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1 // Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of the License "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // |
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15 |
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16 #include <plat_priv.h> |
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17 #include "mm.h" |
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18 #include "mmu.h" |
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19 #include "mmapping.h" |
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20 #include "mobject.h" |
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21 #include "maddressspace.h" |
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22 #include "mptalloc.h" |
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23 #include "mmanager.h" // needed for DMemoryManager::Pin/Unpin, not nice, but no obvious way to break dependency |
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24 #include "cache_maintenance.inl" |
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25 |
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26 // |
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27 // DMemoryMapping |
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28 // |
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29 |
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30 DMemoryMapping::DMemoryMapping(TUint aType) |
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31 : DMemoryMappingBase(aType) |
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32 { |
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33 } |
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34 |
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35 |
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36 TInt DMemoryMapping::Construct(TMemoryAttributes aAttributes, TMappingCreateFlags aFlags, TInt aOsAsid, TLinAddr aAddr, TUint aSize, TLinAddr aColourOffset) |
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37 { |
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38 TRACE(("DMemoryMapping[0x%08x]::Construct(0x%x,0x%x,%d,0x%08x,0x%08x,0x%08x)",this,(TUint32&)aAttributes,aFlags,aOsAsid,aAddr,aSize,aColourOffset)); |
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39 |
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40 // setup PDE values... |
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41 iBlankPde = Mmu::BlankPde(aAttributes); |
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42 |
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43 // setup flags... |
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44 if(aFlags&EMappingCreateReserveAllResources) |
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45 Flags() |= EPermanentPageTables; |
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46 |
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47 // allocate virtual memory... |
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48 TInt r = AllocateVirtualMemory(aFlags,aOsAsid,aAddr,aSize,aColourOffset); |
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49 if(r==KErrNone) |
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50 { |
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51 // add to address space... |
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52 TLinAddr addr = iAllocatedLinAddrAndOsAsid&~KPageMask; |
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53 TInt osAsid = iAllocatedLinAddrAndOsAsid&KPageMask; |
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54 r = AddressSpace[osAsid]->AddMapping(addr,this); |
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55 if(r!=KErrNone) |
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56 FreeVirtualMemory(); |
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57 } |
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58 |
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59 return r; |
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60 } |
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61 |
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62 |
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63 DMemoryMapping::~DMemoryMapping() |
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64 { |
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65 TRACE(("DMemoryMapping[0x%08x]::~DMemoryMapping()",this)); |
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66 __NK_ASSERT_DEBUG(!IsAttached()); |
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67 |
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68 // remove from address space... |
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69 TLinAddr addr = iAllocatedLinAddrAndOsAsid&~KPageMask; |
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70 TInt osAsid = iAllocatedLinAddrAndOsAsid&KPageMask; |
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71 TAny* removed = AddressSpace[osAsid]->RemoveMapping(addr); |
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72 if(removed) |
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73 __NK_ASSERT_DEBUG(removed==this); |
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74 |
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75 FreeVirtualMemory(); |
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76 } |
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77 |
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78 |
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79 void DMemoryMapping::BTraceCreate() |
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80 { |
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81 MmuLock::Lock(); |
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82 TUint32 data[4] = { iStartIndex, iSizeInPages, OsAsid(), Base() }; |
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83 BTraceContextN(BTrace::EFlexibleMemModel,BTrace::EMemoryMappingCreate,this,Memory(),data,sizeof(data)); |
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84 MmuLock::Unlock(); |
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85 } |
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86 |
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87 |
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88 TInt DMemoryMapping::Map(DMemoryObject* aMemory, TUint aIndex, TUint aCount, TMappingPermissions aPermissions) |
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89 { |
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90 TRACE(("DMemoryMapping[0x%08x]::Map(0x%08x,0x%x,0x%x,0x%08x)",this,aMemory,aIndex,aCount,aPermissions)); |
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91 __NK_ASSERT_DEBUG(!IsAttached()); |
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92 |
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93 // check reserved resources are compatible (memory objects with reserved resources |
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94 // don't expect to have to allocate memory when mapping new pages),,, |
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95 if(aMemory->iFlags&DMemoryObject::EReserveResources && !(Flags()&EPermanentPageTables)) |
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96 return KErrArgument; |
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97 |
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98 // check arguments for coarse mappings... |
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99 if(IsCoarse()) |
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100 { |
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101 if(!aMemory->IsCoarse()) |
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102 return KErrArgument; |
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103 if((aCount|aIndex)&(KChunkMask>>KPageShift)) |
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104 return KErrArgument; |
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105 } |
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106 |
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107 TLinAddr base = iAllocatedLinAddrAndOsAsid&~KPageMask; |
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108 #ifdef _DEBUG |
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109 TUint osAsid = iAllocatedLinAddrAndOsAsid&KPageMask; |
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110 #endif |
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111 |
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112 // check user/supervisor memory partitioning... |
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113 if(base<KUserMemoryLimit != (bool)(aPermissions&EUser)) |
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114 return KErrAccessDenied; |
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115 |
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116 // check mapping doesn't straddle KGlobalMemoryBase or KUserMemoryLimit... |
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117 __NK_ASSERT_DEBUG(TUint(KGlobalMemoryBase-base)==0 || TUint(KGlobalMemoryBase-base)>=TUint(aCount<<KPageShift)); |
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118 __NK_ASSERT_DEBUG(TUint(KUserMemoryLimit-base)==0 || TUint(KUserMemoryLimit-base)>=TUint(aCount<<KPageShift)); |
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119 |
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120 // setup attributes... |
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121 TBool global = base>=KGlobalMemoryBase; |
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122 __NK_ASSERT_DEBUG(global || osAsid!=(TInt)KKernelOsAsid); // prevent non-global memory in kernel process |
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123 PteType() = Mmu::PteType(aPermissions,global); |
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124 iBlankPte = Mmu::BlankPte(aMemory->Attributes(),PteType()); |
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125 |
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126 // setup base address... |
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127 TUint colourOffset = ((aIndex&KPageColourMask)<<KPageShift); |
