memobj-r0drv-netbsd.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-netbsd.c 91481 2021-09-30 00:06:31Z 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 <[email protected]>
30	* Copyright (c) 2011 Andriy Gapon <[email protected]>
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), RTR0MEMOBJTYPE_PAGE, NULL, cb, NULL);
236	if (!pMemNetBSD)
237	return VERR_NO_MEMORY;
238
239	void *pvMem = kmem_alloc(cb, KM_SLEEP);
240	if (RT_UNLIKELY(!pvMem))
241	{
242	rtR0MemObjDelete(&pMemNetBSD->Core);
243	return VERR_NO_PAGE_MEMORY;
244	}
245	if (fExecutable)
246	{
247	pmap_protect(pmap_kernel(), (vaddr_t)pvMem, ((vaddr_t)pvMem) + cb,
248	VM_PROT_READ \| VM_PROT_WRITE \| VM_PROT_EXECUTE);
249	}
250
251	pMemNetBSD->Core.pv = pvMem;
252	*ppMem = &pMemNetBSD->Core;
253	return VINF_SUCCESS;
254	}
255
256
257	DECLHIDDEN(int) rtR0MemObjNativeAllocLarge(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, size_t cbLargePage, uint32_t fFlags,
258	const char *pszTag)
259	{
260	return rtR0MemObjFallbackAllocLarge(ppMem, cb, cbLargePage, fFlags, pszTag);
261	}
262
263
264	DECLHIDDEN(int) rtR0MemObjNativeAllocLow(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, bool fExecutable)
265	{
266	PRTR0MEMOBJNETBSD pMemNetBSD = (PRTR0MEMOBJNETBSD)rtR0MemObjNew(sizeof(*pMemNetBSD), RTR0MEMOBJTYPE_LOW, NULL, cb, NULL);
267	if (!pMemNetBSD)
268	return VERR_NO_MEMORY;
269
270	int rc = rtR0MemObjNetBSDAllocHelper(pMemNetBSD, cb, fExecutable, _4G - 1, false);
271	if (rc)
272	{
273	rtR0MemObjDelete(&pMemNetBSD->Core);
274	return rc;
275	}
276
277	*ppMem = &pMemNetBSD->Core;
278	return VINF_SUCCESS;
279	}
280
281
282	DECLHIDDEN(int) rtR0MemObjNativeAllocCont(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, bool fExecutable)
283	{
284	PRTR0MEMOBJNETBSD pMemNetBSD = (PRTR0MEMOBJNETBSD)rtR0MemObjNew(sizeof(*pMemNetBSD), RTR0MEMOBJTYPE_CONT, NULL, cb, NULL);
285	if (!pMemNetBSD)
286	return VERR_NO_MEMORY;
287
288	int rc = rtR0MemObjNetBSDAllocHelper(pMemNetBSD, cb, fExecutable, _4G - 1, true);
289	if (rc)
290	{
291	rtR0MemObjDelete(&pMemNetBSD->Core);
292	return rc;
293	}
294
295	*ppMem = &pMemNetBSD->Core;
296	return VINF_SUCCESS;
297	}
298
299
300	static int rtR0MemObjNetBSDAllocPhysPages(PPRTR0MEMOBJINTERNAL ppMem, RTR0MEMOBJTYPE enmType, size_t cb,
301	RTHCPHYS PhysHighest, size_t uAlignment, bool fContiguous, const char *pszTag)
302	{
303	paddr_t VmPhysAddrHigh;
304
305	/* create the object. */
306	PRTR0MEMOBJNETBSD pMemNetBSD = (PRTR0MEMOBJNETBSD)rtR0MemObjNew(sizeof(*pMemNetBSD), enmType, NULL, cb, pszTag);
307	if (!pMemNetBSD)
308	return VERR_NO_MEMORY;
309
310	if (PhysHighest != NIL_RTHCPHYS)
311	VmPhysAddrHigh = PhysHighest;
312	else
313	VmPhysAddrHigh = ~(paddr_t)0;
314
315	int nsegs = fContiguous ? 1 : INT_MAX;
316
317	int error = uvm_pglistalloc(cb, 0, VmPhysAddrHigh, uAlignment, 0, &pMemNetBSD->pglist, nsegs, 1);
318	if (error)
319	{
320	rtR0MemObjDelete(&pMemNetBSD->Core);
321	return VERR_NO_MEMORY;
322	}
323
324	if (fContiguous)
325	{
326	Assert(enmType == RTR0MEMOBJTYPE_PHYS);
327	const struct vm_page * const pg = TAILQ_FIRST(&pMemNetBSD->pglist);
328	pMemNetBSD->Core.u.Phys.PhysBase = VM_PAGE_TO_PHYS(pg);
329	pMemNetBSD->Core.u.Phys.fAllocated = true;
330	}
