != 0)
207	{
208	uvm_km_free(kernel_map, virt, cb, UVM_KMF_VAONLY);
209	return VERR_NO_MEMORY;
210	}
211
212	/* Map */
213	struct vm_page *page;
214	vm_prot_t prot = VM_PROT_READ \| VM_PROT_WRITE;
215	if (fExecutable)
216	prot \|= VM_PROT_EXECUTE;
217	vaddr_t virt2 = virt;
218	TAILQ_FOREACH(page, rlist, pageq.queue)
219	{
220	pmap_kenter_pa(virt2, VM_PAGE_TO_PHYS(page), prot, 0);
221	virt2 += PAGE_SIZE;
222	}
223
224	pMemNetBSD->Core.pv = (void *)virt;
225	if (fContiguous)
226	{
227	page = TAILQ_FIRST(rlist);
228	pMemNetBSD->Core.u.Cont.Phys = VM_PAGE_TO_PHYS(page);
229	}
230	return VINF_SUCCESS;
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) rtR0MemObjNativeAllocLow(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, bool fExecutable)
259	{
260	PRTR0MEMOBJNETBSD pMemNetBSD = (PRTR0MEMOBJNETBSD)rtR0MemObjNew(sizeof(*pMemNetBSD),
261	RTR0MEMOBJTYPE_LOW, NULL, cb);
262	if (!pMemNetBSD)
263	return VERR_NO_MEMORY;
264
265	int rc = rtR0MemObjNetBSDAllocHelper(pMemNetBSD, cb, fExecutable, _4G - 1, false);
266	if (rc)
267	{
268	rtR0MemObjDelete(&pMemNetBSD->Core);
269	return rc;
270	}
271
272	*ppMem = &pMemNetBSD->Core;
273	return VINF_SUCCESS;
274	}
275
276
277	DECLHIDDEN(int) rtR0MemObjNativeAllocCont(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, bool fExecutable)
278	{
279	PRTR0MEMOBJNETBSD pMemNetBSD = (PRTR0MEMOBJNETBSD)rtR0MemObjNew(sizeof(*pMemNetBSD),
280	RTR0MEMOBJTYPE_CONT, NULL, cb);
281	if (!pMemNetBSD)
282	return VERR_NO_MEMORY;
283
284	int rc = rtR0MemObjNetBSDAllocHelper(pMemNetBSD, cb, fExecutable, _4G - 1, true);
285	if (rc)
286	{
287	rtR0MemObjDelete(&pMemNetBSD->Core);
288	return rc;
289	}
290
291	*ppMem = &pMemNetBSD->Core;
292	return VINF_SUCCESS;
293	}
294
295
296	static int rtR0MemObjNetBSDAllocPhysPages(PPRTR0MEMOBJINTERNAL ppMem, RTR0MEMOBJTYPE enmType,
297	size_t cb,
298	RTHCPHYS PhysHighest, size_t uAlignment,
299	bool fContiguous)
300	{
301	paddr_t VmPhysAddrHigh;
302
303	/* create the object. */
304	PRTR0MEMOBJNETBSD pMemNetBSD = (PRTR0MEMOBJNETBSD)rtR0MemObjNew(sizeof(*pMemNetBSD),
305	enmType, NULL, cb);
306	if (!pMemNetBSD)
307	return VERR_NO_MEMORY;
308
309	if (PhysHighest != NIL_RTHCPHYS)
310	VmPhysAddrHigh = PhysHighest;
311	else
312	VmPhysAddrHigh = ~(paddr_t)0;
313
314	int nsegs = fContiguous ? 1 : INT_MAX;
315
316	int error = uvm_pglistalloc(cb, 0, VmPhysAddrHigh, uAlignment, 0, &pMemNetBSD->pglist, nsegs, 1);
317	if (error)
318	{
319	rtR0MemObjDelete(&pMemNetBSD->Core);
320	return VERR_NO_MEMORY;
321	}
322
323	if (fContiguous)
324	{
325	Assert(enmType == RTR0MEMOBJTYPE_PHYS);
326	const struct vm_page * const pg = TAILQ_FIRST(&pMemNetBSD->pglist);
327	pMemNetBSD->Core.u.Phys.PhysBase = VM_PAGE_TO_PHYS(pg);
328	pMemNetBSD->Core.u.Phys.fAllocated = true;
