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WIP FPC-III support
[linux/fpc-iii.git] / drivers / net / ethernet / freescale / fman / mac.c
blob901749a7a318b7e001c7b31c9c6e41707588bb69
1 /* Copyright 2008-2015 Freescale Semiconductor, Inc.
2 *
3 * Redistribution and use in source and binary forms, with or without
4 * modification, are permitted provided that the following conditions are met:
5 * * Redistributions of source code must retain the above copyright
6 * notice, this list of conditions and the following disclaimer.
7 * * Redistributions in binary form must reproduce the above copyright
8 * notice, this list of conditions and the following disclaimer in the
9 * documentation and/or other materials provided with the distribution.
10 * * Neither the name of Freescale Semiconductor nor the
11 * names of its contributors may be used to endorse or promote products
12 * derived from this software without specific prior written permission.
13 *
14 *
15 * ALTERNATIVELY, this software may be distributed under the terms of the
16 * GNU General Public License ("GPL") as published by the Free Software
17 * Foundation, either version 2 of that License or (at your option) any
18 * later version.
19 *
20 * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
21 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
22 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
23 * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
24 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
25 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
26 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
27 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
29 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
33
34 #include <linux/init.h>
35 #include <linux/module.h>
36 #include <linux/of_address.h>
37 #include <linux/of_platform.h>
38 #include <linux/of_net.h>
39 #include <linux/of_mdio.h>
40 #include <linux/device.h>
41 #include <linux/phy.h>
42 #include <linux/netdevice.h>
43 #include <linux/phy_fixed.h>
44 #include <linux/etherdevice.h>
45 #include <linux/libfdt_env.h>
46
47 #include "mac.h"
48 #include "fman_mac.h"
49 #include "fman_dtsec.h"
50 #include "fman_tgec.h"
51 #include "fman_memac.h"
52
53 MODULE_LICENSE("Dual BSD/GPL");
54 MODULE_DESCRIPTION("FSL FMan MAC API based driver");
55
56 struct mac_priv_s {
57 struct device *dev;
58 void __iomem *vaddr;
59 u8 cell_index;
60 struct fman *fman;
61 struct device_node *internal_phy_node;
62 /* List of multicast addresses */
63 struct list_head mc_addr_list;
64 struct platform_device *eth_dev;
65 struct fixed_phy_status *fixed_link;
66 u16 speed;
67 u16 max_speed;
68
69 int (*enable)(struct fman_mac *mac_dev, enum comm_mode mode);
70 int (*disable)(struct fman_mac *mac_dev, enum comm_mode mode);
71 };
72
73 struct mac_address {
74 u8 addr[ETH_ALEN];
75 struct list_head list;
76 };
77
78 static void mac_exception(void *handle, enum fman_mac_exceptions ex)
79 {
80 struct mac_device *mac_dev;
81 struct mac_priv_s *priv;
82
83 mac_dev = handle;
84 priv = mac_dev->priv;
85
86 if (ex == FM_MAC_EX_10G_RX_FIFO_OVFL) {
87 /* don't flag RX FIFO after the first */
88 mac_dev->set_exception(mac_dev->fman_mac,
89 FM_MAC_EX_10G_RX_FIFO_OVFL, false);
90 dev_err(priv->dev, "10G MAC got RX FIFO Error = %x\n", ex);
91 }
92
93 dev_dbg(priv->dev, "%s:%s() -> %d\n", KBUILD_BASENAME ".c",
94 __func__, ex);
95 }
96
97 static void set_fman_mac_params(struct mac_device *mac_dev,
