1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2006, Pyun YongHyeon <yongari@FreeBSD.org>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice unmodified, this list of conditions, and the following
12 * 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 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 */
30
31 #include <sys/cdefs.h>
32 __FBSDID("$FreeBSD$");
33
34 /*
35 * Driver for the IC Plus IP1000A/IP1001 10/100/1000 PHY.
36 */
37
38 #include <sys/param.h>
39 #include <sys/systm.h>
40 #include <sys/kernel.h>
41 #include <sys/module.h>
42 #include <sys/socket.h>
43 #include <sys/taskqueue.h>
44 #include <sys/bus.h>
45
46 #include <net/if.h>
47 #include <net/if_var.h>
48 #include <net/if_media.h>
49
50 #include <dev/mii/mii.h>
51 #include <dev/mii/miivar.h>
52 #include "miidevs.h"
53
54 #include <dev/mii/ip1000phyreg.h>
55
56 #include "miibus_if.h"
57
58 #include <machine/bus.h>
59 #include <dev/stge/if_stgereg.h>
60
61 static int ip1000phy_probe(device_t);
62 static int ip1000phy_attach(device_t);
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, mii_phy_detach),
69 DEVMETHOD(device_shutdown, bus_generic_shutdown),
70 DEVMETHOD_END
71 };
72
73 static driver_t ip1000phy_driver = {
74 "ip1000phy",
75 ip1000phy_methods,
76 sizeof(struct mii_softc)
77 };
78
79 DRIVER_MODULE(ip1000phy, miibus, ip1000phy_driver, 0, 0);
80
81 static int ip1000phy_service(struct mii_softc *, struct mii_data *, int);
82 static void ip1000phy_status(struct mii_softc *);
83 static void ip1000phy_reset(struct mii_softc *);
84 static int ip1000phy_mii_phy_auto(struct mii_softc *, int);
85
86 static const struct mii_phydesc ip1000phys[] = {
87 MII_PHY_DESC(xxICPLUS, IP1000A),
88 MII_PHY_DESC(xxICPLUS, IP1001),
89 MII_PHY_END
90 };
91
92 static const struct mii_phy_funcs ip1000phy_funcs = {
93 ip1000phy_service,
94 ip1000phy_status,
95 ip1000phy_reset
96 };
97
98 static int
99 ip1000phy_probe(device_t dev)
100 {
101
102 return (mii_phy_dev_probe(dev, ip1000phys, BUS_PROBE_DEFAULT));
103 }
104
105 static int
106 ip1000phy_attach(device_t dev)
107 {
108 struct mii_attach_args *ma;
109 u_int flags;
110
111 ma = device_get_ivars(dev);
112 flags = MIIF_NOISOLATE | MIIF_NOMANPAUSE;
113 if (MII_MODEL(ma->mii_id2) == MII_MODEL_xxICPLUS_IP1000A &&
114 mii_dev_mac_match(dev, "stge") &&
115 (miibus_get_flags(dev) & MIIF_MACPRIV0) != 0)
116 flags |= MIIF_PHYPRIV0;
117 mii_phy_dev_attach(dev, flags, &ip1000phy_funcs, 1);
118 return (0);
119 }
120
121 static int
122 ip1000phy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
123 {
124 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
125 uint32_t gig, reg, speed;
126
127 switch (cmd) {
128 case MII_POLLSTAT:
129 break;
130
131 case MII_MEDIACHG:
132 PHY_RESET(sc);
133 switch (IFM_SUBTYPE(ife->ifm_media)) {
134 case IFM_AUTO:
135 (void)ip1000phy_mii_phy_auto(sc, ife->ifm_media);
136 goto done;
137
138 case IFM_1000_T:
139 /*
140 * XXX
141 * Manual 1000baseT setting doesn't seem to work.
