1 /* $NetBSD: netif_sun.c,v 1.7 2004/03/15 23:57:27 pk Exp $ */ 2 3 /* 4 * Copyright (c) 1995 Gordon W. Ross 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 4. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by Gordon W. Ross 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /* 34 * The Sun PROM has a fairly general set of network drivers, 35 * so it is easiest to just replace the netif module with 36 * this adaptation to the PROM network interface. 37 */ 38 39 #include <sys/param.h> 40 #include <sys/socket.h> 41 42 #include <net/if.h> 43 #include <net/if_ether.h> 44 45 #include <netinet/in.h> 46 #include <netinet/in_systm.h> 47 48 #include <lib/libsa/stand.h> 49 #include <lib/libsa/net.h> 50 #include <lib/libsa/netif.h> 51 #include <lib/libkern/libkern.h> 52 53 #include <machine/promlib.h> 54 #include <sparc/stand/common/promdev.h> 55 56 static struct netif netif_prom; 57 58 #ifdef NETIF_DEBUG 59 int netif_debug; 60 #endif 61 62 struct iodesc sockets[SOPEN_MAX]; 63 64 struct iodesc * 65 socktodesc(sock) 66 int sock; 67 { 68 if (sock != 0) { 69 return(NULL); 70 } 71 return (sockets); 72 } 73 74 int 75 netif_open(machdep_hint) 76 void *machdep_hint; 77 { 78 struct promdata *pd = machdep_hint; 79 struct iodesc *io; 80 int node; 81 82 /* find a free socket */ 83 io = sockets; 84 if (io->io_netif) { 85 #ifdef DEBUG 86 printf("netif_open: device busy\n"); 87 #endif 88 errno = ENFILE; 89 return (-1); 90 } 91 bzero(io, sizeof(*io)); 92 93 netif_prom.nif_devdata = pd; 94 io->io_netif = &netif_prom; 95 96 /* Put our ethernet address in io->myea */ 97 switch (prom_version()) { 98 case PROM_OBP_V2: 99 case PROM_OBP_V3: 100 case PROM_OPENFIRM: 101 node = prom_instance_to_package(pd->fd); 102 break; 103 default: 104 node = 0; 105 } 106 prom_getether(node, io->myea); 107 108 return(0); 109 } 110 111 int 112 netif_close(fd) 113 int fd; 114 { 115 struct iodesc *io; 116 struct netif *ni; 117 118 if (fd != 0) { 119 errno = EBADF; 120 return(-1); 121 } 122 123 io = &sockets[fd]; 124 ni = io->io_netif; 125 if (ni != NULL) { 126 ni->nif_devdata = NULL; 127 io->io_netif = NULL; 128 } 129 return(0); 130 } 131 132 /* 133 * Send a packet. The ether header is already there. 134 * Return the length sent (or -1 on error). 135 */ 136 ssize_t 137 netif_put(desc, pkt, len) 138 struct iodesc *desc; 139 void *pkt; 140 size_t len; 141 { 142 struct promdata *pd; 143 ssize_t rv; 144 size_t sendlen; 145 146 pd = (struct promdata *)((struct netif *)desc->io_netif)->nif_devdata; 147 148 #ifdef NETIF_DEBUG 149 if (netif_debug) { 150 struct ether_header *eh; 151 152 printf("netif_put: desc=0x%x pkt=0x%x len=%d\n", 153 desc, pkt, len); 154 eh = pkt; 155 printf("dst: %s ", ether_sprintf(eh->ether_dhost)); 156 printf("src: %s ", ether_sprintf(eh->ether_shost)); 157 printf("type: 0x%x\n", eh->ether_type & 0xFFFF); 158 } 159 #endif 160 161 sendlen = len; 162 if (sendlen < 60) { 163 sendlen = 60; 164 #ifdef NETIF_DEBUG 165 printf("netif_put: length padded to %d\n", sendlen); 166 #endif 167 } 168 169 rv = (*pd->xmit)(pd, pkt, sendlen); 170 171 #ifdef NETIF_DEBUG 172 if (netif_debug) 173 printf("netif_put: xmit returned %d\n", rv); 174 #endif 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(desc, pkt, maxlen, timo) 185 struct iodesc *desc; 186 void *pkt; 187 size_t maxlen; 188 time_t timo; 189 { 190 struct promdata *pd; 191 int tick0; 192 ssize_t len; 193 194 pd = (struct promdata *)((struct netif *)desc->io_netif)->nif_devdata; 195 196 #ifdef NETIF_DEBUG 197 if (netif_debug) 198 printf("netif_get: pkt=0x%x, maxlen=%d, tmo=%d\n", 199 pkt, maxlen, timo); 200 #endif 201 202 tick0 = getsecs(); 203 204 do { 205 len = (*pd->recv)(pd, pkt, maxlen); 206 } while ((len == 0) && ((getsecs() - tick0) < timo)); 207 208 #ifdef NETIF_DEBUG 209 if (netif_debug) 210 printf("netif_get: received len=%d\n", len); 211 #endif 212 213 if (len < 12) 214 return -1; 215 216 #ifdef NETIF_DEBUG 217 if (netif_debug) { 218 struct ether_header *eh = pkt; 219 220 printf("dst: %s ", ether_sprintf(eh->ether_dhost)); 221 printf("src: %s ", ether_sprintf(eh->ether_shost)); 222 printf("type: 0x%x\n", eh->ether_type & 0xFFFF); 223 } 224 #endif 225 226 return len; 227 } 228