329	}
330	*ppMem = &pMemNetBSD->Core;
331
332	return VINF_SUCCESS;
333	}
334
335
336	DECLHIDDEN(int) rtR0MemObjNativeAllocPhys(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, RTHCPHYS PhysHighest, size_t uAlignment)
337	{
338	return rtR0MemObjNetBSDAllocPhysPages(ppMem, RTR0MEMOBJTYPE_PHYS, cb, PhysHighest, uAlignment, true);
339	}
340
341
342	DECLHIDDEN(int) rtR0MemObjNativeAllocPhysNC(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, RTHCPHYS PhysHighest)
343	{
344	return rtR0MemObjNetBSDAllocPhysPages(ppMem, RTR0MEMOBJTYPE_PHYS_NC, cb, PhysHighest, PAGE_SIZE, false);
345	}
346
347
348	DECLHIDDEN(int) rtR0MemObjNativeEnterPhys(PPRTR0MEMOBJINTERNAL ppMem, RTHCPHYS Phys, size_t cb, uint32_t uCachePolicy)
349	{
350	AssertReturn(uCachePolicy == RTMEM_CACHE_POLICY_DONT_CARE, VERR_NOT_SUPPORTED);
351
352	/* create the object. */
353	PRTR0MEMOBJNETBSD pMemNetBSD = (PRTR0MEMOBJNETBSD)rtR0MemObjNew(sizeof(*pMemNetBSD), RTR0MEMOBJTYPE_PHYS, NULL, cb);
354	if (!pMemNetBSD)
355	return VERR_NO_MEMORY;
356
357	/* there is no allocation here, it needs to be mapped somewhere first. */
358	pMemNetBSD->Core.u.Phys.fAllocated = false;
359	pMemNetBSD->Core.u.Phys.PhysBase = Phys;
360	pMemNetBSD->Core.u.Phys.uCachePolicy = uCachePolicy;
361	TAILQ_INIT(&pMemNetBSD->pglist);
362	*ppMem = &pMemNetBSD->Core;
363	return VINF_SUCCESS;
364	}
365
366
367	DECLHIDDEN(int) rtR0MemObjNativeLockUser(PPRTR0MEMOBJINTERNAL ppMem, RTR3PTR R3Ptr, size_t cb, uint32_t fAccess, RTR0PROCESS R0Process)
368	{
369	PRTR0MEMOBJNETBSD pMemNetBSD = (PRTR0MEMOBJNETBSD)rtR0MemObjNew(sizeof(pMemNetBSD), RTR0MEMOBJTYPE_LOCK, (void )R3Ptr, cb);
370	if (!pMemNetBSD)
371	return VERR_NO_MEMORY;
372
373	int rc = uvm_map_pageable(
374	&((struct proc *)R0Process)->p_vmspace->vm_map,
375	R3Ptr,
376	R3Ptr + cb,
377	0, 0);
378	if (rc)
379	{
380	rtR0MemObjDelete(&pMemNetBSD->Core);
381	return VERR_NO_MEMORY;
382	}
383
384	pMemNetBSD->Core.u.Lock.R0Process = R0Process;
385	*ppMem = &pMemNetBSD->Core;
386	return VINF_SUCCESS;
387	}
388
389
390	DECLHIDDEN(int) rtR0MemObjNativeLockKernel(PPRTR0MEMOBJINTERNAL ppMem, void *pv, size_t cb, uint32_t fAccess)
391	{
392	/* Kernel memory (always?) wired; all memory allocated by vbox code is? */
393	PRTR0MEMOBJNETBSD pMemNetBSD = (PRTR0MEMOBJNETBSD)rtR0MemObjNew(sizeof(*pMemNetBSD), RTR0MEMOBJTYPE_LOCK, pv, cb);
394	if (!pMemNetBSD)
395	return VERR_NO_MEMORY;
396
397	pMemNetBSD->Core.u.Lock.R0Process = NIL_RTR0PROCESS;
398	pMemNetBSD->Core.pv = pv;
399	*ppMem = &pMemNetBSD->Core;
400	return VINF_SUCCESS;
401	}
402
403	DECLHIDDEN(int) rtR0MemObjNativeReserveKernel(PPRTR0MEMOBJINTERNAL ppMem, void *pvFixed, size_t cb, size_t uAlignment)
404	{
405	if (pvFixed != (void *)-1)
406	{
