projects / openwrt / openwrt.git / blob
? search:


75db1f120b6e3ee52cb45d054a3eca48cb8cd900
[openwrt/openwrt.git] / target / linux / generic / files / drivers / net / phy / ar8216.c
1 /*
2 * ar8216.c: AR8216 switch driver
3 *
4 * Copyright (C) 2009 Felix Fietkau <nbd@openwrt.org>
5 * Copyright (C) 2011-2012 Gabor Juhos <juhosg@openwrt.org>
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 */
17
18 #include <linux/if.h>
19 #include <linux/module.h>
20 #include <linux/init.h>
21 #include <linux/list.h>
22 #include <linux/if_ether.h>
23 #include <linux/skbuff.h>
24 #include <linux/netdevice.h>
25 #include <linux/netlink.h>
26 #include <linux/bitops.h>
27 #include <net/genetlink.h>
28 #include <linux/switch.h>
29 #include <linux/delay.h>
30 #include <linux/phy.h>
31 #include <linux/netdevice.h>
32 #include <linux/etherdevice.h>
33 #include <linux/lockdep.h>
34 #include <linux/ar8216_platform.h>
35 #include <linux/workqueue.h>
36 #include <linux/version.h>
37
38 #include "ar8216.h"
39
40 extern const struct ar8xxx_chip ar8327_chip;
41 extern const struct ar8xxx_chip ar8337_chip;
42
43 #define AR8XXX_MIB_WORK_DELAY 2000 /* msecs */
44
45 #define MIB_DESC(_s , _o, _n) \
46 { \
47 .size = (_s), \
48 .offset = (_o), \
49 .name = (_n), \
50 }
51
52 static const struct ar8xxx_mib_desc ar8216_mibs[] = {
53 MIB_DESC(1, AR8216_STATS_RXBROAD, "RxBroad"),
54 MIB_DESC(1, AR8216_STATS_RXPAUSE, "RxPause"),
55 MIB_DESC(1, AR8216_STATS_RXMULTI, "RxMulti"),
56 MIB_DESC(1, AR8216_STATS_RXFCSERR, "RxFcsErr"),
57 MIB_DESC(1, AR8216_STATS_RXALIGNERR, "RxAlignErr"),
58 MIB_DESC(1, AR8216_STATS_RXRUNT, "RxRunt"),
59 MIB_DESC(1, AR8216_STATS_RXFRAGMENT, "RxFragment"),
60 MIB_DESC(1, AR8216_STATS_RX64BYTE, "Rx64Byte"),
61 MIB_DESC(1, AR8216_STATS_RX128BYTE, "Rx128Byte"),
62 MIB_DESC(1, AR8216_STATS_RX256BYTE, "Rx256Byte"),
63 MIB_DESC(1, AR8216_STATS_RX512BYTE, "Rx512Byte"),
64 MIB_DESC(1, AR8216_STATS_RX1024BYTE, "Rx1024Byte"),
65 MIB_DESC(1, AR8216_STATS_RXMAXBYTE, "RxMaxByte"),
66 MIB_DESC(1, AR8216_STATS_RXTOOLONG, "RxTooLong"),
67 MIB_DESC(2, AR8216_STATS_RXGOODBYTE, "RxGoodByte"),
68 MIB_DESC(2, AR8216_STATS_RXBADBYTE, "RxBadByte"),
69 MIB_DESC(1, AR8216_STATS_RXOVERFLOW, "RxOverFlow"),
70 MIB_DESC(1, AR8216_STATS_FILTERED, "Filtered"),
71 MIB_DESC(1, AR8216_STATS_TXBROAD, "TxBroad"),
72 MIB_DESC(1, AR8216_STATS_TXPAUSE, "TxPause"),
73 MIB_DESC(1, AR8216_STATS_TXMULTI, "TxMulti"),
74 MIB_DESC(1, AR8216_STATS_TXUNDERRUN, "TxUnderRun"),
75 MIB_DESC(1, AR8216_STATS_TX64BYTE, "Tx64Byte"),
76 MIB_DESC(1, AR8216_STATS_TX128BYTE, "Tx128Byte"),
77 MIB_DESC(1, AR8216_STATS_TX256BYTE, "Tx256Byte"),
78 MIB_DESC(1, AR8216_STATS_TX512BYTE, "Tx512Byte"),
79 MIB_DESC(1, AR8216_STATS_TX1024BYTE, "Tx1024Byte"),
80 MIB_DESC(1, AR8216_STATS_TXMAXBYTE, "TxMaxByte"),
81 MIB_DESC(1, AR8216_STATS_TXOVERSIZE, "TxOverSize"),
82 MIB_DESC(2, AR8216_STATS_TXBYTE, "TxByte"),
83 MIB_DESC(1, AR8216_STATS_TXCOLLISION, "TxCollision"),
84 MIB_DESC(1, AR8216_STATS_TXABORTCOL, "TxAbortCol"),
85 MIB_DESC(1, AR8216_STATS_TXMULTICOL, "TxMultiCol"),
86 MIB_DESC(1, AR8216_STATS_TXSINGLECOL, "TxSingleCol"),
87 MIB_DESC(1, AR8216_STATS_TXEXCDEFER, "TxExcDefer"),
88 MIB_DESC(1, AR8216_STATS_TXDEFER, "TxDefer"),
89 MIB_DESC(1, AR8216_STATS_TXLATECOL, "TxLateCol"),
90 };
91
92 const struct ar8xxx_mib_desc ar8236_mibs[39] = {
93 MIB_DESC(1, AR8236_STATS_RXBROAD, "RxBroad"),
94 MIB_DESC(1, AR8236_STATS_RXPAUSE, "RxPause"),
95 MIB_DESC(1, AR8236_STATS_RXMULTI, "RxMulti"),
96 MIB_DESC(1, AR8236_STATS_RXFCSERR, "RxFcsErr"),
97 MIB_DESC(1, AR8236_STATS_RXALIGNERR, "RxAlignErr"),
98 MIB_DESC(1, AR8236_STATS_RXRUNT, "RxRunt"),
99 MIB_DESC(1, AR8236_STATS_RXFRAGMENT, "RxFragment"),
100 MIB_DESC(1, AR8236_STATS_RX64BYTE, "Rx64Byte"),
101 MIB_DESC(1, AR8236_STATS_RX128BYTE, "Rx128Byte"),
102 MIB_DESC(1, AR8236_STATS_RX256BYTE, "Rx256Byte"),
103 MIB_DESC(1, AR8236_STATS_RX512BYTE, "Rx512Byte"),
104 MIB_DESC(1, AR8236_STATS_RX1024BYTE, "Rx1024Byte"),
105 MIB_DESC(1, AR8236_STATS_RX1518BYTE, "Rx1518Byte"),
106 MIB_DESC(1, AR8236_STATS_RXMAXBYTE, "RxMaxByte"),
107 MIB_DESC(1, AR8236_STATS_RXTOOLONG, "RxTooLong"),
108 MIB_DESC(2, AR8236_STATS_RXGOODBYTE, "RxGoodByte"),
109 MIB_DESC(2, AR8236_STATS_RXBADBYTE, "RxBadByte"),
110 MIB_DESC(1, AR8236_STATS_RXOVERFLOW, "RxOverFlow"),
111 MIB_DESC(1, AR8236_STATS_FILTERED, "Filtered"),
112 MIB_DESC(1, AR8236_STATS_TXBROAD, "TxBroad"),
113 MIB_DESC(1, AR8236_STATS_TXPAUSE, "TxPause"),
114 MIB_DESC(1, AR8236_STATS_TXMULTI, "TxMulti"),
115 MIB_DESC(1, AR8236_STATS_TXUNDERRUN, "TxUnderRun"),
116 MIB_DESC(1, AR8236_STATS_TX64BYTE, "Tx64Byte"),
117 MIB_DESC(1, AR8236_STATS_TX128BYTE, "Tx128Byte"),
118 MIB_DESC(1, AR8236_STATS_TX256BYTE, "Tx256Byte"),
119 MIB_DESC(1, AR8236_STATS_TX512BYTE, "Tx512Byte"),
120 MIB_DESC(1, AR8236_STATS_TX1024BYTE, "Tx1024Byte"),
121 MIB_DESC(1, AR8236_STATS_TX1518BYTE, "Tx1518Byte"),
122 MIB_DESC(1, AR8236_STATS_TXMAXBYTE, "TxMaxByte"),
123 MIB_DESC(1, AR8236_STATS_TXOVERSIZE, "TxOverSize"),
124 MIB_DESC(2, AR8236_STATS_TXBYTE, "TxByte"),
125 MIB_DESC(1, AR8236_STATS_TXCOLLISION, "TxCollision"),
126 MIB_DESC(1, AR8236_STATS_TXABORTCOL, "TxAbortCol"),
127 MIB_DESC(1, AR8236_STATS_TXMULTICOL, "TxMultiCol"),
128 MIB_DESC(1, AR8236_STATS_TXSINGLECOL, "TxSingleCol"),
129 MIB_DESC(1, AR8236_STATS_TXEXCDEFER, "TxExcDefer"),
130 MIB_DESC(1, AR8236_STATS_TXDEFER, "TxDefer"),
131 MIB_DESC(1, AR8236_STATS_TXLATECOL, "TxLateCol"),
132 };
133
134 static DEFINE_MUTEX(ar8xxx_dev_list_lock);
135 static LIST_HEAD(ar8xxx_dev_list);
136
137 /* inspired by phy_poll_reset in drivers/net/phy/phy_device.c */
138 static int
139 ar8xxx_phy_poll_reset(struct mii_bus *bus)
140 {
141 unsigned int sleep_msecs = 20;
142 int ret, elapsed, i;
143
144 for (elapsed = sleep_msecs; elapsed <= 600;
145 elapsed += sleep_msecs) {
146 msleep(sleep_msecs);
147 for (i = 0; i < AR8XXX_NUM_PHYS; i++) {
148 ret = mdiobus_read(bus, i, MII_BMCR);
149 if (ret < 0)
150 return ret;
151 if (ret & BMCR_RESET)
152 break;
153 if (i == AR8XXX_NUM_PHYS - 1) {
154 usleep_range(1000, 2000);
155 return 0;
156 }
157 }
158 }
159 return -ETIMEDOUT;
160 }
161
162 static int
163 ar8xxx_phy_check_aneg(struct phy_device *phydev)
164 {
165 int ret;
166
167 if (phydev->autoneg != AUTONEG_ENABLE)
168 return 0;
169 /*
170 * BMCR_ANENABLE might have been cleared
171 * by phy_init_hw in certain kernel versions
172 * therefore check for it
173 */
174 ret = phy_read(phydev, MII_BMCR);
175 if (ret < 0)
