1 | /** @file
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2 |
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3 | The library provides the USB Standard Device Requests defined
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4 | in Usb specification 9.4 section.
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5 |
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6 | Copyright (c) 2004 - 2018, Intel Corporation. All rights reserved.<BR>
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7 | SPDX-License-Identifier: BSD-2-Clause-Patent
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8 |
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9 | **/
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10 |
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11 | #include "UefiUsbLibInternal.h"
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12 |
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13 | /**
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14 | Get the descriptor of the specified USB device.
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15 |
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16 | Submit a USB get descriptor request for the USB device specified by UsbIo, Value,
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17 | and Index, and return the descriptor in the buffer specified by Descriptor.
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18 | The status of the transfer is returned in Status.
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19 | If UsbIo is NULL, then ASSERT().
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20 | If Descriptor is NULL, then ASSERT().
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21 | If Status is NULL, then ASSERT().
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22 |
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23 | @param UsbIo A pointer to the USB I/O Protocol instance for the specific USB target.
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24 | @param Value The device request value.
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25 | @param Index The device request index.
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26 | @param DescriptorLength The size, in bytes, of Descriptor.
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27 | @param Descriptor A pointer to the descriptor buffer to get.
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28 | @param Status A pointer to the status of the transfer.
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29 |
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30 | @retval EFI_SUCCESS The request executed successfully.
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31 | @retval EFI_OUT_OF_RESOURCES The request could not be completed because the
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32 | buffer specified by DescriptorLength and Descriptor
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33 | is not large enough to hold the result of the request.
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34 | @retval EFI_TIMEOUT A timeout occurred executing the request.
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35 | @retval EFI_DEVICE_ERROR The request failed due to a device error. The transfer
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36 | status is returned in Status.
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37 |
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38 | **/
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39 | EFI_STATUS
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40 | EFIAPI
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41 | UsbGetDescriptor (
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42 | IN EFI_USB_IO_PROTOCOL *UsbIo,
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43 | IN UINT16 Value,
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44 | IN UINT16 Index,
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45 | IN UINT16 DescriptorLength,
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46 | OUT VOID *Descriptor,
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47 | OUT UINT32 *Status
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48 | )
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49 | {
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50 | EFI_USB_DEVICE_REQUEST DevReq;
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51 |
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52 | ASSERT (UsbIo != NULL);
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53 | ASSERT (Descriptor != NULL);
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54 | ASSERT (Status != NULL);
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55 |
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56 | ZeroMem (&DevReq, sizeof (EFI_USB_DEVICE_REQUEST));
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57 |
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58 | DevReq.RequestType = USB_DEV_GET_DESCRIPTOR_REQ_TYPE;
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59 | DevReq.Request = USB_REQ_GET_DESCRIPTOR;
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60 | DevReq.Value = Value;
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61 | DevReq.Index = Index;
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62 | DevReq.Length = DescriptorLength;
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63 |
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64 | return UsbIo->UsbControlTransfer (
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65 | UsbIo,
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66 | &DevReq,
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67 | EfiUsbDataIn,
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68 | PcdGet32 (PcdUsbTransferTimeoutValue),
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69 | Descriptor,
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70 | DescriptorLength,
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71 | Status
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72 | );
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73 | }
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74 |
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75 | /**
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76 | Set the descriptor of the specified USB device.
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77 |
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78 | Submit a USB set descriptor request for the USB device specified by UsbIo,
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79 | Value, and Index, and set the descriptor using the buffer specified by DesriptorLength
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80 | and Descriptor. The status of the transfer is returned in Status.
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81 | If UsbIo is NULL, then ASSERT().
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82 | If Descriptor is NULL, then ASSERT().
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83 | If Status is NULL, then ASSERT().
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84 |
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85 | @param UsbIo A pointer to the USB I/O Protocol instance for the specific USB target.
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86 | @param Value The device request value.
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87 | @param Index The device request index.
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88 | @param DescriptorLength The size, in bytes, of Descriptor.
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89 | @param Descriptor A pointer to the descriptor buffer to set.
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90 | @param Status A pointer to the status of the transfer.
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91 |
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92 | @retval EFI_SUCCESS The request executed successfully.
