1/*
2 * Copyright (c) 1997, 1998, 1999
3 * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Bill Paul.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
30 * THE POSSIBILITY OF SUCH DAMAGE.
31 *
| 1/*
2 * Copyright (c) 1997, 1998, 1999
3 * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Bill Paul.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
30 * THE POSSIBILITY OF SUCH DAMAGE.
31 *
|
32 * $FreeBSD: head/sys/dev/mii/rlphy.c 95667 2002-04-28 19:25:07Z phk $
| 32 * $FreeBSD: head/sys/dev/mii/rlphy.c 95722 2002-04-29 13:07:38Z phk $
|
33 */
34
35/*
36 * driver for RealTek 8139 internal PHYs
37 */
38
39#include <sys/param.h>
40#include <sys/systm.h>
41#include <sys/kernel.h>
42#include <sys/socket.h>
43#include <sys/bus.h>
44
45#include <net/if.h>
46#include <net/if_arp.h>
47#include <net/if_media.h>
48
49#include <dev/mii/mii.h>
50#include <dev/mii/miivar.h>
51#include <dev/mii/miidevs.h>
52
53#include <machine/bus.h>
54#include <pci/if_rlreg.h>
55
56#include "miibus_if.h"
57
58#if !defined(lint)
59static const char rcsid[] =
| 33 */
34
35/*
36 * driver for RealTek 8139 internal PHYs
37 */
38
39#include <sys/param.h>
40#include <sys/systm.h>
41#include <sys/kernel.h>
42#include <sys/socket.h>
43#include <sys/bus.h>
44
45#include <net/if.h>
46#include <net/if_arp.h>
47#include <net/if_media.h>
48
49#include <dev/mii/mii.h>
50#include <dev/mii/miivar.h>
51#include <dev/mii/miidevs.h>
52
53#include <machine/bus.h>
54#include <pci/if_rlreg.h>
55
56#include "miibus_if.h"
57
58#if !defined(lint)
59static const char rcsid[] =
|
60 "$FreeBSD: head/sys/dev/mii/rlphy.c 95667 2002-04-28 19:25:07Z phk $";
| 60 "$FreeBSD: head/sys/dev/mii/rlphy.c 95722 2002-04-29 13:07:38Z phk $";
|
61#endif
62
63static int rlphy_probe (device_t);
64static int rlphy_attach (device_t);
| 61#endif
62
63static int rlphy_probe (device_t);
64static int rlphy_attach (device_t);
|
65static int rlphy_detach (device_t);
| |
66
67static device_method_t rlphy_methods[] = {
68 /* device interface */
69 DEVMETHOD(device_probe, rlphy_probe),
70 DEVMETHOD(device_attach, rlphy_attach),
| 65
66static device_method_t rlphy_methods[] = {
67 /* device interface */
68 DEVMETHOD(device_probe, rlphy_probe),
69 DEVMETHOD(device_attach, rlphy_attach),
|
71 DEVMETHOD(device_detach, rlphy_detach),
| 70 DEVMETHOD(device_detach, mii_phy_detach),
|
72 DEVMETHOD(device_shutdown, bus_generic_shutdown),
73 { 0, 0 }
74};
75
76static devclass_t rlphy_devclass;
77
78static driver_t rlphy_driver = {
79 "rlphy",
80 rlphy_methods,
81 sizeof(struct mii_softc)
82};
83
84DRIVER_MODULE(rlphy, miibus, rlphy_driver, rlphy_devclass, 0, 0);
85
86static int rlphy_service(struct mii_softc *, struct mii_data *, int);
87static void rlphy_status(struct mii_softc *);
88
89static int rlphy_probe(dev)
90 device_t dev;
91{
92 struct mii_attach_args *ma;
93 device_t parent;
94
95 ma = device_get_ivars(dev);
96 parent = device_get_parent(device_get_parent(dev));
97
98 /* Test for RealTek 8201L PHY */
99 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_REALTEK &&
100 MII_MODEL(ma->mii_id2) == MII_MODEL_REALTEK_RTL8201L) {
101 device_set_desc(dev, MII_STR_REALTEK_RTL8201L);
102 return(0);
103 }
104
105 /*
106 * RealTek PHY doesn't have vendor/device ID registers:
107 * the rl driver fakes up a return value of all zeros.