176 return ret;
177 if (ret & BMCR_ANENABLE)
178 return 0;
179
180 dev_info(&phydev->dev, "ANEG disabled, re-enabling ...\n");
181 ret |= BMCR_ANENABLE | BMCR_ANRESTART;
182 return phy_write(phydev, MII_BMCR, ret);
183 }
184
185 void
186 ar8xxx_phy_init(struct ar8xxx_priv *priv)
187 {
188 int i;
189 struct mii_bus *bus;
190
191 bus = priv->mii_bus;
192 for (i = 0; i < AR8XXX_NUM_PHYS; i++) {
193 if (priv->chip->phy_fixup)
194 priv->chip->phy_fixup(priv, i);
195
196 /* initialize the port itself */
197 mdiobus_write(bus, i, MII_ADVERTISE,
198 ADVERTISE_ALL | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
199 if (ar8xxx_has_gige(priv))
200 mdiobus_write(bus, i, MII_CTRL1000, ADVERTISE_1000FULL);
201 mdiobus_write(bus, i, MII_BMCR, BMCR_RESET | BMCR_ANENABLE);
202 }
203
204 ar8xxx_phy_poll_reset(bus);
205 }
206
207 u32
208 ar8xxx_mii_read32(struct ar8xxx_priv *priv, int phy_id, int regnum)
209 {
210 struct mii_bus *bus = priv->mii_bus;
211 u16 lo, hi;
212
213 lo = bus->read(bus, phy_id, regnum);
214 hi = bus->read(bus, phy_id, regnum + 1);
215
216 return (hi << 16) | lo;
217 }
218
219 void
220 ar8xxx_mii_write32(struct ar8xxx_priv *priv, int phy_id, int regnum, u32 val)
221 {
222 struct mii_bus *bus = priv->mii_bus;
223 u16 lo, hi;
224
225 lo = val & 0xffff;
226 hi = (u16) (val >> 16);
227
228 if (priv->chip->mii_lo_first)
229 {
230 bus->write(bus, phy_id, regnum, lo);
231 bus->write(bus, phy_id, regnum + 1, hi);
232 } else {
233 bus->write(bus, phy_id, regnum + 1, hi);
234 bus->write(bus, phy_id, regnum, lo);
235 }
236 }
237
238 u32
239 ar8xxx_read(struct ar8xxx_priv *priv, int reg)
240 {
241 struct mii_bus *bus = priv->mii_bus;
242 u16 r1, r2, page;
243 u32 val;
244
245 split_addr((u32) reg, &r1, &r2, &page);
246
247 mutex_lock(&bus->mdio_lock);
248
249 bus->write(bus, 0x18, 0, page);
250 wait_for_page_switch();
251 val = ar8xxx_mii_read32(priv, 0x10 | r2, r1);
252
253 mutex_unlock(&bus->mdio_lock);
254
255 return val;
256 }
257
258 void
259 ar8xxx_write(struct ar8xxx_priv *priv, int reg, u32 val)
260 {
261 struct mii_bus *bus = priv->mii_bus;
262 u16 r1, r2, page;
263
264 split_addr((u32) reg, &r1, &r2, &page);
265
266 mutex_lock(&bus->mdio_lock);
267
268 bus->write(bus, 0x18, 0, page);
269 wait_for_page_switch();
270 ar8xxx_mii_write32(priv, 0x10 | r2, r1, val);
271
272 mutex_unlock(&bus->mdio_lock);
273 }
274
275 u32
276 ar8xxx_rmw(struct ar8xxx_priv *priv, int reg, u32 mask, u32 val)
277 {
278 struct mii_bus *bus = priv->mii_bus;
279 u16 r1, r2, page;
280 u32 ret;
281
282 split_addr((u32) reg, &r1, &r2, &page);
283
284 mutex_lock(&bus->mdio_lock);
285
286 bus->write(bus, 0x18, 0, page);
287 wait_for_page_switch();
288
289 ret = ar8xxx_mii_read32(priv, 0x10 | r2, r1);
290 ret &= ~mask;
291 ret |= val;
292 ar8xxx_mii_write32(priv, 0x10 | r2, r1, ret);
293
294 mutex_unlock(&bus->mdio_lock);
295
296 return ret;
297 }
298
299 void
300 ar8xxx_phy_dbg_write(struct ar8xxx_priv *priv, int phy_addr,
301 u16 dbg_addr, u16 dbg_data)
302 {
303 struct mii_bus *bus = priv->mii_bus;
304
305 mutex_lock(&bus->mdio_lock);
306 bus->write(bus, phy_addr, MII_ATH_DBG_ADDR, dbg_addr);
307 bus->write(bus, phy_addr, MII_ATH_DBG_DATA, dbg_data);
308 mutex_unlock(&bus->mdio_lock);
309 }
310
311 void
312 ar8xxx_phy_mmd_write(struct ar8xxx_priv *priv, int phy_addr, u16 addr, u16 data)
313 {
314 struct mii_bus *bus = priv->mii_bus;
315
316 mutex_lock(&bus->mdio_lock);
317 bus->write(bus, phy_addr, MII_ATH_MMD_ADDR, addr);
318 bus->write(bus, phy_addr, MII_ATH_MMD_DATA, data);
319 mutex_unlock(&bus->mdio_lock);
320 }
321
322 u16
323 ar8xxx_phy_mmd_read(struct ar8xxx_priv *priv, int phy_addr, u16 addr)
324 {
325 struct mii_bus *bus = priv->mii_bus;
326 u16 data;
327
328 mutex_lock(&bus->mdio_lock);
329 bus->write(bus, phy_addr, MII_ATH_MMD_ADDR, addr);
330 data = bus->read(bus, phy_addr, MII_ATH_MMD_DATA);
331 mutex_unlock(&bus->mdio_lock);
332
333 return data;
334 }
335
336 static int
337 ar8xxx_reg_wait(struct ar8xxx_priv *priv, u32 reg, u32 mask, u32 val,
338 unsigned timeout)
339 {
340 int i;
341
342 for (i = 0; i < timeout; i++) {
343 u32 t;
344
345 t = ar8xxx_read(priv, reg);
346 if ((t & mask) == val)
347 return 0;
348
349 usleep_range(1000, 2000);
350 }
351
352 return -ETIMEDOUT;
353 }
354
355 static int
356 ar8xxx_mib_op(struct ar8xxx_priv *priv, u32 op)
357 {
358 unsigned mib_func = priv->chip->mib_func;
359 int ret;
360
361 lockdep_assert_held(&priv->mib_lock);
362
363 /* Capture the hardware statistics for all ports */
364 ar8xxx_rmw(priv, mib_func, AR8216_MIB_FUNC, (op << AR8216_MIB_FUNC_S));
365
366 /* Wait for the capturing to complete. */
367 ret = ar8xxx_reg_wait(priv, mib_func, AR8216_MIB_BUSY, 0, 10);
368 if (ret)
369 goto out;
370
371 ret = 0;
372
373 out:
374 return ret;
375 }
376
377 static int
378 ar8xxx_mib_capture(struct ar8xxx_priv *priv)
379 {
380 return ar8xxx_mib_op(priv, AR8216_MIB_FUNC_CAPTURE);
381 }
382
383 static int
384 ar8xxx_mib_flush(struct ar8xxx_priv *priv)
385 {
386 return ar8xxx_mib_op(priv, AR8216_MIB_FUNC_FLUSH);
387 }
388
389 static void
390 ar8xxx_mib_fetch_port_stat(struct ar8xxx_priv *priv, int port, bool flush)
391 {
392 unsigned int base;
393 u64 *mib_stats;
394 int i;
395
396 WARN_ON(port >= priv->dev.ports);
397
398 lockdep_assert_held(&priv->mib_lock);
399
400 base = priv->chip->reg_port_stats_start +
401 priv->chip->reg_port_stats_length * port;
402
403 mib_stats = &priv->mib_stats[port * priv->chip->num_mibs];
404 for (i = 0; i < priv->chip->num_mibs; i++) {
405 const struct ar8xxx_mib_desc *mib;
406 u64 t;
407
408 mib = &priv->chip->mib_decs[i];
409 t = ar8xxx_read(priv, base + mib->offset);
410 if (mib->size == 2) {
411 u64 hi;
412
413 hi = ar8xxx_read(priv, base + mib->offset + 4);
414 t |= hi << 32;
415 }
416
417 if (flush)
418 mib_stats[i] = 0;
419 else
420 mib_stats[i] += t;
421 }
422 }
423
424 static void
425 ar8216_read_port_link(struct ar8xxx_priv *priv, int port,
426 struct switch_port_link *link)
427 {
428 u32 status;
429 u32 speed;
430
431 memset(link, '\0', sizeof(*link));
432
433 status = priv->chip->read_port_status(priv, port);
434
435 link->aneg = !!(status & AR8216_PORT_STATUS_LINK_AUTO);
436 if (link->aneg) {
437 link->link = !!(status & AR8216_PORT_STATUS_LINK_UP);
438 } else {
439 link->link = true;
440
441 if (priv->get_port_link) {
442 int err;
443
444 err = priv->get_port_link(port);
445 if (err >= 0)
446 link->link = !!err;
447 }
448 }
449
