1 /* $OpenBSD: if_lc_isa.c,v 1.15 2023/09/11 08:41:26 mvs 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/device.h>
46 #include <sys/queue.h>
47
48 #include <net/if.h>
49 #include <net/if_media.h>
50
51 #include <netinet/in.h>
52 #include <netinet/if_ether.h>
53
54 #if NBPFILTER > 0
55 #include <net/bpf.h>
56 #endif
57
58 #include <machine/cpu.h>
59 #include <machine/bus.h>
60 #include <machine/intr.h>
61
62 #include <dev/ic/lemacreg.h>
63 #include <dev/ic/lemacvar.h>
64
65 #include <dev/isa/isavar.h>
66
67 extern struct cfdriver lc_cd;
68
69 int lemac_isa_find(struct lemac_softc *, struct isa_attach_args *,
70 int);
71 int lemac_isa_probe(struct device *, void *, void *);
72 void lemac_isa_attach(struct device *, struct device *, void *);
73
74 const struct cfattach lc_isa_ca = {
75 sizeof(struct lemac_softc), lemac_isa_probe, lemac_isa_attach
76 };
77
78 int
lemac_isa_find(struct lemac_softc * sc,struct isa_attach_args * ia,int attach)79 lemac_isa_find(struct lemac_softc *sc, struct isa_attach_args *ia, int attach)
80 {
81 bus_addr_t maddr;
82 bus_size_t msize;
83 int rv = 0, irq;
84
85 /*
86 * Disallow wildcarded i/o addresses.
87 */
88 if (ia->ia_iobase == IOBASEUNK)
89 return 0;
90
91 /*
92 * Make sure this is a valid LEMAC address.
93 */
94 if (ia->ia_iobase & (LEMAC_IOSIZE - 1))
95 return 0;
96
97 sc->sc_iot = ia->ia_iot;
98
99 /*
100 * Map the LEMAC's port space for the probe sequence.
101 */
102 ia->ia_iosize = LEMAC_IOSIZE;
103
104 if (bus_space_map(sc->sc_iot, ia->ia_iobase, ia->ia_iosize, 0,
105 &sc->sc_ioh)) {
106 if (attach)
107 printf(": can't map i/o space\n");
108 return (0);
109 }
110
111 /*
112 * Read the Ethernet address from the EEPROM.
113 * It must start with one of the DEC OUIs and pass the
114 * DEC ethernet checksum test.
115 */
116 if (lemac_port_check(sc->sc_iot, sc->sc_ioh) == 0)
117 goto outio;
118
119 /*
120 * Get information about memory space and attempt to map it.
121 */
122 lemac_info_get(sc->sc_iot, sc->sc_ioh, &maddr, &msize, &irq);
123
124 if (ia->ia_maddr != maddr && ia->ia_maddr != MADDRUNK)
125 goto outio;
126
127 if (maddr != 0 && msize != 0) {
128 sc->sc_memt = ia->ia_memt;
129 if (bus_space_map(ia->ia_memt, maddr, msize, 0,
130 &sc->sc_memh)) {
131 if (attach)
132 printf(": can't map mem space\n");
133 goto outio;
134 }
135 }
136
137 /*
138 * Double-check IRQ configuration.
139 */
140 if (ia->ia_irq != irq && ia->ia_irq != IRQUNK)
141 printf("%s: overriding IRQ %d to %d\n", sc->sc_dv.dv_xname,
142 ia->ia_irq, irq);
143
144 if (attach) {
145 lemac_ifattach(sc);
146
147 sc->sc_ih = isa_intr_establish(ia->ia_ic, irq, IST_EDGE,
148 IPL_NET, lemac_intr, sc, sc->sc_dv.dv_xname);
149 }
150
151 /*
152 * I guess we've found one.
153 */
154 rv = 1;
155
156 ia->ia_maddr = maddr;
157 ia->ia_msize = msize;
158 ia->ia_irq = irq;
159
160 if (maddr != 0 && msize != 0 && (rv == 0 || !attach))
161 bus_space_unmap(sc->sc_memt, sc->sc_memh, msize);
162 outio:
163 if (rv == 0 || !attach)
164 bus_space_unmap(sc->sc_iot, sc->sc_ioh, LEMAC_IOSIZE);
165 return (rv);
166 }
167
168 int
lemac_isa_probe(struct device * parent,void * match,void * aux)169 lemac_isa_probe(struct device *parent, void *match, void *aux)
170 {
171 struct isa_attach_args *ia = aux;
172 struct cfdata *cf = ((struct device *)match)->dv_cfdata;
173 struct lemac_softc sc;
174
175 snprintf(sc.sc_dv.dv_xname, sizeof sc.sc_dv.dv_xname, "%s%d",
176 lc_cd.cd_name, cf->cf_unit);
177
178 return (lemac_isa_find(&sc, ia, 0));
179 }
180
181 void
lemac_isa_attach(struct device * parent,struct device * self,void * aux)182 lemac_isa_attach(struct device *parent, struct device *self, void *aux)
183 {
184 struct lemac_softc *sc = (void *)self;
185 struct isa_attach_args *ia = aux;
186
187 lemac_isa_find(sc, ia, 1);
188 }
189