331	*ppMem = &pMemNetBSD->Core;
332
333	return VINF_SUCCESS;
334	}
335
336
337	DECLHIDDEN(int) rtR0MemObjNativeAllocPhys(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, RTHCPHYS PhysHighest, size_t uAlignment,
338	const char *pszTag)
339	{
340	return rtR0MemObjNetBSDAllocPhysPages(ppMem, RTR0MEMOBJTYPE_PHYS, cb, PhysHighest, uAlignment, true, pszTag);
341	}
342
343
344	DECLHIDDEN(int) rtR0MemObjNativeAllocPhysNC(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, RTHCPHYS PhysHighest)
345	{
346	return rtR0MemObjNetBSDAllocPhysPages(ppMem, RTR0MEMOBJTYPE_PHYS_NC, cb, PhysHighest, PAGE_SIZE, false, pszTag);
347	}
348
349
350	DECLHIDDEN(int) rtR0MemObjNativeEnterPhys(PPRTR0MEMOBJINTERNAL ppMem, RTHCPHYS Phys, size_t cb, uint32_t uCachePolicy,
351	const char *pszTag)
352	{
353	AssertReturn(uCachePolicy == RTMEM_CACHE_POLICY_DONT_CARE, VERR_NOT_SUPPORTED);
354
355	/* create the object. */
356	PRTR0MEMOBJNETBSD pMemNetBSD = (PRTR0MEMOBJNETBSD)rtR0MemObjNew(sizeof(*pMemNetBSD), RTR0MEMOBJTYPE_PHYS, NULL, cb, pszTag);
357	if (!pMemNetBSD)
358	return VERR_NO_MEMORY;
359
360	/* there is no allocation here, it needs to be mapped somewhere first. */
361	pMemNetBSD->Core.u.Phys.fAllocated = false;
362	pMemNetBSD->Core.u.Phys.PhysBase = Phys;
363	pMemNetBSD->Core.u.Phys.uCachePolicy = uCachePolicy;
364	TAILQ_INIT(&pMemNetBSD->pglist);
365	*ppMem = &pMemNetBSD->Core;
366	return VINF_SUCCESS;
367	}
368
369
370	DECLHIDDEN(int) rtR0MemObjNativeLockUser(PPRTR0MEMOBJINTERNAL ppMem, RTR3PTR R3Ptr, size_t cb, uint32_t fAccess, RTR0PROCESS R0Process)
371	{
372	PRTR0MEMOBJNETBSD pMemNetBSD = (PRTR0MEMOBJNETBSD)rtR0MemObjNew(sizeof(pMemNetBSD), RTR0MEMOBJTYPE_LOCK, (void )R3Ptr, cb, NULL);
373	if (!pMemNetBSD)
374	return VERR_NO_MEMORY;
375
376	int rc = uvm_map_pageable(
377	&((struct proc *)R0Process)->p_vmspace->vm_map,
378	R3Ptr,
379	R3Ptr + cb,
380	0, 0);
381	if (rc)
382	{
383	rtR0MemObjDelete(&pMemNetBSD->Core);
384	return VERR_NO_MEMORY;
385	}
386
387	pMemNetBSD->Core.u.Lock.R0Process = R0Process;
388	*ppMem = &pMemNetBSD->Core;
389	return VINF_SUCCESS;
390	}
391
392
393	DECLHIDDEN(int) rtR0MemObjNativeLockKernel(PPRTR0MEMOBJINTERNAL ppMem, void *pv, size_t cb, uint32_t fAccess)
394	{
395	/* Kernel memory (always?) wired; all memory allocated by vbox code is? */
396	PRTR0MEMOBJNETBSD pMemNetBSD = (PRTR0MEMOBJNETBSD)rtR0MemObjNew(sizeof(*pMemNetBSD), RTR0MEMOBJTYPE_LOCK, pv, cb, NULL);
397	if (!pMemNetBSD)
398	return VERR_NO_MEMORY;
399
400	pMemNetBSD->Core.u.Lock.R0Process = NIL_RTR0PROCESS;
401	pMemNetBSD->Core.pv = pv;
402	*ppMem = &pMemNetBSD->Core;
403	return VINF_SUCCESS;
404	}
405
406	DECLHIDDEN(int) rtR0MemObjNativeReserveKernel(PPRTR0MEMOBJINTERNAL ppMem, void *pvFixed, size_t cb, size_t uAlignment,
407	const char *pszTag)
408	{
409	if (pvFixed != (void *)-1)
410	{
411	/* can we support this? or can we assume the virtual space is already reserved? */
412	printf("reserve specified kernel virtual address not supported\n");
413	return VERR_NOT_SUPPORTED;
414	}
415
416	PRTR0MEMOBJNETBSD pMemNetBSD = (PRTR0MEMOBJNETBSD)rtR0MemObjNew(sizeof(*pMemNetBSD), RTR0MEMOBJTYPE_RES_VIRT,
417	NULL, cb, pszTag);
418	if (!pMemNetBSD)
419	return VERR_NO_MEMORY;
420
