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1 // Copyright (c) 2002-2009 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 // e32\include\drivers\dma.inl |
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15 // DMA framework public inline functions |
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16 // This file should not be modified when porting the DMA framework to |
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17 // new hardware. |
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18 // TDmaChannel |
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19 // |
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20 // WARNING: This file contains some APIs which are internal and are subject |
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21 // to change without noticed. Such APIs should therefore not be used |
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22 // outside the Kernel and Hardware Services package. |
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23 // |
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24 |
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25 inline void TDmaChannel::Wait() |
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26 { |
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27 NKern::FMWait(&iLock); |
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28 } |
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29 |
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30 inline void TDmaChannel::Signal() |
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31 { |
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32 NKern::FMSignal(&iLock); |
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33 } |
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34 |
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35 inline TBool TDmaChannel::Flash() |
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36 { |
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37 return NKern::FMFlash(&iLock); |
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38 } |
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39 |
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40 inline TBool TDmaChannel::IsOpened() const |
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41 { |
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42 return iController != NULL; |
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43 } |
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44 |
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45 inline TBool TDmaChannel::IsQueueEmpty() const |
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46 { |
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47 return const_cast<TDmaChannel*>(this)->iReqQ.IsEmpty(); |
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48 } |
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49 |
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50 inline TUint32 TDmaChannel::PslId() const |
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51 { |
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52 return iPslId; |
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53 } |
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54 |
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55 inline TInt TDmaChannel::FailNext(TInt /*aFragmentCount*/) |
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56 { |
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57 return iController->FailNext(*this); |
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58 } |
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59 |
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60 inline TInt TDmaChannel::MissNextInterrupts(TInt aInterruptCount) |
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61 { |
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62 return iController->MissNextInterrupts(*this, aInterruptCount); |
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63 } |
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64 |
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65 /** Function allowing platform-specific layer to extend API with new |
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66 channel-specific operations. |
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67 @param aCmd Command identifier. Negative values are reserved for Symbian use. |
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68 @param aArg PSL-specific |
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69 @return KErrNotSupported if aCmd is not supported. PSL-specific value otherwise. |
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70 */ |
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71 |
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72 inline TInt TDmaChannel::Extension(TInt aCmd, TAny* aArg) |
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73 { |
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74 return iController->Extension(*this, aCmd, aArg); |
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75 } |
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76 |
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77 inline const TDmac* TDmaChannel::Controller() const |
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78 { |
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79 return iController; |
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80 } |
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81 |
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82 inline TInt TDmaChannel::MaxTransferSize(TUint aFlags, TUint32 aPslInfo) |
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83 { |
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84 return iController->MaxTransferSize(*this, aFlags, aPslInfo); |
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85 } |
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86 |
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87 inline TUint TDmaChannel::MemAlignMask(TUint aFlags, TUint32 aPslInfo) |
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88 { |
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89 return iController->MemAlignMask(*this, aFlags, aPslInfo); |
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90 } |
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91 |
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92 // DDmaRequest |
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93 |
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94 /** Called when request is removed from request queue in channel */ |
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95 |
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96 inline void DDmaRequest::OnDeque() |
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97 { |
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98 iQueued = EFalse; |
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99 iLastHdr->iNext = NULL; |
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100 iChannel.DoUnlink(*iLastHdr); |
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101 } |
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102 |
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103 // TDmac |
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104 |
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105 inline void TDmac::Wait() |
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106 { |
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107 NKern::FMWait(&iLock); |
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108 } |
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109 |
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110 inline void TDmac::Signal() |
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111 { |
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112 NKern::FMSignal(&iLock); |
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113 } |
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114 |
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115 inline SDmaPseudoDes& TDmac::HdrToDes(const SDmaDesHdr& aHdr) const |
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116 { |
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117 return static_cast<SDmaPseudoDes*>(iDesPool)[&aHdr - iHdrPool]; |
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118 } |
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119 |
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120 inline TAny* TDmac::HdrToHwDes(const SDmaDesHdr& aHdr) const |
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121 { |
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122 return static_cast<TUint8*>(iDesPool) + iDesSize*(&aHdr - iHdrPool); |
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123 } |
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124 |
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125 inline TUint32 TDmac::DesLinToPhys(TAny* aDes) const |
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126 { |
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127 #ifdef __WINS__ |
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128 (void)aDes; |
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129 return 0xDEADBEEF; |
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130 #else |
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131 return iHwDesChunk->iPhysAddr + ((TLinAddr)aDes - iHwDesChunk->iLinAddr); |
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132 #endif |
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133 } |
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134 |
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135 // DmaChannelMgr |
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136 |
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137 inline void DmaChannelMgr::Wait() |
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138 { |
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139 NKern::FMWait(&Lock); |
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140 } |
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141 |
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142 inline void DmaChannelMgr::Signal() |
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143 { |
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144 NKern::FMSignal(&Lock); |
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145 } |
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146 |
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147 //--- |