if_lc_isa.c revision 1.32 
1/*	$NetBSD: if_lc_isa.c,v 1.32 2009/05/12 08:44:19 cegger 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 1.32 2009/05/12 08:44:19 cegger 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 *, cfdata_t, 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(lemac_softc_t *sc, struct isa_attach_args *ia, int attach)
74{
75	bus_addr_t maddr;
76	bus_size_t msiz;
77	int rv = 0, irq;
78
79	if (ia->ia_nio < 1)
80		return (0);
81	if (ia->ia_niomem < 1)
82		return (0);
83	if (ia->ia_nirq < 1)
84		return (0);
85
86	if (ISA_DIRECT_CONFIG(ia))
87		return (0);
88
89	/*
90	 * Disallow wildcarded i/o addresses.
91	 */
92	if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT)
93		return 0;
94
95	/*
96	 * Make sure this is a valid LEMAC address.
97	 */
98	if (ia->ia_io[0].ir_addr & (LEMAC_IOSIZE - 1))
99		return 0;
100
101	sc->sc_iot = ia->ia_iot;
102
103	if (bus_space_map(sc->sc_iot, ia->ia_io[0].ir_addr, LEMAC_IOSIZE, 0,
104	    &sc->sc_ioh)) {
105		if (attach)
106			printf(": can't map i/o space\n");
107		return 0;
108	}
109
110	/*
111	 * Read the Ethernet address from the EEPROM.
112	 * It must start with one of the DEC OUIs and pass the
113	 * DEC ethernet checksum test.
114	 */
115	if (lemac_port_check(sc->sc_iot, sc->sc_ioh) == 0)
116		goto outio;
117
118	/*
119	 * Get information about memory space and attempt to map it.
120	 */
121	lemac_info_get(sc->sc_iot, sc->sc_ioh, &maddr, &msiz, &irq);
122
123	if (ia->ia_iomem[0].ir_addr != ISA_UNKNOWN_IOMEM &&
124	    ia->ia_iomem[0].ir_addr != maddr)
125		goto outio;
126
127	if (attach) {
128		if (msiz == 0) {
129			printf(": memory configuration is invalid\n");
130			goto outio;
131		}
132
133		sc->sc_memt = ia->ia_memt;
134		if (bus_space_map(ia->ia_memt, maddr, msiz, 0, &sc->sc_memh)) {
135			printf(": can't map mem space\n");
136			goto outio;
137		}
138	}
139
140	/*
141	 * Double-check IRQ configuration.
142	 */
143	if (ia->ia_irq[0].ir_irq != ISA_UNKNOWN_IRQ &&
144	    ia->ia_irq[0].ir_irq != irq)
145		printf("%s: overriding IRQ %d to %d\n", device_xname(&sc->sc_dv),
146		       ia->ia_irq[0].ir_irq, irq);
147
148	if (attach) {
149		sc->sc_ats = shutdownhook_establish(lemac_shutdown, sc);
150		if (sc->sc_ats == NULL) {
151			aprint_normal("\n");
152			aprint_error_dev(&sc->sc_dv, "warning: can't establish shutdown hook\n");
153		}
154
155		lemac_ifattach(sc);
156
157		sc->sc_ih = isa_intr_establish(ia->ia_ic, irq, IST_EDGE,
158		    IPL_NET, lemac_intr, sc);
159	}
160
161	/*
162	 * I guess we've found one.
163	 */
164	rv = 1;
165
166	ia->ia_nio = 1;
167	ia->ia_io[0].ir_size = LEMAC_IOSIZE;
168
169	ia->ia_niomem = 1;
170	ia->ia_iomem[0].ir_addr = maddr;
171	ia->ia_iomem[0].ir_size = msiz;
172
173	ia->ia_nirq = 1;
174	ia->ia_irq[0].ir_irq = irq;
175
176	ia->ia_ndrq = 0;
177
178outio:
179	if (rv == 0 || !attach)
180		bus_space_unmap(sc->sc_iot, sc->sc_ioh, LEMAC_IOSIZE);
181	return rv;
182}
183
184static int
185lemac_isa_probe(struct device *parent, cfdata_t match, void *aux)
186{
187	struct isa_attach_args *ia = aux;
188	cfdata_t cf = match;
189	lemac_softc_t sc;
190	snprintf(sc.sc_dv.dv_xname, sizeof(sc.sc_dv.dv_xname), "%s%d",
191	    lc_cd.cd_name, cf->cf_unit);
192
193	return lemac_isa_find(&sc, ia, 0);
194}
195
196static void
197lemac_isa_attach(struct device *parent, struct device *self, void *aux)
198{
199	lemac_softc_t *sc = (void *)self;
200	struct isa_attach_args *ia = aux;
201
202	(void) lemac_isa_find(sc, ia, 1);
203}
204