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1 /* |
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2 * Linux host USB redirector |
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3 * |
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4 * Copyright (c) 2005 Fabrice Bellard |
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5 * |
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6 * Copyright (c) 2008 Max Krasnyansky |
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7 * Support for host device auto connect & disconnect |
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8 * Major rewrite to support fully async operation |
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9 * |
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10 * Copyright 2008 TJ <linux@tjworld.net> |
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11 * Added flexible support for /dev/bus/usb /sys/bus/usb/devices in addition |
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12 * to the legacy /proc/bus/usb USB device discovery and handling |
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13 * |
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14 * Permission is hereby granted, free of charge, to any person obtaining a copy |
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15 * of this software and associated documentation files (the "Software"), to deal |
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16 * in the Software without restriction, including without limitation the rights |
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17 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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18 * copies of the Software, and to permit persons to whom the Software is |
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19 * furnished to do so, subject to the following conditions: |
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20 * |
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21 * The above copyright notice and this permission notice shall be included in |
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22 * all copies or substantial portions of the Software. |
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23 * |
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24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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25 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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26 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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27 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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28 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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29 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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30 * THE SOFTWARE. |
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31 */ |
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32 |
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33 #include "qemu-common.h" |
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34 #include "qemu-timer.h" |
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35 #include "console.h" |
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36 |
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37 #include <dirent.h> |
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38 #include <sys/ioctl.h> |
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39 #include <signal.h> |
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40 |
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41 #include <linux/usbdevice_fs.h> |
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42 #include <linux/version.h> |
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43 #include "hw/usb.h" |
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44 |
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45 /* We redefine it to avoid version problems */ |
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46 struct usb_ctrltransfer { |
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47 uint8_t bRequestType; |
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48 uint8_t bRequest; |
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49 uint16_t wValue; |
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50 uint16_t wIndex; |
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51 uint16_t wLength; |
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52 uint32_t timeout; |
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53 void *data; |
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54 }; |
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55 |
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56 struct usb_ctrlrequest { |
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57 uint8_t bRequestType; |
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58 uint8_t bRequest; |
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59 uint16_t wValue; |
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60 uint16_t wIndex; |
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61 uint16_t wLength; |
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62 }; |
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63 |
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64 typedef int USBScanFunc(void *opaque, int bus_num, int addr, int class_id, |
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65 int vendor_id, int product_id, |
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66 const char *product_name, int speed); |
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67 static int usb_host_find_device(int *pbus_num, int *paddr, |
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68 char *product_name, int product_name_size, |
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69 const char *devname); |
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70 //#define DEBUG |
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71 |
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72 #ifdef DEBUG |
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73 #define dprintf printf |
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74 #else |
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75 #define dprintf(...) |
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76 #endif |
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77 |
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78 #define USBDBG_DEVOPENED "husb: opened %s/devices\n" |
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79 |
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80 #define USBPROCBUS_PATH "/proc/bus/usb" |
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81 #define PRODUCT_NAME_SZ 32 |
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82 #define MAX_ENDPOINTS 16 |
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83 #define USBDEVBUS_PATH "/dev/bus/usb" |
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84 #define USBSYSBUS_PATH "/sys/bus/usb" |
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85 |
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86 static char *usb_host_device_path; |
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87 |
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88 #define USB_FS_NONE 0 |
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89 #define USB_FS_PROC 1 |
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90 #define USB_FS_DEV 2 |
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91 #define USB_FS_SYS 3 |
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92 |
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93 static int usb_fs_type; |
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94 |
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95 /* endpoint association data */ |
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96 struct endp_data { |
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97 uint8_t type; |
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98 uint8_t halted; |
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99 }; |
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100 |
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101 enum { |
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102 CTRL_STATE_IDLE = 0, |
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103 CTRL_STATE_SETUP, |
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104 CTRL_STATE_DATA, |
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105 CTRL_STATE_ACK |
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106 }; |
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107 |
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108 /* |
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109 * Control transfer state. |
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110 * Note that 'buffer' _must_ follow 'req' field because |
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111 * we need contigious buffer when we submit control URB. |
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112 */ |
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113 struct ctrl_struct { |
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114 uint16_t len; |
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115 uint16_t offset; |
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116 uint8_t state; |
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117 struct usb_ctrlrequest req; |
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118 uint8_t buffer[1024]; |
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119 }; |
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120 |
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121 typedef struct USBHostDevice { |
