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39339616 IL |
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 | phy_interface_t phy_if; | |
61 | struct fman *fman; | |
62 | struct device_node *phy_node; | |
63 | struct device_node *internal_phy_node; | |
64 | /* List of multicast addresses */ | |
65 | struct list_head mc_addr_list; | |
66 | struct platform_device *eth_dev; | |
67 | struct fixed_phy_status *fixed_link; | |
68 | u16 speed; | |
69 | u16 max_speed; | |
70 | ||
71 | int (*enable)(struct fman_mac *mac_dev, enum comm_mode mode); | |
72 | int (*disable)(struct fman_mac *mac_dev, enum comm_mode mode); | |
73 | }; | |
74 | ||
75 | struct mac_address { | |
76 | u8 addr[ETH_ALEN]; | |
77 | struct list_head list; | |
78 | }; | |
79 | ||
80 | static void mac_exception(void *handle, enum fman_mac_exceptions ex) | |
81 | { | |
82 | struct mac_device *mac_dev; | |
83 | struct mac_priv_s *priv; | |
84 | ||
85 | mac_dev = handle; | |
86 | priv = mac_dev->priv; | |
87 | ||
88 | if (ex == FM_MAC_EX_10G_RX_FIFO_OVFL) { | |
89 | /* don't flag RX FIFO after the first */ | |
90 | mac_dev->set_exception(mac_dev->fman_mac, | |
91 | FM_MAC_EX_10G_RX_FIFO_OVFL, false); | |
92 | dev_err(priv->dev, "10G MAC got RX FIFO Error = %x\n", ex); | |
93 | } | |
94 | ||
95 | dev_dbg(priv->dev, "%s:%s() -> %d\n", KBUILD_BASENAME ".c", | |
96 | __func__, ex); | |
97 | } | |
98 | ||
99 | static void set_fman_mac_params(struct mac_device *mac_dev, | |
100 | struct fman_mac_params *params) | |
101 | { | |
102 | struct mac_priv_s *priv = mac_dev->priv; | |
103 | ||
104 | params->base_addr = (typeof(params->base_addr)) | |
105 | devm_ioremap(priv->dev, mac_dev->res->start, | |
106 | resource_size(mac_dev->res)); | |
107 | memcpy(¶ms->addr, mac_dev->addr, sizeof(mac_dev->addr)); | |
108 | params->max_speed = priv->max_speed; | |
109 | params->phy_if = priv->phy_if; | |
110 | params->basex_if = false; | |
111 | params->mac_id = priv->cell_index; | |
112 | params->fm = (void *)priv->fman; | |
113 | params->exception_cb = mac_exception; | |
114 | params->event_cb = mac_exception; | |
115 | params->dev_id = mac_dev; | |
116 | params->internal_phy_node = priv->internal_phy_node; | |
117 | } | |
118 | ||
119 | static int tgec_initialization(struct mac_device *mac_dev) | |
120 | { | |
121 | int err; | |
122 | struct mac_priv_s *priv; | |
123 | struct fman_mac_params params; | |
124 | u32 version; | |
125 | ||
126 | priv = mac_dev->priv; | |
127 | ||
128 | set_fman_mac_params(mac_dev, ¶ms); | |
129 | ||
130 | mac_dev->fman_mac = tgec_config(¶ms); | |
131 | if (!mac_dev->fman_mac) { | |
132 | err = -EINVAL; | |
133 | goto _return; | |
134 | } | |
135 | ||
136 | err = tgec_cfg_max_frame_len(mac_dev->fman_mac, fman_get_max_frm()); | |
137 | if (err < 0) | |
138 | goto _return_fm_mac_free; | |
139 | ||
140 | err = tgec_init(mac_dev->fman_mac); | |
141 | if (err < 0) | |
142 | goto _return_fm_mac_free; | |
143 | ||
144 | /* For 10G MAC, disable Tx ECC exception */ | |
145 | err = mac_dev->set_exception(mac_dev->fman_mac, | |
146 | FM_MAC_EX_10G_TX_ECC_ER, false); | |
147 | if (err < 0) | |
