1 /* $NetBSD: netif_of.c,v 1.11 2006/01/27 04:01:04 uwe 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 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 "local-mac-address", io->myea, sizeof io->myea) == -1 && 93 OF_getprop(OF_instance_to_package(op->handle), 94 "mac-address", io->myea, sizeof io->myea); 95 96 #ifdef NETIF_DEBUG 97 printf("OK\n"); 98 #endif 99 return 0; 100 } 101 102 void 103 netif_of_close(int fd) 104 { 105 struct iodesc *io; 106 107 #ifdef NETIF_DEBUG 108 printf("netif_close(%x)...", fd); 109 #endif 110 111 #ifdef NETIF_DEBUG 112 if (fd != 0) { 113 printf("EBADF\n"); 114 return; 115 } 116 #endif 117 118 io = &sdesc; 119 io->io_netif = NULL; 120 121 #ifdef NETIF_DEBUG 122 printf("OK\n"); 123 #endif 124 } 125 126 /* 127 * Send a packet. The ether header is already there. 128 * Return the length sent (or -1 on error). 129 */ 130 ssize_t 131 netif_put(struct iodesc *desc, void *pkt, size_t len) 132 { 133 struct of_dev *op; 134 ssize_t rv; 135 size_t sendlen; 136 137 op = (struct of_dev *)desc->io_netif; 138 139 #ifdef NETIF_DEBUG 140 { 141 struct ether_header *eh; 142 143 printf("netif_put: desc=0x%x pkt=0x%x len=%d\n", 144 desc, pkt, len); 145 eh = pkt; 146 printf("dst: %s ", ether_sprintf(eh->ether_dhost)); 147 printf("src: %s ", ether_sprintf(eh->ether_shost)); 148 printf("type: 0x%x\n", eh->ether_type & 0xFFFF); 149 } 150 #endif 151 152 sendlen = len; 153 if (sendlen < 60) { 154 sendlen = 60; 155 #ifdef NETIF_DEBUG 156 printf("netif_put: length padded to %d\n", sendlen); 157 #endif 158 } 159 160 if (op->dmabuf) { 161 memcpy(op->dmabuf, pkt, sendlen); 162 pkt = op->dmabuf; 163 } 164 rv = OF_write(op->handle, pkt, sendlen); 165 166 #ifdef NETIF_DEBUG 167 printf("netif_put: xmit returned %d\n", rv); 168 #endif 169 170 return rv; 171 } 172 173 /* 174 * Receive a packet, including the ether header. 175 * Return the total length received (or -1 on error). 176 */ 177 ssize_t 178 netif_get(struct iodesc *desc, void *pkt, size_t maxlen, time_t timo) 179 { 180 struct of_dev *op; 181 int tick0, tmo_ms; 182 int len; 183 184 op = (struct of_dev *)desc->io_netif; 185 186 #ifdef NETIF_DEBUG 187 printf("netif_get: pkt=0x%x, maxlen=%d, tmo=%d\n", 188 pkt, maxlen, timo); 189 #endif 190 191 tmo_ms = timo * 1000; 192 tick0 = OF_milliseconds(); 193 194 do { 195 len = OF_read(op->handle, pkt, maxlen); 196 } while ((len == -2 || len == 0) && 197 (OF_milliseconds() - tick0 < tmo_ms)); 198 199 #ifdef NETIF_DEBUG 200 printf("netif_get: received len=%d\n", len); 201 #endif 202 203 if (len < 12) 204 return -1; 205 206 #ifdef NETIF_DEBUG 207 { 208 struct ether_header *eh = pkt; 209 210 printf("dst: %s ", ether_sprintf(eh->ether_dhost)); 211 printf("src: %s ", ether_sprintf(eh->ether_shost)); 212 printf("type: 0x%x\n", eh->ether_type & 0xFFFF); 213 } 214 #endif 215 216 return len; 217 } 218 219 /* 220 * Shouldn't really be here, but is used solely for networking, so... 221 */ 222 time_t 223 getsecs(void) 224 { 225 return OF_milliseconds() / 1000; 226 } 227