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122 USBDevice dev; |
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123 int fd; |
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124 |
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125 uint8_t descr[1024]; |
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126 int descr_len; |
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127 int configuration; |
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128 int ninterfaces; |
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129 int closing; |
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130 |
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131 struct ctrl_struct ctrl; |
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132 struct endp_data endp_table[MAX_ENDPOINTS]; |
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133 |
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134 /* Host side address */ |
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135 int bus_num; |
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136 int addr; |
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137 |
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138 struct USBHostDevice *next; |
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139 } USBHostDevice; |
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140 |
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141 static int is_isoc(USBHostDevice *s, int ep) |
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142 { |
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143 return s->endp_table[ep - 1].type == USBDEVFS_URB_TYPE_ISO; |
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144 } |
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145 |
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146 static int is_halted(USBHostDevice *s, int ep) |
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147 { |
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148 return s->endp_table[ep - 1].halted; |
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149 } |
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150 |
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151 static void clear_halt(USBHostDevice *s, int ep) |
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152 { |
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153 s->endp_table[ep - 1].halted = 0; |
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154 } |
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155 |
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156 static void set_halt(USBHostDevice *s, int ep) |
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157 { |
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158 s->endp_table[ep - 1].halted = 1; |
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159 } |
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160 |
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161 static USBHostDevice *hostdev_list; |
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162 |
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163 static void hostdev_link(USBHostDevice *dev) |
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164 { |
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165 dev->next = hostdev_list; |
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166 hostdev_list = dev; |
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167 } |
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168 |
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169 static void hostdev_unlink(USBHostDevice *dev) |
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170 { |
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171 USBHostDevice *pdev = hostdev_list; |
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172 USBHostDevice **prev = &hostdev_list; |
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173 |
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174 while (pdev) { |
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175 if (pdev == dev) { |
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176 *prev = dev->next; |
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177 return; |
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178 } |
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179 |
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180 prev = &pdev->next; |
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181 pdev = pdev->next; |
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182 } |
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183 } |
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184 |
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185 static USBHostDevice *hostdev_find(int bus_num, int addr) |
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186 { |
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187 USBHostDevice *s = hostdev_list; |
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188 while (s) { |
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189 if (s->bus_num == bus_num && s->addr == addr) |
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190 return s; |
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191 s = s->next; |
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192 } |
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193 return NULL; |
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194 } |
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195 |
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196 /* |
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197 * Async URB state. |
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198 * We always allocate one isoc descriptor even for bulk transfers |
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199 * to simplify allocation and casts. |
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200 */ |
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201 typedef struct AsyncURB |
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202 { |
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203 struct usbdevfs_urb urb; |
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204 struct usbdevfs_iso_packet_desc isocpd; |
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205 |
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206 USBPacket *packet; |
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207 USBHostDevice *hdev; |
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208 } AsyncURB; |
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209 |
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210 static AsyncURB *async_alloc(void) |
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211 { |
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212 return (AsyncURB *) qemu_mallocz(sizeof(AsyncURB)); |
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213 } |
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214 |
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215 static void async_free(AsyncURB *aurb) |
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216 { |
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217 qemu_free(aurb); |
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218 } |
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219 |
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220 static void async_complete_ctrl(USBHostDevice *s, USBPacket *p) |
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221 { |
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222 switch(s->ctrl.state) { |
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223 case CTRL_STATE_SETUP: |
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224 if (p->len < s->ctrl.len) |
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225 s->ctrl.len = p->len; |
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226 s->ctrl.state = CTRL_STATE_DATA; |
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227 p->len = 8; |
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228 break; |
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229 |
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230 case CTRL_STATE_ACK: |
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231 s->ctrl.state = CTRL_STATE_IDLE; |
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232 p->len = 0; |
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233 break; |
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234 |
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235 default: |
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236 break; |
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237 } |
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238 } |
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239 |
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240 static void async_complete(void *opaque) |
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241 { |
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242 USBHostDevice *s = opaque; |
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243 AsyncURB *aurb; |
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244 |
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245 while (1) { |
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246 USBPacket *p; |
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247 |
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248 int r = ioctl(s->fd, USBDEVFS_REAPURBNDELAY, &aurb); |
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249 if (r < 0) { |
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250 if (errno == EAGAIN) |
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251 return; |
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252 |
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253 if (errno == ENODEV && !s->closing) { |
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254 printf("husb: device %d.%d disconnected\n", s->bus_num, s->addr); |
