| /* |
| * Copyright (c) 2001-2004, 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. 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: tfe-drv.c,v 1.15 2005/01/26 23:56:10 oliverschmidt Exp $ |
| * |
| */ |
| |
| #include "packet-service.h" |
| |
| #include "cs8900a.h" |
| |
| #include "uip_arp.h" |
| |
| static void output(u8_t *hdr, u16_t hdrlen, u8_t *data, u16_t datalen); |
| |
| /* 00:0E:3A is the OUI of Cirrus Logic, 64:64:64 just means C64 */ |
| static const struct uip_eth_addr addr = |
| {{0x00,0x0e,0x3a,0x64,0x64,0x64}}; |
| |
| static const struct packet_service_state state = |
| { |
| PACKET_SERVICE_VERSION, |
| output |
| }; |
| |
| EK_EVENTHANDLER(eventhandler, ev, data); |
| EK_POLLHANDLER(pollhandler); |
| EK_PROCESS(proc, PACKET_SERVICE_NAME ": TFE", EK_PRIO_NORMAL, |
| eventhandler, pollhandler, (void *)&state); |
| |
| /*---------------------------------------------------------------------------*/ |
| LOADER_INIT_FUNC(tfe_drv_init, arg) |
| { |
| arg_free(arg); |
| ek_service_start(PACKET_SERVICE_NAME, &proc); |
| } |
| /*---------------------------------------------------------------------------*/ |
| static void |
| output(u8_t *hdr, u16_t hdrlen, u8_t *data, u16_t datalen) |
| { |
| uip_arp_out(); |
| cs8900a_send(); |
| } |
| /*---------------------------------------------------------------------------*/ |
| EK_EVENTHANDLER(eventhandler, ev, data) |
| { |
| switch(ev) { |
| case EK_EVENT_INIT: |
| case EK_EVENT_REPLACE: |
| uip_setethaddr(addr); |
| cs8900a_init(); |
| break; |
| case EK_EVENT_REQUEST_REPLACE: |
| ek_replace((struct ek_proc *)data, NULL); |
| LOADER_UNLOAD(); |
| break; |
| case EK_EVENT_REQUEST_EXIT: |
| ek_exit(); |
| LOADER_UNLOAD(); |
| break; |
| default: |
| break; |
| } |
| } |
| /*---------------------------------------------------------------------------*/ |
| EK_POLLHANDLER(pollhandler) |
| { |
| #define BUF ((struct uip_eth_hdr *)&uip_buf[0]) |
| |
| /* 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); |
| tcpip_input(); |
| } 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(); |
| } |
| } |
| } |
| |
| } |
| /*---------------------------------------------------------------------------*/ |