Linux-libre 5.4.48-gnu
[librecmc/linux-libre.git] / drivers / net / sungem_phy.c
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * PHY drivers for the sungem ethernet driver.
4  *
5  * This file could be shared with other drivers.
6  *
7  * (c) 2002-2007, Benjamin Herrenscmidt (benh@kernel.crashing.org)
8  *
9  * TODO:
10  *  - Add support for PHYs that provide an IRQ line
11  *  - Eventually moved the entire polling state machine in
12  *    there (out of the eth driver), so that it can easily be
13  *    skipped on PHYs that implement it in hardware.
14  *  - On LXT971 & BCM5201, Apple uses some chip specific regs
15  *    to read the link status. Figure out why and if it makes
16  *    sense to do the same (magic aneg ?)
17  *  - Apple has some additional power management code for some
18  *    Broadcom PHYs that they "hide" from the OpenSource version
19  *    of darwin, still need to reverse engineer that
20  */
21
22
23 #include <linux/module.h>
24
25 #include <linux/kernel.h>
26 #include <linux/types.h>
27 #include <linux/netdevice.h>
28 #include <linux/etherdevice.h>
29 #include <linux/mii.h>
30 #include <linux/ethtool.h>
31 #include <linux/delay.h>
32
33 #ifdef CONFIG_PPC_PMAC
34 #include <asm/prom.h>
35 #endif
36
37 #include <linux/sungem_phy.h>
38
39 /* Link modes of the BCM5400 PHY */
40 static const int phy_BCM5400_link_table[8][3] = {
41         { 0, 0, 0 },    /* No link */
42         { 0, 0, 0 },    /* 10BT Half Duplex */
43         { 1, 0, 0 },    /* 10BT Full Duplex */
44         { 0, 1, 0 },    /* 100BT Half Duplex */
45         { 0, 1, 0 },    /* 100BT Half Duplex */
46         { 1, 1, 0 },    /* 100BT Full Duplex*/
47         { 1, 0, 1 },    /* 1000BT */
48         { 1, 0, 1 },    /* 1000BT */
49 };
50
51 static inline int __sungem_phy_read(struct mii_phy* phy, int id, int reg)
52 {
53         return phy->mdio_read(phy->dev, id, reg);
54 }
55
56 static inline void __sungem_phy_write(struct mii_phy* phy, int id, int reg, int val)
57 {
58         phy->mdio_write(phy->dev, id, reg, val);
59 }
60
61 static inline int sungem_phy_read(struct mii_phy* phy, int reg)
62 {
63         return phy->mdio_read(phy->dev, phy->mii_id, reg);
64 }
65
66 static inline void sungem_phy_write(struct mii_phy* phy, int reg, int val)
67 {
68         phy->mdio_write(phy->dev, phy->mii_id, reg, val);
69 }
70
71 static int reset_one_mii_phy(struct mii_phy* phy, int phy_id)
72 {
73         u16 val;
74         int limit = 10000;
75
76         val = __sungem_phy_read(phy, phy_id, MII_BMCR);
77         val &= ~(BMCR_ISOLATE | BMCR_PDOWN);
78         val |= BMCR_RESET;
79         __sungem_phy_write(phy, phy_id, MII_BMCR, val);
80
81         udelay(100);
82
83         while (--limit) {
84                 val = __sungem_phy_read(phy, phy_id, MII_BMCR);
85                 if ((val & BMCR_RESET) == 0)
86                         break;
87                 udelay(10);
88         }
89         if ((val & BMCR_ISOLATE) && limit > 0)
90                 __sungem_phy_write(phy, phy_id, MII_BMCR, val & ~BMCR_ISOLATE);
91
92         return limit <= 0;
93 }
94
95 static int bcm5201_init(struct mii_phy* phy)
96 {
97         u16 data;
98
99         data = sungem_phy_read(phy, MII_BCM5201_MULTIPHY);
100         data &= ~MII_BCM5201_MULTIPHY_SUPERISOLATE;
101         sungem_phy_write(phy, MII_BCM5201_MULTIPHY, data);
102
103         sungem_phy_write(phy, MII_BCM5201_INTERRUPT, 0);
104
105         return 0;
106 }
107
108 static int bcm5201_suspend(struct mii_phy* phy)
109 {
110         sungem_phy_write(phy, MII_BCM5201_INTERRUPT, 0);
111         sungem_phy_write(phy, MII_BCM5201_MULTIPHY, MII_BCM5201_MULTIPHY_SUPERISOLATE);
112
113         return 0;
114 }
115
116 static int bcm5221_init(struct mii_phy* phy)
117 {
118         u16 data;
119
120         data = sungem_phy_read(phy, MII_BCM5221_TEST);
121         sungem_phy_write(phy, MII_BCM5221_TEST,
122                 data | MII_BCM5221_TEST_ENABLE_SHADOWS);
123
124         data = sungem_phy_read(phy, MII_BCM5221_SHDOW_AUX_STAT2);
125         sungem_phy_write(phy, MII_BCM5221_SHDOW_AUX_STAT2,
126                 data | MII_BCM5221_SHDOW_AUX_STAT2_APD);
127
128         data = sungem_phy_read(phy, MII_BCM5221_SHDOW_AUX_MODE4);
129         sungem_phy_write(phy, MII_BCM5221_SHDOW_AUX_MODE4,
130                 data | MII_BCM5221_SHDOW_AUX_MODE4_CLKLOPWR);
131
132         data = sungem_phy_read(phy, MII_BCM5221_TEST);
133         sungem_phy_write(phy, MII_BCM5221_TEST,
134                 data & ~MII_BCM5221_TEST_ENABLE_SHADOWS);
135
136         return 0;
137 }
138
139 static int bcm5221_suspend(struct mii_phy* phy)
140 {
141         u16 data;
142
143         data = sungem_phy_read(phy, MII_BCM5221_TEST);
144         sungem_phy_write(phy, MII_BCM5221_TEST,
145                 data | MII_BCM5221_TEST_ENABLE_SHADOWS);
146
147         data = sungem_phy_read(phy, MII_BCM5221_SHDOW_AUX_MODE4);
148         sungem_phy_write(phy, MII_BCM5221_SHDOW_AUX_MODE4,
149                   data | MII_BCM5221_SHDOW_AUX_MODE4_IDDQMODE);
150
151         return 0;
152 }
153
154 static int bcm5241_init(struct mii_phy* phy)
