1 /* $NetBSD: if_ep_mca.c,v 1.24 2020/04/08 04:32:14 msaitoh Exp $ */
2
3 /*-
4 * Copyright (c) 2001 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jaromir Dolecek.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 /*
33 * Copyright (c) 1997 Jonathan Stone <jonathan@NetBSD.org>
34 * Copyright (c) 1994 Herb Peyerl <hpeyerl@beer.org>
35 * All rights reserved.
36 *
37 * Redistribution and use in source and binary forms, with or without
38 * modification, are permitted provided that the following conditions
39 * are met:
40 * 1. Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * 2. Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in the
44 * documentation and/or other materials provided with the distribution.
45 * 3. All advertising materials mentioning features or use of this software
46 * must display the following acknowledgement:
47 * This product includes software developed by Herb Peyerl.
48 * 4. The name of Herb Peyerl may not be used to endorse or promote products
49 * derived from this software without specific prior written permission.
50 *
51 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
52 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
53 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
54 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
55 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
56 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
57 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
58 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
59 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
60 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
61 */
62
63 /*
64 * Driver for 3Com 3c529 cards.
65 *
66 * If you encounter sucky performance, try kernel without DEBUG/DIAGNOSTIC.
67 * This helped on my test machine to change the performance of the card
68 * from like 5KB/s to like 800 KB/s.
69 */
70
71 #include <sys/cdefs.h>
72 __KERNEL_RCSID(0, "$NetBSD: if_ep_mca.c,v 1.24 2020/04/08 04:32:14 msaitoh Exp $");
73
74 #include <sys/param.h>
75 #include <sys/systm.h>
76 #include <sys/mbuf.h>
77 #include <sys/socket.h>
78 #include <sys/ioctl.h>
79 #include <sys/errno.h>
80 #include <sys/device.h>
81
82 #include <net/if.h>
83 #include <net/if_ether.h>
84 #include <net/if_media.h>
85
86 #include <sys/bus.h>
87
88 #include <dev/mii/miivar.h>
89
90 #include <dev/ic/elink3var.h>
91 #include <dev/ic/elink3reg.h>
92
93 #include <dev/mca/mcavar.h>
94 #include <dev/mca/mcadevs.h>
95
96 /*
97 * MCA constants.
98 */
99 #define MCA_CBIO 0x200 /* Configuration Base IO Address */
100 #define MCA_IOSZ 0x10 /* I/O space size */
101
102 int ep_mca_match(device_t , cfdata_t , void *);
103 void ep_mca_attach(device_t , device_t , void *);
104
105 CFATTACH_DECL_NEW(ep_mca, sizeof(struct ep_softc),
106 ep_mca_match, ep_mca_attach, NULL, NULL);
107
108 const struct ep_mca_product {
109 u_int32_t epp_prodid; /* MCA product ID */
110 const char *epp_name; /* device name */
111 } ep_mca_products[] = {
112 { MCA_PRODUCT_3C529, "3C529 Ethernet Adapter" },
113 { MCA_PRODUCT_3C529_TP, "3c529-TP Ethernet Adapter" },
114 { MCA_PRODUCT_3C529_TM, "3c529 Ethernet Adapter (test mode)" },
115 { MCA_PRODUCT_3C529_2T, "3c529 Ethernet Adapter (10base2/T)" },
116 { MCA_PRODUCT_3C529_T, "3c529 Ethernet Adapter (10baseT)" },
117
118 { 0, NULL },
119 };
