[generic] unify extended vlan id swconfig attributes.
[openwrt/svn-archive/archive.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 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 */
16
17 #include <linux/if.h>
18 #include <linux/module.h>
19 #include <linux/init.h>
20 #include <linux/list.h>
21 #include <linux/if_ether.h>
22 #include <linux/skbuff.h>
23 #include <linux/netdevice.h>
24 #include <linux/netlink.h>
25 #include <linux/bitops.h>
26 #include <net/genetlink.h>
27 #include <linux/switch.h>
28 #include <linux/delay.h>
29 #include <linux/phy.h>
30 #include <linux/netdevice.h>
31 #include <linux/etherdevice.h>
32 #include "ar8216.h"
33
34 /* size of the vlan table */
35 #define AR8X16_MAX_VLANS 128
36 #define AR8X16_PROBE_RETRIES 10
37
38 struct ar8216_priv {
39 struct switch_dev dev;
40 struct phy_device *phy;
41 u32 (*read)(struct ar8216_priv *priv, int reg);
42 void (*write)(struct ar8216_priv *priv, int reg, u32 val);
43 const struct net_device_ops *ndo_old;
44 struct net_device_ops ndo;
45 struct mutex reg_mutex;
46 int chip;
47
48 /* all fields below are cleared on reset */
49 bool vlan;
50 u16 vlan_id[AR8X16_MAX_VLANS];
51 u8 vlan_table[AR8X16_MAX_VLANS];
52 u8 vlan_tagged;
53 u16 pvid[AR8216_NUM_PORTS];
54 };
55
56 #define to_ar8216(_dev) container_of(_dev, struct ar8216_priv, dev)
57
58 static inline void
59 split_addr(u32 regaddr, u16 *r1, u16 *r2, u16 *page)
60 {
61 regaddr >>= 1;
62 *r1 = regaddr & 0x1e;
63
64 regaddr >>= 5;
65 *r2 = regaddr & 0x7;
66
67 regaddr >>= 3;
68 *page = regaddr & 0x1ff;
69 }
70
71 static u32
72 ar8216_mii_read(struct ar8216_priv *priv, int reg)
73 {
74 struct phy_device *phy = priv->phy;
75 u16 r1, r2, page;
76 u16 lo, hi;
77
78 split_addr((u32) reg, &r1, &r2, &page);
79 phy->bus->write(phy->bus, 0x18, 0, page);
80 msleep(1); /* wait for the page switch to propagate */
81 lo = phy->bus->read(phy->bus, 0x10 | r2, r1);
82 hi = phy->bus->read(phy->bus, 0x10 | r2, r1 + 1);
83
84 return (hi << 16) | lo;
85 }
86
87 static void
88 ar8216_mii_write(struct ar8216_priv *priv, int reg, u32 val)
89 {
90 struct phy_device *phy = priv->phy;
91 u16 r1, r2, r3;
92 u16 lo, hi;
93
94 split_addr((u32) reg, &r1, &r2, &r3);
95 phy->bus->write(phy->bus, 0x18, 0, r3);
96 msleep(1); /* wait for the page switch to propagate */
97
98 lo = val & 0xffff;
99 hi = (u16) (val >> 16);
100 phy->bus->write(phy->bus, 0x10 | r2, r1 + 1, hi);
101 phy->bus->write(phy->bus, 0x10 | r2, r1, lo);
102 }
103
104 static u32
105 ar8216_rmw(struct ar8216_priv *priv, int reg, u32 mask, u32 val)
106 {
107 u32 v;
108
109 v = priv->read(priv, reg);
110 v &= ~mask;
111 v |= val;
112 priv->write(priv, reg, v);
113
114 return v;
115 }
116
117 static inline int
118 ar8216_id_chip(struct ar8216_priv *priv)
119 {
120 u32 val;
121 u16 id;
122 int i;
123
124 val = ar8216_mii_read(priv, AR8216_REG_CTRL);
125 if (val == ~0)
126 return UNKNOWN;
127