155 {
156         u16 data;
157
158         data = sungem_phy_read(phy, MII_BCM5221_TEST);
159         sungem_phy_write(phy, MII_BCM5221_TEST,
160                 data | MII_BCM5221_TEST_ENABLE_SHADOWS);
161
162         data = sungem_phy_read(phy, MII_BCM5221_SHDOW_AUX_STAT2);
163         sungem_phy_write(phy, MII_BCM5221_SHDOW_AUX_STAT2,
164                 data | MII_BCM5221_SHDOW_AUX_STAT2_APD);
165
166         data = sungem_phy_read(phy, MII_BCM5221_SHDOW_AUX_MODE4);
167         sungem_phy_write(phy, MII_BCM5221_SHDOW_AUX_MODE4,
168                 data & ~MII_BCM5241_SHDOW_AUX_MODE4_STANDBYPWR);
169
170         data = sungem_phy_read(phy, MII_BCM5221_TEST);
171         sungem_phy_write(phy, MII_BCM5221_TEST,
172                 data & ~MII_BCM5221_TEST_ENABLE_SHADOWS);
173
174         return 0;
175 }
176
177 static int bcm5241_suspend(struct mii_phy* phy)
178 {
179         u16 data;
180
181         data = sungem_phy_read(phy, MII_BCM5221_TEST);
182         sungem_phy_write(phy, MII_BCM5221_TEST,
183                 data | MII_BCM5221_TEST_ENABLE_SHADOWS);
184
185         data = sungem_phy_read(phy, MII_BCM5221_SHDOW_AUX_MODE4);
186         sungem_phy_write(phy, MII_BCM5221_SHDOW_AUX_MODE4,
187                   data | MII_BCM5241_SHDOW_AUX_MODE4_STANDBYPWR);
188
189         return 0;
190 }
191
192 static int bcm5400_init(struct mii_phy* phy)
193 {
194         u16 data;
195
196         /* Configure for gigabit full duplex */
197         data = sungem_phy_read(phy, MII_BCM5400_AUXCONTROL);
198         data |= MII_BCM5400_AUXCONTROL_PWR10BASET;
199         sungem_phy_write(phy, MII_BCM5400_AUXCONTROL, data);
200
201         data = sungem_phy_read(phy, MII_BCM5400_GB_CONTROL);
202         data |= MII_BCM5400_GB_CONTROL_FULLDUPLEXCAP;
203         sungem_phy_write(phy, MII_BCM5400_GB_CONTROL, data);
204
205         udelay(100);
206
207         /* Reset and configure cascaded 10/100 PHY */
208         (void)reset_one_mii_phy(phy, 0x1f);
209
210         data = __sungem_phy_read(phy, 0x1f, MII_BCM5201_MULTIPHY);
211         data |= MII_BCM5201_MULTIPHY_SERIALMODE;
212         __sungem_phy_write(phy, 0x1f, MII_BCM5201_MULTIPHY, data);
213
214         data = sungem_phy_read(phy, MII_BCM5400_AUXCONTROL);
215         data &= ~MII_BCM5400_AUXCONTROL_PWR10BASET;
216         sungem_phy_write(phy, MII_BCM5400_AUXCONTROL, data);
217
218         return 0;
219 }
220
221 static int bcm5400_suspend(struct mii_phy* phy)
222 {
223 #if 0 /* Commented out in Darwin... someone has those dawn docs ? */
224         sungem_phy_write(phy, MII_BMCR, BMCR_PDOWN);
225 #endif
226         return 0;
227 }
228
229 static int bcm5401_init(struct mii_phy* phy)
230 {
231         u16 data;
232         int rev;
233
234         rev = sungem_phy_read(phy, MII_PHYSID2) & 0x000f;
235         if (rev == 0 || rev == 3) {
236                 /* Some revisions of 5401 appear to need this
237                  * initialisation sequence to disable, according
238                  * to OF, "tap power management"
239                  *
240                  * WARNING ! OF and Darwin don't agree on the
241                  * register addresses. OF seem to interpret the
242                  * register numbers below as decimal
243                  *
244                  * Note: This should (and does) match tg3_init_5401phy_dsp
245                  *       in the tg3.c driver. -DaveM
246                  */
247                 sungem_phy_write(phy, 0x18, 0x0c20);
248                 sungem_phy_write(phy, 0x17, 0x0012);
249                 sungem_phy_write(phy, 0x15, 0x1804);
250                 sungem_phy_write(phy, 0x17, 0x0013);
251                 sungem_phy_write(phy, 0x15, 0x1204);
252                 sungem_phy_write(phy, 0x17, 0x8006);
253                 sungem_phy_write(phy, 0x15, 0x0132);
254                 sungem_phy_write(phy, 0x17, 0x8006);
255                 sungem_phy_write(phy, 0x15, 0x0232);
256                 sungem_phy_write(phy, 0x17, 0x201f);
257                 sungem_phy_write(phy, 0x15, 0x0a20);
258         }
259
260         /* Configure for gigabit full duplex */
261         data = sungem_phy_read(phy, MII_BCM5400_GB_CONTROL);
262         data |= MII_BCM5400_GB_CONTROL_FULLDUPLEXCAP;
263         sungem_phy_write(phy, MII_BCM5400_GB_CONTROL, data);
264
265         udelay(10);
266
267         /* Reset and configure cascaded 10/100 PHY */
268         (void)reset_one_mii_phy(phy, 0x1f);
269
270         data = __sungem_phy_read(phy, 0x1f, MII_BCM5201_MULTIPHY);
271         data |= MII_BCM5201_MULTIPHY_SERIALMODE;
272         __sungem_phy_write(phy, 0x1f, MII_BCM5201_MULTIPHY, data);
273
274         return 0;
275 }
276
277 static int bcm5401_suspend(struct mii_phy* phy)
278 {
279 #if 0 /* Commented out in Darwin... someone has those dawn docs ? */
280         sungem_phy_write(phy, MII_BMCR, BMCR_PDOWN);
281 #endif
282         return 0;
283 }
284
285 static int bcm5411_init(struct mii_phy* phy)
286 {
287         u16 data;
288
289         /* Here's some more Apple black magic to setup
290          * some voltage stuffs.