142 */
143 speed = IP1000PHY_BMCR_1000;
144 break;
145
146 case IFM_100_TX:
147 speed = IP1000PHY_BMCR_100;
148 break;
149
150 case IFM_10_T:
151 speed = IP1000PHY_BMCR_10;
152 break;
153
154 default:
155 return (EINVAL);
156 }
157
158 if ((ife->ifm_media & IFM_FDX) != 0) {
159 speed |= IP1000PHY_BMCR_FDX;
160 gig = IP1000PHY_1000CR_1000T_FDX;
161 } else
162 gig = IP1000PHY_1000CR_1000T;
163
164 if (IFM_SUBTYPE(ife->ifm_media) == IFM_1000_T) {
165 gig |=
166 IP1000PHY_1000CR_MASTER | IP1000PHY_1000CR_MANUAL;
167 if ((ife->ifm_media & IFM_ETH_MASTER) != 0)
168 gig |= IP1000PHY_1000CR_MMASTER;
169 } else
170 gig = 0;
171 PHY_WRITE(sc, IP1000PHY_MII_1000CR, gig);
172 PHY_WRITE(sc, IP1000PHY_MII_BMCR, speed);
173
174 done:
175 break;
176
177 case MII_TICK:
178 /*
179 * Only used for autonegotiation.
180 */
181 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) {
182 sc->mii_ticks = 0;
183 break;
184 }
185
186 /*
187 * check for link.
188 */
189 reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
190 if (reg & BMSR_LINK) {
191 sc->mii_ticks = 0;
192 break;
193 }
194
195 /* Announce link loss right after it happens */
196 if (sc->mii_ticks++ == 0)
197 break;
198
199 /*
200 * Only retry autonegotiation every mii_anegticks seconds.
201 */
202 if (sc->mii_ticks <= sc->mii_anegticks)
203 break;
204
205 sc->mii_ticks = 0;
206 ip1000phy_mii_phy_auto(sc, ife->ifm_media);
207 break;
208 }
209
210 /* Update the media status. */
211 PHY_STATUS(sc);
212
213 /* Callback if something changed. */
214 mii_phy_update(sc, cmd);
215 return (0);
216 }
217
218 static void
219 ip1000phy_status(struct mii_softc *sc)
220 {
221 struct mii_data *mii = sc->mii_pdata;
222 uint32_t bmsr, bmcr, stat;
223
224 mii->mii_media_status = IFM_AVALID;
225 mii->mii_media_active = IFM_ETHER;
226
227 bmsr = PHY_READ(sc, IP1000PHY_MII_BMSR) |
228 PHY_READ(sc, IP1000PHY_MII_BMSR);
229 if ((bmsr & IP1000PHY_BMSR_LINK) != 0)
230 mii->mii_media_status |= IFM_ACTIVE;
231
232 bmcr = PHY_READ(sc, IP1000PHY_MII_BMCR);
233 if ((bmcr & IP1000PHY_BMCR_LOOP) != 0)
234 mii->mii_media_active |= IFM_LOOP;
235
236 if ((bmcr & IP1000PHY_BMCR_AUTOEN) != 0) {
237 if ((bmsr & IP1000PHY_BMSR_ANEGCOMP) == 0) {
238 /* Erg, still trying, I guess... */
239 mii->mii_media_active |= IFM_NONE;
240 return;
241 }
242 }
243
244 if (sc->mii_mpd_model == MII_MODEL_xxICPLUS_IP1001) {
245 stat = PHY_READ(sc, IP1000PHY_LSR);
246 switch (stat & IP1000PHY_LSR_SPEED_MASK) {
247 case IP1000PHY_LSR_SPEED_10:
248 mii->mii_media_active |= IFM_10_T;
249 break;
250 case IP1000PHY_LSR_SPEED_100:
251 mii->mii_media_active |= IFM_100_TX;
252 break;
253 case IP1000PHY_LSR_SPEED_1000:
254 mii->mii_media_active |= IFM_1000_T;
255 break;
256 default:
257 mii->mii_media_active |= IFM_NONE;
258 return;
259 }
