sys/arch/i386/stand/lib/netif/pcnet_pci.c

   1 /*      $NetBSD: pcnet_pci.c,v 1.8 2008/12/14 18:46:33 christos Exp $   */
   2
   3 /*
   4  * Copyright (c) 1996
   5  *      Matthias Drochner.  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
  30 #include <sys/types.h>
  31 #include <machine/pio.h>
  32 #include <lib/libkern/libkern.h>
  33 #include <lib/libsa/stand.h>
  34
  35 #include <libi386.h>
  36 #include <pcivar.h>
  37 #include <bootinfo.h>
  38
  39 #include "etherdrv.h"
  40 #include "lance.h"
  41
  42 int lance_rap, lance_rdp;
  43
  44 static pcihdl_t hdl;
  45
  46 u_char eth_myaddr[6];
  47
  48 extern void am7990_init(void);
  49 extern void am7990_stop(void);
  50
  51 static struct btinfo_netif bi_netif;
  52
  53 int
  54 EtherInit(unsigned char *myadr)
  55 {
  56   int iobase, pcicsr, i;
  57
  58   if (pcicheck() == -1) {
  59     printf("cannot access PCI\n");
  60     return 0;
  61   }
  62
  63   if (pcifinddev(0x1022, 0x2000, &hdl)) {
  64     printf("cannot find PCNET\n");
  65     return 0;
  66   }
  67
  68   if (pcicfgread(&hdl, 0x10, &iobase) || !(iobase & 1)) {
  69     printf("cannot map IO space\n");
  70     return 0;
  71   }
  72   iobase &= 0xfffffffc;
  73
  74   lance_rap = iobase + 0x12;
  75   lance_rdp = iobase + 0x10;
  76
  77   /* make sure it's stopped */
  78   am7990_stop();
  79
  80   /* enable bus mastering in PCI command register */
  81   if (pcicfgread(&hdl, 0x04, &pcicsr)
  82      || pcicfgwrite(&hdl, 0x04, pcicsr | 4)) {
  83     printf("cannot enable DMA\n");
  84     return 0;
  85   }
  86
  87   for (i = 0; i < 6; i++)
  88           myadr[i] = eth_myaddr[i] = inb(iobase + i);
  89
  90   am7990_init();
  91
  92   strncpy(bi_netif.ifname, "le", sizeof(bi_netif.ifname));
  93   bi_netif.bus = BI_BUS_PCI;
  94   bi_netif.addr.tag = hdl;
  95
  96   BI_ADD(&bi_netif, BTINFO_NETIF, sizeof(bi_netif));
  97
  98   return 1;
  99 }