148 | goto _return_fm_mac_free; | |
149 | ||
150 | err = tgec_get_version(mac_dev->fman_mac, &version); | |
151 | if (err < 0) | |
152 | goto _return_fm_mac_free; | |
153 | ||
154 | dev_info(priv->dev, "FMan XGEC version: 0x%08x\n", version); | |
155 | ||
156 | goto _return; | |
157 | ||
158 | _return_fm_mac_free: | |
159 | tgec_free(mac_dev->fman_mac); | |
160 | ||
161 | _return: | |
162 | return err; | |
163 | } | |
164 | ||
165 | static int dtsec_initialization(struct mac_device *mac_dev) | |
166 | { | |
167 | int err; | |
168 | struct mac_priv_s *priv; | |
169 | struct fman_mac_params params; | |
170 | u32 version; | |
171 | ||
172 | priv = mac_dev->priv; | |
173 | ||
174 | set_fman_mac_params(mac_dev, ¶ms); | |
175 | ||
176 | mac_dev->fman_mac = dtsec_config(¶ms); | |
177 | if (!mac_dev->fman_mac) { | |
178 | err = -EINVAL; | |
179 | goto _return; | |
180 | } | |
181 | ||
182 | err = dtsec_cfg_max_frame_len(mac_dev->fman_mac, fman_get_max_frm()); | |
183 | if (err < 0) | |
184 | goto _return_fm_mac_free; | |
185 | ||
186 | err = dtsec_cfg_pad_and_crc(mac_dev->fman_mac, true); | |
187 | if (err < 0) | |
188 | goto _return_fm_mac_free; | |
189 | ||
190 | err = dtsec_init(mac_dev->fman_mac); | |
191 | if (err < 0) | |
192 | goto _return_fm_mac_free; | |
193 | ||
194 | /* For 1G MAC, disable by default the MIB counters overflow interrupt */ | |
195 | err = mac_dev->set_exception(mac_dev->fman_mac, | |
196 | FM_MAC_EX_1G_RX_MIB_CNT_OVFL, false); | |
197 | if (err < 0) | |
198 | goto _return_fm_mac_free; | |
199 | ||
200 | err = dtsec_get_version(mac_dev->fman_mac, &version); | |
201 | if (err < 0) | |
202 | goto _return_fm_mac_free; | |
203 | ||
204 | dev_info(priv->dev, "FMan dTSEC version: 0x%08x\n", version); | |
205 | ||
206 | goto _return; | |
207 | ||
208 | _return_fm_mac_free: | |
209 | dtsec_free(mac_dev->fman_mac); | |
210 | ||
211 | _return: | |
212 | return err; | |
213 | } | |
214 | ||
215 | static int memac_initialization(struct mac_device *mac_dev) | |
216 | { | |
217 | int err; | |
218 | struct mac_priv_s *priv; | |
219 | struct fman_mac_params params; | |
220 | ||
221 | priv = mac_dev->priv; | |
222 | ||
223 | set_fman_mac_params(mac_dev, ¶ms); | |
224 | ||
225 | if (priv->max_speed == SPEED_10000) | |
226 | params.phy_if = PHY_INTERFACE_MODE_XGMII; | |
227 | ||
228 | mac_dev->fman_mac = memac_config(¶ms); | |
229 | if (!mac_dev->fman_mac) { | |
230 | err = -EINVAL; | |
231 | goto _return; | |
232 | } | |
233 | ||
234 | err = memac_cfg_max_frame_len(mac_dev->fman_mac, fman_get_max_frm()); | |
235 | if (err < 0) | |
236 | goto _return_fm_mac_free; | |
237 | ||
238 | err = memac_cfg_reset_on_init(mac_dev->fman_mac, true); | |
239 | if (err < 0) | |
240 | goto _return_fm_mac_free; | |
241 | ||
242 | err = memac_cfg_fixed_link(mac_dev->fman_mac, priv->fixed_link); | |
243 | if (err < 0) | |
244 | goto _return_fm_mac_free; | |
245 | ||
246 | err = memac_init(mac_dev->fman_mac); | |
247 | if (err < 0) | |
248 | goto _return_fm_mac_free; | |
249 | ||
250 | dev_info(priv->dev, "FMan MEMAC\n"); | |
251 | ||
252 | goto _return; | |
253 | ||
254 | _return_fm_mac_free: | |
