1 /* $NetBSD: netif_of.c,v 1.5 2002/03/29 15:15:07 tsutsui 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 memset(io, 0, 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 "local-mac-address", io->myea, sizeof io->myea) == -1 && 100 OF_getprop(OF_instance_to_package(op->handle), 101 "mac-address", io->myea, sizeof io->myea); 102 103 #ifdef NETIF_DEBUG 104 printf("OK\n"); 105 #endif 106 return 0; 107 } 108 109 int 110 netif_close(fd) 111 int fd; 112 { 113 struct iodesc *io; 114 struct netif *ni; 115 116 #ifdef NETIF_DEBUG 117 printf("netif_close(%x)...", fd); 118 #endif 119 if (fd != 0) { 120 #ifdef NETIF_DEBUG 121 printf("EBADF\n"); 122 #endif 123 errno = EBADF; 124 return -1; 125 } 126 127 io = &sockets[fd]; 128 ni = io->io_netif; 129 if (ni != NULL) { 130 ni->nif_devdata = NULL; 131 io->io_netif = NULL; 132 } 133 #ifdef NETIF_DEBUG 134 printf("OK\n"); 135 #endif 136 return 0; 137 } 138 139 /* 140 * Send a packet. The ether header is already there. 141 * Return the length sent (or -1 on error). 142 */ 143 ssize_t 144 netif_put(desc, pkt, len) 145 struct iodesc *desc; 146 void *pkt; 147 size_t len; 148 { 149 struct of_dev *op; 150 ssize_t rv; 151 size_t sendlen; 152 153 op = desc->io_netif->nif_devdata; 154 155 #ifdef NETIF_DEBUG 156 { 157 struct ether_header *eh; 158 159 printf("netif_put: desc=0x%x pkt=0x%x len=%d\n", 160 desc, pkt, len); 161 eh = pkt; 162 printf("dst: %s ", ether_sprintf(eh->ether_dhost)); 163 printf("src: %s ", ether_sprintf(eh->ether_shost)); 164 printf("type: 0x%x\n", eh->ether_type & 0xFFFF); 165 } 166 #endif 167 168 sendlen = len; 169 if (sendlen < 60) { 170 sendlen = 60; 171 #ifdef NETIF_DEBUG 172 printf("netif_put: length padded to %d\n", sendlen); 173 #endif 174 } 175 176 if (op->dmabuf) { 177 memcpy(op->dmabuf, pkt, sendlen); 178 pkt = op->dmabuf; 179 } 180 rv = OF_write(op->handle, pkt, sendlen); 181 182 #ifdef NETIF_DEBUG 183 printf("netif_put: xmit returned %d\n", rv); 184 #endif 185 186 return rv; 187 } 188 189 /* 190 * Receive a packet, including the ether header. 191 * Return the total length received (or -1 on error). 192 */ 193 ssize_t 194 netif_get(desc, pkt, maxlen, timo) 195 struct iodesc *desc; 196 void *pkt; 197 size_t maxlen; 198 time_t timo; 199 { 200 struct of_dev *op; 201 int tick0, tmo_ms; 202 int len; 203 204 op = desc->io_netif->nif_devdata; 205 206 #ifdef NETIF_DEBUG 207 printf("netif_get: pkt=0x%x, maxlen=%d, tmo=%d\n", 208 pkt, maxlen, timo); 209 #endif 210 211 tmo_ms = timo * 1000; 212 tick0 = OF_milliseconds(); 213 214 do { 215 len = OF_read(op->handle, pkt, maxlen); 216 } while ((len == -2 || len == 0) && 217 (OF_milliseconds() - tick0 < tmo_ms)); 218 219 #ifdef NETIF_DEBUG 220 printf("netif_get: received len=%d\n", len); 221 #endif 222 223 if (len < 12) 224 return -1; 225 226 #ifdef NETIF_DEBUG 227 { 228 struct ether_header *eh = pkt; 229 230 printf("dst: %s ", ether_sprintf(eh->ether_dhost)); 231 printf("src: %s ", ether_sprintf(eh->ether_shost)); 232 printf("type: 0x%x\n", eh->ether_type & 0xFFFF); 233 } 234 #endif 235 236 return len; 237 } 238 239 /* 240 * Shouldn't really be here, but is used solely for networking, so... 241 */ 242 time_t 243 getsecs() 244 { 245 return OF_milliseconds() / 1000; 246 } 247