1 | /* $Id: memobj-r0drv-os2.cpp 14824 2008-11-30 07:52:59Z vboxsync $ */
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2 | /** @file
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3 | * IPRT - Ring-0 Memory Objects, OS/2.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (c) 2007 knut st. osmundsen <bird-src-spam@anduin.net>
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8 | *
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9 | * Permission is hereby granted, free of charge, to any person
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10 | * obtaining a copy of this software and associated documentation
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11 | * files (the "Software"), to deal in the Software without
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12 | * restriction, including without limitation the rights to use,
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13 | * copy, modify, merge, publish, distribute, sublicense, and/or sell
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14 | * copies of the Software, and to permit persons to whom the
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15 | * Software is furnished to do so, subject to the following
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16 | * conditions:
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17 | *
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18 | * The above copyright notice and this permission notice shall be
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19 | * included in all copies or substantial portions of the Software.
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20 | *
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21 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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22 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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23 | * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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24 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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25 | * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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26 | * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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27 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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28 | * OTHER DEALINGS IN THE SOFTWARE.
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29 | */
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30 |
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31 |
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32 | /*******************************************************************************
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33 | * Header Files *
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34 | *******************************************************************************/
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35 | #include "the-os2-kernel.h"
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36 |
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37 | #include <iprt/memobj.h>
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38 | #include <iprt/mem.h>
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39 | #include <iprt/err.h>
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40 | #include <iprt/assert.h>
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41 | #include <iprt/log.h>
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42 | #include <iprt/param.h>
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43 | #include <iprt/process.h>
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44 | #include "internal/memobj.h"
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45 |
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46 |
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47 | /*******************************************************************************
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48 | * Structures and Typedefs *
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49 | *******************************************************************************/
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50 | /**
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51 | * The OS/2 version of the memory object structure.
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52 | */
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53 | typedef struct RTR0MEMOBJDARWIN
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54 | {
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55 | /** The core structure. */
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56 | RTR0MEMOBJINTERNAL Core;
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57 | /** Lock for the ring-3 / ring-0 pinned objectes.
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58 | * This member might not be allocated for some object types. */
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59 | KernVMLock_t Lock;
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60 | /** Array of physical pages.
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61 | * This array can be 0 in length for some object types. */
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62 | KernPageList_t aPages[1];
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63 | } RTR0MEMOBJOS2, *PRTR0MEMOBJOS2;
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64 |
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65 |
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66 | /*******************************************************************************
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67 | * Internal Functions *
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68 | *******************************************************************************/
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69 | static void rtR0MemObjFixPageList(KernPageList_t *paPages, ULONG cPages, ULONG cPagesRet);
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70 |
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71 |
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72 | int rtR0MemObjNativeFree(RTR0MEMOBJ pMem)
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73 | {
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74 | PRTR0MEMOBJOS2 pMemOs2 = (PRTR0MEMOBJOS2)pMem;
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75 | int rc;
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76 |
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77 | switch (pMemOs2->Core.enmType)
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78 | {
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79 | case RTR0MEMOBJTYPE_PHYS_NC:
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80 | AssertMsgFailed(("RTR0MEMOBJTYPE_PHYS_NC\n"));