255 | memac_free(mac_dev->fman_mac); | |
256 | ||
257 | _return: | |
258 | return err; | |
259 | } | |
260 | ||
261 | static int start(struct mac_device *mac_dev) | |
262 | { | |
263 | int err; | |
264 | struct phy_device *phy_dev = mac_dev->phy_dev; | |
265 | struct mac_priv_s *priv = mac_dev->priv; | |
266 | ||
267 | err = priv->enable(mac_dev->fman_mac, COMM_MODE_RX_AND_TX); | |
268 | if (!err && phy_dev) | |
269 | phy_start(phy_dev); | |
270 | ||
271 | return err; | |
272 | } | |
273 | ||
274 | static int stop(struct mac_device *mac_dev) | |
275 | { | |
276 | struct mac_priv_s *priv = mac_dev->priv; | |
277 | ||
278 | if (mac_dev->phy_dev) | |
279 | phy_stop(mac_dev->phy_dev); | |
280 | ||
281 | return priv->disable(mac_dev->fman_mac, COMM_MODE_RX_AND_TX); | |
282 | } | |
283 | ||
284 | static int set_multi(struct net_device *net_dev, struct mac_device *mac_dev) | |
285 | { | |
286 | struct mac_priv_s *priv; | |
287 | struct mac_address *old_addr, *tmp; | |
288 | struct netdev_hw_addr *ha; | |
289 | int err; | |
290 | enet_addr_t *addr; | |
291 | ||
292 | priv = mac_dev->priv; | |
293 | ||
294 | /* Clear previous address list */ | |
295 | list_for_each_entry_safe(old_addr, tmp, &priv->mc_addr_list, list) { | |
296 | addr = (enet_addr_t *)old_addr->addr; | |
297 | err = mac_dev->remove_hash_mac_addr(mac_dev->fman_mac, addr); | |
298 | if (err < 0) | |
299 | return err; | |
300 | ||
301 | list_del(&old_addr->list); | |
302 | kfree(old_addr); | |
303 | } | |
304 | ||
305 | /* Add all the addresses from the new list */ | |
306 | netdev_for_each_mc_addr(ha, net_dev) { | |
307 | addr = (enet_addr_t *)ha->addr; | |
308 | err = mac_dev->add_hash_mac_addr(mac_dev->fman_mac, addr); | |
309 | if (err < 0) | |
310 | return err; | |
311 | ||
312 | tmp = kmalloc(sizeof(*tmp), GFP_ATOMIC); | |
313 | if (!tmp) | |
314 | return -ENOMEM; | |
315 | ||
316 | ether_addr_copy(tmp->addr, ha->addr); | |
317 | list_add(&tmp->list, &priv->mc_addr_list); | |
318 | } | |
319 | return 0; | |
320 | } | |
321 | ||
322 | /** | |
323 | * fman_set_mac_active_pause | |
324 | * @mac_dev: A pointer to the MAC device | |
325 | * @rx: Pause frame setting for RX | |
326 | * @tx: Pause frame setting for TX | |
327 | * | |
328 | * Set the MAC RX/TX PAUSE frames settings | |
329 | * | |
330 | * Avoid redundant calls to FMD, if the MAC driver already contains the desired | |
331 | * active PAUSE settings. Otherwise, the new active settings should be reflected | |
332 | * in FMan. | |
333 | * | |
334 | * Return: 0 on success; Error code otherwise. | |
335 | */ | |
336 | int fman_set_mac_active_pause(struct mac_device *mac_dev, bool rx, bool tx) | |
337 | { | |
338 | struct fman_mac *fman_mac = mac_dev->fman_mac; | |
339 | int err = 0; | |
340 | ||
341 | if (rx != mac_dev->rx_pause_active) { | |
342 | err = mac_dev->set_rx_pause(fman_mac, rx); | |
343 | if (likely(err == 0)) | |
344 | mac_dev->rx_pause_active = rx; | |
345 | } | |
346 | ||
347 | if (tx != mac_dev->tx_pause_active) { | |
348 | u16 pause_time = (tx ? FSL_FM_PAUSE_TIME_ENABLE : | |
349 | FSL_FM_PAUSE_TIME_DISABLE); | |
350 | ||
