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 } u; 67 } QEMU_PACKED USBDescriptor; 68 69 struct USBDescID { 70 uint16_t idVendor; 71 uint16_t idProduct; 72 uint16_t bcdDevice; 73 uint8_t iManufacturer; 74 uint8_t iProduct; 75 uint8_t iSerialNumber; 76 }; 77 78 struct USBDescDevice { 79 uint16_t bcdUSB; 80 uint8_t bDeviceClass; 81 uint8_t bDeviceSubClass; 82 uint8_t bDeviceProtocol; 83 uint8_t bMaxPacketSize0; 84 uint8_t bNumConfigurations; 85 86 const USBDescConfig *confs; 87 }; 88 89 struct USBDescConfig { 90 uint8_t bNumInterfaces; 91 uint8_t bConfigurationValue; 92 uint8_t iConfiguration; 93 uint8_t bmAttributes; 94 uint8_t bMaxPower; 95 96 /* grouped interfaces */ 97 uint8_t nif_groups; 98 const USBDescIfaceAssoc *if_groups; 99 100 /* "normal" interfaces */ 101 uint8_t nif; 102 const USBDescIface *ifs; 103 }; 104 105 /* conceptually an Interface Association Descriptor, and releated interfaces */ 106 struct USBDescIfaceAssoc { 107 uint8_t bFirstInterface; 108 uint8_t bInterfaceCount; 109 uint8_t bFunctionClass; 110 uint8_t bFunctionSubClass; 111 uint8_t bFunctionProtocol; 112 uint8_t iFunction; 113 114 uint8_t nif; 115 const USBDescIface *ifs; 116 }; 117 118 struct USBDescIface { 119 uint8_t bInterfaceNumber; 120 uint8_t bAlternateSetting; 121 uint8_t bNumEndpoints; 122 uint8_t bInterfaceClass; 123 uint8_t bInterfaceSubClass; 124 uint8_t bInterfaceProtocol; 125 uint8_t iInterface; 126 127 uint8_t ndesc; 128 USBDescOther *descs; 129 USBDescEndpoint *eps; 130 }; 131 132 struct USBDescEndpoint { 133 uint8_t bEndpointAddress; 134 uint8_t bmAttributes; 135 uint16_t wMaxPacketSize; 136 uint8_t bInterval; 137 uint8_t bRefresh; 138 uint8_t bSynchAddress; 139 140 uint8_t is_audio; /* has bRefresh + bSynchAddress */ 141 uint8_t *extra; 142 }; 143 144 struct USBDescOther { 145 uint8_t length; 146 const uint8_t *data; 147 }; 148 149 typedef const char *USBDescStrings[256]; 150 151 struct USBDesc { 152 USBDescID id; 153 const USBDescDevice *full; 154 const USBDescDevice *high; 155 const char* const *str; 156 }; 157 158 /* generate usb packages from structs */ 159 int usb_desc_device(const USBDescID *id, const USBDescDevice *dev, 160 uint8_t *dest, size_t len); 161 int usb_desc_device_qualifier(const USBDescDevice *dev, 162 uint8_t *dest, size_t len); 163 int usb_desc_config(const USBDescConfig *conf, uint8_t *dest, size_t len); 164 int usb_desc_iface_group(const USBDescIfaceAssoc *iad, uint8_t *dest, 165 size_t len); 166 int usb_desc_iface(const USBDescIface *iface, uint8_t *dest, size_t len); 167 int usb_desc_endpoint(const USBDescEndpoint *ep, uint8_t *dest, size_t len); 168 int usb_desc_other(const USBDescOther *desc, uint8_t *dest, size_t len); 169 170 /* control message emulation helpers */ 171 void usb_desc_init(USBDevice *dev); 172 void usb_desc_attach(USBDevice *dev); 173 void usb_desc_set_string(USBDevice *dev, uint8_t index, const char *str); 174 void usb_desc_create_serial(USBDevice *dev); 175 const char *usb_desc_get_string(USBDevice *dev, uint8_t index); 176 int usb_desc_string(USBDevice *dev, int index, uint8_t *dest, size_t len); 177 int usb_desc_get_descriptor(USBDevice *dev, int value, uint8_t *dest, size_t len); 178 int usb_desc_handle_control(USBDevice *dev, USBPacket *p, 179 int request, int value, int index, int length, uint8_t *data); 180 181 #endif /* QEMU_HW_USB_DESC_H */ 182