嵌入式系统设计与实例开发源码

				/*				 * Copyright (C) 2001 Extenex Corporation				 *				 * usb-char.h				 *				 * Character device emulation client for SA-1100 client usb core.				 *				 *				 *				 */				#ifndef _USB_CHAR_H				#define _USB_CHAR_H								#define USBC_MAJOR 10      /* miscellaneous character device */				#define USBC_MINOR 240     /* in the "reserved for local use" range */								#define USBC_MAGIC 0x8E								/* zap everything in receive ring buffer */				#define USBC_IOC_FLUSH_RECEIVER    _IO( USBC_MAGIC, 0x01 )								/* reset transmitter */				#define USBC_IOC_FLUSH_TRANSMITTER _IO( USBC_MAGIC, 0x02 )								/* do both of above */				#define USBC_IOC_FLUSH_ALL         _IO( USBC_MAGIC, 0x03 )																												#endif /* _USB_CHAR_H */