1 | /* $Id: memobj-r0drv-freebsd.c 8245 2008-04-21 17:24:28Z vboxsync $ */
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2 | /** @file
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3 | * IPRT - Ring-0 Memory Objects, FreeBSD.
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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 <[email protected]>
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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-freebsd-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 FreeBSD version of the memory object structure.
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52 | */
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53 | typedef struct RTR0MEMOBJFREEBSD
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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 | /** The VM object associated with the allocation. */
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58 | vm_object_t pObject;
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59 | /** the VM object associated with the mapping.
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60 | * In mapping mem object, this is the shadow object?
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61 | * In a allocation/enter mem object, this is the shared object we constructed (contig, perhaps alloc). */
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62 | vm_object_t pMappingObject;
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63 | } RTR0MEMOBJFREEBSD, *PRTR0MEMOBJFREEBSD;
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64 |
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65 |
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66 | MALLOC_DEFINE(M_IPRTMOBJ, "iprtmobj", "IPRT - R0MemObj");
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67 |
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68 | /*******************************************************************************
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69 | * Internal Functions *
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70 | *******************************************************************************/
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71 |
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72 |
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73 | int rtR0MemObjNativeFree(RTR0MEMOBJ pMem)
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74 | {
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75 | PRTR0MEMOBJFREEBSD pMemFreeBSD = (PRTR0MEMOBJFREEBSD)pMem;
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76 | int rc;
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77 |
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78 | switch (pMemFreeBSD->Core.enmType)
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79 | {
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80 | case RTR0MEMOBJTYPE_CONT:
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81 | contigfree(pMemFreeBSD->Core.pv, pMemFreeBSD->Core.cb, M_IPRTMOBJ);
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82 | if (pMemFreeBSD->pMappingObject)
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83 | {
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84 | rc = vm_map_remove(kernel_map,
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85 | (vm_offset_t)pMemFreeBSD->Core.pv,
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86 | (vm_offset_t)pMemFreeBSD->Core.pv + pMemFreeBSD->Core.cb);
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87 | AssertMsg(rc == KERN_SUCCESS, ("%#x", rc));
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88 | }
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89 | break;
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90 |
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91 | case RTR0MEMOBJTYPE_PAGE:
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92 | if (pMemFreeBSD->pObject)
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93 | {
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94 | rc = vm_map_remove(kernel_map,
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95 | (vm_offset_t)pMemFreeBSD->Core.pv,
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96 | (vm_offset_t)pMemFreeBSD->Core.pv + pMemFreeBSD->Core.cb);
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97 | AssertMsg(rc == KERN_SUCCESS, ("%#x", rc));
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98 | }
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99 | else
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100 | {
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101 | free(pMemFreeBSD->Core.pv, M_IPRTMOBJ);
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102 | if (pMemFreeBSD->pMappingObject)
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103 | {
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104 | rc = vm_map_remove(kernel_map,
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105 | (vm_offset_t)pMemFreeBSD->Core.pv,
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106 | (vm_offset_t)pMemFreeBSD->Core.pv + pMemFreeBSD->Core.cb);
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107 | AssertMsg(rc == KERN_SUCCESS, ("%#x", rc));
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108 | }
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109 | }
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110 | break;
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111 |
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112 | case RTR0MEMOBJTYPE_LOCK:
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113 | {
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114 | vm_map_t pMap = kernel_map;
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115 | if (pMemFreeBSD->Core.u.Lock.R0Process != NIL_RTR0PROCESS)
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116 | pMap = &((struct proc *)pMemFreeBSD->Core.u.Lock.R0Process)->p_vmspace->vm_map;
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117 | rc = vm_map_unwire(pMap,
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118 | (vm_offset_t)pMemFreeBSD->Core.pv,
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119 | (vm_offset_t)pMemFreeBSD->Core.pv + pMemFreeBSD->Core.cb,
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120 | VM_MAP_WIRE_SYSTEM | VM_MAP_WIRE_NOHOLES);
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121 | AssertMsg(rc == KERN_SUCCESS, ("%#x", rc));
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122 | break;
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123 | }
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124 |
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125 | case RTR0MEMOBJTYPE_RES_VIRT:
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126 | {
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127 | vm_map_t pMap = kernel_map;
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128 | if (pMemFreeBSD->Core.u.Lock.R0Process != NIL_RTR0PROCESS)
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129 | pMap = &((struct proc *)pMemFreeBSD->Core.u.Lock.R0Process)->p_vmspace->vm_map;
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130 | rc = vm_map_remove(pMap,
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131 | (vm_offset_t)pMemFreeBSD->Core.pv,
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132 | (vm_offset_t)pMemFreeBSD->Core.pv + pMemFreeBSD->Core.cb);
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133 | AssertMsg(rc == KERN_SUCCESS, ("%#x", rc));
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134 | break;
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135 | }
