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| Rev | Author | Line No. | Line |
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| 2 | pj | 1 | /* |
| 2 | * Project: S.Ha.R.K. |
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| 3 | * |
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| 4 | * Coordinators: |
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| 5 | * Giorgio Buttazzo <giorgio@sssup.it> |
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| 6 | * Paolo Gai <pj@gandalf.sssup.it> |
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| 7 | * |
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| 8 | * Authors : |
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| 9 | * Paolo Gai <pj@gandalf.sssup.it> |
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| 10 | * Massimiliano Giorgi <massy@gandalf.sssup.it> |
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| 11 | * Luca Abeni <luca@gandalf.sssup.it> |
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| 12 | * (see the web pages for full authors list) |
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| 13 | * |
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| 14 | * ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy) |
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| 15 | * |
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| 16 | * http://www.sssup.it |
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| 17 | * http://retis.sssup.it |
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| 18 | * http://shark.sssup.it |
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| 19 | */ |
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| 20 | |||
| 21 | /** |
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| 22 | ------------ |
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| 205 | pj | 23 | CVS : $Id: eth.c,v 1.4 2003-07-10 07:52:04 pj Exp $ |
| 2 | pj | 24 | |
| 25 | File: $File$ |
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| 205 | pj | 26 | Revision: $Revision: 1.4 $ |
| 27 | Last update: $Date: 2003-07-10 07:52:04 $ |
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| 2 | pj | 28 | ------------ |
| 29 | **/ |
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| 30 | |||
| 31 | /* |
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| 32 | * Copyright (C) 2000 Luca Abeni |
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| 33 | * |
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| 34 | * This program is free software; you can redistribute it and/or modify |
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| 35 | * it under the terms of the GNU General Public License as published by |
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| 36 | * the Free Software Foundation; either version 2 of the License, or |
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| 37 | * (at your option) any later version. |
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| 38 | * |
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| 39 | * This program is distributed in the hope that it will be useful, |
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| 40 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 41 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 42 | * GNU General Public License for more details. |
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| 43 | * |
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| 44 | * You should have received a copy of the GNU General Public License |
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| 45 | * along with this program; if not, write to the Free Software |
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| 46 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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| 47 | * |
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| 48 | */ |
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| 49 | |||
| 50 | |||
| 51 | /* Author: Luca Abeni */ |
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| 52 | /* Date: 2/12/1997 */ |
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| 53 | |||
| 54 | /* File: eth.C */ |
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| 55 | /* Revision: 2.0 */ |
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| 56 | |||
| 57 | /* |
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| 58 | Ethernet layer: it is an inetrface between the low level driver ( |
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| 59 | 3Com 3c59xx, ...) and the high level protocols (IP, ARP,...). |
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| 60 | */ |
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| 61 | |||
| 62 | /* only 4 debug... */ |
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| 63 | int netlev; |
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| 64 | |||
| 65 | #include <kernel/kern.h> |
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| 66 | #include <modules/hartport.h> |
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| 67 | |||
| 68 | #include <drivers/pci.h> |
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| 69 | |||
| 70 | #include "eth_priv.h" |
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| 71 | #include "netbuff.h" |
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| 72 | |||
| 73 | #include <linux/netdevice.h> |
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| 74 | /*#include "lowlev.h" |
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| 75 | //#include "3com.h" */ |
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| 76 | |||
| 17 | pj | 77 | //#define DEBUG_ETH |
| 78 | |||
| 2 | pj | 79 | #define ETH_PAGE 5 |
| 80 | |||
| 81 | struct eth_service{ |
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| 82 | WORD type; |
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| 83 | void (*rfun)(void *pkt); |
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| 84 | } ETH_SERVICE; |
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| 85 | |||
| 86 | int definedprotocols; |
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| 87 | struct eth_service eth_table[ETH_MAX_PROTOCOLS]; |
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| 88 | |||
| 89 | #define ETH_RX_BUFFERS 4 |
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| 90 | #define ETH_TX_BUFFERS 4 |
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| 91 | |||
| 92 | #ifndef ETH0_ADDR |
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| 93 | # define ETH0_ADDR 0 |