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255 usb_device_del_addr(0, s->dev.addr); |
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256 return; |
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257 } |
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258 |
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259 dprintf("husb: async. reap urb failed errno %d\n", errno); |
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260 return; |
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261 } |
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262 |
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263 p = aurb->packet; |
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264 |
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265 dprintf("husb: async completed. aurb %p status %d alen %d\n", |
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266 aurb, aurb->urb.status, aurb->urb.actual_length); |
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267 |
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268 if (p) { |
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269 switch (aurb->urb.status) { |
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270 case 0: |
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271 p->len = aurb->urb.actual_length; |
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272 if (aurb->urb.type == USBDEVFS_URB_TYPE_CONTROL) |
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273 async_complete_ctrl(s, p); |
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274 break; |
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275 |
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276 case -EPIPE: |
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277 set_halt(s, p->devep); |
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278 /* fall through */ |
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279 default: |
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280 p->len = USB_RET_NAK; |
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281 break; |
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282 } |
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283 |
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284 usb_packet_complete(p); |
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285 } |
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286 |
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287 async_free(aurb); |
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288 } |
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289 } |
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290 |
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291 static void async_cancel(USBPacket *unused, void *opaque) |
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292 { |
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293 AsyncURB *aurb = opaque; |
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294 USBHostDevice *s = aurb->hdev; |
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295 |
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296 dprintf("husb: async cancel. aurb %p\n", aurb); |
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297 |
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298 /* Mark it as dead (see async_complete above) */ |
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299 aurb->packet = NULL; |
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300 |
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301 int r = ioctl(s->fd, USBDEVFS_DISCARDURB, aurb); |
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302 if (r < 0) { |
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303 dprintf("husb: async. discard urb failed errno %d\n", errno); |
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304 } |
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305 } |
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306 |
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307 static int usb_host_claim_interfaces(USBHostDevice *dev, int configuration) |
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308 { |
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309 int dev_descr_len, config_descr_len; |
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310 int interface, nb_interfaces, nb_configurations; |
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311 int ret, i; |
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312 |
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313 if (configuration == 0) /* address state - ignore */ |
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314 return 1; |
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315 |
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316 dprintf("husb: claiming interfaces. config %d\n", configuration); |
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317 |
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318 i = 0; |
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319 dev_descr_len = dev->descr[0]; |
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320 if (dev_descr_len > dev->descr_len) |
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321 goto fail; |
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322 nb_configurations = dev->descr[17]; |
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323 |
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324 i += dev_descr_len; |
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325 while (i < dev->descr_len) { |
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326 dprintf("husb: i is %d, descr_len is %d, dl %d, dt %d\n", i, dev->descr_len, |
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327 dev->descr[i], dev->descr[i+1]); |
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328 |
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329 if (dev->descr[i+1] != USB_DT_CONFIG) { |
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330 i += dev->descr[i]; |
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331 continue; |
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332 } |
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333 config_descr_len = dev->descr[i]; |
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334 |
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335 printf("husb: config #%d need %d\n", dev->descr[i + 5], configuration); |
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336 |
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337 if (configuration < 0 || configuration == dev->descr[i + 5]) { |
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338 configuration = dev->descr[i + 5]; |
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339 break; |
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340 } |
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341 |
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342 i += config_descr_len; |
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343 } |
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344 |
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345 if (i >= dev->descr_len) { |
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346 fprintf(stderr, "husb: update iface failed. no matching configuration\n"); |
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347 goto fail; |
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348 } |
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349 nb_interfaces = dev->descr[i + 4]; |
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350 |
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351 #ifdef USBDEVFS_DISCONNECT |
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352 /* earlier Linux 2.4 do not support that */ |
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353 { |
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354 struct usbdevfs_ioctl ctrl; |
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355 for (interface = 0; interface < nb_interfaces; interface++) { |
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356 ctrl.ioctl_code = USBDEVFS_DISCONNECT; |
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357 ctrl.ifno = interface; |
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358 ret = ioctl(dev->fd, USBDEVFS_IOCTL, &ctrl); |
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359 if (ret < 0 && errno != ENODATA) { |
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360 perror("USBDEVFS_DISCONNECT"); |
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361 goto fail; |
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362 } |
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363 } |
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364 } |
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365 #endif |
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366 |
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367 /* XXX: only grab if all interfaces are free */ |
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368 for (interface = 0; interface < nb_interfaces; interface++) { |
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369 ret = ioctl(dev->fd, USBDEVFS_CLAIMINTERFACE, &interface); |
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370 if (ret < 0) { |
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371 if (errno == EBUSY) { |
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372 printf("husb: update iface. device already grabbed\n"); |
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373 } else { |
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374 perror("husb: failed to claim interface"); |
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375 } |
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376 fail: |
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377 return 0; |
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378 } |