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128 if(colourOffset+aCount*KPageSize > iAllocatedSize) |
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129 return KErrTooBig; |
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130 __NK_ASSERT_DEBUG(!iLinAddrAndOsAsid || ((iLinAddrAndOsAsid^iAllocatedLinAddrAndOsAsid)&~(KPageColourMask<<KPageShift))==0); // new, OR, only differ in page colour |
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131 iLinAddrAndOsAsid = iAllocatedLinAddrAndOsAsid+colourOffset; |
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132 |
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133 // attach to memory object... |
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134 TInt r = Attach(aMemory,aIndex,aCount); |
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135 |
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136 // cleanup if error... |
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137 if(r!=KErrNone) |
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138 iLinAddrAndOsAsid = 0; |
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139 |
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140 return r; |
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141 } |
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142 |
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143 |
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144 void DMemoryMapping::Unmap() |
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145 { |
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146 Detach(); |
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147 // we can't clear iLinAddrAndOsAsid here because this may be needed by other code, |
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148 // e.g. DFineMapping::MapPages/UnmapPages/RestrictPages/PageIn |
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149 } |
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150 |
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151 |
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152 TInt DMemoryMapping::AllocateVirtualMemory(TMappingCreateFlags aFlags, TInt aOsAsid, TLinAddr aAddr, TUint aSize, TLinAddr aColourOffset) |
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153 { |
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154 TRACE(("DMemoryMapping[0x%08x]::AllocateVirtualMemory(0x%x,%d,0x%08x,0x%08x,0x%08x)",this,aFlags,aOsAsid,aAddr,aSize,aColourOffset)); |
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155 __NK_ASSERT_DEBUG((aAddr&KPageMask)==0); |
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156 __NK_ASSERT_DEBUG(!iAllocatedLinAddrAndOsAsid); |
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157 __NK_ASSERT_DEBUG(!iAllocatedSize); |
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158 |
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159 // setup PDE type... |
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160 TUint pdeType = 0; |
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161 if(aFlags&EMappingCreateCommonVirtual) |
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162 pdeType |= EVirtualSlabTypeCommonVirtual; |
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163 if(aFlags&EMappingCreateDemandPaged) |
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164 pdeType |= EVirtualSlabTypeDemandPaged; |
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165 |
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166 TInt r; |
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167 TUint colourOffset = aColourOffset&(KPageColourMask<<KPageShift); |
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168 TLinAddr addr; |
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169 TUint size; |
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170 if(aFlags&(EMappingCreateFixedVirtual|EMappingCreateAdoptVirtual)) |
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171 { |
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172 // just use the supplied virtual address... |
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173 __NK_ASSERT_ALWAYS(aAddr); |
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174 __NK_ASSERT_ALWAYS(colourOffset==0); |
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175 __NK_ASSERT_DEBUG((aFlags&EMappingCreateAdoptVirtual)==0 || AddressSpace[aOsAsid]->CheckPdeType(aAddr,aSize,pdeType)); |
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176 addr = aAddr; |
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177 size = aSize; |
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178 r = KErrNone; |
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179 } |
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180 else |
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181 { |
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182 if(aFlags&(EMappingCreateExactVirtual|EMappingCreateCommonVirtual)) |
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183 { |
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184 __NK_ASSERT_ALWAYS(aAddr); // address must be specified |
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185 } |
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186 else |
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187 { |
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188 __NK_ASSERT_ALWAYS(!aAddr); // address shouldn't have been specified |
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189 } |
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190 |
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191 // adjust for colour... |
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192 TUint allocSize = aSize+colourOffset; |
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193 TUint allocAddr = aAddr; |
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194 if(allocAddr) |
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195 { |
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196 allocAddr -= colourOffset; |
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197 if(allocAddr&(KPageColourMask<<KPageShift)) |
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198 return KErrArgument; // wrong colour |
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199 } |
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200 |
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201 // allocate virtual addresses... |
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202 if(aFlags&EMappingCreateUserGlobalVirtual) |
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203 { |
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204 if(aOsAsid!=(TInt)KKernelOsAsid) |
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205 return KErrArgument; |
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206 r = DAddressSpace::AllocateUserGlobalVirtualMemory(addr,size,allocAddr,allocSize,pdeType); |
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207 } |
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208 else |
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209 r = AddressSpace[aOsAsid]->AllocateVirtualMemory(addr,size,allocAddr,allocSize,pdeType); |
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210 } |
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211 |
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212 if(r==KErrNone) |
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213 { |
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214 iAllocatedLinAddrAndOsAsid = addr|aOsAsid; |
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215 iAllocatedSize = size; |
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216 } |
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217 |
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218 TRACE(("DMemoryMapping[0x%08x]::AllocateVirtualMemory returns %d address=0x%08x",this,r,addr)); |
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219 return r; |
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220 } |
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221 |
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222 |
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223 void DMemoryMapping::FreeVirtualMemory() |
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224 { |
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225 if(!iAllocatedSize) |
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226 return; // no virtual memory to free |
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227 |
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228 TRACE(("DMemoryMapping[0x%08x]::FreeVirtualMemory()",this)); |
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229 |
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230 iLinAddrAndOsAsid = 0; |
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231 |
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232 TLinAddr addr = iAllocatedLinAddrAndOsAsid&~KPageMask; |
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233 TInt osAsid = iAllocatedLinAddrAndOsAsid&KPageMask; |
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234 AddressSpace[osAsid]->FreeVirtualMemory(addr,iAllocatedSize); |
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235 iAllocatedLinAddrAndOsAsid = 0; |
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236 iAllocatedSize = 0; |
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237 } |
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238 |
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239 |
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240 |
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241 // |
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242 // DCoarseMapping |
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243 // |
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244 |
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245 DCoarseMapping::DCoarseMapping() |
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246 : DMemoryMapping(ECoarseMapping) |
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247 { |
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248 } |
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249 |