128 id = val & (AR8216_CTRL_REVISION | AR8216_CTRL_VERSION);
129 for (i = 0; i < AR8X16_PROBE_RETRIES; i++) {
130 u16 t;
131
132 val = ar8216_mii_read(priv, AR8216_REG_CTRL);
133 if (val == ~0)
134 return UNKNOWN;
135
136 t = val & (AR8216_CTRL_REVISION | AR8216_CTRL_VERSION);
137 if (t != id)
138 return UNKNOWN;
139 }
140
141 switch (id) {
142 case 0x0101:
143 return AR8216;
144 case 0x1001:
145 return AR8316;
146 default:
147 printk(KERN_DEBUG
148 "ar8216: Unknown Atheros device [ver=%d, rev=%d, phy_id=%04x%04x]\n",
149 (int)(id >> AR8216_CTRL_VERSION_S),
150 (int)(id & AR8216_CTRL_REVISION),
151 priv->phy->bus->read(priv->phy->bus, priv->phy->addr, 2),
152 priv->phy->bus->read(priv->phy->bus, priv->phy->addr, 3));
153
154 return UNKNOWN;
155 }
156 }
157
158 static int
159 ar8216_set_vlan(struct switch_dev *dev, const struct switch_attr *attr,
160 struct switch_val *val)
161 {
162 struct ar8216_priv *priv = to_ar8216(dev);
163 priv->vlan = !!val->value.i;
164 return 0;
165 }
166
167 static int
168 ar8216_get_vlan(struct switch_dev *dev, const struct switch_attr *attr,
169 struct switch_val *val)
170 {
171 struct ar8216_priv *priv = to_ar8216(dev);
172 val->value.i = priv->vlan;
173 return 0;
174 }
175
176
177 static int
178 ar8216_set_pvid(struct switch_dev *dev, int port, int vlan)
179 {
180 struct ar8216_priv *priv = to_ar8216(dev);
181
182 /* make sure no invalid PVIDs get set */
183
184 if (vlan >= dev->vlans)
185 return -EINVAL;
186
187 priv->pvid[port] = vlan;
188 return 0;
189 }
190
191 static int
192 ar8216_get_pvid(struct switch_dev *dev, int port, int *vlan)
193 {
194 struct ar8216_priv *priv = to_ar8216(dev);
195 *vlan = priv->pvid[port];
196 return 0;
197 }
198
199 static int
200 ar8216_set_vid(struct switch_dev *dev, const struct switch_attr *attr,
201 struct switch_val *val)
202 {
203 struct ar8216_priv *priv = to_ar8216(dev);
204 priv->vlan_id[val->port_vlan] = val->value.i;
205 return 0;
206 }
207
208 static int
209 ar8216_get_vid(struct switch_dev *dev, const struct switch_attr *attr,
210 struct switch_val *val)
211 {
212 struct ar8216_priv *priv = to_ar8216(dev);
213 val->value.i = priv->vlan_id[val->port_vlan];
214 return 0;
215 }
216
217
218 static int
219 ar8216_mangle_tx(struct sk_buff *skb, struct net_device *dev)
220 {
221 struct ar8216_priv *priv = dev->phy_ptr;
222 unsigned char *buf;
223
224 if (unlikely(!priv))
225 goto error;
226
227 if (!priv->vlan)
228 goto send;
229
230 if (unlikely(skb_headroom(skb) < 2)) {
231 if (pskb_expand_head(skb, 2, 0, GFP_ATOMIC) < 0)
232 goto error;
233 }
234
235 buf = skb_push(skb, 2);
236 buf[0] = 0x10;
237 buf[1] = 0x80;
238
239 send:
240 return priv->ndo_old->ndo_start_xmit(skb, dev);
241
242 error:
243 dev_kfree_skb_any(skb);
244 return 0;
245 }
246
247 static int
248 ar8216_mangle_rx(struct sk_buff *skb, int napi)
249 {
250 struct ar8216_priv *priv;
251 struct net_device *dev;
252 unsigned char *buf;
253 int port, vlan;