291          */
292         sungem_phy_write(phy, 0x1c, 0x8c23);
293         sungem_phy_write(phy, 0x1c, 0x8ca3);
294         sungem_phy_write(phy, 0x1c, 0x8c23);
295
296         /* Here, Apple seems to want to reset it, do
297          * it as well
298          */
299         sungem_phy_write(phy, MII_BMCR, BMCR_RESET);
300         sungem_phy_write(phy, MII_BMCR, 0x1340);
301
302         data = sungem_phy_read(phy, MII_BCM5400_GB_CONTROL);
303         data |= MII_BCM5400_GB_CONTROL_FULLDUPLEXCAP;
304         sungem_phy_write(phy, MII_BCM5400_GB_CONTROL, data);
305
306         udelay(10);
307
308         /* Reset and configure cascaded 10/100 PHY */
309         (void)reset_one_mii_phy(phy, 0x1f);
310
311         return 0;
312 }
313
314 static int genmii_setup_aneg(struct mii_phy *phy, u32 advertise)
315 {
316         u16 ctl, adv;
317
318         phy->autoneg = 1;
319         phy->speed = SPEED_10;
320         phy->duplex = DUPLEX_HALF;
321         phy->pause = 0;
322         phy->advertising = advertise;
323
324         /* Setup standard advertise */
325         adv = sungem_phy_read(phy, MII_ADVERTISE);
326         adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4);
327         if (advertise & ADVERTISED_10baseT_Half)
328                 adv |= ADVERTISE_10HALF;
329         if (advertise & ADVERTISED_10baseT_Full)
330                 adv |= ADVERTISE_10FULL;
331         if (advertise & ADVERTISED_100baseT_Half)
332                 adv |= ADVERTISE_100HALF;
333         if (advertise & ADVERTISED_100baseT_Full)
334                 adv |= ADVERTISE_100FULL;
335         sungem_phy_write(phy, MII_ADVERTISE, adv);
336
337         /* Start/Restart aneg */
338         ctl = sungem_phy_read(phy, MII_BMCR);
339         ctl |= (BMCR_ANENABLE | BMCR_ANRESTART);
340         sungem_phy_write(phy, MII_BMCR, ctl);
341
342         return 0;
343 }
344
345 static int genmii_setup_forced(struct mii_phy *phy, int speed, int fd)
346 {
347         u16 ctl;
348
349         phy->autoneg = 0;
350         phy->speed = speed;
351         phy->duplex = fd;
352         phy->pause = 0;
353
354         ctl = sungem_phy_read(phy, MII_BMCR);
355         ctl &= ~(BMCR_FULLDPLX|BMCR_SPEED100|BMCR_ANENABLE);
356
357         /* First reset the PHY */
358         sungem_phy_write(phy, MII_BMCR, ctl | BMCR_RESET);
359
360         /* Select speed & duplex */
361         switch(speed) {
362         case SPEED_10:
363                 break;
364         case SPEED_100:
365                 ctl |= BMCR_SPEED100;
366                 break;
367         case SPEED_1000:
368         default:
369                 return -EINVAL;
370         }
371         if (fd == DUPLEX_FULL)
372                 ctl |= BMCR_FULLDPLX;
373         sungem_phy_write(phy, MII_BMCR, ctl);
374
375         return 0;
376 }
377
378 static int genmii_poll_link(struct mii_phy *phy)
379 {
380         u16 status;
381
382         (void)sungem_phy_read(phy, MII_BMSR);
383         status = sungem_phy_read(phy, MII_BMSR);
384         if ((status & BMSR_LSTATUS) == 0)
385                 return 0;
386         if (phy->autoneg && !(status & BMSR_ANEGCOMPLETE))
387                 return 0;
388         return 1;
389 }
390
391 static int genmii_read_link(struct mii_phy *phy)
392 {
393         u16 lpa;
394
395         if (phy->autoneg) {
396                 lpa = sungem_phy_read(phy, MII_LPA);
397
398                 if (lpa & (LPA_10FULL | LPA_100FULL))
399                         phy->duplex = DUPLEX_FULL;
400                 else
401                         phy->duplex = DUPLEX_HALF;
402                 if (lpa & (LPA_100FULL | LPA_100HALF))
403                         phy->speed = SPEED_100;
404                 else
405                         phy->speed = SPEED_10;
406                 phy->pause = 0;
407         }
408         /* On non-aneg, we assume what we put in BMCR is the speed,
409          * though magic-aneg shouldn't prevent this case from occurring
410          */
411
412          return 0;
413 }
414
415 static int generic_suspend(struct mii_phy* phy)
416 {
417         sungem_phy_write(phy, MII_BMCR, BMCR_PDOWN);
418
419         return 0;
420 }
421
422 static int bcm5421_init(struct mii_phy* phy)
423 {
424         u16 data;
425         unsigned int id;
426
427         id = (sungem_phy_read(phy, MII_PHYSID1) << 16 | sungem_phy_read(phy, MII_PHYSID2));
428
429         /* Revision 0 of 5421 needs some fixups */
430         if (id == 0x002060e0) {
431                 /* This is borrowed from MacOS
432                  */
433                 sungem_phy_write(phy, 0x18, 0x1007);
434                 data = sungem_phy_read(phy, 0x18);
435                 sungem_phy_write(phy, 0x18, data | 0x0400);
436                 sungem_phy_write(phy, 0x18, 0x0007);
437                 data = sungem_phy_read(phy, 0x18);