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81 | return VERR_INTERNAL_ERROR;
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82 | break;
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83 |
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84 | case RTR0MEMOBJTYPE_PHYS:
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85 | if (!pMemOs2->Core.pv)
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86 | break;
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87 |
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88 | case RTR0MEMOBJTYPE_MAPPING:
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89 | if (pMemOs2->Core.u.Mapping.R0Process == NIL_RTR0PROCESS)
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90 | break;
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91 |
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92 | /* fall thru */
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93 | case RTR0MEMOBJTYPE_PAGE:
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94 | case RTR0MEMOBJTYPE_LOW:
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95 | case RTR0MEMOBJTYPE_CONT:
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96 | rc = KernVMFree(pMemOs2->Core.pv);
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97 | AssertMsg(!rc, ("rc=%d type=%d pv=%p cb=%#zx\n", rc, pMemOs2->Core.enmType, pMemOs2->Core.pv, pMemOs2->Core.cb));
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98 | break;
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99 |
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100 | case RTR0MEMOBJTYPE_LOCK:
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101 | rc = KernVMUnlock(&pMemOs2->Lock);
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102 | AssertMsg(!rc, ("rc=%d\n", rc));
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103 | break;
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104 |
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105 | case RTR0MEMOBJTYPE_RES_VIRT:
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106 | default:
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107 | AssertMsgFailed(("enmType=%d\n", pMemOs2->Core.enmType));
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108 | return VERR_INTERNAL_ERROR;
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109 | }
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110 |
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111 | return VINF_SUCCESS;
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112 | }
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113 |
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114 |
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115 | int rtR0MemObjNativeAllocPage(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, bool fExecutable)
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116 | {
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117 | NOREF(fExecutable);
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118 |
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119 | /* create the object. */
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120 | const ULONG cPages = cb >> PAGE_SHIFT;
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121 | PRTR0MEMOBJOS2 pMemOs2 = (PRTR0MEMOBJOS2)rtR0MemObjNew(RT_OFFSETOF(RTR0MEMOBJOS2, aPages[cPages]), RTR0MEMOBJTYPE_PAGE, NULL, cb);
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122 | if (!pMemOs2)
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123 | return VERR_NO_MEMORY;
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124 |
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125 | /* do the allocation. */
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126 | int rc = KernVMAlloc(cb, VMDHA_FIXED, &pMemOs2->Core.pv, (PPVOID)-1, NULL);
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127 | if (!rc)
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128 | {
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129 | ULONG cPagesRet = cPages;
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130 | rc = KernLinToPageList(pMemOs2->Core.pv, cb, &pMemOs2->aPages[0], &cPagesRet);
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131 | if (!rc)
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132 | {
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133 | rtR0MemObjFixPageList(&pMemOs2->aPages[0], cPages, cPagesRet);
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134 | *ppMem = &pMemOs2->Core;
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135 | return VINF_SUCCESS;
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136 | }
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137 | KernVMFree(pMemOs2->Core.pv);
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138 | }
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139 | rtR0MemObjDelete(&pMemOs2->Core);
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140 | return RTErrConvertFromOS2(rc);
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141 | }
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142 |
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143 |
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144 | int rtR0MemObjNativeAllocLow(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, bool fExecutable)
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145 | {
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146 | NOREF(fExecutable);
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147 |
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148 | /* create the object. */
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149 | const ULONG cPages = cb >> PAGE_SHIFT;
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150 | PRTR0MEMOBJOS2 pMemOs2 = (PRTR0MEMOBJOS2)rtR0MemObjNew(RT_OFFSETOF(RTR0MEMOBJOS2, aPages[cPages]), RTR0MEMOBJTYPE_LOW, NULL, cb);
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151 | if (!pMemOs2)
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152 | return VERR_NO_MEMORY;
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153 |
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154 | /* do the allocation. */
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155 | int rc = KernVMAlloc(cb, VMDHA_FIXED, &pMemOs2->Core.pv, (PPVOID)-1, NULL);
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156 | if (!rc)
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157 | {
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158 | ULONG cPagesRet = cPages;
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159 | rc = KernLinToPageList(pMemOs2->Core.pv, cb, &pMemOs2->aPages[0], &cPagesRet);
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160 | if (!rc)
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161 | {
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162 | rtR0MemObjFixPageList(&pMemOs2->aPages[0], cPages, cPagesRet);