254
255 dev = skb->dev;
256 if (!dev)
257 goto error;
258
259 priv = dev->phy_ptr;
260 if (!priv)
261 goto error;
262
263 /* don't strip the header if vlan mode is disabled */
264 if (!priv->vlan)
265 goto recv;
266
267 /* strip header, get vlan id */
268 buf = skb->data;
269 skb_pull(skb, 2);
270
271 /* check for vlan header presence */
272 if ((buf[12 + 2] != 0x81) || (buf[13 + 2] != 0x00))
273 goto recv;
274
275 port = buf[0] & 0xf;
276
277 /* no need to fix up packets coming from a tagged source */
278 if (priv->vlan_tagged & (1 << port))
279 goto recv;
280
281 /* lookup port vid from local table, the switch passes an invalid vlan id */
282 vlan = priv->vlan_id[priv->pvid[port]];
283
284 buf[14 + 2] &= 0xf0;
285 buf[14 + 2] |= vlan >> 8;
286 buf[15 + 2] = vlan & 0xff;
287
288 recv:
289 skb->protocol = eth_type_trans(skb, skb->dev);
290
291 if (napi)
292 return netif_receive_skb(skb);
293 else
294 return netif_rx(skb);
295
296 error:
297 /* no vlan? eat the packet! */
298 dev_kfree_skb_any(skb);
299 return NET_RX_DROP;
300 }
301
302 static int
303 ar8216_netif_rx(struct sk_buff *skb)
304 {
305 return ar8216_mangle_rx(skb, 0);
306 }
307
308 static int
309 ar8216_netif_receive_skb(struct sk_buff *skb)
310 {
311 return ar8216_mangle_rx(skb, 1);
312 }
313
314
315 static struct switch_attr ar8216_globals[] = {
316 {
317 .type = SWITCH_TYPE_INT,
318 .name = "enable_vlan",
319 .description = "Enable VLAN mode",
320 .set = ar8216_set_vlan,
321 .get = ar8216_get_vlan,
322 .max = 1
323 },
324 };
325
326 static struct switch_attr ar8216_port[] = {
327 };
328
329 static struct switch_attr ar8216_vlan[] = {
330 {
331 .type = SWITCH_TYPE_INT,
332 .name = "vid",
333 .description = "VLAN ID (0-4094)",
334 .set = ar8216_set_vid,
335 .get = ar8216_get_vid,
336 .max = 4094,
337 },
338 };
339
340
341 static int
342 ar8216_get_ports(struct switch_dev *dev, struct switch_val *val)
343 {
344 struct ar8216_priv *priv = to_ar8216(dev);
345 u8 ports = priv->vlan_table[val->port_vlan];
346 int i;
347
348 val->len = 0;
349 for (i = 0; i < AR8216_NUM_PORTS; i++) {
350 struct switch_port *p;
351
352 if (!(ports & (1 << i)))
353 continue;
354
355 p = &val->value.ports[val->len++];
356 p->id = i;
357 if (priv->vlan_tagged & (1 << i))
358 p->flags = (1 << SWITCH_PORT_FLAG_TAGGED);
359 else
360 p->flags = 0;
361 }
362 return 0;
363 }
364
365 static int
366 ar8216_set_ports(struct switch_dev *dev, struct switch_val *val)
367 {
368 struct ar8216_priv *priv = to_ar8216(dev);
369 u8 *vt = &priv->vlan_table[val->port_vlan];
370 int i, j;
371
372 *vt = 0;
373 for (i = 0; i < val->len; i++) {
374 struct switch_port *p = &val->value.ports[i];
375
376 if (p->flags & (1 << SWITCH_PORT_FLAG_TAGGED))
377 priv->vlan_tagged |= (1 << p->id);
378 else {
379 priv->vlan_tagged &= ~(1 << p->id);
380 priv->pvid[p->id] = val->port_vlan;
381
382 /* make sure that an untagged port does not
383 * appear in other vlans */
