1 #ifndef QEMU_HW_USB_DESC_H 2 #define QEMU_HW_USB_DESC_H 3 4 #include <inttypes.h> 5 6 /* binary representation */ 7 typedef struct USBDescriptor { 8 uint8_t bLength; 9 uint8_t bDescriptorType; 10 union { 11 struct { 12 uint8_t bcdUSB_lo; 13 uint8_t bcdUSB_hi; 14 uint8_t bDeviceClass; 15 uint8_t bDeviceSubClass; 16 uint8_t bDeviceProtocol; 17 uint8_t bMaxPacketSize0; 18 uint8_t idVendor_lo; 19 uint8_t idVendor_hi; 20 uint8_t idProduct_lo; 21 uint8_t idProduct_hi; 22 uint8_t bcdDevice_lo; 23 uint8_t bcdDevice_hi; 24 uint8_t iManufacturer; 25 uint8_t iProduct; 26 uint8_t iSerialNumber; 27 uint8_t bNumConfigurations; 28 } device; 29 struct { 30 uint8_t bcdUSB_lo; 31 uint8_t bcdUSB_hi; 32 uint8_t bDeviceClass; 33 uint8_t bDeviceSubClass; 34 uint8_t bDeviceProtocol; 35 uint8_t bMaxPacketSize0; 36 uint8_t bNumConfigurations; 37 uint8_t bReserved; 38 } device_qualifier; 39 struct { 40 uint8_t wTotalLength_lo; 41 uint8_t wTotalLength_hi; 42 uint8_t bNumInterfaces; 43 uint8_t bConfigurationValue; 44 uint8_t iConfiguration; 45 uint8_t bmAttributes; 46 uint8_t bMaxPower; 47 } config; 48 struct { 49 uint8_t bInterfaceNumber; 50 uint8_t bAlternateSetting; 51 uint8_t bNumEndpoints; 52 uint8_t bInterfaceClass; 53 uint8_t bInterfaceSubClass; 54 uint8_t bInterfaceProtocol; 55 uint8_t iInterface; 56 } interface; 57 struct { 58 uint8_t bEndpointAddress; 59 uint8_t bmAttributes; 60 uint8_t wMaxPacketSize_lo; 61 uint8_t wMaxPacketSize_hi; 62 uint8_t bInterval; 63 uint8_t bRefresh; /* only audio ep */ 64 uint8_t bSynchAddress; /* only audio ep */ 65 } endpoint; 66 struct { 67 uint8_t bMaxBurst; 68 uint8_t bmAttributes; 69 uint8_t wBytesPerInterval_lo; 70 uint8_t wBytesPerInterval_hi; 71 } super_endpoint; 72 struct { 73 uint8_t wTotalLength_lo; 74 uint8_t wTotalLength_hi; 75 uint8_t bNumDeviceCaps; 76 } bos; 77 struct { 78 uint8_t bDevCapabilityType; 79 union { 80 struct { 81 uint8_t bmAttributes_1; 82 uint8_t bmAttributes_2; 83 uint8_t bmAttributes_3; 84 uint8_t bmAttributes_4; 85 } usb2_ext; 86 struct { 87 uint8_t bmAttributes; 88 uint8_t wSpeedsSupported_lo; 89 uint8_t wSpeedsSupported_hi; 90 uint8_t bFunctionalitySupport; 91 uint8_t bU1DevExitLat; 92 uint8_t wU2DevExitLat_lo; 93 uint8_t wU2DevExitLat_hi; 94 } super; 95 } u; 96 } cap; 97 } u; 98 } QEMU_PACKED USBDescriptor; 99 100 struct USBDescID { 101 uint16_t idVendor; 102 uint16_t idProduct; 103 uint16_t bcdDevice; 104 uint8_t iManufacturer; 105 uint8_t iProduct; 106 uint8_t iSerialNumber; 107 }; 108 109 struct USBDescDevice { 110 uint16_t bcdUSB; 111 uint8_t bDeviceClass; 112 uint8_t bDeviceSubClass; 113 uint8_t bDeviceProtocol; 114 uint8_t bMaxPacketSize0; 115 uint8_t bNumConfigurations; 116 117 const USBDescConfig *confs; 118 }; 119 120 struct USBDescConfig { 121 uint8_t bNumInterfaces; 122 uint8_t bConfigurationValue; 123 uint8_t iConfiguration; 124 uint8_t bmAttributes; 125 uint8_t bMaxPower; 126 127 /* grouped interfaces */ 128 uint8_t nif_groups; 129 const USBDescIfaceAssoc *if_groups; 130 131 /* "normal" interfaces */ 132 uint8_t nif; 133 