| /* |
| * Copyright (c) 2001, Adam Dunkels. |
| * All rights reserved. |
| * |
| * 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. All advertising materials mentioning features or use of this software |
| * must display the following acknowledgement: |
| * This product includes software developed by Adam Dunkels. |
| * 4. The name of the author may not be used to endorse or promote |
| * products derived from this software without specific prior |
| * written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 THE AUTHOR 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. |
| * |
| * This file is part of the uIP TCP/IP stack. |
| * |
| * $Id: rrnet-drv.c,v 1.1 2003/07/30 22:40:36 adamdunkels Exp $ |
| * |
| */ |
| |
| #define NULL (void *)0 |
| |
| #include "uip.h" |
| #include "uip_arp.h" |
| #include "uip-signal.h" |
| #include "loader.h" |
| #include "cs8900a.h" |
| |
| #include "dispatcher.h" |
| #include "ek.h" |
| |
| #define BUF ((struct uip_eth_hdr *)&uip_buf[0]) |
| |
| static u8_t i, arptimer; |
| static u16_t start, current; |
| |
| static void rrnet_drv_idle(void); |
| static DISPATCHER_SIGHANDLER(rrnet_drv_sighandler, s, data); |
| static struct dispatcher_proc p = |
| {DISPATCHER_PROC("TCP/IP/RR-Net driver", rrnet_drv_idle, |
| rrnet_drv_sighandler, NULL)}; |
| static ek_id_t id; |
| |
| |
| |
| |
| /*-----------------------------------------------------------------------------------*/ |
| static void |
| timer(void) |
| { |
| for(i = 0; i < UIP_CONNS; ++i) { |
| uip_periodic(i); |
| if(uip_len > 0) { |
| uip_arp_out(); |
| cs8900a_send(); |
| } |
| } |
| |
| for(i = 0; i < UIP_UDP_CONNS; i++) { |
| uip_udp_periodic(i); |
| /* If the above function invocation resulted in data that |
| should be sent out on the network, the global variable |
| uip_len is set to a value > 0. */ |
| if(uip_len > 0) { |
| uip_arp_out(); |
| cs8900a_send(); |
| } |
| } |
| } |
| /*-----------------------------------------------------------------------------------*/ |
| static void |
| rrnet_drv_idle(void) |
| { |
| /* Poll Ethernet device to see if there is a frame avaliable. */ |
| uip_len = cs8900a_poll(); |
| if(uip_len > 0) { |
| /* A frame was avaliable (and is now read into the uip_buf), so |
| we process it. */ |
| if(BUF->type == htons(UIP_ETHTYPE_IP)) { |
| uip_arp_ipin(); |
| uip_len -= sizeof(struct uip_eth_hdr); |
| uip_input(); |
| /* If the above function invocation resulted in data that |
| should be sent out on the network, the global variable |
| uip_len is set to a value > 0. */ |
| if(uip_len > 0) { |
| uip_arp_out(); |
| cs8900a_send(); |
| } |
| } else if(BUF->type == htons(UIP_ETHTYPE_ARP)) { |
| uip_arp_arpin(); |
| /* If the above function invocation resulted in data that |
| should be sent out on the network, the global variable |
| uip_len is set to a value > 0. */ |
| if(uip_len > 0) { |
| cs8900a_send(); |
| } |
| } |
| } |
| /* Check the clock so see if we should call the periodic uIP |
| processing. */ |
| current = ek_clock(); |
| |
| if((current - start) >= CLK_TCK/2) { |
| timer(); |
| start = current; |
| } |
| } |
| /*-----------------------------------------------------------------------------------*/ |
| LOADER_INIT_FUNC(rrnet_drv_init) |
| { |
| if(id == EK_ID_NONE) { |
| id = dispatcher_start(&p); |
| |
| arptimer = 0; |
| start = ek_clock(); |
| |
| asm("lda #1"); |
| asm("ora $de01"); |
| asm("sta $de01"); |
| cs8900a_init(); |
| |
| dispatcher_listen(uip_signal_uninstall); |
| } |
| } |
| /*-----------------------------------------------------------------------------------*/ |
| static |
| DISPATCHER_SIGHANDLER(rrnet_drv_sighandler, s, data) |
| { |
| DISPATCHER_SIGHANDLER_ARGS(s, data); |
| |
| if(s == uip_signal_uninstall) { |
| dispatcher_exit(&p); |
| id = EK_ID_NONE; |
| LOADER_UNLOAD(); |
| } |
| } |
| /*-----------------------------------------------------------------------------------*/ |