1 /* $NetBSD: netif_of.c,v 1.9 2011/07/30 04:18:38 jakllsch 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 <machine/promlib.h> 56 57 #include "ofdev.h" 58 59 static struct netif netif_of; 60 61 struct iodesc sockets[SOPEN_MAX]; 62 63 struct iodesc * 64 socktodesc(int sock) 65 { 66 if (sock != 0) 67 return NULL; 68 return sockets; 69 } 70 71 int 72 netif_open(void *machdep_hint) 73 { 74 struct of_dev *op = machdep_hint; 75 struct iodesc *io; 76 77 #ifdef NETIF_DEBUG 78 printf("netif_open..."); 79 #endif 80 /* find a free socket */ 81 io = sockets; 82 if (io->io_netif) { 83 #ifdef NETIF_DEBUG 84 printf("device busy\n"); 85 #endif 86 errno = ENFILE; 87 return -1; 88 } 89 memset(io, 0, sizeof *io); 90 91 netif_of.nif_devdata = op; 92 io->io_netif = &netif_of; 93 94 /* Put our ethernet address in io->myea */ 95 _prom_getprop(prom_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 int 105 netif_close(int fd) 106 { 107 struct iodesc *io; 108 struct netif *ni; 109 110 #ifdef NETIF_DEBUG 111 printf("netif_close(%x)...", fd); 112 #endif 113 if (fd != 0) { 114 #ifdef NETIF_DEBUG 115 printf("EBADF\n"); 116 #endif 117 errno = EBADF; 118 return -1; 119 } 120 121 io = &sockets[fd]; 122 ni = io->io_netif; 123 if (ni != NULL) { 124 ni->nif_devdata = NULL; 125 io->io_netif = NULL; 126 } 127 #ifdef NETIF_DEBUG 128 printf("OK\n"); 129 #endif 130 return 0; 131 } 132 133 /* 134 * Send a packet. The ether header is already there. 135 * Return the length sent (or -1 on error). 136 */ 137 ssize_t 138 netif_put(struct iodesc *desc, void *pkt, size_t len) 139 { 140 struct of_dev *op; 141 ssize_t rv; 142 size_t sendlen; 143 144 op = ((struct netif *)desc->io_netif)->nif_devdata; 145 146 #ifdef NETIF_DEBUG 147 { 148 struct ether_header *eh; 149 150 printf("netif_put: desc=%p pkt=%p len=%zu\n", 151 desc, pkt, len); 152 eh = pkt; 153 printf("dst: %s ", ether_sprintf(eh->ether_dhost)); 154 printf("src: %s ", ether_sprintf(eh->ether_shost)); 155 printf("type: 0x%x\n", eh->ether_type & 0xFFFF); 156 } 157 #endif 158 159 sendlen = len; 160 if (sendlen < 60) { 161 sendlen = 60; 162 #ifdef NETIF_DEBUG 163 printf("netif_put: length padded to %zu\n", sendlen); 164 #endif 165 } 166 167 rv = prom_write(op->handle, pkt, sendlen); 168 169 #ifdef NETIF_DEBUG 170 printf("netif_put: xmit returned %zd\n", rv); 171 #endif 172 173 if (rv > len) 174 rv = len; 175 176 return rv; 177 } 178 179 /* 180 * Receive a packet, including the ether header. 181 * Return the total length received (or -1 on error). 182 */ 183 ssize_t 184 netif_get(struct iodesc *desc, void *pkt, size_t maxlen, saseconds_t timo) 185 { 186 struct of_dev *op; 187 int tick0, tmo_ms; 188 int len; 189 190 op = ((struct netif *)desc->io_netif)->nif_devdata; 191 192 #ifdef NETIF_DEBUG 193 printf("netif_get: pkt=%p, maxlen=%zu, tmo=%d\n", 194 pkt, maxlen, timo); 195 #endif 196 197 tmo_ms = timo * 1000; 198 tick0 = prom_ticks(); 199 200 do { 201 len = prom_read(op->handle, pkt, maxlen); 202 } while ((len == -2 || len == 0) && 203 (prom_ticks() - 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 satime_t 229 getsecs(void) 230 { 231 232 return prom_ticks() / 1000; 233 } 234
Indexes created Sat Sep 20 22:09:52 GMT 2025