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1 /* |
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2 * BSD host USB redirector |
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3 * |
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4 * Copyright (c) 2006 Lonnie Mendez |
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5 * Portions of code and concepts borrowed from |
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6 * usb-linux.c and libusb's bsd.c and are copyright their respective owners. |
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7 * |
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8 * Permission is hereby granted, free of charge, to any person obtaining a copy |
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9 * of this software and associated documentation files (the "Software"), to deal |
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10 * in the Software without restriction, including without limitation the rights |
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11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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12 * copies of the Software, and to permit persons to whom the Software is |
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13 * furnished to do so, subject to the following conditions: |
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14 * |
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15 * The above copyright notice and this permission notice shall be included in |
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16 * all copies or substantial portions of the Software. |
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17 * |
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18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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21 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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24 * THE SOFTWARE. |
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25 */ |
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26 |
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27 #include "qemu-common.h" |
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28 #include "console.h" |
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29 #include "hw/usb.h" |
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30 |
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31 /* usb.h declares these */ |
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32 #undef USB_SPEED_HIGH |
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33 #undef USB_SPEED_FULL |
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34 #undef USB_SPEED_LOW |
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35 |
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36 #include <sys/ioctl.h> |
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37 #include <dev/usb/usb.h> |
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38 #include <signal.h> |
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39 |
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40 /* This value has maximum potential at 16. |
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41 * You should also set hw.usb.debug to gain |
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42 * more detailed view. |
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43 */ |
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44 //#define DEBUG |
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45 #define UGEN_DEBUG_LEVEL 0 |
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46 |
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47 |
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48 typedef int USBScanFunc(void *opaque, int bus_num, int addr, int class_id, |
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49 int vendor_id, int product_id, |
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50 const char *product_name, int speed); |
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51 static int usb_host_find_device(int *pbus_num, int *paddr, |
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52 const char *devname); |
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53 |
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54 typedef struct USBHostDevice { |
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55 USBDevice dev; |
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56 int ep_fd[USB_MAX_ENDPOINTS]; |
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57 int devfd; |
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58 char devpath[32]; |
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59 } USBHostDevice; |
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60 |
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61 |
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62 static int ensure_ep_open(USBHostDevice *dev, int ep, int mode) |
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63 { |
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64 char buf[32]; |
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65 int fd; |
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66 |
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67 /* Get the address for this endpoint */ |
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68 ep = UE_GET_ADDR(ep); |
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69 |
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70 if (dev->ep_fd[ep] < 0) { |
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71 #ifdef __FreeBSD__ |
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72 snprintf(buf, sizeof(buf) - 1, "%s.%d", dev->devpath, ep); |
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73 #else |
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74 snprintf(buf, sizeof(buf) - 1, "%s.%02d", dev->devpath, ep); |
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75 #endif |
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76 /* Try to open it O_RDWR first for those devices which have in and out |
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77 * endpoints with the same address (eg 0x02 and 0x82) |
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78 */ |
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79 fd = open(buf, O_RDWR); |
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80 if (fd < 0 && errno == ENXIO) |
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81 fd = open(buf, mode); |
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82 if (fd < 0) { |
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83 #ifdef DEBUG |
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84 printf("ensure_ep_open: failed to open device endpoint %s: %s\n", |
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85 buf, strerror(errno)); |
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86 #endif |
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87 } |
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88 dev->ep_fd[ep] = fd; |
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89 } |
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90 |
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91 return dev->ep_fd[ep]; |
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92 } |
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93 |
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94 static void ensure_eps_closed(USBHostDevice *dev) |
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95 { |
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96 int epnum = 1; |
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97 |
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98 if (!dev) |
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99 return; |
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100 |
