1 /* $NetBSD: if_le.c,v 1.63 2024/01/16 05:48:28 thorpej Exp $ */
2
3 /*-
4 * Copyright (c) 1998 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.
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) 1992, 1993
34 * The Regents of the University of California. All rights reserved.
35 *
36 * This code is derived from software contributed to Berkeley by
37 * Ralph Campbell and Rick Macklem.
38 *
39 * Redistribution and use in source and binary forms, with or without
40 * modification, are permitted provided that the following conditions
41 * are met:
42 * 1. Redistributions of source code must retain the above copyright
43 * notice, this list of conditions and the following disclaimer.
44 * 2. Redistributions in binary form must reproduce the above copyright
45 * notice, this list of conditions and the following disclaimer in the
46 * documentation and/or other materials provided with the distribution.
47 * 3. Neither the name of the University nor the names of its contributors
48 * may be used to endorse or promote products derived from this software
49 * without specific prior written permission.
50 *
51 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
52 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
53 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
54 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
55 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
56 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
57 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
58 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
59 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
60 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
61 * SUCH DAMAGE.
62 *
63 * @(#)if_le.c 8.2 (Berkeley) 11/16/93
64 */
65
66 #include <sys/cdefs.h>
67 __KERNEL_RCSID(0, "$NetBSD: if_le.c,v 1.63 2024/01/16 05:48:28 thorpej Exp $");
68
69 #include "opt_inet.h"
70
71 #include <sys/param.h>
72 #include <sys/systm.h>
73 #include <sys/device.h>
74
75 #include <net/if.h>
76 #include <net/if_ether.h>
77 #include <net/if_media.h>
78
79 #include <dev/ic/lancereg.h>
80 #include <dev/ic/lancevar.h>
81 #include <dev/ic/am7990var.h>
82
83 #include <hp300/dev/diovar.h>
84 #include <hp300/dev/diodevs.h>
85 #include <hp300/dev/if_lereg.h>
86
87 #include "opt_useleds.h"
88
89 #ifdef USELEDS
90 #include <hp300/hp300/leds.h>
91 #endif
92
93 struct le_softc {
94 struct am7990_softc sc_am7990; /* glue to MI code */
95
96 bus_space_tag_t sc_bst;
97
98 bus_space_handle_t sc_bsh0; /* DIO registers */
99 bus_space_handle_t sc_bsh1; /* LANCE registers */
100 bus_space_handle_t sc_bsh2; /* buffer area */
101 };
102
103 static int lematch(device_t, cfdata_t, void *);
104 static void leattach(device_t, device_t, void *);
105
106 CFATTACH_DECL_NEW(le, sizeof(struct le_softc),
107 lematch, leattach, NULL, NULL);
108
109 static int leintr(void *);
110
111 #if defined(_KERNEL_OPT)
112 #include "opt_ddb.h"
113 #endif
114
115 static void le_copytobuf(struct lance_softc *, void *, int, int);
116 static void le_copyfrombuf(struct lance_softc *, void *, int, int);
117 static void le_zerobuf(struct lance_softc *, int, int);
118
119 /* offsets for: ID, REGS, MEM, NVRAM */
120 static const int lestd[] = { 0, 0x4000, 0x8000, 0xC008 };
121
122 static void
lewrcsr(struct lance_softc * sc,uint16_t port,uint16_t val)123 lewrcsr(struct lance_softc *sc, uint16_t port, uint16_t val)
124 {
125 struct le_softc *lesc = (struct le_softc *)sc;
126 bus_space_tag_t bst = lesc->sc_bst;
127 bus_space_handle_t bsh0 = lesc->sc_bsh0;
128 bus_space_handle_t bsh1 = lesc->sc_bsh1;
129
130 do {
131 bus_space_write_2(bst, bsh1, LER1_RAP, port);
132 } while ((bus_space_read_1(bst, bsh0, LER0_STATUS) & LE_ACK) == 0);
133 do {
134 bus_space_write_2(bst, bsh1, LER1_RDP, val);
135 } while ((bus_space_read_1(bst, bsh0, LER0_STATUS) & LE_ACK) == 0);
136 }
137
138 static uint16_t
lerdcsr(struct lance_softc * sc,uint16_t port)139 lerdcsr(struct lance_softc *sc, uint16_t port)
140 {
141 struct le_softc *lesc = (struct le_softc *)sc;
142 bus_space_tag_t bst = lesc->sc_bst;
143 bus_space_handle_t bsh0 = lesc->sc_bsh0;
144 bus_space_handle_t bsh1 = lesc->sc_bsh1;
145 uint16_t val;
146
147 do {
148 bus_space_write_2(bst, bsh1, LER1_RAP, port);
149 } while ((bus_space_read_1(bst, bsh0, LER0_STATUS) & LE_ACK) == 0);
150 do {
151 val = bus_space_read_2(bst, bsh1, LER1_RDP);
152 } while ((bus_space_read_1(bst, bsh0, LER0_STATUS) & LE_ACK) == 0);
153
154 return val;
155 }
156
157 static int
lematch(device_t parent,cfdata_t cf,void * aux)158 lematch(device_t parent, cfdata_t cf, void *aux)
159 {
160 struct dio_attach_args *da = aux;
161
162 if (da->da_id == DIO_DEVICE_ID_LAN)
163 return 1;
164 return 0;
165 }
166
167 /*
168 * Interface exists: make available by filling in network interface
169 * record. System will initialize the interface when it is ready
170 * to accept packets.