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| 94 | #endif |
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| 95 | #ifndef ETH0_IRQ |
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| 96 | # define ETH0_IRQ 0 |
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| 97 | #endif |
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| 98 | |||
| 99 | #define NONE 0 |
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| 100 | |||
| 101 | /*extern void net_handler(void); |
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| 102 | //extern PID net_extern_driver(void);*/ |
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| 103 | |||
| 104 | PID nettask_pid = NIL; |
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| 105 | static PORT NetRxPort; |
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| 106 | |||
| 107 | /* void (*vortex_send)(DWORD BaseAddress, DWORD *txbuff, int len); */ |
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| 108 | |||
| 109 | int ethIsInstalled = FALSE; |
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| 110 | |||
| 111 | /* device descriptor */ |
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| 112 | struct eth_device eth_dev; |
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| 113 | struct pci_des pci_devs[5]; |
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| 114 | /* This is the Linux one!!! */ |
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| 115 | static struct device device0 = { |
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| 116 | "eth0", 0, 0, 0, 0, ETH0_ADDR, ETH0_IRQ, 0, 0, 0, NULL, NULL}; |
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| 117 | struct device *dev_base = &device0; |
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| 118 | |||
| 119 | /* received frames buffers */ |
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| 120 | extern struct netbuff rxbuff; /* from skbuff.c */ |
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| 121 | |||
| 122 | /* buffers for the frames to send */ |
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| 123 | /* struct netbuff txbuff; */ |
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| 124 | |||
| 125 | /* Called if an unknown frames arrives */ |
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| 126 | void eth_nullfun(void *pkt) |
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| 127 | { |
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| 128 | kern_raise(ETH_NULLPROTOCOL_EXC,NIL); |
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| 129 | } |
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| 130 | |||
| 131 | |||
| 132 | |||
| 133 | |||
| 134 | void dev_tint(struct device *dev) |
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| 135 | { |
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| 34 | pj | 136 | printk(KERN_WARNING "Warning!!!! dev_tint called!!! (Why?)\n"); |
| 2 | pj | 137 | sys_abort(201); |
| 138 | } |
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| 139 | |||
| 140 | /* |
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| 141 | ----------------------------------------------------------------------- |
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| 142 | The extern process calls this function when a frame arrives |
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| 143 | ----------------------------------------------------------------------- |
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| 144 | */ |
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| 145 | |||
| 146 | void netif_rx(struct sk_buff *skb) |
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| 147 | { |
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| 148 | //cprintf("DENTRO netif_rx, skbuf=%p\n",skb->data); |
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| 149 | if (nettask_pid == NIL) { |
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| 17 | pj | 150 | printk(KERN_CRIT "Net receives packets, but the driver doesn't exist!!!\n"); |
| 2 | pj | 151 | sys_abort(300); |
| 152 | } |
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| 153 | |||
| 154 | port_send(NetRxPort,skb,NON_BLOCK); |
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| 155 | /* task_activate(nettask_pid);*/ |
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| 156 | } |
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| 157 | |||
| 158 | TASK net_extern_driver(void) |
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| 159 | { |
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| 160 | static PORT NetPort; |
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| 161 | struct sk_buff skb; |
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| 162 | void *pkt; |
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| 163 | int len; |
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| 164 | BYTE count; |
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| 165 | int i; |
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| 166 | |||
| 167 | NetPort = port_connect("NetPort", sizeof(struct sk_buff), STREAM, READ); |
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| 168 | while (1) { |
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| 169 | /* debug... */ |
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| 170 | netlev = 1; |
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| 171 | port_receive(NetPort,&skb,BLOCK); |
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| 172 | pkt = skb.data; |
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| 173 | len = skb.len; |
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| 174 | |||
| 175 | ((struct eth_header *)pkt)->type = ntohs(((struct eth_header *)pkt)->type); |
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| 176 | count = 0; |
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| 177 | /* Search for the frame protocol...*/ |
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| 178 | for (i = 0; i < definedprotocols; i++) { |
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| 179 | /* debug... */ |
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| 180 | netlev = 10 + i; |
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| 181 | if (eth_table[i].type == (((struct eth_header *)pkt)->type)) { |
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| 182 | count++; |
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| 183 | /*...and call the protocol CallBack!!! */ |
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| 184 | eth_table[i].rfun(pkt); |