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101 while (epnum < USB_MAX_ENDPOINTS) { |
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102 if (dev->ep_fd[epnum] >= 0) { |
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103 close(dev->ep_fd[epnum]); |
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104 dev->ep_fd[epnum] = -1; |
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105 } |
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106 epnum++; |
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107 } |
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108 } |
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109 |
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110 static void usb_host_handle_reset(USBDevice *dev) |
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111 { |
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112 #if 0 |
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113 USBHostDevice *s = (USBHostDevice *)dev; |
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114 #endif |
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115 } |
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116 |
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117 /* XXX: |
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118 * -check device states against transfer requests |
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119 * and return appropriate response |
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120 */ |
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121 static int usb_host_handle_control(USBDevice *dev, |
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122 int request, |
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123 int value, |
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124 int index, |
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125 int length, |
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126 uint8_t *data) |
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127 { |
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128 USBHostDevice *s = (USBHostDevice *)dev; |
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129 struct usb_ctl_request req; |
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130 struct usb_alt_interface aiface; |
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131 int ret, timeout = 50; |
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132 |
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133 if ((request >> 8) == UT_WRITE_DEVICE && |
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134 (request & 0xff) == UR_SET_ADDRESS) { |
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135 |
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136 /* specific SET_ADDRESS support */ |
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137 dev->addr = value; |
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138 return 0; |
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139 } else if ((request >> 8) == UT_WRITE_DEVICE && |
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140 (request & 0xff) == UR_SET_CONFIG) { |
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141 |
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142 ensure_eps_closed(s); /* can't do this without all eps closed */ |
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143 |
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144 ret = ioctl(s->devfd, USB_SET_CONFIG, &value); |
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145 if (ret < 0) { |
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146 #ifdef DEBUG |
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147 printf("handle_control: failed to set configuration - %s\n", |
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148 strerror(errno)); |
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149 #endif |
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150 return USB_RET_STALL; |
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151 } |
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152 |
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153 return 0; |
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154 } else if ((request >> 8) == UT_WRITE_INTERFACE && |
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155 (request & 0xff) == UR_SET_INTERFACE) { |
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156 |
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157 aiface.uai_interface_index = index; |
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158 aiface.uai_alt_no = value; |
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159 |
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160 ensure_eps_closed(s); /* can't do this without all eps closed */ |
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161 ret = ioctl(s->devfd, USB_SET_ALTINTERFACE, &aiface); |
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162 if (ret < 0) { |
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163 #ifdef DEBUG |
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164 printf("handle_control: failed to set alternate interface - %s\n", |
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165 strerror(errno)); |
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166 #endif |
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167 return USB_RET_STALL; |
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168 } |
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169 |
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170 return 0; |
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171 } else { |
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172 req.ucr_request.bmRequestType = request >> 8; |
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173 req.ucr_request.bRequest = request & 0xff; |
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174 USETW(req.ucr_request.wValue, value); |
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175 USETW(req.ucr_request.wIndex, index); |
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176 USETW(req.ucr_request.wLength, length); |
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177 req.ucr_data = data; |
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178 req.ucr_flags = USBD_SHORT_XFER_OK; |
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179 |
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180 ret = ioctl(s->devfd, USB_SET_TIMEOUT, &timeout); |
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181 #if (__NetBSD__ || __OpenBSD__) |
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182 if (ret < 0 && errno != EINVAL) { |
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183 #else |
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184 if (ret < 0) { |
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185 #endif |
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186 #ifdef DEBUG |
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187 printf("handle_control: setting timeout failed - %s\n", |
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188 strerror(errno)); |
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189 #endif |
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190 } |
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191 |
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192 ret = ioctl(s->devfd, USB_DO_REQUEST, &req); |
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193 /* ugen returns EIO for usbd_do_request_ no matter what |
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194 * happens with the transfer */ |
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195 if (ret < 0) { |
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196 #ifdef DEBUG |
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197 printf("handle_control: error after request - %s\n", |