98 struct fman_mac_params *params)
99 {
100 struct mac_priv_s *priv = mac_dev->priv;
101
102 params->base_addr = (typeof(params->base_addr))
103 devm_ioremap(priv->dev, mac_dev->res->start,
104 resource_size(mac_dev->res));
105 memcpy(&params->addr, mac_dev->addr, sizeof(mac_dev->addr));
106 params->max_speed = priv->max_speed;
107 params->phy_if = mac_dev->phy_if;
108 params->basex_if = false;
109 params->mac_id = priv->cell_index;
110 params->fm = (void *)priv->fman;
111 params->exception_cb = mac_exception;
112 params->event_cb = mac_exception;
113 params->dev_id = mac_dev;
114 params->internal_phy_node = priv->internal_phy_node;
115 }
116
117 static int tgec_initialization(struct mac_device *mac_dev)
118 {
119 int err;
120 struct mac_priv_s *priv;
121 struct fman_mac_params params;
122 u32 version;
123
124 priv = mac_dev->priv;
125
126 set_fman_mac_params(mac_dev, &params);
127
128 mac_dev->fman_mac = tgec_config(&params);
129 if (!mac_dev->fman_mac) {
130 err = -EINVAL;
131 goto _return;
132 }
133
134 err = tgec_cfg_max_frame_len(mac_dev->fman_mac, fman_get_max_frm());
135 if (err < 0)
136 goto _return_fm_mac_free;
137
138 err = tgec_init(mac_dev->fman_mac);
139 if (err < 0)
140 goto _return_fm_mac_free;
141
142 /* For 10G MAC, disable Tx ECC exception */
143 err = mac_dev->set_exception(mac_dev->fman_mac,
144 FM_MAC_EX_10G_TX_ECC_ER, false);
145 if (err < 0)
146 goto _return_fm_mac_free;
147
148 err = tgec_get_version(mac_dev->fman_mac, &version);
149 if (err < 0)
150 goto _return_fm_mac_free;
151
152 dev_info(priv->dev, "FMan XGEC version: 0x%08x\n", version);
153
154 goto _return;
155
156 _return_fm_mac_free:
157 tgec_free(mac_dev->fman_mac);
158
159 _return:
160 return err;
161 }
162
163 static int dtsec_initialization(struct mac_device *mac_dev)
164 {
165 int err;
166 struct mac_priv_s *priv;
167 struct fman_mac_params params;
168 u32 version;
169
170 priv = mac_dev->priv;
171
172 set_fman_mac_params(mac_dev, &params);
173
174 mac_dev->fman_mac = dtsec_config(&params);
175 if (!mac_dev->fman_mac) {
176 err = -EINVAL;
177 goto _return;
178 }
179
180 err = dtsec_cfg_max_frame_len(mac_dev->fman_mac, fman_get_max_frm());
181 if (err < 0)
182 goto _return_fm_mac_free;
183
184 err = dtsec_cfg_pad_and_crc(mac_dev->fman_mac, true);
185 if (err < 0)
186 goto _return_fm_mac_free;
187
188 err = dtsec_init(mac_dev->fman_mac);
189 if (err < 0)
190 goto _return_fm_mac_free;
191
192 /* For 1G MAC, disable by default the MIB counters overflow interrupt */
193 err = mac_dev->set_exception(mac_dev->fman_mac,
194 FM_MAC_EX_1G_RX_MIB_CNT_OVFL, false);
195 if (err < 0)
196 goto _return_fm_mac_free;
197
198 err = dtsec_get_version(mac_dev->fman_mac, &version);
199 if (err < 0)
200 goto _return_fm_mac_free;
201
202 dev_info(priv->dev, "FMan dTSEC version: 0x%08x\n", version);
203
204 goto _return;
205
206 _return_fm_mac_free:
207 dtsec_free(mac_dev->fman_mac);
208
209 _return:
210 return err;
211 }
212
213 static int memac_initialization(struct mac_device *mac_dev)
214 {
215 int err;
216 struct mac_priv_s *priv;
217 struct fman_mac_params params;
218
219 priv = mac_dev->priv;
220
221 set_fman_mac_params(mac_dev, &params);
222
223 if (priv->max_speed == SPEED_10000)
224 params.phy_if = PHY_INTERFACE_MODE_XGMII;
225
226 mac_dev->fman_mac = memac_config(&params);
227 if (!mac_dev->fman_mac) {
228 err = -EINVAL;
229 goto _return;
230 }
231
232 err = memac_cfg_max_frame_len(mac_dev->fman_mac, fman_get_max_frm());
233 if (err < 0)
