1 /* $NetBSD: netif_of.c,v 1.14 2009/01/28 13:10:05 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 int rv; 74 75 #ifdef NETIF_DEBUG 76 printf("netif_open..."); 77 #endif 78 /* find a free socket */ 79 io = &sdesc; 80 if (io->io_netif) { 81 #ifdef NETIF_DEBUG 82 printf("device busy\n"); 83 #endif 84 errno = ENFILE; 85 return -1; 86 } 87 memset(io, 0, sizeof *io); 88 89 io->io_netif = (void *)op; 90 91 /* Put our ethernet address in io->myea */ 92 rv = OF_getprop(OF_instance_to_package(op->handle), 93 "local-mac-address", io->myea, sizeof io->myea); 94 if (rv == -1) 95 OF_getprop(OF_instance_to_package(op->handle), 96 "mac-address", io->myea, sizeof io->myea); 97 98 #ifdef NETIF_DEBUG 99 printf("OK\n"); 100 #endif 101 return 0; 102 } 103 104 void 105 netif_of_close(int fd) 106 { 107 struct iodesc *io; 108 109 #ifdef NETIF_DEBUG 110 printf("netif_close(%x)...", fd); 111 #endif 112 113 #ifdef NETIF_DEBUG 114 if (fd != 0) { 115 printf("EBADF\n"); 116 return; 117 } 118 #endif 119 120 io = &sdesc; 121 io->io_netif = NULL; 122 123 #ifdef NETIF_DEBUG 124 printf("OK\n"); 125 #endif 126 } 127 128 /* 129 * Send a packet. The ether header is already there. 130 * Return the length sent (or -1 on error). 131 */ 132 ssize_t 133 netif_put(struct iodesc *desc, void *pkt, size_t len) 134 { 135 struct of_dev *op; 136 ssize_t rv; 137 size_t sendlen; 138 139 op = (struct of_dev *)desc->io_netif; 140 141 #ifdef NETIF_DEBUG 142 { 143 struct ether_header *eh; 144 145 printf("netif_put: desc=0x%x pkt=0x%x len=%d\n", 146 (u_int)desc, (u_int)pkt, len); 147 eh = pkt; 148 printf("dst: %s ", ether_sprintf(eh->ether_dhost)); 149 printf("src: %s ", ether_sprintf(eh->ether_shost)); 150 printf("type: 0x%x\n", eh->ether_type & 0xFFFF); 151 } 152 #endif 153 154 sendlen = len; 155 if (sendlen < 60) { 156 sendlen = 60; 157 #ifdef NETIF_DEBUG 158 printf("netif_put: length padded to %d\n", sendlen); 159 #endif 160 } 161 162 if (op->dmabuf) { 163 memcpy(op->dmabuf, pkt, sendlen); 164 pkt = op->dmabuf; 165 } 166 rv = OF_write(op->handle, pkt, sendlen); 167 168 #ifdef NETIF_DEBUG 169 printf("netif_put: xmit returned %d\n", rv); 170 #endif 171 172 return rv; 173 } 174 175 /* 176 * Receive a packet, including the ether header. 177 * Return the total length received (or -1 on error). 178 */ 179 ssize_t 180 netif_get(struct iodesc *desc, void *pkt, size_t maxlen, saseconds_t timo) 181 { 182 struct of_dev *op; 183 int tick0, tmo_ms; 184 int len; 185 186 op = (struct of_dev *)desc->io_netif; 187 188 #ifdef NETIF_DEBUG 189 printf("netif_get: pkt=0x%x, maxlen=%d, tmo=%d\n", 190 (u_int)pkt, maxlen, timo); 191 #endif 192 193 tmo_ms = timo * 1000; 194 tick0 = OF_milliseconds(); 195 196 do { 197 len = OF_read(op->handle, pkt, maxlen); 198 } while ((len == -2 || len == 0) && 199 (OF_milliseconds() - tick0 < tmo_ms)); 200 201 #ifdef NETIF_DEBUG 202 printf("netif_get: received len=%d\n", len); 203 #endif 204 205 if (len < 12) 206 return -1; 207 208 #ifdef NETIF_DEBUG 209 { 210 struct ether_header *eh = pkt; 211 212 printf("dst: %s ", ether_sprintf(eh->ether_dhost)); 213 printf("src: %s ", ether_sprintf(eh->ether_shost)); 214 printf("type: 0x%x\n", eh->ether_type & 0xFFFF); 215 } 216 #endif 217 218 return len; 219 } 220 221 /* 222 * Shouldn't really be here, but is used solely for networking, so... 223 */ 224 satime_t 225 getsecs(void) 226 { 227 228 return OF_milliseconds() / 1000; 229 } 230