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250 |
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251 DCoarseMapping::DCoarseMapping(TUint aFlags) |
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252 : DMemoryMapping(ECoarseMapping|aFlags) |
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253 { |
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254 } |
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255 |
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256 |
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257 DCoarseMapping::~DCoarseMapping() |
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258 { |
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259 } |
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260 |
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261 |
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262 TInt DCoarseMapping::DoMap() |
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263 { |
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264 TRACE(("DCoarseMapping[0x%08x]::DoMap()", this)); |
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265 __NK_ASSERT_DEBUG(((iStartIndex|iSizeInPages)&(KChunkMask>>KPageShift))==0); // be extra paranoid about alignment |
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266 |
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267 MmuLock::Lock(); |
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268 TPde* pPde = Mmu::PageDirectoryEntry(OsAsid(),Base()); |
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269 DCoarseMemory* memory = (DCoarseMemory*)Memory(true); // safe because we're called from code which has added mapping to memory |
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270 |
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271 TUint flash = 0; |
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272 TUint chunk = iStartIndex >> KPagesInPDEShift; |
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273 TUint endChunk = (iStartIndex + iSizeInPages) >> KPagesInPDEShift; |
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274 TBool sectionMappingsBroken = EFalse; |
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275 |
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276 while(chunk < endChunk) |
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277 { |
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278 MmuLock::Flash(flash,KMaxPdesInOneGo*2); |
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279 TPte* pt = memory->GetPageTable(PteType(), chunk); |
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280 if(!pt) |
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281 { |
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282 TRACE2(("!PDE %x=%x (was %x)",pPde,KPdeUnallocatedEntry,*pPde)); |
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283 __NK_ASSERT_DEBUG(*pPde==KPdeUnallocatedEntry); |
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284 } |
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285 else |
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286 { |
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287 TPde pde = Mmu::PageTablePhysAddr(pt)|iBlankPde; |
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288 TRACE2(("!PDE %x=%x (was %x)",pPde,pde,*pPde)); |
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289 if (Mmu::PdeMapsSection(*pPde)) |
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290 { |
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291 // break previous section mapping... |
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292 __NK_ASSERT_DEBUG(*pPde==Mmu::PageToSectionEntry(pt[0],iBlankPde)); |
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293 sectionMappingsBroken = ETrue; |
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294 } |
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295 else |
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296 __NK_ASSERT_DEBUG(*pPde==KPdeUnallocatedEntry || ((*pPde^pde)&~KPdeMatchMask)==0); |
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297 *pPde = pde; |
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298 SinglePdeUpdated(pPde); |
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299 flash += 3; // increase flash rate because we've done quite a bit more work |
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300 } |
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301 ++pPde; |
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302 ++chunk; |
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303 } |
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304 MmuLock::Unlock(); |
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305 |
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306 if (sectionMappingsBroken) |
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307 { |
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308 // We must invalidate the TLB since we broke section mappings created by the bootstrap. |
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309 // Since this will only ever happen on boot, we just invalidate the entire TLB for this |
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310 // process. |
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311 InvalidateTLBForAsid(OsAsid()); |
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312 } |
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313 |
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314 return KErrNone; |
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315 } |
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316 |
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317 |
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318 void DCoarseMapping::DoUnmap() |
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319 { |
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320 TRACE(("DCoarseMapping[0x%08x]::DoUnmap()", this)); |
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321 MmuLock::Lock(); |
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322 TPde* pPde = Mmu::PageDirectoryEntry(OsAsid(),Base()); |
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323 TPde* pPdeEnd = pPde+(iSizeInPages>>(KChunkShift-KPageShift)); |
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324 TUint flash = 0; |
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325 do |
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326 { |
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327 MmuLock::Flash(flash,KMaxPdesInOneGo); |
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328 TPde pde = KPdeUnallocatedEntry; |
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329 TRACE2(("!PDE %x=%x",pPde,pde)); |
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330 *pPde = pde; |
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331 SinglePdeUpdated(pPde); |
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332 ++pPde; |
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333 } |
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334 while(pPde<pPdeEnd); |
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335 MmuLock::Unlock(); |
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336 |
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337 InvalidateTLBForAsid(OsAsid()); |
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338 } |
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339 |
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340 |
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341 TInt DCoarseMapping::MapPages(RPageArray::TIter aPages, TUint aMapInstanceCount) |
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342 { |
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343 // shouldn't ever be called because coarse mappings don't have their own page tables... |
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344 __NK_ASSERT_DEBUG(0); |
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345 return KErrNotSupported; |
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346 } |
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347 |
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348 |
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349 void DCoarseMapping::UnmapPages(RPageArray::TIter aPages, TUint aMapInstanceCount) |
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350 { |
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351 // shouldn't ever be called because coarse mappings don't have their own page tables... |
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352 __NK_ASSERT_DEBUG(0); |
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353 } |
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354 |
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355 void DCoarseMapping::RemapPage(TPhysAddr& aPageArray, TUint aIndex, TUint aMapInstanceCount, TBool aInvalidateTLB) |
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356 { |
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357 // shouldn't ever be called because coarse mappings don't have their own page tables... |
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358 __NK_ASSERT_DEBUG(0); |
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359 } |
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360 |
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361 void DCoarseMapping::RestrictPagesNA(RPageArray::TIter aPages, TUint aMapInstanceCount) |
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362 { |
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363 // shouldn't ever be called because coarse mappings don't have their own page tables... |
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364 __NK_ASSERT_DEBUG(0); |
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365 } |
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366 |
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367 |
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368 TInt DCoarseMapping::PageIn(RPageArray::TIter aPages, TPinArgs& aPinArgs, TUint aMapInstanceCount) |
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369 { |
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370 MmuLock::Lock(); |