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93 | @retval EFI_TIMEOUT A timeout occurred executing the request.
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94 | @retval EFI_DEVICE_ERROR The request failed due to a device error.
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95 | The transfer status is returned in Status.
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96 |
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97 | **/
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98 | EFI_STATUS
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99 | EFIAPI
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100 | UsbSetDescriptor (
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101 | IN EFI_USB_IO_PROTOCOL *UsbIo,
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102 | IN UINT16 Value,
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103 | IN UINT16 Index,
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104 | IN UINT16 DescriptorLength,
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105 | IN VOID *Descriptor,
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106 | OUT UINT32 *Status
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107 | )
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108 | {
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109 | EFI_USB_DEVICE_REQUEST DevReq;
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110 |
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111 | ASSERT (UsbIo != NULL);
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112 | ASSERT (Descriptor != NULL);
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113 | ASSERT (Status != NULL);
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114 |
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115 | ZeroMem (&DevReq, sizeof (EFI_USB_DEVICE_REQUEST));
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116 |
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117 | DevReq.RequestType = USB_DEV_SET_DESCRIPTOR_REQ_TYPE;
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118 | DevReq.Request = USB_REQ_SET_DESCRIPTOR;
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119 | DevReq.Value = Value;
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120 | DevReq.Index = Index;
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121 | DevReq.Length = DescriptorLength;
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122 |
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123 | return UsbIo->UsbControlTransfer (
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124 | UsbIo,
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125 | &DevReq,
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126 | EfiUsbDataOut,
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127 | PcdGet32 (PcdUsbTransferTimeoutValue),
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128 | Descriptor,
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129 | DescriptorLength,
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130 | Status
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131 | );
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132 | }
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133 |
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134 | /**
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135 | Get the interface setting of the specified USB device.
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136 |
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137 | Submit a USB get interface request for the USB device specified by UsbIo,
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138 | and Interface, and place the result in the buffer specified by AlternateSetting.
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139 | The status of the transfer is returned in Status.
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140 | If UsbIo is NULL, then ASSERT().
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141 | If AlternateSetting is NULL, then ASSERT().
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142 | If Status is NULL, then ASSERT().
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143 |
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144 | @param UsbIo A pointer to the USB I/O Protocol instance for the specific USB target.
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145 | @param Interface The interface index value.
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146 | @param AlternateSetting A pointer to the alternate setting to be retrieved.
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147 | @param Status A pointer to the status of the transfer.
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148 |
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149 | @retval EFI_SUCCESS The request executed successfully.
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150 | @retval EFI_TIMEOUT A timeout occurred executing the request.
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151 | @retval EFI_DEVICE_ERROR The request failed due to a device error.
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152 | The transfer status is returned in Status.
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153 |
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154 | **/
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155 | EFI_STATUS
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156 | EFIAPI
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157 | UsbGetInterface (
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158 | IN EFI_USB_IO_PROTOCOL *UsbIo,
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159 | IN UINT16 Interface,
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160 | OUT UINT16 *AlternateSetting,
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161 | OUT UINT32 *Status
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162 | )
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163 | {
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164 | EFI_USB_DEVICE_REQUEST DevReq;
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165 |
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166 | ASSERT (UsbIo != NULL);
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167 | ASSERT (AlternateSetting != NULL);
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168 | ASSERT (Status != NULL);
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169 |
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170 | *AlternateSetting = 0;
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171 |
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172 | ZeroMem (&DevReq, sizeof (EFI_USB_DEVICE_REQUEST));
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173 |
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174 | DevReq.RequestType = USB_DEV_GET_INTERFACE_REQ_TYPE;
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175 | DevReq.Request = USB_REQ_GET_INTERFACE;
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176 | DevReq.Index = Interface;
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177 | DevReq.Length = 1;
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178 |
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179 | return UsbIo->UsbControlTransfer (
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180 | UsbIo,
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181 | &DevReq,
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182 | EfiUsbDataIn,
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183 | PcdGet32 (PcdUsbTransferTimeoutValue),
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184 | AlternateSetting,
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185 | 1,
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186 | Status
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187 | );
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188 | }
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189 |
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190 | /**
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191 | Set the interface setting of the specified USB device.
