1 /* $OpenBSD: if_lc_isa.c,v 1.14 2022/04/06 18:59:28 naddy Exp $ */
2 /* $NetBSD: if_lc_isa.c,v 1.10 2001/06/13 10:46:03 wiz Exp $ */
3
4 /*-
5 * Copyright (c) 1994, 1995, 1997 Matt Thomas <matt@3am-software.com>
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission
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 * DEC EtherWORKS 3 Ethernet Controllers
30 *
31 * Written by Matt Thomas
32 *
33 * This driver supports the LEMAC (DE203, DE204, and DE205) cards.
34 */
35
36 #include "bpfilter.h"
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/selinfo.h>
46 #include <sys/device.h>
47 #include <sys/queue.h>
48
49 #include <net/if.h>
50 #include <net/if_media.h>
51
52 #include <netinet/in.h>
53 #include <netinet/if_ether.h>
54
55 #if NBPFILTER > 0
56 #include <net/bpf.h>
57 #endif
58
59 #include <machine/cpu.h>
60 #include <machine/bus.h>
61 #include <machine/intr.h>
62
63 #include <dev/ic/lemacreg.h>
64 #include <dev/ic/lemacvar.h>
65
66 #include <dev/isa/isavar.h>
67
68 extern struct cfdriver lc_cd;
69
70 int lemac_isa_find(struct lemac_softc *, struct isa_attach_args *,
71 int);
72 int lemac_isa_probe(struct device *, void *, void *);
73 void lemac_isa_attach(struct device *, struct device *, void *);
74
75 const struct cfattach lc_isa_ca = {
76 sizeof(struct lemac_softc), lemac_isa_probe, lemac_isa_attach
77 };
78
79 int
80 lemac_isa_find(struct lemac_softc *sc, struct isa_attach_args *ia, int attach)
81 {
82 bus_addr_t maddr;
83 bus_size_t msize;
84 int rv = 0, irq;
85
86 /*
87 * Disallow wildcarded i/o addresses.
88 */
89 if (ia->ia_iobase == IOBASEUNK)
90 return 0;
91
92 /*
93 * Make sure this is a valid LEMAC address.
94 */
95 if (ia->ia_iobase & (LEMAC_IOSIZE - 1))
96 return 0;
97
98 sc->sc_iot = ia->ia_iot;
99
100 /*
101 * Map the LEMAC's port space for the probe sequence.
102 */
103 ia->ia_iosize = LEMAC_IOSIZE;
104
105 if (bus_space_map(sc->sc_iot, ia->ia_iobase, ia->ia_iosize, 0,
106 &sc->sc_ioh)) {
107 if (attach)
108 printf(": can't map i/o space\n");
109 return (0);
110 }
111
112 /*
113 * Read the Ethernet address from the EEPROM.
114 * It must start with one of the DEC OUIs and pass the
115 * DEC ethernet checksum test.
116 */
117 if (lemac_port_check(sc->sc_iot, sc->sc_ioh) == 0)
118 goto outio;
119
120 /*
121 * Get information about memory space and attempt to map it.
122 */
123 lemac_info_get(sc->sc_iot, sc->sc_ioh, &maddr, &msize, &irq);
124
125 if (ia->ia_maddr != maddr && ia->ia_maddr != MADDRUNK)
126 goto outio;
127
128 if (maddr != 0 && msize != 0) {
129 sc->sc_memt = ia->ia_memt;
130 if (bus_space_map(ia->ia_memt, maddr, msize, 0,
131 &sc->sc_memh)) {
132 if (attach)
133 printf(": can't map mem space\n");
134 goto outio;
135 }
136 }
137
138 /*
139 * Double-check IRQ configuration.
140 */
141 if (ia->ia_irq != irq && ia->ia_irq != IRQUNK)
142 printf("%s: overriding IRQ %d to %d\n", sc->sc_dv.dv_xname,
143 ia->ia_irq, irq);
144
145 if (attach) {
146 lemac_ifattach(sc);
147
148 sc->sc_ih = isa_intr_establish(ia->ia_ic, irq, IST_EDGE,
149 IPL_NET, lemac_intr, sc, sc->sc_dv.dv_xname);
150 }
151
152 /*
153 * I guess we've found one.
154 */
155 rv = 1;
156
157 ia->ia_maddr = maddr;
158 ia->ia_msize = msize;
159 ia->ia_irq = irq;
160
161 if (maddr != 0 && msize != 0 && (rv == 0 || !attach))
162 bus_space_unmap(sc->sc_memt, sc->sc_memh, msize);
163 outio:
164 if (rv == 0 || !attach)
165 bus_space_unmap(sc->sc_iot, sc->sc_ioh, LEMAC_IOSIZE);
166 return (rv);
167 }
168
169 int
170 lemac_isa_probe(struct device *parent, void *match, void *aux)
171 {
172 struct isa_attach_args *ia = aux;
173 struct cfdata *cf = ((struct device *)match)->dv_cfdata;
174 struct lemac_softc sc;
175
176 snprintf(sc.sc_dv.dv_xname, sizeof sc.sc_dv.dv_xname, "%s%d",
177 lc_cd.cd_name, cf->cf_unit);
178
179 return (lemac_isa_find(&sc, ia, 0));
180 }
181
182 void
183 lemac_isa_attach(struct device *parent, struct device *self, void *aux)
184 {
185 struct lemac_softc *sc = (void *)self;
186 struct isa_attach_args *ia = aux;
187
188 lemac_isa_find(sc, ia, 1);
189 }
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