1 /* $NetBSD: if_tlp_eisa.c,v 1.13 2005/02/27 00:26:59 perry Exp $ */
2
3 /*-
4 * Copyright (c) 1999, 2000 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
9 * 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 * EISA bus front-end for the Digital Semiconductor ``Tulip'' (21x4x)
42 * Ethernet controller family driver.
43 */
44
45 #include <sys/cdefs.h>
46 __KERNEL_RCSID(0, "$NetBSD: if_tlp_eisa.c,v 1.13 2005/02/27 00:26:59 perry Exp $");
47
48 #include "opt_inet.h"
49 #include "opt_ns.h"
50 #include "bpfilter.h"
51
52 #include <sys/param.h>
53 #include <sys/systm.h>
54 #include <sys/mbuf.h>
55 #include <sys/malloc.h>
56 #include <sys/kernel.h>
57 #include <sys/socket.h>
58 #include <sys/ioctl.h>
59 #include <sys/errno.h>
60 #include <sys/device.h>
61
62 #include <machine/endian.h>
63
64 #include <net/if.h>
65 #include <net/if_dl.h>
66 #include <net/if_media.h>
67 #include <net/if_ether.h>
68
69 #if NBPFILTER > 0
70 #include <net/bpf.h>
71 #endif
72
73 #ifdef INET
74 #include <netinet/in.h>
75 #include <netinet/if_inarp.h>
76 #endif
77
78 #ifdef NS
79 #include <netns/ns.h>
80 #include <netns/ns_if.h>
81 #endif
82
83 #include <machine/bus.h>
84 #include <machine/intr.h>
85
86 #include <dev/mii/miivar.h>
87 #include <dev/mii/mii_bitbang.h>
88
89 #include <dev/ic/tulipreg.h>
90 #include <dev/ic/tulipvar.h>
91
92 #include <dev/eisa/eisareg.h>
93 #include <dev/eisa/eisavar.h>
94 #include <dev/eisa/eisadevs.h>
95
96 #include <dev/pci/pcireg.h>
97
98 /*
99 * DE425 configuration registers; literal offsets from CSR base.
100 * This is effectively the 21040 PCI configuration space interleaved
101 * into the CSR space (CSRs are space 16 bytes on the DE425).
102 *
103 * What a cool address decoder hack they must have on that board...
104 */
105 #define DE425_CFID 0x08 /* Configuration ID */
106 #define DE425_CFCS 0x0c /* Configuration Command-Status */
107 #define DE425_CFRV 0x18 /* Configuration Revision */
108 #define DE425_CFLT 0x1c /* Configuration Latency Timer */
109 #define DE425_CBIO 0x28 /* Configuration Base I/O Address */
110 #define DE425_CFDA 0x2c /* Configuration Driver Area */
111 #define DE425_ENETROM 0xc90 /* Offset in I/O space for ENETROM */
112 #define DE425_CFG0 0xc88 /* IRQ Configuration Register */
113
114 struct tulip_eisa_softc {
115 struct tulip_softc sc_tulip; /* real Tulip softc */
116
117 /* EISA-specific goo. */
118 void *sc_ih; /* interrupt handle */
119 };
120
121 static int tlp_eisa_match(struct device *, struct cfdata *, void *);
122 static void tlp_eisa_attach(struct device *, struct device *, void *);
123
124 CFATTACH_DECL(tlp_eisa, sizeof(struct tulip_eisa_softc),
125 tlp_eisa_match, tlp_eisa_attach, NULL, NULL);
126
127 static const int tlp_eisa_irqs[] = { 5, 9, 10, 11 };
128
129 static const struct tulip_eisa_product {
130 const char *tep_eisaid; /* EISA ID */
131 const char *tep_name; /* device name */
132 tulip_chip_t tep_chip; /* base Tulip chip type */
133 } tlp_eisa_products[] = {
134 { "DEC4250", "DEC DE425",
135 TULIP_CHIP_DE425 },
136
137 { NULL, NULL,
138 TULIP_CHIP_INVALID },
139 };
140
141 static const struct tulip_eisa_product *
142 tlp_eisa_lookup(const struct eisa_attach_args *ea)
143 {
144 const struct tulip_eisa_product *tep;
145
146 for (tep = tlp_eisa_products;
147 tep->tep_chip != TULIP_CHIP_INVALID; tep++)
148 if (strcmp(ea->ea_idstring, tep->tep_eisaid) == 0)
149 return (tep);
150 return (NULL);
151 }
152
153 static int
154 tlp_eisa_match(struct device *parent, struct cfdata *match, void *aux)
155 {
156 struct eisa_attach_args *ea = aux;
157
158 if (tlp_eisa_lookup(ea) != NULL)
159 return (1);
160
161 return (0);
162 }
163
164 static void
165 tlp_eisa_attach(struct device *parent, struct device *self, void *aux)
166 {
167 static const u_int8_t testpat[] =
168 { 0xff, 0, 0x55, 0xaa, 0xff, 0, 0x55, 0xaa };
169 struct tulip_eisa_softc *esc = (void *) self;
170 struct tulip_softc *sc = &esc->sc_tulip;
171 struct eisa_attach_args *ea = aux;
172 eisa_chipset_tag_t ec = ea->ea_ec;
173 eisa_intr_handle_t ih;
174 bus_space_tag_t iot = ea->ea_iot;
175 bus_space_handle_t ioh;
176 const char *intrstr;
177 const struct tulip_eisa_product *tep;
178 u_int8_t enaddr[ETHER_ADDR_LEN], tmpbuf[sizeof(testpat)];
179 u_int32_t val;
180 int irq, i, cnt;
181
182 /*
183 * Map the device.
