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#ifndef _IPXE_CDC_H
#define _IPXE_CDC_H
/** @file
*
* USB Communications Device Class (CDC)
*
*/
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
#include <ipxe/usb.h>
/** Class code for communications devices */
#define USB_CLASS_CDC 2
/** Union functional descriptor */
struct cdc_union_descriptor {
/** Descriptor header */
struct usb_descriptor_header header;
/** Descriptor subtype */
uint8_t subtype;
/** Interfaces (variable-length) */
uint8_t interface[1];
} __attribute__ (( packed ));
/** Union functional descriptor subtype */
#define CDC_SUBTYPE_UNION 6
/** Ethernet descriptor subtype */
#define CDC_SUBTYPE_ETHERNET 15
/** Network connection notification */
#define CDC_NETWORK_CONNECTION \
( USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE | \
USB_REQUEST_TYPE ( 0x00 ) )
/** Connection speed change notification */
#define CDC_CONNECTION_SPEED_CHANGE \
( USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE | \
USB_REQUEST_TYPE ( 0x2a ) )
/** Connection speed change notification */
struct cdc_connection_speed_change {
/** Downlink bit rate, in bits per second */
uint32_t down;
/** Uplink bit rate, in bits per second */
uint32_t up;
} __attribute__ (( packed ));
extern struct cdc_union_descriptor *
cdc_union_descriptor ( struct usb_configuration_descriptor *config,
struct usb_interface_descriptor *interface );
#endif /* _IPXE_CDC_H */
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