if_lc_isa.c revision 1.10 
1/*	$NetBSD: if_lc_isa.c,v 1.10 2001/06/13 10:46:03 wiz Exp $ */
2
3/*-
4 * Copyright (c) 1994, 1995, 1997 Matt Thomas <matt@3am-software.com>
5 * 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. The name of the author may not be used to endorse or promote products
13 *    derived from this software without specific prior written permission
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27/*
28 * DEC EtherWORKS 3 Ethernet Controllers
29 *
30 * Written by Matt Thomas
31 *
32 *   This driver supports the LEMAC (DE203, DE204, and DE205) cards.
33 */
34
35#include "opt_inet.h"
36#include "opt_ns.h"
37#include "bpfilter.h"
38
39#include <sys/param.h>
40#include <sys/systm.h>
41#include <sys/mbuf.h>
42#include <sys/socket.h>
43#include <sys/ioctl.h>
44#include <sys/errno.h>
45#include <sys/syslog.h>
46#include <sys/select.h>
47#include <sys/device.h>
48#include <sys/queue.h>
49
50#include <net/if.h>
51#include <net/if_dl.h>
52#include <net/if_ether.h>
53#include <net/if_media.h>
54
55
56#ifdef INET
57#include <netinet/in.h>
58#include <netinet/in_systm.h>
59#include <netinet/in_var.h>
60#include <netinet/ip.h>
61#include <netinet/if_inarp.h>
62#endif
63
64#ifdef NS
65#include <netns/ns.h>
66#include <netns/ns_if.h>
67#endif
68
69#if NBPFILTER > 0
70#include <net/bpf.h>
71#include <net/bpfdesc.h>
72#endif
73
74#include <machine/cpu.h>
75#include <machine/bus.h>
76#include <machine/intr.h>
77
78#include <dev/ic/lemacreg.h>
79#include <dev/ic/lemacvar.h>
80
81#include <dev/isa/isavar.h>
82
83extern struct cfdriver lc_cd;
84
85static int lemac_isa_find __P((lemac_softc_t *, struct isa_attach_args *,
86    int));
87static int lemac_isa_probe __P((struct device *, struct cfdata *, void *));
88static void lemac_isa_attach __P((struct device *, struct device *, void *));
89
90struct cfattach lc_isa_ca = {
91	sizeof(lemac_softc_t), lemac_isa_probe, lemac_isa_attach
92};
93
94static int
95lemac_isa_find(sc, ia, attach)
96	lemac_softc_t *sc;
97	struct isa_attach_args *ia;
98	int attach;
99{
100	bus_addr_t maddr;
101	bus_addr_t msize;
102	int rv = 0, irq;
103
104	/*
105	 * Disallow wildcarded i/o addresses.
106	 */
107	if (ia->ia_iobase == IOBASEUNK)
108		return 0;
109
110	/*
111	 * Make sure this is a valid LEMAC address.
112	 */
113	if (ia->ia_iobase & (LEMAC_IOSIZE - 1))
114		return 0;
115
116	sc->sc_iot = ia->ia_iot;
117
118	/*
119	 * Map the LEMAC's port space for the probe sequence.
120	 */
121	ia->ia_iosize = LEMAC_IOSIZE;
122
123	if (bus_space_map(sc->sc_iot, ia->ia_iobase, ia->ia_iosize, 0,
124	    &sc->sc_ioh)) {
125		if (attach)
126			printf(": can't map i/o space\n");
127		return 0;
128	}
129
130	/*
131	 * Read the Ethernet address from the EEPROM.
132	 * It must start with one of the DEC OUIs and pass the
133	 * DEC ethernet checksum test.
134	 */
135	if (lemac_port_check(sc->sc_iot, sc->sc_ioh) == 0)
136		goto outio;
137
138	/*
139	 * Get information about memory space and attempt to map it.
140	 */
141	lemac_info_get(sc->sc_iot, sc->sc_ioh, &maddr, &msize, &irq);
142
143	if (ia->ia_maddr != maddr && ia->ia_maddr != MADDRUNK)
144		goto outio;
145
146	sc->sc_memt = ia->ia_memt;
147	if (bus_space_map(ia->ia_memt, maddr, msize, 0, &sc->sc_memh)) {
148		if (attach)
149			printf(": can't map mem space\n");
150		goto outio;
151	}
152
153
154	/*
155	 * Double-check IRQ configuration.
156	 */
157	if (ia->ia_irq != irq && ia->ia_irq != IRQUNK)
158		printf("%s: overriding IRQ %d to %d\n", sc->sc_dv.dv_xname,
159		       ia->ia_irq, irq);
160
161	if (attach) {
162		sc->sc_ats = shutdownhook_establish(lemac_shutdown, sc);
163		if (sc->sc_ats == NULL)
164			printf("\n%s: warning: can't establish shutdown hook\n",
165			    sc->sc_dv.dv_xname);
166
167		lemac_ifattach(sc);
168
169		sc->sc_ih = isa_intr_establish(ia->ia_ic, irq, IST_EDGE,
170		    IPL_NET, lemac_intr, sc);
171	}
172
173	/*
174	 * I guess we've found one.
175	 */
176	rv = 1;
177
178	ia->ia_maddr = maddr;
179	ia->ia_msize = msize;
180	ia->ia_irq = irq;
181
182	if (rv == 0 || !attach)
183		bus_space_unmap(sc->sc_memt, sc->sc_memh, msize);
184outio:
185	if (rv == 0 || !attach)
186		bus_space_unmap(sc->sc_iot, sc->sc_ioh, LEMAC_IOSIZE);
187	return rv;
188}
189
190static int
191lemac_isa_probe(parent, match, aux)
192	struct device *parent;
193	struct cfdata *match;
194	void *aux;
195{
196	struct isa_attach_args *ia = aux;
197	struct cfdata *cf = match;
198	lemac_softc_t sc;
199	(void)sprintf(sc.sc_dv.dv_xname, "%s%d", lc_cd.cd_name, cf->cf_unit);
200
201	return lemac_isa_find(&sc, ia, 0);
202}
203
204static void
205lemac_isa_attach(parent, self, aux)
206	struct device *parent;
207	struct device *self;
208	void *aux;
209{
210	lemac_softc_t *sc = (void *)self;
211	struct isa_attach_args *ia = aux;
212
213	(void) lemac_isa_find(sc, ia, 1);
214}
215