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198 strerror(errno)); |
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199 #endif |
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200 return USB_RET_NAK; // STALL |
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201 } else { |
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202 return req.ucr_actlen; |
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203 } |
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204 } |
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205 } |
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206 |
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207 static int usb_host_handle_data(USBDevice *dev, USBPacket *p) |
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208 { |
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209 USBHostDevice *s = (USBHostDevice *)dev; |
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210 int ret, fd, mode; |
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211 int one = 1, shortpacket = 0, timeout = 50; |
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212 sigset_t new_mask, old_mask; |
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213 uint8_t devep = p->devep; |
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214 |
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215 /* protect data transfers from SIGALRM signal */ |
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216 sigemptyset(&new_mask); |
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217 sigaddset(&new_mask, SIGALRM); |
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218 sigprocmask(SIG_BLOCK, &new_mask, &old_mask); |
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219 |
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220 if (p->pid == USB_TOKEN_IN) { |
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221 devep |= 0x80; |
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222 mode = O_RDONLY; |
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223 shortpacket = 1; |
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224 } else { |
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225 mode = O_WRONLY; |
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226 } |
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227 |
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228 fd = ensure_ep_open(s, devep, mode); |
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229 if (fd < 0) { |
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230 sigprocmask(SIG_SETMASK, &old_mask, NULL); |
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231 return USB_RET_NODEV; |
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232 } |
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233 |
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234 if (ioctl(fd, USB_SET_TIMEOUT, &timeout) < 0) { |
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235 #ifdef DEBUG |
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236 printf("handle_data: failed to set timeout - %s\n", |
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237 strerror(errno)); |
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238 #endif |
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239 } |
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240 |
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241 if (shortpacket) { |
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242 if (ioctl(fd, USB_SET_SHORT_XFER, &one) < 0) { |
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243 #ifdef DEBUG |
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244 printf("handle_data: failed to set short xfer mode - %s\n", |
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245 strerror(errno)); |
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246 #endif |
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247 sigprocmask(SIG_SETMASK, &old_mask, NULL); |
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248 } |
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249 } |
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250 |
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251 if (p->pid == USB_TOKEN_IN) |
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252 ret = read(fd, p->data, p->len); |
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253 else |
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254 ret = write(fd, p->data, p->len); |
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255 |
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256 sigprocmask(SIG_SETMASK, &old_mask, NULL); |
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257 |
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258 if (ret < 0) { |
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259 #ifdef DEBUG |
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260 printf("handle_data: error after %s data - %s\n", |
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261 pid == USB_TOKEN_IN ? "reading" : "writing", strerror(errno)); |
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262 #endif |
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263 switch(errno) { |
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264 case ETIMEDOUT: |
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265 case EINTR: |
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266 return USB_RET_NAK; |
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267 default: |
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268 return USB_RET_STALL; |
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269 } |
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270 } else { |
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271 return ret; |
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272 } |
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273 } |
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274 |
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275 static void usb_host_handle_destroy(USBDevice *opaque) |
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276 { |
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277 USBHostDevice *s = (USBHostDevice *)opaque; |
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278 int i; |
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279 |
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280 for (i = 0; i < USB_MAX_ENDPOINTS; i++) |
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281 if (s->ep_fd[i] >= 0) |
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282 close(s->ep_fd[i]); |
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283 |
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284 if (s->devfd < 0) |
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285 return; |
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286 |
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287 close(s->devfd); |
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288 |
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289 qemu_free(s); |
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290 } |
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291 |
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292 USBDevice *usb_host_device_open(const char *devname) |
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293 { |
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294 struct usb_device_info bus_info, dev_info; |
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295 USBHostDevice *dev; |
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296 char ctlpath[PATH_MAX + 1]; |
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297 char buspath[PATH_MAX + 1]; |
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298 int bfd, dfd, bus, address, i; |
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299 int ugendebug = UGEN_DEBUG_LEVEL; |