384 for (j = 0; j < AR8X16_MAX_VLANS; j++) {
385 if (j == val->port_vlan)
386 continue;
387 priv->vlan_table[j] &= ~(1 << p->id);
388 }
389 }
390
391 *vt |= 1 << p->id;
392 }
393 return 0;
394 }
395
396 static int
397 ar8216_wait_bit(struct ar8216_priv *priv, int reg, u32 mask, u32 val)
398 {
399 int timeout = 20;
400
401 while ((priv->read(priv, reg) & mask) != val) {
402 if (timeout-- <= 0) {
403 printk(KERN_ERR "ar8216: timeout waiting for operation to complete\n");
404 return 1;
405 }
406 }
407 return 0;
408 }
409
410 static void
411 ar8216_vtu_op(struct ar8216_priv *priv, u32 op, u32 val)
412 {
413 if (ar8216_wait_bit(priv, AR8216_REG_VTU, AR8216_VTU_ACTIVE, 0))
414 return;
415 if ((op & AR8216_VTU_OP) == AR8216_VTU_OP_LOAD) {
416 val &= AR8216_VTUDATA_MEMBER;
417 val |= AR8216_VTUDATA_VALID;
418 priv->write(priv, AR8216_REG_VTU_DATA, val);
419 }
420 op |= AR8216_VTU_ACTIVE;
421 priv->write(priv, AR8216_REG_VTU, op);
422 }
423
424 static int
425 ar8216_hw_apply(struct switch_dev *dev)
426 {
427 struct ar8216_priv *priv = to_ar8216(dev);
428 u8 portmask[AR8216_NUM_PORTS];
429 int i, j;
430
431 mutex_lock(&priv->reg_mutex);
432 /* flush all vlan translation unit entries */
433 ar8216_vtu_op(priv, AR8216_VTU_OP_FLUSH, 0);
434
435 memset(portmask, 0, sizeof(portmask));
436 if (priv->vlan) {
437 /* calculate the port destination masks and load vlans
438 * into the vlan translation unit */
439 for (j = 0; j < AR8X16_MAX_VLANS; j++) {
440 u8 vp = priv->vlan_table[j];
441
442 if (!vp)
443 continue;
444
445 for (i = 0; i < AR8216_NUM_PORTS; i++) {
446 u8 mask = (1 << i);
447 if (vp & mask)
448 portmask[i] |= vp & ~mask;
449 }
450
451 ar8216_vtu_op(priv,
452 AR8216_VTU_OP_LOAD |
453 (priv->vlan_id[j] << AR8216_VTU_VID_S),
454 priv->vlan_table[j]);
455 }
456 } else {
457 /* vlan disabled:
458 * isolate all ports, but connect them to the cpu port */
459 for (i = 0; i < AR8216_NUM_PORTS; i++) {
460 if (i == AR8216_PORT_CPU)
461 continue;
462
463 portmask[i] = 1 << AR8216_PORT_CPU;
464 portmask[AR8216_PORT_CPU] |= (1 << i);
465 }
466 }
467
468 /* update the port destination mask registers and tag settings */
469 for (i = 0; i < AR8216_NUM_PORTS; i++) {
470 int egress, ingress;
471 int pvid;
472
473 if (priv->vlan) {
474 pvid = priv->vlan_id[priv->pvid[i]];
475 } else {
476 pvid = i;
477 }
478
479 if (priv->vlan && (priv->vlan_tagged & (1 << i))) {
480 egress = AR8216_OUT_ADD_VLAN;
481 } else {
482 egress = AR8216_OUT_STRIP_VLAN;
483 }
484 if (priv->vlan) {
485 ingress = AR8216_IN_SECURE;
486 } else {
487 ingress = AR8216_IN_PORT_ONLY;
488 }
489
490 ar8216_rmw(priv, AR8216_REG_PORT_CTRL(i),
491 AR8216_PORT_CTRL_LEARN | AR8216_PORT_CTRL_VLAN_MODE |
492 AR8216_PORT_CTRL_SINGLE_VLAN | AR8216_PORT_CTRL_STATE |
493 AR8216_PORT_CTRL_HEADER | AR8216_PORT_CTRL_LEARN_LOCK,
494 AR8216_PORT_CTRL_LEARN |
495 (priv->vlan && i == AR8216_PORT_CPU && (priv->chip == AR8216) ?