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371 |
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372 if(!IsAttached()) |
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373 { |
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374 MmuLock::Unlock(); |
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375 return KErrNotFound; |
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376 } |
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377 |
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378 DCoarseMemory* memory = (DCoarseMemory*)Memory(true); // safe because we've checked mapping IsAttached |
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379 return memory->PageIn(this, aPages, aPinArgs, aMapInstanceCount); |
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380 } |
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381 |
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382 |
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383 TBool DCoarseMapping::MovingPageIn(TPhysAddr& aPageArrayPtr, TUint aIndex) |
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384 { |
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385 __NK_ASSERT_DEBUG(MmuLock::IsHeld()); |
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386 __NK_ASSERT_DEBUG(IsAttached()); |
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387 |
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388 DCoarseMemory* memory = (DCoarseMemory*)Memory(true); // safe because we've checked mapping IsAttached |
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389 TBool success = memory->MovingPageIn(this, aPageArrayPtr, aIndex); |
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390 if (success) |
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391 { |
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392 TLinAddr addr = Base() + (aIndex - iStartIndex) * KPageSize; |
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393 InvalidateTLBForPage(addr); |
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394 } |
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395 return success; |
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396 } |
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397 |
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398 |
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399 TPte* DCoarseMapping::FindPageTable(TLinAddr aLinAddr, TUint aMemoryIndex) |
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400 { |
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401 TRACE(("DCoarseMapping::FindPageTable(0x%x, %d)", aLinAddr, aMemoryIndex)); |
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402 __NK_ASSERT_DEBUG(MmuLock::IsHeld()); |
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403 __NK_ASSERT_DEBUG(IsAttached()); |
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404 DCoarseMemory* memory = (DCoarseMemory*)Memory(true); // safe because we've checked mapping IsAttached |
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405 return memory->FindPageTable(this, aLinAddr, aMemoryIndex); |
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406 } |
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407 |
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408 |
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409 |
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410 // |
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411 // DFineMapping |
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412 // |
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413 |
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414 DFineMapping::DFineMapping() |
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415 : DMemoryMapping(0) |
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416 { |
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417 } |
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418 |
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419 |
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420 DFineMapping::~DFineMapping() |
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421 { |
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422 TRACE(("DFineMapping[0x%08x]::~DFineMapping()",this)); |
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423 FreePermanentPageTables(); |
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424 } |
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425 |
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426 #ifdef _DEBUG |
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427 void DFineMapping::ValidatePageTable(TPte* aPt, TLinAddr aAddr) |
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428 { |
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429 if(aPt) |
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430 { |
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431 // check page table is correct... |
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432 SPageTableInfo* pti = SPageTableInfo::FromPtPtr(aPt); |
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433 __NK_ASSERT_DEBUG(pti->CheckFine(aAddr&~KChunkMask,OsAsid())); |
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434 DMemoryObject* memory = Memory(); |
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435 if(memory) |
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436 { |
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437 if(memory->IsDemandPaged() && !IsPinned() && !(Flags()&EPageTablesAllocated)) |
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438 __NK_ASSERT_DEBUG(pti->IsDemandPaged()); |
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439 else |
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440 __NK_ASSERT_DEBUG(!pti->IsDemandPaged()); |
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441 } |
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442 } |
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443 } |
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444 #endif |
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445 |
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446 TPte* DFineMapping::GetPageTable(TLinAddr aAddr) |
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447 { |
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448 __NK_ASSERT_DEBUG(MmuLock::IsHeld()); |
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449 |
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450 // get address of PDE which refers to the page table... |
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451 TPde* pPde = Mmu::PageDirectoryEntry(OsAsid(),aAddr); |
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452 |
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453 // get page table... |
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454 TPte* pt = Mmu::PageTableFromPde(*pPde); |
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455 #ifdef _DEBUG |
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456 ValidatePageTable(pt, aAddr); |
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457 #endif |
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458 return pt; |
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459 } |
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460 |
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461 |
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462 TPte* DFineMapping::GetOrAllocatePageTable(TLinAddr aAddr) |
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463 { |
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464 __NK_ASSERT_DEBUG(MmuLock::IsHeld()); |
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465 |
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466 // get address of PDE which refers to the page table... |
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467 TPde* pPde = Mmu::PageDirectoryEntry(OsAsid(),aAddr); |
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468 |
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469 // get page table... |
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470 TPte* pt = Mmu::PageTableFromPde(*pPde); |
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471 if(!pt) |
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472 { |
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473 pt = AllocatePageTable(aAddr,pPde); |
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474 #ifdef _DEBUG |
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475 ValidatePageTable(pt, aAddr); |
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476 #endif |
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477 } |
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478 |
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479 return pt; |
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480 } |
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481 |
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482 |
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483 TPte* DFineMapping::GetOrAllocatePageTable(TLinAddr aAddr, TPinArgs& aPinArgs) |
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484 { |
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485 __NK_ASSERT_DEBUG(aPinArgs.iPinnedPageTables); |
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486 |
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487 if(!aPinArgs.HaveSufficientPages(KNumPagesToPinOnePageTable)) |
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488 return 0; |
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489 |
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490 TPte* pinnedPt = 0; |
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491 for(;;) |
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492 { |
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493 TPte* pt = GetOrAllocatePageTable(aAddr); |
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494 |
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495 if(pinnedPt && pinnedPt!=pt) |
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496 { |
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497 // previously pinned page table not needed... |