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192 |
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193 | Submit a USB set interface request for the USB device specified by UsbIo, and
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194 | Interface, and set the alternate setting to the value specified by AlternateSetting.
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195 | The status of the transfer is returned in Status.
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196 | If UsbIo is NULL, then ASSERT().
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197 | If Status is NULL, then ASSERT().
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198 |
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199 | @param UsbIo A pointer to the USB I/O Protocol instance for the specific USB target.
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200 | @param Interface The interface index value.
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201 | @param AlternateSetting The alternate setting to be set.
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202 | @param Status A pointer to the status of the transfer.
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203 |
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204 | @retval EFI_SUCCESS The request executed successfully.
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205 | @retval EFI_TIMEOUT A timeout occurred executing the request.
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206 | @retval EFI_SUCCESS The request failed due to a device error.
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207 | The transfer status is returned in Status.
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208 |
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209 | **/
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210 | EFI_STATUS
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211 | EFIAPI
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212 | UsbSetInterface (
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213 | IN EFI_USB_IO_PROTOCOL *UsbIo,
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214 | IN UINT16 Interface,
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215 | IN UINT16 AlternateSetting,
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216 | OUT UINT32 *Status
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217 | )
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218 | {
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219 | EFI_USB_DEVICE_REQUEST DevReq;
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220 |
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221 | ASSERT (UsbIo != NULL);
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222 | ASSERT (Status != NULL);
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223 |
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224 | ZeroMem (&DevReq, sizeof (EFI_USB_DEVICE_REQUEST));
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225 |
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226 | DevReq.RequestType = USB_DEV_SET_INTERFACE_REQ_TYPE;
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227 | DevReq.Request = USB_REQ_SET_INTERFACE;
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228 | DevReq.Value = AlternateSetting;
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229 | DevReq.Index = Interface;
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230 |
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231 | return UsbIo->UsbControlTransfer (
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232 | UsbIo,
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233 | &DevReq,
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234 | EfiUsbNoData,
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235 | PcdGet32 (PcdUsbTransferTimeoutValue),
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236 | NULL,
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237 | 0,
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238 | Status
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239 | );
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240 | }
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241 |
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242 | /**
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243 | Get the device configuration.
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244 |
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245 | Submit a USB get configuration request for the USB device specified by UsbIo
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246 | and place the result in the buffer specified by ConfigurationValue. The status
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247 | of the transfer is returned in Status.
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248 | If UsbIo is NULL, then ASSERT().
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249 | If ConfigurationValue is NULL, then ASSERT().
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250 | If Status is NULL, then ASSERT().
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251 |
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252 | @param UsbIo A pointer to the USB I/O Protocol instance for the specific USB target.
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253 | @param ConfigurationValue A pointer to the device configuration to be retrieved.
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254 | @param Status A pointer to the status of the transfer.
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255 |
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256 | @retval EFI_SUCCESS The request executed successfully.
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257 | @retval EFI_TIMEOUT A timeout occurred executing the request.
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258 | @retval EFI_DEVICE_ERROR The request failed due to a device error.
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259 | The transfer status is returned in Status.
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260 |
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261 | **/
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262 | EFI_STATUS
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263 | EFIAPI
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264 | UsbGetConfiguration (
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265 | IN EFI_USB_IO_PROTOCOL *UsbIo,
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266 | OUT UINT16 *ConfigurationValue,
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267 | OUT UINT32 *Status
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268 | )
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269 | {
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270 | EFI_USB_DEVICE_REQUEST DevReq;
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271 |
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272 | ASSERT (UsbIo != NULL);
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273 | ASSERT (ConfigurationValue != NULL);
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274 | ASSERT (Status != NULL);
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275 |
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276 | *ConfigurationValue = 0;
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277 |
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278 | ZeroMem (&DevReq, sizeof (EFI_USB_DEVICE_REQUEST));
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279 |
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280 | DevReq.RequestType = USB_DEV_GET_CONFIGURATION_REQ_TYPE;
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281 | DevReq.Request = USB_REQ_GET_CONFIG;
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282 | DevReq.Length = 1;
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283 |
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284 | return UsbIo->UsbControlTransfer (
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285 | UsbIo,
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286 | &DevReq,
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287 | EfiUsbDataIn,
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288 | PcdGet32 (PcdUsbTransferTimeoutValue),
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289 | ConfigurationValue,
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290 | 1,
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291 | Status
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292 | );
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293 | }
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294 |
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295 | /**
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296 | Set the device configuration.