351 | err = mac_dev->set_tx_pause(fman_mac, 0, pause_time, 0); | |
352 | ||
353 | if (likely(err == 0)) | |
354 | mac_dev->tx_pause_active = tx; | |
355 | } | |
356 | ||
357 | return err; | |
358 | } | |
359 | EXPORT_SYMBOL(fman_set_mac_active_pause); | |
360 | ||
361 | /** | |
362 | * fman_get_pause_cfg | |
363 | * @mac_dev: A pointer to the MAC device | |
364 | * @rx: Return value for RX setting | |
365 | * @tx: Return value for TX setting | |
366 | * | |
367 | * Determine the MAC RX/TX PAUSE frames settings based on PHY | |
368 | * autonegotiation or values set by eththool. | |
369 | * | |
370 | * Return: Pointer to FMan device. | |
371 | */ | |
372 | void fman_get_pause_cfg(struct mac_device *mac_dev, bool *rx_pause, | |
373 | bool *tx_pause) | |
374 | { | |
375 | struct phy_device *phy_dev = mac_dev->phy_dev; | |
376 | u16 lcl_adv, rmt_adv; | |
377 | u8 flowctrl; | |
378 | ||
379 | *rx_pause = *tx_pause = false; | |
380 | ||
381 | if (!phy_dev->duplex) | |
382 | return; | |
383 | ||
384 | /* If PAUSE autonegotiation is disabled, the TX/RX PAUSE settings | |
385 | * are those set by ethtool. | |
386 | */ | |
387 | if (!mac_dev->autoneg_pause) { | |
388 | *rx_pause = mac_dev->rx_pause_req; | |
389 | *tx_pause = mac_dev->tx_pause_req; | |
390 | return; | |
391 | } | |
392 | ||
393 | /* Else if PAUSE autonegotiation is enabled, the TX/RX PAUSE | |
394 | * settings depend on the result of the link negotiation. | |
395 | */ | |
396 | ||
397 | /* get local capabilities */ | |
398 | lcl_adv = 0; | |
399 | if (phy_dev->advertising & ADVERTISED_Pause) | |
400 | lcl_adv |= ADVERTISE_PAUSE_CAP; | |
401 | if (phy_dev->advertising & ADVERTISED_Asym_Pause) | |
402 | lcl_adv |= ADVERTISE_PAUSE_ASYM; | |
403 | ||
404 | /* get link partner capabilities */ | |
405 | rmt_adv = 0; | |
406 | if (phy_dev->pause) | |
407 | rmt_adv |= LPA_PAUSE_CAP; | |
408 | if (phy_dev->asym_pause) | |
409 | rmt_adv |= LPA_PAUSE_ASYM; | |
410 | ||
411 | /* Calculate TX/RX settings based on local and peer advertised | |
412 | * symmetric/asymmetric PAUSE capabilities. | |
413 | */ | |
414 | flowctrl = mii_resolve_flowctrl_fdx(lcl_adv, rmt_adv); | |
415 | if (flowctrl & FLOW_CTRL_RX) | |
416 | *rx_pause = true; | |
417 | if (flowctrl & FLOW_CTRL_TX) | |
418 | *tx_pause = true; | |
419 | } | |
420 | EXPORT_SYMBOL(fman_get_pause_cfg); | |
421 | ||
422 | static void adjust_link_void(struct net_device *net_dev) | |
423 | { | |
424 | } | |
425 | ||
426 | static void adjust_link_dtsec(struct net_device *net_dev) | |
427 | { | |
428 | struct device *dev = net_dev->dev.parent; | |
429 | struct dpaa_eth_data *eth_data = dev->platform_data; | |
430 | struct mac_device *mac_dev = eth_data->mac_dev; | |
431 | struct phy_device *phy_dev = mac_dev->phy_dev; | |
432 | struct fman_mac *fman_mac; | |
433 | bool rx_pause, tx_pause; | |
434 | int err; | |
435 | ||
436 | fman_mac = mac_dev->fman_mac; | |
437 | if (!phy_dev->link) { | |
438 | dtsec_restart_autoneg(fman_mac); | |
439 | ||
440 | return; | |
441 | } | |
442 | ||
443 | dtsec_adjust_link(fman_mac, phy_dev->speed); | |
444 | fman_get_pause_cfg(mac_dev, &rx_pause, &tx_pause); | |
