1 /* $NetBSD: netif_of.c,v 1.2 2003/03/13 15:36:07 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 #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 54 #include "ofdev.h" 55 #include "openfirm.h" 56 57 #include "netif_of.h" 58 59 static struct iodesc sdesc; 60 61 struct iodesc * 62 socktodesc(sock) 63 int sock; 64 { 65 if (sock != 0) 66 return NULL; 67 return &sdesc; 68 } 69 70 int 71 netif_of_open(op) 72 struct of_dev *op; 73 { 74 struct iodesc *io; 75 int fd, error; 76 char addr[32]; 77 78 #ifdef NETIF_DEBUG 79 printf("netif_open..."); 80 #endif 81 /* find a free socket */ 82 io = &sdesc; 83 if (io->io_netif) { 84 #ifdef NETIF_DEBUG 85 printf("device busy\n"); 86 #endif 87 errno = ENFILE; 88 return -1; 89 } 90 memset(io, 0, sizeof *io); 91 92 io->io_netif = (void *)op; 93 94 /* Put our ethernet address in io->myea */ 95 OF_getprop(OF_instance_to_package(op->handle), 96 "mac-address", io->myea, sizeof io->myea); 97 98 #ifdef NETIF_DEBUG 99 printf("OK\n"); 100 #endif 101 return 0; 102 } 103 104 void 105 netif_of_close(fd) 106 int fd; 107 { 108 struct iodesc *io; 109 110 #ifdef NETIF_DEBUG 111 printf("netif_close(%x)...", fd); 112 #endif 113 114 #ifdef NETIF_DEBUG 115 if (fd != 0) { 116 printf("EBADF\n"); 117 return; 118 } 119 #endif 120 121 io = &sdesc; 122 io->io_netif = NULL; 123 124 #ifdef NETIF_DEBUG 125 printf("OK\n"); 126 #endif 127 } 128 129 /* 130 * Send a packet. The ether header is already there. 131 * Return the length sent (or -1 on error). 132 */ 133 ssize_t 134 netif_put(desc, pkt, len) 135 struct iodesc *desc; 136 void *pkt; 137 size_t len; 138 { 139 struct of_dev *op; 140 ssize_t rv; 141 size_t sendlen; 142 143 op = (struct of_dev *)desc->io_netif; 144 145 #ifdef NETIF_DEBUG 146 { 147 struct ether_header *eh; 148 149 printf("netif_put: desc=0x%x pkt=0x%x len=%d\n", 150 desc, pkt, len); 151 eh = pkt; 152 printf("dst: %s ", ether_sprintf(eh->ether_dhost)); 153 printf("src: %s ", ether_sprintf(eh->ether_shost)); 154 printf("type: 0x%x\n", eh->ether_type & 0xFFFF); 155 } 156 #endif 157 158 sendlen = len; 159 if (sendlen < 60) { 160 sendlen = 60; 161 #ifdef NETIF_DEBUG 162 printf("netif_put: length padded to %d\n", sendlen); 163 #endif 164 } 165 166 rv = OF_write(op->handle, pkt, sendlen); 167 168 #ifdef NETIF_DEBUG 169 printf("netif_put: xmit returned %d\n", rv); 170 #endif 171 172 return rv; 173 } 174 175 /* 176 * Receive a packet, including the ether header. 177 * Return the total length received (or -1 on error). 178 */ 179 ssize_t 180 netif_get(desc, pkt, maxlen, timo) 181 struct iodesc *desc; 182 void *pkt; 183 size_t maxlen; 184 time_t timo; 185 { 186 struct of_dev *op; 187 int tick0, tmo_ms; 188 int len; 189 190 op = (struct of_dev *)desc->io_netif; 191 192 #ifdef NETIF_DEBUG 193 printf("netif_get: pkt=0x%x, maxlen=%d, tmo=%d\n", 194 pkt, maxlen, timo); 195 #endif 196 197 tmo_ms = timo * 1000; 198 tick0 = OF_milliseconds(); 199 200 do { 201 len = OF_read(op->handle, pkt, maxlen); 202 } while ((len == -2 || len == 0) && 203 (OF_milliseconds() - tick0 < tmo_ms)); 204 205 #ifdef NETIF_DEBUG 206 printf("netif_get: received len=%d\n", len); 207 #endif 208 209 if (len < 12) 210 return -1; 211 212 #ifdef NETIF_DEBUG 213 { 214 struct ether_header *eh = pkt; 215 216 printf("dst: %s ", ether_sprintf(eh->ether_dhost)); 217 printf("src: %s ", ether_sprintf(eh->ether_shost)); 218 printf("type: 0x%x\n", eh->ether_type & 0xFFFF); 219 } 220 #endif 221 222 return len; 223 } 224 225 /* 226 * Shouldn't really be here, but is used solely for networking, so... 227 */ 228 time_t 229 getsecs() 230 { 231 return OF_milliseconds() / 1000; 232 } 233