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163 | *ppMem = &pMemOs2->Core;
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164 | return VINF_SUCCESS;
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165 | }
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166 | KernVMFree(pMemOs2->Core.pv);
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167 | }
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168 | rtR0MemObjDelete(&pMemOs2->Core);
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169 | return RTErrConvertFromOS2(rc);
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170 | }
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171 |
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172 |
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173 | int rtR0MemObjNativeAllocCont(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, bool fExecutable)
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174 | {
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175 | NOREF(fExecutable);
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176 |
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177 | /* create the object. */
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178 | PRTR0MEMOBJOS2 pMemOs2 = (PRTR0MEMOBJOS2)rtR0MemObjNew(RT_OFFSETOF(RTR0MEMOBJOS2, Lock), RTR0MEMOBJTYPE_CONT, NULL, cb);
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179 | if (!pMemOs2)
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180 | return VERR_NO_MEMORY;
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181 |
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182 | /* do the allocation. */
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183 | ULONG ulPhys = ~0UL;
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184 | int rc = KernVMAlloc(cb, VMDHA_FIXED | VMDHA_CONTIG, &pMemOs2->Core.pv, (PPVOID)&ulPhys, NULL);
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185 | if (!rc)
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186 | {
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187 | Assert(ulPhys != ~0UL);
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188 | pMemOs2->Core.u.Cont.Phys = ulPhys;
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189 | *ppMem = &pMemOs2->Core;
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190 | return VINF_SUCCESS;
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191 | }
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192 | rtR0MemObjDelete(&pMemOs2->Core);
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193 | return RTErrConvertFromOS2(rc);
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194 | }
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195 |
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196 |
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197 | int rtR0MemObjNativeAllocPhys(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, RTHCPHYS PhysHighest)
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198 | {
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199 | AssertMsgReturn(PhysHighest >= 16 *_1M, ("PhysHigest=%RHp\n", PhysHighest), VERR_NOT_IMPLEMENTED);
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200 |
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201 | /* create the object. */
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202 | PRTR0MEMOBJOS2 pMemOs2 = (PRTR0MEMOBJOS2)rtR0MemObjNew(RT_OFFSETOF(RTR0MEMOBJOS2, Lock), RTR0MEMOBJTYPE_PHYS, NULL, cb);
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203 | if (!pMemOs2)
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204 | return VERR_NO_MEMORY;
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205 |
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206 | /* do the allocation. */
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207 | ULONG ulPhys = ~0UL;
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208 | int rc = KernVMAlloc(cb, VMDHA_FIXED | VMDHA_CONTIG | (PhysHighest < _4G ? VMDHA_16M : 0), &pMemOs2->Core.pv, (PPVOID)&ulPhys, NULL);
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209 | if (!rc)
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210 | {
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211 | Assert(ulPhys != ~0UL);
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212 | pMemOs2->Core.u.Phys.fAllocated = true;
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213 | pMemOs2->Core.u.Phys.PhysBase = ulPhys;
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214 | *ppMem = &pMemOs2->Core;
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215 | return VINF_SUCCESS;
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216 | }
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217 | rtR0MemObjDelete(&pMemOs2->Core);
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218 | return RTErrConvertFromOS2(rc);
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219 | }
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220 |
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221 |
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222 | int rtR0MemObjNativeAllocPhysNC(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, RTHCPHYS PhysHighest)
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223 | {
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224 | /** @todo rtR0MemObjNativeAllocPhys / darwin. */
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225 | return rtR0MemObjNativeAllocPhys(ppMem, cb, PhysHighest);
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226 | }
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227 |
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228 |
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229 | int rtR0MemObjNativeEnterPhys(PPRTR0MEMOBJINTERNAL ppMem, RTHCPHYS Phys, size_t cb)
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230 | {
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231 | /* create the object. */
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232 | PRTR0MEMOBJOS2 pMemOs2 = (PRTR0MEMOBJOS2)rtR0MemObjNew(RT_OFFSETOF(RTR0MEMOBJOS2, Lock), RTR0MEMOBJTYPE_PHYS, NULL, cb);
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233 | if (!pMemOs2)
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234 | return VERR_NO_MEMORY;
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235 |
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236 | /* there is no allocation here, right? it needs to be mapped somewhere first. */
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237 | pMemOs2->Core.u.Phys.fAllocated = false;
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238 | pMemOs2->Core.u.Phys.PhysBase = Phys;
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239 | *ppMem = &pMemOs2->Core;
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240 | return VINF_SUCCESS;
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241 | }
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242 |
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243 |
