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
EtherInit(unsigned char * myadr)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 }
100