1 /*-
2 * Copyright (c) 2006, Pyun YongHyeon <yongari@FreeBSD.org>
3 * 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 unmodified, this list of conditions, and the following
10 * disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 */
28
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
31
32 /*
33 * Driver for the IC Plus IP1000A/IP1001 10/100/1000 PHY.
34 */
35
36 #include <sys/param.h>
37 #include <sys/systm.h>
38 #include <sys/kernel.h>
39 #include <sys/module.h>
40 #include <sys/socket.h>
41 #include <sys/taskqueue.h>
42 #include <sys/bus.h>
43
44 #include <net/if.h>
45 #include <net/if_var.h>
46 #include <net/if_media.h>
47
48 #include <dev/mii/mii.h>
49 #include <dev/mii/miivar.h>
50 #include "miidevs.h"
51
52 #include <dev/mii/ip1000phyreg.h>
53
54 #include "miibus_if.h"
55
56 #include <machine/bus.h>
57 #include <dev/stge/if_stgereg.h>
58
59 static int ip1000phy_probe(device_t);
60 static int ip1000phy_attach(device_t);
61
62 static device_method_t ip1000phy_methods[] = {
63 /* device interface */
64 DEVMETHOD(device_probe, ip1000phy_probe),
65 DEVMETHOD(device_attach, ip1000phy_attach),
66 DEVMETHOD(device_detach, mii_phy_detach),
67 DEVMETHOD(device_shutdown, bus_generic_shutdown),
68 DEVMETHOD_END
69 };
70
71 static devclass_t ip1000phy_devclass;
72 static driver_t ip1000phy_driver = {
73 "ip1000phy",
74 ip1000phy_methods,
75 sizeof(struct mii_softc)
76 };
77
78 DRIVER_MODULE(ip1000phy, miibus, ip1000phy_driver, ip1000phy_devclass, 0, 0);
79
80 static int ip1000phy_service(struct mii_softc *, struct mii_data *, int);
81 static void ip1000phy_status(struct mii_softc *);
82 static void ip1000phy_reset(struct mii_softc *);
83 static int ip1000phy_mii_phy_auto(struct mii_softc *, int);
84
85 static const struct mii_phydesc ip1000phys[] = {
86 MII_PHY_DESC(xxICPLUS, IP1000A),
87 MII_PHY_DESC(xxICPLUS, IP1001),
88 MII_PHY_END
89 };
90
91 static const struct mii_phy_funcs ip1000phy_funcs = {
92 ip1000phy_service,
93 ip1000phy_status,
94 ip1000phy_reset
95 };
96
97 static int
ip1000phy_probe(device_t dev)98 ip1000phy_probe(device_t dev)
99 {
100
101 return (mii_phy_dev_probe(dev, ip1000phys, BUS_PROBE_DEFAULT));
102 }
103
104 static int
ip1000phy_attach(device_t dev)105 ip1000phy_attach(device_t dev)
106 {
107 struct mii_attach_args *ma;
108 u_int flags;
109
110 ma = device_get_ivars(dev);
111 flags = MIIF_NOISOLATE | MIIF_NOMANPAUSE;
112 if (MII_MODEL(ma->mii_id2) == MII_MODEL_xxICPLUS_IP1000A &&
113 mii_dev_mac_match(dev, "stge") &&
114 (miibus_get_flags(dev) & MIIF_MACPRIV0) != 0)
115 flags |= MIIF_PHYPRIV0;
116 mii_phy_dev_attach(dev, flags, &ip1000phy_funcs, 1);
117 return (0);
118 }
119
120 static int
ip1000phy_service(struct mii_softc * sc,struct mii_data * mii,int cmd)121 ip1000phy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
122 {
123 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
124 uint32_t gig, reg, speed;
125
126 switch (cmd) {
127 case MII_POLLSTAT:
128 break;
129
130 case MII_MEDIACHG:
131 PHY_RESET(sc);
132 switch (IFM_SUBTYPE(ife->ifm_media)) {
133 case IFM_AUTO:
134 (void)ip1000phy_mii_phy_auto(sc, ife->ifm_media);
135 goto done;
136
137 case IFM_1000_T:
138 /*
139 * XXX
140 * Manual 1000baseT setting doesn't seem to work.