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300 |
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301 if (usb_host_find_device(&bus, &address, devname) < 0) |
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302 return NULL; |
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303 |
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304 snprintf(buspath, PATH_MAX, "/dev/usb%d", bus); |
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305 |
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306 bfd = open(buspath, O_RDWR); |
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307 if (bfd < 0) { |
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308 #ifdef DEBUG |
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309 printf("usb_host_device_open: failed to open usb bus - %s\n", |
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310 strerror(errno)); |
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311 #endif |
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312 return NULL; |
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313 } |
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314 |
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315 bus_info.udi_addr = address; |
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316 if (ioctl(bfd, USB_DEVICEINFO, &bus_info) < 0) { |
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317 #ifdef DEBUG |
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318 printf("usb_host_device_open: failed to grab bus information - %s\n", |
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319 strerror(errno)); |
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320 #endif |
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321 return NULL; |
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322 } |
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323 |
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324 #ifdef __FreeBSD__ |
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325 snprintf(ctlpath, PATH_MAX, "/dev/%s", bus_info.udi_devnames[0]); |
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326 #else |
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327 snprintf(ctlpath, PATH_MAX, "/dev/%s.00", bus_info.udi_devnames[0]); |
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328 #endif |
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329 |
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330 dfd = open(ctlpath, O_RDWR); |
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331 if (dfd < 0) { |
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332 dfd = open(ctlpath, O_RDONLY); |
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333 if (dfd < 0) { |
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334 #ifdef DEBUG |
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335 printf("usb_host_device_open: failed to open usb device %s - %s\n", |
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336 ctlpath, strerror(errno)); |
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337 #endif |
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338 } |
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339 } |
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340 |
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341 if (dfd >= 0) { |
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342 dev = qemu_mallocz(sizeof(USBHostDevice)); |
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343 if (!dev) |
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344 goto fail; |
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345 dev->devfd = dfd; |
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346 |
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347 if (ioctl(dfd, USB_GET_DEVICEINFO, &dev_info) < 0) { |
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348 #ifdef DEBUG |
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349 printf("usb_host_device_open: failed to grab device info - %s\n", |
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350 strerror(errno)); |
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351 #endif |
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352 goto fail; |
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353 } |
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354 |
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355 if (dev_info.udi_speed == 1) |
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356 dev->dev.speed = USB_SPEED_LOW - 1; |
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357 else |
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358 dev->dev.speed = USB_SPEED_FULL - 1; |
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359 |
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360 dev->dev.handle_packet = usb_generic_handle_packet; |
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361 |
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362 dev->dev.handle_reset = usb_host_handle_reset; |
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363 dev->dev.handle_control = usb_host_handle_control; |
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364 dev->dev.handle_data = usb_host_handle_data; |
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365 dev->dev.handle_destroy = usb_host_handle_destroy; |
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366 |
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367 if (strncmp(dev_info.udi_product, "product", 7) != 0) |
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368 pstrcpy(dev->dev.devname, sizeof(dev->dev.devname), |
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369 dev_info.udi_product); |
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370 else |
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371 snprintf(dev->dev.devname, sizeof(dev->dev.devname), |
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372 "host:%s", devname); |
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373 |
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374 pstrcpy(dev->devpath, sizeof(dev->devpath), "/dev/"); |
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375 strcat(dev->devpath, dev_info.udi_devnames[0]); |
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376 |
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377 /* Mark the endpoints as not yet open */ |
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378 for (i = 0; i < USB_MAX_ENDPOINTS; i++) |
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379 dev->ep_fd[i] = -1; |
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380 |
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381 ioctl(dfd, USB_SETDEBUG, &ugendebug); |
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382 |
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383 return (USBDevice *)dev; |
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384 } |
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385 |
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386 fail: |
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387 return NULL; |
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388 } |
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389 |
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390 static int usb_host_scan(void *opaque, USBScanFunc *func) |
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391 { |
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392 struct usb_device_info bus_info; |
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393 struct usb_device_info dev_info; |
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394 uint16_t vendor_id, product_id, class_id, speed; |
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395 int bfd, dfd, bus, address; |
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396 char busbuf[20], devbuf[20], product_name[256]; |
