sys/arch/newsmips/stand/boot/netif_news.c

   1 /*      $NetBSD: netif_news.c,v 1.7 2009/01/12 11:32:44 tsutsui Exp $   */
   2
   3 /*
   4  * Copyright (c) 1995 Gordon W. Ross
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26  */
  27
  28 /*
  29  * The Sun PROM has a fairly general set of network drivers,
  30  * so it is easiest to just replace the netif module with
  31  * this adaptation to the PROM network interface.
  32  */
  33
  34 #include <sys/param.h>
  35 #include <sys/socket.h>
  36
  37 #include <net/if.h>
  38 #include <net/if_ether.h>
  39
  40 #include <netinet/in.h>
  41 #include <netinet/in_systm.h>
  42
  43 #include <lib/libsa/stand.h>
  44 #include <lib/libsa/net.h>
  45 #include <lib/libkern/libkern.h>
  46
  47 #include <machine/apcall.h>
  48 #include <promdev.h>
  49
  50 #include "netif_news.h"
  51
  52 #ifdef NETIF_DEBUG
  53 int netif_debug;
  54 #endif
  55
  56 static struct iodesc sdesc;
  57
  58 struct iodesc *
  59 socktodesc(int sock)
  60 {
  61         if (sock != 0) {
  62                 return NULL;
  63         }
  64         return &sdesc;
  65 }
  66
  67 int
  68 netif_news_open(struct romdev *pd)
  69 {
  70         struct iodesc *io;
  71
  72         /* find a free socket */
  73         io = &sdesc;
  74         if (io->io_netif) {
  75 #ifdef  DEBUG
  76                 printf("netif_open: device busy\n");
  77 #endif
  78                 errno = ENFILE;
  79                 return -1;
  80         }
  81         memset(io, 0, sizeof(*io));
  82
  83         io->io_netif = pd;
  84
  85         /* Put our ethernet address in io->myea */
  86         prom_getether(pd, io->myea);
  87
  88         return 0;
  89 }
  90
  91 void
  92 netif_news_close(int fd)
  93 {
  94         struct iodesc *io;
  95
  96         io = &sdesc;
  97         io->io_netif = NULL;
  98 }
  99
 100 /*
 101  * Send a packet.  The ether header is already there.
 102  * Return the length sent (or -1 on error).
 103  */
 104 ssize_t
 105 netif_put(struct iodesc *desc, void *pkt, size_t len)
 106 {
 107         struct romdev *pd;
 108         ssize_t rv;
 109         size_t sendlen;
 110
 111         pd = (struct romdev *)desc->io_netif;
 112
 113 #ifdef NETIF_DEBUG
 114         if (netif_debug) {
 115                 struct ether_header *eh;
 116
 117                 printf("netif_put: desc=0x%x pkt=0x%x len=%d\n",
 118                            desc, pkt, len);
 119                 eh = pkt;
 120                 printf("dst: %s ", ether_sprintf(eh->ether_dhost));
 121                 printf("src: %s ", ether_sprintf(eh->ether_shost));
 122                 printf("type: 0x%x\n", eh->ether_type & 0xFFFF);
 123         }
 124 #endif
 125
 126         sendlen = len;
 127         if (sendlen < 60) {
 128                 sendlen = 60;
 129 #ifdef NETIF_DEBUG
 130                 printf("netif_put: length padded to %d\n", sendlen);
 131 #endif
 132         }
 133
 134         rv = apcall_write(pd->fd, pkt, sendlen);
 135
 136 #ifdef NETIF_DEBUG
 137         if (netif_debug)
 138                 printf("netif_put: xmit returned %d\n", rv);
 139 #endif
 140
 141         return rv;
 142 }
 143
 144 /*
 145  * Receive a packet, including the ether header.
 146  * Return the total length received (or -1 on error).
 147  */
 148 ssize_t
 149 netif_get(struct iodesc *desc, void *pkt, size_t maxlen, saseconds_t timo)
 150 {
 151         struct romdev *pd;
 152         satime_t tick0;
 153         ssize_t len;
 154
 155         pd = (struct romdev *)desc->io_netif;
 156
 157 #ifdef NETIF_DEBUG
 158         if (netif_debug)
 159                 printf("netif_get: pkt=0x%x, maxlen=%d, tmo=%d\n",
 160                            pkt, maxlen, timo);
 161 #endif
 162
 163         tick0 = getsecs();
 164
 165         do {
 166                 len = apcall_read(pd->fd, pkt, maxlen);
 167         } while ((len == 0) && ((getsecs() - tick0) < timo));
 168
 169 #ifdef NETIF_DEBUG
 170         if (netif_debug)
 171                 printf("netif_get: received len=%d\n", len);
 172 #endif
 173
 174         if (len < 12)
 175                 return -1;
 176
 177 #ifdef NETIF_DEBUG
 178         if (netif_debug) {
 179                 struct ether_header *eh = pkt;
 180
 181                 printf("dst: %s ", ether_sprintf(eh->ether_dhost));
 182                 printf("src: %s ", ether_sprintf(eh->ether_shost));
 183                 printf("type: 0x%x\n", eh->ether_type & 0xFFFF);
 184         }
 185 #endif
 186
 187         return len;
 188 }
 189
 190 int
 191 prom_getether(struct romdev *pd, u_char *ea)
 192 {
 193
 194         if (apcall_ioctl(pd->fd, APIOCGIFHWADDR, ea));
 195                 return -1;
 196
 197 #ifdef BOOT_DEBUG
 198         printf("hardware address %s\n", ether_sprintf(ea));
 199 #endif
 200
 201         return 0;
 202 }
 203
 204 satime_t
 205 getsecs(void)
 206 {
 207         u_int t[2];
 208
 209         apcall_gettimeofday(t);         /* time = t[0](s) + t[1](ns) */
 210         return t[0];
 211 }