sys/arch/sandpoint/stand/netboot/nif.c

   1 /* $NetBSD: nif.c,v 1.10 2009/03/14 15:36:13 dsl Exp $ */
   2
   3 /*-
   4  * Copyright (c) 2007 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Tohru Nishimura.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #include <sys/param.h>
  33
  34 #include <netinet/in.h>
  35 #include <netinet/in_systm.h>
  36
  37 #include <lib/libsa/stand.h>
  38 #include <lib/libsa/net.h>
  39
  40 #include "globals.h"
  41
  42 struct nifdv {
  43         char *name;
  44         int (*match)(unsigned, void *);
  45         void *(*init)(unsigned, void *);
  46         int (*send)(void *, char *, unsigned);
  47         int (*recv)(void *, char *, unsigned, unsigned);
  48         int (*halt)(void *, int);
  49         void *priv;
  50 };
  51
  52 static struct iodesc netdesc;
  53
  54 static struct nifdv vnifdv[] = {
  55         { "fxp", fxp_match, fxp_init, fxp_send, fxp_recv },
  56         { "tlp", tlp_match, tlp_init, tlp_send, tlp_recv },
  57         { "re",  rge_match, rge_init, rge_send, rge_recv },
  58 };
  59 static int nnifdv = sizeof(vnifdv)/sizeof(vnifdv[0]);
  60
  61 int
  62 netif_init(unsigned tag)
  63 {
  64         struct iodesc *s;
  65         struct nifdv *dv;
  66         int n;
  67         uint8_t enaddr[6];
  68         extern uint8_t en[6];
  69         extern char rootdev[4];
  70
  71         for (n = 0; n < nnifdv; n++) {
  72                 dv = &vnifdv[n];
  73                 if ((*dv->match)(tag, NULL) > 0)
  74                         goto found;
  75         }
  76         return 0;
  77   found:
  78         dv->priv = (*dv->init)(tag, enaddr);
  79         s = &netdesc;
  80         s->io_netif = dv;
  81         memcpy(s->myea, enaddr, sizeof(s->myea));
  82         memcpy(en, enaddr, sizeof(en));
  83         snprintf(rootdev, sizeof(rootdev), "%s", dv->name);
  84         return 1;
  85 }
  86
  87 int
  88 netif_open(void *cookie)
  89 {
  90         /* single action */
  91         return 0;
  92 }
  93
  94 int
  95 netif_close(int sock)
  96 {
  97         /* nothing to do for the HW */
  98         return 0;
  99 }
 100
 101 /*
 102  * Send a packet.  The ether header is already there.
 103  * Return the length sent (or -1 on error).
 104  */
 105 ssize_t
 106 netif_put(struct iodesc *desc, void *pkt, size_t len)
 107 {
 108         struct nifdv *dv = desc->io_netif;
 109
 110         return (*dv->send)(dv->priv, pkt, len);
 111 }
 112
 113 /*
 114  * Receive a packet, including the ether header.
 115  * Return the total length received (or -1 on error).
 116  */
 117 ssize_t
 118 netif_get(struct iodesc *desc, void *pkt, size_t maxlen, saseconds_t timo)
 119 {
 120         struct nifdv *dv = desc->io_netif;
 121         int len;
 122
 123         len = (*dv->recv)(dv->priv, pkt, maxlen, timo);
 124         if (len == -1)
 125                 printf("timeout\n");
 126         return len;
 127 }
 128
 129 struct iodesc *
 130 socktodesc(int num)
 131 {
 132
 133         return (num == 0) ? &netdesc : NULL;
 134 }