496 AR8216_PORT_CTRL_HEADER : 0) |
497 (egress << AR8216_PORT_CTRL_VLAN_MODE_S) |
498 (AR8216_PORT_STATE_FORWARD << AR8216_PORT_CTRL_STATE_S));
499
500 ar8216_rmw(priv, AR8216_REG_PORT_VLAN(i),
501 AR8216_PORT_VLAN_DEST_PORTS | AR8216_PORT_VLAN_MODE |
502 AR8216_PORT_VLAN_DEFAULT_ID,
503 (portmask[i] << AR8216_PORT_VLAN_DEST_PORTS_S) |
504 (ingress << AR8216_PORT_VLAN_MODE_S) |
505 (pvid << AR8216_PORT_VLAN_DEFAULT_ID_S));
506 }
507 mutex_unlock(&priv->reg_mutex);
508 return 0;
509 }
510
511 static int
512 ar8316_hw_init(struct ar8216_priv *priv) {
513 static int initialized;
514 int i;
515 u32 val;
516 struct mii_bus *bus;
517
518 if (initialized)
519 return 0;
520
521 val = priv->read(priv, 0x8);
522
523 if (priv->phy->interface == PHY_INTERFACE_MODE_RGMII) {
524 /* value taken from Ubiquiti RouterStation Pro */
525 if (val == 0x81461bea) {
526 /* switch already intialized by bootloader */
527 initialized = true;
528 return 0;
529 }
530 priv->write(priv, 0x8, 0x81461bea);
531 } else if (priv->phy->interface == PHY_INTERFACE_MODE_GMII) {
532 /* value taken from AVM Fritz!Box 7390 sources */
533 if (val == 0x010e5b71) {
534 /* switch already initialized by bootloader */
535 initialized = true;
536 return 0;
537 }
538 priv->write(priv, 0x8, 0x010e5b71);
539 } else {
540 /* no known value for phy interface */
541 printk(KERN_ERR "ar8316: unsupported mii mode: %d.\n",
542 priv->phy->interface);
543 return -EINVAL;
544 }
545
546 /* standard atheros magic */
547 priv->write(priv, 0x38, 0xc000050e);
548
549 /* Initialize the ports */
550 bus = priv->phy->bus;
551 for (i = 0; i < 5; i++) {
552 if ((i == 4) &&
553 priv->phy->interface == PHY_INTERFACE_MODE_RGMII) {
554 /* work around for phy4 rgmii mode */
555 bus->write(bus, i, MII_ATH_DBG_ADDR, 0x12);
556 bus->write(bus, i, MII_ATH_DBG_DATA, 0x480c);
557 /* rx delay */
558 bus->write(bus, i, MII_ATH_DBG_ADDR, 0x0);
559 bus->write(bus, i, MII_ATH_DBG_DATA, 0x824e);
560 /* tx delay */
561 bus->write(bus, i, MII_ATH_DBG_ADDR, 0x5);
562 bus->write(bus, i, MII_ATH_DBG_DATA, 0x3d47);
563 msleep(1000);
564 }
565
566 /* initialize the port itself */
567 bus->write(bus, i, MII_ADVERTISE,
568 ADVERTISE_ALL | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
569 bus->write(bus, i, MII_CTRL1000, ADVERTISE_1000FULL);
570 bus->write(bus, i, MII_BMCR, BMCR_RESET | BMCR_ANENABLE);
571 msleep(1000);
572 }
573 initialized = true;
574 return 0;
575 }
576
577 static int
578 ar8216_reset_switch(struct switch_dev *dev)
579 {
580 struct ar8216_priv *priv = to_ar8216(dev);
581 int i;
582
583 mutex_lock(&priv->reg_mutex);
584 memset(&priv->vlan, 0, sizeof(struct ar8216_priv) -
585 offsetof(struct ar8216_priv, vlan));
586 for (i = 0; i < AR8X16_MAX_VLANS; i++) {
587 priv->vlan_id[i] = i;
588 }
589 for (i = 0; i < AR8216_NUM_PORTS; i++) {
590 /* Enable port learning and tx */
591 priv->write(priv, AR8216_REG_PORT_CTRL(i),
592 AR8216_PORT_CTRL_LEARN |
593 (4 << AR8216_PORT_CTRL_STATE_S));
594
595 priv->write(priv, AR8216_REG_PORT_VLAN(i), 0);
596
597 /* Configure all PHYs */
598 if (i == AR8216_PORT_CPU) {
599 priv->write(priv, AR8216_REG_PORT_STATUS(i),
600 AR8216_PORT_STATUS_LINK_UP |
601 ((priv->chip == AR8316) ?