234 goto _return_fm_mac_free;
235
236 err = memac_cfg_reset_on_init(mac_dev->fman_mac, true);
237 if (err < 0)
238 goto _return_fm_mac_free;
239
240 err = memac_cfg_fixed_link(mac_dev->fman_mac, priv->fixed_link);
241 if (err < 0)
242 goto _return_fm_mac_free;
243
244 err = memac_init(mac_dev->fman_mac);
245 if (err < 0)
246 goto _return_fm_mac_free;
247
248 dev_info(priv->dev, "FMan MEMAC\n");
249
250 goto _return;
251
252 _return_fm_mac_free:
253 memac_free(mac_dev->fman_mac);
254
255 _return:
256 return err;
257 }
258
259 static int start(struct mac_device *mac_dev)
260 {
261 int err;
262 struct phy_device *phy_dev = mac_dev->phy_dev;
263 struct mac_priv_s *priv = mac_dev->priv;
264
265 err = priv->enable(mac_dev->fman_mac, COMM_MODE_RX_AND_TX);
266 if (!err && phy_dev)
267 phy_start(phy_dev);
268
269 return err;
270 }
271
272 static int stop(struct mac_device *mac_dev)
273 {
274 struct mac_priv_s *priv = mac_dev->priv;
275
276 if (mac_dev->phy_dev)
277 phy_stop(mac_dev->phy_dev);
278
279 return priv->disable(mac_dev->fman_mac, COMM_MODE_RX_AND_TX);
280 }
281
282 static int set_multi(struct net_device *net_dev, struct mac_device *mac_dev)
283 {
284 struct mac_priv_s *priv;
285 struct mac_address *old_addr, *tmp;
286 struct netdev_hw_addr *ha;
287 int err;
288 enet_addr_t *addr;
289
290 priv = mac_dev->priv;
291
292 /* Clear previous address list */
293 list_for_each_entry_safe(old_addr, tmp, &priv->mc_addr_list, list) {
294 addr = (enet_addr_t *)old_addr->addr;
295 err = mac_dev->remove_hash_mac_addr(mac_dev->fman_mac, addr);
296 if (err < 0)
297 return err;
298
299 list_del(&old_addr->list);
300 kfree(old_addr);
301 }
302
303 /* Add all the addresses from the new list */
304 netdev_for_each_mc_addr(ha, net_dev) {
305 addr = (enet_addr_t *)ha->addr;
306 err = mac_dev->add_hash_mac_addr(mac_dev->fman_mac, addr);
307 if (err < 0)
308 return err;
309
310 tmp = kmalloc(sizeof(*tmp), GFP_ATOMIC);
311 if (!tmp)
312 return -ENOMEM;
313
314 ether_addr_copy(tmp->addr, ha->addr);
315 list_add(&tmp->list, &priv->mc_addr_list);
316 }
317 return 0;
318 }
319
320 /**
321 * fman_set_mac_active_pause
322 * @mac_dev: A pointer to the MAC device
323 * @rx: Pause frame setting for RX
324 * @tx: Pause frame setting for TX
325 *
326 * Set the MAC RX/TX PAUSE frames settings
327 *
328 * Avoid redundant calls to FMD, if the MAC driver already contains the desired
329 * active PAUSE settings. Otherwise, the new active settings should be reflected
330 * in FMan.
331 *
332 * Return: 0 on success; Error code otherwise.
333 */
334 int fman_set_mac_active_pause(struct mac_device *mac_dev, bool rx, bool tx)
335 {
336 struct fman_mac *fman_mac = mac_dev->fman_mac;
337 int err = 0;
338
339 if (rx != mac_dev->rx_pause_active) {
340 err = mac_dev->set_rx_pause(fman_mac, rx);
341 if (likely(err == 0))
342 mac_dev->rx_pause_active = rx;
343 }
344
345 if (tx != mac_dev->tx_pause_active) {
346 u16 pause_time = (tx ? FSL_FM_PAUSE_TIME_ENABLE :
347 FSL_FM_PAUSE_TIME_DISABLE);
348
349 err = mac_dev->set_tx_pause(fman_mac, 0, pause_time, 0);
350
351 if (likely(err == 0))
352 mac_dev->tx_pause_active = tx;
353 }
354
355 return err;
356 }
357 EXPORT_SYMBOL(fman_set_mac_active_pause);
358
359 /**
360 * fman_get_pause_cfg
361 * @mac_dev: A pointer to the MAC device
362 * @rx_pause: Return value for RX setting
363 * @tx_pause: Return value for TX setting
364 *
365 * Determine the MAC RX/TX PAUSE frames settings based on PHY
366 * autonegotiation or values set by eththool.