450 if (!link->link)
451 return;
452
453 link->duplex = !!(status & AR8216_PORT_STATUS_DUPLEX);
454 link->tx_flow = !!(status & AR8216_PORT_STATUS_TXFLOW);
455 link->rx_flow = !!(status & AR8216_PORT_STATUS_RXFLOW);
456
457 if (link->aneg && link->duplex && priv->chip->read_port_eee_status)
458 link->eee = priv->chip->read_port_eee_status(priv, port);
459
460 speed = (status & AR8216_PORT_STATUS_SPEED) >>
461 AR8216_PORT_STATUS_SPEED_S;
462
463 switch (speed) {
464 case AR8216_PORT_SPEED_10M:
465 link->speed = SWITCH_PORT_SPEED_10;
466 break;
467 case AR8216_PORT_SPEED_100M:
468 link->speed = SWITCH_PORT_SPEED_100;
469 break;
470 case AR8216_PORT_SPEED_1000M:
471 link->speed = SWITCH_PORT_SPEED_1000;
472 break;
473 default:
474 link->speed = SWITCH_PORT_SPEED_UNKNOWN;
475 break;
476 }
477 }
478
479 static struct sk_buff *
480 ar8216_mangle_tx(struct net_device *dev, struct sk_buff *skb)
481 {
482 struct ar8xxx_priv *priv = dev->phy_ptr;
483 unsigned char *buf;
484
485 if (unlikely(!priv))
486 goto error;
487
488 if (!priv->vlan)
489 goto send;
490
491 if (unlikely(skb_headroom(skb) < 2)) {
492 if (pskb_expand_head(skb, 2, 0, GFP_ATOMIC) < 0)
493 goto error;
494 }
495
496 buf = skb_push(skb, 2);
497 buf[0] = 0x10;
498 buf[1] = 0x80;
499
500 send:
501 return skb;
502
503 error:
504 dev_kfree_skb_any(skb);
505 return NULL;
506 }
507
508 static void
509 ar8216_mangle_rx(struct net_device *dev, struct sk_buff *skb)
510 {
511 struct ar8xxx_priv *priv;
512 unsigned char *buf;
513 int port, vlan;
514
515 priv = dev->phy_ptr;
516 if (!priv)
517 return;
518
519 /* don't strip the header if vlan mode is disabled */
520 if (!priv->vlan)
521 return;
522
523 /* strip header, get vlan id */
524 buf = skb->data;
525 skb_pull(skb, 2);
526
527 /* check for vlan header presence */
528 if ((buf[12 + 2] != 0x81) || (buf[13 + 2] != 0x00))
529 return;
530
531 port = buf[0] & 0xf;
532
533 /* no need to fix up packets coming from a tagged source */
534 if (priv->vlan_tagged & (1 << port))
535 return;
536
537 /* lookup port vid from local table, the switch passes an invalid vlan id */
538 vlan = priv->vlan_id[priv->pvid[port]];
539
540 buf[14 + 2] &= 0xf0;
541 buf[14 + 2] |= vlan >> 8;
542 buf[15 + 2] = vlan & 0xff;
543 }
544
545 int
546 ar8216_wait_bit(struct ar8xxx_priv *priv, int reg, u32 mask, u32 val)
547 {
548 int timeout = 20;
549 u32 t = 0;
550
551 while (1) {
552 t = ar8xxx_read(priv, reg);
553 if ((t & mask) == val)
554 return 0;
555
556 if (timeout-- <= 0)
557 break;
558
559 udelay(10);
560 }
561
562 pr_err("ar8216: timeout on reg %08x: %08x & %08x != %08x\n",
563 (unsigned int) reg, t, mask, val);
564 return -ETIMEDOUT;
565 }
566
567 static void
568 ar8216_vtu_op(struct ar8xxx_priv *priv, u32 op, u32 val)
569 {
570 if (ar8216_wait_bit(priv, AR8216_REG_VTU, AR8216_VTU_ACTIVE, 0))
571 return;
572 if ((op & AR8216_VTU_OP) == AR8216_VTU_OP_LOAD) {
573 val &= AR8216_VTUDATA_MEMBER;
574 val |= AR8216_VTUDATA_VALID;
575 ar8xxx_write(priv, AR8216_REG_VTU_DATA, val);
576 }
577 op |= AR8216_VTU_ACTIVE;
578 ar8xxx_write(priv, AR8216_REG_VTU, op);
579 }
580
581 static void
582 ar8216_vtu_flush(struct ar8xxx_priv *priv)
583 {
584 ar8216_vtu_op(priv, AR8216_VTU_OP_FLUSH, 0);
585 }
586
587 static void
588 ar8216_vtu_load_vlan(struct ar8xxx_priv *priv, u32 vid, u32 port_mask)
589 {
590 u32 op;
591
592 op = AR8216_VTU_OP_LOAD | (vid << AR8216_VTU_VID_S);
593 ar8216_vtu_op(priv, op, port_mask);
594 }
595
596 static int
597 ar8216_atu_flush(struct ar8xxx_priv *priv)
598 {
599 int ret;
600
601 ret = ar8216_wait_bit(priv, AR8216_REG_ATU_FUNC0, AR8216_ATU_ACTIVE, 0);
602 if (!ret)
603 ar8xxx_write(priv, AR8216_REG_ATU_FUNC0, AR8216_ATU_OP_FLUSH |
604 AR8216_ATU_ACTIVE);
605
606 return ret;
607 }
608
609 static int
610 ar8216_atu_flush_port(struct ar8xxx_priv *priv, int port)
611 {
612 u32 t;
613 int ret;
614
615 ret = ar8216_wait_bit(priv, AR8216_REG_ATU_FUNC0, AR8216_ATU_ACTIVE, 0);
616 if (!ret) {
617 t = (port << AR8216_ATU_PORT_NUM_S) | AR8216_ATU_OP_FLUSH_PORT;
618 t |= AR8216_ATU_ACTIVE;
619 ar8xxx_write(priv, AR8216_REG_ATU_FUNC0, t);
620 }
621
622 return ret;
623 }
624
625 static u32
626 ar8216_read_port_status(struct ar8xxx_priv *priv, int port)
627 {
628 return ar8xxx_read(priv, AR8216_REG_PORT_STATUS(port));
629 }
630
631 static void
632 ar8216_setup_port(struct ar8xxx_priv *priv, int port, u32 members)
633 {
634 u32 header;
635 u32 egress, ingress;
636 u32 pvid;
637
638 if (priv->vlan) {
639 pvid = priv->vlan_id[priv->pvid[port]];
640 if (priv->vlan_tagged & (1 << port))
641 egress = AR8216_OUT_ADD_VLAN;
642 else
643 egress = AR8216_OUT_STRIP_VLAN;
644 ingress = AR8216_IN_SECURE;
645 } else {
646 pvid = port;
647 egress = AR8216_OUT_KEEP;
648 ingress = AR8216_IN_PORT_ONLY;
649 }
650
651 if (chip_is_ar8216(priv) && priv->vlan && port == AR8216_PORT_CPU)
652 header = AR8216_PORT_CTRL_HEADER;
653 else
654 header = 0;
655
656 ar8xxx_rmw(priv, AR8216_REG_PORT_CTRL(port),
657 AR8216_PORT_CTRL_LEARN | AR8216_PORT_CTRL_VLAN_MODE |
658 AR8216_PORT_CTRL_SINGLE_VLAN | AR8216_PORT_CTRL_STATE |
659 AR8216_PORT_CTRL_HEADER | AR8216_PORT_CTRL_LEARN_LOCK,
660 AR8216_PORT_CTRL_LEARN | header |
661 (egress << AR8216_PORT_CTRL_VLAN_MODE_S) |
662 (AR8216_PORT_STATE_FORWARD << AR8216_PORT_CTRL_STATE_S));
663
664 ar8xxx_rmw(priv, AR8216_REG_PORT_VLAN(port),
665 AR8216_PORT_VLAN_DEST_PORTS | AR8216_PORT_VLAN_MODE |
666 AR8216_PORT_VLAN_DEFAULT_ID,
667 (members << AR8216_PORT_VLAN_DEST_PORTS_S) |
668 (ingress << AR8216_PORT_VLAN_MODE_S) |
669 (pvid << AR8216_PORT_VLAN_DEFAULT_ID_S));
670 }
671
672 static int
673 ar8216_hw_init(struct ar8xxx_priv *priv)
674 {
675 if (priv->initialized)
676 return 0;
677
678 ar8xxx_phy_init(priv);
679
680 priv->initialized = true;
681 return 0;
682 }
683
684 static void
685 ar8216_init_globals(struct ar8xxx_priv *priv)
686 {
687 /* standard atheros magic */
688 ar8xxx_write(priv, 0x38, 0xc000050e);
689
690 ar8xxx_rmw(priv, AR8216_REG_GLOBAL_CTRL,
691 AR8216_GCTRL_MTU, 1518 + 8 + 2);
692 }
693
694 static void
695 ar8216_init_port(struct ar8xxx_priv *priv, int port)
696 {
697 /* Enable port learning and tx */
698 ar8xxx_write(priv, AR8216_REG_PORT_CTRL(port),
699 AR8216_PORT_CTRL_LEARN |
700 (4 << AR8216_PORT_CTRL_STATE_S));
701
702 ar8xxx_write(priv, AR8216_REG_PORT_VLAN(port), 0);
703
704 if (port == AR8216_PORT_CPU) {
705 ar8xxx_write(priv, AR8216_REG_PORT_STATUS(port),
706 AR8216_PORT_STATUS_LINK_UP |
707 (ar8xxx_has_gige(priv) ?