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136 |
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137 | case RTR0MEMOBJTYPE_MAPPING:
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138 | {
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139 | /** @todo Figure out mapping... */
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140 | }
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141 |
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142 | /* unused: */
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143 | case RTR0MEMOBJTYPE_LOW:
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144 | case RTR0MEMOBJTYPE_PHYS:
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145 | case RTR0MEMOBJTYPE_PHYS_NC:
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146 | default:
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147 | AssertMsgFailed(("enmType=%d\n", pMemFreeBSD->Core.enmType));
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148 | return VERR_INTERNAL_ERROR;
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149 | }
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150 |
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151 | Assert(!pMemFreeBSD->pMappingObject);
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152 |
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153 | return VINF_SUCCESS;
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154 | }
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155 |
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156 |
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157 | int rtR0MemObjNativeAllocPage(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, bool fExecutable)
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158 | {
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159 | int rc;
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160 |
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161 | /* create the object. */
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162 | PRTR0MEMOBJFREEBSD pMemFreeBSD = (PRTR0MEMOBJFREEBSD)rtR0MemObjNew(sizeof(*pMemFreeBSD), RTR0MEMOBJTYPE_PAGE, NULL, cb);
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163 | if (!pMemFreeBSD)
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164 | return VERR_NO_MEMORY;
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165 |
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166 | /*
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167 | * We've two options here both expressed nicely by how kld allocates
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168 | * memory for the module bits:
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169 | * http://fxr.watson.org/fxr/source/kern/link_elf.c?v=RELENG62#L701
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170 | */
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171 | #if 0
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172 | pMemFreeBSD->Core.pv = malloc(cb, M_IPRTMOBJ, M_ZERO);
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173 | if (pMemFreeBSD->Core.pv)
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174 | {
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175 | *ppMem = &pMemFreeBSD->Core;
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176 | return VINF_SUCCESS;
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177 | }
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178 | rc = VERR_NO_MEMORY;
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179 | NOREF(fExecutable);
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180 |
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181 | #else
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182 | pMemFreeBSD->pObject = vm_object_allocate(OBJT_DEFAULT, cb >> PAGE_SHIFT);
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183 | if (pMemFreeBSD->pObject)
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184 | {
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185 | vm_offset_t MapAddress = vm_map_min(kernel_map);
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186 | rc = vm_map_find(kernel_map, /* map */
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187 | pMemFreeBSD->pObject, /* object */
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188 | 0, /* offset */
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189 | &MapAddress, /* addr (IN/OUT) */
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190 | cb, /* length */
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191 | TRUE, /* find_space */
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192 | fExecutable /* protection */
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193 | ? VM_PROT_ALL
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194 | : VM_PROT_RW,
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195 | VM_PROT_ALL, /* max(_prot) */
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196 | FALSE); /* cow (copy-on-write) */
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197 | if (rc == KERN_SUCCESS)
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198 | {
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199 | rc = vm_map_wire(kernel_map, /* map */
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200 | MapAddress, /* start */
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201 | MapAddress + cb, /* end */
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202 | VM_MAP_WIRE_SYSTEM | VM_MAP_WIRE_NOHOLES);
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203 | if (rc == KERN_SUCCESS)
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204 | {
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205 | pMemFreeBSD->Core.pv = (void *)MapAddress;
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206 | *ppMem = &pMemFreeBSD->Core;
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207 | return VINF_SUCCESS;
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208 | }
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209 |
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210 | vm_map_remove(kernel_map,
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211 | MapAddress,
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212 | MapAddress + cb);
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213 | }
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214 | else
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215 | vm_object_deallocate(pMemFreeBSD->pObject);
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216 | rc = VERR_NO_MEMORY; /** @todo fix translation (borrow from darwin) */
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217 | }
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218 | else
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219 | rc = VERR_NO_MEMORY;
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220 | #endif
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221 |
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222 | rtR0MemObjDelete(&pMemFreeBSD->Core);
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223 | return rc;
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224 | }
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225 |
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226 |
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227 | int rtR0MemObjNativeAllocLow(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, bool fExecutable)
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228 | {
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229 | /*
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230 | * Try a Alloc first and see if we get luck, if not try contigmalloc.
