1 /* $NetBSD: netif_of.c,v 1.5 2009/01/12 11:32:44 tsutsui 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 54 #include "ofdev.h" 55 #include "openfirm.h" 56 57 #include "netif_of.h" 58 59 static struct iodesc sdesc; 60 61 struct iodesc * 62 socktodesc(int sock) 63 { 64 if (sock != 0) 65 return NULL; 66 return &sdesc; 67 } 68 69 int 70 netif_of_open(struct of_dev *op) 71 { 72 struct iodesc *io; 73 74 #ifdef NETIF_DEBUG 75 printf("netif_open..."); 76 #endif 77 /* find a free socket */ 78 io = &sdesc; 79 if (io->io_netif) { 80 #ifdef NETIF_DEBUG 81 printf("device busy\n"); 82 #endif 83 errno = ENFILE; 84 return -1; 85 } 86 (void)memset(io, 0, sizeof *io); 87 88 io->io_netif = (void *)op; 89 90 /* Put our ethernet address in io->myea */ 91 OF_getprop(OF_instance_to_package(op->handle), 92 "mac-address", io->myea, sizeof io->myea); 93 94 #ifdef NETIF_DEBUG 95 printf("OK\n"); 96 #endif 97 return 0; 98 } 99 100 void 101 netif_of_close(int fd) 102 { 103 struct iodesc *io; 104 105 #ifdef NETIF_DEBUG 106 printf("netif_close(%x)...", fd); 107 #endif 108 109 #ifdef NETIF_DEBUG 110 if (fd != 0) { 111 printf("EBADF\n"); 112 return; 113 } 114 #endif 115 116 io = &sdesc; 117 io->io_netif = NULL; 118 119 #ifdef NETIF_DEBUG 120 printf("OK\n"); 121 #endif 122 } 123 124 /* 125 * Send a packet. The ether header is already there. 126 * Return the length sent (or -1 on error). 127 */ 128 ssize_t 129 netif_put(struct iodesc *desc, void *pkt, size_t len) 130 { 131 struct of_dev *op; 132 ssize_t rv; 133 size_t sendlen; 134 135 op = (struct of_dev *)desc->io_netif; 136 137 #ifdef NETIF_DEBUG 138 { 139 struct ether_header *eh; 140 141 printf("netif_put: desc=0x%x pkt=0x%x len=%d\n", 142 desc, pkt, len); 143 eh = pkt; 144 printf("dst: %s ", ether_sprintf(eh->ether_dhost)); 145 printf("src: %s ", ether_sprintf(eh->ether_shost)); 146 printf("type: 0x%x\n", eh->ether_type & 0xFFFF); 147 } 148 #endif 149 150 sendlen = len; 151 if (sendlen < 60) { 152 sendlen = 60; 153 #ifdef NETIF_DEBUG 154 printf("netif_put: length padded to %d\n", sendlen); 155 #endif 156 } 157 158 rv = OF_write(op->handle, pkt, sendlen); 159 160 #ifdef NETIF_DEBUG 161 printf("netif_put: xmit returned %d\n", rv); 162 #endif 163 164 return rv; 165 } 166 167 /* 168 * Receive a packet, including the ether header. 169 * Return the total length received (or -1 on error). 170 */ 171 ssize_t 172 netif_get(struct iodesc *desc, void *pkt, size_t maxlen, saseconds_t timo) 173 { 174 struct of_dev *op; 175 int tick0, tmo_ms; 176 int len; 177 178 op = (struct of_dev *)desc->io_netif; 179 180 #ifdef NETIF_DEBUG 181 printf("netif_get: pkt=0x%x, maxlen=%d, tmo=%d\n", 182 pkt, maxlen, timo); 183 #endif 184 185 tmo_ms = timo * 1000; 186 tick0 = OF_milliseconds(); 187 188 do { 189 len = OF_read(op->handle, pkt, maxlen); 190 } while ((len == -2 || len == 0) && 191 (OF_milliseconds() - tick0 < tmo_ms)); 192 193 #ifdef NETIF_DEBUG 194 printf("netif_get: received len=%d\n", len); 195 #endif 196 197 if (len < 12) 198 return -1; 199 200 #ifdef NETIF_DEBUG 201 { 202 struct ether_header *eh = pkt; 203 204 printf("dst: %s ", ether_sprintf(eh->ether_dhost)); 205 printf("src: %s ", ether_sprintf(eh->ether_shost)); 206 printf("type: 0x%x\n", eh->ether_type & 0xFFFF); 207 } 208 #endif 209 210 return len; 211 } 212 213 /* 214 * Shouldn't really be here, but is used solely for networking, so... 215 */ 216 satime_t 217 getsecs(void) 218 { 219 return OF_milliseconds() / 1000; 220 } 221
Indexes created Sat Sep 20 22:09:52 GMT 2025