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297 |
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298 | Submit a USB set configuration request for the USB device specified by UsbIo
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299 | and set the device configuration to the value specified by ConfigurationValue.
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300 | The status of the transfer is returned in Status.
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301 | If UsbIo is NULL, then ASSERT().
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302 | If Status is NULL, then ASSERT().
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303 |
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304 | @param UsbIo A pointer to the USB I/O Protocol instance for the specific USB target.
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305 | @param ConfigurationValue The device configuration value to be set.
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306 | @param Status A pointer to the status of the transfer.
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307 |
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308 | @retval EFI_SUCCESS The request executed successfully.
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309 | @retval EFI_TIMEOUT A timeout occurred executing the request.
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310 | @retval EFI_DEVICE_ERROR The request failed due to a device error.
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311 | The transfer status is returned in Status.
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312 |
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313 | **/
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314 | EFI_STATUS
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315 | EFIAPI
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316 | UsbSetConfiguration (
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317 | IN EFI_USB_IO_PROTOCOL *UsbIo,
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318 | IN UINT16 ConfigurationValue,
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319 | OUT UINT32 *Status
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320 | )
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321 | {
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322 | EFI_USB_DEVICE_REQUEST DevReq;
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323 |
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324 | ASSERT (UsbIo != NULL);
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325 | ASSERT (Status != NULL);
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326 |
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327 | ZeroMem (&DevReq, sizeof (EFI_USB_DEVICE_REQUEST));
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328 |
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329 | DevReq.RequestType = USB_DEV_SET_CONFIGURATION_REQ_TYPE;
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330 | DevReq.Request = USB_REQ_SET_CONFIG;
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331 | DevReq.Value = ConfigurationValue;
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332 |
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333 | return UsbIo->UsbControlTransfer (
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334 | UsbIo,
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335 | &DevReq,
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336 | EfiUsbNoData,
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337 | PcdGet32 (PcdUsbTransferTimeoutValue),
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338 | NULL,
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339 | 0,
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340 | Status
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341 | );
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342 | }
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343 |
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344 | /**
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345 | Set the specified feature of the specified device.
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346 |
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347 | Submit a USB set device feature request for the USB device specified by UsbIo,
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348 | Recipient, and Target to the value specified by Value. The status of the
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349 | transfer is returned in Status.
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350 | If UsbIo is NULL, then ASSERT().
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351 | If Status is NULL, then ASSERT().
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352 |
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353 | @param UsbIo A pointer to the USB I/O Protocol instance for the specific USB target.
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354 | @param Recipient The USB data recipient type (i.e. Device, Interface, Endpoint).
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355 | Type USB_TYPES_DEFINITION is defined in the MDE Package Industry
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356 | Standard include file Usb.h.
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357 | @param Value The value of the feature to be set.
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358 | @param Target The index of the device to be set.
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359 | @param Status A pointer to the status of the transfer.
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360 |
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361 | @retval EFI_SUCCESS The request executed successfully.
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362 | @retval EFI_TIMEOUT A timeout occurred executing the request.
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363 | @retval EFI_DEVICE_ERROR The request failed due to a device error.
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364 | The transfer status is returned in Status.