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244 | int rtR0MemObjNativeLockUser(PPRTR0MEMOBJINTERNAL ppMem, RTR3PTR R3Ptr, size_t cb, RTR0PROCESS R0Process)
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245 | {
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246 | AssertMsgReturn(R0Process == RTR0ProcHandleSelf(), ("%p != %p\n", R0Process, RTR0ProcHandleSelf()), VERR_NOT_SUPPORTED);
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247 |
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248 | /* create the object. */
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249 | const ULONG cPages = cb >> PAGE_SHIFT;
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250 | PRTR0MEMOBJOS2 pMemOs2 = (PRTR0MEMOBJOS2)rtR0MemObjNew(RT_OFFSETOF(RTR0MEMOBJOS2, aPages[cPages]), RTR0MEMOBJTYPE_LOCK, (void *)R3Ptr, cb);
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251 | if (!pMemOs2)
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252 | return VERR_NO_MEMORY;
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253 |
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254 | /* lock it. */
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255 | ULONG cPagesRet = cPages;
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256 | int rc = KernVMLock(VMDHL_LONG | VMDHL_WRITE, (void *)R3Ptr, cb, &pMemOs2->Lock, &pMemOs2->aPages[0], &cPagesRet);
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257 | if (!rc)
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258 | {
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259 | rtR0MemObjFixPageList(&pMemOs2->aPages[0], cPages, cPagesRet);
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260 | Assert(cb == pMemOs2->Core.cb);
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261 | Assert(R3Ptr == (RTR3PTR)pMemOs2->Core.pv);
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262 | pMemOs2->Core.u.Lock.R0Process = R0Process;
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263 | *ppMem = &pMemOs2->Core;
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264 | return VINF_SUCCESS;
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265 | }
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266 | rtR0MemObjDelete(&pMemOs2->Core);
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267 | return RTErrConvertFromOS2(rc);
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268 | }
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269 |
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270 |
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271 | int rtR0MemObjNativeLockKernel(PPRTR0MEMOBJINTERNAL ppMem, void *pv, size_t cb)
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272 | {
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273 | /* create the object. */
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274 | const ULONG cPages = cb >> PAGE_SHIFT;
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275 | PRTR0MEMOBJOS2 pMemOs2 = (PRTR0MEMOBJOS2)rtR0MemObjNew(RT_OFFSETOF(RTR0MEMOBJOS2, aPages[cPages]), RTR0MEMOBJTYPE_LOCK, pv, cb);
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276 | if (!pMemOs2)
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277 | return VERR_NO_MEMORY;
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278 |
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279 | /* lock it. */
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280 | ULONG cPagesRet = cPages;
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281 | int rc = KernVMLock(VMDHL_LONG | VMDHL_WRITE, pv, cb, &pMemOs2->Lock, &pMemOs2->aPages[0], &cPagesRet);
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282 | if (!rc)
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283 | {
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284 | rtR0MemObjFixPageList(&pMemOs2->aPages[0], cPages, cPagesRet);
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285 | pMemOs2->Core.u.Lock.R0Process = NIL_RTR0PROCESS;
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286 | *ppMem = &pMemOs2->Core;
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287 | return VINF_SUCCESS;
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288 | }
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289 | rtR0MemObjDelete(&pMemOs2->Core);
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290 | return RTErrConvertFromOS2(rc);
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291 | }
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292 |
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293 |
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294 | int rtR0MemObjNativeReserveKernel(PPRTR0MEMOBJINTERNAL ppMem, void *pvFixed, size_t cb, size_t uAlignment)
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295 | {
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296 | return VERR_NOT_IMPLEMENTED;
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297 | }
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298 |
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299 |
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300 | int rtR0MemObjNativeReserveUser(PPRTR0MEMOBJINTERNAL ppMem, RTR3PTR R3PtrFixed, size_t cb, size_t uAlignment, RTR0PROCESS R0Process)
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301 | {
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302 | return VERR_NOT_IMPLEMENTED;
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303 | }
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304 |
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305 |
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306 | int rtR0MemObjNativeMapKernel(PPRTR0MEMOBJINTERNAL ppMem, RTR0MEMOBJ pMemToMap, void *pvFixed, size_t uAlignment,
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307 | unsigned fProt, size_t offSub, size_t cbSub)
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308 | {
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309 | AssertMsgReturn(!offSub && !cbSub, ("%#x %#x\n", offSub, cbSub), VERR_NOT_SUPPORTED);
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310 | AssertMsgReturn(pvFixed == (void *)-1, ("%p\n", pvFixed), VERR_NOT_SUPPORTED);
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311 |
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312 | /** @todo finish the implementation. */
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313 |
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314 | int rc;
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315 | void *pvR0 = NULL;
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316 | PRTR0MEMOBJOS2 pMemToMapOs2 = (PRTR0MEMOBJOS2)pMemToMap;
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317 | switch (pMemToMapOs2->Core.enmType)
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318 | {
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319 | /*
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320 | * These has kernel mappings.