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498 PageTableAllocator::UnpinPageTable(pinnedPt,aPinArgs); |
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499 |
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500 // make sure we have memory for next pin attempt... |
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501 MmuLock::Unlock(); |
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502 aPinArgs.AllocReplacementPages(KNumPagesToPinOnePageTable); |
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503 MmuLock::Lock(); |
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504 if(!aPinArgs.HaveSufficientPages(KNumPagesToPinOnePageTable)) // if out of memory... |
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505 { |
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506 // make sure we free any unneeded page table we allocated... |
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507 if(pt) |
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508 FreePageTable(Mmu::PageDirectoryEntry(OsAsid(),aAddr)); |
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509 return 0; |
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510 } |
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511 } |
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512 |
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513 if(!pt) |
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514 return 0; // out of memory |
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515 |
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516 if(pt==pinnedPt) |
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517 { |
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518 // we got a page table and it was pinned... |
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519 *aPinArgs.iPinnedPageTables++ = pt; |
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520 ++aPinArgs.iNumPinnedPageTables; |
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521 return pt; |
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522 } |
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523 |
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524 // don't pin page table if it's not paged (e.g. unpaged part of ROM)... |
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525 SPageTableInfo* pti = SPageTableInfo::FromPtPtr(pt); |
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526 if(!pti->IsDemandPaged()) |
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527 return pt; |
|
528 |
|
529 // pin the page table... |
|
530 pinnedPt = pt; |
|
531 PageTableAllocator::PinPageTable(pinnedPt,aPinArgs); |
|
532 } |
|
533 } |
|
534 |
|
535 |
|
536 TInt DFineMapping::AllocateVirtualMemory(TMappingCreateFlags aFlags, TInt aOsAsid, TLinAddr aAddr, TUint aSize, TLinAddr aColourOffset) |
|
537 { |
|
538 TInt r = DMemoryMapping::AllocateVirtualMemory(aFlags,aOsAsid,aAddr,aSize,aColourOffset); |
|
539 if(r==KErrNone && (Flags()&EPermanentPageTables)) |
|
540 { |
|
541 r = AllocatePermanentPageTables(); |
|
542 if(r!=KErrNone) |
|
543 FreeVirtualMemory(); |
|
544 } |
|
545 return r; |
|
546 } |
|
547 |
|
548 |
|
549 void DFineMapping::FreeVirtualMemory() |
|
550 { |
|
551 FreePermanentPageTables(); |
|
552 DMemoryMapping::FreeVirtualMemory(); |
|
553 } |
|
554 |
|
555 |
|
556 TPte* DFineMapping::AllocatePageTable(TLinAddr aAddr, TPde* aPdeAddress, TBool aPermanent) |
|
557 { |
|
558 TRACE2(("DFineMapping[0x%08x]::AllocatePageTable(0x%08x,0x%08x,%d)",this,aAddr,aPdeAddress,aPermanent)); |
|
559 |
|
560 __NK_ASSERT_DEBUG(MmuLock::IsHeld()); |
|
561 |
|
562 for(;;) |
|
563 { |
|
564 // mapping is going, so we don't need a page table any more... |
|
565 if(BeingDetached()) |
|
566 return 0; |
|
567 |
|
568 // get paged state... |
|
569 TBool demandPaged = false; |
|
570 if(!aPermanent) |
|
571 { |
|
572 DMemoryObject* memory = Memory(); |
|
573 __NK_ASSERT_DEBUG(memory); // can't be NULL because not BeingDetached() |
|
574 demandPaged = memory->IsDemandPaged(); |
|
575 } |
|
576 |
|
577 // get page table... |
|
578 TPte* pt = Mmu::PageTableFromPde(*aPdeAddress); |
|
579 if(pt!=0) |
|
580 { |
|
581 // we have a page table... |
|
582 __NK_ASSERT_DEBUG(SPageTableInfo::FromPtPtr(pt)->CheckFine(aAddr&~KChunkMask,iAllocatedLinAddrAndOsAsid&KPageMask)); |
|
583 if(aPermanent) |
|
584 { |
|
585 __NK_ASSERT_DEBUG(BeingDetached()==false); |
|
586 __NK_ASSERT_ALWAYS(!demandPaged); |
|
587 SPageTableInfo* pti = SPageTableInfo::FromPtPtr(pt); |
|
588 pti->IncPermanenceCount(); |
|
589 } |
|
590 return pt; |
|
591 } |
|
592 |
|
593 // allocate a new page table... |
|
594 MmuLock::Unlock(); |
|
595 ::PageTables.Lock(); |
|
596 TPte* newPt = ::PageTables.Alloc(demandPaged); |
|
597 if(!newPt) |
|
598 { |
|
599 // out of memory... |
|
600 ::PageTables.Unlock(); |
|
601 MmuLock::Lock(); |
|
602 return 0; |
|
603 } |
|
604 |
|
605 // check if new page table is still needed... |
|
606 MmuLock::Lock(); |
|
607 pt = Mmu::PageTableFromPde(*aPdeAddress); |
|
608 if(pt) |
|
609 { |
|
610 // someone else has already allocated a page table, |
|
611 // so free the one we just allocated and try again... |
|
612 MmuLock::Unlock(); |
|
613 ::PageTables.Free(newPt); |
|
614 } |
|
615 else if(BeingDetached()) |
|
616 { |
|
617 // mapping is going, so we don't need a page table any more... |
|
618 MmuLock::Unlock(); |
|
619 ::PageTables.Free(newPt); |
|
620 ::PageTables.Unlock(); |
|
621 MmuLock::Lock(); |
|
622 return 0; |
|
623 } |
|
624 else |
|
625 { |
|
626 // setup new page table... |
|
627 SPageTableInfo* pti = SPageTableInfo::FromPtPtr(newPt); |
|
628 pti->SetFine(aAddr&~KChunkMask,iAllocatedLinAddrAndOsAsid&KPageMask); |
|
629 |
|
630 TPde pde = Mmu::PageTablePhysAddr(newPt)|iBlankPde; |
|
631 TRACE2(("!PDE %x=%x",aPdeAddress,pde)); |
|
632 __NK_ASSERT_DEBUG(((*aPdeAddress^pde)&~KPdeMatchMask)==0 || *aPdeAddress==KPdeUnallocatedEntry); |
|
633 *aPdeAddress = pde; |
|
634 SinglePdeUpdated(aPdeAddress); |
|
635 |
|
636 MmuLock::Unlock(); |
|
637 } |
|
638 |
|
639 // loop back and recheck... |
|
640 ::PageTables.Unlock(); |
|
641 MmuLock::Lock(); |
|
642 } |
|
643 } |
|
644 |
|
645 |
|
646 void DFineMapping::FreePageTable(TPde* aPdeAddress) |
|
647 { |
|
648 TRACE2(("DFineMapping[0x%08x]::FreePageTable(0x%08x)",this,aPdeAddress)); |
|
649 |
|
650 // get page table lock... |
|
651 ::PageTables.Lock(); |
|
652 MmuLock::Lock(); |
|
653 |
|
654 // find page table... |
|
655 TPte* pt = Mmu::PageTableFromPde(*aPdeAddress); |
|
656 if(pt) |
|
657 { |
|
658 SPageTableInfo* pti = SPageTableInfo::FromPtPtr(pt); |
|
659 if(pti->PageCount() || pti->PermanenceCount()) |
|
660 { |
|
661 // page table still in use, so don't free it... |
|
662 pt = 0; |
|
663 } |
|
664 else |
|
665 { |
|
666 // page table not used, so unmap it... |
|
667 TPde pde = KPdeUnallocatedEntry; |
|
668 TRACE2(("!PDE %x=%x",aPdeAddress,pde)); |
|
669 *aPdeAddress = pde; |
|
670 SinglePdeUpdated(aPdeAddress); |
|
671 } |
|
672 } |
|
673 |
|
674 MmuLock::Unlock(); |
|
675 if(pt) |
|
676 ::PageTables.Free(pt); |
|
677 ::PageTables.Unlock(); |
|
678 } |
|
679 |
|
680 |
|
681 void DFineMapping::RemapPage(TPhysAddr& aPageArray, TUint aIndex, TUint aMapInstanceCount, TBool aInvalidateTLB) |
|
682 { |
|
683 TRACE2(("DFineMemoryMapping[0x%08x]::RemapPage(0x%x,0x%x,%d,%d)",this,aPageArray,aIndex,aMapInstanceCount,aInvalidateTLB)); |
|
684 |
|
685 __NK_ASSERT_DEBUG(aIndex >= iStartIndex); |
|
686 __NK_ASSERT_DEBUG(aIndex < iStartIndex + iSizeInPages); |
|
687 |
|
688 TLinAddr addr = Base() + ((aIndex - iStartIndex) << KPageShift); |
|
689 TUint pteIndex = (addr >> KPageShift) & (KChunkMask >> KPageShift); |
|
690 |
|
691 // get address of page table... |
|
692 MmuLock::Lock(); |
|
693 TPte* pPte = GetPageTable(addr); |
|
694 |
|
695 // check the page is still mapped and mapping isn't being detached |
|
696 // or hasn't been reused for another purpose... |
|
697 if(!pPte || BeingDetached() || aMapInstanceCount != MapInstanceCount()) |
|
698 { |
|
699 // can't map pages to this mapping any more so just exit. |
|
700 MmuLock::Unlock(); |
|
701 return; |
|
702 } |
|
703 |
|
704 // remap the page... |
|
705 pPte += pteIndex; |
|
706 Mmu::RemapPage(pPte, aPageArray, iBlankPte); |
|
707 MmuLock::Unlock(); |
|
708 |
|
709 #ifndef COARSE_GRAINED_TLB_MAINTENANCE |
|
710 // clean TLB... |
|
711 if (aInvalidateTLB) |
|
712 { |
|
713 InvalidateTLBForPage(addr + OsAsid()); |
|
714 } |
|
715 #endif |
|
716 } |
|
717 |
|
718 |
|
719 TInt DFineMapping::MapPages(RPageArray::TIter aPages, TUint aMapInstanceCount) |
|
720 { |
|
721 TRACE2(("DFineMapping[0x%08x]::MapPages(?,%d) index=0x%x count=0x%x",this,aMapInstanceCount,aPages.Index(),aPages.Count())); |
|
722 |
|
723 __NK_ASSERT_DEBUG(aPages.Count()); |
|
724 __NK_ASSERT_DEBUG(aPages.Index()>=iStartIndex); |
|
725 __NK_ASSERT_DEBUG(aPages.IndexEnd()-iStartIndex<=iSizeInPages); |
|
726 |
|
727 TLinAddr addr = Base()+(aPages.Index()-iStartIndex)*KPageSize; |
|
728 for(;;) |
|
729 { |
|
730 TUint pteIndex = (addr>>KPageShift)&(KChunkMask>>KPageShift); |
|
731 |
|
732 // calculate max number of pages to do... |
|
733 TUint n = (KChunkSize>>KPageShift)-pteIndex; // pages left in page table |
|
734 if(n>KMaxPagesInOneGo) |
|
735 n = KMaxPagesInOneGo; |
|
736 |
|
737 // get some pages... |
|
738 TPhysAddr* pages; |
|
739 n = aPages.Pages(pages,n); |
|
740 if(!n) |
|
741 break; |
|
742 |
|
743 // get address of page table... |
|
744 MmuLock::Lock(); |
|
745 TPte* pPte = GetOrAllocatePageTable(addr); |
|
746 |
|
747 // check mapping isn't being unmapped, or been reused for another purpose... |
|
748 if(BeingDetached() || aMapInstanceCount!=MapInstanceCount()) |
|
749 { |
|
750 // can't map pages to this mapping any more, so free any page table |
|
751 // we just got (if it's not used)... |
|
752 if(!pPte) |
|
753 MmuLock::Unlock(); |
|
754 else |
|
755 { |
|
756 SPageTableInfo* pti = SPageTableInfo::FromPtPtr(pPte); |
|
757 TBool keepPt = pti->PermanenceCount() || pti->PageCount(); |
|
758 MmuLock::Unlock(); |
|
759 if(!keepPt) |
|
760 FreePageTable(Mmu::PageDirectoryEntry(OsAsid(),addr)); |
|
761 } |
|
762 // then end... |
|
763 return KErrNone; |
|
764 } |
|
765 |
|
766 // check for OOM... |
|
767 if(!pPte) |
|
768 { |
|
