1 /*-
2 * Copyright (c) 1999 The NetBSD Foundation, Inc.
3 * All rights reserved.
4 *
5 * This code is derived from software contributed to The NetBSD Foundation
6 * by Paul Kranenburg.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the NetBSD
19 * Foundation, Inc. and its contributors.
20 * 4. Neither the name of The NetBSD Foundation nor the names of its
21 * contributors may be used to endorse or promote products derived
22 * from this software without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
25 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
26 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
27 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
28 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
32 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
33 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
34 * POSSIBILITY OF SUCH DAMAGE.
35 *
36 * from: NetBSD: if_hme_sbus.c,v 1.19 2004/03/17 17:04:58 pk Exp
37 */
38
39 #include <sys/cdefs.h>
40 __FBSDID("$FreeBSD$");
41
42 /*
43 * SBus front-end device driver for the HME ethernet device.
44 */
45
46 #include <sys/param.h>
47 #include <sys/systm.h>
48 #include <sys/bus.h>
49 #include <sys/kernel.h>
50 #include <sys/module.h>
51 #include <sys/resource.h>
52 #include <sys/socket.h>
53
54 #include <dev/ofw/ofw_bus.h>
55
56 #include <machine/bus.h>
57 #include <machine/ofw_machdep.h>
58 #include <machine/resource.h>
59
60 #include <sys/rman.h>
61
62 #include <net/ethernet.h>
63 #include <net/if.h>
64 #include <net/if_arp.h>
65 #include <net/if_dl.h>
66 #include <net/if_media.h>
67
68 #include <dev/mii/mii.h>
69 #include <dev/mii/miivar.h>
70
71 #include <sparc64/sbus/sbusvar.h>
72
73 #include <dev/hme/if_hmereg.h>
74 #include <dev/hme/if_hmevar.h>
75
76 #include "miibus_if.h"
77
78 struct hme_sbus_softc {
79 struct hme_softc hsc_hme; /* HME device */
80 struct resource *hsc_seb_res;
81 struct resource *hsc_etx_res;
82 struct resource *hsc_erx_res;
83 struct resource *hsc_mac_res;
84 struct resource *hsc_mif_res;
85 struct resource *hsc_ires;
86 void *hsc_ih;
87 };
88
89 static int hme_sbus_probe(device_t);
90 static int hme_sbus_attach(device_t);
91 static int hme_sbus_detach(device_t);
92 static int hme_sbus_suspend(device_t);
93 static int hme_sbus_resume(device_t);
94
95 static device_method_t hme_sbus_methods[] = {
96 /* Device interface */
97 DEVMETHOD(device_probe, hme_sbus_probe),
98 DEVMETHOD(device_attach, hme_sbus_attach),
99 DEVMETHOD(device_detach, hme_sbus_detach),
100 DEVMETHOD(device_suspend, hme_sbus_suspend),
101 DEVMETHOD(device_resume, hme_sbus_resume),
102 /* Can just use the suspend method here. */
103 DEVMETHOD(device_shutdown, hme_sbus_suspend),
104
105 /* bus interface */
106 DEVMETHOD(bus_print_child, bus_generic_print_child),
107 DEVMETHOD(bus_driver_added, bus_generic_driver_added),
108
109 /* MII interface */
110 DEVMETHOD(miibus_readreg, hme_mii_readreg),
111 DEVMETHOD(miibus_writereg, hme_mii_writereg),
112 DEVMETHOD(miibus_statchg, hme_mii_statchg),
113
114 { 0, 0 }
115 };
116
117 static driver_t hme_sbus_driver = {
118 "hme",
119 hme_sbus_methods,
120 sizeof(struct hme_sbus_softc)
121 };
122
123 DRIVER_MODULE(hme, sbus, hme_sbus_driver, hme_devclass, 0, 0);