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321 | */
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322 | case RTR0MEMOBJTYPE_PAGE:
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323 | case RTR0MEMOBJTYPE_LOW:
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324 | case RTR0MEMOBJTYPE_CONT:
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325 | pvR0 = pMemToMapOs2->Core.pv;
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326 | break;
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327 |
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328 | case RTR0MEMOBJTYPE_PHYS:
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329 | pvR0 = pMemToMapOs2->Core.pv;
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330 | if (!pvR0)
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331 | {
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332 | /* no ring-0 mapping, so allocate a mapping in the process. */
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333 | AssertMsgReturn(uAlignment == PAGE_SIZE, ("%#zx\n", uAlignment), VERR_NOT_SUPPORTED);
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334 | AssertMsgReturn(fProt & RTMEM_PROT_WRITE, ("%#x\n", fProt), VERR_NOT_SUPPORTED);
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335 | Assert(!pMemToMapOs2->Core.u.Phys.fAllocated);
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336 | ULONG ulPhys = pMemToMapOs2->Core.u.Phys.PhysBase;
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337 | rc = KernVMAlloc(pMemToMapOs2->Core.cb, VMDHA_PHYS, &pvR0, (PPVOID)&ulPhys, NULL);
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338 | if (rc)
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339 | return RTErrConvertFromOS2(rc);
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340 | pMemToMapOs2->Core.pv = pvR0;
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341 | }
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342 | break;
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343 |
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344 | case RTR0MEMOBJTYPE_PHYS_NC:
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345 | AssertMsgFailed(("RTR0MEMOBJTYPE_PHYS_NC\n"));
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346 | return VERR_NOT_IMPLEMENTED;
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347 | break;
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348 |
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349 | case RTR0MEMOBJTYPE_LOCK:
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350 | if (pMemToMapOs2->Core.u.Lock.R0Process != NIL_RTR0PROCESS)
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351 | return VERR_NOT_SUPPORTED; /** @todo implement this... */
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352 | pvR0 = pMemToMapOs2->Core.pv;
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353 | break;
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354 |
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355 | case RTR0MEMOBJTYPE_RES_VIRT:
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356 | case RTR0MEMOBJTYPE_MAPPING:
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357 | default:
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358 | AssertMsgFailed(("enmType=%d\n", pMemToMapOs2->Core.enmType));
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359 | return VERR_INTERNAL_ERROR;
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360 | }
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361 |
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362 | /*
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363 | * Create a dummy mapping object for it.
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364 | *
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365 | * All mappings are read/write/execute in OS/2 and there isn't
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366 | * any cache options, so sharing is ok. And the main memory object
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367 | * isn't actually freed until all the mappings have been freed up
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368 | * (reference counting).
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369 | */
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370 | PRTR0MEMOBJOS2 pMemOs2 = (PRTR0MEMOBJOS2)rtR0MemObjNew(RT_OFFSETOF(RTR0MEMOBJOS2, Lock), RTR0MEMOBJTYPE_MAPPING, pvR0, pMemToMapOs2->Core.cb);
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371 | if (pMemOs2)
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372 | {
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373 | pMemOs2->Core.u.Mapping.R0Process = NIL_RTR0PROCESS;
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374 | *ppMem = &pMemOs2->Core;
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375 | return VINF_SUCCESS;
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376 | }
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377 | return VERR_NO_MEMORY;
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378 | }
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379 |
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380 |
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381 | int rtR0MemObjNativeMapUser(PPRTR0MEMOBJINTERNAL ppMem, RTR0MEMOBJ pMemToMap, RTR3PTR R3PtrFixed, size_t uAlignment, unsigned fProt, RTR0PROCESS R0Process)
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382 | {
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383 | AssertMsgReturn(R0Process == RTR0ProcHandleSelf(), ("%p != %p\n", R0Process, RTR0ProcHandleSelf()), VERR_NOT_SUPPORTED);
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384 | AssertMsgReturn(R3PtrFixed == (RTR3PTR)-1, ("%p\n", R3PtrFixed), VERR_NOT_SUPPORTED);
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385 |
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386 | int rc;
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387 | void *pvR0;
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388 | void *pvR3 = NULL;
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389 | PRTR0MEMOBJOS2 pMemToMapOs2 = (PRTR0MEMOBJOS2)pMemToMap;
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390 | switch (pMemToMapOs2->Core.enmType)
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391 | {
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392 | /*
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393 | * These has kernel mappings.