438                 sungem_phy_write(phy, 0x18, data | 0x0800);
439                 sungem_phy_write(phy, 0x17, 0x000a);
440                 data = sungem_phy_read(phy, 0x15);
441                 sungem_phy_write(phy, 0x15, data | 0x0200);
442         }
443
444         /* Pick up some init code from OF for K2 version */
445         if ((id & 0xfffffff0) == 0x002062e0) {
446                 sungem_phy_write(phy, 4, 0x01e1);
447                 sungem_phy_write(phy, 9, 0x0300);
448         }
449
450         /* Check if we can enable automatic low power */
451 #ifdef CONFIG_PPC_PMAC
452         if (phy->platform_data) {
453                 struct device_node *np = of_get_parent(phy->platform_data);
454                 int can_low_power = 1;
455                 if (np == NULL || of_get_property(np, "no-autolowpower", NULL))
456                         can_low_power = 0;
457                 if (can_low_power) {
458                         /* Enable automatic low-power */
459                         sungem_phy_write(phy, 0x1c, 0x9002);
460                         sungem_phy_write(phy, 0x1c, 0xa821);
461                         sungem_phy_write(phy, 0x1c, 0x941d);
462                 }
463         }
464 #endif /* CONFIG_PPC_PMAC */
465
466         return 0;
467 }
468
469 static int bcm54xx_setup_aneg(struct mii_phy *phy, u32 advertise)
470 {
471         u16 ctl, adv;
472
473         phy->autoneg = 1;
474         phy->speed = SPEED_10;
475         phy->duplex = DUPLEX_HALF;
476         phy->pause = 0;
477         phy->advertising = advertise;
478
479         /* Setup standard advertise */
480         adv = sungem_phy_read(phy, MII_ADVERTISE);
481         adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4);
482         if (advertise & ADVERTISED_10baseT_Half)
483                 adv |= ADVERTISE_10HALF;
484         if (advertise & ADVERTISED_10baseT_Full)
485                 adv |= ADVERTISE_10FULL;
486         if (advertise & ADVERTISED_100baseT_Half)
487                 adv |= ADVERTISE_100HALF;
488         if (advertise & ADVERTISED_100baseT_Full)
489                 adv |= ADVERTISE_100FULL;
490         if (advertise & ADVERTISED_Pause)
491                 adv |= ADVERTISE_PAUSE_CAP;
492         if (advertise & ADVERTISED_Asym_Pause)
493                 adv |= ADVERTISE_PAUSE_ASYM;
494         sungem_phy_write(phy, MII_ADVERTISE, adv);
495
496         /* Setup 1000BT advertise */
497         adv = sungem_phy_read(phy, MII_1000BASETCONTROL);
498         adv &= ~(MII_1000BASETCONTROL_FULLDUPLEXCAP|MII_1000BASETCONTROL_HALFDUPLEXCAP);
499         if (advertise & SUPPORTED_1000baseT_Half)
500                 adv |= MII_1000BASETCONTROL_HALFDUPLEXCAP;
501         if (advertise & SUPPORTED_1000baseT_Full)
502                 adv |= MII_1000BASETCONTROL_FULLDUPLEXCAP;
503         sungem_phy_write(phy, MII_1000BASETCONTROL, adv);
504
505         /* Start/Restart aneg */
506         ctl = sungem_phy_read(phy, MII_BMCR);
507         ctl |= (BMCR_ANENABLE | BMCR_ANRESTART);
508         sungem_phy_write(phy, MII_BMCR, ctl);
509
510         return 0;
511 }
512
513 static int bcm54xx_setup_forced(struct mii_phy *phy, int speed, int fd)
514 {
515         u16 ctl;
516
517         phy->autoneg = 0;
518         phy->speed = speed;
519         phy->duplex = fd;
520         phy->pause = 0;
521
522         ctl = sungem_phy_read(phy, MII_BMCR);
523         ctl &= ~(BMCR_FULLDPLX|BMCR_SPEED100|BMCR_SPD2|BMCR_ANENABLE);
524
525         /* First reset the PHY */
526         sungem_phy_write(phy, MII_BMCR, ctl | BMCR_RESET);
527
528         /* Select speed & duplex */
529         switch(speed) {
530         case SPEED_10:
531                 break;
532         case SPEED_100:
533                 ctl |= BMCR_SPEED100;
534                 break;
535         case SPEED_1000:
536                 ctl |= BMCR_SPD2;
537         }
538         if (fd == DUPLEX_FULL)
539                 ctl |= BMCR_FULLDPLX;
540
541         // XXX Should we set the sungem to GII now on 1000BT ?
542
543         sungem_phy_write(phy, MII_BMCR, ctl);
544
545         return 0;
546 }
547
548 static int bcm54xx_read_link(struct mii_phy *phy)
549 {
550         int link_mode;
551         u16 val;
552
553         if (phy->autoneg) {
554                 val = sungem_phy_read(phy, MII_BCM5400_AUXSTATUS);
555                 link_mode = ((val & MII_BCM5400_AUXSTATUS_LINKMODE_MASK) >>
556                              MII_BCM5400_AUXSTATUS_LINKMODE_SHIFT);
557                 phy->duplex = phy_BCM5400_link_table[link_mode][0] ?
558                         DUPLEX_FULL : DUPLEX_HALF;
559                 phy->speed = phy_BCM5400_link_table[link_mode][2] ?
560                                 SPEED_1000 :
561                                 (phy_BCM5400_link_table[link_mode][1] ?