108 */
109 if (MII_OUI(ma->mii_id1, ma->mii_id2) != 0 ||
110 MII_MODEL(ma->mii_id2) != 0)
111 return (ENXIO);
112
113 /*
114 * Make sure the parent is an `rl'.
115 */
116 if (strcmp(device_get_name(parent), "rl") != 0)
117 return (ENXIO);
118
119 device_set_desc(dev, "RealTek internal media interface");
120
121 return (0);
122}
123
124static int rlphy_attach(dev)
125 device_t dev;
126{
127 struct mii_softc *sc;
128 struct mii_attach_args *ma;
129 struct mii_data *mii;
130
131 sc = device_get_softc(dev);
132 ma = device_get_ivars(dev);
133 sc->mii_dev = device_get_parent(dev);
134 mii = device_get_softc(sc->mii_dev);
135
136 /*
137 * The RealTek PHY can never be isolated, so never allow non-zero
138 * instances!
139 */
140 if (mii->mii_instance != 0) {
141 device_printf(dev, "ignoring this PHY, non-zero instance\n");
142 return(ENXIO);
143 }
144
145 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
146
147 sc->mii_inst = mii->mii_instance;
148 sc->mii_phy = ma->mii_phyno;
149 sc->mii_service = rlphy_service;
150 sc->mii_pdata = mii;
151 mii->mii_instance++;
152
153 sc->mii_flags |= MIIF_NOISOLATE;
154
155#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
156
157#if 0 /* See above. */
158 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
159 BMCR_ISO);
160#endif
161
162 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst),
163 BMCR_LOOP|BMCR_S100);
164
165 mii_phy_reset(sc);
166
167 sc->mii_capabilities =
168 PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
169 device_printf(dev, " ");
170 mii_add_media(sc);
171 printf("\n");
172#undef ADD
173 MIIBUS_MEDIAINIT(sc->mii_dev);
174 return(0);
175}
176
| 71 DEVMETHOD(device_shutdown, bus_generic_shutdown),
72 { 0, 0 }
73};
74
75static devclass_t rlphy_devclass;
76
77static driver_t rlphy_driver = {
78 "rlphy",
79 rlphy_methods,
80 sizeof(struct mii_softc)
81};
82
83DRIVER_MODULE(rlphy, miibus, rlphy_driver, rlphy_devclass, 0, 0);
84
85static int rlphy_service(struct mii_softc *, struct mii_data *, int);
86static void rlphy_status(struct mii_softc *);
87
88static int rlphy_probe(dev)
89 device_t dev;
90{
91 struct mii_attach_args *ma;
92 device_t parent;
93
94 ma = device_get_ivars(dev);
95 parent = device_get_parent(device_get_parent(dev));
96
97 /* Test for RealTek 8201L PHY */
98 if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_REALTEK &&
99 MII_MODEL(ma->mii_id2) == MII_MODEL_REALTEK_RTL8201L) {
100 device_set_desc(dev, MII_STR_REALTEK_RTL8201L);
101 return(0);
102 }
103
104 /*
105 * RealTek PHY doesn't have vendor/device ID registers:
106 * the rl driver fakes up a return value of all zeros.
107 */
108 if (MII_OUI(ma->mii_id1, ma->mii_id2) != 0 ||
109 MII_MODEL(ma->mii_id2) != 0)
110 return (ENXIO);
111
112 /*
113 * Make sure the parent is an `rl'.
114 */
115 if (strcmp(device_get_name(parent), "rl") != 0)
116 return (ENXIO);
117
118 device_set_desc(dev, "RealTek internal media interface");
119
120 return (0);
121}
122
123static int rlphy_attach(dev)
124 device_t dev;
125{
126 struct mii_softc *sc;
127 struct mii_attach_args *ma;
128 struct mii_data *mii;
129
130 sc = device_get_softc(dev);
131 ma = device_get_ivars(dev);
132 sc->mii_dev = device_get_parent(dev);
133 mii = device_get_softc(sc->mii_dev);
134
135 /*
136 * The RealTek PHY can never be isolated, so never allow non-zero
137 * instances!