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| 185 | } |
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| 186 | } |
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| 187 | |||
| 188 | /* debug... */ |
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| 189 | netlev = 20; |
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| 190 | //cprintf("ETH: releasing %p\n", pkt); |
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| 205 | pj | 191 | |
| 192 | // NOTE changed by PJ because skb.data not always point to the |
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| 193 | // buffer start!!!... it is skb.head that always points there! |
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| 194 | netbuff_release(&rxbuff, skb.head); |
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| 2 | pj | 195 | /* debug... */ |
| 196 | netlev = 30; |
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| 197 | } |
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| 198 | } |
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| 199 | |||
| 200 | /* |
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| 201 | -------------------- |
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| 202 | Interface functions |
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| 203 | -------------------- |
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| 204 | */ |
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| 205 | /* formatted print of an ethernet header */ |
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| 206 | void eth_printHeader(struct eth_header *p) |
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| 207 | { |
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| 17 | pj | 208 | cprintf("Dest : %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x \n",p->dest.ad[0], |
| 2 | pj | 209 | p->dest.ad[1], |
| 210 | p->dest.ad[2], |
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| 211 | p->dest.ad[3], |
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| 212 | p->dest.ad[4], |
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| 213 | p->dest.ad[5]); |
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| 214 | cprintf("Source : %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x \n",p->source.ad[0], |
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| 215 | p->source.ad[1], |
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| 216 | p->source.ad[2], |
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| 217 | p->source.ad[3], |
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| 218 | p->source.ad[4], |
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| 219 | p->source.ad[5]); |
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| 220 | cprintf("Type : %x\n",p->type); |
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| 221 | } |
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| 222 | |||
| 223 | void eth_showinfo(struct eth_device *d) |
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| 224 | { |
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| 225 | cprintf("IntLine : %d\n",d->IntLine); |
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| 226 | cprintf("BaseAddress : %lx\n",d->BaseAddress); |
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| 227 | cprintf("Address : %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x\n", |
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| 228 | d->addr.ad[0],d->addr.ad[1],d->addr.ad[2], |
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| 229 | d->addr.ad[3],d->addr.ad[4],d->addr.ad[5]); |
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| 230 | } |
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| 231 | |||
| 232 | /* formatted print of an ethernet frame*/ |
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| 233 | void eth_printPkt(char *pkt,int len) |
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| 234 | { |
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| 235 | int i,j,offset; |
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| 236 | |||
| 237 | eth_printHeader((struct eth_header *)pkt); |
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| 238 | offset = sizeof(struct eth_header); |
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| 239 | len -= offset; |
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| 240 | for (i = 0; i < len; i += 10) { |
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| 241 | for (j = 0; j < 10; j++) |
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| 242 | cprintf("%2.2x ",pkt[offset+i+j]); |
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| 243 | for (j = 0; j < 10; j++) |
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| 244 | cputc(pkt[offset+i+j]); |
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| 245 | cprintf("\n"); |
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| 246 | } |
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| 247 | cprintf("\n"); |
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| 248 | } |
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| 249 | |||
| 250 | #if 0 |
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| 251 | /*-------------------- User Interface -----------------------------*/ |
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| 252 | unsigned short htons(unsigned short host) |
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| 253 | { |
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| 254 | return ((host & 0xff00) >> 8) + ((host & 0x00ff) << 8); |
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| 255 | } |
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| 256 | |||
| 257 | unsigned short ntohs(unsigned short host) |
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| 258 | { |
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| 259 | return ((host & 0xff00) >> 8) + ((host & 0x00ff) << 8); |
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| 260 | } |
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| 261 | #endif |
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| 262 | |||
| 263 | /* |
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| 264 | Translate an ethernet address from a text string to an eth_addr |
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| 265 | structure |
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| 266 | */ |
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| 267 | void eth_str2Addr(char *add, struct eth_addr *ds) |
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| 268 | { |