602 AR8216_PORT_SPEED_1000M : AR8216_PORT_SPEED_100M) |
603 AR8216_PORT_STATUS_TXMAC |
604 AR8216_PORT_STATUS_RXMAC |
605 ((priv->chip == AR8316) ? AR8216_PORT_STATUS_RXFLOW : 0) |
606 ((priv->chip == AR8316) ? AR8216_PORT_STATUS_TXFLOW : 0) |
607 AR8216_PORT_STATUS_DUPLEX);
608 } else {
609 priv->write(priv, AR8216_REG_PORT_STATUS(i),
610 AR8216_PORT_STATUS_LINK_AUTO);
611 }
612 }
613 /* XXX: undocumented magic from atheros, required! */
614 priv->write(priv, 0x38, 0xc000050e);
615
616 if (priv->chip == AR8216) {
617 ar8216_rmw(priv, AR8216_REG_GLOBAL_CTRL,
618 AR8216_GCTRL_MTU, 1518 + 8 + 2);
619 } else if (priv->chip == AR8316) {
620 /* enable jumbo frames */
621 ar8216_rmw(priv, AR8216_REG_GLOBAL_CTRL,
622 AR8316_GCTRL_MTU, 9018 + 8 + 2);
623 }
624
625 if (priv->chip == AR8316) {
626 /* enable cpu port to receive multicast and broadcast frames */
627 priv->write(priv, AR8216_REG_FLOOD_MASK, 0x003f003f);
628 }
629 mutex_unlock(&priv->reg_mutex);
630 return ar8216_hw_apply(dev);
631 }
632
633
634 static const struct switch_dev_ops ar8216_ops = {
635 .attr_global = {
636 .attr = ar8216_globals,
637 .n_attr = ARRAY_SIZE(ar8216_globals),
638 },
639 .attr_port = {
640 .attr = ar8216_port,
641 .n_attr = ARRAY_SIZE(ar8216_port),
642 },
643 .attr_vlan = {
644 .attr = ar8216_vlan,
645 .n_attr = ARRAY_SIZE(ar8216_vlan),
646 },
647 .get_port_pvid = ar8216_get_pvid,
648 .set_port_pvid = ar8216_set_pvid,
649 .get_vlan_ports = ar8216_get_ports,
650 .set_vlan_ports = ar8216_set_ports,
651 .apply_config = ar8216_hw_apply,
652 .reset_switch = ar8216_reset_switch,
653 };
654
655 static int
656 ar8216_config_init(struct phy_device *pdev)
657 {
658 struct ar8216_priv *priv;
659 struct net_device *dev = pdev->attached_dev;
660 struct switch_dev *swdev;
661 int ret;
662
663 priv = kzalloc(sizeof(struct ar8216_priv), GFP_KERNEL);
664 if (priv == NULL)
665 return -ENOMEM;
666
667 priv->phy = pdev;
668
669 priv->chip = ar8216_id_chip(priv);
670
671 if (pdev->addr == 0)
672 printk(KERN_INFO "%s: AR%d switch driver attached.\n",
673 pdev->attached_dev->name, priv->chip);
674
675
676 if (pdev->addr != 0) {
677 if (priv->chip == AR8316) {
678 pdev->supported |= SUPPORTED_1000baseT_Full;
679 pdev->advertising |= ADVERTISED_1000baseT_Full;
680 }
681 kfree(priv);
682 return 0;
683 }
684
685 pdev->supported = priv->chip == AR8316 ?