138 */
139 if (mii->mii_instance != 0) {
140 device_printf(dev, "ignoring this PHY, non-zero instance\n");
141 return(ENXIO);
142 }
143
144 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
145
146 sc->mii_inst = mii->mii_instance;
147 sc->mii_phy = ma->mii_phyno;
148 sc->mii_service = rlphy_service;
149 sc->mii_pdata = mii;
150 mii->mii_instance++;
151
152 sc->mii_flags |= MIIF_NOISOLATE;
153
154#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
155
156#if 0 /* See above. */
157 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
158 BMCR_ISO);
159#endif
160
161 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst),
162 BMCR_LOOP|BMCR_S100);
163
164 mii_phy_reset(sc);
165
166 sc->mii_capabilities =
167 PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
168 device_printf(dev, " ");
169 mii_add_media(sc);
170 printf("\n");
171#undef ADD
172 MIIBUS_MEDIAINIT(sc->mii_dev);
173 return(0);
174}
175
|
177static int rlphy_detach(dev)
178 device_t dev;
179{
180 struct mii_softc *sc;
181 struct mii_data *mii;
182
183 sc = device_get_softc(dev);
184 mii = device_get_softc(device_get_softc(dev));
185 mii_phy_auto_stop(sc);
186 sc->mii_dev = NULL;
187 LIST_REMOVE(sc, mii_list);
188
189 return(0);
190}
191
| |
192static int
193rlphy_service(sc, mii, cmd)
194 struct mii_softc *sc;
195 struct mii_data *mii;
196 int cmd;
197{
198 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
199
200 /*
201 * We can't isolate the RealTek PHY, so it has to be the only one!
202 */
203 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
204 panic("rlphy_service: can't isolate RealTek PHY");
205
206 switch (cmd) {
207 case MII_POLLSTAT:
208 break;
209
210 case MII_MEDIACHG:
211 /*
212 * If the interface is not up, don't do anything.
213 */
214 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
215 break;
216
217 switch (IFM_SUBTYPE(ife->ifm_media)) {
218 case IFM_AUTO:
219 /*
220 * If we're already in auto mode, just return.
221 */
222 if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN)
223 return (0);
224 (void) mii_phy_auto(sc, 0);
225 break;
226 case IFM_100_T4:
227 /*
228 * XXX Not supported as a manual setting right now.
229 */
230 return (EINVAL);
231 default:
232 /*
233 * BMCR data is stored in the ifmedia entry.
234 */
235 PHY_WRITE(sc, MII_ANAR,
236 mii_anar(ife->ifm_media));
237 PHY_WRITE(sc, MII_BMCR, ife->ifm_data);
238 }
239 break;
240
241 case MII_TICK:
242 /*
243 * Is the interface even up?
244 */
245 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
246 return (0);
247
248 /*
249 * Only used for autonegotiation.
250 */
251 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
252 break;
253
254 /*
255 * The RealTek PHY's autonegotiation doesn't need to be
256 * kicked; it continues in the background.
257 */
258 break;
259 }
260
261 /* Update the media status. */
262 rlphy_status(sc);
263
264 /* Callback if something changed. */
265 mii_phy_update(sc, cmd);
266 return (0);
267}
268
269void
270rlphy_status(phy)
271 struct mii_softc *phy;
272{
273 struct mii_data *mii = phy->mii_pdata;
274 int bmsr, bmcr, anlpar;
275 device_t parent;
276
277 mii->mii_media_status = IFM_AVALID;
278 mii->mii_media_active = IFM_ETHER;
279
280 bmsr = PHY_READ(phy, MII_BMSR) | PHY_READ(phy, MII_BMSR);
281 if (bmsr & BMSR_LINK)
282 mii->mii_media_status |= IFM_ACTIVE;
283
284 bmcr = PHY_READ(phy, MII_BMCR);
285 if (bmcr & BMCR_ISO) {
286 mii->mii_media_active |= IFM_NONE;
287 mii->mii_media_status = 0;
288 return;
289 }
290
291 if (bmcr & BMCR_LOOP)
292 mii->mii_media_active |= IFM_LOOP;
293
294 if (bmcr & BMCR_AUTOEN) {
295 /*
296 * NWay autonegotiation takes the highest-order common
297 * bit of the ANAR and ANLPAR (i.e. best media advertised
298 * both by us and our link partner).