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| 269 | int ad[6]; |
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| 270 | int i,j; |
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| 271 | char c; |
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| 272 | |||
| 273 | i = 0; |
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| 274 | for(j = 0; j < 6; j++) { |
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| 275 | ad[j] = 0; |
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| 276 | while((add[i] != ':') && (add[i] != 0)) { |
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| 277 | c = add[i++]; |
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| 278 | if (c <= '9') c = c - '0'; |
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| 279 | else c = c - 'A' + 10; |
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| 280 | ad[j] = ad[j] * 16 + c; |
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| 281 | } |
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| 282 | i++; |
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| 283 | } |
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| 284 | for (i=0; i<6; i++) ds->ad[i] = ad[i]; |
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| 285 | } |
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| 286 | |||
| 287 | /* Set a higher level protocol's CallBack */ |
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| 288 | int eth_setProtocol(WORD type, void (*recv)(void *pkt)) |
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| 289 | { |
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| 290 | int i; |
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| 291 | |||
| 292 | if (definedprotocols == ETH_MAX_PROTOCOLS) return FALSE; |
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| 293 | for(i = 0; i < definedprotocols; i++) { |
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| 294 | if (eth_table[i].type == type) return FALSE; |
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| 295 | } |
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| 296 | eth_table[definedprotocols].type = type; |
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| 297 | eth_table[definedprotocols++].rfun = recv; |
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| 298 | return TRUE; |
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| 299 | } |
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| 300 | |||
| 301 | /* Fill an ethernet frame's header and return a pointer to the frame's body */ |
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| 302 | void *eth_setHeader(void *b,struct eth_addr dest, WORD type) |
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| 303 | { |
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| 304 | setEthAddr(((struct eth_header *)b)->dest,dest); |
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| 305 | setEthAddr(((struct eth_header *)b)->source,eth_dev.addr); |
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| 306 | /* the type field is in big-endian format */ |
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| 307 | ((struct eth_header *) b)->type = htons(type); |
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| 308 | return((BYTE *)b + sizeof(struct eth_header)); |
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| 309 | } |
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| 310 | |||
| 311 | /* getFirstDataByte : Return a pointer to the body of an ethernet frame */ |
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| 312 | void *eth_getFDB(void *p) |
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| 313 | { |
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| 314 | return ((void *)((BYTE *)p + sizeof(struct eth_header))); |
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| 315 | } |
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| 316 | |||
| 317 | /* eth_getAddress : return the local ethernet address */ |
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| 318 | void eth_getAddress(struct eth_addr *eth) |
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| 319 | { |
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| 320 | memcpy(eth->ad,&(device0.dev_addr),sizeof(struct eth_addr)); |
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| 321 | } |
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| 322 | |||
| 323 | /* Send an ethernet frame */ |
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| 324 | int eth_sendPkt(void *p, int len) |
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| 325 | { |
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| 326 | int i; |
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| 327 | int l; |
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| 328 | struct sk_buff buff; |
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| 329 | |||
| 330 | l = len + sizeof(struct eth_header); |
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| 331 | if (l < 60) { |
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| 332 | for (i = l; i <= 60; i++) *((BYTE *)p + i) = 0; |
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| 333 | l = 60; |
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| 334 | } |
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| 335 | buff.len = l; |
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| 336 | buff.data = p; |
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| 337 | device0.hard_start_xmit(&buff, &device0); |
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| 338 | /* lowlev_send(eth_dev.BaseAddress, p, l);*/ |
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| 339 | return TRUE; |
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| 340 | } |
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| 341 | |||
| 342 | int eth_exc(int err) |
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| 343 | { |
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| 344 | int p; |
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| 345 | |||
| 17 | pj | 346 | if (err != ETH_BUFFERS_FULL) printk(KERN_ERR "Ethernet : "); |
| 2 | pj | 347 | switch (err) { |
| 348 | case ETH_DRIVER_NOT_FOUND : |
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| 17 | pj | 349 | printk(KERN_ERR "NET PANIC --> Etherlink not found.\n"); |
| 2 | pj | 350 | return 0; |
| 351 | case ETH_RXERROR : |
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| 17 | pj | 352 | printk(KERN_ERR "Receive error (vero dramma!!!).\n"); |