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231 | * Might wish to try find our own pages or something later if this
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232 | * turns into a problemspot on AMD64 boxes.
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233 | */
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234 | int rc = rtR0MemObjNativeAllocPage(ppMem, cb, fExecutable);
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235 | if (RT_SUCCESS(rc))
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236 | {
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237 | size_t iPage = cb >> PAGE_SHIFT;
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238 | while (iPage-- > 0)
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239 | if (rtR0MemObjNativeGetPagePhysAddr(*ppMem, iPage) > (_4G - PAGE_SIZE))
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240 | {
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241 | RTR0MemObjFree(*ppMem, false);
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242 | *ppMem = NULL;
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243 | rc = VERR_NO_MEMORY;
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244 | break;
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245 | }
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246 | }
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247 | if (RT_FAILURE(rc))
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248 | rc = rtR0MemObjNativeAllocCont(ppMem, cb, fExecutable);
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249 | return rc;
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250 | }
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251 |
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252 |
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253 | int rtR0MemObjNativeAllocCont(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, bool fExecutable)
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254 | {
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255 | /* create the object. */
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256 | PRTR0MEMOBJFREEBSD pMemFreeBSD = (PRTR0MEMOBJFREEBSD)rtR0MemObjNew(sizeof(*pMemFreeBSD), RTR0MEMOBJTYPE_CONT, NULL, cb);
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257 | if (!pMemFreeBSD)
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258 | return VERR_NO_MEMORY;
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259 |
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260 | /* do the allocation. */
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261 | pMemFreeBSD->Core.pv = contigmalloc(cb, /* size */
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262 | M_IPRTMOBJ, /* type */
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263 | M_NOWAIT | M_ZERO, /* flags */
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264 | 0, /* lowest physical address*/
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265 | _4G-1, /* highest physical address */
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266 | PAGE_SIZE, /* alignment. */
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267 | 0); /* boundrary */
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268 | if (pMemFreeBSD->Core.pv)
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269 | {
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270 | pMemFreeBSD->Core.u.Cont.Phys = vtophys(pMemFreeBSD->Core.pv);
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271 | *ppMem = &pMemFreeBSD->Core;
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272 | return VINF_SUCCESS;
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273 | }
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274 |
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275 | NOREF(fExecutable);
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276 | rtR0MemObjDelete(&pMemFreeBSD->Core);
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277 | return VERR_NO_MEMORY;
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278 | }
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279 |
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280 |
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281 | int rtR0MemObjNativeAllocPhys(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, RTHCPHYS PhysHighest)
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282 | {
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283 | /** @todo check if there is a more appropriate API somewhere.. */
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284 |
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285 | /* create the object. */
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286 | PRTR0MEMOBJFREEBSD pMemFreeBSD = (PRTR0MEMOBJFREEBSD)rtR0MemObjNew(sizeof(*pMemFreeBSD), RTR0MEMOBJTYPE_CONT, NULL, cb);
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287 | if (!pMemFreeBSD)
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288 | return VERR_NO_MEMORY;
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289 |
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290 | /* do the allocation. */
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291 | pMemFreeBSD->Core.pv = contigmalloc(cb, /* size */
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292 | M_IPRTMOBJ, /* type */
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293 | M_NOWAIT | M_ZERO, /* flags */
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294 | 0, /* lowest physical address*/
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295 | PhysHighest, /* highest physical address */
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296 | PAGE_SIZE, /* alignment. */
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297 | 0); /* boundrary */
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298 | if (pMemFreeBSD->Core.pv)
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299 | {
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300 | pMemFreeBSD->Core.u.Cont.Phys = vtophys(pMemFreeBSD->Core.pv);
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301 | *ppMem = &pMemFreeBSD->Core;
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302 | return VINF_SUCCESS;
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303 | }
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304 |
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305 | rtR0MemObjDelete(&pMemFreeBSD->Core);
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306 | return VERR_NO_MEMORY;
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307 | }
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308 |
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309 |
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310 | int rtR0MemObjNativeAllocPhysNC(PPRTR0MEMOBJINTERNAL ppMem, size_t cb, RTHCPHYS PhysHighest)