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379 } |
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380 |
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381 printf("husb: %d interfaces claimed for configuration %d\n", |
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382 nb_interfaces, configuration); |
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383 |
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384 dev->ninterfaces = nb_interfaces; |
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385 dev->configuration = configuration; |
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386 return 1; |
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387 } |
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388 |
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389 static int usb_host_release_interfaces(USBHostDevice *s) |
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390 { |
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391 int ret, i; |
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392 |
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393 dprintf("husb: releasing interfaces\n"); |
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394 |
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395 for (i = 0; i < s->ninterfaces; i++) { |
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396 ret = ioctl(s->fd, USBDEVFS_RELEASEINTERFACE, &i); |
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397 if (ret < 0) { |
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398 perror("husb: failed to release interface"); |
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399 return 0; |
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400 } |
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401 } |
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402 |
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403 return 1; |
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404 } |
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405 |
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406 static void usb_host_handle_reset(USBDevice *dev) |
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407 { |
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408 USBHostDevice *s = (USBHostDevice *) dev; |
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409 |
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410 dprintf("husb: reset device %u.%u\n", s->bus_num, s->addr); |
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411 |
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412 ioctl(s->fd, USBDEVFS_RESET); |
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413 |
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414 usb_host_claim_interfaces(s, s->configuration); |
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415 } |
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416 |
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417 static void usb_host_handle_destroy(USBDevice *dev) |
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418 { |
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419 USBHostDevice *s = (USBHostDevice *)dev; |
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420 |
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421 s->closing = 1; |
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422 |
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423 qemu_set_fd_handler(s->fd, NULL, NULL, NULL); |
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424 |
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425 hostdev_unlink(s); |
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426 |
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427 async_complete(s); |
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428 |
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429 if (s->fd >= 0) |
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430 close(s->fd); |
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431 |
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432 qemu_free(s); |
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433 } |
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434 |
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435 static int usb_linux_update_endp_table(USBHostDevice *s); |
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436 |
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437 static int usb_host_handle_data(USBHostDevice *s, USBPacket *p) |
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438 { |
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439 struct usbdevfs_urb *urb; |
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440 AsyncURB *aurb; |
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441 int ret; |
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442 |
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443 aurb = async_alloc(); |
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444 if (!aurb) { |
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445 dprintf("husb: async malloc failed\n"); |
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446 return USB_RET_NAK; |
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447 } |
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448 aurb->hdev = s; |
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449 aurb->packet = p; |
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450 |
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451 urb = &aurb->urb; |
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452 |
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453 if (p->pid == USB_TOKEN_IN) |
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454 urb->endpoint = p->devep | 0x80; |
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455 else |
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456 urb->endpoint = p->devep; |
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457 |
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458 if (is_halted(s, p->devep)) { |
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459 ret = ioctl(s->fd, USBDEVFS_CLEAR_HALT, &urb->endpoint); |
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460 if (ret < 0) { |
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461 dprintf("husb: failed to clear halt. ep 0x%x errno %d\n", |
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462 urb->endpoint, errno); |
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463 return USB_RET_NAK; |
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464 } |
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465 clear_halt(s, p->devep); |
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466 } |
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467 |
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468 urb->buffer = p->data; |
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469 urb->buffer_length = p->len; |
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470 |
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471 if (is_isoc(s, p->devep)) { |
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472 /* Setup ISOC transfer */ |
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473 urb->type = USBDEVFS_URB_TYPE_ISO; |
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474 urb->flags = USBDEVFS_URB_ISO_ASAP; |
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475 urb->number_of_packets = 1; |
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476 urb->iso_frame_desc[0].length = p->len; |
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477 } else { |
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478 /* Setup bulk transfer */ |
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479 urb->type = USBDEVFS_URB_TYPE_BULK; |
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480 } |
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481 |
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482 urb->usercontext = s; |
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483 |
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484 ret = ioctl(s->fd, USBDEVFS_SUBMITURB, urb); |
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485 |
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486 dprintf("husb: data submit. ep 0x%x len %u aurb %p\n", urb->endpoint, p->len, aurb); |
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487 |
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488 if (ret < 0) { |
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489 dprintf("husb: submit failed. errno %d\n", errno); |
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490 async_free(aurb); |
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491 |
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492 switch(errno) { |
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493 case ETIMEDOUT: |
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494 return USB_RET_NAK; |
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495 case EPIPE: |
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496 default: |
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497 return USB_RET_STALL; |
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498 } |
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499 } |
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500 |
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501 usb_defer_packet(p, async_cancel, aurb); |
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502 return USB_RET_ASYNC; |
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503 } |
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504 |
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505 static int ctrl_error(void) |
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506 { |
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507 if (errno == ETIMEDOUT) |