| 2 | pj | 353 | return 0; |
| 354 | case ETH_TXERROR : |
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| 17 | pj | 355 | printk(KERN_ERR "Transimit error: N. Max Retry.\n"); |
| 2 | pj | 356 | return 0; |
| 357 | case ETH_PROTOCOL_ERROR : |
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| 17 | pj | 358 | printk(KERN_ERR "Too much protocols.\n"); |
| 2 | pj | 359 | return 0; |
| 360 | case ETH_BUFFERS_FULL: |
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| 17 | pj | 361 | printk(KERN_ERR "Buffers full: frame lost!\n"); |
| 2 | pj | 362 | return 1; |
| 363 | case ETH_NULLPROTOCOL_EXC: |
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| 17 | pj | 364 | printk(KERN_ERR "Null protocol called!!!\n"); |
| 2 | pj | 365 | for (p = 0; p < ETH_MAX_PROTOCOLS; p++) { |
| 17 | pj | 366 | printk(KERN_ERR "%d: %d\n", p, eth_table[p].type); |
| 2 | pj | 367 | } |
| 368 | return 0; |
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| 369 | default : |
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| 370 | return 1; |
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| 371 | } |
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| 372 | } |
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| 373 | |||
| 374 | int eth_init(int mode, TASK_MODEL *m) |
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| 375 | { |
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| 376 | SOFT_TASK_MODEL m_soft; |
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| 377 | int i, ndev; |
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| 378 | WORD Class; |
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| 379 | struct pci_regs *r; |
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| 380 | PID p; |
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| 381 | BYTE cardtype; |
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| 382 | int linux_found = 0; |
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| 383 | |||
| 384 | if (!ethIsInstalled) { |
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| 17 | pj | 385 | printk(KERN_INFO "Hartik/Shark Net lib"); |
| 2 | pj | 386 | /* Scan the devices connected to the PCI bus */ |
| 387 | cardtype = NONE; |
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| 388 | |||
| 389 | skb_init(); |
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| 390 | NetRxPort = port_create("NetPort",sizeof(struct sk_buff),50,STREAM,WRITE); |
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| 391 | if (!m) { |
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| 392 | soft_task_default_model(m_soft); |
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| 393 | soft_task_def_wcet(m_soft, 1000); |
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| 394 | soft_task_def_period(m_soft,20000); |
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| 395 | soft_task_def_met(m_soft, 1000); |
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| 396 | soft_task_def_aperiodic(m_soft); |
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| 397 | soft_task_def_system(m_soft); |
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| 398 | soft_task_def_nokill(m_soft); |
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| 34 | pj | 399 | m = (TASK_MODEL *)&m_soft; |
| 2 | pj | 400 | } |
| 401 | |||
| 402 | nettask_pid = task_create("rxProc", net_extern_driver, m, NULL); |
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| 403 | if (nettask_pid == NIL) { |
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| 17 | pj | 404 | printk(KERN_ERR "Can't create extern driver!!!\n"); |
| 405 | return 0; |
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| 2 | pj | 406 | } |
| 407 | task_activate(nettask_pid); |
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| 408 | if (pci_init() == 1) { |
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| 409 | linuxpci_init(); |
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| 205 | pj | 410 | pci_show(); |
| 17 | pj | 411 | #ifdef DEBUG_ETH |
| 412 | printk(KERN_DEBUG "LF %d\n", linux_found); |
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| 413 | #endif |
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| 2 | pj | 414 | linux_found += (rtl8139_probe(&device0) == 0); |
| 17 | pj | 415 | #ifdef DEBUG_ETH |
| 416 | printk(KERN_DEBUG "LF %d\n", linux_found); |
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| 417 | #endif |
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| 2 | pj | 418 | |
| 419 | linux_found += (tc59x_probe(&device0) == 0); |
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| 17 | pj | 420 | #ifdef DEBUG_ETH |
| 421 | printk(KERN_DEBUG "LF %d\n", linux_found); |
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| 422 | #endif |
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| 205 | pj | 423 | |
| 2 | pj | 424 | #if 0 |
| 425 | ndev = pci_scan_bus(pci_devs); |
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| 426 | #ifdef __ETH_DBG__ |
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| 427 | pci_show(pci_devs, ndev); |
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| 428 | #endif |
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| 429 | for (i = 0; i < ndev; i++) { |
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| 430 | r = (struct pci_regs *) pci_devs[i].mem; |
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| 431 | Class = r->ClassCode; |
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| 432 | /* Is there a network card? */ |
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| 433 | if (Class == 0x0200) { |
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| 434 | if (cardtype == NONE) { |
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| 435 | cardtype = UNKNOWN; |
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| 436 | } |
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| 437 | /* is it a 3COM card? */ |
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| 438 | if (r->VendorId == 0x10b7) { |
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| 439 | /* YES!!!!!! */ |
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| 440 | lowlev_info = vortex_info; |
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| 441 | lowlev_readregs = vortex_readregs; |
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| 442 | lowlev_open = vortex_open; |
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| 443 | lowlev_close = vortex_close; |
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| 444 | if (mode == TXTASK) { |
