1 /* $NetBSD: if_fmv_isa.c,v 1.13 2008/04/12 06:27:01 tsutsui Exp $ */
2
3 /*
4 * All Rights Reserved, Copyright (C) Fujitsu Limited 1995
5 *
6 * This software may be used, modified, copied, distributed, and sold, in
7 * both source and binary form provided that the above copyright, these
8 * terms and the following disclaimer are retained. The name of the author
9 * and/or the contributor may not be used to endorse or promote products
10 * derived from this software without specific prior written permission.
11 *
12 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND THE CONTRIBUTOR ``AS IS'' AND
13 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
14 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
15 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR THE CONTRIBUTOR BE LIABLE
16 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
17 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
18 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION.
19 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
20 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
21 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
22 * SUCH DAMAGE.
23 */
24
25 /*
26 * Portions copyright (C) 1993, David Greenman. This software may be used,
27 * modified, copied, distributed, and sold, in both source and binary form
28 * provided that the above copyright and these terms are retained. Under no
29 * circumstances is the author responsible for the proper functioning of this
30 * software, nor does the author assume any responsibility for damages
31 * incurred with its use.
32 */
33
34 #include <sys/cdefs.h>
35 __KERNEL_RCSID(0, "$NetBSD: if_fmv_isa.c,v 1.13 2008/04/12 06:27:01 tsutsui Exp $");
36
37 #include <sys/param.h>
38 #include <sys/systm.h>
39 #include <sys/device.h>
40
41 #include <net/if.h>
42 #include <net/if_ether.h>
43 #include <net/if_media.h>
44
45 #include <sys/bus.h>
46 #include <sys/intr.h>
47
48 #include <dev/ic/mb86960reg.h>
49 #include <dev/ic/mb86960var.h>
50 #include <dev/ic/fmvreg.h>
51 #include <dev/ic/fmvvar.h>
52
53 #include <dev/isa/isavar.h>
54
55 int fmv_isa_match(device_t, cfdata_t, void *);
56 void fmv_isa_attach(device_t, device_t, void *);
57
58 struct fmv_isa_softc {
59 struct mb86960_softc sc_mb86960; /* real "mb86960" softc */
60
61 /* ISA-specific goo. */
62 void *sc_ih; /* interrupt cookie */
63 };
64
65 CFATTACH_DECL_NEW(fmv_isa, sizeof(struct fmv_isa_softc),
66 fmv_isa_match, fmv_isa_attach, NULL, NULL);
67
68 struct fe_simple_probe_struct {
69 uint8_t port; /* Offset from the base I/O address. */
70 uint8_t mask; /* Bits to be checked. */
71 uint8_t bits; /* Values to be compared against. */
72 };
73
74 static inline int fe_simple_probe(bus_space_tag_t, bus_space_handle_t,
75 struct fe_simple_probe_struct const *);
76 static int fmv_find(bus_space_tag_t, bus_space_handle_t, int *, int *);
77
78 static const int fmv_iomap[8] = {
79 0x220, 0x240, 0x260, 0x280, 0x2A0, 0x2C0, 0x300, 0x340
80 };
81 #define NFMV_IOMAP __arraycount(fmv_iomap)
82 #define FMV_NPORTS 0x20
83
84 #ifdef FMV_DEBUG
85 #define DPRINTF printf
86 #else
87 #define DPRINTF while (/* CONSTCOND */0) printf
88 #endif
89
90 /*
91 * Hardware probe routines.
92 */
93
94 /*
95 * Determine if the device is present.
96 */
97 int
fmv_isa_match(device_t parent,cfdata_t cf,void * aux)98 fmv_isa_match(device_t parent, cfdata_t cf, void *aux)
99 {
100 struct isa_attach_args *ia = aux;
101 bus_space_tag_t iot = ia->ia_iot;
102 bus_space_handle_t ioh;
103 int i, iobase, irq, rv = 0;
104 uint8_t myea[ETHER_ADDR_LEN];
105
106 if (ia->ia_nio < 1)
107 return 0;
108 if (ia->ia_nirq < 1)
109 return 0;
110
111 if (ISA_DIRECT_CONFIG(ia))
112 return 0;
113
114 /* Disallow wildcarded values. */
115 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT)
116 return 0;
117
118 /*
119 * See if the sepcified address is valid for FMV-180 series.
120 */
121 for (i = 0; i < NFMV_IOMAP; i++)
122 if (fmv_iomap[i] == ia->ia_io[0].ir_addr)
123 break;
124 if (i == NFMV_IOMAP) {
125 DPRINTF("%s: unknown iobase 0x%x\n",
126 __func__, ia->ia_io[0].ir_addr);
127 return 0;
128 }
129
130 /* Map i/o space. */
131 if (bus_space_map(iot, ia->ia_io[0].ir_addr, FMV_NPORTS, 0, &ioh)) {
132 DPRINTF("%s: couldn't map iospace 0x%x\n",
133 __func__, ia->ia_io[0].ir_addr);
134 return 0;
135 }
136
137 if (fmv_find(iot, ioh, &iobase, &irq) == 0) {
138 DPRINTF("%s: fmv_find failed\n", __func__);
139 goto out;
140 }
141
142 if (iobase != ia->ia_io[0].ir_addr) {
143 DPRINTF("%s: unexpected iobase in board: 0x%x\n",
144 __func__, iobase);
145 goto out;
146 }
147
148 if (fmv_detect(iot, ioh, myea) == 0) { /* XXX necessary? */
149 DPRINTF("%s: fmv_detect failed\n", __func__);
150 goto out;
151 }
152
153 if (ia->ia_irq[0].ir_irq != ISA_UNKNOWN_IRQ) {
154 if (ia->ia_irq[0].ir_irq != irq) {
155 aprint_error("%s: irq mismatch; "
156 "kernel configured %d != board configured %d\n",
157 __func__, ia->ia_irq[0].ir_irq, irq);
158 goto out;
159 }
160 } else
161 ia->ia_irq[0].ir_irq = irq;
162
163 ia->ia_nio = 1;
164 ia->ia_io[0].ir_size = FMV_NPORTS;
165
166 ia->ia_nirq = 1;
167
168 ia->ia_niomem = 0;
169 ia->ia_ndrq = 0;
170
171 rv = 1;
172
173 out:
174 bus_space_unmap(iot, ioh, FMV_NPORTS);
175 return rv;
176 }
177
178 /*
179 * Check for specific bits in specific registers have specific values.