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508 return USB_RET_NAK; |
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509 else |
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510 return USB_RET_STALL; |
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511 } |
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512 |
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513 static int usb_host_set_address(USBHostDevice *s, int addr) |
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514 { |
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515 dprintf("husb: ctrl set addr %u\n", addr); |
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516 s->dev.addr = addr; |
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517 return 0; |
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518 } |
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519 |
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520 static int usb_host_set_config(USBHostDevice *s, int config) |
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521 { |
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522 usb_host_release_interfaces(s); |
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523 |
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524 int ret = ioctl(s->fd, USBDEVFS_SETCONFIGURATION, &config); |
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525 |
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526 dprintf("husb: ctrl set config %d ret %d errno %d\n", config, ret, errno); |
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527 |
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528 if (ret < 0) |
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529 return ctrl_error(); |
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530 |
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531 usb_host_claim_interfaces(s, config); |
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532 return 0; |
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533 } |
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534 |
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535 static int usb_host_set_interface(USBHostDevice *s, int iface, int alt) |
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536 { |
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537 struct usbdevfs_setinterface si; |
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538 int ret; |
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539 |
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540 si.interface = iface; |
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541 si.altsetting = alt; |
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542 ret = ioctl(s->fd, USBDEVFS_SETINTERFACE, &si); |
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543 |
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544 dprintf("husb: ctrl set iface %d altset %d ret %d errno %d\n", |
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545 iface, alt, ret, errno); |
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546 |
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547 if (ret < 0) |
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548 return ctrl_error(); |
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549 |
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550 usb_linux_update_endp_table(s); |
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551 return 0; |
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552 } |
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553 |
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554 static int usb_host_handle_control(USBHostDevice *s, USBPacket *p) |
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555 { |
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556 struct usbdevfs_urb *urb; |
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557 AsyncURB *aurb; |
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558 int ret, value, index; |
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559 |
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560 /* |
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561 * Process certain standard device requests. |
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562 * These are infrequent and are processed synchronously. |
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563 */ |
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564 value = le16_to_cpu(s->ctrl.req.wValue); |
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565 index = le16_to_cpu(s->ctrl.req.wIndex); |
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566 |
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567 dprintf("husb: ctrl type 0x%x req 0x%x val 0x%x index %u len %u\n", |
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568 s->ctrl.req.bRequestType, s->ctrl.req.bRequest, value, index, |
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569 s->ctrl.len); |
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570 |
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571 if (s->ctrl.req.bRequestType == 0) { |
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572 switch (s->ctrl.req.bRequest) { |
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573 case USB_REQ_SET_ADDRESS: |
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574 return usb_host_set_address(s, value); |
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575 |
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576 case USB_REQ_SET_CONFIGURATION: |
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577 return usb_host_set_config(s, value & 0xff); |
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578 } |
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579 } |
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580 |
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581 if (s->ctrl.req.bRequestType == 1 && |
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582 s->ctrl.req.bRequest == USB_REQ_SET_INTERFACE) |
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583 return usb_host_set_interface(s, index, value); |
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584 |
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585 /* The rest are asynchronous */ |
|
586 |
|
587 aurb = async_alloc(); |
|
588 if (!aurb) { |
|
589 dprintf("husb: async malloc failed\n"); |
|
590 return USB_RET_NAK; |
|
591 } |
|
592 aurb->hdev = s; |
|
593 aurb->packet = p; |
|
594 |
|
595 /* |
|
596 * Setup ctrl transfer. |
|
597 * |
|
598 * s->ctrl is layed out such that data buffer immediately follows |
|
599 * 'req' struct which is exactly what usbdevfs expects. |
|
600 */ |
|
601 urb = &aurb->urb; |
|
602 |
|
603 urb->type = USBDEVFS_URB_TYPE_CONTROL; |
|
604 urb->endpoint = p->devep; |
|
605 |
|
606 urb->buffer = &s->ctrl.req; |
|
607 urb->buffer_length = 8 + s->ctrl.len; |
|
608 |
|
609 urb->usercontext = s; |
|
610 |
|
611 ret = ioctl(s->fd, USBDEVFS_SUBMITURB, urb); |
|
612 |
|
613 dprintf("husb: submit ctrl. len %u aurb %p\n", urb->buffer_length, aurb); |
|
614 |
|
615 if (ret < 0) { |
|
616 dprintf("husb: submit failed. errno %d\n", errno); |
|
617 async_free(aurb); |
|
618 |
|
619 switch(errno) { |
|
620 case ETIMEDOUT: |
|
621 return USB_RET_NAK; |
|
622 case EPIPE: |
|
623 default: |
|
624 return USB_RET_STALL; |
|
625 } |
|
626 } |
|
627 |
|
628 usb_defer_packet(p, async_cancel, aurb); |
|
629 return USB_RET_ASYNC; |
|
630 } |
|
631 |
|
632 static int do_token_setup(USBDevice *dev, USBPacket *p) |
|
633 { |
|
634 USBHostDevice *s = (USBHostDevice *) dev; |
|
635 int ret = 0; |
|
636 |
|
637 if (p->len != 8) |
|
638 return USB_RET_STALL; |
|
639 |
|
640 memcpy(&s->ctrl.req, p->data, 8); |
|
641 s->ctrl.len = le16_to_cpu(s->ctrl.req.wLength); |
|
642 s->ctrl.offset = 0; |
|
643 s->ctrl.state = CTRL_STATE_SETUP; |
|
644 |
|
645 if (s->ctrl.req.bRequestType & USB_DIR_IN) { |
|
646 ret = usb_host_handle_control(s, p); |
|
647 if (ret < 0) |
|
648 return ret; |
|
649 |
|
650 if (ret < s->ctrl.len) |
|
651 s->ctrl.len = ret; |
|
652 s->ctrl.state = CTRL_STATE_DATA; |
|
653 } else { |
|
654 if (s->ctrl.len == 0) |
|
655 s->ctrl.state = CTRL_STATE_ACK; |
|
656 else |
|
657 s->ctrl.state = CTRL_STATE_DATA; |
|
658 } |
|
659 |
|
660 return ret; |
|
661 } |
|
662 |
|
663 static int do_token_in(USBDevice *dev, USBPacket *p) |
|
664 { |
|
665 USBHostDevice *s = (USBHostDevice *) dev; |
|
666 int ret = 0; |
|
667 |
|
668 if (p->devep != 0) |
|
669 return usb_host_handle_data(s, p); |
|
670 |
|
671 switch(s->ctrl.state) { |
|
672 case CTRL_STATE_ACK: |
|
673 if (!(s->ctrl.req.bRequestType & USB_DIR_IN)) { |
|
674 ret = usb_host_handle_control(s, p); |
|
675 if (ret == USB_RET_ASYNC) |
|
676 return USB_RET_ASYNC; |
|
677 |
|
678 s->ctrl.state = CTRL_STATE_IDLE; |
|
679 return ret > 0 ? 0 : ret; |
|
680 } |
|
681 |
|
682 return 0; |
|
683 |
|
684 case CTRL_STATE_DATA: |
|
685 if (s->ctrl.req.bRequestType & USB_DIR_IN) { |
|
686 int len = s->ctrl.len - s->ctrl.offset; |
|
687 if (len > p->len) |
|
688 len = p->len; |
|
689 memcpy(p->data, s->ctrl.buffer + s->ctrl.offset, len); |
|
690 s->ctrl.offset += len; |
|
691 if (s->ctrl.offset >= s->ctrl.len) |
|
692 s->ctrl.state = CTRL_STATE_ACK; |
|
693 return len; |
|
694 } |
|
695 |
|
696 s->ctrl.state = CTRL_STATE_IDLE; |
|
697 return USB_RET_STALL; |
|
698 |
|
699 default: |
|
700 return USB_RET_STALL; |
|
701 } |
|
702 } |
|
703 |
|
704 static int do_token_out(USBDevice *dev, USBPacket *p) |
|
705 { |
|
706 USBHostDevice *s = (USBHostDevice *) dev; |
|
707 |
|
708 if (p->devep != 0) |
|
709 return usb_host_handle_data(s, p); |
|
710 |
|
711 switch(s->ctrl.state) { |
|
712 case CTRL_STATE_ACK: |
|
713 if (s->ctrl.req.bRequestType & USB_DIR_IN) { |
|
714 s->ctrl.state = CTRL_STATE_IDLE; |
|
715 /* transfer OK */ |
|
716 } else { |
|
717 /* ignore additional output */ |
|
718 } |
|
719 return 0; |
|
720 |
|
721 case CTRL_STATE_DATA: |
|
722 if (!(s->ctrl.req.bRequestType & USB_DIR_IN)) { |