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| 445 | lowlev_send = vortex_send_msg; |
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| 446 | } else { |
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| 447 | lowlev_send = vortex_send_mem; |
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| 448 | } |
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| 17 | pj | 449 | printk(KERN_INFO "PCI Ethlink card found:\n"); |
| 2 | pj | 450 | lowlev_info(r); |
| 451 | cardtype = VORTEX; |
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| 452 | } |
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| 453 | } |
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| 454 | } |
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| 455 | } |
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| 456 | if ((cardtype == NONE) || (cardtype == UNKNOWN)) { |
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| 457 | exc_raise(ETH_DRIVER_NOT_FOUND); |
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| 458 | } |
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| 459 | /*PUT HERE THE PFUN INIT!!!*/ |
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| 460 | if (cardtype == VORTEX) { |
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| 461 | } |
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| 462 | /* |
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| 463 | Use it if you want to see the value of the internal |
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| 464 | registers of the card |
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| 465 | */ |
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| 466 | /*vortex_readregs(eth_dev.BaseAddress);*/ |
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| 467 | |||
| 468 | p = lowlev_open(eth_dev.BaseAddress, mode); |
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| 469 | |||
| 470 | /* Set the Fast Handler and the external process */ |
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| 471 | handler_set(eth_dev.IntLine, net_handler, p); |
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| 472 | #else |
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| 473 | } |
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| 474 | if (linux_found == 0) { |
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| 17 | pj | 475 | linux_found += (el3_probe(&device0) == 0); |
| 476 | #ifdef DEBUG_ETH |
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| 477 | printk(KERN_DEBUG "LF %d\n", linux_found); |
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| 478 | #endif |
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| 479 | linux_found += (ne_probe(&device0) == 0); |
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| 480 | #ifdef DEBUG_ETH |
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| 481 | printk(KERN_DEBUG "LF %d\n", linux_found); |
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| 482 | #endif |
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| 2 | pj | 483 | } |
| 484 | |||
| 485 | /* |
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| 486 | if (mode & LOOPBACK) { |
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| 487 | cprintf("Installing loopback device (forced)\n"); |
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| 488 | loopback_init(&device0); |
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| 489 | } |
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| 490 | */ |
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| 491 | if (linux_found) { |
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| 492 | device0.open(&device0); |
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| 17 | pj | 493 | printk(KERN_INFO "Net card found!!!\n"); |
| 2 | pj | 494 | } else { |
| 17 | pj | 495 | printk(KERN_INFO "No card found... \n"); |
| 2 | pj | 496 | /* cprintf("No card found... Installing loopback device\n"); |
| 497 | loopback_init(&device0); |
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| 498 | device0.open(&device0);*/ |
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| 499 | return 0; |
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| 500 | } |
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| 501 | #endif |
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| 502 | |||
| 503 | // netbuff_init(&rxbuff, ETH_RX_BUFFERS, ETH_MAX_LEN); |
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| 504 | // netbuff_init(&txbuff, ETH_TX_BUFFERS, ETH_MAX_LEN); |
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| 505 | |||
| 506 | definedprotocols = 0; |
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| 507 | for (i = 0; i < ETH_MAX_PROTOCOLS; i++) { |
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| 508 | eth_table[i].type = 0; |
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| 509 | eth_table[i].rfun = eth_nullfun; |
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| 510 | } |
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| 511 | ethIsInstalled = TRUE; |
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| 512 | /* Don't crash the system at the exit, please :) */ |
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| 513 | sys_atrunlevel(eth_close,NULL,RUNLEVEL_BEFORE_EXIT); |
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| 514 | |||
| 515 | } else { |
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| 17 | pj | 516 | printk(KERN_INFO "Ethernet already installed!!!\n"); |
| 2 | pj | 517 | return 0; |
| 518 | } |
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| 519 | return 1; |
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| 520 | } |
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| 521 | |||
| 522 | void eth_close(void *a) |
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| 523 | { |
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| 17 | pj | 524 | #ifdef DEBUG_ETH |
| 525 | printk(KERN_DEBUG "CLOSE!!!!\n"); |
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| 526 | #endif |
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| 527 | if (ethIsInstalled == TRUE) { |
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| 528 | device0.stop(&device0); /*This seems to break everithing... |
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| 529 | // lowlev_close(eth_dev.BaseAddress);*/ |
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| 530 | ethIsInstalled = FALSE; |
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| 531 | } |
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| 2 | pj | 532 | } |