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365 |
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366 | **/
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367 | EFI_STATUS
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368 | EFIAPI
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369 | UsbSetFeature (
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370 | IN EFI_USB_IO_PROTOCOL *UsbIo,
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371 | IN USB_TYPES_DEFINITION Recipient,
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372 | IN UINT16 Value,
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373 | IN UINT16 Target,
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374 | OUT UINT32 *Status
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375 | )
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376 | {
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377 | EFI_USB_DEVICE_REQUEST DevReq;
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378 |
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379 | ASSERT (UsbIo != NULL);
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380 | ASSERT (Status != NULL);
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381 |
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382 | ZeroMem (&DevReq, sizeof (EFI_USB_DEVICE_REQUEST));
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383 |
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384 | switch (Recipient) {
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385 | case USB_TARGET_DEVICE:
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386 | DevReq.RequestType = USB_DEV_SET_FEATURE_REQ_TYPE_D;
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387 | break;
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388 |
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389 | case USB_TARGET_INTERFACE:
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390 | DevReq.RequestType = USB_DEV_SET_FEATURE_REQ_TYPE_I;
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391 | break;
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392 |
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393 | case USB_TARGET_ENDPOINT:
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394 | DevReq.RequestType = USB_DEV_SET_FEATURE_REQ_TYPE_E;
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395 | break;
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396 |
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397 | default:
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398 | break;
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399 | }
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400 |
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401 | //
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402 | // Fill device request, see USB1.1 spec
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403 | //
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404 | DevReq.Request = USB_REQ_SET_FEATURE;
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405 | DevReq.Value = Value;
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406 | DevReq.Index = Target;
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407 |
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408 | return UsbIo->UsbControlTransfer (
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409 | UsbIo,
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410 | &DevReq,
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411 | EfiUsbNoData,
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412 | PcdGet32 (PcdUsbTransferTimeoutValue),
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413 | NULL,
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414 | 0,
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415 | Status
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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 | Clear the specified feature of the specified device.
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421 |
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422 | Submit a USB clear device feature request for the USB device specified by UsbIo,
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423 | Recipient, and Target to the value specified by Value. The status of the transfer
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424 | is returned in Status.
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425 | If UsbIo is NULL, then ASSERT().
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426 | If Status is NULL, then ASSERT().
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427 |
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428 | @param UsbIo A pointer to the USB I/O Protocol instance for the specific USB target.
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429 | @param Recipient The USB data recipient type (i.e. Device, Interface, Endpoint).
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430 | Type USB_TYPES_DEFINITION is defined in the MDE Package Industry Standard
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431 | include file Usb.h.
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432 | @param Value The value of the feature to be cleared.
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433 | @param Target The index of the device to be cleared.
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434 | @param Status A pointer to the status of the transfer.
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435 |
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436 | @retval EFI_SUCCESS The request executed successfully.
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437 | @retval EFI_TIMEOUT A timeout occurred executing the request.
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438 | @retval EFI_DEVICE_ERROR The request failed due to a device error.
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439 | The transfer status is returned in Status.
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440 |
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441 | **/
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442 | EFI_STATUS
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443 | EFIAPI
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444 | UsbClearFeature (
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445 | IN EFI_USB_IO_PROTOCOL *UsbIo,
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446 | IN USB_TYPES_DEFINITION Recipient,
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447 | IN UINT16 Value,
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448 | IN UINT16 Target,
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449 | OUT UINT32 *Status
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450 | )
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451 | {
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452 | EFI_USB_DEVICE_REQUEST DevReq;
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453 |
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454 | ASSERT (UsbIo != NULL);
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455 | ASSERT (Status != NULL);
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456 |
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457 | ZeroMem (&DevReq, sizeof (EFI_USB_DEVICE_REQUEST));
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458 |
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459 | switch (Recipient) {
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460 | case USB_TARGET_DEVICE:
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461 | DevReq.RequestType = USB_DEV_CLEAR_FEATURE_REQ_TYPE_D;
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462 | break;
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463 |
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464 | case USB_TARGET_INTERFACE:
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465 | DevReq.RequestType = USB_DEV_CLEAR_FEATURE_REQ_TYPE_I;
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466 | break;
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467 |
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468 | case USB_TARGET_ENDPOINT:
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469 | DevReq.RequestType = USB_DEV_CLEAR_FEATURE_REQ_TYPE_E;
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470 | break;
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471 |
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472 | default:
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473 | break;
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474 | }
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475 |
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476 | //
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477 | // Fill device request, see USB1.1 spec
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478 | //
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479 | DevReq.Request = USB_REQ_CLEAR_FEATURE;
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480 | DevReq.Value = Value;
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481 | DevReq.Index = Target;
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482 |
|
---|
483 | return UsbIo->UsbControlTransfer (
|
---|
484 | UsbIo,
|
---|
485 | &DevReq,
|
---|
486 | EfiUsbNoData,
|
---|
487 | PcdGet32 (PcdUsbTransferTimeoutValue),
|
---|
488 | NULL,
|
---|
489 | 0,
|
---|
490 | Status
|
---|
491 | );
|
---|
492 | }
|
---|
493 |
|
---|
494 | /**
|
---|
495 | Get the status of the specified device.
