Contiki 2.6

rtl8019-drv.c

00001 /*-----------------------------------------------------------------------------------*/
00002 /*
00003  * Copyright (c) 2001-2004, Adam Dunkels.
00004  * All rights reserved.
00005  *
00006  * Redistribution and use in source and binary forms, with or without
00007  * modification, are permitted provided that the following conditions
00008  * are met:
00009  * 1. Redistributions of source code must retain the above copyright
00010  *    notice, this list of conditions and the following disclaimer.
00011  * 2. Redistributions in binary form must reproduce the above copyright
00012  *    notice, this list of conditions and the following disclaimer in the
00013  *    documentation and/or other materials provided with the distribution.
00014  * 3. The name of the author may not be used to endorse or promote
00015  *    products derived from this software without specific prior
00016  *    written permission.
00017  *
00018  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
00019  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
00020  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00021  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
00022  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
00023  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
00024  * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
00025  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
00026  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
00027  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
00028  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00029  *
00030  * This file is part of the uIP TCP/IP stack.
00031  *
00032  * $Id: rtl8019-drv.c,v 1.3 2010/10/19 18:29:04 adamdunkels Exp $
00033  *
00034  */
00035 
00036 #include "contiki-net.h"
00037 #include "dev/rtl8019dev.h"
00038 #include "net/uip-neighbor.h"
00039 
00040 #define BUF ((struct uip_eth_hdr *)&uip_buf[0])
00041 
00042 PROCESS(rtl8019_process, "RTL8019 driver");
00043 
00044 /*---------------------------------------------------------------------------*/
00045 uint8_t
00046 rtl8019_output(void)
00047 {
00048   uip_arp_out();
00049   RTL8019dev_send();
00050 
00051   return 0;
00052 }
00053 /*---------------------------------------------------------------------------*/
00054 static void
00055 pollhandler(void)
00056 {
00057   process_poll(&rtl8019_process);
00058   uip_len = RTL8019dev_poll();
00059 
00060   if(uip_len > 0) {
00061 #if UIP_CONF_IPV6
00062     if(BUF->type == uip_htons(UIP_ETHTYPE_IPV6)) {
00063       uip_neighbor_add(&IPBUF->srcipaddr, &BUF->src);
00064       tcpip_input();
00065     } else
00066 #endif /* UIP_CONF_IPV6 */
00067     if(BUF->type == uip_htons(UIP_ETHTYPE_IP)) {
00068       uip_len -= sizeof(struct uip_eth_hdr);
00069       tcpip_input();
00070     } else if(BUF->type == uip_htons(UIP_ETHTYPE_ARP)) {
00071       uip_arp_arpin();
00072       /* If the above function invocation resulted in data that
00073          should be sent out on the network, the global variable
00074          uip_len is set to a value > 0. */
00075       if(uip_len > 0) {
00076         RTL8019dev_send();
00077       }
00078     }
00079   }
00080 }
00081 /*---------------------------------------------------------------------------*/
00082 PROCESS_THREAD(rtl8019_process, ev, data)
00083 {
00084   PROCESS_POLLHANDLER(pollhandler());
00085 
00086   PROCESS_BEGIN();
00087 
00088   RTL8019dev_init();
00089 
00090   tcpip_set_outputfunc(rtl8019_output);
00091 
00092   process_poll(&rtl8019_process);
00093   
00094   PROCESS_WAIT_UNTIL(ev == PROCESS_EVENT_EXIT);
00095 
00096   RTL8019dev_exit();
00097 
00098   PROCESS_END();
00099 }
00100 /*---------------------------------------------------------------------------*/