kthacker | 62e146c | 2006-04-17 15:11:35 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2001-2004, Adam Dunkels. |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * 1. Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer in the |
| 12 | * documentation and/or other materials provided with the distribution. |
| 13 | * 3. The name of the author may not be used to endorse or promote |
| 14 | * products derived from this software without specific prior |
| 15 | * written permission. |
| 16 | * |
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS |
| 18 | * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| 19 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
| 21 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE |
| 23 | * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 24 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| 25 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| 26 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 27 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 28 | * |
| 29 | * This file is part of the uIP TCP/IP stack. |
| 30 | * |
| 31 | * $Id: tfe-drv.c,v 1.1 2006/04/17 15:12:02 kthacker Exp $ |
| 32 | * |
| 33 | */ |
| 34 | |
| 35 | #include "packet-service.h" |
| 36 | |
| 37 | #include "cs8900a.h" |
| 38 | |
| 39 | #include "uip_arp.h" |
| 40 | |
| 41 | static void output(u8_t *hdr, u16_t hdrlen, u8_t *data, u16_t datalen); |
| 42 | |
| 43 | static const struct uip_eth_addr addr = |
| 44 | {{0x00,0x0d,0x60,0x64,0x64,0x64}}; |
| 45 | |
| 46 | static const struct packet_service_state state = |
| 47 | { |
| 48 | PACKET_SERVICE_VERSION, |
| 49 | output |
| 50 | }; |
| 51 | |
| 52 | EK_EVENTHANDLER(eventhandler, ev, data); |
| 53 | EK_POLLHANDLER(pollhandler); |
| 54 | EK_PROCESS(proc, PACKET_SERVICE_NAME ": TFE", EK_PRIO_NORMAL, |
| 55 | eventhandler, pollhandler, (void *)&state); |
| 56 | |
| 57 | /*---------------------------------------------------------------------------*/ |
| 58 | LOADER_INIT_FUNC(tfe_drv_init, arg) |
| 59 | { |
| 60 | arg_free(arg); |
| 61 | ek_service_start(PACKET_SERVICE_NAME, &proc); |
| 62 | } |
| 63 | /*---------------------------------------------------------------------------*/ |
| 64 | static void |
| 65 | output(u8_t *hdr, u16_t hdrlen, u8_t *data, u16_t datalen) |
| 66 | { |
| 67 | uip_arp_out(); |
| 68 | cs8900a_send(); |
| 69 | } |
| 70 | /*---------------------------------------------------------------------------*/ |
| 71 | EK_EVENTHANDLER(eventhandler, ev, data) |
| 72 | { |
| 73 | switch(ev) { |
| 74 | case EK_EVENT_INIT: |
| 75 | case EK_EVENT_REPLACE: |
| 76 | uip_setethaddr(addr); |
| 77 | cs8900a_init(); |
| 78 | break; |
| 79 | case EK_EVENT_REQUEST_REPLACE: |
| 80 | ek_replace((struct ek_proc *)data, NULL); |
| 81 | LOADER_UNLOAD(); |
| 82 | break; |
| 83 | case EK_EVENT_REQUEST_EXIT: |
| 84 | ek_exit(); |
| 85 | LOADER_UNLOAD(); |
| 86 | break; |
| 87 | default: |
| 88 | break; |
| 89 | } |
| 90 | } |
| 91 | /*---------------------------------------------------------------------------*/ |
| 92 | EK_POLLHANDLER(pollhandler) |
| 93 | { |
| 94 | #define BUF ((struct uip_eth_hdr *)&uip_buf[0]) |
| 95 | |
| 96 | /* Poll Ethernet device to see if there is a frame avaliable. */ |
| 97 | uip_len = cs8900a_poll(); |
| 98 | if(uip_len > 0) { |
| 99 | /* A frame was avaliable (and is now read into the uip_buf), so |
| 100 | we process it. */ |
| 101 | if(BUF->type == HTONS(UIP_ETHTYPE_IP)) { |
| 102 | uip_arp_ipin(); |
| 103 | uip_len -= sizeof(struct uip_eth_hdr); |
| 104 | tcpip_input(); |
| 105 | } else if(BUF->type == HTONS(UIP_ETHTYPE_ARP)) { |
| 106 | uip_arp_arpin(); |
| 107 | /* If the above function invocation resulted in data that |
| 108 | should be sent out on the network, the global variable |
| 109 | uip_len is set to a value > 0. */ |
| 110 | if(uip_len > 0) { |
| 111 | cs8900a_send(); |
| 112 | } |
| 113 | } |
| 114 | } |
| 115 | |
| 116 | } |
| 117 | /*---------------------------------------------------------------------------*/ |