562                                  SPEED_100 : SPEED_10);
563                 val = sungem_phy_read(phy, MII_LPA);
564                 phy->pause = (phy->duplex == DUPLEX_FULL) &&
565                         ((val & LPA_PAUSE) != 0);
566         }
567         /* On non-aneg, we assume what we put in BMCR is the speed,
568          * though magic-aneg shouldn't prevent this case from occurring
569          */
570
571         return 0;
572 }
573
574 static int marvell88e1111_init(struct mii_phy* phy)
575 {
576         u16 rev;
577
578         /* magic init sequence for rev 0 */
579         rev = sungem_phy_read(phy, MII_PHYSID2) & 0x000f;
580         if (rev == 0) {
581                 sungem_phy_write(phy, 0x1d, 0x000a);
582                 sungem_phy_write(phy, 0x1e, 0x0821);
583
584                 sungem_phy_write(phy, 0x1d, 0x0006);
585                 sungem_phy_write(phy, 0x1e, 0x8600);
586
587                 sungem_phy_write(phy, 0x1d, 0x000b);
588                 sungem_phy_write(phy, 0x1e, 0x0100);
589
590                 sungem_phy_write(phy, 0x1d, 0x0004);
591                 sungem_phy_write(phy, 0x1e, 0x4850);
592         }
593         return 0;
594 }
595
596 #define BCM5421_MODE_MASK       (1 << 5)
597
598 static int bcm5421_poll_link(struct mii_phy* phy)
599 {
600         u32 phy_reg;
601         int mode;
602
603         /* find out in what mode we are */
604         sungem_phy_write(phy, MII_NCONFIG, 0x1000);
605         phy_reg = sungem_phy_read(phy, MII_NCONFIG);
606
607         mode = (phy_reg & BCM5421_MODE_MASK) >> 5;
608
609         if ( mode == BCM54XX_COPPER)
610                 return genmii_poll_link(phy);
611
612         /* try to find out whether we have a link */
613         sungem_phy_write(phy, MII_NCONFIG, 0x2000);
614         phy_reg = sungem_phy_read(phy, MII_NCONFIG);
615
616         if (phy_reg & 0x0020)
617                 return 0;
618         else
619                 return 1;
620 }
621
622 static int bcm5421_read_link(struct mii_phy* phy)
623 {
624         u32 phy_reg;
625         int mode;
626
627         /* find out in what mode we are */
628         sungem_phy_write(phy, MII_NCONFIG, 0x1000);
629         phy_reg = sungem_phy_read(phy, MII_NCONFIG);
630
631         mode = (phy_reg & BCM5421_MODE_MASK ) >> 5;
632
633         if ( mode == BCM54XX_COPPER)
634                 return bcm54xx_read_link(phy);
635
636         phy->speed = SPEED_1000;
637
638         /* find out whether we are running half- or full duplex */
639         sungem_phy_write(phy, MII_NCONFIG, 0x2000);
640         phy_reg = sungem_phy_read(phy, MII_NCONFIG);
641
642         if ( (phy_reg & 0x0080) >> 7)
643                 phy->duplex |=  DUPLEX_HALF;
644         else
645                 phy->duplex |=  DUPLEX_FULL;
646
647         return 0;
648 }
649
650 static int bcm5421_enable_fiber(struct mii_phy* phy, int autoneg)
651 {
652         /* enable fiber mode */
653         sungem_phy_write(phy, MII_NCONFIG, 0x9020);
654         /* LEDs active in both modes, autosense prio = fiber */
655         sungem_phy_write(phy, MII_NCONFIG, 0x945f);
656
657         if (!autoneg) {
658                 /* switch off fibre autoneg */
659                 sungem_phy_write(phy, MII_NCONFIG, 0xfc01);
660                 sungem_phy_write(phy, 0x0b, 0x0004);
661         }
662
663         phy->autoneg = autoneg;
664
665         return 0;
666 }
667
668 #define BCM5461_FIBER_LINK      (1 << 2)
669 #define BCM5461_MODE_MASK       (3 << 1)
670
671 static int bcm5461_poll_link(struct mii_phy* phy)
672 {
673         u32 phy_reg;
674         int mode;
675
676         /* find out in what mode we are */
677         sungem_phy_write(phy, MII_NCONFIG, 0x7c00);
678         phy_reg = sungem_phy_read(phy, MII_NCONFIG);
679
680         mode = (phy_reg & BCM5461_MODE_MASK ) >> 1;
681
682         if ( mode == BCM54XX_COPPER)
683                 return genmii_poll_link(phy);
684
685         /* find out whether we have a link */
686         sungem_phy_write(phy, MII_NCONFIG, 0x7000);
687         phy_reg = sungem_phy_read(phy, MII_NCONFIG);
688
689         if (phy_reg & BCM5461_FIBER_LINK)
690                 return 1;
691         else
692                 return 0;
693 }
694
695 #define BCM5461_FIBER_DUPLEX    (1 << 3)
696
697 static int bcm5461_read_link(struct mii_phy* phy)
698 {
699         u32 phy_reg;
700         int mode;
701
702         /* find out in what mode we are */
703         sungem_phy_write(phy, MII_NCONFIG, 0x7c00);
704         phy_reg = sungem_phy_read(phy, MII_NCONFIG);
705
706         mode = (phy_reg & BCM5461_MODE_MASK ) >> 1;
707
708         if ( mode == BCM54XX_COPPER) {
709                 return bcm54xx_read_link(phy);
710         }
711
712         phy->speed = SPEED_1000;
713
714         /* find out whether we are running half- or full duplex */
715         sungem_phy_write(phy, MII_NCONFIG, 0x7000);
716         phy_reg = sungem_phy_read(phy, MII_NCONFIG);
717
718         if (phy_reg & BCM5461_FIBER_DUPLEX)
719                 phy->duplex |=  DUPLEX_FULL;
720         else
721                 phy->duplex |=  DUPLEX_HALF;
722
723         return 0;
724 }
725
726 static int bcm5461_enable_fiber(struct mii_phy* phy, int autoneg)
727 {
728         /* select fiber mode, enable 1000 base-X registers */
729         sungem_phy_write(phy, MII_NCONFIG, 0xfc0b);
730
731         if (autoneg) {
732                 /* enable fiber with no autonegotiation */
733                 sungem_phy_write(phy, MII_ADVERTISE, 0x01e0);
734                 sungem_phy_write(phy, MII_BMCR, 0x1140);
735         } else {
736                 /* enable fiber with autonegotiation */
737                 sungem_phy_write(phy, MII_BMCR, 0x0140);
738         }
739
740         phy->autoneg = autoneg;
741
742         return 0;
743 }
744
745 static int marvell_setup_aneg(struct mii_phy *phy, u32 advertise)
746 {
747         u16 ctl, adv;
748
749         phy->autoneg = 1;
750         phy->speed = SPEED_10;
751         phy->duplex = DUPLEX_HALF;
752         phy->pause = 0;
753         phy->advertising = advertise;
754
755         /* Setup standard advertise */
756         adv = sungem_phy_read(phy, MII_ADVERTISE);
757         adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4);
758         if (advertise & ADVERTISED_10baseT_Half)
759                 adv |= ADVERTISE_10HALF;
760         if (advertise & ADVERTISED_10baseT_Full)
761                 adv |= ADVERTISE_10FULL;
762         if (advertise & ADVERTISED_100baseT_Half)
763                 adv |= ADVERTISE_100HALF;
764         if (advertise & ADVERTISED_100baseT_Full)
765                 adv |= ADVERTISE_100FULL;
766         if (advertise & ADVERTISED_Pause)
767                 adv |= ADVERTISE_PAUSE_CAP;
768         if (advertise & ADVERTISED_Asym_Pause)
769                 adv |= ADVERTISE_PAUSE_ASYM;
770         sungem_phy_write(phy, MII_ADVERTISE, adv);
771
772         /* Setup 1000BT advertise & enable crossover detect
773          * XXX How do we advertise 1000BT ? Darwin source is
774          * confusing here, they read from specific control and
775          * write to control... Someone has specs for those
776          * beasts ?
