VirtualBox

source: vbox/trunk/src/VBox/VMM/VMMAll/MMAllPagePool.cpp@ 18215

Last change on this file since 18215 was 14157, checked in by vboxsync, 16 years ago

mac build fixes.

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File size: 7.5 KB
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1/* $Id: MMAllPagePool.cpp 14157 2008-11-13 02:50:46Z vboxsync $ */
2/** @file
3 * MM - Memory Manager - Page Pool.
4 *
5 * @remarks This file is NOT built for the raw-mode context.
6 */
7
8/*
9 * Copyright (C) 2006-2007 Sun Microsystems, Inc.
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 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
20 * Clara, CA 95054 USA or visit http://www.sun.com if you need
21 * additional information or have any questions.
22 */
23
24/*******************************************************************************
25* Header Files *
26*******************************************************************************/
27#define LOG_GROUP LOG_GROUP_MM_POOL
28#include <VBox/mm.h>
29#include <VBox/pgm.h>
30#include <VBox/stam.h>
31#include "MMInternal.h"
32#include <VBox/vm.h>
33#include <VBox/param.h>
34#include <VBox/err.h>
35#include <VBox/log.h>
36#include <iprt/alloc.h>
37#include <iprt/assert.h>
38#include <iprt/string.h>
39#define USE_INLINE_ASM_BIT_OPS
40#ifdef USE_INLINE_ASM_BIT_OPS
41# include <iprt/asm.h>
42#endif
43
44
45#ifndef VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0
46
47/**
48 * Converts a pool physical address to a linear address.
49 * The specified allocation type must match with the address.
50 *
51 * @returns Physical address.
52 * @returns NULL if not found or eType is not matching.
53 * @param pPool Pointer to the page pool.
54 * @param HCPhys The address to convert.
55 * @thread The Emulation Thread.
56 */
57void *mmPagePoolPhys2Ptr(PMMPAGEPOOL pPool, RTHCPHYS HCPhys)
58{
59#if 0 /** @todo have to fix the debugger, but until then this is going on my nerves. */
60#ifdef IN_RING3
61 VM_ASSERT_EMT(pPool->pVM);
62#endif
63#endif
64
65 /*
66 * Lookup the virtual address.
67 */
68 PMMPPLOOKUPHCPHYS pLookup = (PMMPPLOOKUPHCPHYS)RTAvlHCPhysGet(&pPool->pLookupPhys, HCPhys & X86_PTE_PAE_PG_MASK);
69 if (pLookup)
70 {
71 STAM_COUNTER_INC(&pPool->cToVirtCalls);
72 PSUPPAGE pPhysPage = pLookup->pPhysPage;
73 PMMPAGESUBPOOL pSubPool = (PMMPAGESUBPOOL)pPhysPage->uReserved;
74 unsigned iPage = pPhysPage - pSubPool->paPhysPages;
75 return (char *)pSubPool->pvPages + (HCPhys & PAGE_OFFSET_MASK) + (iPage << PAGE_SHIFT);
76 }
77 return NULL;
78}
79
80
81/**
82 * Convert physical address of a page to a HC virtual address.
83 * This works for pages allocated by MMR3PageAlloc(), MMR3PageAllocPhys()
84 * and MMR3PageAllocLow().
85 *
86 * @returns VBox status code.
87 * @param pVM VM handle.
88 * @param HCPhysPage The physical address of a page.
89 * @param ppvPage Where to store the address corresponding to HCPhysPage.
90 * @thread The Emulation Thread.
91 */
92VMMDECL(int) MMPagePhys2PageEx(PVM pVM, RTHCPHYS HCPhysPage, void **ppvPage)
93{
94 void *pvPage = mmPagePoolPhys2Ptr(pVM->mm.s.CTX_SUFF(pPagePool), HCPhysPage);
95 if (!pvPage)
96 {
97 pvPage = mmPagePoolPhys2Ptr(pVM->mm.s.CTX_SUFF(pPagePoolLow), HCPhysPage);
98 if (!pvPage)
99 {
100 STAM_COUNTER_INC(&pVM->mm.s.CTX_SUFF(pPagePool)->cErrors);
101 AssertMsg(pvPage, ("Invalid HCPhysPage=%RHp specified\n", HCPhysPage));
102 return VERR_INVALID_POINTER;
103 }
104 }
105 *ppvPage = pvPage;
106 return VINF_SUCCESS;
107}
108
109#endif /* !VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0 */
110#ifdef IN_RING3
111
112/**
113 * Convert physical address of a page to a HC virtual address.
114 * This works for pages allocated by MMR3PageAlloc(), MMR3PageAllocPhys()
115 * and MMR3PageAllocLow().
116 *