|
723 int len = s->ctrl.len - s->ctrl.offset; |
|
724 if (len > p->len) |
|
725 len = p->len; |
|
726 memcpy(s->ctrl.buffer + s->ctrl.offset, p->data, len); |
|
727 s->ctrl.offset += len; |
|
728 if (s->ctrl.offset >= s->ctrl.len) |
|
729 s->ctrl.state = CTRL_STATE_ACK; |
|
730 return len; |
|
731 } |
|
732 |
|
733 s->ctrl.state = CTRL_STATE_IDLE; |
|
734 return USB_RET_STALL; |
|
735 |
|
736 default: |
|
737 return USB_RET_STALL; |
|
738 } |
|
739 } |
|
740 |
|
741 /* |
|
742 * Packet handler. |
|
743 * Called by the HC (host controller). |
|
744 * |
|
745 * Returns length of the transaction or one of the USB_RET_XXX codes. |
|
746 */ |
|
747 static int usb_host_handle_packet(USBDevice *s, USBPacket *p) |
|
748 { |
|
749 switch(p->pid) { |
|
750 case USB_MSG_ATTACH: |
|
751 s->state = USB_STATE_ATTACHED; |
|
752 return 0; |
|
753 |
|
754 case USB_MSG_DETACH: |
|
755 s->state = USB_STATE_NOTATTACHED; |
|
756 return 0; |
|
757 |
|
758 case USB_MSG_RESET: |
|
759 s->remote_wakeup = 0; |
|
760 s->addr = 0; |
|
761 s->state = USB_STATE_DEFAULT; |
|
762 s->handle_reset(s); |
|
763 return 0; |
|
764 } |
|
765 |
|
766 /* Rest of the PIDs must match our address */ |
|
767 if (s->state < USB_STATE_DEFAULT || p->devaddr != s->addr) |
|
768 return USB_RET_NODEV; |
|
769 |
|
770 switch (p->pid) { |
|
771 case USB_TOKEN_SETUP: |
|
772 return do_token_setup(s, p); |
|
773 |
|
774 case USB_TOKEN_IN: |
|
775 return do_token_in(s, p); |
|
776 |
|
777 case USB_TOKEN_OUT: |
|
778 return do_token_out(s, p); |
|
779 |
|
780 default: |
|
781 return USB_RET_STALL; |
|
782 } |
|
783 } |
|
784 |
|
785 /* returns 1 on problem encountered or 0 for success */ |
|
786 static int usb_linux_update_endp_table(USBHostDevice *s) |
|
787 { |
|
788 uint8_t *descriptors; |
|
789 uint8_t devep, type, configuration, alt_interface; |
|
790 struct usb_ctrltransfer ct; |
|
791 int interface, ret, length, i; |
|
792 |
|
793 ct.bRequestType = USB_DIR_IN; |
|
794 ct.bRequest = USB_REQ_GET_CONFIGURATION; |
|
795 ct.wValue = 0; |
|
796 ct.wIndex = 0; |
|
797 ct.wLength = 1; |
|
798 ct.data = &configuration; |
|
799 ct.timeout = 50; |
|
800 |
|
801 ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct); |
|
802 if (ret < 0) { |
|
803 perror("usb_linux_update_endp_table"); |
|
804 return 1; |
|
805 } |
|
806 |
|
807 /* in address state */ |
|
808 if (configuration == 0) |
|
809 return 1; |
|
810 |
|
811 /* get the desired configuration, interface, and endpoint descriptors |
|
812 * from device description */ |
|
813 descriptors = &s->descr[18]; |
|
814 length = s->descr_len - 18; |
|
815 i = 0; |
|
816 |
|
817 if (descriptors[i + 1] != USB_DT_CONFIG || |
|
818 descriptors[i + 5] != configuration) { |
|
819 dprintf("invalid descriptor data - configuration\n"); |
|
820 return 1; |
|
821 } |
|
822 i += descriptors[i]; |
|
823 |
|
824 while (i < length) { |
|
825 if (descriptors[i + 1] != USB_DT_INTERFACE || |
|
826 (descriptors[i + 1] == USB_DT_INTERFACE && |
|
827 descriptors[i + 4] == 0)) { |
|
828 i += descriptors[i]; |
|
829 continue; |
|
830 } |
|
831 |
|
832 interface = descriptors[i + 2]; |
|
833 |
|
834 ct.bRequestType = USB_DIR_IN | USB_RECIP_INTERFACE; |
|
835 ct.bRequest = USB_REQ_GET_INTERFACE; |
|
836 ct.wValue = 0; |
|
837 ct.wIndex = interface; |
|
838 ct.wLength = 1; |
|
839 ct.data = &alt_interface; |
|
840 ct.timeout = 50; |
|
841 |
|
842 ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct); |
|
843 if (ret < 0) { |
|
844 perror("usb_linux_update_endp_table"); |
|
845 return 1; |
|
846 } |
|
847 |
|
848 /* the current interface descriptor is the active interface |
|
849 * and has endpoints */ |
|
850 if (descriptors[i + 3] != alt_interface) { |
|
851 i += descriptors[i]; |
|
852 continue; |
|
853 } |
|
854 |
|
855 /* advance to the endpoints */ |
|
856 while (i < length && descriptors[i +1] != USB_DT_ENDPOINT) |
|
857 i += descriptors[i]; |
|
858 |
|
859 if (i >= length) |
|
860 break; |
|
861 |
|
862 while (i < length) { |
|
863 if (descriptors[i + 1] != USB_DT_ENDPOINT) |
|
864 break; |
|
865 |
|
866 devep = descriptors[i + 2]; |
|
867 switch (descriptors[i + 3] & 0x3) { |
|
868 case 0x00: |
|
869 type = USBDEVFS_URB_TYPE_CONTROL; |
|
870 break; |
|
871 case 0x01: |
|
872 type = USBDEVFS_URB_TYPE_ISO; |
|
873 break; |
|
874 case 0x02: |
|
875 type = USBDEVFS_URB_TYPE_BULK; |
|
876 break; |
|
877 case 0x03: |
|
878 type = USBDEVFS_URB_TYPE_INTERRUPT; |
|
879 break; |
|
880 default: |
|
881 dprintf("usb_host: malformed endpoint type\n"); |
|
882 type = USBDEVFS_URB_TYPE_BULK; |
|
883 } |
|
884 s->endp_table[(devep & 0xf) - 1].type = type; |
|
885 s->endp_table[(devep & 0xf) - 1].halted = 0; |
|
886 |
|
887 i += descriptors[i]; |
|
888 } |
|
889 } |
|
890 return 0; |
|
891 } |
|
892 |
|
893 static USBDevice *usb_host_device_open_addr(int bus_num, int addr, const char *prod_name) |
|
894 { |
|
895 int fd = -1, ret; |
|
896 USBHostDevice *dev = NULL; |
|
897 struct usbdevfs_connectinfo ci; |
|
898 char buf[1024]; |
|
899 |
|
900 dev = qemu_mallocz(sizeof(USBHostDevice)); |
|
901 if (!dev) |
|
902 goto fail; |
|
903 |
|
904 dev->bus_num = bus_num; |
|
905 dev->addr = addr; |
|
906 |
|
907 printf("husb: open device %d.%d\n", bus_num, addr); |
|
908 |
|
909 if (!usb_host_device_path) { |
|
910 perror("husb: USB Host Device Path not set"); |
|
911 goto fail; |
|
912 } |
|
913 snprintf(buf, sizeof(buf), "%s/%03d/%03d", usb_host_device_path, |
|
914 bus_num, addr); |
|
915 fd = open(buf, O_RDWR | O_NONBLOCK); |
|
916 if (fd < 0) { |
|
917 perror(buf); |
|
918 goto fail; |
|
919 } |
|
920 dprintf("husb: opened %s\n", buf); |
|
921 |
|
922 /* read the device description */ |
|
923 dev->descr_len = read(fd, dev->descr, sizeof(dev->descr)); |
|
924 if (dev->descr_len <= 0) { |
|
925 perror("husb: reading device data failed"); |
|
926 goto fail; |
|
927 } |
|
928 |
|
929 #ifdef DEBUG |
|
930 { |
|
931 int x; |
|
932 printf("=== begin dumping device descriptor data ===\n"); |
|
933 for (x = 0; x < dev->descr_len; x++) |
|
934 printf("%02x ", dev->descr[x]); |
|
935 printf("\n=== end dumping device descriptor data ===\n"); |
|
936 } |
|
937 #endif |
|
938 |
|
939 dev->fd = fd; |
|
940 |
|
941 /* |
|
942 * Initial configuration is -1 which makes us claim first |
|
943 * available config. We used to start with 1, which does not |
|
944 * always work. I've seen devices where first config starts |
|
945 * with 2. |
|
946 */ |
|
947 if (!usb_host_claim_interfaces(dev, -1)) |
|
948 goto fail; |
|
949 |
|
950 ret = ioctl(fd, USBDEVFS_CONNECTINFO, &ci); |
|
951 if (ret < 0) { |
|
952 perror("usb_host_device_open: USBDEVFS_CONNECTINFO"); |
|
953 goto fail; |
|
954 } |
|
955 |
|
956 printf("husb: grabbed usb device %d.%d\n", bus_num, addr); |
|
957 |
|
958 ret = usb_linux_update_endp_table(dev); |
|
959 if (ret) |
|
960 goto fail; |
|
961 |
|
962 if (ci.slow) |
|
963 dev->dev.speed = USB_SPEED_LOW; |
|
964 else |
|
965 dev->dev.speed = USB_SPEED_HIGH; |
|
966 |
|
967 dev->dev.handle_packet = usb_host_handle_packet; |
|
968 dev->dev.handle_reset = usb_host_handle_reset; |
|
969 dev->dev.handle_destroy = usb_host_handle_destroy; |
|
970 |
|
971 if (!prod_name || prod_name[0] == '\0') |
|
972 snprintf(dev->dev.devname, sizeof(dev->dev.devname), |
|
973 "host:%d.%d", bus_num, addr); |
|
974 else |
|
975 pstrcpy(dev->dev.devname, sizeof(dev->dev.devname), |
|
976 prod_name); |
|
977 |
|
978 /* USB devio uses 'write' flag to check for async completions */ |
|
979 qemu_set_fd_handler(dev->fd, NULL, async_complete, dev); |
|
980 |
|
981 hostdev_link(dev); |
|
982 |
|
983 return (USBDevice *) dev; |
|
984 |
|
985 fail: |
|
986 if (dev) |
|
987 qemu_free(dev); |
|
988 |
|
989 close(fd); |
|
990 return NULL; |
|
991 } |
|
992 |
|
993 static int usb_host_auto_add(const char *spec); |
|
994 static int usb_host_auto_del(const char *spec); |
|
995 |
|
996 USBDevice *usb_host_device_open(const char *devname) |
|
997 { |
|
998 int bus_num, addr; |
|
999 char product_name[PRODUCT_NAME_SZ]; |
|
1000 |
|
1001 if (strstr(devname, "auto:")) { |
|
1002 usb_host_auto_add(devname); |
|
1003 return NULL; |
|
1004 } |
|
1005 |
|
1006 if (usb_host_find_device(&bus_num, &addr, product_name, sizeof(product_name), |
|
1007 devname) < 0) |
|
1008 return NULL; |
|
1009 |
|
1010 if (hostdev_find(bus_num, addr)) { |
|
1011 term_printf("husb: host usb device %d.%d is already open\n", bus_num, addr); |
|
1012 return NULL; |
|
1013 } |
|
1014 |
|
1015 return usb_host_device_open_addr(bus_num, addr, product_name); |
|
1016 } |
|
1017 |
|
1018 int usb_host_device_close(const char *devname) |
|
1019 { |
|
1020 char product_name[PRODUCT_NAME_SZ]; |
|
1021 int bus_num, addr; |
|
1022 USBHostDevice *s; |
|
1023 |
|
1024 if (strstr(devname, "auto:")) |
|
1025 return usb_host_auto_del(devname); |
|
1026 |
|
1027 if (usb_host_find_device(&bus_num, &addr, product_name, sizeof(product_name), |
|
1028 devname) < 0) |
|
1029 return -1; |
|
1030 |
|
1031 s = hostdev_find(bus_num, addr); |
|
1032 if (s) { |
|
1033 usb_device_del_addr(0, s->dev.addr); |
|
1034 return 0; |
|
1035 } |
|
1036 |
|
1037 return -1; |
|
1038 } |
|
1039 |
|
1040 static int get_tag_value(char *buf, int buf_size, |
|
1041 const char *str, const char *tag, |
|
1042 const char *stopchars) |
|
1043 { |
|
1044 const char *p; |
|
1045 char *q; |
|
1046 p = strstr(str, tag); |
|
1047 if (!p) |
|
1048 return -1; |
|
1049 p += strlen(tag); |
|
1050 while (qemu_isspace(*p)) |
|
1051 p++; |
|
1052 q = buf; |
|
1053 while (*p != '\0' && !strchr(stopchars, *p)) { |
|
1054 if ((q - buf) < (buf_size - 1)) |
|
1055 *q++ = *p; |
|
1056 p++; |
|
1057 } |
|
1058 *q = '\0'; |
|
1059 return q - buf; |
|
1060 } |
|
1061 |
|
1062 /* |
|
1063 * Use /proc/bus/usb/devices or /dev/bus/usb/devices file to determine |
|
1064 * host's USB devices. This is legacy support since many distributions |
|
1065 * are moving to /sys/bus/usb |
|
1066 */ |
|
1067 static int usb_host_scan_dev(void *opaque, USBScanFunc *func) |
|
1068 { |
|
1069 FILE *f = 0; |
|
1070 char line[1024]; |
|