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311 | {
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312 | /** @todo rtR0MemObjNativeAllocPhys / freebsd */
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313 | return VERR_NOT_SUPPORTED;
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314 | }
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315 |
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316 |
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317 | int rtR0MemObjNativeEnterPhys(PPRTR0MEMOBJINTERNAL ppMem, RTHCPHYS Phys, size_t cb)
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318 | {
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319 | /* create the object. */
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320 | PRTR0MEMOBJFREEBSD pMemFreeBSD = (PRTR0MEMOBJFREEBSD)rtR0MemObjNew(sizeof(*pMemFreeBSD), RTR0MEMOBJTYPE_PHYS, NULL, cb);
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321 | if (!pMemFreeBSD)
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322 | return VERR_NO_MEMORY;
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323 |
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324 | /* there is no allocation here, it needs to be mapped somewhere first. */
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325 | pMemFreeBSD->Core.u.Phys.fAllocated = false;
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326 | pMemFreeBSD->Core.u.Phys.PhysBase = Phys;
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327 | *ppMem = &pMemFreeBSD->Core;
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328 | return VINF_SUCCESS;
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329 | }
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330 |
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331 |
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332 | int rtR0MemObjNativeLockUser(PPRTR0MEMOBJINTERNAL ppMem, RTR3PTR R3Ptr, size_t cb, RTR0PROCESS R0Process)
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333 | {
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334 | int rc;
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335 |
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336 | /* create the object. */
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337 | PRTR0MEMOBJFREEBSD pMemFreeBSD = (PRTR0MEMOBJFREEBSD)rtR0MemObjNew(sizeof(*pMemFreeBSD), RTR0MEMOBJTYPE_LOCK, (void *)R3Ptr, cb);
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338 | if (!pMemFreeBSD)
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339 | return VERR_NO_MEMORY;
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340 |
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341 | /*
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342 | * We could've used vslock here, but we don't wish to be subject to
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343 | * resource usage restrictions, so we'll call vm_map_wire directly.
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344 | */
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345 | rc = vm_map_wire(&((struct proc *)R0Process)->p_vmspace->vm_map, /* the map */
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346 | (vm_offset_t)R3Ptr, /* start */
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347 | (vm_offset_t)R3Ptr + cb, /* end */
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348 | VM_MAP_WIRE_SYSTEM | VM_MAP_WIRE_NOHOLES); /* flags - SYSTEM? */
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349 | if (rc == KERN_SUCCESS)
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350 | {
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351 | pMemFreeBSD->Core.u.Lock.R0Process = R0Process;
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352 | *ppMem = &pMemFreeBSD->Core;
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353 | return VINF_SUCCESS;
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354 | }
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355 | rtR0MemObjDelete(&pMemFreeBSD->Core);
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356 | return VERR_NO_MEMORY;/** @todo fix mach -> vbox error conversion for freebsd. */
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357 | }
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358 |
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359 |
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360 | int rtR0MemObjNativeLockKernel(PPRTR0MEMOBJINTERNAL ppMem, void *pv, size_t cb)
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361 | {
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362 | int rc;
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363 |
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364 | /* create the object. */
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365 | PRTR0MEMOBJFREEBSD pMemFreeBSD = (PRTR0MEMOBJFREEBSD)rtR0MemObjNew(sizeof(*pMemFreeBSD), RTR0MEMOBJTYPE_LOCK, pv, cb);
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366 | if (!pMemFreeBSD)
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367 | return VERR_NO_MEMORY;
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368 |
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369 | /* lock the memory */
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370 | rc = vm_map_wire(kernel_map, /* the map */
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371 | (vm_offset_t)pv, /* start */
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372 | (vm_offset_t)pv + cb, /* end */
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373 | VM_MAP_WIRE_SYSTEM | VM_MAP_WIRE_NOHOLES); /* flags - SYSTEM? */
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374 | if (rc == KERN_SUCCESS)
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375 | {
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376 | pMemFreeBSD->Core.u.Lock.R0Process = NIL_RTR0PROCESS;
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377 | *ppMem = &pMemFreeBSD->Core;
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378 | return VINF_SUCCESS;
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379 | }
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380 | rtR0MemObjDelete(&pMemFreeBSD->Core);
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381 | return VERR_NO_MEMORY;/** @todo fix mach -> vbox error conversion for freebsd. */
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382 | }
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383 |
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384 |
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385 | /**
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386 | * Worker for the two virtual address space reservers.
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387 | *
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388 | * We're leaning on the examples provided by mmap and vm_mmap in vm_mmap.c here.