367 *
368 * Return: Pointer to FMan device.
369 */
370 void fman_get_pause_cfg(struct mac_device *mac_dev, bool *rx_pause,
371 bool *tx_pause)
372 {
373 struct phy_device *phy_dev = mac_dev->phy_dev;
374 u16 lcl_adv, rmt_adv;
375 u8 flowctrl;
376
377 *rx_pause = *tx_pause = false;
378
379 if (!phy_dev->duplex)
380 return;
381
382 /* If PAUSE autonegotiation is disabled, the TX/RX PAUSE settings
383 * are those set by ethtool.
384 */
385 if (!mac_dev->autoneg_pause) {
386 *rx_pause = mac_dev->rx_pause_req;
387 *tx_pause = mac_dev->tx_pause_req;
388 return;
389 }
390
391 /* Else if PAUSE autonegotiation is enabled, the TX/RX PAUSE
392 * settings depend on the result of the link negotiation.
393 */
394
395 /* get local capabilities */
396 lcl_adv = linkmode_adv_to_lcl_adv_t(phy_dev->advertising);
397
398 /* get link partner capabilities */
399 rmt_adv = 0;
400 if (phy_dev->pause)
401 rmt_adv |= LPA_PAUSE_CAP;
402 if (phy_dev->asym_pause)
403 rmt_adv |= LPA_PAUSE_ASYM;
404
405 /* Calculate TX/RX settings based on local and peer advertised
406 * symmetric/asymmetric PAUSE capabilities.
407 */
408 flowctrl = mii_resolve_flowctrl_fdx(lcl_adv, rmt_adv);
409 if (flowctrl & FLOW_CTRL_RX)
410 *rx_pause = true;
411 if (flowctrl & FLOW_CTRL_TX)
412 *tx_pause = true;
413 }
414 EXPORT_SYMBOL(fman_get_pause_cfg);
415
416 static void adjust_link_void(struct mac_device *mac_dev)
417 {
418 }
419
420 static void adjust_link_dtsec(struct mac_device *mac_dev)
421 {
422 struct phy_device *phy_dev = mac_dev->phy_dev;
423 struct fman_mac *fman_mac;
424 bool rx_pause, tx_pause;
425 int err;
426
427 fman_mac = mac_dev->fman_mac;
428 if (!phy_dev->link) {
429 dtsec_restart_autoneg(fman_mac);
430
431 return;
432 }
433
434 dtsec_adjust_link(fman_mac, phy_dev->speed);
435 fman_get_pause_cfg(mac_dev, &rx_pause, &tx_pause);
436 err = fman_set_mac_active_pause(mac_dev, rx_pause, tx_pause);
437 if (err < 0)
438 dev_err(mac_dev->priv->dev, "fman_set_mac_active_pause() = %d\n",
439 err);
440 }
441
442 static void adjust_link_memac(struct mac_device *mac_dev)
443 {
444 struct phy_device *phy_dev = mac_dev->phy_dev;
445 struct fman_mac *fman_mac;
446 bool rx_pause, tx_pause;
447 int err;
448
449 fman_mac = mac_dev->fman_mac;
450 memac_adjust_link(fman_mac, phy_dev->speed);
451
452 fman_get_pause_cfg(mac_dev, &rx_pause, &tx_pause);
453 err = fman_set_mac_active_pause(mac_dev, rx_pause, tx_pause);
454 if (err < 0)
455 dev_err(mac_dev->priv->dev, "fman_set_mac_active_pause() = %d\n",
456 err);
457 }
458
459 static void setup_dtsec(struct mac_device *mac_dev)
460 {
461 mac_dev->init = dtsec_initialization;
462 mac_dev->set_promisc = dtsec_set_promiscuous;
463 mac_dev->change_addr = dtsec_modify_mac_address;
464 mac_dev->add_hash_mac_addr = dtsec_add_hash_mac_address;
465 mac_dev->remove_hash_mac_addr = dtsec_del_hash_mac_address;
466 mac_dev->set_tx_pause = dtsec_set_tx_pause_frames;
467 mac_dev->set_rx_pause = dtsec_accept_rx_pause_frames;
468 mac_dev->set_exception = dtsec_set_exception;
