FreeBSD/Linux Kernel Cross Reference
sys/dev/ic/depca.c
1 /* $NetBSD: depca.c,v 1.10 2003/08/07 16:31:01 agc Exp $ */
2
3 /*-
4 * Copyright (c) 1997, 1998, 2000 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Charles M. Hannum and by Jason R. Thorpe of the Numerical Aerospace
9 * Simulation Facility, NASA Ames Research Center.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 * must display the following acknowledgement:
21 * This product includes software developed by the NetBSD
22 * Foundation, Inc. and its contributors.
23 * 4. Neither the name of The NetBSD Foundation nor the names of its
24 * contributors may be used to endorse or promote products derived
25 * from this software without specific prior written permission.
26 *
27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37 * POSSIBILITY OF SUCH DAMAGE.
38 */
39
40 /*-
41 * Copyright (c) 1992, 1993
42 * The Regents of the University of California. All rights reserved.
43 *
44 * This code is derived from software contributed to Berkeley by
45 * Ralph Campbell and Rick Macklem.
46 *
47 * Redistribution and use in source and binary forms, with or without
48 * modification, are permitted provided that the following conditions
49 * are met:
50 * 1. Redistributions of source code must retain the above copyright
51 * notice, this list of conditions and the following disclaimer.
52 * 2. Redistributions in binary form must reproduce the above copyright
53 * notice, this list of conditions and the following disclaimer in the
54 * documentation and/or other materials provided with the distribution.
55 * 3. Neither the name of the University nor the names of its contributors
56 * may be used to endorse or promote products derived from this software
57 * without specific prior written permission.
58 *
59 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
60 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
61 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
62 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
63 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
64 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
65 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
66 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
67 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
68 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
69 * SUCH DAMAGE.
70 *
71 * @(#)if_le.c 8.2 (Berkeley) 11/16/93
72 */
73
74 #include <sys/cdefs.h>
75 __KERNEL_RCSID(0, "$NetBSD: depca.c,v 1.10 2003/08/07 16:31:01 agc Exp $");
76
77 #include <sys/param.h>
78 #include <sys/systm.h>
79 #include <sys/mbuf.h>
80 #include <sys/syslog.h>
81 #include <sys/socket.h>
82 #include <sys/device.h>
83
84 #include <net/if.h>
85 #include <net/if_ether.h>
86 #include <net/if_media.h>
87
88 #include <machine/cpu.h>
89 #include <machine/intr.h>
90 #include <machine/bus.h>
91
92 #include <dev/isa/isareg.h>
93 #include <dev/isa/isavar.h>
94
95 #include <dev/ic/lancereg.h>
96 #include <dev/ic/lancevar.h>
97 #include <dev/ic/am7990reg.h>
98 #include <dev/ic/am7990var.h>
99 #include <dev/ic/depcareg.h>
100 #include <dev/ic/depcavar.h>
101
102 struct le_depca_softc {
103 struct am7990_softc sc_am7990; /* glue to MI code */
104
105 void *sc_ih;
106 };
107
108 int le_depca_match(struct device *, struct cfdata *, void *);
109 void le_depca_attach(struct device *, struct device *, void *);
110
111 CFATTACH_DECL(le_depca, sizeof(struct le_depca_softc),
112 le_depca_match, le_depca_attach, NULL, NULL);
113
114 void depca_copytobuf(struct lance_softc *, void *, int, int);
115 void depca_copyfrombuf(struct lance_softc *, void *, int, int);
116 void depca_zerobuf(struct lance_softc *, int, int);
117
118 struct depca_attach_args {
119 const char *da_name;
120 };
121
122 int depca_print(void *, const char *);
123
124 void
125 depca_attach(struct depca_softc *sc)
126 {
127 struct depca_attach_args da;
128
129 da.da_name = "le";
130
131 (void) config_found(&sc->sc_dev, &da, depca_print);
132 }
133
134 int
135 depca_print(void *aux, const char *pnp)
136 {
137 struct depca_attach_args *da = aux;
138
139 if (pnp)
140 aprint_normal("%s at %s", da->da_name, pnp);
141
142 return (UNCONF);
143 }
144
145 void
146 depca_wrcsr(struct lance_softc *sc, u_int16_t port, u_int16_t val)
147 {
148 struct depca_softc *dsc = (void *) sc->sc_dev.dv_parent;
149
150 bus_space_write_2(dsc->sc_iot, dsc->sc_ioh, DEPCA_RAP, port);
151 bus_space_write_2(dsc->sc_iot, dsc->sc_ioh, DEPCA_RDP, val);
152 }
153
154 u_int16_t
155 depca_rdcsr(struct lance_softc *sc, u_int16_t port)
156 {
157 struct depca_softc *dsc = (void *) sc->sc_dev.dv_parent;
158
159 bus_space_write_2(dsc->sc_iot, dsc->sc_ioh, DEPCA_RAP, port);
160 return (bus_space_read_2(dsc->sc_iot, dsc->sc_ioh, DEPCA_RDP));
161 }
162
163 int
164 depca_readprom(bus_space_tag_t iot, bus_space_handle_t ioh, u_int8_t *laddr)
165 {
166 int port, i;
167
168 /*
169 * Extract the physical MAC address from the ROM.