769 MmuLock::Unlock(); |
|
770 return KErrNoMemory; |
|
771 } |
|
772 |
|
773 // map some pages... |
|
774 pPte += pteIndex; |
|
775 TBool keepPt = Mmu::MapPages(pPte, n, pages, iBlankPte); |
|
776 MmuLock::Unlock(); |
|
777 |
|
778 // free page table if no longer needed... |
|
779 if(!keepPt) |
|
780 FreePageTable(Mmu::PageDirectoryEntry(OsAsid(),addr)); |
|
781 |
|
782 // move on... |
|
783 aPages.Skip(n); |
|
784 addr += n*KPageSize; |
|
785 } |
|
786 |
|
787 return KErrNone; |
|
788 } |
|
789 |
|
790 |
|
791 void DFineMapping::UnmapPages(RPageArray::TIter aPages, TUint aMapInstanceCount) |
|
792 { |
|
793 TRACE2(("DFineMapping[0x%08x]::UnmapPages(?,%d) index=0x%x count=0x%x",this,aMapInstanceCount,aPages.Index(),aPages.Count())); |
|
794 |
|
795 __NK_ASSERT_DEBUG(aPages.Count()); |
|
796 |
|
797 TLinAddr addr = Base()+(aPages.Index()-iStartIndex)*KPageSize; |
|
798 #ifndef COARSE_GRAINED_TLB_MAINTENANCE |
|
799 TLinAddr startAddr = addr; |
|
800 #endif |
|
801 for(;;) |
|
802 { |
|
803 TUint pteIndex = (addr>>KPageShift)&(KChunkMask>>KPageShift); |
|
804 |
|
805 // calculate max number of pages to do... |
|
806 TUint n = (KChunkSize>>KPageShift)-pteIndex; // pages left in page table |
|
807 if(n>KMaxPagesInOneGo) |
|
808 n = KMaxPagesInOneGo; |
|
809 |
|
810 // get some pages... |
|
811 TPhysAddr* pages; |
|
812 n = aPages.Pages(pages,n); |
|
813 if(!n) |
|
814 break; |
|
815 |
|
816 MmuLock::Lock(); |
|
817 |
|
818 // check that mapping hasn't been reused for another purpose... |
|
819 if(aMapInstanceCount!=MapInstanceCount()) |
|
820 { |
|
821 MmuLock::Unlock(); |
|
822 break; |
|
823 } |
|
824 |
|
825 // get address of PTE for pages... |
|
826 TPde* pPde = Mmu::PageDirectoryEntry(OsAsid(),addr); |
|
827 TPte* pPte = Mmu::PageTableFromPde(*pPde); |
|
828 if(pPte) |
|
829 { |
|
830 // unmap some pages... |
|
831 pPte += pteIndex; |
|
832 TBool keepPt = Mmu::UnmapPages(pPte,n,pages); |
|
833 MmuLock::Unlock(); |
|
834 |
|
835 // free page table if no longer needed... |
|
836 if(!keepPt) |
|
837 FreePageTable(pPde); |
|
838 } |
|
839 else |
|
840 { |
|
841 // no page table found... |
|
842 MmuLock::Unlock(); |
|
843 } |
|
844 |
|
845 // move on... |
|
846 aPages.Skip(n); |
|
847 addr += n*KPageSize; |
|
848 } |
|
849 |
|
850 #ifndef COARSE_GRAINED_TLB_MAINTENANCE |
|
851 // clean TLB... |
|
852 TLinAddr endAddr = addr; |
|
853 addr = startAddr+OsAsid(); |
|
854 do InvalidateTLBForPage(addr); |
|
855 while((addr+=KPageSize)<endAddr); |
|
856 #endif |
|
857 } |
|
858 |
|
859 |
|
860 void DFineMapping::RestrictPagesNA(RPageArray::TIter aPages, TUint aMapInstanceCount) |
|
861 { |
|
862 TRACE2(("DFineMapping[0x%08x]::RestrictPages(?,%d) index=0x%x count=0x%x",this,aMapInstanceCount,aPages.Index(),aPages.Count())); |
|
863 |
|
864 __NK_ASSERT_DEBUG(aPages.Count()); |
|
865 |
|
866 TLinAddr addr = Base()+(aPages.Index()-iStartIndex)*KPageSize; |
|
867 #ifndef COARSE_GRAINED_TLB_MAINTENANCE |
|
868 TLinAddr startAddr = addr; |
|
869 #endif |
|
870 for(;;) |
|
871 { |
|
872 TUint pteIndex = (addr>>KPageShift)&(KChunkMask>>KPageShift); |
|
873 |
|
874 // calculate max number of pages to do... |
|
875 TUint n = (KChunkSize>>KPageShift)-pteIndex; // pages left in page table |
|
876 if(n>KMaxPagesInOneGo) |
|
877 n = KMaxPagesInOneGo; |
|
878 |
|
879 // get some pages... |
|
880 TPhysAddr* pages; |
|
881 n = aPages.Pages(pages,n); |
|
882 if(!n) |
|
883 break; |
|
884 |
|
885 MmuLock::Lock(); |
|
886 |
|
887 // check that mapping hasn't been reused for another purpose... |
|
888 if(aMapInstanceCount!=MapInstanceCount()) |
|
889 { |
|
890 MmuLock::Unlock(); |
|
891 break; |
|
892 } |
|
893 |
|
894 // get address of PTE for pages... |
|
895 TPde* pPde = Mmu::PageDirectoryEntry(OsAsid(),addr); |
|
896 TPte* pPte = Mmu::PageTableFromPde(*pPde); |
|
897 if(pPte) |
|
898 { |
|
899 // restrict some pages... |
|
900 pPte += pteIndex; |
|
901 Mmu::RestrictPagesNA(pPte,n,pages); |
|
902 } |
|
903 MmuLock::Unlock(); |
|
904 |
|
905 // move on... |
|
906 aPages.Skip(n); |
|
907 addr += n*KPageSize; |
|
908 } |
|
909 |
|
910 #ifndef COARSE_GRAINED_TLB_MAINTENANCE |
|
911 // clean TLB... |
|
912 TLinAddr endAddr = addr; |
|
913 addr = startAddr+OsAsid(); |
|
914 do InvalidateTLBForPage(addr); |
|
915 while((addr+=KPageSize)<endAddr); |
|
916 #endif |
|
917 } |
|
918 |
|
919 |
|
920 TInt DFineMapping::PageIn(RPageArray::TIter aPages, TPinArgs& aPinArgs, TUint aMapInstanceCount) |
|
921 { |
|
922 TRACE2(("DFineMapping[0x%08x]::PageIn(?,?,%d) index=0x%x count=0x%x",this,aMapInstanceCount,aPages.Index(),aPages.Count())); |
|
923 |
|
924 __NK_ASSERT_DEBUG(aPages.Count()); |
|
925 __NK_ASSERT_DEBUG(aPages.Index()>=iStartIndex); |
|
926 __NK_ASSERT_DEBUG(aPages.IndexEnd()-iStartIndex<=iSizeInPages); |
|
927 |
|
928 TInt r = KErrNone; |
|
929 |
|
930 TLinAddr addr = Base()+(aPages.Index()-iStartIndex)*KPageSize; |
|
931 #ifndef COARSE_GRAINED_TLB_MAINTENANCE |
|
932 TLinAddr startAddr = addr; |
|
933 #endif |
|
934 TBool pinPageTable = aPinArgs.iPinnedPageTables!=0; // check if we need to pin the first page table |
|
935 for(;;) |
|
936 { |
|
937 TUint pteIndex = (addr>>KPageShift)&(KChunkMask>>KPageShift); |
|
938 if(pteIndex==0) |
|
939 pinPageTable = aPinArgs.iPinnedPageTables!=0; // started a new page table, check if we need to pin it |
|
940 |
|
941 // calculate max number of pages to do... |
|
942 TUint n = (KChunkSize>>KPageShift)-pteIndex; // pages left in page table |
|
943 if(n>KMaxPagesInOneGo) |
|
944 n = KMaxPagesInOneGo; |
|
945 |
|
946 // get some pages... |
|
947 TPhysAddr* pages; |
|
948 n = aPages.Pages(pages,n); |
|
949 if(!n) |
|
950 break; |
|
951 |
|
952 // make sure we have memory to pin the page table if required... |
|
953 if(pinPageTable) |
|
954 aPinArgs.AllocReplacementPages(KNumPagesToPinOnePageTable); |
|
955 |
|
956 // get address of page table... |
|
957 MmuLock::Lock(); |
|
958 TPte* pPte; |
|
959 if(pinPageTable) |
|
960 pPte = GetOrAllocatePageTable(addr,aPinArgs); |
|
961 else |
|
962 pPte = GetOrAllocatePageTable(addr); |
|
963 |
|
964 // check mapping isn't being unmapped or hasn't been reused... |
|
965 if(BeingDetached() || aMapInstanceCount != MapInstanceCount()) |
|
966 { |
|
967 // can't map pages to this mapping any more, so free any page table |
|
968 // we just got (if it's not used)... |
|
969 if(!pPte) |
|
970 MmuLock::Unlock(); |
|
971 else |
|
972 { |
|
973 SPageTableInfo* pti = SPageTableInfo::FromPtPtr(pPte); |
|
974 TBool keepPt = pti->PermanenceCount() || pti->PageCount(); |
|
975 MmuLock::Unlock(); |
|
976 if(!keepPt) |
|
977 FreePageTable(Mmu::PageDirectoryEntry(OsAsid(),addr)); |
|
978 } |
|
979 // then end... |
|
980 r = KErrNotFound; |
|
981 break; |
|
982 } |
|
983 |
|
984 // check for OOM... |
|
985 if(!pPte) |
|
986 { |
|
987 MmuLock::Unlock(); |
|
988 r = KErrNoMemory; |
|
989 break; |
|
990 } |
|
991 |
|
992 // map some pages... |
|
993 pPte += pteIndex; |
|
994 TPte blankPte = iBlankPte; |
|
995 if(aPinArgs.iReadOnly) |
|
996 blankPte = Mmu::MakePteInaccessible(blankPte,true); |
|
997 TBool keepPt = Mmu::PageInPages(pPte, n, pages, blankPte); |
|
998 MmuLock::Unlock(); |
|
999 |
|
1000 // free page table if no longer needed... |
|
1001 if(!keepPt) |
|
1002 FreePageTable(Mmu::PageDirectoryEntry(OsAsid(),addr)); |
|
1003 |
|
1004 // move on... |
|
1005 aPages.Skip(n); |
|
1006 addr += n*KPageSize; |
|
1007 pinPageTable = false; |
|
1008 } |
|
1009 |
|
1010 #ifndef COARSE_GRAINED_TLB_MAINTENANCE |
|
1011 // clean TLB... |
|
1012 TLinAddr endAddr = addr; |
|
1013 addr = startAddr+OsAsid(); |
|
1014 do InvalidateTLBForPage(addr); |
|
1015 while((addr+=KPageSize)<endAddr); |
|
1016 #endif |
|
1017 return r; |
|
1018 } |
|
1019 |
|
1020 |
|
1021 TBool DFineMapping::MovingPageIn(TPhysAddr& aPageArrayPtr, TUint aIndex) |
|
1022 { |
|
1023 __NK_ASSERT_DEBUG(MmuLock::IsHeld()); |
|
1024 __NK_ASSERT_DEBUG(IsAttached()); |
|
1025 __NK_ASSERT_DEBUG(!BeingDetached()); |
|
1026 |
|
1027 TLinAddr addr = Base() + (aIndex - iStartIndex) * KPageSize; |
|
1028 TUint pteIndex = (addr >> KPageShift) & (KChunkMask >> KPageShift); |
|
1029 |
|
1030 // get address of page table... |
|
1031 TPte* pPte = GetPageTable(addr); |
|
1032 |
|
1033 // Check the page is still mapped. |
|
1034 if (!pPte) |
|
1035 return EFalse; |
|
1036 |
|
1037 // map some pages... |
|
1038 pPte += pteIndex; |
|
1039 Mmu::RemapPage(pPte, aPageArrayPtr, iBlankPte); |
|
1040 InvalidateTLBForPage(addr); |
|
1041 return ETrue; |
|
1042 } |
|
1043 |
|
1044 |
|
1045 TInt DFineMapping::DoMap() |
|
1046 { |
|
1047 TRACE(("DFineMapping[0x%08x]::DoMap()", this)); |
|
1048 DMemoryObject* memory = Memory(true); // safe because we're called from code which has added mapping to memory |
|
1049 if(memory->IsDemandPaged()) |
|
1050 { |
|
1051 // do nothing, allow pages to be mapped on demand... |
|
1052 return KErrNone; |
|
1053 } |
|
1054 |
|
1055 RPageArray::TIter pageIter; |
|
1056 memory->iPages.FindStart(iStartIndex,iSizeInPages,pageIter); |
|
1057 |
|
1058 // map pages... |
|
1059 TInt r = KErrNone; |
|
1060 for(;;) |
|
1061 { |
|
1062 // find some pages... |
|
1063 RPageArray::TIter pageList; |
|
1064 TUint n = pageIter.Find(pageList); |
|
1065 if(!n) |
|
1066 break; // done |
|
1067 |
|
1068 // map some pages... |
|
1069 r = MapPages(pageList,MapInstanceCount()); |
|
1070 |
|
1071 // done with pages... |
|
1072 pageIter.FindRelease(n); |
|
1073 |
|
1074 if(r!=KErrNone) |
|
1075 break; |
|
1076 } |
|
1077 |
|
1078 memory->iPages.FindEnd(iStartIndex,iSizeInPages); |
|
1079 return r; |
|
1080 } |
|
1081 |
|
1082 |
|
1083 void DFineMapping::DoUnmap() |
|
1084 { |
|
1085 TRACE2(("DFineMapping[0x%08x]::DoUnmap()",this)); |
|
1086 |
|
1087 TLinAddr startAddr = Base(); |
|
1088 TUint count = iSizeInPages; |
|
1089 TLinAddr addr = startAddr; |
|
1090 TPde* pPde = Mmu::PageDirectoryEntry(OsAsid(),addr); |
|
1091 |
|
1092 for(;;) |
|
1093 { |
|
1094 TUint pteIndex = (addr>>KPageShift)&(KChunkMask>>KPageShift); |
|
1095 |
|
1096 // calculate number of pages to do... |
|
1097 TUint n = (KChunkSize>>KPageShift)-pteIndex; // pages left in page table |
|
1098 if(n>count) |
|
1099 n = count; |
|
1100 |
|
1101 // get page table... |
|
1102 MmuLock::Lock(); |
|
1103 TPte* pPte = Mmu::PageTableFromPde(*pPde); |
|
1104 if(!pPte) |
|
1105 { |