469 mac_dev->set_allmulti = dtsec_set_allmulti;
470 mac_dev->set_tstamp = dtsec_set_tstamp;
471 mac_dev->set_multi = set_multi;
472 mac_dev->start = start;
473 mac_dev->stop = stop;
474 mac_dev->adjust_link = adjust_link_dtsec;
475 mac_dev->priv->enable = dtsec_enable;
476 mac_dev->priv->disable = dtsec_disable;
477 }
478
479 static void setup_tgec(struct mac_device *mac_dev)
480 {
481 mac_dev->init = tgec_initialization;
482 mac_dev->set_promisc = tgec_set_promiscuous;
483 mac_dev->change_addr = tgec_modify_mac_address;
484 mac_dev->add_hash_mac_addr = tgec_add_hash_mac_address;
485 mac_dev->remove_hash_mac_addr = tgec_del_hash_mac_address;
486 mac_dev->set_tx_pause = tgec_set_tx_pause_frames;
487 mac_dev->set_rx_pause = tgec_accept_rx_pause_frames;
488 mac_dev->set_exception = tgec_set_exception;
489 mac_dev->set_allmulti = tgec_set_allmulti;
490 mac_dev->set_tstamp = tgec_set_tstamp;
491 mac_dev->set_multi = set_multi;
492 mac_dev->start = start;
493 mac_dev->stop = stop;
494 mac_dev->adjust_link = adjust_link_void;
495 mac_dev->priv->enable = tgec_enable;
496 mac_dev->priv->disable = tgec_disable;
497 }
498
499 static void setup_memac(struct mac_device *mac_dev)
500 {
501 mac_dev->init = memac_initialization;
502 mac_dev->set_promisc = memac_set_promiscuous;
503 mac_dev->change_addr = memac_modify_mac_address;
504 mac_dev->add_hash_mac_addr = memac_add_hash_mac_address;
505 mac_dev->remove_hash_mac_addr = memac_del_hash_mac_address;
506 mac_dev->set_tx_pause = memac_set_tx_pause_frames;
507 mac_dev->set_rx_pause = memac_accept_rx_pause_frames;
508 mac_dev->set_exception = memac_set_exception;
509 mac_dev->set_allmulti = memac_set_allmulti;
510 mac_dev->set_tstamp = memac_set_tstamp;
511 mac_dev->set_multi = set_multi;
512 mac_dev->start = start;
513 mac_dev->stop = stop;
514 mac_dev->adjust_link = adjust_link_memac;
515 mac_dev->priv->enable = memac_enable;
516 mac_dev->priv->disable = memac_disable;
517 }
518
519 #define DTSEC_SUPPORTED \
520 (SUPPORTED_10baseT_Half \
521 | SUPPORTED_10baseT_Full \
522 | SUPPORTED_100baseT_Half \
523 | SUPPORTED_100baseT_Full \
524 | SUPPORTED_Autoneg \
525 | SUPPORTED_Pause \
526 | SUPPORTED_Asym_Pause \
527 | SUPPORTED_MII)
528
529 static DEFINE_MUTEX(eth_lock);
530
531 static const u16 phy2speed[] = {
532 [PHY_INTERFACE_MODE_MII] = SPEED_100,
533 [PHY_INTERFACE_MODE_GMII] = SPEED_1000,
534 [PHY_INTERFACE_MODE_SGMII] = SPEED_1000,
535 [PHY_INTERFACE_MODE_TBI] = SPEED_1000,
536 [PHY_INTERFACE_MODE_RMII] = SPEED_100,
537 [PHY_INTERFACE_MODE_RGMII] = SPEED_1000,
538 [PHY_INTERFACE_MODE_RGMII_ID] = SPEED_1000,
539 [PHY_INTERFACE_MODE_RGMII_RXID] = SPEED_1000,
540 [PHY_INTERFACE_MODE_RGMII_TXID] = SPEED_1000,
541 [PHY_INTERFACE_MODE_RTBI] = SPEED_1000,
542 [PHY_INTERFACE_MODE_QSGMII] = SPEED_1000,
543 [PHY_INTERFACE_MODE_XGMII] = SPEED_10000
544 };
545
546 static struct platform_device *dpaa_eth_add_device(int fman_id,
547 struct mac_device *mac_dev)
548 {
549 struct platform_device *pdev;
550 struct dpaa_eth_data data;
551 struct mac_priv_s *priv;