170 *
171 * The address PROM is 32 bytes wide, and we access it through
172 * a single I/O port. On each read, it rotates to the next
173 * position. We find the ethernet address by looking for a
174 * particular sequence of bytes (0xff, 0x00, 0x55, 0xaa, 0xff,
175 * 0x00, 0x55, 0xaa), and then reading the next 8 bytes (the
176 * ethernet address and a checksum).
177 *
178 * It appears that the PROM can be at one of two locations, so
179 * we just try both.
180 */
181 port = DEPCA_ADP;
182 for (i = 0; i < 32; i++)
183 if (bus_space_read_1(iot, ioh, port) == 0xff &&
184 bus_space_read_1(iot, ioh, port) == 0x00 &&
185 bus_space_read_1(iot, ioh, port) == 0x55 &&
186 bus_space_read_1(iot, ioh, port) == 0xaa &&
187 bus_space_read_1(iot, ioh, port) == 0xff &&
188 bus_space_read_1(iot, ioh, port) == 0x00 &&
189 bus_space_read_1(iot, ioh, port) == 0x55 &&
190 bus_space_read_1(iot, ioh, port) == 0xaa)
191 goto found;
192 port = DEPCA_ADP + 1;
193 for (i = 0; i < 32; i++)
194 if (bus_space_read_1(iot, ioh, port) == 0xff &&
195 bus_space_read_1(iot, ioh, port) == 0x00 &&
196 bus_space_read_1(iot, ioh, port) == 0x55 &&
197 bus_space_read_1(iot, ioh, port) == 0xaa &&
198 bus_space_read_1(iot, ioh, port) == 0xff &&
199 bus_space_read_1(iot, ioh, port) == 0x00 &&
200 bus_space_read_1(iot, ioh, port) == 0x55 &&
201 bus_space_read_1(iot, ioh, port) == 0xaa)
202 goto found;
203 printf("depca: address not found\n");
204 return (-1);
205
206 found:
207
208 if (laddr) {
209 for (i = 0; i < 6; i++)
210 laddr[i] = bus_space_read_1(iot, ioh, port);
211 }
212
213 #if 0
214 sum =
215 (laddr[0] << 2) +
216 (laddr[1] << 10) +
217 (laddr[2] << 1) +
218 (laddr[3] << 9) +
219 (laddr[4] << 0) +
220 (laddr[5] << 8);
221 sum = (sum & 0xffff) + (sum >> 16);
222 sum = (sum & 0xffff) + (sum >> 16);
223
224 rom_sum = bus_space_read_1(iot, ioh, port);
225 rom_sum |= bus_space_read_1(iot, ioh, port) << 8;
226
227 if (sum != rom_sum) {
228 printf("depca: checksum mismatch; calculated %04x != read %04x",
229 sum, rom_sum);
230 return (-1);
231 }
232 #endif
233
234 return (0);
235 }
236
237 int
238 le_depca_match(struct device *parent, struct cfdata *match, void *aux)
239 {
240 struct depca_attach_args *da = aux;
241
242 return (strcmp(da->da_name, match->cf_name) == 0);
243 }
244
245 void
246 le_depca_attach(struct device *parent, struct device *self, void *aux)
247 {
248 struct depca_softc *dsc = (void *) parent;
249 struct le_depca_softc *lesc = (void *) self;
250 struct lance_softc *sc = &lesc->sc_am7990.lsc;
