sys/arch/sparc/stand/common/netif_sun.c

   1 /*      $NetBSD: netif_sun.c,v 1.11 2009/03/18 16:00:15 cegger 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/libsa/netif.h>
  46 #include <lib/libkern/libkern.h>
  47
  48 #include <machine/promlib.h>
  49 #include <sparc/stand/common/promdev.h>
  50
  51 static struct netif netif_prom;
  52
  53 #ifdef NETIF_DEBUG
  54 int netif_debug;
  55 #endif
  56
  57 struct iodesc sockets[SOPEN_MAX];
  58
  59 struct iodesc *
  60 socktodesc(int sock)
  61 {
  62
  63         if (sock != 0) {
  64                 return(NULL);
  65         }
  66         return (sockets);
  67 }
  68
  69 int
  70 netif_open(void *machdep_hint)
  71 {
  72         struct promdata *pd = machdep_hint;
  73         struct iodesc *io;
  74         int node;
  75
  76         /* find a free socket */
  77         io = sockets;
  78         if (io->io_netif) {
  79 #ifdef  DEBUG
  80                 printf("netif_open: device busy\n");
  81 #endif
  82                 errno = ENFILE;
  83                 return (-1);
  84         }
  85         memset(io, 0, sizeof(*io));
  86
  87         netif_prom.nif_devdata = pd;
  88         io->io_netif = &netif_prom;
  89
  90         /* Put our ethernet address in io->myea */
  91         switch (prom_version()) {
  92         case PROM_OBP_V2:
  93         case PROM_OBP_V3:
  94         case PROM_OPENFIRM:
  95                 node = prom_instance_to_package(pd->fd);
  96                 break;
  97         default:
  98                 node = 0;
  99         }
 100         prom_getether(node, io->myea);
 101
 102         return(0);
 103 }
 104
 105 int
 106 netif_close(int fd)
 107 {
 108         struct iodesc *io;
 109         struct netif *ni;
 110
 111         if (fd != 0) {
 112                 errno = EBADF;
 113                 return(-1);
 114         }
 115
 116         io = &sockets[fd];
 117         ni = io->io_netif;
 118         if (ni != NULL) {
 119                 ni->nif_devdata = NULL;
 120                 io->io_netif = NULL;
 121         }
 122         return(0);
 123 }
 124
 125 /*
 126  * Send a packet.  The ether header is already there.
 127  * Return the length sent (or -1 on error).
 128  */
 129 ssize_t
 130 netif_put(struct iodesc *desc, void *pkt, size_t len)
 131 {
 132         struct promdata *pd;
 133         ssize_t rv;
 134         size_t sendlen;
 135
 136         pd = (struct promdata *)((struct netif *)desc->io_netif)->nif_devdata;
 137
 138 #ifdef NETIF_DEBUG
 139         if (netif_debug) {
 140                 struct ether_header *eh;
 141
 142                 printf("netif_put: desc=0x%x pkt=0x%x len=%d\n",
 143                            desc, pkt, len);
 144                 eh = pkt;
 145                 printf("dst: %s ", ether_sprintf(eh->ether_dhost));
 146                 printf("src: %s ", ether_sprintf(eh->ether_shost));
 147                 printf("type: 0x%x\n", eh->ether_type & 0xFFFF);
 148         }
 149 #endif
 150
 151         sendlen = len;
 152         if (sendlen < 60) {
 153                 sendlen = 60;
 154 #ifdef NETIF_DEBUG
 155                 printf("netif_put: length padded to %d\n", sendlen);
 156 #endif
 157         }
 158
 159         rv = (*pd->xmit)(pd, pkt, sendlen);
 160
 161 #ifdef NETIF_DEBUG
 162         if (netif_debug)
 163                 printf("netif_put: xmit returned %d\n", rv);
 164 #endif
 165
 166         return rv;
 167 }
 168
 169 /*
 170  * Receive a packet, including the ether header.
 171  * Return the total length received (or -1 on error).
 172  */
 173 ssize_t
 174 netif_get(struct iodesc *desc, void *pkt, size_t maxlen, saseconds_t timo)
 175 {
 176         struct promdata *pd;
 177         satime_t tick0;
 178         ssize_t len;
 179
 180         pd = (struct promdata *)((struct netif *)desc->io_netif)->nif_devdata;
 181
 182 #ifdef NETIF_DEBUG
 183         if (netif_debug)
 184                 printf("netif_get: pkt=0x%x, maxlen=%d, tmo=%d\n",
 185                            pkt, maxlen, timo);
 186 #endif
 187
 188         tick0 = getsecs();
 189
 190         do {
 191                 len = (*pd->recv)(pd, pkt, maxlen);
 192         } while ((len == 0) && ((getsecs() - tick0) < timo));
 193
 194 #ifdef NETIF_DEBUG
 195         if (netif_debug)
 196                 printf("netif_get: received len=%d\n", len);
 197 #endif
 198
 199         if (len < 12)
 200                 return -1;
 201
 202 #ifdef NETIF_DEBUG
 203         if (netif_debug) {
 204                 struct ether_header *eh = pkt;
 205
 206                 printf("dst: %s ", ether_sprintf(eh->ether_dhost));
 207                 printf("src: %s ", ether_sprintf(eh->ether_shost));
 208                 printf("type: 0x%x\n", eh->ether_type & 0xFFFF);
 209         }
 210 #endif
 211
 212         return len;
 213 }