117 * @returns Pointer to the page at that physical address.
118 * @param pVM VM handle.
119 * @param HCPhysPage The physical address of a page.
120 * @thread The Emulation Thread.
121 */
122VMMDECL(void *) MMPagePhys2Page(PVM pVM, RTHCPHYS HCPhysPage)
123{
124 void *pvPage = mmPagePoolPhys2Ptr(pVM->mm.s.CTX_SUFF(pPagePool), HCPhysPage);
125 if (!pvPage)
126 {
127 pvPage = mmPagePoolPhys2Ptr(pVM->mm.s.CTX_SUFF(pPagePoolLow), HCPhysPage);
128 if (!pvPage)
129 {
130 STAM_COUNTER_INC(&pVM->mm.s.CTX_SUFF(pPagePool)->cErrors);
131 AssertMsg(pvPage, ("Invalid HCPhysPage=%RHp specified\n", HCPhysPage));
132 }
133 }
134 return pvPage;
135}
136
137
138/**
139 * Try convert physical address of a page to a HC virtual address.
140 * This works for pages allocated by MMR3PageAlloc(), MMR3PageAllocPhys()
141 * and MMR3PageAllocLow().
142 *
143 * @returns VBox status code.
144 * @param pVM VM handle.
145 * @param HCPhysPage The physical address of a page.
146 * @param ppvPage Where to store the address corresponding to HCPhysPage.
147 * @thread The Emulation Thread.
148 */
149VMMDECL(int) MMPagePhys2PageTry(PVM pVM, RTHCPHYS HCPhysPage, void **ppvPage)
150{
151 void *pvPage = mmPagePoolPhys2Ptr(pVM->mm.s.CTX_SUFF(pPagePool), HCPhysPage);
152 if (!pvPage)
153 {
154 pvPage = mmPagePoolPhys2Ptr(pVM->mm.s.CTX_SUFF(pPagePoolLow), HCPhysPage);
155 if (!pvPage)
156 return VERR_INVALID_POINTER;
157 }
158 *ppvPage = pvPage;
159 return VINF_SUCCESS;
160}
161
162
163/**
164 * Converts a pool address to a physical address.
165 * The specified allocation type must match with the address.
166 *
167 * @returns Physical address.
168 * @returns NIL_RTHCPHYS if not found or eType is not matching.
169 * @param pPool Pointer to the page pool.
170 * @param pv The address to convert.
171 * @thread The Emulation Thread.
172 */
173RTHCPHYS mmPagePoolPtr2Phys(PMMPAGEPOOL pPool, void *pv)
174{
175#ifdef IN_RING3
176 VM_ASSERT_EMT(pPool->pVM);
177#endif
178 /*
179 * Lookup the virtual address.
180 */
181 PMMPPLOOKUPHCPTR pLookup = (PMMPPLOOKUPHCPTR)RTAvlPVGetBestFit(&pPool->pLookupVirt, pv, false);
182 if (pLookup)
183 {
184 unsigned iPage = ((char *)pv - (char *)pLookup->pSubPool->pvPages) >> PAGE_SHIFT;
185 if (iPage < pLookup->pSubPool->cPages)
186 {
187 /*
188 * Convert the virtual address to a physical address.
189 */
190 STAM_COUNTER_INC(&pPool->cToPhysCalls);
191 AssertMsg( pLookup->pSubPool->paPhysPages[iPage].Phys
192 && !(pLookup->pSubPool->paPhysPages[iPage].Phys & PAGE_OFFSET_MASK),
193 ("Phys=%#x\n", pLookup->pSubPool->paPhysPages[iPage].Phys));
194 AssertMsg((uintptr_t)pLookup->pSubPool == pLookup->pSubPool->paPhysPages[iPage].uReserved,
195 ("pSubPool=%p uReserved=%p\n", pLookup->pSubPool, pLookup->pSubPool->paPhysPages[iPage].uReserved));
196 return pLookup->pSubPool->paPhysPages[iPage].Phys + ((uintptr_t)pv & PAGE_OFFSET_MASK);
197 }
198 }
199 return NIL_RTHCPHYS;
200}
201
202
203/**
204 * Convert a page in the page pool to a HC physical address.
205 * This works for pages allocated by MMR3PageAlloc(), MMR3PageAllocPhys()
206 * and MMR3PageAllocLow().
207 *
208 * @returns Physical address for the specified page table.
209 * @param pVM VM handle.
210 * @param pvPage Page which physical address we query.
211 * @thread The Emulation Thread.
212 */
213VMMDECL(RTHCPHYS) MMPage2Phys(PVM pVM, void *pvPage)
214{
215 RTHCPHYS HCPhys = mmPagePoolPtr2Phys(pVM->mm.s.CTX_SUFF(pPagePool), pvPage);
216 if (HCPhys == NIL_RTHCPHYS)
217 {
218 HCPhys = mmPagePoolPtr2Phys(pVM->mm.s.CTX_SUFF(pPagePoolLow), pvPage);
219 if (HCPhys == NIL_RTHCPHYS)
220 {
221 STAM_COUNTER_INC(&pVM->mm.s.CTX_SUFF(pPagePool)->cErrors);
222 AssertMsgFailed(("Invalid pvPage=%p specified\n", pvPage));
223 }
224 }
225 return HCPhys;
226}
227
228
229#endif /* IN_RING3 */
230
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