445 | err = fman_set_mac_active_pause(mac_dev, rx_pause, tx_pause); | |
446 | if (err < 0) | |
447 | netdev_err(net_dev, "fman_set_mac_active_pause() = %d\n", err); | |
448 | } | |
449 | ||
450 | static void adjust_link_memac(struct net_device *net_dev) | |
451 | { | |
452 | struct device *dev = net_dev->dev.parent; | |
453 | struct dpaa_eth_data *eth_data = dev->platform_data; | |
454 | struct mac_device *mac_dev = eth_data->mac_dev; | |
455 | struct phy_device *phy_dev = mac_dev->phy_dev; | |
456 | struct fman_mac *fman_mac; | |
457 | bool rx_pause, tx_pause; | |
458 | int err; | |
459 | ||
460 | fman_mac = mac_dev->fman_mac; | |
461 | memac_adjust_link(fman_mac, phy_dev->speed); | |
462 | ||
463 | fman_get_pause_cfg(mac_dev, &rx_pause, &tx_pause); | |
464 | err = fman_set_mac_active_pause(mac_dev, rx_pause, tx_pause); | |
465 | if (err < 0) | |
466 | netdev_err(net_dev, "fman_set_mac_active_pause() = %d\n", err); | |
467 | } | |
468 | ||
469 | /* Initializes driver's PHY state, and attaches to the PHY. | |
470 | * Returns 0 on success. | |
471 | */ | |
472 | static int init_phy(struct net_device *net_dev, | |
473 | struct mac_device *mac_dev, | |
474 | void (*adj_lnk)(struct net_device *)) | |
475 | { | |
476 | struct phy_device *phy_dev; | |
477 | struct mac_priv_s *priv = mac_dev->priv; | |
478 | ||
479 | phy_dev = of_phy_connect(net_dev, priv->phy_node, adj_lnk, 0, | |
480 | priv->phy_if); | |
481 | if (!phy_dev) { | |
482 | netdev_err(net_dev, "Could not connect to PHY\n"); | |
483 | return -ENODEV; | |
484 | } | |
485 | ||
486 | /* Remove any features not supported by the controller */ | |
487 | phy_dev->supported &= mac_dev->if_support; | |
488 | /* Enable the symmetric and asymmetric PAUSE frame advertisements, | |
489 | * as most of the PHY drivers do not enable them by default. | |
490 | */ | |
491 | phy_dev->supported |= (SUPPORTED_Pause | SUPPORTED_Asym_Pause); | |
492 | phy_dev->advertising = phy_dev->supported; | |
493 | ||
494 | mac_dev->phy_dev = phy_dev; | |
495 | ||
496 | return 0; | |
497 | } | |
498 | ||
499 | static int dtsec_init_phy(struct net_device *net_dev, | |
500 | struct mac_device *mac_dev) | |
501 | { | |
502 | return init_phy(net_dev, mac_dev, &adjust_link_dtsec); | |
503 | } | |
504 | ||
505 | static int tgec_init_phy(struct net_device *net_dev, | |
506 | struct mac_device *mac_dev) | |
507 | { | |
508 | return init_phy(net_dev, mac_dev, adjust_link_void); | |
509 | } | |
510 | ||
511 | static int memac_init_phy(struct net_device *net_dev, | |
512 | struct mac_device *mac_dev) | |
513 | { | |
514 | return init_phy(net_dev, mac_dev, &adjust_link_memac); | |
515 | } | |
516 | ||
517 | static void setup_dtsec(struct mac_device *mac_dev) | |
518 | { | |
519 | mac_dev->init_phy = dtsec_init_phy; | |
520 | mac_dev->init = dtsec_initialization; | |
521 | mac_dev->set_promisc = dtsec_set_promiscuous; | |
522 | mac_dev->change_addr = dtsec_modify_mac_address; | |
523 | mac_dev->add_hash_mac_addr = dtsec_add_hash_mac_address; | |
524 | mac_dev->remove_hash_mac_addr = dtsec_del_hash_mac_address; | |
525 | mac_dev->set_tx_pause = dtsec_set_tx_pause_frames; | |