708 AR8216_PORT_SPEED_1000M : AR8216_PORT_SPEED_100M) |
709 AR8216_PORT_STATUS_TXMAC |
710 AR8216_PORT_STATUS_RXMAC |
711 (chip_is_ar8316(priv) ? AR8216_PORT_STATUS_RXFLOW : 0) |
712 (chip_is_ar8316(priv) ? AR8216_PORT_STATUS_TXFLOW : 0) |
713 AR8216_PORT_STATUS_DUPLEX);
714 } else {
715 ar8xxx_write(priv, AR8216_REG_PORT_STATUS(port),
716 AR8216_PORT_STATUS_LINK_AUTO);
717 }
718 }
719
720 static void
721 ar8216_wait_atu_ready(struct ar8xxx_priv *priv, u16 r2, u16 r1)
722 {
723 int timeout = 20;
724
725 while (ar8xxx_mii_read32(priv, r2, r1) & AR8216_ATU_ACTIVE && --timeout)
726 udelay(10);
727
728 if (!timeout)
729 pr_err("ar8216: timeout waiting for atu to become ready\n");
730 }
731
732 static void ar8216_get_arl_entry(struct ar8xxx_priv *priv,
733 struct arl_entry *a, u32 *status, enum arl_op op)
734 {
735 struct mii_bus *bus = priv->mii_bus;
736 u16 r2, page;
737 u16 r1_func0, r1_func1, r1_func2;
738 u32 t, val0, val1, val2;
739 int i;
740
741 split_addr(AR8216_REG_ATU_FUNC0, &r1_func0, &r2, &page);
742 r2 |= 0x10;
743
744 r1_func1 = (AR8216_REG_ATU_FUNC1 >> 1) & 0x1e;
745 r1_func2 = (AR8216_REG_ATU_FUNC2 >> 1) & 0x1e;
746
747 switch (op) {
748 case AR8XXX_ARL_INITIALIZE:
749 /* all ATU registers are on the same page
750 * therefore set page only once
751 */
752 bus->write(bus, 0x18, 0, page);
753 wait_for_page_switch();
754
755 ar8216_wait_atu_ready(priv, r2, r1_func0);
756
757 ar8xxx_mii_write32(priv, r2, r1_func0, AR8216_ATU_OP_GET_NEXT);
758 ar8xxx_mii_write32(priv, r2, r1_func1, 0);
759 ar8xxx_mii_write32(priv, r2, r1_func2, 0);
760 break;
761 case AR8XXX_ARL_GET_NEXT:
762 t = ar8xxx_mii_read32(priv, r2, r1_func0);
763 t |= AR8216_ATU_ACTIVE;
764 ar8xxx_mii_write32(priv, r2, r1_func0, t);
765 ar8216_wait_atu_ready(priv, r2, r1_func0);
766
767 val0 = ar8xxx_mii_read32(priv, r2, r1_func0);
768 val1 = ar8xxx_mii_read32(priv, r2, r1_func1);
769 val2 = ar8xxx_mii_read32(priv, r2, r1_func2);
770
771 *status = (val2 & AR8216_ATU_STATUS) >> AR8216_ATU_STATUS_S;
772 if (!*status)
773 break;
774
775 i = 0;
776 t = AR8216_ATU_PORT0;
777 while (!(val2 & t) && ++i < priv->dev.ports)
778 t <<= 1;
779
780 a->port = i;
781 a->mac[0] = (val0 & AR8216_ATU_ADDR5) >> AR8216_ATU_ADDR5_S;
782 a->mac[1] = (val0 & AR8216_ATU_ADDR4) >> AR8216_ATU_ADDR4_S;
783 a->mac[2] = (val1 & AR8216_ATU_ADDR3) >> AR8216_ATU_ADDR3_S;
784 a->mac[3] = (val1 & AR8216_ATU_ADDR2) >> AR8216_ATU_ADDR2_S;
785 a->mac[4] = (val1 & AR8216_ATU_ADDR1) >> AR8216_ATU_ADDR1_S;
786 a->mac[5] = (val1 & AR8216_ATU_ADDR0) >> AR8216_ATU_ADDR0_S;
787 break;
788 }
789 }
790
791 static void
792 ar8236_setup_port(struct ar8xxx_priv *priv, int port, u32 members)
793 {
794 u32 egress, ingress;
795 u32 pvid;
796
797 if (priv->vlan) {
798 pvid = priv->vlan_id[priv->pvid[port]];
799 if (priv->vlan_tagged & (1 << port))
800 egress = AR8216_OUT_ADD_VLAN;
801 else
802 egress = AR8216_OUT_STRIP_VLAN;
803 ingress = AR8216_IN_SECURE;
804 } else {
805 pvid = port;
806 egress = AR8216_OUT_KEEP;
807 ingress = AR8216_IN_PORT_ONLY;
808 }
809
810 ar8xxx_rmw(priv, AR8216_REG_PORT_CTRL(port),
811 AR8216_PORT_CTRL_LEARN | AR8216_PORT_CTRL_VLAN_MODE |
812 AR8216_PORT_CTRL_SINGLE_VLAN | AR8216_PORT_CTRL_STATE |
813 AR8216_PORT_CTRL_HEADER | AR8216_PORT_CTRL_LEARN_LOCK,
814 AR8216_PORT_CTRL_LEARN |
815 (egress << AR8216_PORT_CTRL_VLAN_MODE_S) |
816 (AR8216_PORT_STATE_FORWARD << AR8216_PORT_CTRL_STATE_S));
817
818 ar8xxx_rmw(priv, AR8236_REG_PORT_VLAN(port),
819 AR8236_PORT_VLAN_DEFAULT_ID,
820 (pvid << AR8236_PORT_VLAN_DEFAULT_ID_S));
821
822 ar8xxx_rmw(priv, AR8236_REG_PORT_VLAN2(port),
823 AR8236_PORT_VLAN2_VLAN_MODE |
824 AR8236_PORT_VLAN2_MEMBER,
825 (ingress << AR8236_PORT_VLAN2_VLAN_MODE_S) |
826 (members << AR8236_PORT_VLAN2_MEMBER_S));
827 }
828
829 static void
830 ar8236_init_globals(struct ar8xxx_priv *priv)
831 {
832 /* enable jumbo frames */
833 ar8xxx_rmw(priv, AR8216_REG_GLOBAL_CTRL,
834 AR8316_GCTRL_MTU, 9018 + 8 + 2);
835
836 /* enable cpu port to receive arp frames */
837 ar8xxx_reg_set(priv, AR8216_REG_ATU_CTRL,
838 AR8236_ATU_CTRL_RES);
839
840 /* enable cpu port to receive multicast and broadcast frames */
841 ar8xxx_reg_set(priv, AR8216_REG_FLOOD_MASK,
842 AR8236_FM_CPU_BROADCAST_EN | AR8236_FM_CPU_BCAST_FWD_EN);
843
844 /* Enable MIB counters */
845 ar8xxx_rmw(priv, AR8216_REG_MIB_FUNC, AR8216_MIB_FUNC | AR8236_MIB_EN,
846 (AR8216_MIB_FUNC_NO_OP << AR8216_MIB_FUNC_S) |
847 AR8236_MIB_EN);
848 }
849
850 static int
851 ar8316_hw_init(struct ar8xxx_priv *priv)
852 {
853 u32 val, newval;
854
855 val = ar8xxx_read(priv, AR8316_REG_POSTRIP);
856
857 if (priv->phy->interface == PHY_INTERFACE_MODE_RGMII) {
858 if (priv->port4_phy) {
859 /* value taken from Ubiquiti RouterStation Pro */
860 newval = 0x81461bea;
861 pr_info("ar8316: Using port 4 as PHY\n");
862 } else {
863 newval = 0x01261be2;
864 pr_info("ar8316: Using port 4 as switch port\n");
865 }
866 } else if (priv->phy->interface == PHY_INTERFACE_MODE_GMII) {
867 /* value taken from AVM Fritz!Box 7390 sources */
868 newval = 0x010e5b71;
869 } else {
870 /* no known value for phy interface */
871 pr_err("ar8316: unsupported mii mode: %d.\n",
872 priv->phy->interface);
873 return -EINVAL;
874 }
875
876 if (val == newval)
877 goto out;
878
879 ar8xxx_write(priv, AR8316_REG_POSTRIP, newval);
880
881 if (priv->port4_phy &&
882 priv->phy->interface == PHY_INTERFACE_MODE_RGMII) {
883 /* work around for phy4 rgmii mode */
884 ar8xxx_phy_dbg_write(priv, 4, 0x12, 0x480c);
885 /* rx delay */
886 ar8xxx_phy_dbg_write(priv, 4, 0x0, 0x824e);
887 /* tx delay */
888 ar8xxx_phy_dbg_write(priv, 4, 0x5, 0x3d47);
889 msleep(1000);
890 }
891
892 ar8xxx_phy_init(priv);
893
894 out:
895 priv->initialized = true;
896 return 0;
897 }
898
899 static void
900 ar8316_init_globals(struct ar8xxx_priv *priv)
901 {
902 /* standard atheros magic */
903 ar8xxx_write(priv, 0x38, 0xc000050e);
904
905 /* enable cpu port to receive multicast and broadcast frames */
906 ar8xxx_write(priv, AR8216_REG_FLOOD_MASK, 0x003f003f);
907
908 /* enable jumbo frames */
909 ar8xxx_rmw(priv, AR8216_REG_GLOBAL_CTRL,
910 AR8316_GCTRL_MTU, 9018 + 8 + 2);
911
912 /* Enable MIB counters */
913 ar8xxx_rmw(priv, AR8216_REG_MIB_FUNC, AR8216_MIB_FUNC | AR8236_MIB_EN,
914 (AR8216_MIB_FUNC_NO_OP << AR8216_MIB_FUNC_S) |
915 AR8236_MIB_EN);
916 }
917
918 int
919 ar8xxx_sw_set_vlan(struct switch_dev *dev, const struct switch_attr *attr,
920 struct switch_val *val)
921 {
922 struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev);
923 priv->vlan = !!val->value.i;
924 return 0;
925 }
926
927 int
928 ar8xxx_sw_get_vlan(struct switch_dev *dev, const struct switch_attr *attr,
929 struct switch_val *val)
930 {
931 struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev);
932 val->value.i = priv->vlan;
933 return 0;
934 }
935
936
937 int
938 ar8xxx_sw_set_pvid(struct switch_dev *dev, int port, int vlan)
939 {
940 struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev);
941
942 /* make sure no invalid PVIDs get set */
943
944 if (vlan >= dev->vlans)
945 return -EINVAL;
946
947 priv->pvid[port] = vlan;
948 return 0;
949 }
950
951 int
952 ar8xxx_sw_get_pvid(struct switch_dev *dev, int port, int *vlan)
953 {
954 struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev);
955 *vlan = priv->pvid[port];
956 return 0;
957 }
958
959 static int
960 ar8xxx_sw_set_vid(struct switch_dev *dev, const struct switch_attr *attr,
961 struct switch_val *val)
962 {
963 struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev);
964 priv->vlan_id[val->port_vlan] = val->value.i;
965 return 0;
966 }
967
968 static int
969 ar8xxx_sw_get_vid(struct switch_dev *dev, const struct switch_attr *attr,
970 struct switch_val *val)
971 {
972 struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev);
973 val->value.i = priv->vlan_id[val->port_vlan];
