1 /* $NetBSD: netif_of.c,v 1.1 2000/08/20 14:58:39 mrg Exp $ */ 2 3 /* 4 * Copyright (C) 1995 Wolfgang Solfrank. 5 * Copyright (C) 1995 TooLs GmbH. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by TooLs GmbH. 19 * 4. The name of TooLs GmbH may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 27 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 28 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 29 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 30 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 31 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * Open Firmware does most of the job for interfacing to the hardware, 36 * so it is easiest to just replace the netif module with 37 * this adaptation to the PROM network interface. 38 * 39 * Note: this is based in part on sys/arch/sparc/stand/netif_sun.c 40 */ 41 42 #include <sys/param.h> 43 #include <sys/socket.h> 44 45 #include <net/if.h> 46 #include <net/if_ether.h> 47 48 #include <netinet/in.h> 49 #include <netinet/in_systm.h> 50 51 #include <lib/libsa/stand.h> 52 #include <lib/libsa/net.h> 53 #include <lib/libsa/netif.h> 54 55 #include "ofdev.h" 56 #include "openfirm.h" 57 58 static struct netif netif_of; 59 60 struct iodesc sockets[SOPEN_MAX]; 61 62 struct iodesc * 63 socktodesc(sock) 64 int sock; 65 { 66 if (sock != 0) 67 return NULL; 68 return sockets; 69 } 70 71 int 72 netif_open(machdep_hint) 73 void *machdep_hint; 74 { 75 struct of_dev *op = machdep_hint; 76 struct iodesc *io; 77 int fd, error; 78 char addr[32]; 79 80 #ifdef NETIF_DEBUG 81 printf("netif_open..."); 82 #endif 83 /* find a free socket */ 84 io = sockets; 85 if (io->io_netif) { 86 #ifdef NETIF_DEBUG 87 printf("device busy\n"); 88 #endif 89 errno = ENFILE; 90 return -1; 91 } 92 bzero(io, sizeof *io); 93 94 netif_of.nif_devdata = op; 95 io->io_netif = &netif_of; 96 97 /* Put our ethernet address in io->myea */ 98 OF_getprop(OF_instance_to_package(op->handle), 99 "mac-address", io->myea, sizeof io->myea); 100 101 #ifdef NETIF_DEBUG 102 printf("OK\n"); 103 #endif 104 return 0; 105 } 106 107 int 108 netif_close(fd) 109 int fd; 110 { 111 struct iodesc *io; 112 struct netif *ni; 113 114 #ifdef NETIF_DEBUG 115 printf("netif_close(%x)...", fd); 116 #endif 117 if (fd != 0) { 118 #ifdef NETIF_DEBUG 119 printf("EBADF\n"); 120 #endif 121 errno = EBADF; 122 return -1; 123 } 124 125 io = &sockets[fd]; 126 ni = io->io_netif; 127 if (ni != NULL) { 128 ni->nif_devdata = NULL; 129 io->io_netif = NULL; 130 } 131 #ifdef NETIF_DEBUG 132 printf("OK\n"); 133 #endif 134 return 0; 135 } 136 137 /* 138 * Send a packet. The ether header is already there. 139 * Return the length sent (or -1 on error). 140 */ 141 ssize_t 142 netif_put(desc, pkt, len) 143 struct iodesc *desc; 144 void *pkt; 145 size_t len; 146 { 147 struct of_dev *op; 148 ssize_t rv; 149 size_t sendlen; 150 151 op = desc->io_netif->nif_devdata; 152 153 #ifdef NETIF_DEBUG 154 { 155 struct ether_header *eh; 156 157 printf("netif_put: desc=0x%x pkt=0x%x len=%d\n", 158 desc, pkt, len); 159 eh = pkt; 160 printf("dst: %s ", ether_sprintf(eh->ether_dhost)); 161 printf("src: %s ", ether_sprintf(eh->ether_shost)); 162 printf("type: 0x%x\n", eh->ether_type & 0xFFFF); 163 } 164 #endif 165 166 sendlen = len; 167 if (sendlen < 60) { 168 sendlen = 60; 169 #ifdef NETIF_DEBUG 170 printf("netif_put: length padded to %d\n", sendlen); 171 #endif 172 } 173 174 rv = OF_write(op->handle, pkt, sendlen); 175 176 #ifdef NETIF_DEBUG 177 printf("netif_put: xmit returned %d\n", rv); 178 #endif 179 180 return rv; 181 } 182 183 /* 184 * Receive a packet, including the ether header. 185 * Return the total length received (or -1 on error). 186 */ 187 ssize_t 188 netif_get(desc, pkt, maxlen, timo) 189 struct iodesc *desc; 190 void *pkt; 191 size_t maxlen; 192 time_t timo; 193 { 194 struct of_dev *op; 195 int tick0, tmo_ms; 196 int len; 197 198 op = desc->io_netif->nif_devdata; 199 200 #ifdef NETIF_DEBUG 201 printf("netif_get: pkt=0x%x, maxlen=%d, tmo=%d\n", 202 pkt, maxlen, timo); 203 #endif 204 205 tmo_ms = timo * 1000; 206 tick0 = OF_milliseconds(); 207 208 do { 209 len = OF_read(op->handle, pkt, maxlen); 210 } while ((len == -2 || len == 0) && 211 (OF_milliseconds() - tick0 < tmo_ms)); 212 213 #ifdef NETIF_DEBUG 214 printf("netif_get: received len=%d\n", len); 215 #endif 216 217 if (len < 12) 218 return -1; 219 220 #ifdef NETIF_DEBUG 221 { 222 struct ether_header *eh = pkt; 223 224 printf("dst: %s ", ether_sprintf(eh->ether_dhost)); 225 printf("src: %s ", ether_sprintf(eh->ether_shost)); 226 printf("type: 0x%x\n", eh->ether_type & 0xFFFF); 227 } 228 #endif 229 230 return len; 231 } 232 233 /* 234 * Shouldn't really be here, but is used solely for networking, so... 235 */ 236 time_t 237 getsecs() 238 { 239 return OF_milliseconds() / 1000; 240 } 241