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397 int ret = 0; |
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398 |
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399 for (bus = 0; bus < 10; bus++) { |
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400 |
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401 snprintf(busbuf, sizeof(busbuf) - 1, "/dev/usb%d", bus); |
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402 bfd = open(busbuf, O_RDWR); |
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403 if (bfd < 0) |
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404 continue; |
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405 |
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406 for (address = 1; address < 127; address++) { |
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407 |
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408 bus_info.udi_addr = address; |
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409 if (ioctl(bfd, USB_DEVICEINFO, &bus_info) < 0) |
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410 continue; |
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411 |
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412 /* only list devices that can be used by generic layer */ |
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413 if (strncmp(bus_info.udi_devnames[0], "ugen", 4) != 0) |
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414 continue; |
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415 |
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416 #ifdef __FreeBSD__ |
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417 snprintf(devbuf, sizeof(devbuf) - 1, "/dev/%s", bus_info.udi_devnames[0]); |
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418 #else |
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419 snprintf(devbuf, sizeof(devbuf) - 1, "/dev/%s.00", bus_info.udi_devnames[0]); |
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420 #endif |
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421 |
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422 dfd = open(devbuf, O_RDONLY); |
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423 if (dfd < 0) { |
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424 #ifdef DEBUG |
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425 printf("usb_host_scan: couldn't open device %s - %s\n", devbuf, |
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426 strerror(errno)); |
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427 #endif |
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428 continue; |
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429 } |
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430 |
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431 if (ioctl(dfd, USB_GET_DEVICEINFO, &dev_info) < 0) |
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432 printf("usb_host_scan: couldn't get device information for %s - %s\n", |
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433 devbuf, strerror(errno)); |
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434 |
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435 // XXX: might need to fixup endianess of word values before copying over |
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436 |
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437 vendor_id = dev_info.udi_vendorNo; |
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438 product_id = dev_info.udi_productNo; |
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439 class_id = dev_info.udi_class; |
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440 speed = dev_info.udi_speed; |
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441 |
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442 if (strncmp(dev_info.udi_product, "product", 7) != 0) |
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443 pstrcpy(product_name, sizeof(product_name), |
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444 dev_info.udi_product); |
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445 else |
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446 product_name[0] = '\0'; |
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447 |
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448 ret = func(opaque, bus, address, class_id, vendor_id, |
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449 product_id, product_name, speed); |
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450 |
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451 close(dfd); |
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452 |
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453 if (ret) |
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454 goto the_end; |
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455 } |
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456 |
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457 close(bfd); |
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458 } |
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459 |
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460 the_end: |
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461 return ret; |
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462 } |
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463 |
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464 typedef struct FindDeviceState { |
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465 int vendor_id; |
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466 int product_id; |
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467 int bus_num; |
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468 int addr; |
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469 } FindDeviceState; |
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470 |
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471 static int usb_host_find_device_scan(void *opaque, int bus_num, int addr, |
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472 int class_id, |
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473 int vendor_id, int product_id, |
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474 const char *product_name, int speed) |
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475 { |
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476 FindDeviceState *s = opaque; |
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477 if (vendor_id == s->vendor_id && |
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478 product_id == s->product_id) { |
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479 s->bus_num = bus_num; |
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480 s->addr = addr; |
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481 return 1; |
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482 } else { |
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483 return 0; |
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484 } |
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485 } |
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486 |
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487 |
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488 /* the syntax is : |
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489 'bus.addr' (decimal numbers) or |
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490 'vendor_id:product_id' (hexa numbers) */ |
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491 static int usb_host_find_device(int *pbus_num, int *paddr, |
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492 const char *devname) |
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493 { |
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494 const char *p; |
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495 int ret; |
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496 FindDeviceState fs; |