1071 char buf[1024]; |
|
1072 int bus_num, addr, speed, device_count, class_id, product_id, vendor_id; |
|
1073 char product_name[512]; |
|
1074 int ret = 0; |
|
1075 |
|
1076 if (!usb_host_device_path) { |
|
1077 perror("husb: USB Host Device Path not set"); |
|
1078 goto the_end; |
|
1079 } |
|
1080 snprintf(line, sizeof(line), "%s/devices", usb_host_device_path); |
|
1081 f = fopen(line, "r"); |
|
1082 if (!f) { |
|
1083 perror("husb: cannot open devices file"); |
|
1084 goto the_end; |
|
1085 } |
|
1086 |
|
1087 device_count = 0; |
|
1088 bus_num = addr = speed = class_id = product_id = vendor_id = 0; |
|
1089 for(;;) { |
|
1090 if (fgets(line, sizeof(line), f) == NULL) |
|
1091 break; |
|
1092 if (strlen(line) > 0) |
|
1093 line[strlen(line) - 1] = '\0'; |
|
1094 if (line[0] == 'T' && line[1] == ':') { |
|
1095 if (device_count && (vendor_id || product_id)) { |
|
1096 /* New device. Add the previously discovered device. */ |
|
1097 ret = func(opaque, bus_num, addr, class_id, vendor_id, |
|
1098 product_id, product_name, speed); |
|
1099 if (ret) |
|
1100 goto the_end; |
|
1101 } |
|
1102 if (get_tag_value(buf, sizeof(buf), line, "Bus=", " ") < 0) |
|
1103 goto fail; |
|
1104 bus_num = atoi(buf); |
|
1105 if (get_tag_value(buf, sizeof(buf), line, "Dev#=", " ") < 0) |
|
1106 goto fail; |
|
1107 addr = atoi(buf); |
|
1108 if (get_tag_value(buf, sizeof(buf), line, "Spd=", " ") < 0) |
|
1109 goto fail; |
|
1110 if (!strcmp(buf, "480")) |
|
1111 speed = USB_SPEED_HIGH; |
|
1112 else if (!strcmp(buf, "1.5")) |
|
1113 speed = USB_SPEED_LOW; |
|
1114 else |
|
1115 speed = USB_SPEED_FULL; |
|
1116 product_name[0] = '\0'; |
|
1117 class_id = 0xff; |
|
1118 device_count++; |
|
1119 product_id = 0; |
|
1120 vendor_id = 0; |
|
1121 } else if (line[0] == 'P' && line[1] == ':') { |
|
1122 if (get_tag_value(buf, sizeof(buf), line, "Vendor=", " ") < 0) |
|
1123 goto fail; |
|
1124 vendor_id = strtoul(buf, NULL, 16); |
|
1125 if (get_tag_value(buf, sizeof(buf), line, "ProdID=", " ") < 0) |
|
1126 goto fail; |
|
1127 product_id = strtoul(buf, NULL, 16); |
|
1128 } else if (line[0] == 'S' && line[1] == ':') { |
|
1129 if (get_tag_value(buf, sizeof(buf), line, "Product=", "") < 0) |
|
1130 goto fail; |
|
1131 pstrcpy(product_name, sizeof(product_name), buf); |
|
1132 } else if (line[0] == 'D' && line[1] == ':') { |
|
1133 if (get_tag_value(buf, sizeof(buf), line, "Cls=", " (") < 0) |
|
1134 goto fail; |
|
1135 class_id = strtoul(buf, NULL, 16); |
|
1136 } |
|
1137 fail: ; |
|
1138 } |
|
1139 if (device_count && (vendor_id || product_id)) { |
|
1140 /* Add the last device. */ |
|
1141 ret = func(opaque, bus_num, addr, class_id, vendor_id, |
|
1142 product_id, product_name, speed); |
|
1143 } |
|
1144 the_end: |
|
1145 if (f) |
|
1146 fclose(f); |
|
1147 return ret; |
|
1148 } |
|
1149 |
|
1150 /* |
|
1151 * Read sys file-system device file |
|
1152 * |
|
1153 * @line address of buffer to put file contents in |
|
1154 * @line_size size of line |
|
1155 * @device_file path to device file (printf format string) |
|
1156 * @device_name device being opened (inserted into device_file) |
|
1157 * |
|
1158 * @return 0 failed, 1 succeeded ('line' contains data) |
|
1159 */ |
|
1160 static int usb_host_read_file(char *line, size_t line_size, const char *device_file, const char *device_name) |
|
1161 { |
|
1162 FILE *f; |
|
1163 int ret = 0; |
|
1164 char filename[PATH_MAX]; |
|
1165 |
|
1166 snprintf(filename, PATH_MAX, device_file, device_name); |
|
1167 f = fopen(filename, "r"); |
|
1168 if (f) { |
|
1169 fgets(line, line_size, f); |
|
1170 fclose(f); |
|
1171 ret = 1; |
|
1172 } else { |
|
1173 term_printf("husb: could not open %s\n", filename); |
|
1174 } |
|
1175 |
|
1176 return ret; |
|
1177 } |
|
1178 |
|
1179 /* |
|
1180 * Use /sys/bus/usb/devices/ directory to determine host's USB |
|
1181 * devices. |
|
1182 * |
|
1183 * This code is based on Robert Schiele's original patches posted to |
|
1184 * the Novell bug-tracker https://bugzilla.novell.com/show_bug.cgi?id=241950 |
|
1185 */ |
|
1186 static int usb_host_scan_sys(void *opaque, USBScanFunc *func) |
|
1187 { |
|
1188 DIR *dir = 0; |
|
1189 char line[1024]; |
|
1190 int bus_num, addr, speed, class_id, product_id, vendor_id; |
|
1191 int ret = 0; |
|
1192 char product_name[512]; |
|
1193 struct dirent *de; |
|
1194 |
|
1195 dir = opendir(USBSYSBUS_PATH "/devices"); |
|
1196 if (!dir) { |
|
1197 perror("husb: cannot open devices directory"); |
|
1198 goto the_end; |
|
1199 } |
|
1200 |
|
1201 while ((de = readdir(dir))) { |
|
1202 if (de->d_name[0] != '.' && !strchr(de->d_name, ':')) { |
|
1203 char *tmpstr = de->d_name; |
|
1204 if (!strncmp(de->d_name, "usb", 3)) |
|
1205 tmpstr += 3; |
|
1206 bus_num = atoi(tmpstr); |
|
1207 |
|
1208 if (!usb_host_read_file(line, sizeof(line), USBSYSBUS_PATH "/devices/%s/devnum", de->d_name)) |
|
1209 goto the_end; |
|
1210 if (sscanf(line, "%d", &addr) != 1) |
|
1211 goto the_end; |
|
1212 |
|
1213 if (!usb_host_read_file(line, sizeof(line), USBSYSBUS_PATH "/devices/%s/bDeviceClass", de->d_name)) |
|
1214 goto the_end; |
|
1215 if (sscanf(line, "%x", &class_id) != 1) |
|
1216 goto the_end; |
|
1217 |
|
1218 if (!usb_host_read_file(line, sizeof(line), USBSYSBUS_PATH "/devices/%s/idVendor", de->d_name)) |
|
1219 goto the_end; |
|
1220 if (sscanf(line, "%x", &vendor_id) != 1) |
|
1221 goto the_end; |
|
1222 |
|
1223 if (!usb_host_read_file(line, sizeof(line), USBSYSBUS_PATH "/devices/%s/idProduct", de->d_name)) |
|
1224 goto the_end; |
|
1225 if (sscanf(line, "%x", &product_id) != 1) |
|
1226 goto the_end; |
|
1227 |
|
1228 if (!usb_host_read_file(line, sizeof(line), USBSYSBUS_PATH "/devices/%s/product", de->d_name)) { |
|
1229 *product_name = 0; |
|
1230 } else { |
|
1231 if (strlen(line) > 0) |
|
1232 line[strlen(line) - 1] = '\0'; |
|
1233 pstrcpy(product_name, sizeof(product_name), line); |
|
1234 } |
|
1235 |
|
1236 if (!usb_host_read_file(line, sizeof(line), USBSYSBUS_PATH "/devices/%s/speed", de->d_name)) |
|
1237 goto the_end; |
|
1238 if (!strcmp(line, "480\n")) |
|
1239 speed = USB_SPEED_HIGH; |
|
1240 else if (!strcmp(line, "1.5\n")) |
|
1241 speed = USB_SPEED_LOW; |
|
1242 else |
|
1243 speed = USB_SPEED_FULL; |
|
1244 |
|
1245 ret = func(opaque, bus_num, addr, class_id, vendor_id, |
|
1246 product_id, product_name, speed); |
|
1247 if (ret) |
|
1248 goto the_end; |
|
1249 } |
|
1250 } |
|
1251 the_end: |
|
1252 if (dir) |
|
1253 closedir(dir); |
|
1254 return ret; |
|
1255 } |
|
1256 |
|
1257 /* |
|
1258 * Determine how to access the host's USB devices and call the |
|
1259 * specific support function. |
|
1260 */ |
|
1261 static int usb_host_scan(void *opaque, USBScanFunc *func) |
|
1262 { |
|
1263 FILE *f = 0; |
|
1264 DIR *dir = 0; |
|
1265 int ret = 0; |
|
1266 const char *fs_type[] = {"unknown", "proc", "dev", "sys"}; |
|
1267 char devpath[PATH_MAX]; |
|
1268 |
|
1269 /* only check the host once */ |
|
1270 if (!usb_fs_type) { |
|
1271 f = fopen(USBPROCBUS_PATH "/devices", "r"); |
|
1272 if (f) { |
|
1273 /* devices found in /proc/bus/usb/ */ |
|
1274 strcpy(devpath, USBPROCBUS_PATH); |
|
1275 usb_fs_type = USB_FS_PROC; |
|
1276 fclose(f); |
|
1277 dprintf(USBDBG_DEVOPENED, USBPROCBUS_PATH); |
|
1278 goto found_devices; |
|
1279 } |
|
1280 /* try additional methods if an access method hasn't been found yet */ |
|
1281 f = fopen(USBDEVBUS_PATH "/devices", "r"); |
|
1282 if (f) { |
|
1283 /* devices found in /dev/bus/usb/ */ |
|
1284 strcpy(devpath, USBDEVBUS_PATH); |
|
1285 usb_fs_type = USB_FS_DEV; |
|
1286 fclose(f); |
|
1287 dprintf(USBDBG_DEVOPENED, USBDEVBUS_PATH); |
|
1288 goto found_devices; |
|
1289 } |
|
1290 dir = opendir(USBSYSBUS_PATH "/devices"); |
|
1291 if (dir) { |
|
1292 /* devices found in /dev/bus/usb/ (yes - not a mistake!) */ |
|
1293 strcpy(devpath, USBDEVBUS_PATH); |
|
1294 usb_fs_type = USB_FS_SYS; |
|
1295 closedir(dir); |
|
1296 dprintf(USBDBG_DEVOPENED, USBSYSBUS_PATH); |
|
1297 goto found_devices; |
|
1298 } |
|
1299 found_devices: |
|
1300 if (!usb_fs_type) { |
|
1301 term_printf("husb: unable to access USB devices\n"); |
|
1302 return -ENOENT; |
|
1303 } |
|
1304 |
|
1305 /* the module setting (used later for opening devices) */ |
|
1306 usb_host_device_path = qemu_mallocz(strlen(devpath)+1); |
|
1307 if (usb_host_device_path) { |
|
1308 strcpy(usb_host_device_path, devpath); |
|
1309 term_printf("husb: using %s file-system with %s\n", fs_type[usb_fs_type], usb_host_device_path); |
|
1310 } else { |
|
1311 /* out of memory? */ |
|
1312 perror("husb: unable to allocate memory for device path"); |
|
1313 return -ENOMEM; |
|
1314 } |
|
1315 } |
|
1316 |
|
1317 switch (usb_fs_type) { |
|
1318 case USB_FS_PROC: |
|
1319 case USB_FS_DEV: |
|
1320 ret = usb_host_scan_dev(opaque, func); |
|
1321 break; |
|
1322 case USB_FS_SYS: |
|
1323 ret = usb_host_scan_sys(opaque, func); |
|
1324 break; |
|
1325 default: |
|
1326 ret = -EINVAL; |
|
1327 break; |
|
1328 } |
|
1329 return ret; |
|
1330 } |
|
1331 |
|
1332 struct USBAutoFilter { |
|
1333 struct USBAutoFilter *next; |
|
1334 int bus_num; |
|
1335 int addr; |
|
1336 int vendor_id; |
|
1337 int product_id; |
|
1338 }; |
|
1339 |
|
1340 static QEMUTimer *usb_auto_timer; |
|
1341 static struct USBAutoFilter *usb_auto_filter; |
|
1342 |
|
1343 static int usb_host_auto_scan(void *opaque, int bus_num, int addr, |
|
1344 int class_id, int vendor_id, int product_id, |
|
1345 const char *product_name, int speed) |
|
1346 { |
|
1347 struct USBAutoFilter *f; |
|
1348 struct USBDevice *dev; |
|
1349 |
|
1350 /* Ignore hubs */ |
|
1351 if (class_id == 9) |
|
1352 return 0; |
|
1353 |
|
1354 for (f = usb_auto_filter; f; f = f->next) { |
|
1355 if (f->bus_num >= 0 && f->bus_num != bus_num) |
|
1356 continue; |
|
1357 |
|
1358 if (f->addr >= 0 && f->addr != addr) |
|
1359 continue; |
|
1360 |
|
1361 if (f->vendor_id >= 0 && f->vendor_id != vendor_id) |
|
1362 continue; |
|
1363 |
|
1364 if (f->product_id >= 0 && f->product_id != product_id) |
|
1365 continue; |
|
1366 |
|
