161 lines
4.9 KiB
C
161 lines
4.9 KiB
C
/*
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* Copyright (c) 2003, Adam Dunkels.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Adam Dunkels.
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* 4. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This file is part of the uIP TCP/IP stack.
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*
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* $Id: rtl8019as-drv.c,v 1.1 2006/06/17 22:41:21 adamdunkels Exp $
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*
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*/
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/* uip_main.c: initialization code and main event loop. */
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#define NULL (void *)0
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#include "uip.h"
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#include "uip_arp.h"
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#include "uip-signal.h"
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#include "loader.h"
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#include "rtl8019dev.h"
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#include "dispatcher.h"
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#include "ek.h"
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#include "debug.h"
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#define BUF ((struct uip_eth_hdr *)&uip_buf[0])
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static u8_t i, arptimer;
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static u16_t start, current;
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static void rtl8019_drv_idle(void);
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static DISPATCHER_SIGHANDLER(rtl8019_drv_sighandler, s, data);
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static struct dispatcher_proc p =
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{DISPATCHER_PROC("TCP/IP/RTL8019 driver", rtl8019_drv_idle,
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rtl8019_drv_sighandler, NULL)};
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ek_id_t id = EK_ID_NONE;
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/*-----------------------------------------------------------------------------------*/
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static void
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timer(void)
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{
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for(i = 0; i < UIP_CONNS; ++i) {
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uip_periodic(i);
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if(uip_len > 0) {
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uip_arp_out();
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rtl8019as_send();
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}
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}
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for(i = 0; i < UIP_UDP_CONNS; i++) {
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uip_udp_periodic(i);
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/* If the above function invocation resulted in data that
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should be sent out on the network, the global variable
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uip_len is set to a value > 0. */
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if(uip_len > 0) {
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uip_arp_out();
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rtl8019as_send();
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}
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}
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}
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/*-----------------------------------------------------------------------------------*/
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static void
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rtl8019_drv_idle(void)
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{
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/* Poll Ethernet device to see if there is a frame avaliable. */
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uip_len = rtl8019as_poll();
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if(uip_len > 0) {
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/* A frame was avaliable (and is now read into the uip_buf), so
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we process it. */
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if(BUF->type == htons(UIP_ETHTYPE_IP)) {
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/* debug_print16(uip_len);*/
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uip_arp_ipin();
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uip_len -= sizeof(struct uip_eth_hdr);
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uip_input();
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/* If the above function invocation resulted in data that
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should be sent out on the network, the global variable
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uip_len is set to a value > 0. */
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if(uip_len > 0) {
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/* debug_print(PSTR("Sending packet\n"));*/
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uip_arp_out();
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rtl8019as_send();
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}
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} else if(BUF->type == htons(UIP_ETHTYPE_ARP)) {
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uip_arp_arpin();
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/* If the above function invocation resulted in data that
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should be sent out on the network, the global variable
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uip_len is set to a value > 0. */
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if(uip_len > 0) {
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rtl8019as_send();
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}
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}
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}
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/* Check the clock so see if we should call the periodic uIP
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processing. */
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current = ek_clock();
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if((current - start) >= CLK_TCK/2 ||
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(current - start) < 0) {
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timer();
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start = current;
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}
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}
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/*-----------------------------------------------------------------------------------*/
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LOADER_INIT_FUNC(rtl8019_drv_init)
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{
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if(id == EK_ID_NONE) {
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id = dispatcher_start(&p);
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arptimer = 0;
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start = ek_clock();
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rtl8019as_init();
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dispatcher_listen(uip_signal_uninstall);
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}
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}
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/*-----------------------------------------------------------------------------------*/
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static
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DISPATCHER_SIGHANDLER(rtl8019_drv_sighandler, s, data)
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{
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DISPATCHER_SIGHANDLER_ARGS(s, data);
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if(s == uip_signal_uninstall) {
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dispatcher_exit(&p);
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id = EK_ID_NONE;
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LOADER_UNLOAD();
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}
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}
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/*-----------------------------------------------------------------------------------*/
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