|
1106 // no page table found, so nothing to do... |
|
1107 MmuLock::Unlock(); |
|
1108 } |
|
1109 else |
|
1110 { |
|
1111 // unmap some pages... |
|
1112 pPte += pteIndex; |
|
1113 if(n>KMaxPagesInOneGo) |
|
1114 n = KMaxPagesInOneGo; |
|
1115 TBool keepPt = Mmu::UnmapPages(pPte, n); |
|
1116 MmuLock::Unlock(); |
|
1117 |
|
1118 // free page table if no longer needed... |
|
1119 if(!keepPt) |
|
1120 FreePageTable(pPde); |
|
1121 } |
|
1122 |
|
1123 // move on... |
|
1124 addr += n*KPageSize; |
|
1125 count -= n; |
|
1126 if(!count) |
|
1127 break; |
|
1128 if(!(addr&KChunkMask)) |
|
1129 ++pPde; |
|
1130 } |
|
1131 |
|
1132 #ifdef COARSE_GRAINED_TLB_MAINTENANCE |
|
1133 InvalidateTLBForAsid(OsAsid()); |
|
1134 #else |
|
1135 // clean TLB... |
|
1136 TLinAddr endAddr = addr; |
|
1137 addr = LinAddrAndOsAsid(); |
|
1138 do InvalidateTLBForPage(addr); |
|
1139 while((addr+=KPageSize)<endAddr); |
|
1140 #endif |
|
1141 } |
|
1142 |
|
1143 |
|
1144 TInt DFineMapping::AllocatePermanentPageTables() |
|
1145 { |
|
1146 TRACE2(("DFineMapping[0x%08x]::AllocatePermanentPageTables()",this)); |
|
1147 __NK_ASSERT_DEBUG(((Flags()&EPageTablesAllocated)==0)); |
|
1148 __NK_ASSERT_DEBUG(iBlankPde); |
|
1149 |
|
1150 TLinAddr addr = iAllocatedLinAddrAndOsAsid&~KPageMask; |
|
1151 TInt osAsid = iAllocatedLinAddrAndOsAsid&KPageMask; |
|
1152 TPde* pStartPde = Mmu::PageDirectoryEntry(osAsid,addr); |
|
1153 TPde* pEndPde = Mmu::PageDirectoryEntry(osAsid,addr+iAllocatedSize-1); |
|
1154 TPde* pPde = pStartPde; |
|
1155 |
|
1156 while(pPde<=pEndPde) |
|
1157 { |
|
1158 MmuLock::Lock(); |
|
1159 TPte* pPte = AllocatePageTable(addr,pPde,true); |
|
1160 if(!pPte) |
|
1161 { |
|
1162 // out of memory... |
|
1163 MmuLock::Unlock(); |
|
1164 FreePermanentPageTables(pStartPde,pPde-1); |
|
1165 return KErrNoMemory; |
|
1166 } |
|
1167 MmuLock::Unlock(); |
|
1168 |
|
1169 addr += KChunkSize; |
|
1170 ++pPde; |
|
1171 } |
|
1172 |
|
1173 TRACE2(("DFineMapping[0x%08x]::AllocatePermanentPageTables() done",this)); |
|
1174 Flags() |= DMemoryMapping::EPageTablesAllocated; |
|
1175 return KErrNone; |
|
1176 } |
|
1177 |
|
1178 |
|
1179 void DFineMapping::FreePermanentPageTables(TPde* aFirstPde, TPde* aLastPde) |
|
1180 { |
|
1181 Flags() &= ~DMemoryMapping::EPageTablesAllocated; |
|
1182 |
|
1183 MmuLock::Lock(); |
|
1184 |
|
1185 TUint flash = 0; |
|
1186 TPde* pPde = aFirstPde; |
|
1187 while(pPde<=aLastPde) |
|
1188 { |
|
1189 TPte* pPte = Mmu::PageTableFromPde(*pPde); |
|
1190 __NK_ASSERT_DEBUG(pPte); |
|
1191 SPageTableInfo* pti = SPageTableInfo::FromPtPtr(pPte); |
|
1192 if(pti->DecPermanenceCount() || pti->PageCount()) |
|
1193 { |
|
1194 // still in use... |
|
1195 MmuLock::Flash(flash,KMaxPageInfoUpdatesInOneGo*2); |
|
1196 } |
|
1197 else |
|
1198 { |
|
1199 // page table no longer used for anything... |
|
1200 MmuLock::Unlock(); |
|
1201 FreePageTable(pPde); |
|
1202 MmuLock::Lock(); |
|
1203 } |
|
1204 |
|
1205 ++pPde; |
|
1206 } |
|
1207 |
|
1208 MmuLock::Unlock(); |
|
1209 } |
|
1210 |
|
1211 |
|
1212 void DFineMapping::FreePermanentPageTables() |
|
1213 { |
|
1214 if((Flags()&EPageTablesAllocated)==0) |
|
1215 return; |
|
1216 |
|
1217 TRACE2(("DFineMapping[0x%08x]::FreePermanentPageTables()",this)); |
|
1218 |
|
1219 TLinAddr addr = iAllocatedLinAddrAndOsAsid&~KPageMask; |
|
1220 TInt osAsid = iAllocatedLinAddrAndOsAsid&KPageMask; |
|
1221 TPde* pPde = Mmu::PageDirectoryEntry(osAsid,addr); |
|
1222 TPde* pEndPde = Mmu::PageDirectoryEntry(osAsid,addr+iAllocatedSize-1); |
|
1223 FreePermanentPageTables(pPde,pEndPde); |
|
1224 } |
|
1225 |
|
1226 |
|
1227 TPte* DFineMapping::FindPageTable(TLinAddr aLinAddr, TUint aMemoryIndex) |
|
1228 { |
|
1229 TRACE(("DFineMapping::FindPageTable(0x%x, %d)", aLinAddr, aMemoryIndex)); |
|
1230 __NK_ASSERT_DEBUG(MmuLock::IsHeld()); |
|
1231 __NK_ASSERT_DEBUG(IsAttached()); |
|
1232 return GetPageTable(aLinAddr); |
|
1233 } |
|
1234 |
|
1235 |
|
1236 |
|
1237 // |
|
1238 // DPhysicalPinMapping |
|
1239 // |
|
1240 |
|
1241 DPhysicalPinMapping::DPhysicalPinMapping() |
|
1242 : DMemoryMappingBase(EPinned|EPhysicalPinningMapping) |
|
1243 { |
|
1244 } |
|
1245 |
|
1246 |
|
1247 TInt DPhysicalPinMapping::PhysAddr(TUint aIndex, TUint aCount, TPhysAddr& aPhysicalAddress, TPhysAddr* aPhysicalPageList) |
|
1248 { |
|
1249 __NK_ASSERT_ALWAYS(IsAttached()); |
|
1250 |
|
1251 __NK_ASSERT_ALWAYS(TUint(aIndex+aCount)>aIndex && TUint(aIndex+aCount)<=iSizeInPages); |
|
1252 aIndex += iStartIndex; |
|
1253 |
|
1254 DCoarseMemory* memory = (DCoarseMemory*)Memory(true); // safe because we should only be called whilst memory is Pinned |
|
1255 TInt r = memory->PhysAddr(aIndex,aCount,aPhysicalAddress,aPhysicalPageList); |
|
1256 if(r!=KErrNone) |
|
1257 return r; |
|
1258 |
|
1259 if(memory->IsDemandPaged() && !IsReadOnly()) |
|
1260 { |
|
1261 // the memory is demand paged and writeable so we need to mark it as dirty |
|
1262 // as we have to assume that the memory will be modified via the physical |
|
1263 // addresses we return... |
|
1264 MmuLock::Lock(); |
|
1265 TPhysAddr* pages = aPhysicalPageList; |
|
1266 TUint count = aCount; |
|
1267 while(count) |
|
1268 { |
|
1269 SPageInfo* pi = SPageInfo::FromPhysAddr(*(pages++)); |
|
1270 pi->SetDirty(); |
|
1271 if((count&(KMaxPageInfoUpdatesInOneGo-1))==0) |
|
1272 MmuLock::Flash(); // flash lock every KMaxPageInfoUpdatesInOneGo iterations of the loop |
|
1273 --count; |
|
1274 } |
|
1275 MmuLock::Unlock(); |
|
1276 } |
|
1277 |
|
1278 return KErrNone; |
|
1279 } |
|
1280 |
|
1281 |
|
1282 TInt DPhysicalPinMapping::Pin(DMemoryObject* aMemory, TUint aIndex, TUint aCount, TMappingPermissions aPermissions) |
|
1283 { |
|
1284 PteType() = Mmu::PteType(aPermissions,true); |
|
1285 return Attach(aMemory,aIndex,aCount); |
|
1286 } |
|
1287 |
|
1288 |
|
1289 void DPhysicalPinMapping::Unpin() |
|
1290 { |
|
1291 Detach(); |
|
1292 } |
|
1293 |
|
1294 |
|
1295 TInt DPhysicalPinMapping::MapPages(RPageArray::TIter /*aPages*/, TUint /*aMapInstanceCount*/) |
|
1296 { |
|
1297 // shouldn't ever be called because these mappings are always pinned... |
|
1298 __NK_ASSERT_DEBUG(0); |
|
1299 return KErrNotSupported; |
|
1300 } |
|
1301 |
|
1302 |
|
1303 void DPhysicalPinMapping::UnmapPages(RPageArray::TIter /*aPages*/, TUint /*aMapInstanceCount*/) |
|
1304 { |
|
1305 // nothing to do... |
|
1306 } |
|
1307 |
|
1308 |
|
1309 void DPhysicalPinMapping::RemapPage(TPhysAddr& /*aPageArrayPtr*/, TUint /*aIndex*/, TUint /*aMapInstanceCount*/, TBool /*aInvalidateTLB*/) |
|
1310 { |
|
1311 // shouldn't ever be called because physically pinned mappings block page moving. |
|
1312 __NK_ASSERT_DEBUG(0); |
|
1313 } |
|
1314 |
|
1315 |
|
1316 void DPhysicalPinMapping::RestrictPagesNA(RPageArray::TIter /*aPages*/, TUint /*aMapInstanceCount*/) |
|
1317 { |
|
1318 // nothing to do... |
|
1319 } |
|
1320 |
|
1321 |
|
1322 TInt DPhysicalPinMapping::PageIn(RPageArray::TIter /*aPages*/, TPinArgs& /*aPinArgs*/, TUint /*aMapInstanceCount*/) |
|
1323 { |
|
1324 // nothing to do... |
|
1325 return KErrNone; |
|
1326 } |
|
1327 |
|
1328 |
|
1329 TInt DPhysicalPinMapping::MovingPageIn(TPhysAddr& /*aPageArrayPtr*/, TUint /*aIndex*/) |
|
1330 { |
|
1331 // Should never be asked to page in a page that is being moved as physical |
|
1332 // pin mappings don't own any page tables. |
|
1333 __NK_ASSERT_DEBUG(0); |
|
1334 return KErrAbort; |
|
1335 } |
|
1336 |
|
1337 TInt DPhysicalPinMapping::DoMap() |
|
1338 { |
|
1339 // nothing to do... |
|
1340 return KErrNone; |
|
1341 } |
|
1342 |
|
1343 |
|
1344 void DPhysicalPinMapping::DoUnmap() |
|
1345 { |
|
1346 // nothing to do... |
|
1347 } |
|
1348 |
|
1349 |
|
1350 |
|
1351 // |
|
1352 // DVirtualPinMapping |
|
1353 // |
|
1354 |
|
1355 DVirtualPinMapping::DVirtualPinMapping() |
|
1356 : iMaxCount(0) |
|
1357 { |
|
1358 // Clear flag so it is possible to distingish between virtual and physical pin mappings. |
|
1359 Flags() &= ~EPhysicalPinningMapping; |
|
1360 } |
|
1361 |
|
1362 |
|
1363 DVirtualPinMapping::~DVirtualPinMapping() |
|
1364 { |
|
1365 TRACE(("DVirtualPinMapping[0x%08x]::~DVirtualPinMapping()",this)); |
|
1366 FreePageTableArray(); |
|
1367 } |
|
1368 |
|
1369 |
|
1370 DVirtualPinMapping* DVirtualPinMapping::New(TUint aMaxCount) |
|
1371 { |
|
1372 TRACE(("DVirtualPinMapping::New(0x%x)",aMaxCount)); |
|
1373 DVirtualPinMapping* self = new DVirtualPinMapping; |
|
1374 if(aMaxCount) |
|
1375 { |
|
1376 // pages have been reserved for our use. |
|
1377 |
|
1378 // Create the array for storing pinned paged tables now, so we |
|
1379 // don't risk out-of-memory errors trying to do so later... |
|
1380 if(self->AllocPageTableArray(aMaxCount)!=KErrNone) |
|
1381 { |
|
1382 // failed, so cleanup... |
|
1383 self->Close(); |
|
1384 self = 0; |
|
1385 } |
|
1386 else |
|
1387 { |
|
1388 // success, so remember the pages that have been reserved for us... |
|
1389 self->iMaxCount = aMaxCount; |
|
1390 self->Flags() |= EPinningPagesReserved; |
|
1391 } |
|
1392 } |
|
1393 TRACE(("DVirtualPinMapping::New(0x%x) returns 0x%08x",aMaxCount,self)); |
|
1394 return self; |
|
1395 } |
|
1396 |
|
1397 |
|
1398 TUint DVirtualPinMapping::MaxPageTables(TUint aPageCount) |
|
1399 { |
|
1400 return (aPageCount+2*KChunkSize/KPageSize-2)>>(KChunkShift-KPageShift); |
|
1401 } |
|
1402 |
|
1403 |
|
1404 TInt DVirtualPinMapping::AllocPageTableArray(TUint aCount) |
|
1405 { |
|
1406 __NK_ASSERT_ALWAYS(iAllocatedPinnedPageTables==0); |
|
1407 TUint maxPt = MaxPageTables(aCount); |
|
1408 if(maxPt>KSmallPinnedPageTableCount) |
|
1409 { |
|
1410 iAllocatedPinnedPageTables = new TPte*[maxPt]; |
|
1411 if(!iAllocatedPinnedPageTables) |
|
1412 return KErrNoMemory; |
|
1413 } |
|
1414 return KErrNone; |
|
1415 } |
|
1416 |
|
1417 |
|
1418 void DVirtualPinMapping::FreePageTableArray() |
|
1419 { |
|
1420 delete [] iAllocatedPinnedPageTables; |
|
1421 iAllocatedPinnedPageTables = 0; |
|
1422 } |
|
1423 |
|
1424 |
|
1425 TPte** DVirtualPinMapping::PageTableArray() |
|
1426 { |
|
1427 return iAllocatedPinnedPageTables ? iAllocatedPinnedPageTables : iSmallPinnedPageTablesArray; |
|
1428 } |
|
1429 |
|
1430 |
|
1431 TInt DVirtualPinMapping::Pin( DMemoryObject* aMemory, TUint aIndex, TUint aCount, TMappingPermissions aPermissions, |
|
1432 DMemoryMappingBase* aMapping, TUint aMappingInstanceCount) |