552 static int dpaa_eth_dev_cnt;
553 int ret;
554
555 priv = mac_dev->priv;
556
557 data.mac_dev = mac_dev;
558 data.mac_hw_id = priv->cell_index;
559 data.fman_hw_id = fman_id;
560
561 mutex_lock(&eth_lock);
562 pdev = platform_device_alloc("dpaa-ethernet", dpaa_eth_dev_cnt);
563 if (!pdev) {
564 ret = -ENOMEM;
565 goto no_mem;
566 }
567
568 pdev->dev.parent = priv->dev;
569
570 ret = platform_device_add_data(pdev, &data, sizeof(data));
571 if (ret)
572 goto err;
573
574 ret = platform_device_add(pdev);
575 if (ret)
576 goto err;
577
578 dpaa_eth_dev_cnt++;
579 mutex_unlock(&eth_lock);
580
581 return pdev;
582
583 err:
584 platform_device_put(pdev);
585 no_mem:
586 mutex_unlock(&eth_lock);
587
588 return ERR_PTR(ret);
589 }
590
591 static const struct of_device_id mac_match[] = {
592 { .compatible = "fsl,fman-dtsec" },
593 { .compatible = "fsl,fman-xgec" },
594 { .compatible = "fsl,fman-memac" },
595 {}
596 };
597 MODULE_DEVICE_TABLE(of, mac_match);
598
599 static int mac_probe(struct platform_device *_of_dev)
600 {
601 int err, i, nph;
602 struct device *dev;
603 struct device_node *mac_node, *dev_node;
604 struct mac_device *mac_dev;
605 struct platform_device *of_dev;
606 struct resource res;
607 struct mac_priv_s *priv;
608 const u8 *mac_addr;
609 u32 val;
610 u8 fman_id;
611 phy_interface_t phy_if;
612
613 dev = &_of_dev->dev;
614 mac_node = dev->of_node;
615
616 mac_dev = devm_kzalloc(dev, sizeof(*mac_dev), GFP_KERNEL);
617 if (!mac_dev) {
618 err = -ENOMEM;
619 goto _return;
620 }
621 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
622 if (!priv) {
623 err = -ENOMEM;
624 goto _return;
625 }
626
627 /* Save private information */
628 mac_dev->priv = priv;
629 priv->dev = dev;
630
631 if (of_device_is_compatible(mac_node, "fsl,fman-dtsec")) {
632 setup_dtsec(mac_dev);
633 priv->internal_phy_node = of_parse_phandle(mac_node,
634 "tbi-handle", 0);
635 } else if (of_device_is_compatible(mac_node, "fsl,fman-xgec")) {
636 setup_tgec(mac_dev);
637 } else if (of_device_is_compatible(mac_node, "fsl,fman-memac")) {
638 setup_memac(mac_dev);
639 priv->internal_phy_node = of_parse_phandle(mac_node,
640 "pcsphy-handle", 0);
641 } else {
642 dev_err(dev, "MAC node (%pOF) contains unsupported MAC\n",
643 mac_node);
644 err = -EINVAL;
645 goto _return;
646 }
647
648 INIT_LIST_HEAD(&priv->mc_addr_list);
649
650 /* Get the FM node */
651 dev_node = of_get_parent(mac_node);
652 if (!dev_node) {
653 dev_err(dev, "of_get_parent(%pOF) failed\n",
654 mac_node);
655 err = -EINVAL;
656 goto _return_of_get_parent;
657 }
658
659 of_dev = of_find_device_by_node(dev_node);
660 if (!of_dev) {
661 dev_err(dev, "of_find_device_by_node(%pOF) failed\n", dev_node);
662 err = -EINVAL;
663 goto _return_of_node_put;
664 }
665
666 /* Get the FMan cell-index */
667 err = of_property_read_u32(dev_node, "cell-index", &val);
668 if (err) {
669 dev_err(dev, "failed to read cell-index for %pOF\n", dev_node);
670 err = -EINVAL;
671 goto _return_of_node_put;
672 }
673 /* cell-index 0 => FMan id 1 */
