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 * $FreeBSD: src/sys/dev/mii/ip1000phy.c,v 1.1 2006/07/25 00:16:09 yongari Exp $
28 */
29
30 /*
31 * Driver for the IC Plus IP1000A 10/100/1000 PHY.
32 */
33
34 #include <sys/param.h>
35 #include <sys/bus.h>
36 #include <sys/kernel.h>
37 #include <sys/module.h>
38 #include <sys/socket.h>
39 #include <sys/sysctl.h>
40
41 #include <net/if.h>
42 #include <net/if_arp.h>
43 #include <net/if_media.h>
44 #include <net/if_poll.h>
45
46 #include <dev/netif/mii_layer/mii.h>
47 #include <dev/netif/mii_layer/miivar.h>
48 #include "miidevs.h"
49
50 #include <dev/netif/mii_layer/ip1000phyreg.h>
51
52 #include "miibus_if.h"
53
54 #include <dev/netif/stge/if_stgereg.h>
55 #include <dev/netif/stge/if_stgevar.h>
56
57 static int ip1000phy_probe(device_t);
58 static int ip1000phy_attach(device_t);
59 static int ip1000phy_service(struct mii_softc *, struct mii_data *, int);
60 static void ip1000phy_status(struct mii_softc *);
61 static void ip1000phy_reset(struct mii_softc *);
62 static int ip1000phy_mii_phy_auto(struct mii_softc *);
63
64 static device_method_t ip1000phy_methods[] = {
65 /* device interface */
66 DEVMETHOD(device_probe, ip1000phy_probe),
67 DEVMETHOD(device_attach, ip1000phy_attach),
68 DEVMETHOD(device_detach, ukphy_detach),
69 DEVMETHOD(device_shutdown, bus_generic_shutdown),
70 DEVMETHOD_END
71 };
72
73 static devclass_t ip1000phy_devclass;
74 static driver_t ip1000phy_driver = {
75 "ip1000phy",
76 ip1000phy_methods,
77 sizeof (struct mii_softc)
78 };
79
80 DRIVER_MODULE(ip1000phy, miibus, ip1000phy_driver, ip1000phy_devclass, NULL, NULL);
81
82 static const struct mii_phydesc ip1000phys[] = {
83 MII_PHYDESC(ICPLUS, IP1000A),
84 MII_PHYDESC_NULL
85 };
86
87 static int
ip1000phy_probe(device_t dev)88 ip1000phy_probe(device_t dev)
89 {
90 struct mii_attach_args *ma;
91 const struct mii_phydesc *mpd;
92
93 ma = device_get_ivars(dev);
94 mpd = mii_phy_match(ma, ip1000phys);
95 if (mpd != NULL) {
96 device_set_desc(dev, mpd->mpd_name);
97 return (0);
98 }
99
100 return (ENXIO);
101 }
102
103 static int
ip1000phy_attach(device_t dev)104 ip1000phy_attach(device_t dev)
105 {
106 struct mii_softc *sc;
107 struct mii_attach_args *ma;
108 struct mii_data *mii;
109
110 sc = device_get_softc(dev);
111 ma = device_get_ivars(dev);
112 mii_softc_init(sc, ma);
113 sc->mii_dev = device_get_parent(dev);
114 mii = device_get_softc(sc->mii_dev);
115 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
116
117 sc->mii_inst = mii->mii_instance;
118 sc->mii_service = ip1000phy_service;
119 sc->mii_pdata = mii;
120
121 sc->mii_anegticks = MII_ANEGTICKS_GIGE;
122 sc->mii_flags |= MIIF_NOISOLATE;
123
124 mii->mii_instance++;
125
126 device_printf(dev, " ");
127
128 #define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
129
130 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
131 BMCR_ISO);
132
133 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, 0, sc->mii_inst),
134 IP1000PHY_BMCR_10);
135 kprintf("10baseT, ");
136 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, IFM_FDX, sc->mii_inst),
