diff options
Diffstat (limited to 'qemu/roms/ipxe/src/include/ipxe/cdc.h')
-rw-r--r-- | qemu/roms/ipxe/src/include/ipxe/cdc.h | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/qemu/roms/ipxe/src/include/ipxe/cdc.h b/qemu/roms/ipxe/src/include/ipxe/cdc.h new file mode 100644 index 000000000..f1799cd9a --- /dev/null +++ b/qemu/roms/ipxe/src/include/ipxe/cdc.h @@ -0,0 +1,55 @@ +#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 */ |