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389 | */
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390 | static int rtR0MemObjNativeReserveInMap(PPRTR0MEMOBJINTERNAL ppMem, void *pvFixed, size_t cb, size_t uAlignment, RTR0PROCESS R0Process, vm_map_t pMap)
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391 | {
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392 | int rc;
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393 |
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394 | /*
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395 | * The pvFixed address range must be within the VM space when specified.
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396 | */
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397 | if (pvFixed != (void *)-1
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398 | && ( (vm_offset_t)pvFixed < vm_map_min(pMap)
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399 | || (vm_offset_t)pvFixed + cb > vm_map_max(pMap)))
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400 | return VERR_INVALID_PARAMETER;
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401 |
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402 | /*
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403 | * Create the object.
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404 | */
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405 | PRTR0MEMOBJFREEBSD pMemFreeBSD = (PRTR0MEMOBJFREEBSD)rtR0MemObjNew(sizeof(*pMemFreeBSD), RTR0MEMOBJTYPE_RES_VIRT, NULL, cb);
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406 | if (!pMemFreeBSD)
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407 | return VERR_NO_MEMORY;
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408 |
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409 | /*
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410 | * Allocate an empty VM object and map it into the requested map.
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411 | */
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412 | pMemFreeBSD->pObject = vm_object_allocate(OBJT_DEFAULT, cb >> PAGE_SHIFT);
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413 | if (pMemFreeBSD->pObject)
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414 | {
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415 | vm_offset_t MapAddress = pvFixed != (void *)-1
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416 | ? (vm_offset_t)pvFixed
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417 | : vm_map_min(kernel_map);
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418 | if (pvFixed)
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419 | vm_map_remove(pMap,
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420 | MapAddress,
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421 | MapAddress + cb);
|
---|
422 |
|
---|
423 | rc = vm_map_find(pMap, /* map */
|
---|
424 | pMemFreeBSD->pObject, /* object */
|
---|
425 | 0, /* offset */
|
---|
426 | &MapAddress, /* addr (IN/OUT) */
|
---|
427 | cb, /* length */
|
---|
428 | pvFixed == (void *)-1, /* find_space */
|
---|
429 | VM_PROT_NONE, /* protection */
|
---|
430 | VM_PROT_ALL, /* max(_prot) ?? */
|
---|
431 | FALSE); /* cow (copy-on-write) */
|
---|
432 | if (rc == KERN_SUCCESS)
|
---|
433 | {
|
---|
434 | if (R0Process != NIL_RTR0PROCESS)
|
---|
435 | {
|
---|
436 | rc = vm_map_inherit(pMap,
|
---|
437 | MapAddress,
|
---|
438 | MapAddress + cb,
|
---|
439 | VM_INHERIT_SHARE);
|
---|
440 | AssertMsg(rc == KERN_SUCCESS, ("%#x\n", rc));
|
---|
441 | }
|
---|
442 | pMemFreeBSD->Core.pv = (void *)MapAddress;
|
---|
443 | pMemFreeBSD->Core.u.ResVirt.R0Process = R0Process;
|
---|
444 | *ppMem = &pMemFreeBSD->Core;
|
---|
445 | return VINF_SUCCESS;
|
---|
446 | }
|
---|
447 | vm_object_deallocate(pMemFreeBSD->pObject);
|
---|
448 | rc = VERR_NO_MEMORY; /** @todo fix translation (borrow from darwin) */
|
---|
449 | }
|
---|
450 | else
|
---|
451 | rc = VERR_NO_MEMORY;
|
---|
452 | rtR0MemObjDelete(&pMemFreeBSD->Core);
|
---|
453 | return rc;
|
---|
454 |
|
---|
455 | }
|
---|
456 |
|
---|
457 | int rtR0MemObjNativeReserveKernel(PPRTR0MEMOBJINTERNAL ppMem, void *pvFixed, size_t cb, size_t uAlignment)
|
---|
458 | {
|
---|
459 | return rtR0MemObjNativeReserveInMap(ppMem, pvFixed, cb, uAlignment, NIL_RTR0PROCESS, kernel_map);
|
---|
460 | }
|
---|
461 |
|
---|
462 |
|
---|
463 | int rtR0MemObjNativeReserveUser(PPRTR0MEMOBJINTERNAL ppMem, RTR3PTR R3PtrFixed, size_t cb, size_t uAlignment, RTR0PROCESS R0Process)
|
---|
464 | {
|
---|
465 | return rtR0MemObjNativeReserveInMap(ppMem, (void *)R3PtrFixed, cb, uAlignment, R0Process,
|
---|
466 | &((struct proc *)R0Process)->p_vmspace->vm_map);
|
---|
467 | }
|
---|
468 |
|
---|
469 |
|
---|
470 | int rtR0MemObjNativeMapKernel(PPRTR0MEMOBJINTERNAL ppMem, RTR0MEMOBJ pMemToMap, void *pvFixed, size_t uAlignment, unsigned fProt)
|
---|
471 | {
|
---|
472 | AssertMsgReturn(pvFixed == (void *)-1, ("%p\n", pvFixed), VERR_NOT_SUPPORTED);
|
---|
473 |
|
---|
474 | /* Phys: see pmap_mapdev in i386/i386/pmap.c (http://fxr.watson.org/fxr/source/i386/i386/pmap.c?v=RELENG62#L2860) */
|
---|
475 |
|
---|
476 | #if 0
|
---|
477 | /** @todo finish the implementation. */
|
---|
478 |
|
---|
479 | int rc;
|
---|
480 | void *pvR0 = NULL;
|
---|
481 | PRTR0MEMOBJFREEBSD pMemToMapOs2 = (PRTR0MEMOBJFREEBSD)pMemToMap;
|
---|
482 | switch (pMemToMapOs2->Core.enmType)
|
---|
483 | {
|
---|
484 | /*
|
---|
485 | * These has kernel mappings.