|
---|
496 |
|
---|
497 | Submit a USB device get status request for the USB device specified by UsbIo,
|
---|
498 | Recipient, and Target and place the result in the buffer specified by DeviceStatus.
|
---|
499 | The status of the transfer is returned in Status.
|
---|
500 | If UsbIo is NULL, then ASSERT().
|
---|
501 | If DeviceStatus is NULL, then ASSERT().
|
---|
502 | If Status is NULL, then ASSERT().
|
---|
503 |
|
---|
504 | @param UsbIo A pointer to the USB I/O Protocol instance for the specific USB target.
|
---|
505 | @param Recipient The USB data recipient type (i.e. Device, Interface, Endpoint).
|
---|
506 | Type USB_TYPES_DEFINITION is defined in the MDE Package Industry Standard
|
---|
507 | include file Usb.h.
|
---|
508 | @param Target The index of the device to be get the status of.
|
---|
509 | @param DeviceStatus A pointer to the device status to be retrieved.
|
---|
510 | @param Status A pointer to the status of the transfer.
|
---|
511 |
|
---|
512 | @retval EFI_SUCCESS The request executed successfully.
|
---|
513 | @retval EFI_TIMEOUT A timeout occurred executing the request.
|
---|
514 | @retval EFI_DEVICE_ERROR The request failed due to a device error.
|
---|
515 | The transfer status is returned in Status.
|
---|
516 |
|
---|
517 | **/
|
---|
518 | EFI_STATUS
|
---|
519 | EFIAPI
|
---|
520 | UsbGetStatus (
|
---|
521 | IN EFI_USB_IO_PROTOCOL *UsbIo,
|
---|
522 | IN USB_TYPES_DEFINITION Recipient,
|
---|
523 | IN UINT16 Target,
|
---|
524 | OUT UINT16 *DeviceStatus,
|
---|
525 | OUT UINT32 *Status
|
---|
526 | )
|
---|
527 | {
|
---|
528 | EFI_USB_DEVICE_REQUEST DevReq;
|
---|
529 |
|
---|
530 | ASSERT (UsbIo != NULL);
|
---|
531 | ASSERT (DeviceStatus != NULL);
|
---|
532 | ASSERT (Status != NULL);
|
---|
533 |
|
---|
534 | ZeroMem (&DevReq, sizeof (EFI_USB_DEVICE_REQUEST));
|
---|
535 |
|
---|
536 | switch (Recipient) {
|
---|
537 | case USB_TARGET_DEVICE:
|
---|
538 | DevReq.RequestType = USB_DEV_GET_STATUS_REQ_TYPE_D;
|
---|
539 | break;
|
---|
540 |
|
---|
541 | case USB_TARGET_INTERFACE:
|
---|
542 | DevReq.RequestType = USB_DEV_GET_STATUS_REQ_TYPE_I;
|
---|
543 | break;
|
---|
544 |
|
---|
545 | case USB_TARGET_ENDPOINT:
|
---|
546 | DevReq.RequestType = USB_DEV_GET_STATUS_REQ_TYPE_E;
|
---|
547 | break;
|
---|
548 |
|
---|
549 | default:
|
---|
550 | break;
|
---|
551 | }
|
---|
552 |
|
---|
553 | //
|
---|
554 | // Fill device request, see USB1.1 spec
|
---|
555 | //
|
---|
556 | DevReq.Request = USB_REQ_GET_STATUS;
|
---|
557 | DevReq.Value = 0;
|
---|
558 | DevReq.Index = Target;
|
---|
559 | DevReq.Length = 2;
|
---|
560 |
|
---|
561 | return UsbIo->UsbControlTransfer (
|
---|
562 | UsbIo,
|
---|
563 | &DevReq,
|
---|
564 | EfiUsbDataIn,
|
---|
565 | PcdGet32 (PcdUsbTransferTimeoutValue),
|
---|
566 | DeviceStatus,
|
---|
567 | 2,
|
---|
568 | Status
|
---|
569 | );
|
---|
570 | }
|
---|
571 |
|
---|
572 | /**
|
---|
573 | Clear halt feature of the specified usb endpoint.
