1 /* $NetBSD: netif_of.c,v 1.3 1997/07/22 17:41:06 drochner 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 #if 0 /* XXX thorpej */ 46 #include <string.h> 47 #include <time.h> 48 #endif 49 50 #include <net/if.h> 51 #include <net/if_ether.h> 52 53 #include <netinet/in.h> 54 #include <netinet/in_systm.h> 55 56 #include <lib/libsa/stand.h> 57 #include <lib/libsa/net.h> 58 #include <lib/libsa/netif.h> 59 60 #include <powerpc/stand/ofwboot/ofdev.h> 61 #include <powerpc/stand/ofwboot/openfirm.h> 62 63 static struct netif netif_of; 64 65 struct iodesc sockets[SOPEN_MAX]; 66 67 struct iodesc * 68 socktodesc(sock) 69 int sock; 70 { 71 if (sock != 0) 72 return NULL; 73 return sockets; 74 } 75 76 int 77 netif_open(machdep_hint) 78 void *machdep_hint; 79 { 80 struct of_dev *op = machdep_hint; 81 struct iodesc *io; 82 int fd, error; 83 char addr[32]; 84 85 #ifdef NETIF_DEBUG 86 printf("netif_open..."); 87 #endif 88 /* find a free socket */ 89 io = sockets; 90 if (io->io_netif) { 91 #ifdef NETIF_DEBUG 92 printf("device busy\n"); 93 #endif 94 errno = ENFILE; 95 return -1; 96 } 97 bzero(io, sizeof *io); 98 99 netif_of.nif_devdata = op; 100 io->io_netif = &netif_of; 101 102 /* Put our ethernet address in io->myea */ 103 OF_getprop(OF_instance_to_package(op->handle), 104 "mac-address", io->myea, sizeof io->myea); 105 106 #ifdef NETIF_DEBUG 107 printf("OK\n"); 108 #endif 109 return 0; 110 } 111 112 int 113 netif_close(fd) 114 int fd; 115 { 116 struct iodesc *io; 117 struct netif *ni; 118 119 #ifdef NETIF_DEBUG 120 printf("netif_close(%x)...", fd); 121 #endif 122 if (fd != 0) { 123 #ifdef NETIF_DEBUG 124 printf("EBADF\n"); 125 #endif 126 errno = EBADF; 127 return -1; 128 } 129 130 io = &sockets[fd]; 131 ni = io->io_netif; 132 if (ni != NULL) { 133 ni->nif_devdata = NULL; 134 io->io_netif = NULL; 135 } 136 #ifdef NETIF_DEBUG 137 printf("OK\n"); 138 #endif 139 return 0; 140 } 141 142 /* 143 * Send a packet. The ether header is already there. 144 * Return the length sent (or -1 on error). 145 */ 146 ssize_t 147 netif_put(desc, pkt, len) 148 struct iodesc *desc; 149 void *pkt; 150 size_t len; 151 { 152 struct of_dev *op; 153 ssize_t rv; 154 size_t sendlen; 155 156 op = desc->io_netif->nif_devdata; 157 158 #ifdef NETIF_DEBUG 159 { 160 struct ether_header *eh; 161 162 printf("netif_put: desc=0x%x pkt=0x%x len=%d\n", 163 desc, pkt, len); 164 eh = pkt; 165 printf("dst: %s ", ether_sprintf(eh->ether_dhost)); 166 printf("src: %s ", ether_sprintf(eh->ether_shost)); 167 printf("type: 0x%x\n", eh->ether_type & 0xFFFF); 168 } 169 #endif 170 171 sendlen = len; 172 if (sendlen < 60) { 173 sendlen = 60; 174 #ifdef NETIF_DEBUG 175 printf("netif_put: length padded to %d\n", sendlen); 176 #endif 177 } 178 179 rv = OF_write(op->handle, pkt, sendlen); 180 181 #ifdef NETIF_DEBUG 182 printf("netif_put: xmit returned %d\n", rv); 183 #endif 184 185 return rv; 186 } 187 188 /* 189 * Receive a packet, including the ether header. 190 * Return the total length received (or -1 on error). 191 */ 192 ssize_t 193 netif_get(desc, pkt, maxlen, timo) 194 struct iodesc *desc; 195 void *pkt; 196 size_t maxlen; 197 time_t timo; 198 { 199 struct of_dev *op; 200 int tick0, tmo_ms; 201 int len; 202 203 op = desc->io_netif->nif_devdata; 204 205 #ifdef NETIF_DEBUG 206 printf("netif_get: pkt=0x%x, maxlen=%d, tmo=%d\n", 207 pkt, maxlen, timo); 208 #endif 209 210 tmo_ms = timo * 1000; 211 tick0 = OF_milliseconds(); 212 213 do { 214 len = OF_read(op->handle, pkt, maxlen); 215 } while ((len == -2 || len == 0) && 216 (OF_milliseconds() - tick0 < tmo_ms)); 217 218 #ifdef NETIF_DEBUG 219 printf("netif_get: received len=%d\n", len); 220 #endif 221 222 if (len < 12) 223 return -1; 224 225 #ifdef NETIF_DEBUG 226 { 227 struct ether_header *eh = pkt; 228 229 printf("dst: %s ", ether_sprintf(eh->ether_dhost)); 230 printf("src: %s ", ether_sprintf(eh->ether_shost)); 231 printf("type: 0x%x\n", eh->ether_type & 0xFFFF); 232 } 233 #endif 234 235 return len; 236 } 237 238 /* 239 * Shouldn't really be here, but is used solely for networking, so... 240 */ 241 time_t 242 getsecs() 243 { 244 return OF_milliseconds() / 1000; 245 } 246