777          */
778         adv = sungem_phy_read(phy, MII_M1011_PHY_SPEC_CONTROL);
779         adv |= MII_M1011_PHY_SPEC_CONTROL_AUTO_MDIX;
780         adv &= ~(MII_1000BASETCONTROL_FULLDUPLEXCAP |
781                         MII_1000BASETCONTROL_HALFDUPLEXCAP);
782         if (advertise & SUPPORTED_1000baseT_Half)
783                 adv |= MII_1000BASETCONTROL_HALFDUPLEXCAP;
784         if (advertise & SUPPORTED_1000baseT_Full)
785                 adv |= MII_1000BASETCONTROL_FULLDUPLEXCAP;
786         sungem_phy_write(phy, MII_1000BASETCONTROL, adv);
787
788         /* Start/Restart aneg */
789         ctl = sungem_phy_read(phy, MII_BMCR);
790         ctl |= (BMCR_ANENABLE | BMCR_ANRESTART);
791         sungem_phy_write(phy, MII_BMCR, ctl);
792
793         return 0;
794 }
795
796 static int marvell_setup_forced(struct mii_phy *phy, int speed, int fd)
797 {
798         u16 ctl, ctl2;
799
800         phy->autoneg = 0;
801         phy->speed = speed;
802         phy->duplex = fd;
803         phy->pause = 0;
804
805         ctl = sungem_phy_read(phy, MII_BMCR);
806         ctl &= ~(BMCR_FULLDPLX|BMCR_SPEED100|BMCR_SPD2|BMCR_ANENABLE);
807         ctl |= BMCR_RESET;
808
809         /* Select speed & duplex */
810         switch(speed) {
811         case SPEED_10:
812                 break;
813         case SPEED_100:
814                 ctl |= BMCR_SPEED100;
815                 break;
816         /* I'm not sure about the one below, again, Darwin source is
817          * quite confusing and I lack chip specs
818          */
819         case SPEED_1000:
820                 ctl |= BMCR_SPD2;
821         }
822         if (fd == DUPLEX_FULL)
823                 ctl |= BMCR_FULLDPLX;
824
825         /* Disable crossover. Again, the way Apple does it is strange,
826          * though I don't assume they are wrong ;)
827          */
828         ctl2 = sungem_phy_read(phy, MII_M1011_PHY_SPEC_CONTROL);
829         ctl2 &= ~(MII_M1011_PHY_SPEC_CONTROL_MANUAL_MDIX |
830                 MII_M1011_PHY_SPEC_CONTROL_AUTO_MDIX |
831                 MII_1000BASETCONTROL_FULLDUPLEXCAP |
832                 MII_1000BASETCONTROL_HALFDUPLEXCAP);
833         if (speed == SPEED_1000)
834                 ctl2 |= (fd == DUPLEX_FULL) ?
835                         MII_1000BASETCONTROL_FULLDUPLEXCAP :
836                         MII_1000BASETCONTROL_HALFDUPLEXCAP;
837         sungem_phy_write(phy, MII_1000BASETCONTROL, ctl2);
838
839         // XXX Should we set the sungem to GII now on 1000BT ?
840
841         sungem_phy_write(phy, MII_BMCR, ctl);
842
843         return 0;
844 }
845
846 static int marvell_read_link(struct mii_phy *phy)
847 {
848         u16 status, pmask;
849
850         if (phy->autoneg) {
851                 status = sungem_phy_read(phy, MII_M1011_PHY_SPEC_STATUS);
852                 if ((status & MII_M1011_PHY_SPEC_STATUS_RESOLVED) == 0)
853                         return -EAGAIN;
854                 if (status & MII_M1011_PHY_SPEC_STATUS_1000)
855                         phy->speed = SPEED_1000;
856                 else if (status & MII_M1011_PHY_SPEC_STATUS_100)
857                         phy->speed = SPEED_100;
858                 else
859                         phy->speed = SPEED_10;
860                 if (status & MII_M1011_PHY_SPEC_STATUS_FULLDUPLEX)
861                         phy->duplex = DUPLEX_FULL;
862                 else
863                         phy->duplex = DUPLEX_HALF;
864                 pmask = MII_M1011_PHY_SPEC_STATUS_TX_PAUSE |
865                         MII_M1011_PHY_SPEC_STATUS_RX_PAUSE;
866                 phy->pause = (status & pmask) == pmask;
867         }
868         /* On non-aneg, we assume what we put in BMCR is the speed,
869          * though magic-aneg shouldn't prevent this case from occurring
870          */
871
872         return 0;
873 }
874
875 #define MII_BASIC_FEATURES \
876         (SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full |      \
877          SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full |    \
878          SUPPORTED_Autoneg | SUPPORTED_TP | SUPPORTED_MII |     \
879          SUPPORTED_Pause)
880
881 /* On gigabit capable PHYs, we advertise Pause support but not asym pause
882  * support for now as I'm not sure it's supported and Darwin doesn't do
883  * it neither. --BenH.