299 */
300 if ((bmsr & BMSR_ACOMP) == 0) {
301 /* Erg, still trying, I guess... */
302 mii->mii_media_active |= IFM_NONE;
303 return;
304 }
305
306 if ((anlpar = PHY_READ(phy, MII_ANAR) &
307 PHY_READ(phy, MII_ANLPAR))) {
308 if (anlpar & ANLPAR_T4)
309 mii->mii_media_active |= IFM_100_T4;
310 else if (anlpar & ANLPAR_TX_FD)
311 mii->mii_media_active |= IFM_100_TX|IFM_FDX;
312 else if (anlpar & ANLPAR_TX)
313 mii->mii_media_active |= IFM_100_TX;
314 else if (anlpar & ANLPAR_10_FD)
315 mii->mii_media_active |= IFM_10_T|IFM_FDX;
316 else if (anlpar & ANLPAR_10)
317 mii->mii_media_active |= IFM_10_T;
318 else
319 mii->mii_media_active |= IFM_NONE;
320 return;
321 }
322 /*
323 * If the other side doesn't support NWAY, then the
324 * best we can do is determine if we have a 10Mbps or
325 * 100Mbps link. There's no way to know if the link
326 * is full or half duplex, so we default to half duplex
327 * and hope that the user is clever enough to manually
328 * change the media settings if we're wrong.
329 */
330
331
332 /*
333 * The RealTek PHY supports non-NWAY link speed
334 * detection, however it does not report the link
335 * detection results via the ANLPAR or BMSR registers.
336 * (What? RealTek doesn't do things the way everyone
337 * else does? I'm just shocked, shocked I tell you.)
338 * To determine the link speed, we have to do one
339 * of two things:
340 *
341 * - If this is a standalone RealTek RTL8201(L) PHY,
342 * we can determine the link speed by testing bit 0
343 * in the magic, vendor-specific register at offset
344 * 0x19.
345 *
346 * - If this is a RealTek MAC with integrated PHY, we
347 * can test the 'SPEED10' bit of the MAC's media status
348 * register.
349 */
350 parent = device_get_parent(phy->mii_dev);
351 if (strcmp(device_get_name(parent), "rl") != 0) {
352 if (PHY_READ(phy, 0x0019) & 0x01)
353 mii->mii_media_active |= IFM_100_TX;
354 else
355 mii->mii_media_active |= IFM_10_T;
356 } else {
357 if (PHY_READ(phy, RL_MEDIASTAT) &
358 RL_MEDIASTAT_SPEED10)
359 mii->mii_media_active |= IFM_10_T;
360 else
361 mii->mii_media_active |= IFM_100_TX;
362 }
363
364 } else
365 mii->mii_media_active = mii_media_from_bmcr(bmcr);
366}
| 176static int
177rlphy_service(sc, mii, cmd)
178 struct mii_softc *sc;
179 struct mii_data *mii;
180 int cmd;
181{
182 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
183
184 /*
185 * We can't isolate the RealTek PHY, so it has to be the only one!
186 */
187 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
188 panic("rlphy_service: can't isolate RealTek PHY");
189
190 switch (cmd) {
191 case MII_POLLSTAT:
192 break;
193
194 case MII_MEDIACHG:
195 /*
196 * If the interface is not up, don't do anything.
197 */
198 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
199 break;
200
201 switch (IFM_SUBTYPE(ife->ifm_media)) {
202 case IFM_AUTO:
203 /*
204 * If we're already in auto mode, just return.
205 */
206 if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN)
207 return (0);
208 (void) mii_phy_auto(sc, 0);
209 break;
210 case IFM_100_T4:
211 /*
212 * XXX Not supported as a manual setting right now.
213 */
214 return (EINVAL);
215 default:
216 /*
217 * BMCR data is stored in the ifmedia entry.
218 */
219 PHY_WRITE(sc, MII_ANAR,
220 mii_anar(ife->ifm_media));
221 PHY_WRITE(sc, MII_BMCR, ife->ifm_data);
222 }
223 break;
224
225 case MII_TICK:
226 /*
227 * Is the interface even up?
228 */
229 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
230 return (0);
231
232 /*
233 * Only used for autonegotiation.