141 */
142 speed = IP1000PHY_BMCR_1000;
143 break;
144
145 case IFM_100_TX:
146 speed = IP1000PHY_BMCR_100;
147 break;
148
149 case IFM_10_T:
150 speed = IP1000PHY_BMCR_10;
151 break;
152
153 default:
154 return (EINVAL);
155 }
156
157 if ((ife->ifm_media & IFM_FDX) != 0) {
158 speed |= IP1000PHY_BMCR_FDX;
159 gig = IP1000PHY_1000CR_1000T_FDX;
160 } else
161 gig = IP1000PHY_1000CR_1000T;
162
163 if (IFM_SUBTYPE(ife->ifm_media) == IFM_1000_T) {
164 gig |=
165 IP1000PHY_1000CR_MASTER | IP1000PHY_1000CR_MANUAL;
166 if ((ife->ifm_media & IFM_ETH_MASTER) != 0)
167 gig |= IP1000PHY_1000CR_MMASTER;
168 } else
169 gig = 0;
170 PHY_WRITE(sc, IP1000PHY_MII_1000CR, gig);
171 PHY_WRITE(sc, IP1000PHY_MII_BMCR, speed);
172
173 done:
174 break;
175
176 case MII_TICK:
177 /*
178 * Only used for autonegotiation.
179 */
180 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) {
181 sc->mii_ticks = 0;
182 break;
183 }
184
185 /*
186 * check for link.
187 */
188 reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
189 if (reg & BMSR_LINK) {
190 sc->mii_ticks = 0;
191 break;
192 }
193
194 /* Announce link loss right after it happens */
195 if (sc->mii_ticks++ == 0)
196 break;
197
198 /*
199 * Only retry autonegotiation every mii_anegticks seconds.
200 */
201 if (sc->mii_ticks <= sc->mii_anegticks)
202 break;
203
204 sc->mii_ticks = 0;
205 ip1000phy_mii_phy_auto(sc, ife->ifm_media);
206 break;
207 }
208
209 /* Update the media status. */
210 PHY_STATUS(sc);
211
212 /* Callback if something changed. */
213 mii_phy_update(sc, cmd);
214 return (0);
215 }
216
217 static void
ip1000phy_status(struct mii_softc * sc)218 ip1000phy_status(struct mii_softc *sc)
219 {
220 struct mii_data *mii = sc->mii_pdata;
221 uint32_t bmsr, bmcr, stat;
222
223 mii->mii_media_status = IFM_AVALID;
224 mii->mii_media_active = IFM_ETHER;
225
226 bmsr = PHY_READ(sc, IP1000PHY_MII_BMSR) |
227 PHY_READ(sc, IP1000PHY_MII_BMSR);
228 if ((bmsr & IP1000PHY_BMSR_LINK) != 0)
229 mii->mii_media_status |= IFM_ACTIVE;
230
231 bmcr = PHY_READ(sc, IP1000PHY_MII_BMCR);
232 if ((bmcr & IP1000PHY_BMCR_LOOP) != 0)
233 mii->mii_media_active |= IFM_LOOP;
234
235 if ((bmcr & IP1000PHY_BMCR_AUTOEN) != 0) {
236 if ((bmsr & IP1000PHY_BMSR_ANEGCOMP) == 0) {
237 /* Erg, still trying, I guess... */
238 mii->mii_media_active |= IFM_NONE;
239 return;
240 }
241 }
242
243 if (sc->mii_mpd_model == MII_MODEL_xxICPLUS_IP1001) {
244 stat = PHY_READ(sc, IP1000PHY_LSR);
245 switch (stat & IP1000PHY_LSR_SPEED_MASK) {
246 case IP1000PHY_LSR_SPEED_10:
247 mii->mii_media_active |= IFM_10_T;
248 break;
249 case IP1000PHY_LSR_SPEED_100:
250 mii->mii_media_active |= IFM_100_TX;
251 break;
252 case IP1000PHY_LSR_SPEED_1000:
253 mii->mii_media_active |= IFM_1000_T;
254 break;
255 default:
256 mii->mii_media_active |= IFM_NONE;
257 return;
258 }
259 if ((stat & IP1000PHY_LSR_FULL_DUPLEX) != 0)