137 IP1000PHY_BMCR_10 | IP1000PHY_BMCR_FDX);
138 kprintf("10baseT-FDX, ");
139 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, 0, sc->mii_inst),
140 IP1000PHY_BMCR_100);
141 kprintf("100baseTX, ");
142 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_FDX, sc->mii_inst),
143 IP1000PHY_BMCR_100 | IP1000PHY_BMCR_FDX);
144 kprintf("100baseTX-FDX, ");
145 /* 1000baseT half-duplex, really supported? */
146 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, 0, sc->mii_inst),
147 IP1000PHY_BMCR_1000);
148 kprintf("1000baseT, ");
149 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, IFM_FDX, sc->mii_inst),
150 IP1000PHY_BMCR_1000 | IP1000PHY_BMCR_FDX);
151 kprintf("1000baseT-FDX, ");
152 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 0);
153 kprintf("auto\n");
154 #undef ADD
155
156 ip1000phy_reset(sc);
157
158 MIIBUS_MEDIAINIT(sc->mii_dev);
159 return(0);
160 }
161
162 static int
ip1000phy_service(struct mii_softc * sc,struct mii_data * mii,int cmd)163 ip1000phy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
164 {
165 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
166 uint32_t gig, reg, speed;
167
168 switch (cmd) {
169 case MII_POLLSTAT:
170 /*
171 * If we're not polling our PHY instance, just return.
172 */
173 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
174 return (0);
175 break;
176
177 case MII_MEDIACHG:
178 /*
179 * If the media indicates a different PHY instance,
180 * isolate ourselves.
181 */
182 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
183 reg = PHY_READ(sc, IP1000PHY_MII_BMCR);
184 PHY_WRITE(sc, IP1000PHY_MII_BMCR,
185 reg | IP1000PHY_BMCR_ISO);
186 return (0);
187 }
188
189 /*
190 * If the interface is not up, don't do anything.
191 */
192 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
193 break;
194
195 ip1000phy_reset(sc);
196 switch (IFM_SUBTYPE(ife->ifm_media)) {
197 case IFM_AUTO:
198 ip1000phy_mii_phy_auto(sc);
199 goto done;
200
201 case IFM_1000_T:
202 /*
203 * XXX
204 * Manual 1000baseT setting doesn't seem to work.
205 */
206 speed = IP1000PHY_BMCR_1000;
207 break;
208
209 case IFM_100_TX:
210 speed = IP1000PHY_BMCR_100;
211 break;
212
213 case IFM_10_T:
214 speed = IP1000PHY_BMCR_10;
215 break;
216
217 default:
218 return (EINVAL);
219 }
220
221 if (((ife->ifm_media & IFM_GMASK) & IFM_FDX) != 0) {
222 speed |= IP1000PHY_BMCR_FDX;
223 gig = IP1000PHY_1000CR_1000T_FDX;
224 } else {
225 gig = IP1000PHY_1000CR_1000T;
226 }
227
228 PHY_WRITE(sc, IP1000PHY_MII_1000CR, 0);
229 PHY_WRITE(sc, IP1000PHY_MII_BMCR, speed);
230
231 if (IFM_SUBTYPE(ife->ifm_media) != IFM_1000_T)
232 break;
233
234 PHY_WRITE(sc, IP1000PHY_MII_1000CR, gig);
235 PHY_WRITE(sc, IP1000PHY_MII_BMCR, speed);
236
237 /*
238 * When settning the link manually, one side must
239 * be the master and the other the slave. However
240 * ifmedia doesn't give us a good way to specify
241 * this, so we fake it by using one of the LINK
242 * flags. If LINK0 is set, we program the PHY to
243 * be a master, otherwise it's a slave.
