1 /* $NetBSD: if_lc_isa.c,v 1.35 2016/07/11 11:31:50 msaitoh 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 1.35 2016/07/11 11:31:50 msaitoh 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
63 extern struct cfdriver lc_cd;
64
65 static int lemac_isa_find(lemac_softc_t *, const char *,
66 struct isa_attach_args *, int);
67 static int lemac_isa_probe(device_t, cfdata_t, void *);
68 static void lemac_isa_attach(device_t, device_t, void *);
69
70 CFATTACH_DECL_NEW(lc_isa, sizeof(lemac_softc_t),
71 lemac_isa_probe, lemac_isa_attach, NULL, NULL);
72
73 static int
lemac_isa_find(lemac_softc_t * sc,const char * xname,struct isa_attach_args * ia,int attach)74 lemac_isa_find(lemac_softc_t *sc, const char *xname,
75 struct isa_attach_args *ia, int attach)
76 {
77 bus_addr_t maddr;
78 bus_size_t msiz;
79 int rv = 0, irq;
80
81 if (ia->ia_nio < 1)
82 return (0);
83 if (ia->ia_niomem < 1)
84 return (0);
85 if (ia->ia_nirq < 1)
86 return (0);
87
88 if (ISA_DIRECT_CONFIG(ia))
89 return (0);
90
91 /*
92 * Disallow wildcarded i/o addresses.
93 */
94 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT)
95 return 0;
96
97 /*
98 * Make sure this is a valid LEMAC address.
99 */
100 if (ia->ia_io[0].ir_addr & (LEMAC_IOSIZE - 1))
101 return 0;
102
103 sc->sc_iot = ia->ia_iot;
104
105 if (bus_space_map(sc->sc_iot, ia->ia_io[0].ir_addr, LEMAC_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, &msiz, &irq);
124
125 if (ia->ia_iomem[0].ir_addr != ISA_UNKNOWN_IOMEM &&
126 ia->ia_iomem[0].ir_addr != maddr)
127 goto outio;
128
129 if (attach) {
130 if (msiz == 0) {
131 printf(": memory configuration is invalid\n");
132 goto outio;
133 }
134
135 sc->sc_memt = ia->ia_memt;
136 if (bus_space_map(ia->ia_memt, maddr, msiz, 0, &sc->sc_memh)) {
137 printf(": can't map mem space\n");
138 goto outio;
139 }
140 }
141
142 /*
143 * Double-check IRQ configuration.
144 */
145 if (ia->ia_irq[0].ir_irq != ISA_UNKNOWN_IRQ &&
146 ia->ia_irq[0].ir_irq != irq)
147 printf("%s: overriding IRQ %d to %d\n", xname,
148 ia->ia_irq[0].ir_irq, irq);
149
150 if (attach) {
151 sc->sc_ats = shutdownhook_establish(lemac_shutdown, sc);
152 if (sc->sc_ats == NULL) {
153 aprint_normal("\n");
154 aprint_error(
155 "%s: warning: can't establish shutdown hook\n",
156 xname);
157 }
158
159 lemac_ifattach(sc);
160
161 sc->sc_ih = isa_intr_establish(ia->ia_ic, irq, IST_EDGE,
162 IPL_NET, lemac_intr, sc);
163 }
164
165 /*
166 * I guess we've found one.
167 */
168 rv = 1;
169
170 ia->ia_nio = 1;
171 ia->ia_io[0].ir_size = LEMAC_IOSIZE;
172
173 ia->ia_niomem = 1;
174 ia->ia_iomem[0].ir_addr = maddr;
175 ia->ia_iomem[0].ir_size = msiz;
176
177 ia->ia_nirq = 1;
178 ia->ia_irq[0].ir_irq = irq;
179
180 ia->ia_ndrq = 0;
181
182 outio:
183 if (rv == 0 || !attach)
184 bus_space_unmap(sc->sc_iot, sc->sc_ioh, LEMAC_IOSIZE);
185 return rv;
186 }
187
188 static int
lemac_isa_probe(device_t parent,cfdata_t match,void * aux)189 lemac_isa_probe(device_t parent, cfdata_t match, void *aux)
190 {
191 struct isa_attach_args *ia = aux;
192 cfdata_t cf = match;
193 lemac_softc_t sc;
194 char xname[16];
195
196 snprintf(xname, sizeof(xname), "%s%d", lc_cd.cd_name, cf->cf_unit);
197
198 return lemac_isa_find(&sc, xname, ia, 0);
199 }
200
201 static void
lemac_isa_attach(device_t parent,device_t self,void * aux)202 lemac_isa_attach(device_t parent, device_t self, void *aux)
203 {
204 lemac_softc_t *sc = device_private(self);
205 struct isa_attach_args *ia = aux;
206
207 sc->sc_dev = self;
208 (void) lemac_isa_find(sc, device_xname(self), ia, 1);
209 }
210