526 | mac_dev->set_rx_pause = dtsec_accept_rx_pause_frames; | |
527 | mac_dev->set_exception = dtsec_set_exception; | |
528 | mac_dev->set_multi = set_multi; | |
529 | mac_dev->start = start; | |
530 | mac_dev->stop = stop; | |
531 | ||
532 | mac_dev->priv->enable = dtsec_enable; | |
533 | mac_dev->priv->disable = dtsec_disable; | |
534 | } | |
535 | ||
536 | static void setup_tgec(struct mac_device *mac_dev) | |
537 | { | |
538 | mac_dev->init_phy = tgec_init_phy; | |
539 | mac_dev->init = tgec_initialization; | |
540 | mac_dev->set_promisc = tgec_set_promiscuous; | |
541 | mac_dev->change_addr = tgec_modify_mac_address; | |
542 | mac_dev->add_hash_mac_addr = tgec_add_hash_mac_address; | |
543 | mac_dev->remove_hash_mac_addr = tgec_del_hash_mac_address; | |
544 | mac_dev->set_tx_pause = tgec_set_tx_pause_frames; | |
545 | mac_dev->set_rx_pause = tgec_accept_rx_pause_frames; | |
546 | mac_dev->set_exception = tgec_set_exception; | |
547 | mac_dev->set_multi = set_multi; | |
548 | mac_dev->start = start; | |
549 | mac_dev->stop = stop; | |
550 | ||
551 | mac_dev->priv->enable = tgec_enable; | |
552 | mac_dev->priv->disable = tgec_disable; | |
553 | } | |
554 | ||
555 | static void setup_memac(struct mac_device *mac_dev) | |
556 | { | |
557 | mac_dev->init_phy = memac_init_phy; | |
558 | mac_dev->init = memac_initialization; | |
559 | mac_dev->set_promisc = memac_set_promiscuous; | |
560 | mac_dev->change_addr = memac_modify_mac_address; | |
561 | mac_dev->add_hash_mac_addr = memac_add_hash_mac_address; | |
562 | mac_dev->remove_hash_mac_addr = memac_del_hash_mac_address; | |
563 | mac_dev->set_tx_pause = memac_set_tx_pause_frames; | |
564 | mac_dev->set_rx_pause = memac_accept_rx_pause_frames; | |
565 | mac_dev->set_exception = memac_set_exception; | |
566 | mac_dev->set_multi = set_multi; | |
567 | mac_dev->start = start; | |
568 | mac_dev->stop = stop; | |
569 | ||
570 | mac_dev->priv->enable = memac_enable; | |
571 | mac_dev->priv->disable = memac_disable; | |
572 | } | |
573 | ||
574 | #define DTSEC_SUPPORTED \ | |
575 | (SUPPORTED_10baseT_Half \ | |
576 | | SUPPORTED_10baseT_Full \ | |
577 | | SUPPORTED_100baseT_Half \ | |
578 | | SUPPORTED_100baseT_Full \ | |
579 | | SUPPORTED_Autoneg \ | |
580 | | SUPPORTED_Pause \ | |
581 | | SUPPORTED_Asym_Pause \ | |
582 | | SUPPORTED_MII) | |
583 | ||
584 | static DEFINE_MUTEX(eth_lock); | |
585 | ||
586 | static const char phy_str[][11] = { | |
587 | [PHY_INTERFACE_MODE_MII] = "mii", | |
588 | [PHY_INTERFACE_MODE_GMII] = "gmii", | |
589 | [PHY_INTERFACE_MODE_SGMII] = "sgmii", | |
590 | [PHY_INTERFACE_MODE_TBI] = "tbi", | |
591 | [PHY_INTERFACE_MODE_RMII] = "rmii", | |
592 | [PHY_INTERFACE_MODE_RGMII] = "rgmii", | |
593 | [PHY_INTERFACE_MODE_RGMII_ID] = "rgmii-id", | |
594 | [PHY_INTERFACE_MODE_RGMII_RXID] = "rgmii-rxid", | |
595 | [PHY_INTERFACE_MODE_RGMII_TXID] = "rgmii-txid", | |
596 | [PHY_INTERFACE_MODE_RTBI] = "rtbi", | |
597 | [PHY_INTERFACE_MODE_XGMII] = "xgmii" | |
598 | }; | |
599 | ||
600 | static phy_interface_t __pure __attribute__((nonnull)) str2phy(const char *str) | |
601 | { | |
602 | int i; | |
603 | ||