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394 | */
|
---|
395 | case RTR0MEMOBJTYPE_PAGE:
|
---|
396 | case RTR0MEMOBJTYPE_LOW:
|
---|
397 | case RTR0MEMOBJTYPE_CONT:
|
---|
398 | pvR0 = pMemToMapOs2->Core.pv;
|
---|
399 | break;
|
---|
400 |
|
---|
401 | case RTR0MEMOBJTYPE_PHYS:
|
---|
402 | pvR0 = pMemToMapOs2->Core.pv;
|
---|
403 | #if 0/* this is wrong. */
|
---|
404 | if (!pvR0)
|
---|
405 | {
|
---|
406 | /* no ring-0 mapping, so allocate a mapping in the process. */
|
---|
407 | AssertMsgReturn(uAlignment == PAGE_SIZE, ("%#zx\n", uAlignment), VERR_NOT_SUPPORTED);
|
---|
408 | AssertMsgReturn(fProt & RTMEM_PROT_WRITE, ("%#x\n", fProt), VERR_NOT_SUPPORTED);
|
---|
409 | Assert(!pMemToMapOs2->Core.u.Phys.fAllocated);
|
---|
410 | ULONG ulPhys = pMemToMapOs2->Core.u.Phys.PhysBase;
|
---|
411 | rc = KernVMAlloc(pMemToMapOs2->Core.cb, VMDHA_PHYS | VMDHA_PROCESS, &pvR3, (PPVOID)&ulPhys, NULL);
|
---|
412 | if (rc)
|
---|
413 | return RTErrConvertFromOS2(rc);
|
---|
414 | }
|
---|
415 | break;
|
---|
416 | #endif
|
---|
417 | return VERR_NOT_SUPPORTED;
|
---|
418 |
|
---|
419 | case RTR0MEMOBJTYPE_PHYS_NC:
|
---|
420 | AssertMsgFailed(("RTR0MEMOBJTYPE_PHYS_NC\n"));
|
---|
421 | return VERR_NOT_IMPLEMENTED;
|
---|
422 | break;
|
---|
423 |
|
---|
424 | case RTR0MEMOBJTYPE_LOCK:
|
---|
425 | if (pMemToMapOs2->Core.u.Lock.R0Process != NIL_RTR0PROCESS)
|
---|
426 | return VERR_NOT_SUPPORTED; /** @todo implement this... */
|
---|
427 | pvR0 = pMemToMapOs2->Core.pv;
|
---|
428 | break;
|
---|
429 |
|
---|
430 | case RTR0MEMOBJTYPE_RES_VIRT:
|
---|
431 | case RTR0MEMOBJTYPE_MAPPING:
|
---|
432 | default:
|
---|
433 | AssertMsgFailed(("enmType=%d\n", pMemToMapOs2->Core.enmType));
|
---|
434 | return VERR_INTERNAL_ERROR;
|
---|
435 | }
|
---|
436 |
|
---|
437 | /*
|
---|
438 | * Map the ring-0 memory into the current process.
|
---|
439 | */
|
---|
440 | if (!pvR3)
|
---|
441 | {
|
---|
442 | Assert(pvR0);
|
---|
443 | ULONG flFlags = 0;
|
---|
444 | if (uAlignment == PAGE_SIZE)
|
---|
445 | flFlags |= VMDHGP_4MB;
|
---|
446 | if (fProt & RTMEM_PROT_WRITE)
|
---|
447 | flFlags |= VMDHGP_WRITE;
|
---|
448 | rc = RTR0Os2DHVMGlobalToProcess(flFlags, pvR0, pMemToMapOs2->Core.cb, &pvR3);
|
---|
449 | if (rc)
|
---|
450 | return RTErrConvertFromOS2(rc);
|
---|
451 | }
|
---|
452 | Assert(pvR3);
|
---|
453 |
|
---|
454 | /*
|
---|
455 | * Create a mapping object for it.