421	vaddr_t virt = uvm_km_alloc(kernel_map, cb, uAlignment,
422	UVM_KMF_VAONLY \| UVM_KMF_WAITVA \| UVM_KMF_CANFAIL);
423	if (virt == 0)
424	{
425	rtR0MemObjDelete(&pMemNetBSD->Core);
426	return VERR_NO_MEMORY;
427	}
428
429	pMemNetBSD->Core.u.ResVirt.R0Process = NIL_RTR0PROCESS;
430	pMemNetBSD->Core.pv = (void *)virt;
431	*ppMem = &pMemNetBSD->Core;
432	return VINF_SUCCESS;
433	}
434
435
436	DECLHIDDEN(int) rtR0MemObjNativeReserveUser(PPRTR0MEMOBJINTERNAL ppMem, RTR3PTR R3PtrFixed, size_t cb, size_t uAlignment,
437	RTR0PROCESS R0Process, const char *pszTag)
438	{
439	RT_NOREF(ppMem, R3PtrFixed, cb, uAlignment, R0Process, pszTag);
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, const char *pszTag)
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, pszTag);
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, const char *pszTag)
509	{
510	RT_NOREF(ppMem, pMemToMap, R3PtrFixed, uAlignment, fProt, R0Process, offSub, cbSub, pszTag);
511	printf("NativeMapUser\n");
512	return VERR_NOT_SUPPORTED;
513	}
514
515
516	DECLHIDDEN(int) rtR0MemObjNativeProtect(PRTR0MEMOBJINTERNAL pMem, size_t offSub, size_t cbSub, uint32_t fProt)
517	{
518	vm_prot_t ProtectionFlags = 0;
519	vaddr_t AddrStart = (vaddr_t)pMem->pv + offSub;
520	vm_map_t pVmMap = rtR0MemObjNetBSDGetMap(pMem);
521
522	if (!pVmMap)
523	return VERR_NOT_SUPPORTED;
524
525	if ((fProt & RTMEM_PROT_READ) == RTMEM_PROT_READ)
526	ProtectionFlags \|= UVM_PROT_R;
527	if ((fProt & RTMEM_PROT_WRITE) == RTMEM_PROT_WRITE)
528	ProtectionFlags \|= UVM_PROT_W;
529	if ((fProt & RTMEM_PROT_EXEC) == RTMEM_PROT_EXEC)
530	ProtectionFlags \|= UVM_PROT_X;
531
532	int error = uvm_map_protect(pVmMap, AddrStart, AddrStart + cbSub,
533	ProtectionFlags, 0);
534	if (!error)
535	return VINF_SUCCESS;
536
537	return VERR_NOT_SUPPORTED;
538	}
539
540
541	DECLHIDDEN(RTHCPHYS) rtR0MemObjNativeGetPagePhysAddr(PRTR0MEMOBJINTERNAL pMem, size_t iPage)
542	{
543	PRTR0MEMOBJNETBSD pMemNetBSD = (PRTR0MEMOBJNETBSD)pMem;
544
545	switch (pMemNetBSD->Core.enmType)
546	{
547	case RTR0MEMOBJTYPE_PAGE:
548	case RTR0MEMOBJTYPE_LOW:
549	{
550	vaddr_t va = (vaddr_t)pMemNetBSD->Core.pv + ptoa(iPage);
551	paddr_t pa = 0;
552	pmap_extract(pmap_kernel(), va, &pa);
553	return pa;
554	}
555	case RTR0MEMOBJTYPE_CONT:
556	return pMemNetBSD->Core.u.Cont.Phys + ptoa(iPage);
557	case RTR0MEMOBJTYPE_PHYS:
558	return pMemNetBSD->Core.u.Phys.PhysBase + ptoa(iPage);
559	case RTR0MEMOBJTYPE_PHYS_NC:
560	{
561	struct vm_page *page;
562	size_t i = 0;
563	TAILQ_FOREACH(page, &pMemNetBSD->pglist, pageq.queue)
564	{
565	if (i == iPage)
566	break;
567	i++;
568	}
569	return VM_PAGE_TO_PHYS(page);
570	}
571	case RTR0MEMOBJTYPE_LOCK:
572	case RTR0MEMOBJTYPE_MAPPING:
573	{
574	pmap_t pmap;
575	if (pMem->u.Lock.R0Process == NIL_RTR0PROCESS)
576	pmap = pmap_kernel();
577	else
578	pmap = ((struct proc *)pMem->u.Lock.R0Process)->p_vmspace->vm_map.pmap;
579	vaddr_t va = (vaddr_t)pMemNetBSD->Core.pv + ptoa(iPage);
580	paddr_t pa = 0;
581	pmap_extract(pmap, va, &pa);
582	return pa;
583	}
584	case RTR0MEMOBJTYPE_RES_VIRT:
585	return NIL_RTHCPHYS;
586	default:
587	return NIL_RTHCPHYS;
588	}
589	}
590

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

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