100 lines
2.7 KiB
C
100 lines
2.7 KiB
C
/* $NetBSD: pcnet_pci.c,v 1.8 2008/12/14 18:46:33 christos Exp $ */
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/*
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* Copyright (c) 1996
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* Matthias Drochner. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include <sys/types.h>
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#include <machine/pio.h>
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#include <lib/libkern/libkern.h>
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#include <lib/libsa/stand.h>
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#include <libi386.h>
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#include <pcivar.h>
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#include <bootinfo.h>
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#include "etherdrv.h"
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#include "lance.h"
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int lance_rap, lance_rdp;
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static pcihdl_t hdl;
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u_char eth_myaddr[6];
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extern void am7990_init(void);
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extern void am7990_stop(void);
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static struct btinfo_netif bi_netif;
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int
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EtherInit(unsigned char *myadr)
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{
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int iobase, pcicsr, i;
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if (pcicheck() == -1) {
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printf("cannot access PCI\n");
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return 0;
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}
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if (pcifinddev(0x1022, 0x2000, &hdl)) {
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printf("cannot find PCNET\n");
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return 0;
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}
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if (pcicfgread(&hdl, 0x10, &iobase) || !(iobase & 1)) {
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printf("cannot map IO space\n");
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return 0;
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}
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iobase &= 0xfffffffc;
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lance_rap = iobase + 0x12;
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lance_rdp = iobase + 0x10;
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/* make sure it's stopped */
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am7990_stop();
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/* enable bus mastering in PCI command register */
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if (pcicfgread(&hdl, 0x04, &pcicsr)
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|| pcicfgwrite(&hdl, 0x04, pcicsr | 4)) {
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printf("cannot enable DMA\n");
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return 0;
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}
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for (i = 0; i < 6; i++)
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myadr[i] = eth_myaddr[i] = inb(iobase + i);
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am7990_init();
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strncpy(bi_netif.ifname, "le", sizeof(bi_netif.ifname));
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bi_netif.bus = BI_BUS_PCI;
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bi_netif.addr.tag = hdl;
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BI_ADD(&bi_netif, BTINFO_NETIF, sizeof(bi_netif));
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return 1;
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}
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