244 */
245 if ((mii->mii_ifp->if_flags & IFF_LINK0)) {
246 PHY_WRITE(sc, IP1000PHY_MII_1000CR, gig |
247 IP1000PHY_1000CR_MASTER |
248 IP1000PHY_1000CR_MMASTER |
249 IP1000PHY_1000CR_MANUAL);
250 } else {
251 PHY_WRITE(sc, IP1000PHY_MII_1000CR, gig |
252 IP1000PHY_1000CR_MASTER |
253 IP1000PHY_1000CR_MANUAL);
254 }
255
256 done:
257 break;
258
259 case MII_TICK:
260 /*
261 * If we're not currently selected, just return.
262 */
263 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
264 return (0);
265 /*
266 * Is the interface even up?
267 */
268 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
269 return (0);
270
271 /*
272 * Only used for autonegotiation.
273 */
274 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
275 break;
276
277 /*
278 * check for link.
279 */
280 reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
281 if (reg & BMSR_LINK) {
282 sc->mii_ticks = 0;
283 break;
284 }
285
286 /* Announce link loss right after it happens */
287 if (sc->mii_ticks++ == 0)
288 break;
289
290 /*
291 * Only retry autonegotiation every mii_anegticks seconds.
292 */
293 if (sc->mii_ticks <= sc->mii_anegticks)
294 return (0);
295
296 sc->mii_ticks = 0;
297 ip1000phy_mii_phy_auto(sc);
298 break;
299 }
300
301 /* Update the media status. */
302 ip1000phy_status(sc);
303
304 /* Callback if something changed. */
305 mii_phy_update(sc, cmd);
306 return (0);
307 }
308
309 static void
ip1000phy_status(struct mii_softc * sc)310 ip1000phy_status(struct mii_softc *sc)
311 {
312 struct mii_data *mii = sc->mii_pdata;
313 uint32_t bmsr, bmcr, stat;
314 uint32_t ar, lpar;
315
316 mii->mii_media_status = IFM_AVALID;
317 mii->mii_media_active = IFM_ETHER;
318
319 bmsr = PHY_READ(sc, IP1000PHY_MII_BMSR) |
320 PHY_READ(sc, IP1000PHY_MII_BMSR);
321 if ((bmsr & IP1000PHY_BMSR_LINK) != 0)
322 mii->mii_media_status |= IFM_ACTIVE;
323
324 bmcr = PHY_READ(sc, IP1000PHY_MII_BMCR);
325 if ((bmcr & IP1000PHY_BMCR_LOOP) != 0)
326 mii->mii_media_active |= IFM_LOOP;
327
328 if ((bmcr & IP1000PHY_BMCR_AUTOEN) != 0) {
329 if ((bmsr & IP1000PHY_BMSR_ANEGCOMP) == 0) {
330 /* Erg, still trying, I guess... */
331 mii->mii_media_active |= IFM_NONE;
332 return;
333 }
334 }
335
336 stat = PHY_READ(sc, STGE_PhyCtrl);
337 switch (PC_LinkSpeed(stat)) {
338 case PC_LinkSpeed_Down:
339 mii->mii_media_active |= IFM_NONE;
340 return;
341 case PC_LinkSpeed_10:
342 mii->mii_media_active |= IFM_10_T;
343 break;
344 case PC_LinkSpeed_100:
345 mii->mii_media_active |= IFM_100_TX;
346 break;
347 case PC_LinkSpeed_1000:
348 mii->mii_media_active |= IFM_1000_T;
349 break;
350 }
351 if ((stat & PC_PhyDuplexStatus) != 0)
352 mii->mii_media_active |= IFM_FDX;
353 else
354 mii->mii_media_active |= IFM_HDX;
355