const USBDescIface *ifs; 134 }; 135 136 /* conceptually an Interface Association Descriptor, and releated interfaces */ 137 struct USBDescIfaceAssoc { 138 uint8_t bFirstInterface; 139 uint8_t bInterfaceCount; 140 uint8_t bFunctionClass; 141 uint8_t bFunctionSubClass; 142 uint8_t bFunctionProtocol; 143 uint8_t iFunction; 144 145 uint8_t nif; 146 const USBDescIface *ifs; 147 }; 148 149 struct USBDescIface { 150 uint8_t bInterfaceNumber; 151 uint8_t bAlternateSetting; 152 uint8_t bNumEndpoints; 153 uint8_t bInterfaceClass; 154 uint8_t bInterfaceSubClass; 155 uint8_t bInterfaceProtocol; 156 uint8_t iInterface; 157 158 uint8_t ndesc; 159 USBDescOther *descs; 160 USBDescEndpoint *eps; 161 }; 162 163 struct USBDescEndpoint { 164 uint8_t bEndpointAddress; 165 uint8_t bmAttributes; 166 uint16_t wMaxPacketSize; 167 uint8_t bInterval; 168 uint8_t bRefresh; 169 uint8_t bSynchAddress; 170 171 uint8_t is_audio; /* has bRefresh + bSynchAddress */ 172 uint8_t *extra; 173 174 /* superspeed endpoint companion */ 175 uint8_t bMaxBurst; 176 uint8_t bmAttributes_super; 177 uint16_t wBytesPerInterval; 178 }; 179 180 struct USBDescOther { 181 uint8_t length; 182 const uint8_t *data; 183 }; 184 185 typedef const char *USBDescStrings[256]; 186 187 struct USBDesc { 188 USBDescID id; 189 const USBDescDevice *full; 190 const USBDescDevice *high; 191 const USBDescDevice *super; 192 const char* const *str; 193 }; 194 195 #define USB_DESC_FLAG_SUPER (1 << 1) 196 197 /* little helpers */ 198 static inline uint8_t usb_lo(uint16_t val) 199 { 200 return val & 0xff; 201 } 202 203 static inline uint8_t usb_hi(uint16_t val) 204 { 205 return (val >> 8) & 0xff; 206 } 207 208 /* generate usb packages from structs */ 209 int usb_desc_device(const USBDescID *id, const USBDescDevice *dev, 210 uint8_t *dest, size_t len); 211 int usb_desc_device_qualifier(const USBDescDevice *dev, 212 uint8_t *dest, size_t len); 213 int usb_desc_config(const USBDescConfig *conf, int flags, 214 uint8_t *dest, size_t len); 215 int usb_desc_iface_group(const USBDescIfaceAssoc *iad, int flags, 216 uint8_t *dest, size_t len); 217 int usb_desc_iface(const USBDescIface *iface, int flags, 218 uint8_t *dest, size_t len); 219 int usb_desc_endpoint(const USBDescEndpoint *ep, int flags, 220 uint8_t *dest, size_t len); 221 int usb_desc_other(const USBDescOther *desc, uint8_t *dest, size_t len); 222 223 /* control message emulation helpers */ 224 void usb_desc_init(USBDevice *dev); 225 void usb_desc_attach(USBDevice *dev); 226 void usb_desc_set_string(USBDevice *dev, uint8_t index, const char *str); 227 void usb_desc_create_serial(USBDevice *dev); 228 const char *usb_desc_get_string(USBDevice *dev, uint8_t index); 229 int usb_desc_string(USBDevice *dev, int index, uint8_t *dest, size_t len); 230 int usb_desc_get_descriptor(USBDevice *dev, USBPacket *p, 231 int value, uint8_t *dest, size_t len); 232 int usb_desc_handle_control(USBDevice *dev, USBPacket *p, 233 int request, int value, int index, int length, uint8_t *data); 234 235 #endif /* QEMU_HW_USB_DESC_H */ 236