407	/* can we support this? or can we assume the virtual space is already reserved? */
408	printf("reserve specified kernel virtual address not supported\n");
409	return VERR_NOT_SUPPORTED;
410	}
411
412	PRTR0MEMOBJNETBSD pMemNetBSD = (PRTR0MEMOBJNETBSD)rtR0MemObjNew(sizeof(*pMemNetBSD), RTR0MEMOBJTYPE_RES_VIRT, NULL, cb);
413	if (!pMemNetBSD)
414	return VERR_NO_MEMORY;
415
416	vaddr_t virt = uvm_km_alloc(kernel_map, cb, uAlignment,
417	UVM_KMF_VAONLY \| UVM_KMF_WAITVA \| UVM_KMF_CANFAIL);
418	if (virt == 0)
419	{
420	rtR0MemObjDelete(&pMemNetBSD->Core);
421	return VERR_NO_MEMORY;
422	}
423
424	pMemNetBSD->Core.u.ResVirt.R0Process = NIL_RTR0PROCESS;
425	pMemNetBSD->Core.pv = (void *)virt;
426	*ppMem = &pMemNetBSD->Core;
427	return VINF_SUCCESS;
428	}
429
430
431	DECLHIDDEN(int) rtR0MemObjNativeReserveUser(PPRTR0MEMOBJINTERNAL ppMem, RTR3PTR R3PtrFixed, size_t cb, size_t uAlignment, RTR0PROCESS R0Process)
432	{
433	printf("NativeReserveUser\n");
434	return VERR_NOT_SUPPORTED;
435	}
436
437
438	DECLHIDDEN(int) rtR0MemObjNativeMapKernel(PPRTR0MEMOBJINTERNAL ppMem, RTR0MEMOBJ pMemToMap, void *pvFixed, size_t uAlignment,
439	unsigned fProt, size_t offSub, size_t cbSub)
440	{
441	if (pvFixed != (void *)-1)
442	{
443	/* can we support this? or can we assume the virtual space is already reserved? */
444	printf("map to specified kernel virtual address not supported\n");
445	return VERR_NOT_SUPPORTED;
446	}
447
448	PRTR0MEMOBJNETBSD pMemNetBSD0 = (PRTR0MEMOBJNETBSD)pMemToMap;
449	if ((pMemNetBSD0->Core.enmType != RTR0MEMOBJTYPE_PHYS)
450	&& (pMemNetBSD0->Core.enmType != RTR0MEMOBJTYPE_PHYS_NC))
451	{
452	printf("memory to map is not physical\n");
453	return VERR_NOT_SUPPORTED;
454	}
455	size_t sz = cbSub > 0 ? cbSub : pMemNetBSD0->Core.cb;
456
457	PRTR0MEMOBJNETBSD pMemNetBSD = (PRTR0MEMOBJNETBSD)rtR0MemObjNew(sizeof(*pMemNetBSD), RTR0MEMOBJTYPE_MAPPING, NULL, sz);
458
459	vaddr_t virt = uvm_km_alloc(kernel_map, sz, uAlignment,
460	UVM_KMF_VAONLY \| UVM_KMF_WAITVA \| UVM_KMF_CANFAIL);
461	if (virt == 0)
462	{
463	rtR0MemObjDelete(&pMemNetBSD->Core);
464	return VERR_NO_MEMORY;
465	}
466
467	vm_prot_t prot = 0;
468
469	if ((fProt & RTMEM_PROT_READ) == RTMEM_PROT_READ)
470	prot \|= VM_PROT_READ;
471	if ((fProt & RTMEM_PROT_WRITE) == RTMEM_PROT_WRITE)
472	prot \|= VM_PROT_WRITE;
473	if ((fProt & RTMEM_PROT_EXEC) == RTMEM_PROT_EXEC)
474	prot \|= VM_PROT_EXECUTE;
475
476	struct vm_page *page;
477	vaddr_t virt2 = virt;
478	size_t map_pos = 0;
479	TAILQ_FOREACH(page, &pMemNetBSD0->pglist, pageq.queue)
480	{
481	if (map_pos >= offSub)
482	{
483	if (cbSub > 0 && (map_pos >= offSub + cbSub))
484	break;
485
486	pmap_kenter_pa(virt2, VM_PAGE_TO_PHYS(page), prot, 0);
487	virt2 += PAGE_SIZE;
488	}
489	map_pos += PAGE_SIZE;
490	}
491
