1 /* $NetBSD: netif_sun.c,v 1.12 2009/10/21 23:12:09 snj 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 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 /* 29 * The Sun PROM has a fairly general set of network drivers, 30 * so it is easiest to just replace the netif module with 31 * this adaptation to the PROM network interface. 32 */ 33 34 #include <sys/param.h> 35 #include <sys/socket.h> 36 37 #include <net/if.h> 38 #include <net/if_ether.h> 39 40 #include <netinet/in.h> 41 #include <netinet/in_systm.h> 42 43 #include <lib/libsa/stand.h> 44 #include <lib/libsa/net.h> 45 #include <lib/libsa/netif.h> 46 #include <lib/libkern/libkern.h> 47 48 #include <machine/promlib.h> 49 #include <sparc/stand/common/promdev.h> 50 51 static struct netif netif_prom; 52 53 #ifdef NETIF_DEBUG 54 int netif_debug; 55 #endif 56 57 struct iodesc sockets[SOPEN_MAX]; 58 59 struct iodesc * 60 socktodesc(int sock) 61 { 62 63 if (sock != 0) { 64 return(NULL); 65 } 66 return (sockets); 67 } 68 69 int 70 netif_open(void *machdep_hint) 71 { 72 struct promdata *pd = machdep_hint; 73 struct iodesc *io; 74 int node; 75 76 /* find a free socket */ 77 io = sockets; 78 if (io->io_netif) { 79 #ifdef DEBUG 80 printf("netif_open: device busy\n"); 81 #endif 82 errno = ENFILE; 83 return (-1); 84 } 85 memset(io, 0, sizeof(*io)); 86 87 netif_prom.nif_devdata = pd; 88 io->io_netif = &netif_prom; 89 90 /* Put our ethernet address in io->myea */ 91 switch (prom_version()) { 92 case PROM_OBP_V2: 93 case PROM_OBP_V3: 94 case PROM_OPENFIRM: 95 node = prom_instance_to_package(pd->fd); 96 break; 97 default: 98 node = 0; 99 } 100 prom_getether(node, io->myea); 101 102 return(0); 103 } 104 105 int 106 netif_close(int fd) 107 { 108 struct iodesc *io; 109 struct netif *ni; 110 111 if (fd != 0) { 112 errno = EBADF; 113 return(-1); 114 } 115 116 io = &sockets[fd]; 117 ni = io->io_netif; 118 if (ni != NULL) { 119 ni->nif_devdata = NULL; 120 io->io_netif = NULL; 121 } 122 return(0); 123 } 124 125 /* 126 * Send a packet. The ether header is already there. 127 * Return the length sent (or -1 on error). 128 */ 129 ssize_t 130 netif_put(struct iodesc *desc, void *pkt, size_t len) 131 { 132 struct promdata *pd; 133 ssize_t rv; 134 size_t sendlen; 135 136 pd = (struct promdata *)((struct netif *)desc->io_netif)->nif_devdata; 137 138 #ifdef NETIF_DEBUG 139 if (netif_debug) { 140 struct ether_header *eh; 141 142 printf("netif_put: desc=0x%x pkt=0x%x len=%d\n", 143 desc, pkt, len); 144 eh = pkt; 145 printf("dst: %s ", ether_sprintf(eh->ether_dhost)); 146 printf("src: %s ", ether_sprintf(eh->ether_shost)); 147 printf("type: 0x%x\n", eh->ether_type & 0xFFFF); 148 } 149 #endif 150 151 sendlen = len; 152 if (sendlen < 60) { 153 sendlen = 60; 154 #ifdef NETIF_DEBUG 155 printf("netif_put: length padded to %d\n", sendlen); 156 #endif 157 } 158 159 rv = (*pd->xmit)(pd, pkt, sendlen); 160 161 #ifdef NETIF_DEBUG 162 if (netif_debug) 163 printf("netif_put: xmit returned %d\n", rv); 164 #endif 165 166 return rv; 167 } 168 169 /* 170 * Receive a packet, including the ether header. 171 * Return the total length received (or -1 on error). 172 */ 173 ssize_t 174 netif_get(struct iodesc *desc, void *pkt, size_t maxlen, saseconds_t timo) 175 { 176 struct promdata *pd; 177 satime_t tick0; 178 ssize_t len; 179 180 pd = (struct promdata *)((struct netif *)desc->io_netif)->nif_devdata; 181 182 #ifdef NETIF_DEBUG 183 if (netif_debug) 184 printf("netif_get: pkt=0x%x, maxlen=%d, tmo=%d\n", 185 pkt, maxlen, timo); 186 #endif 187 188 tick0 = getsecs(); 189 190 do { 191 len = (*pd->recv)(pd, pkt, maxlen); 192 } while ((len == 0) && ((getsecs() - tick0) < timo)); 193 194 #ifdef NETIF_DEBUG 195 if (netif_debug) 196 printf("netif_get: received len=%d\n", len); 197 #endif 198 199 if (len < 12) 200 return -1; 201 202 #ifdef NETIF_DEBUG 203 if (netif_debug) { 204 struct ether_header *eh = pkt; 205 206 printf("dst: %s ", ether_sprintf(eh->ether_dhost)); 207 printf("src: %s ", ether_sprintf(eh->ether_shost)); 208 printf("type: 0x%x\n", eh->ether_type & 0xFFFF); 209 } 210 #endif 211 212 return len; 213 } 214
Indexes created Sat Sep 20 22:09:52 GMT 2025