974 return 0;
975 }
976
977 int
978 ar8xxx_sw_get_port_link(struct switch_dev *dev, int port,
979 struct switch_port_link *link)
980 {
981 struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev);
982
983 ar8216_read_port_link(priv, port, link);
984 return 0;
985 }
986
987 static int
988 ar8xxx_sw_get_ports(struct switch_dev *dev, struct switch_val *val)
989 {
990 struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev);
991 u8 ports = priv->vlan_table[val->port_vlan];
992 int i;
993
994 val->len = 0;
995 for (i = 0; i < dev->ports; i++) {
996 struct switch_port *p;
997
998 if (!(ports & (1 << i)))
999 continue;
1000
1001 p = &val->value.ports[val->len++];
1002 p->id = i;
1003 if (priv->vlan_tagged & (1 << i))
1004 p->flags = (1 << SWITCH_PORT_FLAG_TAGGED);
1005 else
1006 p->flags = 0;
1007 }
1008 return 0;
1009 }
1010
1011 static int
1012 ar8xxx_sw_set_ports(struct switch_dev *dev, struct switch_val *val)
1013 {
1014 struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev);
1015 u8 *vt = &priv->vlan_table[val->port_vlan];
1016 int i, j;
1017
1018 *vt = 0;
1019 for (i = 0; i < val->len; i++) {
1020 struct switch_port *p = &val->value.ports[i];
1021
1022 if (p->flags & (1 << SWITCH_PORT_FLAG_TAGGED)) {
1023 priv->vlan_tagged |= (1 << p->id);
1024 } else {
1025 priv->vlan_tagged &= ~(1 << p->id);
1026 priv->pvid[p->id] = val->port_vlan;
1027
1028 /* make sure that an untagged port does not
1029 * appear in other vlans */
1030 for (j = 0; j < AR8X16_MAX_VLANS; j++) {
1031 if (j == val->port_vlan)
1032 continue;
1033 priv->vlan_table[j] &= ~(1 << p->id);
1034 }
1035 }
1036
1037 *vt |= 1 << p->id;
1038 }
1039 return 0;
1040 }
1041
1042 static void
1043 ar8216_set_mirror_regs(struct ar8xxx_priv *priv)
1044 {
1045 int port;
1046
1047 /* reset all mirror registers */
1048 ar8xxx_rmw(priv, AR8216_REG_GLOBAL_CPUPORT,
1049 AR8216_GLOBAL_CPUPORT_MIRROR_PORT,
1050 (0xF << AR8216_GLOBAL_CPUPORT_MIRROR_PORT_S));
1051 for (port = 0; port < AR8216_NUM_PORTS; port++) {
1052 ar8xxx_reg_clear(priv, AR8216_REG_PORT_CTRL(port),
1053 AR8216_PORT_CTRL_MIRROR_RX);
1054
1055 ar8xxx_reg_clear(priv, AR8216_REG_PORT_CTRL(port),
1056 AR8216_PORT_CTRL_MIRROR_TX);
1057 }
1058
1059 /* now enable mirroring if necessary */
1060 if (priv->source_port >= AR8216_NUM_PORTS ||
1061 priv->monitor_port >= AR8216_NUM_PORTS ||
1062 priv->source_port == priv->monitor_port) {
1063 return;
1064 }
1065
1066 ar8xxx_rmw(priv, AR8216_REG_GLOBAL_CPUPORT,
1067 AR8216_GLOBAL_CPUPORT_MIRROR_PORT,
1068 (priv->monitor_port << AR8216_GLOBAL_CPUPORT_MIRROR_PORT_S));
1069
1070 if (priv->mirror_rx)
1071 ar8xxx_reg_set(priv, AR8216_REG_PORT_CTRL(priv->source_port),
1072 AR8216_PORT_CTRL_MIRROR_RX);
1073
1074 if (priv->mirror_tx)
1075 ar8xxx_reg_set(priv, AR8216_REG_PORT_CTRL(priv->source_port),
1076 AR8216_PORT_CTRL_MIRROR_TX);
1077 }
1078
1079 int
1080 ar8xxx_sw_hw_apply(struct switch_dev *dev)
1081 {
1082 struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev);
1083 u8 portmask[AR8X16_MAX_PORTS];
1084 int i, j;
1085
1086 mutex_lock(&priv->reg_mutex);
1087 /* flush all vlan translation unit entries */
1088 priv->chip->vtu_flush(priv);
1089
1090 memset(portmask, 0, sizeof(portmask));
1091 if (!priv->init) {
1092 /* calculate the port destination masks and load vlans
1093 * into the vlan translation unit */
1094 for (j = 0; j < AR8X16_MAX_VLANS; j++) {
1095 u8 vp = priv->vlan_table[j];
1096
1097 if (!vp)
1098 continue;
1099
1100 for (i = 0; i < dev->ports; i++) {
1101 u8 mask = (1 << i);
1102 if (vp & mask)
1103 portmask[i] |= vp & ~mask;
1104 }
1105
1106 priv->chip->vtu_load_vlan(priv, priv->vlan_id[j],
1107 priv->vlan_table[j]);
1108 }
1109 } else {
1110 /* vlan disabled:
1111 * isolate all ports, but connect them to the cpu port */
1112 for (i = 0; i < dev->ports; i++) {
1113 if (i == AR8216_PORT_CPU)
1114 continue;
1115
1116 portmask[i] = 1 << AR8216_PORT_CPU;
1117 portmask[AR8216_PORT_CPU] |= (1 << i);
1118 }
1119 }
1120
1121 /* update the port destination mask registers and tag settings */
1122 for (i = 0; i < dev->ports; i++) {
1123 priv->chip->setup_port(priv, i, portmask[i]);
1124 }
1125
1126 priv->chip->set_mirror_regs(priv);
1127
1128 mutex_unlock(&priv->reg_mutex);
1129 return 0;
1130 }
1131
1132 int
1133 ar8xxx_sw_reset_switch(struct switch_dev *dev)
1134 {
1135 struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev);
1136 const struct ar8xxx_chip *chip = priv->chip;
1137 int i;
1138
1139 mutex_lock(&priv->reg_mutex);
1140 memset(&priv->vlan, 0, sizeof(struct ar8xxx_priv) -
1141 offsetof(struct ar8xxx_priv, vlan));
1142
1143 for (i = 0; i < AR8X16_MAX_VLANS; i++)
1144 priv->vlan_id[i] = i;
1145
1146 /* Configure all ports */
1147 for (i = 0; i < dev->ports; i++)
1148 chip->init_port(priv, i);
1149
1150 priv->mirror_rx = false;
1151 priv->mirror_tx = false;
1152 priv->source_port = 0;
1153 priv->monitor_port = 0;
1154
1155 chip->init_globals(priv);
1156
1157 mutex_unlock(&priv->reg_mutex);
1158
1159 return chip->sw_hw_apply(dev);
1160 }
1161
1162 int
1163 ar8xxx_sw_set_reset_mibs(struct switch_dev *dev,
1164 const struct switch_attr *attr,
1165 struct switch_val *val)
1166 {
1167 struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev);
1168 unsigned int len;
1169 int ret;
1170
1171 if (!ar8xxx_has_mib_counters(priv))
1172 return -EOPNOTSUPP;
1173
1174 mutex_lock(&priv->mib_lock);
1175
1176 len = priv->dev.ports * priv->chip->num_mibs *
1177 sizeof(*priv->mib_stats);
1178 memset(priv->mib_stats, '\0', len);
1179 ret = ar8xxx_mib_flush(priv);
1180 if (ret)
1181 goto unlock;
1182
1183 ret = 0;
1184
1185 unlock:
1186 mutex_unlock(&priv->mib_lock);
1187 return ret;
1188 }
1189
1190 int
1191 ar8xxx_sw_set_mirror_rx_enable(struct switch_dev *dev,
1192 const struct switch_attr *attr,
1193 struct switch_val *val)
1194 {
1195 struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev);
1196
1197 mutex_lock(&priv->reg_mutex);
1198 priv->mirror_rx = !!val->value.i;
1199 priv->chip->set_mirror_regs(priv);
1200 mutex_unlock(&priv->reg_mutex);
1201
1202 return 0;
1203 }
1204
1205 int
1206 ar8xxx_sw_get_mirror_rx_enable(struct switch_dev *dev,
1207 const struct switch_attr *attr,
1208 struct switch_val *val)
1209 {
1210 struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev);
1211 val->value.i = priv->mirror_rx;
1212 return 0;
1213 }
1214
1215 int
1216 ar8xxx_sw_set_mirror_tx_enable(struct switch_dev *dev,
1217 const struct switch_attr *attr,
1218 struct switch_val *val)
1219 {
1220 struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev);
1221
1222 mutex_lock(&priv->reg_mutex);
1223 priv->mirror_tx = !!val->value.i;
1224 priv->chip->set_mirror_regs(priv);
1225 mutex_unlock(&priv->reg_mutex);
1226
1227 return 0;
1228 }
1229
1230 int
1231 ar8xxx_sw_get_mirror_tx_enable(struct switch_dev *dev,
1232 const struct switch_attr *attr,
1233 struct switch_val *val)
1234 {
1235 struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev);
1236 val->value.i = priv->mirror_tx;
1237 return 0;
1238 }
1239
1240 int
1241 ar8xxx_sw_set_mirror_monitor_port(struct switch_dev *dev,
1242 const struct switch_attr *attr,
1243 struct switch_val *val)
1244 {
1245 struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev);
1246
1247 mutex_lock(&priv->reg_mutex);
1248 priv->monitor_port = val->value.i;
1249 priv->chip->set_mirror_regs(priv);
1250 mutex_unlock(&priv->reg_mutex);
1251
1252 return 0;
1253 }
1254
1255 int
1256 ar8xxx_sw_get_mirror_monitor_port(struct switch_dev *dev,
1257 const struct switch_attr *attr,
1258 struct switch_val *val)
1259 {
1260 struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev);
1261 val->value.i = priv->monitor_port;
1262 return 0;
1263 }
1264
1265 int
1266 ar8xxx_sw_set_mirror_source_port(struct switch_dev *dev,
1267 const struct switch_attr *attr,