674 fman_id = (u8)(val + 1);
675
676 priv->fman = fman_bind(&of_dev->dev);
677 if (!priv->fman) {
678 dev_err(dev, "fman_bind(%pOF) failed\n", dev_node);
679 err = -ENODEV;
680 goto _return_of_node_put;
681 }
682
683 of_node_put(dev_node);
684
685 /* Get the address of the memory mapped registers */
686 err = of_address_to_resource(mac_node, 0, &res);
687 if (err < 0) {
688 dev_err(dev, "of_address_to_resource(%pOF) = %d\n",
689 mac_node, err);
690 goto _return_of_get_parent;
691 }
692
693 mac_dev->res = __devm_request_region(dev,
694 fman_get_mem_region(priv->fman),
695 res.start, resource_size(&res),
696 "mac");
697 if (!mac_dev->res) {
698 dev_err(dev, "__devm_request_mem_region(mac) failed\n");
699 err = -EBUSY;
700 goto _return_of_get_parent;
701 }
702
703 priv->vaddr = devm_ioremap(dev, mac_dev->res->start,
704 resource_size(mac_dev->res));
705 if (!priv->vaddr) {
706 dev_err(dev, "devm_ioremap() failed\n");
707 err = -EIO;
708 goto _return_of_get_parent;
709 }
710
711 if (!of_device_is_available(mac_node)) {
712 err = -ENODEV;
713 goto _return_of_get_parent;
714 }
715
716 /* Get the cell-index */
717 err = of_property_read_u32(mac_node, "cell-index", &val);
718 if (err) {
719 dev_err(dev, "failed to read cell-index for %pOF\n", mac_node);
720 err = -EINVAL;
721 goto _return_of_get_parent;
722 }
723 priv->cell_index = (u8)val;
724
725 /* Get the MAC address */
726 mac_addr = of_get_mac_address(mac_node);
727 if (IS_ERR(mac_addr))
728 dev_warn(dev, "of_get_mac_address(%pOF) failed\n", mac_node);
729 else
730 ether_addr_copy(mac_dev->addr, mac_addr);
731
732 /* Get the port handles */
733 nph = of_count_phandle_with_args(mac_node, "fsl,fman-ports", NULL);
734 if (unlikely(nph < 0)) {
735 dev_err(dev, "of_count_phandle_with_args(%pOF, fsl,fman-ports) failed\n",
736 mac_node);
737 err = nph;
738 goto _return_of_get_parent;
739 }
740
741 if (nph != ARRAY_SIZE(mac_dev->port)) {
742 dev_err(dev, "Not supported number of fman-ports handles of mac node %pOF from device tree\n",
743 mac_node);
744 err = -EINVAL;
745 goto _return_of_get_parent;
746 }
747
748 for (i = 0; i < ARRAY_SIZE(mac_dev->port); i++) {
749 /* Find the port node */
750 dev_node = of_parse_phandle(mac_node, "fsl,fman-ports", i);
751 if (!dev_node) {
752 dev_err(dev, "of_parse_phandle(%pOF, fsl,fman-ports) failed\n",
753 mac_node);
754 err = -EINVAL;
755 goto _return_of_node_put;
756 }
757
758 of_dev = of_find_device_by_node(dev_node);
759 if (!of_dev) {
760 dev_err(dev, "of_find_device_by_node(%pOF) failed\n",
761 dev_node);
762 err = -EINVAL;
763 goto _return_of_node_put;
764 }
765
766 mac_dev->port[i] = fman_port_bind(&of_dev->dev);
767 if (!mac_dev->port[i]) {
768 dev_err(dev, "dev_get_drvdata(%pOF) failed\n",
769 dev_node);
770 err = -EINVAL;
771 goto _return_of_node_put;
772 }
773 of_node_put(dev_node);
774 }
775
776 /* Get the PHY connection type */
777 err = of_get_phy_mode(mac_node, &phy_if);
778 if (err) {
779 dev_warn(dev,
780 "of_get_phy_mode() for %pOF failed. Defaulting to SGMII\n",
781 mac_node);