260 if ((stat & IP1000PHY_LSR_FULL_DUPLEX) != 0)
261 mii->mii_media_active |= IFM_FDX;
262 else
263 mii->mii_media_active |= IFM_HDX;
264 } else {
265 stat = PHY_READ(sc, STGE_PhyCtrl);
266 switch (PC_LinkSpeed(stat)) {
267 case PC_LinkSpeed_Down:
268 mii->mii_media_active |= IFM_NONE;
269 return;
270 case PC_LinkSpeed_10:
271 mii->mii_media_active |= IFM_10_T;
272 break;
273 case PC_LinkSpeed_100:
274 mii->mii_media_active |= IFM_100_TX;
275 break;
276 case PC_LinkSpeed_1000:
277 mii->mii_media_active |= IFM_1000_T;
278 break;
279 default:
280 mii->mii_media_active |= IFM_NONE;
281 return;
282 }
283 if ((stat & PC_PhyDuplexStatus) != 0)
284 mii->mii_media_active |= IFM_FDX;
285 else
286 mii->mii_media_active |= IFM_HDX;
287 }
288
289 if ((mii->mii_media_active & IFM_FDX) != 0)
290 mii->mii_media_active |= mii_phy_flowstatus(sc);
291
292 if ((mii->mii_media_active & IFM_1000_T) != 0) {
293 stat = PHY_READ(sc, IP1000PHY_MII_1000SR);
294 if ((stat & IP1000PHY_1000SR_MASTER) != 0)
295 mii->mii_media_active |= IFM_ETH_MASTER;
296 }
297 }
298
299 static int
300 ip1000phy_mii_phy_auto(struct mii_softc *sc, int media)
301 {
302 uint32_t reg;
303
304 reg = 0;
305 if (sc->mii_mpd_model == MII_MODEL_xxICPLUS_IP1001) {
306 reg = PHY_READ(sc, IP1000PHY_MII_ANAR);
307 reg &= ~(IP1000PHY_ANAR_PAUSE | IP1000PHY_ANAR_APAUSE);
308 reg |= IP1000PHY_ANAR_NP;
309 }
310 reg |= IP1000PHY_ANAR_10T | IP1000PHY_ANAR_10T_FDX |
311 IP1000PHY_ANAR_100TX | IP1000PHY_ANAR_100TX_FDX;
312 if ((media & IFM_FLOW) != 0 || (sc->mii_flags & MIIF_FORCEPAUSE) != 0)
313 reg |= IP1000PHY_ANAR_PAUSE | IP1000PHY_ANAR_APAUSE;
314 PHY_WRITE(sc, IP1000PHY_MII_ANAR, reg | IP1000PHY_ANAR_CSMA);
315
316 reg = IP1000PHY_1000CR_1000T | IP1000PHY_1000CR_1000T_FDX;
317 if (sc->mii_mpd_model != MII_MODEL_xxICPLUS_IP1001)
318 reg |= IP1000PHY_1000CR_MASTER;
319 PHY_WRITE(sc, IP1000PHY_MII_1000CR, reg);
320 PHY_WRITE(sc, IP1000PHY_MII_BMCR, (IP1000PHY_BMCR_FDX |
321 IP1000PHY_BMCR_AUTOEN | IP1000PHY_BMCR_STARTNEG));
322
323 return (EJUSTRETURN);
324 }
325
326 static void
327 ip1000phy_load_dspcode(struct mii_softc *sc)
328 {
329
330 PHY_WRITE(sc, 31, 0x0001);
331 PHY_WRITE(sc, 27, 0x01e0);
332 PHY_WRITE(sc, 31, 0x0002);
333 PHY_WRITE(sc, 27, 0xeb8e);
334 PHY_WRITE(sc, 31, 0x0000);
335 PHY_WRITE(sc, 30, 0x005e);
336 PHY_WRITE(sc, 9, 0x0700);
337
338 DELAY(50);
339 }
340
341 static void
342 ip1000phy_reset(struct mii_softc *sc)
343 {
344 uint32_t reg;
345
346 mii_phy_reset(sc);
347
348 /* clear autoneg/full-duplex as we don't want it after reset */
349 reg = PHY_READ(sc, IP1000PHY_MII_BMCR);
350 reg &= ~(IP1000PHY_BMCR_AUTOEN | IP1000PHY_BMCR_FDX);
351 PHY_WRITE(sc, MII_BMCR, reg);
352
353 if ((sc->mii_flags & MIIF_PHYPRIV0) != 0)
354 ip1000phy_load_dspcode(sc);
355 }
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