minix/sys/arch/i386/stand/lib/netif/pcnet_pci.c
2012-02-09 18:48:13 +01:00

99 lines
2.7 KiB
C

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