1 /* $NetBSD: netif_of.c,v 1.7 2009/03/18 16:00:15 cegger 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 int fd, error; 77 char addr[32]; 78 79 #ifdef NETIF_DEBUG 80 printf("netif_open..."); 81 #endif 82 /* find a free socket */ 83 io = sockets; 84 if (io->io_netif) { 85 #ifdef NETIF_DEBUG 86 printf("device busy\n"); 87 #endif 88 errno = ENFILE; 89 return -1; 90 } 91 memset(io, 0, sizeof *io); 92 93 netif_of.nif_devdata = op; 94 io->io_netif = &netif_of; 95 96 /* Put our ethernet address in io->myea */ 97 _prom_getprop(prom_instance_to_package(op->handle), 98 "mac-address", io->myea, sizeof io->myea); 99 100 #ifdef NETIF_DEBUG 101 printf("OK\n"); 102 #endif 103 return 0; 104 } 105 106 int 107 netif_close(int fd) 108 { 109 struct iodesc *io; 110 struct netif *ni; 111 112 #ifdef NETIF_DEBUG 113 printf("netif_close(%x)...", fd); 114 #endif 115 if (fd != 0) { 116 #ifdef NETIF_DEBUG 117 printf("EBADF\n"); 118 #endif 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 #ifdef NETIF_DEBUG 130 printf("OK\n"); 131 #endif 132 return 0; 133 } 134 135 /* 136 * Send a packet. The ether header is already there. 137 * Return the length sent (or -1 on error). 138 */ 139 ssize_t 140 netif_put(struct iodesc *desc, void *pkt, size_t len) 141 { 142 struct of_dev *op; 143 ssize_t rv; 144 size_t sendlen; 145 146 op = ((struct netif *)desc->io_netif)->nif_devdata; 147 148 #ifdef NETIF_DEBUG 149 { 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 = prom_write(op->handle, pkt, sendlen); 170 171 #ifdef NETIF_DEBUG 172 printf("netif_put: xmit returned %d\n", rv); 173 #endif 174 175 if (rv > len) 176 rv = len; 177 178 return rv; 179 } 180 181 /* 182 * Receive a packet, including the ether header. 183 * Return the total length received (or -1 on error). 184 */ 185 ssize_t 186 netif_get(struct iodesc *desc, void *pkt, size_t maxlen, saseconds_t timo) 187 { 188 struct of_dev *op; 189 int tick0, tmo_ms; 190 int len; 191 192 op = ((struct netif *)desc->io_netif)->nif_devdata; 193 194 #ifdef NETIF_DEBUG 195 printf("netif_get: pkt=0x%x, maxlen=%d, tmo=%d\n", 196 pkt, maxlen, timo); 197 #endif 198 199 tmo_ms = timo * 1000; 200 tick0 = prom_ticks(); 201 202 do { 203 len = prom_read(op->handle, pkt, maxlen); 204 } while ((len == -2 || len == 0) && 205 (prom_ticks() - tick0 < tmo_ms)); 206 207 #ifdef NETIF_DEBUG 208 printf("netif_get: received len=%d\n", len); 209 #endif 210 211 if (len < 12) 212 return -1; 213 214 #ifdef NETIF_DEBUG 215 { 216 struct ether_header *eh = pkt; 217 218 printf("dst: %s ", ether_sprintf(eh->ether_dhost)); 219 printf("src: %s ", ether_sprintf(eh->ether_shost)); 220 printf("type: 0x%x\n", eh->ether_type & 0xFFFF); 221 } 222 #endif 223 224 return len; 225 } 226 227 /* 228 * Shouldn't really be here, but is used solely for networking, so... 229 */ 230 satime_t 231 getsecs(void) 232 { 233 234 return prom_ticks() / 1000; 235 } 236