884  */
885 #define MII_GBIT_FEATURES \
886         (MII_BASIC_FEATURES |   \
887          SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full)
888
889 /* Broadcom BCM 5201 */
890 static const struct mii_phy_ops bcm5201_phy_ops = {
891         .init           = bcm5201_init,
892         .suspend        = bcm5201_suspend,
893         .setup_aneg     = genmii_setup_aneg,
894         .setup_forced   = genmii_setup_forced,
895         .poll_link      = genmii_poll_link,
896         .read_link      = genmii_read_link,
897 };
898
899 static struct mii_phy_def bcm5201_phy_def = {
900         .phy_id         = 0x00406210,
901         .phy_id_mask    = 0xfffffff0,
902         .name           = "BCM5201",
903         .features       = MII_BASIC_FEATURES,
904         .magic_aneg     = 1,
905         .ops            = &bcm5201_phy_ops
906 };
907
908 /* Broadcom BCM 5221 */
909 static const struct mii_phy_ops bcm5221_phy_ops = {
910         .suspend        = bcm5221_suspend,
911         .init           = bcm5221_init,
912         .setup_aneg     = genmii_setup_aneg,
913         .setup_forced   = genmii_setup_forced,
914         .poll_link      = genmii_poll_link,
915         .read_link      = genmii_read_link,
916 };
917
918 static struct mii_phy_def bcm5221_phy_def = {
919         .phy_id         = 0x004061e0,
920         .phy_id_mask    = 0xfffffff0,
921         .name           = "BCM5221",
922         .features       = MII_BASIC_FEATURES,
923         .magic_aneg     = 1,
924         .ops            = &bcm5221_phy_ops
925 };
926
927 /* Broadcom BCM 5241 */
928 static const struct mii_phy_ops bcm5241_phy_ops = {
929         .suspend        = bcm5241_suspend,
930         .init           = bcm5241_init,
931         .setup_aneg     = genmii_setup_aneg,
932         .setup_forced   = genmii_setup_forced,
933         .poll_link      = genmii_poll_link,
934         .read_link      = genmii_read_link,
935 };
936 static struct mii_phy_def bcm5241_phy_def = {
937         .phy_id         = 0x0143bc30,
938         .phy_id_mask    = 0xfffffff0,
939         .name           = "BCM5241",
940         .features       = MII_BASIC_FEATURES,
941         .magic_aneg     = 1,
942         .ops            = &bcm5241_phy_ops
943 };
944
945 /* Broadcom BCM 5400 */
946 static const struct mii_phy_ops bcm5400_phy_ops = {
947         .init           = bcm5400_init,
948         .suspend        = bcm5400_suspend,
949         .setup_aneg     = bcm54xx_setup_aneg,
950         .setup_forced   = bcm54xx_setup_forced,
951         .poll_link      = genmii_poll_link,
952         .read_link      = bcm54xx_read_link,
953 };
954
955 static struct mii_phy_def bcm5400_phy_def = {
956         .phy_id         = 0x00206040,
957         .phy_id_mask    = 0xfffffff0,
958         .name           = "BCM5400",
959         .features       = MII_GBIT_FEATURES,
960         .magic_aneg     = 1,
961         .ops            = &bcm5400_phy_ops
962 };
963
964 /* Broadcom BCM 5401 */
965 static const struct mii_phy_ops bcm5401_phy_ops = {
966         .init           = bcm5401_init,
967         .suspend        = bcm5401_suspend,
968         .setup_aneg     = bcm54xx_setup_aneg,
969         .setup_forced   = bcm54xx_setup_forced,
970         .poll_link      = genmii_poll_link,
971         .read_link      = bcm54xx_read_link,
972 };
973
974 static struct mii_phy_def bcm5401_phy_def = {
975         .phy_id         = 0x00206050,
976         .phy_id_mask    = 0xfffffff0,
977         .name           = "BCM5401",
978         .features       = MII_GBIT_FEATURES,
979         .magic_aneg     = 1,
980         .ops            = &bcm5401_phy_ops
981 };
982
983 /* Broadcom BCM 5411 */
984 static const struct mii_phy_ops bcm5411_phy_ops = {
985         .init           = bcm5411_init,
986         .suspend        = generic_suspend,
987         .setup_aneg     = bcm54xx_setup_aneg,
988         .setup_forced   = bcm54xx_setup_forced,
989         .poll_link      = genmii_poll_link,
990         .read_link      = bcm54xx_read_link,
991 };
992
993 static struct mii_phy_def bcm5411_phy_def = {
994         .phy_id         = 0x00206070,
995         .phy_id_mask    = 0xfffffff0,
996         .name           = "BCM5411",
997         .features       = MII_GBIT_FEATURES,
998         .magic_aneg     = 1,
999         .ops            = &bcm5411_phy_ops
1000 };
1001
1002 /* Broadcom BCM 5421 */
1003 static const struct mii_phy_ops bcm5421_phy_ops = {
1004         .init           = bcm5421_init,
1005         .suspend        = generic_suspend,
1006         .setup_aneg     = bcm54xx_setup_aneg,
1007         .setup_forced   = bcm54xx_setup_forced,
1008         .poll_link      = bcm5421_poll_link,
1009         .read_link      = bcm5421_read_link,
1010         .enable_fiber   = bcm5421_enable_fiber,
1011 };
1012
1013 static struct mii_phy_def bcm5421_phy_def = {
1014         .phy_id         = 0x002060e0,
1015         .phy_id_mask    = 0xfffffff0,
1016         .name           = "BCM5421",
1017         .features       = MII_GBIT_FEATURES,
1018         .magic_aneg     = 1,
1019         .ops            = &bcm5421_phy_ops
1020 };
1021
1022 /* Broadcom BCM 5421 built-in K2 */
1023 static const struct mii_phy_ops bcm5421k2_phy_ops = {
1024         .init           = bcm5421_init,
1025         .suspend        = generic_suspend,
1026         .setup_aneg     = bcm54xx_setup_aneg,
1027         .setup_forced   = bcm54xx_setup_forced,
1028         .poll_link      = genmii_poll_link,
1029         .read_link      = bcm54xx_read_link,
1030 };
1031
1032 static struct mii_phy_def bcm5421k2_phy_def = {
1033         .phy_id         = 0x002062e0,
1034         .phy_id_mask    = 0xfffffff0,
1035         .name           = "BCM5421-K2",
1036         .features       = MII_GBIT_FEATURES,
1037         .magic_aneg     = 1,
1038         .ops            = &bcm5421k2_phy_ops
1039 };
1040
1041 static const struct mii_phy_ops bcm5461_phy_ops = {