|
---|
486 | */
|
---|
487 | case RTR0MEMOBJTYPE_PAGE:
|
---|
488 | case RTR0MEMOBJTYPE_LOW:
|
---|
489 | case RTR0MEMOBJTYPE_CONT:
|
---|
490 | pvR0 = pMemToMapOs2->Core.pv;
|
---|
491 | break;
|
---|
492 |
|
---|
493 | case RTR0MEMOBJTYPE_PHYS_NC:
|
---|
494 | case RTR0MEMOBJTYPE_PHYS:
|
---|
495 | pvR0 = pMemToMapOs2->Core.pv;
|
---|
496 | if (!pvR0)
|
---|
497 | {
|
---|
498 | /* no ring-0 mapping, so allocate a mapping in the process. */
|
---|
499 | AssertMsgReturn(uAlignment == PAGE_SIZE, ("%#zx\n", uAlignment), VERR_NOT_SUPPORTED);
|
---|
500 | AssertMsgReturn(fProt & RTMEM_PROT_WRITE, ("%#x\n", fProt), VERR_NOT_SUPPORTED);
|
---|
501 | Assert(!pMemToMapOs2->Core.u.Phys.fAllocated);
|
---|
502 | ULONG ulPhys = pMemToMapOs2->Core.u.Phys.PhysBase;
|
---|
503 | rc = KernVMAlloc(pMemToMapOs2->Core.cb, VMDHA_PHYS, &pvR0, (PPVOID)&ulPhys, NULL);
|
---|
504 | if (rc)
|
---|
505 | return RTErrConvertFromOS2(rc);
|
---|
506 | pMemToMapOs2->Core.pv = pvR0;
|
---|
507 | }
|
---|
508 | break;
|
---|
509 |
|
---|
510 | case RTR0MEMOBJTYPE_LOCK:
|
---|
511 | if (pMemToMapOs2->Core.u.Lock.R0Process != NIL_RTR0PROCESS)
|
---|
512 | return VERR_NOT_SUPPORTED; /** @todo implement this... */
|
---|
513 | pvR0 = pMemToMapOs2->Core.pv;
|
---|
514 | break;
|
---|
515 |
|
---|
516 | case RTR0MEMOBJTYPE_RES_VIRT:
|
---|
517 | case RTR0MEMOBJTYPE_MAPPING:
|
---|
518 | default:
|
---|
519 | AssertMsgFailed(("enmType=%d\n", pMemToMapOs2->Core.enmType));
|
---|
520 | return VERR_INTERNAL_ERROR;
|
---|
521 | }
|
---|
522 |
|
---|
523 | /*
|
---|
524 | * Create a dummy mapping object for it.
|
---|
525 | *
|
---|
526 | * All mappings are read/write/execute in OS/2 and there isn't
|
---|
527 | * any cache options, so sharing is ok. And the main memory object
|
---|
528 | * isn't actually freed until all the mappings have been freed up
|
---|
529 | * (reference counting).