|
---|
574 |
|
---|
575 | Retrieve the USB endpoint descriptor specified by UsbIo and EndPoint.
|
---|
576 | If the USB endpoint descriptor can not be retrieved, then return EFI_NOT_FOUND.
|
---|
577 | If the endpoint descriptor is found, then clear the halt feature of this USB endpoint.
|
---|
578 | The status of the transfer is returned in Status.
|
---|
579 | If UsbIo is NULL, then ASSERT().
|
---|
580 | If Status is NULL, then ASSERT().
|
---|
581 |
|
---|
582 | @param UsbIo A pointer to the USB I/O Protocol instance for the specific USB target.
|
---|
583 | @param Endpoint The endpoint address.
|
---|
584 | @param Status A pointer to the status of the transfer.
|
---|
585 |
|
---|
586 | @retval EFI_SUCCESS The request executed successfully.
|
---|
587 | @retval EFI_TIMEOUT A timeout occurred executing the request.
|
---|
588 | @retval EFI_DEVICE_ERROR The request failed due to a device error.
|
---|
589 | The transfer status is returned in Status.
|
---|
590 | @retval EFI_NOT_FOUND The specified USB endpoint descriptor can not be found
|
---|
591 |
|
---|
592 | **/
|
---|
593 | EFI_STATUS
|
---|
594 | EFIAPI
|
---|
595 | UsbClearEndpointHalt (
|
---|
596 | IN EFI_USB_IO_PROTOCOL *UsbIo,
|
---|
597 | IN UINT8 Endpoint,
|
---|
598 | OUT UINT32 *Status
|
---|
599 | )
|
---|
600 | {
|
---|
601 | EFI_STATUS Result;
|
---|
602 | EFI_USB_ENDPOINT_DESCRIPTOR EndpointDescriptor;
|
---|
603 | EFI_USB_INTERFACE_DESCRIPTOR InterfaceDescriptor;
|
---|
604 | UINT8 Index;
|
---|
605 |
|
---|
606 | ASSERT (UsbIo != NULL);
|
---|
607 | ASSERT (Status != NULL);
|
---|
608 |
|
---|
609 | ZeroMem (&EndpointDescriptor, sizeof (EFI_USB_ENDPOINT_DESCRIPTOR));
|
---|
610 | //
|
---|
611 | // First search the endpoint descriptor for that endpoint addr
|
---|
612 | //
|
---|
613 | Result = UsbIo->UsbGetInterfaceDescriptor (
|
---|
614 | UsbIo,
|
---|
615 | &InterfaceDescriptor
|
---|
616 | );
|
---|
617 | if (EFI_ERROR (Result)) {
|
---|
618 | return Result;
|
---|
619 | }
|
---|
620 |
|
---|
621 | for (Index = 0; Index < InterfaceDescriptor.NumEndpoints; Index++) {
|
---|
622 | Result = UsbIo->UsbGetEndpointDescriptor (
|
---|
623 | UsbIo,
|
---|
624 | Index,
|
---|
625 | &EndpointDescriptor
|
---|
626 | );
|
---|
627 | if (EFI_ERROR (Result)) {
|
---|
628 | continue;
|
---|
629 | }
|
---|
630 |
|
---|
631 | if (EndpointDescriptor.EndpointAddress == Endpoint) {
|
---|
632 | break;
|
---|
633 | }
|
---|
634 | }
|
---|
635 |
|
---|
636 | if (Index == InterfaceDescriptor.NumEndpoints) {
|
---|
637 | //
|
---|
638 | // No such endpoint
|
---|
639 | //
|
---|
640 | return EFI_NOT_FOUND;
|
---|
641 | }
|
---|
642 |
|
---|
643 | Result = UsbClearFeature (
|
---|
644 | UsbIo,
|
---|
645 | USB_TARGET_ENDPOINT,
|
---|
646 | USB_FEATURE_ENDPOINT_HALT,
|
---|
647 | EndpointDescriptor.EndpointAddress,
|
---|
648 | Status
|
---|
649 | );
|
---|
650 |
|
---|
651 | return Result;
|
---|
652 | }
|
---|