124 MODULE_DEPEND(hme, sbus, 1, 1, 1);
125 MODULE_DEPEND(hme, ether, 1, 1, 1);
126
127 static int
128 hme_sbus_probe(device_t dev)
129 {
130 const char *name;
131
132 name = ofw_bus_get_name(dev);
133 if (strcmp(name, "SUNW,qfe") == 0 ||
134 strcmp(name, "SUNW,hme") == 0) {
135 device_set_desc(dev, "Sun HME 10/100 Ethernet");
136 return (0);
137 }
138 return (ENXIO);
139 }
140
141 static int
142 hme_sbus_attach(device_t dev)
143 {
144 struct hme_sbus_softc *hsc;
145 struct hme_softc *sc;
146 u_long start, count;
147 uint32_t burst;
148 int i, error = 0;
149
150 hsc = device_get_softc(dev);
151 sc = &hsc->hsc_hme;
152 mtx_init(&sc->sc_lock, device_get_nameunit(dev), MTX_NETWORK_LOCK,
153 MTX_DEF);
154 /*
155 * Map five register banks:
156 *
157 * bank 0: HME SEB registers
158 * bank 1: HME ETX registers
159 * bank 2: HME ERX registers
160 * bank 3: HME MAC registers
161 * bank 4: HME MIF registers
162 *
163 */
164 i = 0;
165 hsc->hsc_seb_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
166 &i, RF_ACTIVE);
167 if (hsc->hsc_seb_res == NULL) {
168 device_printf(dev, "cannot map SEB registers\n");
169 error = ENXIO;
170 goto fail_mtx_res;
171 }
172 sc->sc_sebt = rman_get_bustag(hsc->hsc_seb_res);
173 sc->sc_sebh = rman_get_bushandle(hsc->hsc_seb_res);
174
175 i = 1;
176 hsc->hsc_etx_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
177 &i, RF_ACTIVE);
178 if (hsc->hsc_etx_res == NULL) {
179 device_printf(dev, "cannot map ETX registers\n");
180 error = ENXIO;
181 goto fail_seb_res;
182 }
183 sc->sc_etxt = rman_get_bustag(hsc->hsc_etx_res);
184 sc->sc_etxh = rman_get_bushandle(hsc->hsc_etx_res);
185
186 i = 2;
187 hsc->hsc_erx_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
188 &i, RF_ACTIVE);
189 if (hsc->hsc_erx_res == NULL) {
190 device_printf(dev, "cannot map ERX registers\n");
191 error = ENXIO;
192 goto fail_etx_res;
193 }
194 sc->sc_erxt = rman_get_bustag(hsc->hsc_erx_res);
195 sc->sc_erxh = rman_get_bushandle(hsc->hsc_erx_res);
196
197 i = 3;
198 hsc->hsc_mac_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
199 &i, RF_ACTIVE);
200 if (hsc->hsc_mac_res == NULL) {
201 device_printf(dev, "cannot map MAC registers\n");
202 error = ENXIO;
203 goto fail_erx_res;
204 }
205 sc->sc_mact = rman_get_bustag(hsc->hsc_mac_res);
206 sc->sc_mach = rman_get_bushandle(hsc->hsc_mac_res);
207
208 /*
209 * At least on some HMEs, the MIF registers seem to be inside the MAC
210 * range, so try to kludge around it.
211 */
212 i = 4;
213 hsc->hsc_mif_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
214 &i, RF_ACTIVE);
215 if (hsc->hsc_mif_res == NULL) {
216 if (bus_get_resource(dev, SYS_RES_MEMORY, i,
217 &start, &count) != 0) {
218 device_printf(dev, "cannot get MIF registers\n");
219 error = ENXIO;
220 goto fail_mac_res;
221 }
222 if (start < rman_get_start(hsc->hsc_mac_res) ||
223 start + count - 1 > rman_get_end(hsc->hsc_mac_res)) {
224 device_printf(dev, "cannot move MIF registers to MAC "
225 "bank\n");
226 error = ENXIO;
227 goto fail_mac_res;
228 }
229 sc->sc_mift = sc->sc_mact;
230 bus_space_subregion(sc->sc_mact, sc->sc_mach,
231 start - rman_get_start(hsc->hsc_mac_res), count,
232 &sc->sc_mifh);
233 } else {
234 sc->sc_mift = rman_get_bustag(hsc->hsc_mif_res);