492	pMemNetBSD->Core.pv = (void *)virt;
493	pMemNetBSD->Core.u.Mapping.R0Process = NIL_RTR0PROCESS;
494	*ppMem = &pMemNetBSD->Core;
495
496	return VINF_SUCCESS;
497	}
498
499
500	DECLHIDDEN(int) rtR0MemObjNativeMapUser(PPRTR0MEMOBJINTERNAL ppMem, RTR0MEMOBJ pMemToMap, RTR3PTR R3PtrFixed, size_t uAlignment,
501	unsigned fProt, RTR0PROCESS R0Process, size_t offSub, size_t cbSub)
502	{
503	printf("NativeMapUser\n");
504	return VERR_NOT_SUPPORTED;
505	}
506
507
508	DECLHIDDEN(int) rtR0MemObjNativeProtect(PRTR0MEMOBJINTERNAL pMem, size_t offSub, size_t cbSub, uint32_t fProt)
509	{
510	vm_prot_t ProtectionFlags = 0;
511	vaddr_t AddrStart = (vaddr_t)pMem->pv + offSub;
512	vm_map_t pVmMap = rtR0MemObjNetBSDGetMap(pMem);
513
514	if (!pVmMap)
515	return VERR_NOT_SUPPORTED;
516
517	if ((fProt & RTMEM_PROT_READ) == RTMEM_PROT_READ)
518	ProtectionFlags \|= UVM_PROT_R;
519	if ((fProt & RTMEM_PROT_WRITE) == RTMEM_PROT_WRITE)
520	ProtectionFlags \|= UVM_PROT_W;
521	if ((fProt & RTMEM_PROT_EXEC) == RTMEM_PROT_EXEC)
522	ProtectionFlags \|= UVM_PROT_X;
523
524	int error = uvm_map_protect(pVmMap, AddrStart, AddrStart + cbSub,
525	ProtectionFlags, 0);
526	if (!error)
527	return VINF_SUCCESS;
528
529	return VERR_NOT_SUPPORTED;
530	}
531
532
533	DECLHIDDEN(RTHCPHYS) rtR0MemObjNativeGetPagePhysAddr(PRTR0MEMOBJINTERNAL pMem, size_t iPage)
534	{
535	PRTR0MEMOBJNETBSD pMemNetBSD = (PRTR0MEMOBJNETBSD)pMem;
536
537	switch (pMemNetBSD->Core.enmType)
538	{
539	case RTR0MEMOBJTYPE_PAGE:
540	case RTR0MEMOBJTYPE_LOW:
541	{
542	vaddr_t va = (vaddr_t)pMemNetBSD->Core.pv + ptoa(iPage);
543	paddr_t pa = 0;
544	pmap_extract(pmap_kernel(), va, &pa);
545	return pa;
546	}
547	case RTR0MEMOBJTYPE_CONT:
548	return pMemNetBSD->Core.u.Cont.Phys + ptoa(iPage);
549	case RTR0MEMOBJTYPE_PHYS:
550	return pMemNetBSD->Core.u.Phys.PhysBase + ptoa(iPage);
551	case RTR0MEMOBJTYPE_PHYS_NC:
552	{
553	struct vm_page *page;
554	size_t i = 0;
555	TAILQ_FOREACH(page, &pMemNetBSD->pglist, pageq.queue)
556	{
557	if (i == iPage)
558	break;
559	i++;
560	}
561	return VM_PAGE_TO_PHYS(page);
562	}
563	case RTR0MEMOBJTYPE_LOCK:
564	case RTR0MEMOBJTYPE_MAPPING:
565	{
566	pmap_t pmap;
567	if (pMem->u.Lock.R0Process == NIL_RTR0PROCESS)
568	pmap = pmap_kernel();
569	else
570	pmap = ((struct proc *)pMem->u.Lock.R0Process)->p_vmspace->vm_map.pmap;
571	vaddr_t va = (vaddr_t)pMemNetBSD->Core.pv + ptoa(iPage);
572	paddr_t pa = 0;
573	pmap_extract(pmap, va, &pa);
574	return pa;
575	}
576	case RTR0MEMOBJTYPE_RES_VIRT:
577	return NIL_RTHCPHYS;
578	default:
579	return NIL_RTHCPHYS;
580	}
581	}
582

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source: vbox/trunk/src/VBox/Runtime/r0drv/netbsd/memobj-r0drv-netbsd.c@ 78381

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