260 mii->mii_media_active |= IFM_FDX;
261 else
262 mii->mii_media_active |= IFM_HDX;
263 } else {
264 stat = PHY_READ(sc, STGE_PhyCtrl);
265 switch (PC_LinkSpeed(stat)) {
266 case PC_LinkSpeed_Down:
267 mii->mii_media_active |= IFM_NONE;
268 return;
269 case PC_LinkSpeed_10:
270 mii->mii_media_active |= IFM_10_T;
271 break;
272 case PC_LinkSpeed_100:
273 mii->mii_media_active |= IFM_100_TX;
274 break;
275 case PC_LinkSpeed_1000:
276 mii->mii_media_active |= IFM_1000_T;
277 break;
278 default:
279 mii->mii_media_active |= IFM_NONE;
280 return;
281 }
282 if ((stat & PC_PhyDuplexStatus) != 0)
283 mii->mii_media_active |= IFM_FDX;
284 else
285 mii->mii_media_active |= IFM_HDX;
286 }
287
288 if ((mii->mii_media_active & IFM_FDX) != 0)
289 mii->mii_media_active |= mii_phy_flowstatus(sc);
290
291 if ((mii->mii_media_active & IFM_1000_T) != 0) {
292 stat = PHY_READ(sc, IP1000PHY_MII_1000SR);
293 if ((stat & IP1000PHY_1000SR_MASTER) != 0)
294 mii->mii_media_active |= IFM_ETH_MASTER;
295 }
296 }
297
298 static int
ip1000phy_mii_phy_auto(struct mii_softc * sc,int media)299 ip1000phy_mii_phy_auto(struct mii_softc *sc, int media)
300 {
301 uint32_t reg;
302
303 reg = 0;
304 if (sc->mii_mpd_model == MII_MODEL_xxICPLUS_IP1001) {
305 reg = PHY_READ(sc, IP1000PHY_MII_ANAR);
306 reg &= ~(IP1000PHY_ANAR_PAUSE | IP1000PHY_ANAR_APAUSE);
307 reg |= IP1000PHY_ANAR_NP;
308 }
309 reg |= IP1000PHY_ANAR_10T | IP1000PHY_ANAR_10T_FDX |
310 IP1000PHY_ANAR_100TX | IP1000PHY_ANAR_100TX_FDX;
311 if ((media & IFM_FLOW) != 0 || (sc->mii_flags & MIIF_FORCEPAUSE) != 0)
312 reg |= IP1000PHY_ANAR_PAUSE | IP1000PHY_ANAR_APAUSE;
313 PHY_WRITE(sc, IP1000PHY_MII_ANAR, reg | IP1000PHY_ANAR_CSMA);
314
315 reg = IP1000PHY_1000CR_1000T | IP1000PHY_1000CR_1000T_FDX;
316 if (sc->mii_mpd_model != MII_MODEL_xxICPLUS_IP1001)
317 reg |= IP1000PHY_1000CR_MASTER;
318 PHY_WRITE(sc, IP1000PHY_MII_1000CR, reg);
319 PHY_WRITE(sc, IP1000PHY_MII_BMCR, (IP1000PHY_BMCR_FDX |
320 IP1000PHY_BMCR_AUTOEN | IP1000PHY_BMCR_STARTNEG));
321
322 return (EJUSTRETURN);
323 }
324
325 static void
ip1000phy_load_dspcode(struct mii_softc * sc)326 ip1000phy_load_dspcode(struct mii_softc *sc)
327 {
328
329 PHY_WRITE(sc, 31, 0x0001);
330 PHY_WRITE(sc, 27, 0x01e0);
331 PHY_WRITE(sc, 31, 0x0002);
332 PHY_WRITE(sc, 27, 0xeb8e);
333 PHY_WRITE(sc, 31, 0x0000);
334 PHY_WRITE(sc, 30, 0x005e);
335 PHY_WRITE(sc, 9, 0x0700);
336
337 DELAY(50);
338 }
339
340 static void
ip1000phy_reset(struct mii_softc * sc)341 ip1000phy_reset(struct mii_softc *sc)
342 {
343 uint32_t reg;
344
345 mii_phy_reset(sc);
346
347 /* clear autoneg/full-duplex as we don't want it after reset */
348 reg = PHY_READ(sc, IP1000PHY_MII_BMCR);
349 reg &= ~(IP1000PHY_BMCR_AUTOEN | IP1000PHY_BMCR_FDX);
350 PHY_WRITE(sc, MII_BMCR, reg);
351
352 if ((sc->mii_flags & MIIF_PHYPRIV0) != 0)
353 ip1000phy_load_dspcode(sc);
354 }
355