|
---|
456 | */
|
---|
457 | PRTR0MEMOBJOS2 pMemOs2 = (PRTR0MEMOBJOS2)rtR0MemObjNew(RT_OFFSETOF(RTR0MEMOBJOS2, Lock), RTR0MEMOBJTYPE_MAPPING, pvR3, pMemToMapOs2->Core.cb);
|
---|
458 | if (pMemOs2)
|
---|
459 | {
|
---|
460 | Assert(pMemOs2->Core.pv == pvR3);
|
---|
461 | pMemOs2->Core.u.Mapping.R0Process = R0Process;
|
---|
462 | *ppMem = &pMemOs2->Core;
|
---|
463 | return VINF_SUCCESS;
|
---|
464 | }
|
---|
465 | KernVMFree(pvR3);
|
---|
466 | return VERR_NO_MEMORY;
|
---|
467 | }
|
---|
468 |
|
---|
469 |
|
---|
470 | RTHCPHYS rtR0MemObjNativeGetPagePhysAddr(PRTR0MEMOBJINTERNAL pMem, size_t iPage)
|
---|
471 | {
|
---|
472 | PRTR0MEMOBJOS2 pMemOs2 = (PRTR0MEMOBJOS2)pMem;
|
---|
473 |
|
---|
474 | switch (pMemOs2->Core.enmType)
|
---|
475 | {
|
---|
476 | case RTR0MEMOBJTYPE_PAGE:
|
---|
477 | case RTR0MEMOBJTYPE_LOW:
|
---|
478 | case RTR0MEMOBJTYPE_LOCK:
|
---|
479 | case RTR0MEMOBJTYPE_PHYS_NC:
|
---|
480 | return pMemOs2->aPages[iPage].Addr;
|
---|
481 |
|
---|
482 | case RTR0MEMOBJTYPE_CONT:
|
---|
483 | return pMemOs2->Core.u.Cont.Phys + (iPage << PAGE_SHIFT);
|
---|
484 |
|
---|
485 | case RTR0MEMOBJTYPE_PHYS:
|
---|
486 | return pMemOs2->Core.u.Phys.PhysBase + (iPage << PAGE_SHIFT);
|
---|
487 |
|
---|
488 | case RTR0MEMOBJTYPE_RES_VIRT:
|
---|
489 | case RTR0MEMOBJTYPE_MAPPING:
|
---|
490 | default:
|
---|
491 | return NIL_RTHCPHYS;
|
---|
492 | }
|
---|
493 | }
|
---|
494 |
|
---|
495 |
|
---|
496 | /**
|
---|
497 | * Expands the page list so we can index pages directly.
|
---|
498 | *
|
---|
499 | * @param paPages The page list array to fix.
|
---|
500 | * @param cPages The number of pages that's supposed to go into the list.
|
---|
501 | * @param cPagesRet The actual number of pages in the list.
|
---|
502 | */
|
---|
503 | static void rtR0MemObjFixPageList(KernPageList_t *paPages, ULONG cPages, ULONG cPagesRet)
|
---|
504 | {
|
---|
505 | Assert(cPages >= cPagesRet);
|
---|
506 | if (cPages != cPagesRet)
|
---|
507 | {
|
---|
508 | ULONG iIn = cPagesRet;
|
---|
509 | ULONG iOut = cPages;
|
---|
510 | do
|
---|
511 | {
|
---|
512 | iIn--;
|
---|
513 | iOut--;
|
---|
514 | Assert(iIn <= iOut);
|
---|
515 |
|
---|
516 | KernPageList_t Page = paPages[iIn];
|
---|
517 | Assert(!(Page.Addr & PAGE_OFFSET_MASK));
|
---|
518 | Assert(Page.Size == RT_ALIGN_Z(Page.Size, PAGE_SIZE));
|
---|
519 |
|
---|
520 | if (Page.Size > PAGE_SIZE)
|
---|
521 | {
|
---|
522 | do
|
---|
523 | {
|
---|
524 | Page.Size -= PAGE_SIZE;
|
---|
525 | paPages[iOut].Addr = Page.Addr + Page.Size;
|
---|
526 | paPages[iOut].Size = PAGE_SIZE;
|
---|
527 | iOut--;
|
---|
528 | } while (Page.Size > PAGE_SIZE);
|
---|
529 | }
|
---|
530 |
|
---|
531 | paPages[iOut].Addr = Page.Addr;
|
---|
532 | paPages[iOut].Size = PAGE_SIZE;
|
---|
533 | } while ( iIn != iOut
|
---|
534 | && iIn > 0);
|
---|
535 | }
|
---|
536 | }
|
---|
537 |
|
---|