|
---|
530 | */
|
---|
531 | PRTR0MEMOBJFREEBSD pMemFreeBSD = (PRTR0MEMOBJFREEBSD)rtR0MemObjNew(RT_OFFSETOF(RTR0MEMOBJOS2, Lock), RTR0MEMOBJTYPE_MAPPING, pvR0, pMemToMapOs2->Core.cb);
|
---|
532 | if (pMemFreeBSD)
|
---|
533 | {
|
---|
534 | pMemFreeBSD->Core.u.Mapping.R0Process = NIL_RTR0PROCESS;
|
---|
535 | *ppMem = &pMemFreeBSD->Core;
|
---|
536 | return VINF_SUCCESS;
|
---|
537 | }
|
---|
538 | return VERR_NO_MEMORY;
|
---|
539 | #endif
|
---|
540 | return VERR_NOT_IMPLEMENTED;
|
---|
541 | }
|
---|
542 |
|
---|
543 |
|
---|
544 | int rtR0MemObjNativeMapUser(PPRTR0MEMOBJINTERNAL ppMem, RTR0MEMOBJ pMemToMap, RTR3PTR R3PtrFixed, size_t uAlignment, unsigned fProt, RTR0PROCESS R0Process)
|
---|
545 | {
|
---|
546 | AssertMsgReturn(R0Process == RTR0ProcHandleSelf(), ("%p != %p\n", R0Process, RTR0ProcHandleSelf()), VERR_NOT_SUPPORTED);
|
---|
547 | AssertMsgReturn(R3PtrFixed == (RTR3PTR)-1, ("%p\n", R3PtrFixed), VERR_NOT_SUPPORTED);
|
---|
548 |
|
---|
549 | #if 0
|
---|
550 | int rc;
|
---|
551 | void *pvR0;
|
---|
552 | void *pvR3 = NULL;
|
---|
553 | PRTR0MEMOBJFREEBSD pMemToMapOs2 = (PRTR0MEMOBJFREEBSD)pMemToMap;
|
---|
554 | switch (pMemToMapOs2->Core.enmType)
|
---|
555 | {
|
---|
556 | /*
|
---|
557 | * These has kernel mappings.
|
---|
558 | */
|
---|
559 | case RTR0MEMOBJTYPE_PAGE:
|
---|
560 | case RTR0MEMOBJTYPE_LOW:
|
---|
561 | case RTR0MEMOBJTYPE_CONT:
|
---|
562 | pvR0 = pMemToMapOs2->Core.pv;
|
---|
563 | break;
|
---|
564 |
|
---|
565 | case RTR0MEMOBJTYPE_PHYS:
|
---|
566 | pvR0 = pMemToMapOs2->Core.pv;
|
---|
567 | #if 0/* this is wrong. */
|
---|
568 | if (!pvR0)
|
---|
569 | {
|
---|
570 | /* no ring-0 mapping, so allocate a mapping in the process. */
|
---|
571 | AssertMsgReturn(uAlignment == PAGE_SIZE, ("%#zx\n", uAlignment), VERR_NOT_SUPPORTED);
|
---|
572 | AssertMsgReturn(fProt & RTMEM_PROT_WRITE, ("%#x\n", fProt), VERR_NOT_SUPPORTED);
|
---|
573 | Assert(!pMemToMapOs2->Core.u.Phys.fAllocated);
|
---|
574 | ULONG ulPhys = pMemToMapOs2->Core.u.Phys.PhysBase;
|
---|
575 | rc = KernVMAlloc(pMemToMapOs2->Core.cb, VMDHA_PHYS | VMDHA_PROCESS, &pvR3, (PPVOID)&ulPhys, NULL);
|
---|
576 | if (rc)
|
---|
577 | return RTErrConvertFromOS2(rc);
|
---|
578 | }
|
---|
579 | break;
|
---|
580 | #endif
|
---|
581 | return VERR_NOT_SUPPORTED;
|
---|
582 |
|
---|
583 | case RTR0MEMOBJTYPE_LOCK:
|
---|
584 | if (pMemToMapOs2->Core.u.Lock.R0Process != NIL_RTR0PROCESS)
|
---|
585 | return VERR_NOT_SUPPORTED; /** @todo implement this... */
|
---|
586 | pvR0 = pMemToMapOs2->Core.pv;
|
---|
587 | break;
|
---|
588 |
|
---|
589 | case RTR0MEMOBJTYPE_PHYS_NC:
|
---|
590 | case RTR0MEMOBJTYPE_RES_VIRT:
|
---|
591 | case RTR0MEMOBJTYPE_MAPPING:
|
---|
592 | default:
|
---|
593 | AssertMsgFailed(("enmType=%d\n", pMemToMapOs2->Core.enmType));
|
---|
594 | return VERR_INTERNAL_ERROR;
|
---|
595 | }
|
---|
596 |
|
---|
597 | /*
|
---|
598 | * Map the ring-0 memory into the current process.