180 */
181 static inline int
fe_simple_probe(bus_space_tag_t iot,bus_space_handle_t ioh,const struct fe_simple_probe_struct * sp)182 fe_simple_probe(bus_space_tag_t iot, bus_space_handle_t ioh,
183 const struct fe_simple_probe_struct *sp)
184 {
185 uint8_t val;
186 const struct fe_simple_probe_struct *p;
187
188 for (p = sp; p->mask != 0; p++) {
189 val = bus_space_read_1(iot, ioh, p->port);
190 if ((val & p->mask) != p->bits) {
191 DPRINTF("%s: %x & %x != %x\n",
192 __func__, val, p->mask, p->bits);
193 return 0;
194 }
195 }
196
197 return 1;
198 }
199
200 /*
201 * Hardware (vendor) specific probe routines.
202 */
203
204 /*
205 * Probe Fujitsu FMV-180 series boards and get iobase and irq from
206 * board.
207 */
208 static int
fmv_find(bus_space_tag_t iot,bus_space_handle_t ioh,int * iobase,int * irq)209 fmv_find(bus_space_tag_t iot, bus_space_handle_t ioh, int *iobase, int *irq)
210 {
211 uint8_t config;
212 static const int fmv_irqmap[4] = { 3, 7, 10, 15 };
213 static const struct fe_simple_probe_struct probe_table[] = {
214 { FE_DLCR2, 0x70, 0x00 },
215 { FE_DLCR4, 0x08, 0x00 },
216 /* { FE_DLCR5, 0x80, 0x00 }, Doesn't work. */
217
218 { FE_FMV0, FE_FMV0_MAGIC_MASK, FE_FMV0_MAGIC_VALUE },
219 { FE_FMV1, FE_FMV1_MAGIC_MASK, FE_FMV1_MAGIC_VALUE },
220 { FE_FMV3, FE_FMV3_EXTRA_MASK, FE_FMV3_EXTRA_VALUE },
221 #if 1
222 /*
223 * Test *vendor* part of the station address for Fujitsu.
224 * The test will gain reliability of probe process, but
225 * it rejects FMV-180 clone boards manufactured by other vendors.
226 * We have to turn the test off when such cards are made available.
227 */
228 { FE_FMV4, 0xFF, 0x00 },
229 { FE_FMV5, 0xFF, 0x00 },
230 { FE_FMV6, 0xFF, 0x0E },
231 #else
232 /*
233 * We can always verify the *first* 2 bits (in Ehternet
234 * bit order) are "no multicast" and "no local" even for
235 * unknown vendors.
236 */
237 { FE_FMV4, 0x03, 0x00 },
238 #endif
239 { 0, 0x00, 0x00 },
240 };
241
242 /* Simple probe. */
243 if (fe_simple_probe(iot, ioh, probe_table) == 0)
244 return 0;
245
246 /* Check if our I/O address matches config info on EEPROM. */
247 config = bus_space_read_1(iot, ioh, FE_FMV2);
248 *iobase = fmv_iomap[(config & FE_FMV2_ADDR) >> FE_FMV2_ADDR_SHIFT];
249
250 /*
251 * Determine which IRQ to be used.
252 *
253 * In this version, we always get an IRQ assignment from the
254 * FMV-180's configuration EEPROM, ignoring that specified in
255 * config file.
256 */
257 *irq = fmv_irqmap[(config & FE_FMV2_IRQ) >> FE_FMV2_IRQ_SHIFT];
258
259 return 1;
260 }
261
262 void
fmv_isa_attach(device_t parent,device_t self,void * aux)263 fmv_isa_attach(device_t parent, device_t self, void *aux)
264 {
265 struct fmv_isa_softc *isc = device_private(self);
266 struct mb86960_softc *sc = &isc->sc_mb86960;
267 struct isa_attach_args *ia = aux;
268 bus_space_tag_t iot = ia->ia_iot;
269 bus_space_handle_t ioh;
270
271 sc->sc_dev = self;
272
273 /* Map i/o space. */
274 if (bus_space_map(iot, ia->ia_io[0].ir_addr, FMV_NPORTS, 0, &ioh)) {
275 aprint_error(": can't map i/o space\n");
276 return;
277 }
278
279 sc->sc_bst = iot;
280 sc->sc_bsh = ioh;
281
282 fmv_attach(sc);
283
284 /* Establish the interrupt handler. */
285 isc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq,
286 IST_EDGE, IPL_NET, mb86960_intr, sc);
287 if (isc->sc_ih == NULL)
288 aprint_error_dev(sc->sc_dev,
289 "couldn't establish interrupt handler\n");
290 }
291