1268 struct switch_val *val)
1269 {
1270 struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev);
1271
1272 mutex_lock(&priv->reg_mutex);
1273 priv->source_port = val->value.i;
1274 priv->chip->set_mirror_regs(priv);
1275 mutex_unlock(&priv->reg_mutex);
1276
1277 return 0;
1278 }
1279
1280 int
1281 ar8xxx_sw_get_mirror_source_port(struct switch_dev *dev,
1282 const struct switch_attr *attr,
1283 struct switch_val *val)
1284 {
1285 struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev);
1286 val->value.i = priv->source_port;
1287 return 0;
1288 }
1289
1290 int
1291 ar8xxx_sw_set_port_reset_mib(struct switch_dev *dev,
1292 const struct switch_attr *attr,
1293 struct switch_val *val)
1294 {
1295 struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev);
1296 int port;
1297 int ret;
1298
1299 if (!ar8xxx_has_mib_counters(priv))
1300 return -EOPNOTSUPP;
1301
1302 port = val->port_vlan;
1303 if (port >= dev->ports)
1304 return -EINVAL;
1305
1306 mutex_lock(&priv->mib_lock);
1307 ret = ar8xxx_mib_capture(priv);
1308 if (ret)
1309 goto unlock;
1310
1311 ar8xxx_mib_fetch_port_stat(priv, port, true);
1312
1313 ret = 0;
1314
1315 unlock:
1316 mutex_unlock(&priv->mib_lock);
1317 return ret;
1318 }
1319
1320 int
1321 ar8xxx_sw_get_port_mib(struct switch_dev *dev,
1322 const struct switch_attr *attr,
1323 struct switch_val *val)
1324 {
1325 struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev);
1326 const struct ar8xxx_chip *chip = priv->chip;
1327 u64 *mib_stats;
1328 int port;
1329 int ret;
1330 char *buf = priv->buf;
1331 int i, len = 0;
1332
1333 if (!ar8xxx_has_mib_counters(priv))
1334 return -EOPNOTSUPP;
1335
1336 port = val->port_vlan;
1337 if (port >= dev->ports)
1338 return -EINVAL;
1339
1340 mutex_lock(&priv->mib_lock);
1341 ret = ar8xxx_mib_capture(priv);
1342 if (ret)
1343 goto unlock;
1344
1345 ar8xxx_mib_fetch_port_stat(priv, port, false);
1346
1347 len += snprintf(buf + len, sizeof(priv->buf) - len,
1348 "Port %d MIB counters\n",
1349 port);
1350
1351 mib_stats = &priv->mib_stats[port * chip->num_mibs];
1352 for (i = 0; i < chip->num_mibs; i++)
1353 len += snprintf(buf + len, sizeof(priv->buf) - len,
1354 "%-12s: %llu\n",
1355 chip->mib_decs[i].name,
1356 mib_stats[i]);
1357
1358 val->value.s = buf;
1359 val->len = len;
1360
1361 ret = 0;
1362
1363 unlock:
1364 mutex_unlock(&priv->mib_lock);
1365 return ret;
1366 }
1367
1368 int
1369 ar8xxx_sw_get_arl_table(struct switch_dev *dev,
1370 const struct switch_attr *attr,
1371 struct switch_val *val)
1372 {
1373 struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev);
1374 struct mii_bus *bus = priv->mii_bus;
1375 const struct ar8xxx_chip *chip = priv->chip;
1376 char *buf = priv->arl_buf;
1377 int i, j, k, len = 0;
1378 struct arl_entry *a, *a1;
1379 u32 status;
1380
1381 if (!chip->get_arl_entry)
1382 return -EOPNOTSUPP;
1383
1384 mutex_lock(&priv->reg_mutex);
1385 mutex_lock(&bus->mdio_lock);
1386
1387 chip->get_arl_entry(priv, NULL, NULL, AR8XXX_ARL_INITIALIZE);
1388
1389 for(i = 0; i < AR8XXX_NUM_ARL_RECORDS; ++i) {
1390 a = &priv->arl_table[i];
1391 duplicate:
1392 chip->get_arl_entry(priv, a, &status, AR8XXX_ARL_GET_NEXT);
1393
1394 if (!status)
1395 break;
1396
1397 /* avoid duplicates
1398 * ARL table can include multiple valid entries
1399 * per MAC, just with differing status codes
1400 */
1401 for (j = 0; j < i; ++j) {
1402 a1 = &priv->arl_table[j];
1403 if (a->port == a1->port && !memcmp(a->mac, a1->mac, sizeof(a->mac)))
1404 goto duplicate;
1405 }
1406 }
1407
1408 mutex_unlock(&bus->mdio_lock);
1409
1410 len += snprintf(buf + len, sizeof(priv->arl_buf) - len,
1411 "address resolution table\n");
1412
1413 if (i == AR8XXX_NUM_ARL_RECORDS)
1414 len += snprintf(buf + len, sizeof(priv->arl_buf) - len,
1415 "Too many entries found, displaying the first %d only!\n",
1416 AR8XXX_NUM_ARL_RECORDS);
1417
1418 for (j = 0; j < priv->dev.ports; ++j) {
1419 for (k = 0; k < i; ++k) {
1420 a = &priv->arl_table[k];
1421 if (a->port != j)
1422 continue;
1423 len += snprintf(buf + len, sizeof(priv->arl_buf) - len,
1424 "Port %d: MAC %02x:%02x:%02x:%02x:%02x:%02x\n",
1425 j,
1426 a->mac[5], a->mac[4], a->mac[3],
1427 a->mac[2], a->mac[1], a->mac[0]);
1428 }
1429 }
1430
1431 val->value.s = buf;
1432 val->len = len;
1433
1434 mutex_unlock(&priv->reg_mutex);
1435
1436 return 0;
1437 }
1438
1439 int
1440 ar8xxx_sw_set_flush_arl_table(struct switch_dev *dev,
1441 const struct switch_attr *attr,
1442 struct switch_val *val)
1443 {
1444 struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev);
1445 int ret;
1446
1447 mutex_lock(&priv->reg_mutex);
1448 ret = priv->chip->atu_flush(priv);
1449 mutex_unlock(&priv->reg_mutex);
1450
1451 return ret;
1452 }
1453
1454 int
1455 ar8xxx_sw_set_flush_port_arl_table(struct switch_dev *dev,
1456 const struct switch_attr *attr,
1457 struct switch_val *val)
1458 {
1459 struct ar8xxx_priv *priv = swdev_to_ar8xxx(dev);
1460 int port, ret;
1461
1462 port = val->port_vlan;
1463 if (port >= dev->ports)
1464 return -EINVAL;
1465
1466 mutex_lock(&priv->reg_mutex);
1467 ret = priv->chip->atu_flush_port(priv, port);
1468 mutex_unlock(&priv->reg_mutex);
1469
1470 return ret;
1471 }
1472
1473 static const struct switch_attr ar8xxx_sw_attr_globals[] = {
1474 {
1475 .type = SWITCH_TYPE_INT,
1476 .name = "enable_vlan",
1477 .description = "Enable VLAN mode",
1478 .set = ar8xxx_sw_set_vlan,
1479 .get = ar8xxx_sw_get_vlan,
1480 .max = 1
1481 },
1482 {
1483 .type = SWITCH_TYPE_NOVAL,
1484 .name = "reset_mibs",
1485 .description = "Reset all MIB counters",
1486 .set = ar8xxx_sw_set_reset_mibs,
1487 },
1488 {
1489 .type = SWITCH_TYPE_INT,
1490 .name = "enable_mirror_rx",
1491 .description = "Enable mirroring of RX packets",
1492 .set = ar8xxx_sw_set_mirror_rx_enable,
1493 .get = ar8xxx_sw_get_mirror_rx_enable,
1494 .max = 1
1495 },
1496 {
1497 .type = SWITCH_TYPE_INT,
1498 .name = "enable_mirror_tx",
1499 .description = "Enable mirroring of TX packets",
1500 .set = ar8xxx_sw_set_mirror_tx_enable,
1501 .get = ar8xxx_sw_get_mirror_tx_enable,
1502 .max = 1
1503 },
1504 {
1505 .type = SWITCH_TYPE_INT,
1506 .name = "mirror_monitor_port",
1507 .description = "Mirror monitor port",
1508 .set = ar8xxx_sw_set_mirror_monitor_port,
1509 .get = ar8xxx_sw_get_mirror_monitor_port,
1510 .max = AR8216_NUM_PORTS - 1
1511 },
1512 {
1513 .type = SWITCH_TYPE_INT,
1514 .name = "mirror_source_port",
1515 .description = "Mirror source port",
1516 .set = ar8xxx_sw_set_mirror_source_port,
1517 .get = ar8xxx_sw_get_mirror_source_port,
1518 .max = AR8216_NUM_PORTS - 1
1519 },
1520 {
1521 .type = SWITCH_TYPE_STRING,
1522 .name = "arl_table",
1523 .description = "Get ARL table",
1524 .set = NULL,
1525 .get = ar8xxx_sw_get_arl_table,
1526 },
1527 {
1528 .type = SWITCH_TYPE_NOVAL,
1529 .name = "flush_arl_table",
1530 .description = "Flush ARL table",
1531 .set = ar8xxx_sw_set_flush_arl_table,
1532 },
1533 };
1534
1535 const struct switch_attr ar8xxx_sw_attr_port[] = {
1536 {
1537 .type = SWITCH_TYPE_NOVAL,
1538 .name = "reset_mib",
1539 .description = "Reset single port MIB counters",
1540 .set = ar8xxx_sw_set_port_reset_mib,
1541 },
1542 {
1543 .type = SWITCH_TYPE_STRING,
1544 .name = "mib",
1545 .description = "Get port's MIB counters",
1546 .set = NULL,
1547 .get = ar8xxx_sw_get_port_mib,
1548 },
1549 {
1550 .type = SWITCH_TYPE_NOVAL,
1551 .name = "flush_arl_table",
1552 .description = "Flush port's ARL table entries",
1553 .set = ar8xxx_sw_set_flush_port_arl_table,
1554 },
1555 };
1556
1557 const struct switch_attr ar8xxx_sw_attr_vlan[1] = {
1558 {
1559 .type = SWITCH_TYPE_INT,
1560 .name = "vid",
1561 .description = "VLAN ID (0-4094)",
1562 .set = ar8xxx_sw_set_vid,
1563 .get = ar8xxx_sw_get_vid,
1564 .max = 4094,
1565 },
1566 };
1567
1568 static const struct switch_dev_ops ar8xxx_sw_ops = {
