1/* $NetBSD: netif_of.c,v 1.8 2011/05/21 15:50:42 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#include <lib/libsa/netif.h> 54 55#include <machine/promlib.h> 56 57#include "ofdev.h" 58 59static struct netif netif_of; 60 61struct iodesc sockets[SOPEN_MAX]; 62 63struct iodesc * 64socktodesc(int sock) 65{ 66 if (sock != 0) 67 return NULL; 68 return sockets; 69} 70 71int 72netif_open(void *machdep_hint) 73{ 74 struct of_dev *op = machdep_hint; 75 struct iodesc *io; 76 77#ifdef NETIF_DEBUG 78 printf("netif_open..."); 79#endif 80 /* find a free socket */ 81 io = sockets; 82 if (io->io_netif) { 83#ifdef NETIF_DEBUG 84 printf("device busy\n"); 85#endif 86 errno = ENFILE; 87 return -1; 88 } 89 memset(io, 0, sizeof *io); 90 91 netif_of.nif_devdata = op; 92 io->io_netif = &netif_of; 93 94 /* Put our ethernet address in io->myea */ 95 _prom_getprop(prom_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 104int 105netif_close(int fd) 106{ 107 struct iodesc *io; 108 struct netif *ni; 109 110#ifdef NETIF_DEBUG 111 printf("netif_close(%x)...", fd); 112#endif 113 if (fd != 0) { 114#ifdef NETIF_DEBUG 115 printf("EBADF\n"); 116#endif 117 errno = EBADF; 118 return -1; 119 } 120 121 io = &sockets[fd]; 122 ni = io->io_netif; 123 if (ni != NULL) { 124 ni->nif_devdata = NULL; 125 io->io_netif = NULL; 126 } 127#ifdef NETIF_DEBUG 128 printf("OK\n"); 129#endif 130 return 0; 131} 132 133/* 134 * Send a packet. The ether header is already there. 135 * Return the length sent (or -1 on error). 136 */ 137ssize_t 138netif_put(struct iodesc *desc, void *pkt, size_t len) 139{ 140 struct of_dev *op; 141 ssize_t rv; 142 size_t sendlen; 143 144 op = ((struct netif *)desc->io_netif)->nif_devdata; 145 146#ifdef NETIF_DEBUG 147 { 148 struct ether_header *eh; 149 150 printf("netif_put: desc=%p pkt=%p len=%zu\n", 151 desc, pkt, len); 152 eh = pkt; 153 printf("dst: %s ", ether_sprintf(eh->ether_dhost)); 154 printf("src: %s ", ether_sprintf(eh->ether_shost)); 155 printf("type: 0x%x\n", eh->ether_type & 0xFFFF); 156 } 157#endif 158 159 sendlen = len; 160 if (sendlen < 60) { 161 sendlen = 60; 162#ifdef NETIF_DEBUG 163 printf("netif_put: length padded to %zu\n", sendlen); 164#endif 165 } 166 167 rv = prom_write(op->handle, pkt, sendlen); 168 169#ifdef NETIF_DEBUG 170 printf("netif_put: xmit returned %zd\n", rv); 171#endif 172 173 if (rv > len) 174 rv = len; 175 176 return rv; 177} 178 179/* 180 * Receive a packet, including the ether header. 181 * Return the total length received (or -1 on error). 182 */ 183ssize_t 184netif_get(struct iodesc *desc, void *pkt, size_t maxlen, saseconds_t timo) 185{ 186 struct of_dev *op; 187 int tick0, tmo_ms; 188 int len; 189 190 op = ((struct netif *)desc->io_netif)->nif_devdata; 191 192#ifdef NETIF_DEBUG 193 printf("netif_get: pkt=%p, maxlen=%zu, tmo=%d\n", 194 pkt, maxlen, timo); 195#endif 196 197 tmo_ms = timo * 1000; 198 tick0 = prom_ticks(); 199 200 do { 201 len = prom_read(op->handle, pkt, maxlen); 202 } while ((len == -2 || len == 0) && 203 (prom_ticks() - tick0 < tmo_ms)); 204 205#ifdef NETIF_DEBUG 206 printf("netif_get: received len=%d\n", len); 207#endif 208 209 if (len < 12) 210 return -1; 211 212#ifdef NETIF_DEBUG 213 { 214 struct ether_header *eh = pkt; 215 216 printf("dst: %s ", ether_sprintf(eh->ether_dhost)); 217 printf("src: %s ", ether_sprintf(eh->ether_shost)); 218 printf("type: 0x%x\n", eh->ether_type & 0xFFFF); 219 } 220#endif 221 222 return len; 223} 224 225/* 226 * Shouldn't really be here, but is used solely for networking, so... 227 */ 228satime_t 229getsecs(void) 230{ 231 232 return prom_ticks() / 1000; 233} 234