184 */
185 if (bus_space_map(iot, EISA_SLOT_ADDR(ea->ea_slot),
186 EISA_SLOT_SIZE, 0, &ioh)) {
187 printf(": unable to map I/O space\n");
188 return;
189 }
190
191 sc->sc_st = iot;
192 sc->sc_sh = ioh;
193
194 tep = tlp_eisa_lookup(ea);
195 if (tep == NULL) {
196 printf("\n");
197 panic("tlp_eisa_attach: impossible");
198 }
199 sc->sc_chip = tep->tep_chip;
200
201 /*
202 * DE425's registers are 16 bytes long; the PCI configuration
203 * space registers are interleaved in the I/O space.
204 */
205 sc->sc_regshift = 4;
206
207 /*
208 * No power management hooks.
209 */
210 sc->sc_flags |= TULIPF_ENABLED;
211
212 /*
213 * CBIO must map the EISA slot, and I/O access and Bus Mastering
214 * must be enabled.
215 */
216 bus_space_write_4(iot, ioh, DE425_CBIO, EISA_SLOT_ADDR(ea->ea_slot));
217 bus_space_write_4(iot, ioh, DE425_CFCS,
218 bus_space_read_4(iot, ioh, DE425_CFCS) |
219 PCI_COMMAND_IO_ENABLE | PCI_COMMAND_MASTER_ENABLE);
220
221 /*
222 * Get revision info.
223 */
224 sc->sc_rev = bus_space_read_4(iot, ioh, DE425_CFRV) & 0xff;
225
226 printf(": %s Ethernet, pass %d.%d\n",
227 tep->tep_name, (sc->sc_rev >> 4) & 0xf, sc->sc_rev & 0xf);
228
229 sc->sc_dmat = ea->ea_dmat;
230
231 /*
232 * EISA doesn't have a cache line register.
233 */
234 sc->sc_cacheline = 0;
235
236 /*
237 * Find the beginning of the Ethernet Address ROM.
238 */
239 for (i = 0, cnt = 0; i < sizeof(testpat) && cnt < 32; cnt++) {
240 tmpbuf[i] = bus_space_read_1(iot, ioh, DE425_ENETROM);
241 if (tmpbuf[i] == testpat[i])
242 i++;
243 else
244 i = 0;
245 }
246
247 /*
248 * ...and now read the contents of the Ethernet Address ROM.
249 */
250 sc->sc_srom = malloc(32, M_DEVBUF, M_WAITOK|M_ZERO);
251 for (i = 0; i < 32; i++)
252 sc->sc_srom[i] = bus_space_read_1(iot, ioh, DE425_ENETROM);
253
254 /*
255 * None of the DE425 boards have the new-style SROMs.
256 */
257 if (tlp_parse_old_srom(sc, enaddr) == 0) {
258 printf("%s: unable to decode old-style SROM\n",
259 sc->sc_dev.dv_xname);
260 return;
261 }
262
263 /*
264 * All DE425 boards use the 21040 media switch.
265 */
266 sc->sc_mediasw = &tlp_21040_mediasw;
267
268 /*
269 * Figure out which IRQ we want to use, and determine of it's
270 * edge- or level-triggered.
271 */
272 val = bus_space_read_4(iot, ioh, DE425_CFG0);
273 irq = tlp_eisa_irqs[(val >> 1) & 0x03];
274
275 /*
276 * Map and establish our interrupt.
277 */
278 if (eisa_intr_map(ec, irq, &ih)) {
279 printf("%s: unable to map interrupt (%u)\n",
280 sc->sc_dev.dv_xname, irq);
281 return;
282 }
283 intrstr = eisa_intr_string(ec, ih);
284 esc->sc_ih = eisa_intr_establish(ec, ih,
285 (val & 0x01) ? IST_EDGE : IST_LEVEL, IPL_NET, tlp_intr, sc);
286 if (esc->sc_ih == NULL) {
287 printf("%s: unable to establish interrupt",
288 sc->sc_dev.dv_xname);
289 if (intrstr != NULL)
290 printf(" at %s", intrstr);
291 printf("\n");
292 return;
293 }
294 if (intrstr != NULL)
295 printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname,
296 intrstr);
297
298 /*
299 * Finish off the attach.
300 */
301 tlp_attach(sc, enaddr);
302 }
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