356 ar = PHY_READ(sc, IP1000PHY_MII_ANAR);
357 lpar = PHY_READ(sc, IP1000PHY_MII_ANLPAR);
358
359 /*
360 * FLAG0 : Rx flow-control
361 * FLAG1 : Tx flow-control
362 */
363 if ((ar & IP1000PHY_ANAR_PAUSE) && (lpar & IP1000PHY_ANLPAR_PAUSE))
364 mii->mii_media_active |= IFM_FLAG0 | IFM_FLAG1;
365 else if (!(ar & IP1000PHY_ANAR_PAUSE) && (ar & IP1000PHY_ANAR_APAUSE) &&
366 (lpar & IP1000PHY_ANLPAR_PAUSE) && (lpar & IP1000PHY_ANLPAR_APAUSE))
367 mii->mii_media_active |= IFM_FLAG1;
368 else if ((ar & IP1000PHY_ANAR_PAUSE) && (ar & IP1000PHY_ANAR_APAUSE) &&
369 !(lpar & IP1000PHY_ANLPAR_PAUSE) &&
370 (lpar & IP1000PHY_ANLPAR_APAUSE)) {
371 mii->mii_media_active |= IFM_FLAG0;
372 }
373
374 /*
375 * FLAG2 : local PHY resolved to MASTER
376 */
377 if ((mii->mii_media_active & IFM_1000_T) != 0) {
378 stat = PHY_READ(sc, IP1000PHY_MII_1000SR);
379 if ((stat & IP1000PHY_1000SR_MASTER) != 0)
380 mii->mii_media_active |= IFM_FLAG2;
381 }
382 }
383
384 static int
ip1000phy_mii_phy_auto(struct mii_softc * mii)385 ip1000phy_mii_phy_auto(struct mii_softc *mii)
386 {
387 uint32_t reg;
388
389 PHY_WRITE(mii, IP1000PHY_MII_ANAR,
390 IP1000PHY_ANAR_10T | IP1000PHY_ANAR_10T_FDX |
391 IP1000PHY_ANAR_100TX | IP1000PHY_ANAR_100TX_FDX |
392 IP1000PHY_ANAR_PAUSE | IP1000PHY_ANAR_APAUSE);
393 reg = IP1000PHY_1000CR_1000T | IP1000PHY_1000CR_1000T_FDX;
394 reg |= IP1000PHY_1000CR_MASTER;
395 PHY_WRITE(mii, IP1000PHY_MII_1000CR, reg);
396 PHY_WRITE(mii, IP1000PHY_MII_BMCR, (IP1000PHY_BMCR_FDX |
397 IP1000PHY_BMCR_AUTOEN | IP1000PHY_BMCR_STARTNEG));
398
399 return (EJUSTRETURN);
400 }
401
402 static void
ip1000phy_load_dspcode(struct mii_softc * sc)403 ip1000phy_load_dspcode(struct mii_softc *sc)
404 {
405
406 PHY_WRITE(sc, 31, 0x0001);
407 PHY_WRITE(sc, 27, 0x01e0);
408 PHY_WRITE(sc, 31, 0x0002);
409 PHY_WRITE(sc, 27, 0xeb8e);
410 PHY_WRITE(sc, 31, 0x0000);
411 PHY_WRITE(sc, 30, 0x005e);
412 PHY_WRITE(sc, 9, 0x0700);
413
414 DELAY(50);
415 }
416
417 static void
ip1000phy_reset(struct mii_softc * sc)418 ip1000phy_reset(struct mii_softc *sc)
419 {
420 struct stge_softc *stge_sc;
421 device_t parent;
422 uint32_t reg;
423
424 mii_phy_reset(sc);
425
426 /* clear autoneg/full-duplex as we don't want it after reset */
427 reg = PHY_READ(sc, IP1000PHY_MII_BMCR);
428 reg &= ~(IP1000PHY_BMCR_AUTOEN | IP1000PHY_BMCR_FDX);
429 PHY_WRITE(sc, MII_BMCR, reg);
430
431 /*
432 * XXX There should be more general way to pass PHY specific
433 * data via mii interface.
434 */
435 parent = device_get_parent(sc->mii_dev);
436 if (strncmp(device_get_name(parent), "stge", 4) == 0) {
437 stge_sc = device_get_softc(parent);
438 if (stge_sc->sc_rev >= 0x40 && stge_sc->sc_rev <= 0x4e)
439 ip1000phy_load_dspcode(sc);
440 }
441 }
442