|
---|
599 | */
|
---|
600 | if (!pvR3)
|
---|
601 | {
|
---|
602 | Assert(pvR0);
|
---|
603 | ULONG flFlags = 0;
|
---|
604 | if (uAlignment == PAGE_SIZE)
|
---|
605 | flFlags |= VMDHGP_4MB;
|
---|
606 | if (fProt & RTMEM_PROT_WRITE)
|
---|
607 | flFlags |= VMDHGP_WRITE;
|
---|
608 | rc = RTR0Os2DHVMGlobalToProcess(flFlags, pvR0, pMemToMapOs2->Core.cb, &pvR3);
|
---|
609 | if (rc)
|
---|
610 | return RTErrConvertFromOS2(rc);
|
---|
611 | }
|
---|
612 | Assert(pvR3);
|
---|
613 |
|
---|
614 | /*
|
---|
615 | * Create a mapping object for it.
|
---|
616 | */
|
---|
617 | PRTR0MEMOBJFREEBSD pMemFreeBSD = (PRTR0MEMOBJFREEBSD)rtR0MemObjNew(RT_OFFSETOF(RTR0MEMOBJOS2, Lock), RTR0MEMOBJTYPE_MAPPING, pvR3, pMemToMapOs2->Core.cb);
|
---|
618 | if (pMemFreeBSD)
|
---|
619 | {
|
---|
620 | Assert(pMemFreeBSD->Core.pv == pvR3);
|
---|
621 | pMemFreeBSD->Core.u.Mapping.R0Process = R0Process;
|
---|
622 | *ppMem = &pMemFreeBSD->Core;
|
---|
623 | return VINF_SUCCESS;
|
---|
624 | }
|
---|
625 | KernVMFree(pvR3);
|
---|
626 | return VERR_NO_MEMORY;
|
---|
627 | #endif
|
---|
628 | return VERR_NOT_IMPLEMENTED;
|
---|
629 | }
|
---|
630 |
|
---|
631 |
|
---|
632 | RTHCPHYS rtR0MemObjNativeGetPagePhysAddr(PRTR0MEMOBJINTERNAL pMem, size_t iPage)
|
---|
633 | {
|
---|
634 | PRTR0MEMOBJFREEBSD pMemFreeBSD = (PRTR0MEMOBJFREEBSD)pMem;
|
---|
635 |
|
---|
636 | switch (pMemFreeBSD->Core.enmType)
|
---|
637 | {
|
---|
638 | case RTR0MEMOBJTYPE_LOCK:
|
---|
639 | {
|
---|
640 | if ( pMemFreeBSD->Core.u.Lock.R0Process != NIL_RTR0PROCESS
|
---|
641 | && pMemFreeBSD->Core.u.Lock.R0Process != (RTR0PROCESS)curproc)
|
---|
642 | {
|
---|
643 | /* later */
|
---|
644 | return NIL_RTHCPHYS;
|
---|
645 | }
|
---|
646 | }
|
---|
647 | case RTR0MEMOBJTYPE_PAGE:
|
---|
648 | {
|
---|
649 | uint8_t *pb = (uint8_t *)pMemFreeBSD->Core.pv + ((size_t)iPage << PAGE_SHIFT);
|
---|
650 | return vtophys(pb);
|
---|
651 | }
|
---|
652 |
|
---|
653 | case RTR0MEMOBJTYPE_CONT:
|
---|
654 | return pMemFreeBSD->Core.u.Cont.Phys + (iPage << PAGE_SHIFT);
|
---|
655 |
|
---|
656 | case RTR0MEMOBJTYPE_PHYS:
|
---|
657 | return pMemFreeBSD->Core.u.Phys.PhysBase + (iPage << PAGE_SHIFT);
|
---|
658 |
|
---|
659 | case RTR0MEMOBJTYPE_PHYS_NC:
|
---|
660 | case RTR0MEMOBJTYPE_RES_VIRT:
|
---|
661 | case RTR0MEMOBJTYPE_MAPPING:
|
---|
662 | case RTR0MEMOBJTYPE_LOW:
|
---|
663 | default:
|
---|
664 | return NIL_RTHCPHYS;
|
---|
665 | }
|
---|
666 | }
|
---|