686 SUPPORTED_1000baseT_Full : SUPPORTED_100baseT_Full;
687 pdev->advertising = pdev->supported;
688
689 mutex_init(&priv->reg_mutex);
690 priv->read = ar8216_mii_read;
691 priv->write = ar8216_mii_write;
692
693 pdev->priv = priv;
694
695 swdev = &priv->dev;
696 swdev->cpu_port = AR8216_PORT_CPU;
697 swdev->ops = &ar8216_ops;
698
699 if (priv->chip == AR8316) {
700 swdev->name = "Atheros AR8316";
701 swdev->vlans = AR8X16_MAX_VLANS;
702 /* port 5 connected to the other mac, therefore unusable */
703 swdev->ports = (AR8216_NUM_PORTS - 1);
704 } else {
705 swdev->name = "Atheros AR8216";
706 swdev->vlans = AR8216_NUM_VLANS;
707 swdev->ports = AR8216_NUM_PORTS;
708 }
709
710 if ((ret = register_switch(&priv->dev, pdev->attached_dev)) < 0) {
711 kfree(priv);
712 goto done;
713 }
714
715 if (priv->chip == AR8316) {
716 ret = ar8316_hw_init(priv);
717 if (ret) {
718 kfree(priv);
719 goto done;
720 }
721 }
722
723 ret = ar8216_reset_switch(&priv->dev);
724 if (ret) {
725 kfree(priv);
726 goto done;
727 }
728
729 dev->phy_ptr = priv;
730
731 /* VID fixup only needed on ar8216 */
732 if (pdev->addr == 0 && priv->chip == AR8216) {
733 pdev->pkt_align = 2;
734 pdev->netif_receive_skb = ar8216_netif_receive_skb;
735 pdev->netif_rx = ar8216_netif_rx;
736 priv->ndo_old = dev->netdev_ops;
737 memcpy(&priv->ndo, priv->ndo_old, sizeof(struct net_device_ops));
738 priv->ndo.ndo_start_xmit = ar8216_mangle_tx;
739 dev->netdev_ops = &priv->ndo;
740 }
741
742 done:
743 return ret;
744 }
745
746 static int
747 ar8216_read_status(struct phy_device *phydev)
748 {
749 struct ar8216_priv *priv = phydev->priv;
750 int ret;
751 if (phydev->addr != 0) {
752 return genphy_read_status(phydev);
753 }
754
755 phydev->speed = priv->chip == AR8316 ? SPEED_1000 : SPEED_100;
756 phydev->duplex = DUPLEX_FULL;
757 phydev->link = 1;
758
759 /* flush the address translation unit */
760 mutex_lock(&priv->reg_mutex);
761 ret = ar8216_wait_bit(priv, AR8216_REG_ATU, AR8216_ATU_ACTIVE, 0);
762
763 if (!ret)
764 priv->write(priv, AR8216_REG_ATU, AR8216_ATU_OP_FLUSH);
765 else
766 ret = -ETIMEDOUT;
767 mutex_unlock(&priv->reg_mutex);
768
769 phydev->state = PHY_RUNNING;
770 netif_carrier_on(phydev->attached_dev);
771 phydev->adjust_link(phydev->attached_dev);
772
773 return ret;
774 }
775
776 static int
777 ar8216_config_aneg(struct phy_device *phydev)
778 {
779 if (phydev->addr == 0)
780 return 0;
781
782 return genphy_config_aneg(phydev);
783 }
784
785 static int
786 ar8216_probe(struct phy_device *pdev)
787 {
788 struct ar8216_priv priv;
789 u16 chip;
790
791 priv.phy = pdev;
792 chip = ar8216_id_chip(&priv);
793 if (chip == UNKNOWN)
794 return -ENODEV;
795
796 return 0;
797 }
798
799 static void
800 ar8216_remove(struct phy_device *pdev)
801 {
802 struct ar8216_priv *priv = pdev->priv;
803 struct net_device *dev = pdev->attached_dev;
804
805 if (!priv)
806 return;
807
808 if (priv->ndo_old && dev)
809 dev->netdev_ops = priv->ndo_old;
810 if (pdev->addr == 0)
811 unregister_switch(&priv->dev);
812 kfree(priv);
813 }
814
815 static struct phy_driver ar8216_driver = {
816 .phy_id = 0x004d0000,
817 .name = "Atheros AR8216/AR8316",
818 .phy_id_mask = 0xffff0000,
819 .features = PHY_BASIC_FEATURES,
820 .probe = ar8216_probe,
821 .remove = ar8216_remove,
822 .config_init = &ar8216_config_init,
823 .config_aneg = &ar8216_config_aneg,
824 .read_status = &ar8216_read_status,
825 .driver = { .owner = THIS_MODULE },
826 };
827
828 int __init
829 ar8216_init(void)
830 {
831 return phy_driver_register(&ar8216_driver);
832 }
833
834 void __exit
835 ar8216_exit(void)
836 {
837 phy_driver_unregister(&ar8216_driver);
838 }
839
840 module_init(ar8216_init);
841 module_exit(ar8216_exit);
842 MODULE_LICENSE("GPL");
843