1569 .attr_global = {
1570 .attr = ar8xxx_sw_attr_globals,
1571 .n_attr = ARRAY_SIZE(ar8xxx_sw_attr_globals),
1572 },
1573 .attr_port = {
1574 .attr = ar8xxx_sw_attr_port,
1575 .n_attr = ARRAY_SIZE(ar8xxx_sw_attr_port),
1576 },
1577 .attr_vlan = {
1578 .attr = ar8xxx_sw_attr_vlan,
1579 .n_attr = ARRAY_SIZE(ar8xxx_sw_attr_vlan),
1580 },
1581 .get_port_pvid = ar8xxx_sw_get_pvid,
1582 .set_port_pvid = ar8xxx_sw_set_pvid,
1583 .get_vlan_ports = ar8xxx_sw_get_ports,
1584 .set_vlan_ports = ar8xxx_sw_set_ports,
1585 .apply_config = ar8xxx_sw_hw_apply,
1586 .reset_switch = ar8xxx_sw_reset_switch,
1587 .get_port_link = ar8xxx_sw_get_port_link,
1588 };
1589
1590 static const struct ar8xxx_chip ar8216_chip = {
1591 .caps = AR8XXX_CAP_MIB_COUNTERS,
1592
1593 .reg_port_stats_start = 0x19000,
1594 .reg_port_stats_length = 0xa0,
1595
1596 .name = "Atheros AR8216",
1597 .ports = AR8216_NUM_PORTS,
1598 .vlans = AR8216_NUM_VLANS,
1599 .swops = &ar8xxx_sw_ops,
1600
1601 .hw_init = ar8216_hw_init,
1602 .init_globals = ar8216_init_globals,
1603 .init_port = ar8216_init_port,
1604 .setup_port = ar8216_setup_port,
1605 .read_port_status = ar8216_read_port_status,
1606 .atu_flush = ar8216_atu_flush,
1607 .atu_flush_port = ar8216_atu_flush_port,
1608 .vtu_flush = ar8216_vtu_flush,
1609 .vtu_load_vlan = ar8216_vtu_load_vlan,
1610 .set_mirror_regs = ar8216_set_mirror_regs,
1611 .get_arl_entry = ar8216_get_arl_entry,
1612 .sw_hw_apply = ar8xxx_sw_hw_apply,
1613
1614 .num_mibs = ARRAY_SIZE(ar8216_mibs),
1615 .mib_decs = ar8216_mibs,
1616 .mib_func = AR8216_REG_MIB_FUNC
1617 };
1618
1619 static const struct ar8xxx_chip ar8236_chip = {
1620 .caps = AR8XXX_CAP_MIB_COUNTERS,
1621
1622 .reg_port_stats_start = 0x20000,
1623 .reg_port_stats_length = 0x100,
1624
1625 .name = "Atheros AR8236",
1626 .ports = AR8216_NUM_PORTS,
1627 .vlans = AR8216_NUM_VLANS,
1628 .swops = &ar8xxx_sw_ops,
1629
1630 .hw_init = ar8216_hw_init,
1631 .init_globals = ar8236_init_globals,
1632 .init_port = ar8216_init_port,
1633 .setup_port = ar8236_setup_port,
1634 .read_port_status = ar8216_read_port_status,
1635 .atu_flush = ar8216_atu_flush,
1636 .atu_flush_port = ar8216_atu_flush_port,
1637 .vtu_flush = ar8216_vtu_flush,
1638 .vtu_load_vlan = ar8216_vtu_load_vlan,
1639 .set_mirror_regs = ar8216_set_mirror_regs,
1640 .get_arl_entry = ar8216_get_arl_entry,
1641 .sw_hw_apply = ar8xxx_sw_hw_apply,
1642
1643 .num_mibs = ARRAY_SIZE(ar8236_mibs),
1644 .mib_decs = ar8236_mibs,
1645 .mib_func = AR8216_REG_MIB_FUNC
1646 };
1647
1648 static const struct ar8xxx_chip ar8316_chip = {
1649 .caps = AR8XXX_CAP_GIGE | AR8XXX_CAP_MIB_COUNTERS,
1650
1651 .reg_port_stats_start = 0x20000,
1652 .reg_port_stats_length = 0x100,
1653
1654 .name = "Atheros AR8316",
1655 .ports = AR8216_NUM_PORTS,
1656 .vlans = AR8X16_MAX_VLANS,
1657 .swops = &ar8xxx_sw_ops,
1658
1659 .hw_init = ar8316_hw_init,
1660 .init_globals = ar8316_init_globals,
1661 .init_port = ar8216_init_port,
1662 .setup_port = ar8216_setup_port,
1663 .read_port_status = ar8216_read_port_status,
1664 .atu_flush = ar8216_atu_flush,
1665 .atu_flush_port = ar8216_atu_flush_port,
1666 .vtu_flush = ar8216_vtu_flush,
1667 .vtu_load_vlan = ar8216_vtu_load_vlan,
1668 .set_mirror_regs = ar8216_set_mirror_regs,
1669 .get_arl_entry = ar8216_get_arl_entry,
1670 .sw_hw_apply = ar8xxx_sw_hw_apply,
1671
1672 .num_mibs = ARRAY_SIZE(ar8236_mibs),
1673 .mib_decs = ar8236_mibs,
1674 .mib_func = AR8216_REG_MIB_FUNC
1675 };
1676
1677 static int
1678 ar8xxx_id_chip(struct ar8xxx_priv *priv)
1679 {
1680 u32 val;
1681 u16 id;
1682 int i;
1683
1684 val = ar8xxx_read(priv, AR8216_REG_CTRL);
1685 if (val == ~0)
1686 return -ENODEV;
1687
1688 id = val & (AR8216_CTRL_REVISION | AR8216_CTRL_VERSION);
1689 for (i = 0; i < AR8X16_PROBE_RETRIES; i++) {
1690 u16 t;
1691
1692 val = ar8xxx_read(priv, AR8216_REG_CTRL);
1693 if (val == ~0)
1694 return -ENODEV;
1695
1696 t = val & (AR8216_CTRL_REVISION | AR8216_CTRL_VERSION);
1697 if (t != id)
1698 return -ENODEV;
1699 }
1700
1701 priv->chip_ver = (id & AR8216_CTRL_VERSION) >> AR8216_CTRL_VERSION_S;
1702 priv->chip_rev = (id & AR8216_CTRL_REVISION);
1703
1704 switch (priv->chip_ver) {
1705 case AR8XXX_VER_AR8216:
1706 priv->chip = &ar8216_chip;
1707 break;
1708 case AR8XXX_VER_AR8236:
1709 priv->chip = &ar8236_chip;
1710 break;
1711 case AR8XXX_VER_AR8316:
1712 priv->chip = &ar8316_chip;
1713 break;
1714 case AR8XXX_VER_AR8327:
1715 priv->chip = &ar8327_chip;
1716 break;
1717 case AR8XXX_VER_AR8337:
1718 priv->chip = &ar8337_chip;
1719 break;
1720 default:
1721 pr_err("ar8216: Unknown Atheros device [ver=%d, rev=%d]\n",
1722 priv->chip_ver, priv->chip_rev);
1723
1724 return -ENODEV;
1725 }
1726
1727 return 0;
1728 }
1729
1730 static void
1731 ar8xxx_mib_work_func(struct work_struct *work)
1732 {
1733 struct ar8xxx_priv *priv;
1734 int err;
1735
1736 priv = container_of(work, struct ar8xxx_priv, mib_work.work);
1737
1738 mutex_lock(&priv->mib_lock);
1739
1740 err = ar8xxx_mib_capture(priv);
1741 if (err)
1742 goto next_port;
1743
1744 ar8xxx_mib_fetch_port_stat(priv, priv->mib_next_port, false);
1745
1746 next_port:
1747 priv->mib_next_port++;
1748 if (priv->mib_next_port >= priv->dev.ports)
1749 priv->mib_next_port = 0;
1750
1751 mutex_unlock(&priv->mib_lock);
1752 schedule_delayed_work(&priv->mib_work,
1753 msecs_to_jiffies(AR8XXX_MIB_WORK_DELAY));
1754 }
1755
1756 static int
1757 ar8xxx_mib_init(struct ar8xxx_priv *priv)
1758 {
1759 unsigned int len;
1760
1761 if (!ar8xxx_has_mib_counters(priv))
1762 return 0;
1763
1764 BUG_ON(!priv->chip->mib_decs || !priv->chip->num_mibs);
1765
1766 len = priv->dev.ports * priv->chip->num_mibs *
1767 sizeof(*priv->mib_stats);
1768 priv->mib_stats = kzalloc(len, GFP_KERNEL);
1769
1770 if (!priv->mib_stats)
1771 return -ENOMEM;
1772
1773 return 0;
1774 }
1775
1776 static void
1777 ar8xxx_mib_start(struct ar8xxx_priv *priv)
1778 {
1779 if (!ar8xxx_has_mib_counters(priv))
1780 return;
1781
1782 schedule_delayed_work(&priv->mib_work,
1783 msecs_to_jiffies(AR8XXX_MIB_WORK_DELAY));
1784 }
1785
1786 static void
1787 ar8xxx_mib_stop(struct ar8xxx_priv *priv)
1788 {
1789 if (!ar8xxx_has_mib_counters(priv))
1790 return;
1791
1792 cancel_delayed_work(&priv->mib_work);
1793 }
1794
1795 static struct ar8xxx_priv *
1796 ar8xxx_create(void)
1797 {
1798 struct ar8xxx_priv *priv;
1799
1800 priv = kzalloc(sizeof(struct ar8xxx_priv), GFP_KERNEL);
1801 if (priv == NULL)
1802 return NULL;
1803
1804 mutex_init(&priv->reg_mutex);
1805 mutex_init(&priv->mib_lock);
1806 INIT_DELAYED_WORK(&priv->mib_work, ar8xxx_mib_work_func);
1807
1808 return priv;
1809 }
1810
1811 static void
1812 ar8xxx_free(struct ar8xxx_priv *priv)
1813 {
1814 if (priv->chip && priv->chip->cleanup)
1815 priv->chip->cleanup(priv);
1816
1817 kfree(priv->chip_data);
1818 kfree(priv->mib_stats);
1819 kfree(priv);
1820 }
1821
1822 static int
1823 ar8xxx_probe_switch(struct ar8xxx_priv *priv)
1824 {
1825 const struct ar8xxx_chip *chip;
1826 struct switch_dev *swdev;
1827 int ret;
1828
1829 ret = ar8xxx_id_chip(priv);
1830 if (ret)
1831 return ret;
1832
1833 chip = priv->chip;
1834
1835 swdev = &priv->dev;
1836 swdev->cpu_port = AR8216_PORT_CPU;
1837 swdev->name = chip->name;
1838 swdev->vlans = chip->vlans;
1839 swdev->ports = chip->ports;
1840 swdev->ops = chip->swops;
1841
1842 ret = ar8xxx_mib_init(priv);
1843 if (ret)
1844 return ret;
1845
1846 return 0;
1847 }
1848
1849 static int
1850 ar8xxx_start(struct ar8xxx_priv *priv)
1851 {
1852 int ret;
1853
1854 priv->init = true;
1855
1856 ret = priv->chip->hw_init(priv);
1857 if (ret)
1858 return ret;
1859
1860 ret = ar8xxx_sw_reset_switch(&priv->dev);
1861 if (ret)
1862 return ret;
1863
1864 priv->init = false;
1865
1866 ar8xxx_mib_start(priv);
1867
1868 return 0;
1869 }
1870
1871 static int
