unix_devs.h

含有完整TCP/IP PPP协议的嵌入式操作系统

#ifndef _DEV_UNIX_DEVS_H_
#define _DEV_UNIX_DEVS_H_


/*
 * Copyright (C) 2000-2004 by ETH Zurich
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the copyright holders nor the names of
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY ETH ZURICH AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ETH ZURICH
 *  OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * For additional information see http://www.ethernut.de/
 *
 */

/* unix_devs.h - a nut/os device driver for native unix devices
 *
 * 2004.04.01 Matthias Ringwald <[e-mail]>
 *
 */

/*
 * $Log: unix_devs.h,v $
 * Revision 1.8  2005/08/02 17:46:48  haraldkipp
 * Major API documentation update.
 *
 * Revision 1.7  2005/04/04 19:35:06  freckle
 * added socket redirection feature for unix emulation uarts. Every nut/os
 * uart device can now be mapped to a TCP/IP socket using the
 * "-u{0/1/2} hostname:port" command line option
 *
 * Revision 1.6  2004/08/09 21:31:30  freckle
 * Added include/dev/unix_devs.h changes
 *
 * Revision 1.5  2004/08/05 12:13:56  freckle
 * Added unix emulation hook in NutThreadYield to safely process
 * NutPostEventAsync calls occuring in non Nut/OS threads.
 * Rewrote the unix read function again using the new unix NutThreadYield hook
 * to call the NutPostEventAsync function safely (fast & correct).
 * _write(nf, 0, 0) aka fflush is ignored on unix emulation.
 *
 * Revision 1.4  2004/06/22 09:00:00  freckle
 * Further work on unix_dev emulation. Multiple parallel reads don't block
 * each other. Still, dead-locks occure.
 * STDIO is set to non-blocking.
 *
 * Revision 1.3  2004/06/21 10:57:25  freckle
 * dev/unix_devs.c: read operation is using extra pthread to only block the
 * current thread instead of all threads
 *
 * Revision 1.2  2004/04/16 17:50:35  freckle
 * Implemented the most common _IOCTL calls
 * Added block read functionality to read call
 *
 * Revision 1.1  2004/04/07 12:13:57  haraldkipp
 * Matthias Ringwald's *nix emulation added
 *
 */

#include <pthread.h>
#include <sys/device.h>
#include <dev/netbuf.h>

#ifdef __cplusplus
extern "C" {
#endif

/*!
 * \addtogroup xgNutArchUnix
 */
/*@{*/

// int UnixDevIOCTL(NUTDEVICE * dev, int req, void *conf);

/*
 * Available devices.
 */
    extern NUTDEVICE devUart0;
    extern NUTDEVICE devUart1;
    extern NUTDEVICE devUart2;
    extern NUTDEVICE devUsartAvr0;
    extern NUTDEVICE devUsartAvr1;
    extern NUTDEVICE devUsartAvr2;
    extern NUTDEVICE devDebug0;
    extern NUTDEVICE devDebug1;
    extern NUTDEVICE devDebug2;

/*!
 * \struct _UNIXDCB unix_d  evs.h dev/unix_devs.h
 * \brief UNIX devices low level information structure.
 *
 */
struct _UNIXDCB {

    /*! \brief Mode flags.
     */
    u_long dcb_modeflags;

    /*! \brief Status flags.
     */
    u_long dcb_statusflags;

    /*! \brief Read timeout.
     */
    u_long dcb_rtimeout;

    /*! \brief Write timeout.
     */
    u_long dcb_wtimeout;

    /*! \brief Last EOL character.
     */
    u_char dcb_last_eol;

    /*! \brief Native file descriptor
    */
    int dcb_fd;
    
	/*! \brief File is Socket 
	*/
	u_char dcb_socket;

    /*! \brief Queue of threads waiting for a character in the input buffer.
     */
    HANDLE dcb_rx_rdy;
    
    /*! \brief Mutex to protect rx trigger 
    */
    pthread_mutex_t dcb_rx_mutex;

    /*! \brief Conditional Variable to trigger read thread 
    */
    pthread_cond_t dcb_rx_trigger;

};

/*!
 * USART device low level information type.
 */
    typedef struct _UNIXDCB UNIXDCB;

/*@}*/



#ifdef __cplusplus
}
#endif
#endif