235 sc->sc_mifh = rman_get_bushandle(hsc->hsc_mif_res);
236 }
237
238 i = 0;
239 hsc->hsc_ires = bus_alloc_resource_any(dev, SYS_RES_IRQ,
240 &i, RF_SHAREABLE | RF_ACTIVE);
241 if (hsc->hsc_ires == NULL) {
242 device_printf(dev, "could not allocate interrupt\n");
243 error = ENXIO;
244 goto fail_mif_res;
245 }
246
247 OF_getetheraddr(dev, sc->sc_enaddr);
248
249 burst = sbus_get_burstsz(dev);
250 /* Translate into plain numerical format */
251 if ((burst & SBUS_BURST_64))
252 sc->sc_burst = 64;
253 else if ((burst & SBUS_BURST_32))
254 sc->sc_burst = 32;
255 else if ((burst & SBUS_BURST_16))
256 sc->sc_burst = 16;
257 else
258 sc->sc_burst = 0;
259
260 sc->sc_dev = dev;
261 sc->sc_flags = 0;
262
263 if ((error = hme_config(sc)) != 0) {
264 device_printf(dev, "could not be configured\n");
265 goto fail_ires;
266 }
267
268 if ((error = bus_setup_intr(dev, hsc->hsc_ires, INTR_TYPE_NET |
269 INTR_MPSAFE, NULL, hme_intr, sc, &hsc->hsc_ih)) != 0) {
270 device_printf(dev, "couldn't establish interrupt\n");
271 hme_detach(sc);
272 goto fail_ires;
273 }
274 return (0);
275
276 fail_ires:
277 bus_release_resource(dev, SYS_RES_IRQ,
278 rman_get_rid(hsc->hsc_ires), hsc->hsc_ires);
279 fail_mif_res:
280 if (hsc->hsc_mif_res != NULL) {
281 bus_release_resource(dev, SYS_RES_MEMORY,
282 rman_get_rid(hsc->hsc_mif_res), hsc->hsc_mif_res);
283 }
284 fail_mac_res:
285 bus_release_resource(dev, SYS_RES_MEMORY,
286 rman_get_rid(hsc->hsc_mac_res), hsc->hsc_mac_res);
287 fail_erx_res:
288 bus_release_resource(dev, SYS_RES_MEMORY,
289 rman_get_rid(hsc->hsc_erx_res), hsc->hsc_erx_res);
290 fail_etx_res:
291 bus_release_resource(dev, SYS_RES_MEMORY,
292 rman_get_rid(hsc->hsc_etx_res), hsc->hsc_etx_res);
293 fail_seb_res:
294 bus_release_resource(dev, SYS_RES_MEMORY,
295 rman_get_rid(hsc->hsc_seb_res), hsc->hsc_seb_res);
296 fail_mtx_res:
297 mtx_destroy(&sc->sc_lock);
298 return (error);
299 }
300
301 static int
302 hme_sbus_detach(device_t dev)
303 {
304 struct hme_sbus_softc *hsc;
305 struct hme_softc *sc;
306
307 hsc = device_get_softc(dev);
308 sc = &hsc->hsc_hme;
309 bus_teardown_intr(dev, hsc->hsc_ires, hsc->hsc_ih);
310 hme_detach(sc);
311 bus_release_resource(dev, SYS_RES_IRQ,
312 rman_get_rid(hsc->hsc_ires), hsc->hsc_ires);
313 if (hsc->hsc_mif_res != NULL) {
314 bus_release_resource(dev, SYS_RES_MEMORY,
315 rman_get_rid(hsc->hsc_mif_res), hsc->hsc_mif_res);
316 }
317 bus_release_resource(dev, SYS_RES_MEMORY,
318 rman_get_rid(hsc->hsc_mac_res), hsc->hsc_mac_res);
319 bus_release_resource(dev, SYS_RES_MEMORY,
320 rman_get_rid(hsc->hsc_erx_res), hsc->hsc_erx_res);
321 bus_release_resource(dev, SYS_RES_MEMORY,
322 rman_get_rid(hsc->hsc_etx_res), hsc->hsc_etx_res);
323 bus_release_resource(dev, SYS_RES_MEMORY,
324 rman_get_rid(hsc->hsc_seb_res), hsc->hsc_seb_res);
325 mtx_destroy(&sc->sc_lock);
326 return (0);
327 }
328
329 static int
330 hme_sbus_suspend(device_t dev)
331 {
332 struct hme_sbus_softc *hsc;
333
334 hsc = device_get_softc(dev);
335 hme_suspend(&hsc->hsc_hme);
336 return (0);
337 }
338
339 static int
340 hme_sbus_resume(device_t dev)
341 {
342 struct hme_sbus_softc *hsc;
343
344 hsc = device_get_softc(dev);
345 hme_resume(&hsc->hsc_hme);
346 return (0);
347 }
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