234 */
235 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
236 break;
237
238 /*
239 * The RealTek PHY's autonegotiation doesn't need to be
240 * kicked; it continues in the background.
241 */
242 break;
243 }
244
245 /* Update the media status. */
246 rlphy_status(sc);
247
248 /* Callback if something changed. */
249 mii_phy_update(sc, cmd);
250 return (0);
251}
252
253void
254rlphy_status(phy)
255 struct mii_softc *phy;
256{
257 struct mii_data *mii = phy->mii_pdata;
258 int bmsr, bmcr, anlpar;
259 device_t parent;
260
261 mii->mii_media_status = IFM_AVALID;
262 mii->mii_media_active = IFM_ETHER;
263
264 bmsr = PHY_READ(phy, MII_BMSR) | PHY_READ(phy, MII_BMSR);
265 if (bmsr & BMSR_LINK)
266 mii->mii_media_status |= IFM_ACTIVE;
267
268 bmcr = PHY_READ(phy, MII_BMCR);
269 if (bmcr & BMCR_ISO) {
270 mii->mii_media_active |= IFM_NONE;
271 mii->mii_media_status = 0;
272 return;
273 }
274
275 if (bmcr & BMCR_LOOP)
276 mii->mii_media_active |= IFM_LOOP;
277
278 if (bmcr & BMCR_AUTOEN) {
279 /*
280 * NWay autonegotiation takes the highest-order common
281 * bit of the ANAR and ANLPAR (i.e. best media advertised
282 * both by us and our link partner).
283 */
284 if ((bmsr & BMSR_ACOMP) == 0) {
285 /* Erg, still trying, I guess... */
286 mii->mii_media_active |= IFM_NONE;
287 return;
288 }
289
290 if ((anlpar = PHY_READ(phy, MII_ANAR) &
291 PHY_READ(phy, MII_ANLPAR))) {
292 if (anlpar & ANLPAR_T4)
293 mii->mii_media_active |= IFM_100_T4;
294 else if (anlpar & ANLPAR_TX_FD)
295 mii->mii_media_active |= IFM_100_TX|IFM_FDX;
296 else if (anlpar & ANLPAR_TX)
297 mii->mii_media_active |= IFM_100_TX;
298 else if (anlpar & ANLPAR_10_FD)
299 mii->mii_media_active |= IFM_10_T|IFM_FDX;
300 else if (anlpar & ANLPAR_10)
301 mii->mii_media_active |= IFM_10_T;
302 else
303 mii->mii_media_active |= IFM_NONE;
304 return;
305 }
306 /*
307 * If the other side doesn't support NWAY, then the
308 * best we can do is determine if we have a 10Mbps or
309 * 100Mbps link. There's no way to know if the link
310 * is full or half duplex, so we default to half duplex
311 * and hope that the user is clever enough to manually
312 * change the media settings if we're wrong.
313 */
314
315
316 /*
317 * The RealTek PHY supports non-NWAY link speed
318 * detection, however it does not report the link
319 * detection results via the ANLPAR or BMSR registers.
320 * (What? RealTek doesn't do things the way everyone
321 * else does? I'm just shocked, shocked I tell you.)
322 * To determine the link speed, we have to do one
323 * of two things:
324 *
325 * - If this is a standalone RealTek RTL8201(L) PHY,
326 * we can determine the link speed by testing bit 0
327 * in the magic, vendor-specific register at offset
328 * 0x19.
329 *
330 * - If this is a RealTek MAC with integrated PHY, we
331 * can test the 'SPEED10' bit of the MAC's media status
332 * register.
333 */
334 parent = device_get_parent(phy->mii_dev);
335 if (strcmp(device_get_name(parent), "rl") != 0) {
336 if (PHY_READ(phy, 0x0019) & 0x01)
337 mii->mii_media_active |= IFM_100_TX;
338 else
339 mii->mii_media_active |= IFM_10_T;
340 } else {
341 if (PHY_READ(phy, RL_MEDIASTAT) &
342 RL_MEDIASTAT_SPEED10)
343 mii->mii_media_active |= IFM_10_T;
344 else
345 mii->mii_media_active |= IFM_100_TX;
346 }
347
348 } else
349 mii->mii_media_active = mii_media_from_bmcr(bmcr);
350}
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