1 /* $NetBSD: netif_sun.c,v 1.9 2006/07/13 20:03:34 uwe 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(int sock) 66 { 67 68 if (sock != 0) { 69 return(NULL); 70 } 71 return (sockets); 72 } 73 74 int 75 netif_open(void *machdep_hint) 76 { 77 struct promdata *pd = machdep_hint; 78 struct iodesc *io; 79 int node; 80 81 /* find a free socket */ 82 io = sockets; 83 if (io->io_netif) { 84 #ifdef DEBUG 85 printf("netif_open: device busy\n"); 86 #endif 87 errno = ENFILE; 88 return (-1); 89 } 90 bzero(io, sizeof(*io)); 91 92 netif_prom.nif_devdata = pd; 93 io->io_netif = &netif_prom; 94 95 /* Put our ethernet address in io->myea */ 96 switch (prom_version()) { 97 case PROM_OBP_V2: 98 case PROM_OBP_V3: 99 case PROM_OPENFIRM: 100 node = prom_instance_to_package(pd->fd); 101 break; 102 default: 103 node = 0; 104 } 105 prom_getether(node, io->myea); 106 107 return(0); 108 } 109 110 int 111 netif_close(int fd) 112 { 113 struct iodesc *io; 114 struct netif *ni; 115 116 if (fd != 0) { 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 return(0); 128 } 129 130 /* 131 * Send a packet. The ether header is already there. 132 * Return the length sent (or -1 on error). 133 */ 134 ssize_t 135 netif_put(struct iodesc *desc, void *pkt, size_t len) 136 { 137 struct promdata *pd; 138 ssize_t rv; 139 size_t sendlen; 140 141 pd = (struct promdata *)((struct netif *)desc->io_netif)->nif_devdata; 142 143 #ifdef NETIF_DEBUG 144 if (netif_debug) { 145 struct ether_header *eh; 146 147 printf("netif_put: desc=0x%x pkt=0x%x len=%d\n", 148 desc, pkt, len); 149 eh = pkt; 150 printf("dst: %s ", ether_sprintf(eh->ether_dhost)); 151 printf("src: %s ", ether_sprintf(eh->ether_shost)); 152 printf("type: 0x%x\n", eh->ether_type & 0xFFFF); 153 } 154 #endif 155 156 sendlen = len; 157 if (sendlen < 60) { 158 sendlen = 60; 159 #ifdef NETIF_DEBUG 160 printf("netif_put: length padded to %d\n", sendlen); 161 #endif 162 } 163 164 rv = (*pd->xmit)(pd, pkt, sendlen); 165 166 #ifdef NETIF_DEBUG 167 if (netif_debug) 168 printf("netif_put: xmit returned %d\n", rv); 169 #endif 170 171 return rv; 172 } 173 174 /* 175 * Receive a packet, including the ether header. 176 * Return the total length received (or -1 on error). 177 */ 178 ssize_t 179 netif_get(struct iodesc *desc, void *pkt, size_t maxlen, time_t timo) 180 { 181 struct promdata *pd; 182 int tick0; 183 ssize_t len; 184 185 pd = (struct promdata *)((struct netif *)desc->io_netif)->nif_devdata; 186 187 #ifdef NETIF_DEBUG 188 if (netif_debug) 189 printf("netif_get: pkt=0x%x, maxlen=%d, tmo=%d\n", 190 pkt, maxlen, timo); 191 #endif 192 193 tick0 = getsecs(); 194 195 do { 196 len = (*pd->recv)(pd, pkt, maxlen); 197 } while ((len == 0) && ((getsecs() - tick0) < timo)); 198 199 #ifdef NETIF_DEBUG 200 if (netif_debug) 201 printf("netif_get: received len=%d\n", len); 202 #endif 203 204 if (len < 12) 205 return -1; 206 207 #ifdef NETIF_DEBUG 208 if (netif_debug) { 209 struct ether_header *eh = pkt; 210 211 printf("dst: %s ", ether_sprintf(eh->ether_dhost)); 212 printf("src: %s ", ether_sprintf(eh->ether_shost)); 213 printf("type: 0x%x\n", eh->ether_type & 0xFFFF); 214 } 215 #endif 216 217 return len; 218 } 219