1042         .init           = bcm5421_init,
1043         .suspend        = generic_suspend,
1044         .setup_aneg     = bcm54xx_setup_aneg,
1045         .setup_forced   = bcm54xx_setup_forced,
1046         .poll_link      = bcm5461_poll_link,
1047         .read_link      = bcm5461_read_link,
1048         .enable_fiber   = bcm5461_enable_fiber,
1049 };
1050
1051 static struct mii_phy_def bcm5461_phy_def = {
1052         .phy_id         = 0x002060c0,
1053         .phy_id_mask    = 0xfffffff0,
1054         .name           = "BCM5461",
1055         .features       = MII_GBIT_FEATURES,
1056         .magic_aneg     = 1,
1057         .ops            = &bcm5461_phy_ops
1058 };
1059
1060 /* Broadcom BCM 5462 built-in Vesta */
1061 static const struct mii_phy_ops bcm5462V_phy_ops = {
1062         .init           = bcm5421_init,
1063         .suspend        = generic_suspend,
1064         .setup_aneg     = bcm54xx_setup_aneg,
1065         .setup_forced   = bcm54xx_setup_forced,
1066         .poll_link      = genmii_poll_link,
1067         .read_link      = bcm54xx_read_link,
1068 };
1069
1070 static struct mii_phy_def bcm5462V_phy_def = {
1071         .phy_id         = 0x002060d0,
1072         .phy_id_mask    = 0xfffffff0,
1073         .name           = "BCM5462-Vesta",
1074         .features       = MII_GBIT_FEATURES,
1075         .magic_aneg     = 1,
1076         .ops            = &bcm5462V_phy_ops
1077 };
1078
1079 /* Marvell 88E1101 amd 88E1111 */
1080 static const struct mii_phy_ops marvell88e1101_phy_ops = {
1081         .suspend        = generic_suspend,
1082         .setup_aneg     = marvell_setup_aneg,
1083         .setup_forced   = marvell_setup_forced,
1084         .poll_link      = genmii_poll_link,
1085         .read_link      = marvell_read_link
1086 };
1087
1088 static const struct mii_phy_ops marvell88e1111_phy_ops = {
1089         .init           = marvell88e1111_init,
1090         .suspend        = generic_suspend,
1091         .setup_aneg     = marvell_setup_aneg,
1092         .setup_forced   = marvell_setup_forced,
1093         .poll_link      = genmii_poll_link,
1094         .read_link      = marvell_read_link
1095 };
1096
1097 /* two revs in darwin for the 88e1101 ... I could use a datasheet
1098  * to get the proper names...
1099  */
1100 static struct mii_phy_def marvell88e1101v1_phy_def = {
1101         .phy_id         = 0x01410c20,
1102         .phy_id_mask    = 0xfffffff0,
1103         .name           = "Marvell 88E1101v1",
1104         .features       = MII_GBIT_FEATURES,
1105         .magic_aneg     = 1,
1106         .ops            = &marvell88e1101_phy_ops
1107 };
1108 static struct mii_phy_def marvell88e1101v2_phy_def = {
1109         .phy_id         = 0x01410c60,
1110         .phy_id_mask    = 0xfffffff0,
1111         .name           = "Marvell 88E1101v2",
1112         .features       = MII_GBIT_FEATURES,
1113         .magic_aneg     = 1,
1114         .ops            = &marvell88e1101_phy_ops
1115 };
1116 static struct mii_phy_def marvell88e1111_phy_def = {
1117         .phy_id         = 0x01410cc0,
1118         .phy_id_mask    = 0xfffffff0,
1119         .name           = "Marvell 88E1111",
1120         .features       = MII_GBIT_FEATURES,
1121         .magic_aneg     = 1,
1122         .ops            = &marvell88e1111_phy_ops
1123 };
1124
1125 /* Generic implementation for most 10/100 PHYs */
1126 static const struct mii_phy_ops generic_phy_ops = {
1127         .setup_aneg     = genmii_setup_aneg,
1128         .setup_forced   = genmii_setup_forced,
1129         .poll_link      = genmii_poll_link,
1130         .read_link      = genmii_read_link
1131 };
1132
1133 static struct mii_phy_def genmii_phy_def = {
1134         .phy_id         = 0x00000000,
1135         .phy_id_mask    = 0x00000000,
1136         .name           = "Generic MII",
1137         .features       = MII_BASIC_FEATURES,
1138         .magic_aneg     = 0,
1139         .ops            = &generic_phy_ops
1140 };
1141
1142 static struct mii_phy_def* mii_phy_table[] = {
1143         &bcm5201_phy_def,
1144         &bcm5221_phy_def,
1145         &bcm5241_phy_def,
1146         &bcm5400_phy_def,
1147         &bcm5401_phy_def,
1148         &bcm5411_phy_def,
1149         &bcm5421_phy_def,
1150         &bcm5421k2_phy_def,
1151         &bcm5461_phy_def,
1152         &bcm5462V_phy_def,
1153         &marvell88e1101v1_phy_def,
1154         &marvell88e1101v2_phy_def,
1155         &marvell88e1111_phy_def,
1156         &genmii_phy_def,
1157         NULL
1158 };
1159
1160 int sungem_phy_probe(struct mii_phy *phy, int mii_id)
1161 {
1162         int rc;
1163         u32 id;
1164         struct mii_phy_def* def;
1165         int i;
1166
1167         /* We do not reset the mii_phy structure as the driver
1168          * may re-probe the PHY regulary
1169          */
1170         phy->mii_id = mii_id;
1171
1172         /* Take PHY out of isloate mode and reset it. */
1173         rc = reset_one_mii_phy(phy, mii_id);
1174         if (rc)
1175                 goto fail;
1176
1177         /* Read ID and find matching entry */
1178         id = (sungem_phy_read(phy, MII_PHYSID1) << 16 | sungem_phy_read(phy, MII_PHYSID2));
1179         printk(KERN_DEBUG KBUILD_MODNAME ": " "PHY ID: %x, addr: %x\n",
1180                id, mii_id);
1181         for (i=0; (def = mii_phy_table[i]) != NULL; i++)
1182                 if ((id & def->phy_id_mask) == def->phy_id)
1183                         break;
1184         /* Should never be NULL (we have a generic entry), but... */
1185         if (def == NULL)
1186                 goto fail;
1187
1188         phy->def = def;
1189
1190         return 0;
1191 fail:
1192         phy->speed = 0;
1193         phy->duplex = 0;
1194         phy->pause = 0;
1195         phy->advertising = 0;
1196         return -ENODEV;
1197 }
1198
1199 EXPORT_SYMBOL(sungem_phy_probe);
1200 MODULE_LICENSE("GPL");