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497 |
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498 p = strchr(devname, '.'); |
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499 if (p) { |
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500 *pbus_num = strtoul(devname, NULL, 0); |
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501 *paddr = strtoul(p + 1, NULL, 0); |
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502 return 0; |
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503 } |
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504 p = strchr(devname, ':'); |
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505 if (p) { |
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506 fs.vendor_id = strtoul(devname, NULL, 16); |
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507 fs.product_id = strtoul(p + 1, NULL, 16); |
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508 ret = usb_host_scan(&fs, usb_host_find_device_scan); |
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509 if (ret) { |
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510 *pbus_num = fs.bus_num; |
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511 *paddr = fs.addr; |
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512 return 0; |
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513 } |
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514 } |
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515 return -1; |
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516 } |
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517 |
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518 /**********************/ |
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519 /* USB host device info */ |
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520 |
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521 struct usb_class_info { |
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522 int class; |
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523 const char *class_name; |
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524 }; |
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525 |
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526 static const struct usb_class_info usb_class_info[] = { |
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527 { USB_CLASS_AUDIO, "Audio"}, |
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528 { USB_CLASS_COMM, "Communication"}, |
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529 { USB_CLASS_HID, "HID"}, |
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530 { USB_CLASS_HUB, "Hub" }, |
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531 { USB_CLASS_PHYSICAL, "Physical" }, |
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532 { USB_CLASS_PRINTER, "Printer" }, |
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533 { USB_CLASS_MASS_STORAGE, "Storage" }, |
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534 { USB_CLASS_CDC_DATA, "Data" }, |
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535 { USB_CLASS_APP_SPEC, "Application Specific" }, |
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536 { USB_CLASS_VENDOR_SPEC, "Vendor Specific" }, |
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537 { USB_CLASS_STILL_IMAGE, "Still Image" }, |
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538 { USB_CLASS_CSCID, "Smart Card" }, |
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539 { USB_CLASS_CONTENT_SEC, "Content Security" }, |
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540 { -1, NULL } |
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541 }; |
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542 |
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543 static const char *usb_class_str(uint8_t class) |
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544 { |
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545 const struct usb_class_info *p; |
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546 for (p = usb_class_info; p->class != -1; p++) { |
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547 if (p->class == class) |
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548 break; |
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549 } |
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550 return p->class_name; |
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551 } |
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552 |
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553 void usb_info_device(int bus_num, int addr, int class_id, |
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554 int vendor_id, int product_id, |
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555 const char *product_name, |
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556 int speed) |
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557 { |
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558 const char *class_str, *speed_str; |
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559 |
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560 switch(speed) { |
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561 case USB_SPEED_LOW: |
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562 speed_str = "1.5"; |
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563 break; |
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564 case USB_SPEED_FULL: |
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565 speed_str = "12"; |
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566 break; |
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567 case USB_SPEED_HIGH: |
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568 speed_str = "480"; |
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569 break; |
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570 default: |
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571 speed_str = "?"; |
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572 break; |
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573 } |
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574 |
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575 term_printf(" Device %d.%d, speed %s Mb/s\n", |
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576 bus_num, addr, speed_str); |
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577 class_str = usb_class_str(class_id); |
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578 if (class_str) |
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579 term_printf(" %s:", class_str); |
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580 else |
|
581 term_printf(" Class %02x:", class_id); |
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582 term_printf(" USB device %04x:%04x", vendor_id, product_id); |
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583 if (product_name[0] != '\0') |
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584 term_printf(", %s", product_name); |
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585 term_printf("\n"); |
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586 } |
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587 |
|
588 static int usb_host_info_device(void *opaque, int bus_num, int addr, |
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589 int class_id, |
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590 int vendor_id, int product_id, |
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591 const char *product_name, |
|
592 int speed) |
|
593 { |
|
594 usb_info_device(bus_num, addr, class_id, vendor_id, product_id, |
|
595 product_name, speed); |
|
596 return 0; |
|
597 } |
|
598 |
|
599 void usb_host_info(void) |
|
600 { |
|
601 usb_host_scan(NULL, usb_host_info_device); |
|
602 } |
|
603 |
|
604 /* XXX add this */ |
|
605 int usb_host_device_close(const char *devname) |
|
606 { |
|
607 return 0; |
|
608 } |