120
121 static const struct ep_mca_product *ep_mca_lookup
122 (const struct mca_attach_args *);
123
124 static const struct ep_mca_product *
ep_mca_lookup(const struct mca_attach_args * ma)125 ep_mca_lookup(const struct mca_attach_args *ma)
126 {
127 const struct ep_mca_product *epp;
128
129 for (epp = ep_mca_products; epp->epp_name != NULL; epp++)
130 if (ma->ma_id == epp->epp_prodid)
131 return (epp);
132
133 return (NULL);
134 }
135
136 int
ep_mca_match(device_t parent,cfdata_t match,void * aux)137 ep_mca_match(device_t parent, cfdata_t match, void *aux)
138 {
139 struct mca_attach_args *ma = (struct mca_attach_args *) aux;
140
141 if (ep_mca_lookup(ma) != NULL)
142 return (1);
143
144 return (0);
145 }
146
147 void
ep_mca_attach(device_t parent,device_t self,void * aux)148 ep_mca_attach(device_t parent, device_t self, void *aux)
149 {
150 struct ep_softc *sc = device_private(self);
151 struct mca_attach_args *ma = aux;
152 bus_space_handle_t ioh;
153 int pos4, pos5, iobase, irq, media;
154 const struct ep_mca_product *epp;
155
156 pos4 = mca_conf_read(ma->ma_mc, ma->ma_slot, 4);
157 pos5 = mca_conf_read(ma->ma_mc, ma->ma_slot, 5);
158
159 /*
160 * POS register 2: (adf pos0)
161 * 7 6 5 4 3 2 1 0
162 * \__ enable: 0=adapter disabled, 1=adapter enabled
163 *
164 * POS register 3: (adf pos1)
165 *
166 * 7 6 5 4 3 2 1 0
167 * \________/
168 * \_______ Boot ROM Address Range: 0=disabled
169 * X=0xc2000-0xc3fff + (x * 0x2000)
170 *
171 * POS register 4: (adf pos2)
172 *
173 * 7 6 5 4 3 2 1 0
174 * \________/ \_/
175 * \ \__ Transceiver Type: 00=on-board (RJ45), 01=ext(AUI)
176 * \______ I/O Address Range: 0x200-0x20f + ((x>>2) * 0x400)
177 *
178 * POS register 5: (adf pos3)
179 *
180 * 7 6 5 4 3 2 1 0
181 * \____/
182 * \__ Interrupt level
183 */
184
185 iobase = MCA_CBIO + (((pos4 & 0xfc) >> 2) * 0x400);
186 irq = (pos5 & 0x0f);
187
188 sc->sc_dev = self;
189 /* map the pio registers */
190 if (bus_space_map(ma->ma_iot, iobase, MCA_IOSZ, 0, &ioh)) {
191 aprint_error_dev(sc->sc_dev, "unable to map i/o space\n");
192 return;
193 }
194
195 sc->sc_iot = ma->ma_iot;
196 sc->sc_ioh = ioh;
197
198 epp = ep_mca_lookup(ma);
199 if (epp == NULL) {
200 printf("\n");
201 panic("ep_mca_attach: impossible");
202 }
203
204 printf(" slot %d irq %d: 3Com %s\n", ma->ma_slot + 1,
205 irq, epp->epp_name);
206
207 sc->enable = NULL;
208 sc->disable = NULL;
209 sc->enabled = 1;
210
211 sc->bustype = ELINK_BUS_MCA;
212 sc->ep_flags = 0;
213
214 if (epconfig(sc, ELINK_CHIPSET_3C509, NULL))
215 return;
216
217 /* Map and establish the interrupt. */
218 sc->sc_ih = mca_intr_establish(ma->ma_mc, irq, IPL_NET, epintr, sc);
219 if (sc->sc_ih == NULL) {
220 aprint_error_dev(sc->sc_dev,
221 "couldn't establish interrupt handler\n");
222 return;
223 }
224
225 /*
226 * Set default media to be same as the one selected in POS.
227 */
228 switch (pos4 & 0x03) {
229 case 0x00:
230 /* on-board RJ-45 */
231 media = IFM_10_T;
232 break;
233 case 0x01:
234 /* external AUI */
235 media = IFM_10_5;
236 break;
237 case 0x02:
238 /* undefined, should never be set */
239 media = IFM_NONE;
240 break;
241 case 0x03:
242 /* BNC */
243 media = IFM_10_2;
244 break;
245 default:
246 aprint_error_dev(sc->sc_dev, " cannot determine media\n");
247 return;
248 }
249 ifmedia_set(&sc->sc_mii.mii_media, IFM_ETHER|media);
250 }
251