251 u_int8_t val;
252 int i;
253
254 printf("\n");
255
256 /* I/O and memory spaces already mapped. */
257
258 if (depca_readprom(dsc->sc_iot, dsc->sc_ioh, sc->sc_enaddr)) {
259 printf("%s: can't read PROM\n", self->dv_xname);
260 return;
261 }
262
263 bus_space_write_2(dsc->sc_iot, dsc->sc_ioh, DEPCA_CSR,
264 DEPCA_CSR_DUM | DEPCA_CSR_IEN | DEPCA_CSR_SHE |
265 (dsc->sc_memsize == 32*1024 ? DEPCA_CSR_LOW32K : 0));
266
267 val = 0xff;
268 for (;;) {
269 u_int8_t cv;
270
271 bus_space_set_region_1(dsc->sc_memt, dsc->sc_memh, 0, val,
272 dsc->sc_memsize);
273 for (i = 0; i < dsc->sc_memsize; i++) {
274 cv = bus_space_read_1(dsc->sc_memt, dsc->sc_memh, i);
275 if (cv != val) {
276 printf("%s: failed to clear memory at %d "
277 "(0x%02x != 0x%02x)\n",
278 sc->sc_dev.dv_xname, i, cv, val);
279 return;
280 }
281 }
282 if (val == 0x00)
283 break;
284 val -= 0x55;
285 }
286
287 sc->sc_conf3 = LE_C3_ACON;
288 sc->sc_mem = 0; /* Not used. */
289 sc->sc_addr = 0;
290 sc->sc_memsize = dsc->sc_memsize;
291
292 sc->sc_copytodesc = depca_copytobuf;
293 sc->sc_copyfromdesc = depca_copyfrombuf;
294 sc->sc_copytobuf = depca_copytobuf;
295 sc->sc_copyfrombuf = depca_copyfrombuf;
296 sc->sc_zerobuf = depca_zerobuf;
297
298 sc->sc_rdcsr = depca_rdcsr;
299 sc->sc_wrcsr = depca_wrcsr;
300 sc->sc_hwinit = NULL;
301
302 printf("%s", sc->sc_dev.dv_xname);
303 am7990_config(&lesc->sc_am7990);
304
305 lesc->sc_ih = (*dsc->sc_intr_establish)(dsc, sc);
306 }
307
308 /*
309 * Controller interrupt.
310 */
311 int
312 depca_intredge(void *arg)
313 {
314
315 if (am7990_intr(arg) == 0)
316 return (0);
317 for (;;)
318 if (am7990_intr(arg) == 0)
319 return (1);
320 }
321
322 /*
323 * DEPCA shared memory access functions.
324 */
325
326 void
327 depca_copytobuf(struct lance_softc *sc, void *from, int boff, int len)
328 {
329 struct depca_softc *dsc = (void *) sc->sc_dev.dv_parent;
330
331 bus_space_write_region_1(dsc->sc_memt, dsc->sc_memh, boff,
332 from, len);
333 }
334
335 void
336 depca_copyfrombuf(struct lance_softc *sc, void *to, int boff, int len)
337 {
338 struct depca_softc *dsc = (void *) sc->sc_dev.dv_parent;
339
340 bus_space_read_region_1(dsc->sc_memt, dsc->sc_memh, boff,
341 to, len);
342 }
343
344 void
345 depca_zerobuf(struct lance_softc *sc, int boff, int len)
346 {
347 struct depca_softc *dsc = (void *) sc->sc_dev.dv_parent;
348
349 bus_space_set_region_1(dsc->sc_memt, dsc->sc_memh, boff,
350 0x00, len);
351 }
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