782 phy_if = PHY_INTERFACE_MODE_SGMII;
783 }
784 mac_dev->phy_if = phy_if;
785
786 priv->speed = phy2speed[mac_dev->phy_if];
787 priv->max_speed = priv->speed;
788 mac_dev->if_support = DTSEC_SUPPORTED;
789 /* We don't support half-duplex in SGMII mode */
790 if (mac_dev->phy_if == PHY_INTERFACE_MODE_SGMII)
791 mac_dev->if_support &= ~(SUPPORTED_10baseT_Half |
792 SUPPORTED_100baseT_Half);
793
794 /* Gigabit support (no half-duplex) */
795 if (priv->max_speed == 1000)
796 mac_dev->if_support |= SUPPORTED_1000baseT_Full;
797
798 /* The 10G interface only supports one mode */
799 if (mac_dev->phy_if == PHY_INTERFACE_MODE_XGMII)
800 mac_dev->if_support = SUPPORTED_10000baseT_Full;
801
802 /* Get the rest of the PHY information */
803 mac_dev->phy_node = of_parse_phandle(mac_node, "phy-handle", 0);
804 if (!mac_dev->phy_node && of_phy_is_fixed_link(mac_node)) {
805 struct phy_device *phy;
806
807 err = of_phy_register_fixed_link(mac_node);
808 if (err)
809 goto _return_of_get_parent;
810
811 priv->fixed_link = kzalloc(sizeof(*priv->fixed_link),
812 GFP_KERNEL);
813 if (!priv->fixed_link) {
814 err = -ENOMEM;
815 goto _return_of_get_parent;
816 }
817
818 mac_dev->phy_node = of_node_get(mac_node);
819 phy = of_phy_find_device(mac_dev->phy_node);
820 if (!phy) {
821 err = -EINVAL;
822 of_node_put(mac_dev->phy_node);
823 goto _return_of_get_parent;
824 }
825
826 priv->fixed_link->link = phy->link;
827 priv->fixed_link->speed = phy->speed;
828 priv->fixed_link->duplex = phy->duplex;
829 priv->fixed_link->pause = phy->pause;
830 priv->fixed_link->asym_pause = phy->asym_pause;
831
832 put_device(&phy->mdio.dev);
833 }
834
835 err = mac_dev->init(mac_dev);
836 if (err < 0) {
837 dev_err(dev, "mac_dev->init() = %d\n", err);
838 of_node_put(mac_dev->phy_node);
839 goto _return_of_get_parent;
840 }
841
842 /* pause frame autonegotiation enabled */
843 mac_dev->autoneg_pause = true;
844
845 /* By intializing the values to false, force FMD to enable PAUSE frames
846 * on RX and TX
847 */
848 mac_dev->rx_pause_req = true;
849 mac_dev->tx_pause_req = true;
850 mac_dev->rx_pause_active = false;
851 mac_dev->tx_pause_active = false;
852 err = fman_set_mac_active_pause(mac_dev, true, true);
853 if (err < 0)
854 dev_err(dev, "fman_set_mac_active_pause() = %d\n", err);
855
856 if (!IS_ERR(mac_addr))
857 dev_info(dev, "FMan MAC address: %pM\n", mac_dev->addr);
858
859 priv->eth_dev = dpaa_eth_add_device(fman_id, mac_dev);
860 if (IS_ERR(priv->eth_dev)) {
861 dev_err(dev, "failed to add Ethernet platform device for MAC %d\n",
862 priv->cell_index);
863 priv->eth_dev = NULL;
864 }
865
866 goto _return;
867
868 _return_of_node_put:
869 of_node_put(dev_node);
870 _return_of_get_parent:
871 kfree(priv->fixed_link);
872 _return:
873 return err;
874 }
875
876 static struct platform_driver mac_driver = {
877 .driver = {
878 .name = KBUILD_MODNAME,
879 .of_match_table = mac_match,
880 },
881 .probe = mac_probe,
882 };
883
884 builtin_platform_driver(mac_driver);
Linux with added FPC-III support