1872 ar8xxx_phy_config_init(struct phy_device *phydev)
1873 {
1874 struct ar8xxx_priv *priv = phydev->priv;
1875 struct net_device *dev = phydev->attached_dev;
1876 int ret;
1877
1878 if (WARN_ON(!priv))
1879 return -ENODEV;
1880
1881 if (priv->chip->config_at_probe)
1882 return ar8xxx_phy_check_aneg(phydev);
1883
1884 priv->phy = phydev;
1885
1886 if (phydev->addr != 0) {
1887 if (chip_is_ar8316(priv)) {
1888 /* switch device has been initialized, reinit */
1889 priv->dev.ports = (AR8216_NUM_PORTS - 1);
1890 priv->initialized = false;
1891 priv->port4_phy = true;
1892 ar8316_hw_init(priv);
1893 return 0;
1894 }
1895
1896 return 0;
1897 }
1898
1899 ret = ar8xxx_start(priv);
1900 if (ret)
1901 return ret;
1902
1903 /* VID fixup only needed on ar8216 */
1904 if (chip_is_ar8216(priv)) {
1905 dev->phy_ptr = priv;
1906 dev->priv_flags |= IFF_NO_IP_ALIGN;
1907 dev->eth_mangle_rx = ar8216_mangle_rx;
1908 dev->eth_mangle_tx = ar8216_mangle_tx;
1909 }
1910
1911 return 0;
1912 }
1913
1914 static bool
1915 ar8xxx_check_link_states(struct ar8xxx_priv *priv)
1916 {
1917 bool link_new, changed = false;
1918 u32 status;
1919 int i;
1920
1921 mutex_lock(&priv->reg_mutex);
1922
1923 for (i = 0; i < priv->dev.ports; i++) {
1924 status = priv->chip->read_port_status(priv, i);
1925 link_new = !!(status & AR8216_PORT_STATUS_LINK_UP);
1926 if (link_new == priv->link_up[i])
1927 continue;
1928
1929 priv->link_up[i] = link_new;
1930 changed = true;
1931 /* flush ARL entries for this port if it went down*/
1932 if (!link_new)
1933 priv->chip->atu_flush_port(priv, i);
1934 dev_info(&priv->phy->dev, "Port %d is %s\n",
1935 i, link_new ? "up" : "down");
1936 }
1937
1938 mutex_unlock(&priv->reg_mutex);
1939
1940 return changed;
1941 }
1942
1943 static int
1944 ar8xxx_phy_read_status(struct phy_device *phydev)
1945 {
1946 struct ar8xxx_priv *priv = phydev->priv;
1947 struct switch_port_link link;
1948
1949 /* check for switch port link changes */
1950 if (phydev->state == PHY_CHANGELINK)
1951 ar8xxx_check_link_states(priv);
1952
1953 if (phydev->addr != 0)
1954 return genphy_read_status(phydev);
1955
1956 ar8216_read_port_link(priv, phydev->addr, &link);
1957 phydev->link = !!link.link;
1958 if (!phydev->link)
1959 return 0;
1960
1961 switch (link.speed) {
1962 case SWITCH_PORT_SPEED_10:
1963 phydev->speed = SPEED_10;
1964 break;
1965 case SWITCH_PORT_SPEED_100:
1966 phydev->speed = SPEED_100;
1967 break;
1968 case SWITCH_PORT_SPEED_1000:
1969 phydev->speed = SPEED_1000;
1970 break;
1971 default:
1972 phydev->speed = 0;
1973 }
1974 phydev->duplex = link.duplex ? DUPLEX_FULL : DUPLEX_HALF;
1975
1976 phydev->state = PHY_RUNNING;
1977 netif_carrier_on(phydev->attached_dev);
1978 phydev->adjust_link(phydev->attached_dev);
1979
1980 return 0;
1981 }
1982
1983 static int
1984 ar8xxx_phy_config_aneg(struct phy_device *phydev)
1985 {
1986 if (phydev->addr == 0)
1987 return 0;
1988
1989 return genphy_config_aneg(phydev);
1990 }
1991
1992 static const u32 ar8xxx_phy_ids[] = {
1993 0x004dd033,
1994 0x004dd034, /* AR8327 */
1995 0x004dd036, /* AR8337 */
1996 0x004dd041,
1997 0x004dd042,
1998 0x004dd043, /* AR8236 */
1999 };
2000
2001 static bool
2002 ar8xxx_phy_match(u32 phy_id)
2003 {
2004 int i;
2005
2006 for (i = 0; i < ARRAY_SIZE(ar8xxx_phy_ids); i++)
2007 if (phy_id == ar8xxx_phy_ids[i])
2008 return true;
2009
2010 return false;
2011 }
2012
2013 static bool
2014 ar8xxx_is_possible(struct mii_bus *bus)
2015 {
2016 unsigned i;
2017
2018 for (i = 0; i < 4; i++) {
2019 u32 phy_id;
2020
2021 phy_id = mdiobus_read(bus, i, MII_PHYSID1) << 16;
2022 phy_id |= mdiobus_read(bus, i, MII_PHYSID2);
2023 if (!ar8xxx_phy_match(phy_id)) {
2024 pr_debug("ar8xxx: unknown PHY at %s:%02x id:%08x\n",
2025 dev_name(&bus->dev), i, phy_id);
2026 return false;
2027 }
2028 }
2029
2030 return true;
2031 }
2032
2033 static int
2034 ar8xxx_phy_probe(struct phy_device *phydev)
2035 {
2036 struct ar8xxx_priv *priv;
2037 struct switch_dev *swdev;
2038 int ret;
2039
2040 /* skip PHYs at unused adresses */
2041 if (phydev->addr != 0 && phydev->addr != 4)
2042 return -ENODEV;
2043
2044 if (!ar8xxx_is_possible(phydev->bus))
2045 return -ENODEV;
2046
2047 mutex_lock(&ar8xxx_dev_list_lock);
2048 list_for_each_entry(priv, &ar8xxx_dev_list, list)
2049 if (priv->mii_bus == phydev->bus)
2050 goto found;
2051
2052 priv = ar8xxx_create();
2053 if (priv == NULL) {
2054 ret = -ENOMEM;
2055 goto unlock;
2056 }
2057
2058 priv->mii_bus = phydev->bus;
2059
2060 ret = ar8xxx_probe_switch(priv);
2061 if (ret)
2062 goto free_priv;
2063
2064 swdev = &priv->dev;
2065 swdev->alias = dev_name(&priv->mii_bus->dev);
2066 ret = register_switch(swdev, NULL);
2067 if (ret)
2068 goto free_priv;
2069
2070 pr_info("%s: %s rev. %u switch registered on %s\n",
2071 swdev->devname, swdev->name, priv->chip_rev,
2072 dev_name(&priv->mii_bus->dev));
2073
2074 found:
2075 priv->use_count++;
2076
2077 if (phydev->addr == 0) {
2078 if (ar8xxx_has_gige(priv)) {
2079 phydev->supported = SUPPORTED_1000baseT_Full;
2080 phydev->advertising = ADVERTISED_1000baseT_Full;
2081 } else {
2082 phydev->supported = SUPPORTED_100baseT_Full;
2083 phydev->advertising = ADVERTISED_100baseT_Full;
2084 }
2085
2086 if (priv->chip->config_at_probe) {
2087 priv->phy = phydev;
2088
2089 ret = ar8xxx_start(priv);
2090 if (ret)
2091 goto err_unregister_switch;
2092 }
2093 } else {
2094 if (ar8xxx_has_gige(priv)) {
2095 phydev->supported |= SUPPORTED_1000baseT_Full;
2096 phydev->advertising |= ADVERTISED_1000baseT_Full;
2097 }
2098 }
2099
2100 phydev->priv = priv;
2101
2102 list_add(&priv->list, &ar8xxx_dev_list);
2103
2104 mutex_unlock(&ar8xxx_dev_list_lock);
2105
2106 return 0;
2107
2108 err_unregister_switch:
2109 if (--priv->use_count)
2110 goto unlock;
2111
2112 unregister_switch(&priv->dev);
2113
2114 free_priv:
2115 ar8xxx_free(priv);
2116 unlock:
2117 mutex_unlock(&ar8xxx_dev_list_lock);
2118 return ret;
2119 }
2120
2121 static void
2122 ar8xxx_phy_detach(struct phy_device *phydev)
2123 {
2124 struct net_device *dev = phydev->attached_dev;
2125
2126 if (!dev)
2127 return;
2128
2129 dev->phy_ptr = NULL;
2130 dev->priv_flags &= ~IFF_NO_IP_ALIGN;
2131 dev->eth_mangle_rx = NULL;
2132 dev->eth_mangle_tx = NULL;
2133 }
2134
2135 static void
2136 ar8xxx_phy_remove(struct phy_device *phydev)
2137 {
2138 struct ar8xxx_priv *priv = phydev->priv;
2139
2140 if (WARN_ON(!priv))
2141 return;
2142
2143 phydev->priv = NULL;
2144 if (--priv->use_count > 0)
2145 return;
2146
2147 mutex_lock(&ar8xxx_dev_list_lock);
2148 list_del(&priv->list);
2149 mutex_unlock(&ar8xxx_dev_list_lock);
2150
2151 unregister_switch(&priv->dev);
2152 ar8xxx_mib_stop(priv);
2153 ar8xxx_free(priv);
2154 }
2155
2156 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)
2157 static int
2158 ar8xxx_phy_soft_reset(struct phy_device *phydev)
2159 {
2160 /* we don't need an extra reset */
2161 return 0;
2162 }
2163 #endif
2164
2165 static struct phy_driver ar8xxx_phy_driver = {
2166 .phy_id = 0x004d0000,
2167 .name = "Atheros AR8216/AR8236/AR8316",
2168 .phy_id_mask = 0xffff0000,
2169 .features = PHY_BASIC_FEATURES,
2170 .probe = ar8xxx_phy_probe,
2171 .remove = ar8xxx_phy_remove,
2172 .detach = ar8xxx_phy_detach,
2173 .config_init = ar8xxx_phy_config_init,
2174 .config_aneg = ar8xxx_phy_config_aneg,
2175 .read_status = ar8xxx_phy_read_status,
2176 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,0)
2177 .soft_reset = ar8xxx_phy_soft_reset,
2178 #endif
2179 .driver = { .owner = THIS_MODULE },
2180 };
2181
2182 int __init
2183 ar8xxx_init(void)
2184 {
2185 return phy_driver_register(&ar8xxx_phy_driver);
2186 }
2187
2188 void __exit
2189 ar8xxx_exit(void)
2190 {
2191 phy_driver_unregister(&ar8xxx_phy_driver);
2192 }
2193
2194 module_init(ar8xxx_init);
2195 module_exit(ar8xxx_exit);
2196 MODULE_LICENSE("GPL");
2197
OpenWrt Source Repository