|
1433 { |
|
1434 // Virtual pinning ensures a page is always mapped to a particular virtual address |
|
1435 // and therefore require a non-pinning mapping of the virtual address to pin. |
|
1436 __NK_ASSERT_ALWAYS(aMapping && !aMapping->IsPinned()); |
|
1437 |
|
1438 if(iMaxCount) |
|
1439 { |
|
1440 if(aCount>iMaxCount) |
|
1441 return KErrArgument; |
|
1442 } |
|
1443 else |
|
1444 { |
|
1445 TInt r = AllocPageTableArray(aCount); |
|
1446 if(r!=KErrNone) |
|
1447 return r; |
|
1448 } |
|
1449 |
|
1450 iPinVirtualMapping = aMapping; |
|
1451 iPinVirtualMapInstanceCount = aMappingInstanceCount; |
|
1452 TInt r = DPhysicalPinMapping::Pin(aMemory,aIndex,aCount,aPermissions); |
|
1453 iPinVirtualMapping = 0; |
|
1454 |
|
1455 return r; |
|
1456 } |
|
1457 |
|
1458 |
|
1459 void DVirtualPinMapping::Unpin() |
|
1460 { |
|
1461 Detach(); |
|
1462 } |
|
1463 |
|
1464 |
|
1465 void DVirtualPinMapping::UnpinPageTables(TPinArgs& aPinArgs) |
|
1466 { |
|
1467 TPte** pPt = PageTableArray(); |
|
1468 TPte** pPtEnd = pPt+iNumPinnedPageTables; |
|
1469 |
|
1470 MmuLock::Lock(); |
|
1471 while(pPt<pPtEnd) |
|
1472 PageTableAllocator::UnpinPageTable(*pPt++,aPinArgs); |
|
1473 MmuLock::Unlock(); |
|
1474 iNumPinnedPageTables = 0; |
|
1475 |
|
1476 if(!iMaxCount) |
|
1477 FreePageTableArray(); |
|
1478 } |
|
1479 |
|
1480 |
|
1481 void DVirtualPinMapping::RemapPage(TPhysAddr& /*aPageArrayPtr*/, TUint /*aIndex*/, TUint /*aMapInstanceCount*/, TBool /*aInvalidateTLB*/) |
|
1482 { |
|
1483 __NK_ASSERT_DEBUG(0); |
|
1484 } |
|
1485 |
|
1486 |
|
1487 TInt DVirtualPinMapping::PageIn(RPageArray::TIter aPages, TPinArgs& aPinArgs, TUint aMapInstanceCount) |
|
1488 { |
|
1489 if(iPinVirtualMapping) |
|
1490 return iPinVirtualMapping->PageIn(aPages, aPinArgs, iPinVirtualMapInstanceCount); |
|
1491 return KErrNone; |
|
1492 } |
|
1493 |
|
1494 |
|
1495 TInt DVirtualPinMapping::MovingPageIn(TPhysAddr& /*aPageArrayPtr*/, TUint /*aIndex*/) |
|
1496 { |
|
1497 // Should never be asked to page in a page that is being moved as virtual |
|
1498 // pin mappings don't own any page tables. |
|
1499 __NK_ASSERT_DEBUG(0); |
|
1500 return KErrAbort; |
|
1501 } |
|
1502 |
|
1503 |
|
1504 TInt DVirtualPinMapping::DoPin(TPinArgs& aPinArgs) |
|
1505 { |
|
1506 // setup for page table pinning... |
|
1507 aPinArgs.iPinnedPageTables = PageTableArray(); |
|
1508 |
|
1509 // do pinning... |
|
1510 TInt r = DPhysicalPinMapping::DoPin(aPinArgs); |
|
1511 |
|
1512 // save results... |
|
1513 iNumPinnedPageTables = aPinArgs.iNumPinnedPageTables; |
|
1514 __NK_ASSERT_DEBUG(iNumPinnedPageTables<=MaxPageTables(iSizeInPages)); |
|
1515 |
|
1516 // cleanup if error... |
|
1517 if(r!=KErrNone) |
|
1518 UnpinPageTables(aPinArgs); |
|
1519 |
|
1520 return r; |
|
1521 } |
|
1522 |
|
1523 |
|
1524 void DVirtualPinMapping::DoUnpin(TPinArgs& aPinArgs) |
|
1525 { |
|
1526 DPhysicalPinMapping::DoUnpin(aPinArgs); |
|
1527 UnpinPageTables(aPinArgs); |
|
1528 } |
|
1529 |
|
1530 |
|
1531 |
|
1532 // |
|
1533 // DMemoryMappingBase |
|
1534 // |
|
1535 |
|
1536 |
|
1537 DMemoryMappingBase::DMemoryMappingBase(TUint aType) |
|
1538 { |
|
1539 Flags() = aType; // rest of members cleared by DBase |
|
1540 } |
|
1541 |
|
1542 |
|
1543 TInt DMemoryMappingBase::Attach(DMemoryObject* aMemory, TUint aIndex, TUint aCount) |
|
1544 { |
|
1545 TRACE(("DMemoryMappingBase[0x%08x]::Attach(0x%08x,0x%x,0x%x)",this,aMemory,aIndex,aCount)); |
|
1546 __NK_ASSERT_DEBUG(!IsAttached()); |
|
1547 TInt r; |
|
1548 |
|
1549 if(++iMapInstanceCount>1) |
|
1550 {// This mapping is being reused... |
|
1551 |
|
1552 // Non-pinned mappings can be reused however this is only exercised |
|
1553 // by aligned shared buffers whose memory is managed by the unpaged |
|
1554 // or hardware memory manager. Reusing mappings to paged or movable |
|
1555 // memory hasn't tested and may need reusing mappings and its |
|
1556 // interactions with the fault handler, pinning etc to be tested. |
|
1557 __NK_ASSERT_DEBUG( IsPinned() || |
|
1558 aMemory->iManager == TheUnpagedMemoryManager || |
|
1559 aMemory->iManager == TheHardwareMemoryManager); |
|
1560 |
|
1561 // make sure new instance count is seen by other threads which may be operating |
|
1562 // on old mapping instance (this will stop them changing the mapping any more)... |
|
1563 MmuLock::Lock(); |
|
1564 MmuLock::Unlock(); |
|
1565 // clear unmapping flag from previous use... |
|
1566 __e32_atomic_and_ord16(&Flags(), (TUint16)~(EDetaching|EPageUnmapVetoed)); |
|
1567 } |
|
1568 |
|
1569 __NK_ASSERT_DEBUG((Flags()&(EDetaching|EPageUnmapVetoed))==0); |
|
1570 |
|
1571 // set region being mapped... |
|
1572 iStartIndex = aIndex; |
|
1573 iSizeInPages = aCount; |
|
1574 |
|
1575 // reserve any pages required for pinning demand paged memory. |
|
1576 // We must do this before we add the mapping to the memory object |
|
1577 // because once that is done the pages we are mapping will be prevented |
|
1578 // from being paged out. That could leave the paging system without |
|
1579 // enough pages to correctly handle page faults... |
|
1580 TPinArgs pinArgs; |
|
1581 pinArgs.iReadOnly = IsReadOnly(); |
|
1582 if(IsPinned() && aMemory->IsDemandPaged()) |
|
1583 { |
|
1584 pinArgs.iUseReserve = Flags()&EPinningPagesReserved; |
|
1585 r = pinArgs.AllocReplacementPages(aCount); |
|
1586 if(r!=KErrNone) |
|
1587 return r; |
|
1588 } |
|
1589 |
|
1590 // link into memory object... |
|
1591 r = aMemory->AddMapping(this); |
|
1592 if(r==KErrNone) |
|
1593 { |
|
1594 // pin pages if needed... |
|
1595 if(IsPinned()) |
|
1596 r = DoPin(pinArgs); |
|
1597 |
|
1598 // add pages to this mapping... |
|
1599 if(r==KErrNone) |
|
1600 r = DoMap(); |
|
1601 |
|
1602 // revert if error... |
|
1603 if(r!=KErrNone) |
|
1604 Detach(); |
|
1605 } |
|
1606 |
|
1607 // free any left over pinning pages... |
|
1608 pinArgs.FreeReplacementPages(); |
|
1609 |
|
1610 return r; |
|
1611 } |
|
1612 |
|
1613 |
|
1614 void DMemoryMappingBase::Detach() |
|
1615 { |
|
1616 TRACE(("DMemoryMappingBase[0x%08x]::Detach()",this)); |
|
1617 __NK_ASSERT_DEBUG(IsAttached()); |
|
1618 |
|
1619 // set EDetaching flag, which prevents anyone modifying pages in this |
|
1620 // mapping, except to remove them... |
|
1621 MmuLock::Lock(); |
|
1622 __e32_atomic_ior_ord16(&Flags(), (TUint16)EDetaching); |
|
1623 MmuLock::Unlock(); |
|
1624 |
|
1625 // remove all pages from this mapping... |
|
1626 DoUnmap(); |
|
1627 |
|
1628 // unpin pages if needed... |
|
1629 TPinArgs pinArgs; |
|
1630 if(IsPinned()) |
|
1631 DoUnpin(pinArgs); |
|
1632 |
|
1633 // unlink from memory object... |
|
1634 iMemory->RemoveMapping(this); |
|
1635 |
|
1636 // free any spare pages produced by unpinning... |
|
1637 pinArgs.FreeReplacementPages(); |
|
1638 } |
|
1639 |
|
1640 |
|
1641 TInt DMemoryMappingBase::DoPin(TPinArgs& aPinArgs) |
|
1642 { |
|
1643 DMemoryObject* memory = Memory(true); // safe because we're called from code which has added mapping to memory |
|
1644 return memory->iManager->Pin(memory,this,aPinArgs); |
|
1645 } |
|
1646 |
|
1647 |
|
1648 void DMemoryMappingBase::DoUnpin(TPinArgs& aPinArgs) |
|
1649 { |
|
1650 DMemoryObject* memory = Memory(true); // safe because we're called from code which will be removing this mapping from memory afterwards |
|
1651 memory->iManager->Unpin(memory,this,aPinArgs); |
|
1652 } |
|
1653 |
|
1654 |
|
1655 void DMemoryMappingBase::LinkToMemory(DMemoryObject* aMemory, TMappingList& aMappingList) |
|
1656 { |
|
1657 TRACE(("DMemoryMappingBase[0x%08x]::LinkToMemory(0x%08x,?)",this,aMemory)); |
|
1658 __NK_ASSERT_DEBUG(MmuLock::IsHeld()); |
|
1659 __NK_ASSERT_DEBUG(aMappingList.LockIsHeld()); |
|
1660 __NK_ASSERT_ALWAYS(!IsAttached()); |
|
1661 __NK_ASSERT_DEBUG(!BeingDetached()); |
|
1662 aMappingList.Add(this); |
|
1663 iMemory = aMemory; |
|
1664 iMemory->SetMappingAddedFlag(); |
|
1665 } |
|
1666 |
|
1667 |
|
1668 void DMemoryMappingBase::UnlinkFromMemory(TMappingList& aMappingList) |
|
1669 { |
|
1670 TRACE(("DMemoryMappingBase[0x%08x]::UnlinkMapping(?)",this)); |
|
1671 |
|
1672 // unlink... |
|
1673 MmuLock::Lock(); |
|
1674 aMappingList.Lock(); |
|
1675 __NK_ASSERT_DEBUG(IsAttached()); |
|
1676 __NK_ASSERT_DEBUG(BeingDetached()); |
|
1677 aMappingList.Remove(this); |
|
1678 DMemoryObject* memory = iMemory; |
|
1679 iMemory = 0; |
|
1680 aMappingList.Unlock(); |
|
1681 MmuLock::Unlock(); |
|
1682 |
|
1683 // if mapping had vetoed any page decommits... |
|
1684 if(Flags()&DMemoryMapping::EPageUnmapVetoed) |
|
1685 { |
|
1686 // then queue cleanup of decommitted pages... |
|
1687 memory->iManager->QueueCleanup(memory,DMemoryManager::ECleanupDecommitted); |
|
1688 } |
|
1689 } |
|
1690 |
|
1691 |
|
1692 |
|
1693 // |
|
1694 // Debug |
|
1695 // |
|
1696 |
|
1697 void DMemoryMappingBase::Dump() |
|
1698 { |
|
1699 #ifdef _DEBUG |
|
1700 Kern::Printf("DMemoryMappingBase[0x%08x]::Dump()",this); |
|
1701 Kern::Printf(" IsAttached() = %d",(bool)IsAttached()); |
|
1702 Kern::Printf(" iMemory = 0x%08x",iMemory); |
|
1703 Kern::Printf(" iStartIndex = 0x%x",iStartIndex); |
|
1704 Kern::Printf(" iSizeInPages = 0x%x",iSizeInPages); |
|
1705 Kern::Printf(" Flags() = 0x%x",Flags()); |
|
1706 Kern::Printf(" PteType() = 0x%x",PteType()); |
|
1707 #endif // _DEBUG |
|
1708 } |
|
1709 |
|
1710 |
|
1711 void DMemoryMapping::Dump() |
|
1712 { |
|
1713 #ifdef _DEBUG |
|
1714 Kern::Printf("DMemoryMapping[0x%08x]::Dump()",this); |
|
1715 Kern::Printf(" Base() = 0x08%x",iLinAddrAndOsAsid&~KPageMask); |
|
1716 Kern::Printf(" OsAsid() = %d",iLinAddrAndOsAsid&KPageMask); |
|
1717 Kern::Printf(" iBlankPde = 0x%08x",iBlankPde); |
|
1718 Kern::Printf(" iBlankPte = 0x%08x",iBlankPte); |
|
1719 Kern::Printf(" iAllocatedLinAddrAndOsAsid = 0x%08x",iAllocatedLinAddrAndOsAsid); |
|
1720 Kern::Printf(" iAllocatedSize = 0x%x",iAllocatedSize); |
|
1721 DMemoryMappingBase::Dump(); |
|
1722 #endif // _DEBUG |
|
1723 } |
|
1724 |
|
1725 |
|
1726 void DVirtualPinMapping::Dump() |
|
1727 { |
|
1728 #ifdef _DEBUG |
|
1729 Kern::Printf("DVirtualPinMapping[0x%08x]::Dump()",this); |
|
1730 Kern::Printf(" iMaxCount = %d",iMaxCount); |
|
1731 Kern::Printf(" iNumPinnedPageTables = %d",iNumPinnedPageTables); |
|
1732 DMemoryMappingBase::Dump(); |
|
1733 #endif // _DEBUG |
|
1734 } |
|
1735 |