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#ifndef QEMU_HW_USB_DESC_H
#define QEMU_HW_USB_DESC_H
#include <wchar.h>
/* binary representation */
typedef struct USBDescriptor {
uint8_t bLength;
uint8_t bDescriptorType;
union {
struct {
uint8_t bcdUSB_lo;
uint8_t bcdUSB_hi;
uint8_t bDeviceClass;
uint8_t bDeviceSubClass;
uint8_t bDeviceProtocol;
uint8_t bMaxPacketSize0;
uint8_t idVendor_lo;
uint8_t idVendor_hi;
uint8_t idProduct_lo;
uint8_t idProduct_hi;
uint8_t bcdDevice_lo;
uint8_t bcdDevice_hi;
uint8_t iManufacturer;
uint8_t iProduct;
uint8_t iSerialNumber;
uint8_t bNumConfigurations;
} device;
struct {
uint8_t bcdUSB_lo;
uint8_t bcdUSB_hi;
uint8_t bDeviceClass;
uint8_t bDeviceSubClass;
uint8_t bDeviceProtocol;
uint8_t bMaxPacketSize0;
uint8_t bNumConfigurations;
uint8_t bReserved;
} device_qualifier;
struct {
uint8_t wTotalLength_lo;
uint8_t wTotalLength_hi;
uint8_t bNumInterfaces;
uint8_t bConfigurationValue;
uint8_t iConfiguration;
uint8_t bmAttributes;
uint8_t bMaxPower;
} config;
struct {
uint8_t bInterfaceNumber;
uint8_t bAlternateSetting;
uint8_t bNumEndpoints;
uint8_t bInterfaceClass;
uint8_t bInterfaceSubClass;
uint8_t bInterfaceProtocol;
uint8_t iInterface;
} interface;
struct {
uint8_t bEndpointAddress;
uint8_t bmAttributes;
uint8_t wMaxPacketSize_lo;
uint8_t wMaxPacketSize_hi;
uint8_t bInterval;
uint8_t bRefresh; /* only audio ep */
uint8_t bSynchAddress; /* only audio ep */
} endpoint;
struct {
uint8_t bMaxBurst;
uint8_t bmAttributes;
uint8_t wBytesPerInterval_lo;
uint8_t wBytesPerInterval_hi;
} super_endpoint;
struct {
uint8_t wTotalLength_lo;
uint8_t wTotalLength_hi;
uint8_t bNumDeviceCaps;
} bos;
struct {
uint8_t bDevCapabilityType;
union {
struct {
uint8_t bmAttributes_1;
uint8_t bmAttributes_2;
uint8_t bmAttributes_3;
uint8_t bmAttributes_4;
} usb2_ext;
struct {
uint8_t bmAttributes;
uint8_t wSpeedsSupported_lo;
uint8_t wSpeedsSupported_hi;
uint8_t bFunctionalitySupport;
uint8_t bU1DevExitLat;
uint8_t wU2DevExitLat_lo;
uint8_t wU2DevExitLat_hi;
} super;
} u;
} cap;
} u;
} QEMU_PACKED USBDescriptor;
struct USBDescID {
uint16_t idVendor;
uint16_t idProduct;
uint16_t bcdDevice;
uint8_t iManufacturer;
uint8_t iProduct;
uint8_t iSerialNumber;
};
struct USBDescDevice {
uint16_t bcdUSB;
uint8_t bDeviceClass;
uint8_t bDeviceSubClass;
uint8_t bDeviceProtocol;
uint8_t bMaxPacketSize0;
uint8_t bNumConfigurations;
const USBDescConfig *confs;
};
struct USBDescConfig {
uint8_t bNumInterfaces;
uint8_t bConfigurationValue;
uint8_t iConfiguration;
uint8_t bmAttributes;
uint8_t bMaxPower;
/* grouped interfaces */
uint8_t nif_groups;
const USBDescIfaceAssoc *if_groups;
/* "normal" interfaces */
uint8_t nif;
const USBDescIface *ifs;
};
/* conceptually an Interface Association Descriptor, and related interfaces */
struct USBDescIfaceAssoc {
uint8_t bFirstInterface;
uint8_t bInterfaceCount;
uint8_t bFunctionClass;
uint8_t bFunctionSubClass;
uint8_t bFunctionProtocol;
uint8_t iFunction;
uint8_t nif;
const USBDescIface *ifs;
};
struct USBDescIface {
uint8_t bInterfaceNumber;
uint8_t bAlternateSetting;
uint8_t bNumEndpoints;
uint8_t bInterfaceClass;
uint8_t bInterfaceSubClass;
uint8_t bInterfaceProtocol;
uint8_t iInterface;
uint8_t ndesc;
USBDescOther *descs;
USBDescEndpoint *eps;
};
struct USBDescEndpoint {
uint8_t bEndpointAddress;
uint8_t bmAttributes;
uint16_t wMaxPacketSize;
uint8_t bInterval;
uint8_t bRefresh;
uint8_t bSynchAddress;
uint8_t is_audio; /* has bRefresh + bSynchAddress */
uint8_t *extra;
/* superspeed endpoint companion */
uint8_t bMaxBurst;
uint8_t bmAttributes_super;
uint16_t wBytesPerInterval;
};
struct USBDescOther {
uint8_t length;
const uint8_t *data;
};
struct USBDescMSOS {
const char *CompatibleID;
const wchar_t *Label;
bool SelectiveSuspendEnabled;
};
typedef const char *USBDescStrings[256];
struct USBDesc {
USBDescID id;
const USBDescDevice *full;
const USBDescDevice *high;
const USBDescDevice *super;
const char* const *str;
const USBDescMSOS *msos;
};
#define USB_DESC_MAX_LEN 8192
#define USB_DESC_FLAG_SUPER (1 << 1)
/* little helpers */
static inline uint8_t usb_lo(uint16_t val)
{
return val & 0xff;
}
static inline uint8_t usb_hi(uint16_t val)
{
return (val >> 8) & 0xff;
}
/* generate usb packages from structs */
int usb_desc_device(const USBDescID *id, const USBDescDevice *dev,
bool msos, uint8_t *dest, size_t len);
int usb_desc_device_qualifier(const USBDescDevice *dev,
uint8_t *dest, size_t len);
int usb_desc_config(const USBDescConfig *conf, int flags,
uint8_t *dest, size_t len);
int usb_desc_iface_group(const USBDescIfaceAssoc *iad, int flags,
uint8_t *dest, size_t len);
int usb_desc_iface(const USBDescIface *iface, int flags,
uint8_t *dest, size_t len);
int usb_desc_endpoint(const USBDescEndpoint *ep, int flags,
uint8_t *dest, size_t len);
int usb_desc_other(const USBDescOther *desc, uint8_t *dest, size_t len);
int usb_desc_msos(const USBDesc *desc, USBPacket *p,
int index, uint8_t *dest, size_t len);
/* control message emulation helpers */
void usb_desc_init(USBDevice *dev);
void usb_desc_attach(USBDevice *dev);
void usb_desc_set_string(USBDevice *dev, uint8_t index, const char *str);
void usb_desc_create_serial(USBDevice *dev);
const char *usb_desc_get_string(USBDevice *dev, uint8_t index);
int usb_desc_string(USBDevice *dev, int index, uint8_t *dest, size_t len);
int usb_desc_get_descriptor(USBDevice *dev, USBPacket *p,
int value, uint8_t *dest, size_t len);
int usb_desc_handle_control(USBDevice *dev, USBPacket *p,
int request, int value, int index, int length, uint8_t *data);
#endif /* QEMU_HW_USB_DESC_H */
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