if_lc_isa.c revision 1.28 
1/*	$NetBSD: if_lc_isa.c,v 1.28 2007/10/19 12:00:18 ad 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 <sys/cdefs.h>
36__KERNEL_RCSID(0, "$NetBSD: if_lc_isa.c,v 1.28 2007/10/19 12:00:18 ad Exp $");
37
38#include <sys/param.h>
39#include <sys/systm.h>
40#include <sys/mbuf.h>
41#include <sys/socket.h>
42#include <sys/ioctl.h>
43#include <sys/errno.h>
44#include <sys/syslog.h>
45#include <sys/select.h>
46#include <sys/device.h>
47#include <sys/queue.h>
48
49#include <net/if.h>
50#include <net/if_dl.h>
51#include <net/if_ether.h>
52#include <net/if_media.h>
53
54#include <sys/cpu.h>
55#include <sys/bus.h>
56#include <sys/intr.h>
57
58#include <dev/ic/lemacreg.h>
59#include <dev/ic/lemacvar.h>
60
61#include <dev/isa/isavar.h>
62
63extern struct cfdriver lc_cd;
64
65static int lemac_isa_find(lemac_softc_t *, struct isa_attach_args *, int);
66static int lemac_isa_probe(struct device *, struct cfdata *, void *);
67static void lemac_isa_attach(struct device *, struct device *, void *);
68
69CFATTACH_DECL(lc_isa, sizeof(lemac_softc_t),
70    lemac_isa_probe, lemac_isa_attach, NULL, NULL);
71
72static int
73lemac_isa_find(sc, ia, attach)
74	lemac_softc_t *sc;
75	struct isa_attach_args *ia;
76	int attach;
77{
78	bus_addr_t maddr;
79	bus_addr_t msiz;
80	int rv = 0, irq;
81
82	if (ia->ia_nio < 1)
83		return (0);
84	if (ia->ia_niomem < 1)
85		return (0);
86	if (ia->ia_nirq < 1)
87		return (0);
88
89	if (ISA_DIRECT_CONFIG(ia))
90		return (0);
91
92	/*
93	 * Disallow wildcarded i/o addresses.
94	 */
95	if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT)
96		return 0;
97
98	/*
99	 * Make sure this is a valid LEMAC address.
100	 */
101	if (ia->ia_io[0].ir_addr & (LEMAC_IOSIZE - 1))
102		return 0;
103
104	sc->sc_iot = ia->ia_iot;
105
106	if (bus_space_map(sc->sc_iot, ia->ia_io[0].ir_addr, LEMAC_IOSIZE, 0,
107	    &sc->sc_ioh)) {
108		if (attach)
109			printf(": can't map i/o space\n");
110		return 0;
111	}
112
113	/*
114	 * Read the Ethernet address from the EEPROM.
115	 * It must start with one of the DEC OUIs and pass the
116	 * DEC ethernet checksum test.
117	 */
118	if (lemac_port_check(sc->sc_iot, sc->sc_ioh) == 0)
119		goto outio;
120
121	/*
122	 * Get information about memory space and attempt to map it.
123	 */
124	lemac_info_get(sc->sc_iot, sc->sc_ioh, &maddr, &msiz, &irq);
125
126	if (ia->ia_iomem[0].ir_addr != ISA_UNKNOWN_IOMEM &&
127	    ia->ia_iomem[0].ir_addr != maddr)
128		goto outio;
129
130	if (attach) {
131		if (msiz == 0) {
132			printf(": memory configuration is invalid\n");
133			goto outio;
134		}
135
136		sc->sc_memt = ia->ia_memt;
137		if (bus_space_map(ia->ia_memt, maddr, msiz, 0, &sc->sc_memh)) {
138			printf(": can't map mem space\n");
139			goto outio;
140		}
141	}
142
143	/*
144	 * Double-check IRQ configuration.
145	 */
146	if (ia->ia_irq[0].ir_irq != ISA_UNKNOWN_IRQ &&
147	    ia->ia_irq[0].ir_irq != irq)
148		printf("%s: overriding IRQ %d to %d\n", sc->sc_dv.dv_xname,
149		       ia->ia_irq[0].ir_irq, irq);
150
151	if (attach) {
152		sc->sc_ats = shutdownhook_establish(lemac_shutdown, sc);
153		if (sc->sc_ats == NULL)
154			printf("\n%s: warning: can't establish shutdown hook\n",
155			    sc->sc_dv.dv_xname);
156
157		lemac_ifattach(sc);
158
159		sc->sc_ih = isa_intr_establish(ia->ia_ic, irq, IST_EDGE,
160		    IPL_NET, lemac_intr, sc);
161	}
162
163	/*
164	 * I guess we've found one.
165	 */
166	rv = 1;
167
168	ia->ia_nio = 1;
169	ia->ia_io[0].ir_size = LEMAC_IOSIZE;
170
171	ia->ia_niomem = 1;
172	ia->ia_iomem[0].ir_addr = maddr;
173	ia->ia_iomem[0].ir_size = msiz;
174
175	ia->ia_nirq = 1;
176	ia->ia_irq[0].ir_irq = irq;
177
178	ia->ia_ndrq = 0;
179
180outio:
181	if (rv == 0 || !attach)
182		bus_space_unmap(sc->sc_iot, sc->sc_ioh, LEMAC_IOSIZE);
183	return rv;
184}
185
186static int
187lemac_isa_probe(struct device *parent, struct cfdata *match, void *aux)
188{
189	struct isa_attach_args *ia = aux;
190	struct cfdata *cf = match;
191	lemac_softc_t sc;
192	snprintf(sc.sc_dv.dv_xname, sizeof(sc.sc_dv.dv_xname), "%s%d",
193	    lc_cd.cd_name, cf->cf_unit);
194
195	return lemac_isa_find(&sc, ia, 0);
196}
197
198static void
199lemac_isa_attach(struct device *parent, struct device *self, void *aux)
200{
201	lemac_softc_t *sc = (void *)self;
202	struct isa_attach_args *ia = aux;
203
204	(void) lemac_isa_find(sc, ia, 1);
205}
206