1367 /* We got a match */ |
|
1368 |
|
1369 /* Allredy attached ? */ |
|
1370 if (hostdev_find(bus_num, addr)) |
|
1371 return 0; |
|
1372 |
|
1373 dprintf("husb: auto open: bus_num %d addr %d\n", bus_num, addr); |
|
1374 |
|
1375 dev = usb_host_device_open_addr(bus_num, addr, product_name); |
|
1376 if (dev) |
|
1377 usb_device_add_dev(dev); |
|
1378 } |
|
1379 |
|
1380 return 0; |
|
1381 } |
|
1382 |
|
1383 static void usb_host_auto_timer(void *unused) |
|
1384 { |
|
1385 usb_host_scan(NULL, usb_host_auto_scan); |
|
1386 qemu_mod_timer(usb_auto_timer, qemu_get_clock(rt_clock) + 2000); |
|
1387 } |
|
1388 |
|
1389 /* |
|
1390 * Autoconnect filter |
|
1391 * Format: |
|
1392 * auto:bus:dev[:vid:pid] |
|
1393 * auto:bus.dev[:vid:pid] |
|
1394 * |
|
1395 * bus - bus number (dec, * means any) |
|
1396 * dev - device number (dec, * means any) |
|
1397 * vid - vendor id (hex, * means any) |
|
1398 * pid - product id (hex, * means any) |
|
1399 * |
|
1400 * See 'lsusb' output. |
|
1401 */ |
|
1402 static int parse_filter(const char *spec, struct USBAutoFilter *f) |
|
1403 { |
|
1404 enum { BUS, DEV, VID, PID, DONE }; |
|
1405 const char *p = spec; |
|
1406 int i; |
|
1407 |
|
1408 f->bus_num = -1; |
|
1409 f->addr = -1; |
|
1410 f->vendor_id = -1; |
|
1411 f->product_id = -1; |
|
1412 |
|
1413 for (i = BUS; i < DONE; i++) { |
|
1414 p = strpbrk(p, ":."); |
|
1415 if (!p) break; |
|
1416 p++; |
|
1417 |
|
1418 if (*p == '*') |
|
1419 continue; |
|
1420 |
|
1421 switch(i) { |
|
1422 case BUS: f->bus_num = strtol(p, NULL, 10); break; |
|
1423 case DEV: f->addr = strtol(p, NULL, 10); break; |
|
1424 case VID: f->vendor_id = strtol(p, NULL, 16); break; |
|
1425 case PID: f->product_id = strtol(p, NULL, 16); break; |
|
1426 } |
|
1427 } |
|
1428 |
|
1429 if (i < DEV) { |
|
1430 fprintf(stderr, "husb: invalid auto filter spec %s\n", spec); |
|
1431 return -1; |
|
1432 } |
|
1433 |
|
1434 return 0; |
|
1435 } |
|
1436 |
|
1437 static int match_filter(const struct USBAutoFilter *f1, |
|
1438 const struct USBAutoFilter *f2) |
|
1439 { |
|
1440 return f1->bus_num == f2->bus_num && |
|
1441 f1->addr == f2->addr && |
|
1442 f1->vendor_id == f2->vendor_id && |
|
1443 f1->product_id == f2->product_id; |
|
1444 } |
|
1445 |
|
1446 static int usb_host_auto_add(const char *spec) |
|
1447 { |
|
1448 struct USBAutoFilter filter, *f; |
|
1449 |
|
1450 if (parse_filter(spec, &filter) < 0) |
|
1451 return -1; |
|
1452 |
|
1453 f = qemu_mallocz(sizeof(*f)); |
|
1454 if (!f) { |
|
1455 fprintf(stderr, "husb: failed to allocate auto filter\n"); |
|
1456 return -1; |
|
1457 } |
|
1458 |
|
1459 *f = filter; |
|
1460 |
|
1461 if (!usb_auto_filter) { |
|
1462 /* |
|
1463 * First entry. Init and start the monitor. |
|
1464 * Right now we're using timer to check for new devices. |
|
1465 * If this turns out to be too expensive we can move that into a |
|
1466 * separate thread. |
|
1467 */ |
|
1468 usb_auto_timer = qemu_new_timer(rt_clock, usb_host_auto_timer, NULL); |
|
1469 if (!usb_auto_timer) { |
|
1470 fprintf(stderr, "husb: failed to allocate auto scan timer\n"); |
|
1471 qemu_free(f); |
|
1472 return -1; |
|
1473 } |
|
1474 |
|
1475 /* Check for new devices every two seconds */ |
|
1476 qemu_mod_timer(usb_auto_timer, qemu_get_clock(rt_clock) + 2000); |
|
1477 } |
|
1478 |
|
1479 dprintf("husb: added auto filter: bus_num %d addr %d vid %d pid %d\n", |
|
1480 f->bus_num, f->addr, f->vendor_id, f->product_id); |
|
1481 |
|
1482 f->next = usb_auto_filter; |
|
1483 usb_auto_filter = f; |
|
1484 |
|
1485 return 0; |
|
1486 } |
|
1487 |
|
1488 static int usb_host_auto_del(const char *spec) |
|
1489 { |
|
1490 struct USBAutoFilter *pf = usb_auto_filter; |
|
1491 struct USBAutoFilter **prev = &usb_auto_filter; |
|
1492 struct USBAutoFilter filter; |
|
1493 |
|
1494 if (parse_filter(spec, &filter) < 0) |
|
1495 return -1; |
|
1496 |
|
1497 while (pf) { |
|
1498 if (match_filter(pf, &filter)) { |
|
1499 dprintf("husb: removed auto filter: bus_num %d addr %d vid %d pid %d\n", |
|
1500 pf->bus_num, pf->addr, pf->vendor_id, pf->product_id); |
|
1501 |
|
1502 *prev = pf->next; |
|
1503 |
|
1504 if (!usb_auto_filter) { |
|
1505 /* No more filters. Stop scanning. */ |
|
1506 qemu_del_timer(usb_auto_timer); |
|
1507 qemu_free_timer(usb_auto_timer); |
|
1508 } |
|
1509 |
|
1510 return 0; |
|
1511 } |
|
1512 |
|
1513 prev = &pf->next; |
|
1514 pf = pf->next; |
|
1515 } |
|
1516 |
|
1517 return -1; |
|
1518 } |
|
1519 |
|
1520 typedef struct FindDeviceState { |
|
1521 int vendor_id; |
|
1522 int product_id; |
|
1523 int bus_num; |
|
1524 int addr; |
|
1525 char product_name[PRODUCT_NAME_SZ]; |
|
1526 } FindDeviceState; |
|
1527 |
|
1528 static int usb_host_find_device_scan(void *opaque, int bus_num, int addr, |
|
1529 int class_id, |
|
1530 int vendor_id, int product_id, |
|
1531 const char *product_name, int speed) |
|
1532 { |
|
1533 FindDeviceState *s = opaque; |
|
1534 if ((vendor_id == s->vendor_id && |
|
1535 product_id == s->product_id) || |
|
1536 (bus_num == s->bus_num && |
|
1537 addr == s->addr)) { |
|
1538 pstrcpy(s->product_name, PRODUCT_NAME_SZ, product_name); |
|
1539 s->bus_num = bus_num; |
|
1540 s->addr = addr; |
|
1541 return 1; |
|
1542 } else { |
|
1543 return 0; |
|
1544 } |
|
1545 } |
|
1546 |
|
1547 /* the syntax is : |
|
1548 'bus.addr' (decimal numbers) or |
|
1549 'vendor_id:product_id' (hexa numbers) */ |
|
1550 static int usb_host_find_device(int *pbus_num, int *paddr, |
|
1551 char *product_name, int product_name_size, |
|
1552 const char *devname) |
|
1553 { |
|
1554 const char *p; |
|
1555 int ret; |
|
1556 FindDeviceState fs; |
|
1557 |
|
1558 p = strchr(devname, '.'); |
|
1559 if (p) { |
|
1560 *pbus_num = strtoul(devname, NULL, 0); |
|
1561 *paddr = strtoul(p + 1, NULL, 0); |
|
1562 fs.bus_num = *pbus_num; |
|
1563 fs.addr = *paddr; |
|
1564 ret = usb_host_scan(&fs, usb_host_find_device_scan); |
|
1565 if (ret) |
|
1566 pstrcpy(product_name, product_name_size, fs.product_name); |
|
1567 return 0; |
|
1568 } |
|
1569 |
|
1570 p = strchr(devname, ':'); |
|
1571 if (p) { |
|
1572 fs.vendor_id = strtoul(devname, NULL, 16); |
|
1573 fs.product_id = strtoul(p + 1, NULL, 16); |
|
1574 ret = usb_host_scan(&fs, usb_host_find_device_scan); |
|
1575 if (ret) { |
|
1576 *pbus_num = fs.bus_num; |
|
1577 *paddr = fs.addr; |
|
1578 pstrcpy(product_name, product_name_size, fs.product_name); |
|
1579 return 0; |
|
1580 } |
|
1581 } |
|
1582 return -1; |
|
1583 } |
|
1584 |
|
1585 /**********************/ |
|
1586 /* USB host device info */ |
|
1587 |
|
1588 struct usb_class_info { |
|
1589 int class; |
|
1590 const char *class_name; |
|
1591 }; |
|
1592 |
|
1593 static const struct usb_class_info usb_class_info[] = { |
|
1594 { USB_CLASS_AUDIO, "Audio"}, |
|
1595 { USB_CLASS_COMM, "Communication"}, |
|
1596 { USB_CLASS_HID, "HID"}, |
|
1597 { USB_CLASS_HUB, "Hub" }, |
|
1598 { USB_CLASS_PHYSICAL, "Physical" }, |
|
1599 { USB_CLASS_PRINTER, "Printer" }, |
|
1600 { USB_CLASS_MASS_STORAGE, "Storage" }, |
|
1601 { USB_CLASS_CDC_DATA, "Data" }, |
|
1602 { USB_CLASS_APP_SPEC, "Application Specific" }, |
|
1603 { USB_CLASS_VENDOR_SPEC, "Vendor Specific" }, |
|
1604 { USB_CLASS_STILL_IMAGE, "Still Image" }, |
|
1605 { USB_CLASS_CSCID, "Smart Card" }, |
|
1606 { USB_CLASS_CONTENT_SEC, "Content Security" }, |
|
1607 { -1, NULL } |
|
1608 }; |
|
1609 |
|
1610 static const char *usb_class_str(uint8_t class) |
|
1611 { |
|
1612 const struct usb_class_info *p; |
|
1613 for(p = usb_class_info; p->class != -1; p++) { |
|
1614 if (p->class == class) |
|
1615 break; |
|
1616 } |
|
1617 return p->class_name; |
|
1618 } |
|
1619 |
|
1620 static void usb_info_device(int bus_num, int addr, int class_id, |
|
1621 int vendor_id, int product_id, |
|
1622 const char *product_name, |
|
1623 int speed) |
|
1624 { |
|
1625 const char *class_str, *speed_str; |
|
1626 |
|
1627 switch(speed) { |
|
1628 case USB_SPEED_LOW: |
|
1629 speed_str = "1.5"; |
|
1630 break; |
|
1631 case USB_SPEED_FULL: |
|
1632 speed_str = "12"; |
|
1633 break; |
|
1634 case USB_SPEED_HIGH: |
|
1635 speed_str = "480"; |
|
1636 break; |
|
1637 default: |
|
1638 speed_str = "?"; |
|
1639 break; |
|
1640 } |
|
1641 |
|
1642 term_printf(" Device %d.%d, speed %s Mb/s\n", |
|
1643 bus_num, addr, speed_str); |
|
1644 class_str = usb_class_str(class_id); |
|
1645 if (class_str) |
|
1646 term_printf(" %s:", class_str); |
|
1647 else |
|
1648 term_printf(" Class %02x:", class_id); |
|
1649 term_printf(" USB device %04x:%04x", vendor_id, product_id); |
|
1650 if (product_name[0] != '\0') |
|
1651 term_printf(", %s", product_name); |
|
1652 term_printf("\n"); |
|
1653 } |
|
1654 |
|
1655 static int usb_host_info_device(void *opaque, int bus_num, int addr, |
|
1656 int class_id, |
|
1657 int vendor_id, int product_id, |
|
1658 const char *product_name, |
|
1659 int speed) |
|
1660 { |
|
1661 usb_info_device(bus_num, addr, class_id, vendor_id, product_id, |
|
1662 product_name, speed); |
|
1663 return 0; |
|
1664 } |
|
1665 |
|
1666 static void dec2str(int val, char *str, size_t size) |
|
1667 { |
|
1668 if (val == -1) |
|
1669 snprintf(str, size, "*"); |
|
1670 else |
|
1671 snprintf(str, size, "%d", val); |
|
1672 } |
|
1673 |
|
1674 static void hex2str(int val, char *str, size_t size) |
|
1675 { |
|
1676 if (val == -1) |
|
1677 snprintf(str, size, "*"); |
|
1678 else |
|
1679 snprintf(str, size, "%x", val); |
|
1680 } |
|
1681 |
|
1682 void usb_host_info(void) |
|
1683 { |
|
1684 struct USBAutoFilter *f; |
|
1685 |
|
1686 usb_host_scan(NULL, usb_host_info_device); |
|
1687 |
|
1688 if (usb_auto_filter) |
|
1689 term_printf(" Auto filters:\n"); |
|
1690 for (f = usb_auto_filter; f; f = f->next) { |
|
1691 char bus[10], addr[10], vid[10], pid[10]; |
|
1692 dec2str(f->bus_num, bus, sizeof(bus)); |
|
1693 dec2str(f->addr, addr, sizeof(addr)); |
|
1694 hex2str(f->vendor_id, vid, sizeof(vid)); |
|
1695 hex2str(f->product_id, pid, sizeof(pid)); |
|
1696 term_printf(" Device %s.%s ID %s:%s\n", bus, addr, vid, pid); |
|
1697 } |
|
1698 } |