171 */
172 static void
leattach(device_t parent,device_t self,void * aux)173 leattach(device_t parent, device_t self, void *aux)
174 {
175 struct le_softc *lesc = device_private(self);
176 struct lance_softc *sc = &lesc->sc_am7990.lsc;
177 struct dio_attach_args *da = aux;
178 bus_space_tag_t bst = da->da_bst;
179 bus_space_handle_t bsh0, bsh1, bsh2;
180 bus_size_t offset;
181 int i;
182
183 sc->sc_dev = self;
184
185 if (bus_space_map(bst, (bus_addr_t)dio_scodetopa(da->da_scode),
186 da->da_size, 0, &bsh0)) {
187 aprint_error(": can't map LANCE registers\n");
188 return;
189 }
190
191 if (bus_space_subregion(bst, bsh0, lestd[1], LER1_SIZE, &bsh1)) {
192 aprint_error(": can't subregion LANCE space\n");
193 return;
194 }
195
196 if (bus_space_subregion(bst, bsh0, lestd[2], LE_BUFSIZE, &bsh2)) {
197 aprint_error(": can't subregion buffer space\n");
198 return;
199 }
200
201 lesc->sc_bst = bst;
202 lesc->sc_bsh0 = bsh0;
203 lesc->sc_bsh1 = bsh1;
204 lesc->sc_bsh2 = bsh2;
205
206 bus_space_write_1(bst, bsh0, LER0_ID, 0xff);
207 DELAY(100);
208
209 sc->sc_conf3 = LE_C3_BSWP;
210 sc->sc_addr = 0;
211 sc->sc_memsize = LE_BUFSIZE;
212
213 /*
214 * Read the ethernet address off the board, one nibble at a time.
215 */
216 offset = lestd[3];
217 for (i = 0; i < sizeof(sc->sc_enaddr); i++) {
218 sc->sc_enaddr[i] =
219 (bus_space_read_1(bst, bsh0, ++offset) & 0xf) << 4;
220 offset++;
221 sc->sc_enaddr[i] |=
222 (bus_space_read_1(bst, bsh0, ++offset) & 0xf);
223 offset++;
224 }
225
226 sc->sc_copytodesc = le_copytobuf;
227 sc->sc_copyfromdesc = le_copyfrombuf;
228 sc->sc_copytobuf = le_copytobuf;
229 sc->sc_copyfrombuf = le_copyfrombuf;
230 sc->sc_zerobuf = le_zerobuf;
231
232 sc->sc_rdcsr = lerdcsr;
233 sc->sc_wrcsr = lewrcsr;
234 sc->sc_hwinit = NULL;
235
236 am7990_config(&lesc->sc_am7990);
237
238 /* Establish the interrupt handler. */
239 (void) dio_intr_establish(leintr, sc, da->da_ipl, ISRPRI_NET);
240 bus_space_write_1(bst, bsh0, LER0_STATUS, LE_IE);
241 }
242
243 static int
leintr(void * arg)244 leintr(void *arg)
245 {
246 struct lance_softc *sc = arg;
247 #ifdef USELEDS
248 uint16_t isr;
249
250 isr = lerdcsr(sc, LE_CSR0);
251
252 if ((isr & LE_C0_INTR) == 0)
253 return 0;
254
255 if (isr & LE_C0_RINT)
256 ledcontrol(0, 0, LED_LANRCV);
257
258 if (isr & LE_C0_TINT)
259 ledcontrol(0, 0, LED_LANXMT);
260 #endif /* USELEDS */
261
262 return am7990_intr(sc);
263 }
264
265 static void
le_copytobuf(struct lance_softc * sc,void * from,int boff,int len)266 le_copytobuf(struct lance_softc *sc, void *from, int boff, int len)
267 {
268 struct le_softc *lesc = (struct le_softc *)sc;
269
270 bus_space_write_region_1(lesc->sc_bst, lesc->sc_bsh2, boff, from, len);
271 }
272
273 static void
le_copyfrombuf(struct lance_softc * sc,void * to,int boff,int len)274 le_copyfrombuf(struct lance_softc *sc, void *to, int boff, int len)
275 {
276 struct le_softc *lesc = (struct le_softc *)sc;
277
278 bus_space_read_region_1(lesc->sc_bst, lesc->sc_bsh2, boff, to, len);
279 }
280
281 static void
le_zerobuf(struct lance_softc * sc,int boff,int len)282 le_zerobuf(struct lance_softc *sc, int boff, int len)
283 {
284 struct le_softc *lesc = (struct le_softc *)sc;
285
286 bus_space_set_region_1(lesc->sc_bst, lesc->sc_bsh2, boff, 0, len);
287 }
288