604 | for (i = 0; i < ARRAY_SIZE(phy_str); i++) | |
605 | if (strcmp(str, phy_str[i]) == 0) | |
606 | return (phy_interface_t)i; | |
607 | ||
608 | return PHY_INTERFACE_MODE_MII; | |
609 | } | |
610 | ||
611 | static const u16 phy2speed[] = { | |
612 | [PHY_INTERFACE_MODE_MII] = SPEED_100, | |
613 | [PHY_INTERFACE_MODE_GMII] = SPEED_1000, | |
614 | [PHY_INTERFACE_MODE_SGMII] = SPEED_1000, | |
615 | [PHY_INTERFACE_MODE_TBI] = SPEED_1000, | |
616 | [PHY_INTERFACE_MODE_RMII] = SPEED_100, | |
617 | [PHY_INTERFACE_MODE_RGMII] = SPEED_1000, | |
618 | [PHY_INTERFACE_MODE_RGMII_ID] = SPEED_1000, | |
619 | [PHY_INTERFACE_MODE_RGMII_RXID] = SPEED_1000, | |
620 | [PHY_INTERFACE_MODE_RGMII_TXID] = SPEED_1000, | |
621 | [PHY_INTERFACE_MODE_RTBI] = SPEED_1000, | |
622 | [PHY_INTERFACE_MODE_XGMII] = SPEED_10000 | |
623 | }; | |
624 | ||
625 | static struct platform_device *dpaa_eth_add_device(int fman_id, | |
626 | struct mac_device *mac_dev, | |
627 | struct device_node *node) | |
628 | { | |
629 | struct platform_device *pdev; | |
630 | struct dpaa_eth_data data; | |
631 | struct mac_priv_s *priv; | |
632 | static int dpaa_eth_dev_cnt; | |
633 | int ret; | |
634 | ||
635 | priv = mac_dev->priv; | |
636 | ||
637 | data.mac_dev = mac_dev; | |
638 | data.mac_hw_id = priv->cell_index; | |
639 | data.fman_hw_id = fman_id; | |
640 | data.mac_node = node; | |
641 | ||
642 | mutex_lock(ð_lock); | |
643 | ||
644 | pdev = platform_device_alloc("dpaa-ethernet", dpaa_eth_dev_cnt); | |
645 | if (!pdev) { | |
646 | ret = -ENOMEM; | |
647 | goto no_mem; | |
648 | } | |
649 | ||
650 | ret = platform_device_add_data(pdev, &data, sizeof(data)); | |
651 | if (ret) | |
652 | goto err; | |
653 | ||
654 | ret = platform_device_add(pdev); | |
655 | if (ret) | |
656 | goto err; | |
657 | ||
658 | dpaa_eth_dev_cnt++; | |
659 | mutex_unlock(ð_lock); | |
660 | ||
661 | return pdev; | |
662 | ||
663 | err: | |
664 | platform_device_put(pdev); | |
665 | no_mem: | |
666 | mutex_unlock(ð_lock); | |
667 | ||
668 | return ERR_PTR(ret); | |
669 | } | |
670 | ||
671 | static const struct of_device_id mac_match[] = { | |
672 | { .compatible = "fsl,fman-dtsec" }, | |
673 | { .compatible = "fsl,fman-xgec" }, | |
674 | { .compatible = "fsl,fman-memac" }, | |
675 | {} | |
676 | }; | |
677 | MODULE_DEVICE_TABLE(of, mac_match); | |
678 | ||
679 | static int mac_probe(struct platform_device *_of_dev) | |
680 | { | |
681 | int err, i, lenp, nph; | |
682 | struct device *dev; | |
683 | struct device_node *mac_node, *dev_node; | |
684 | struct mac_device *mac_dev; | |
685 | struct platform_device *of_dev; | |
686 | struct resource res; | |
687 | struct mac_priv_s *priv; | |
688 | const u8 *mac_addr; | |
689 | const char *char_prop; | |
690 | const u32 *u32_prop; | |
691 | u8 fman_id; | |
692 | ||
693 | dev = &_of_dev->dev; | |
694 | mac_node = dev->of_node; | |
695 | ||
696 | mac_dev = devm_kzalloc(dev, sizeof(*mac_dev), GFP_KERNEL); | |
697 | if (!mac_dev) { | |
698 | err = -ENOMEM; | |
699 | dev_err(dev, "devm_kzalloc() = %d\n", err); | |
700 | goto _return; | |
701 | } | |
702 | priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); | |
703 | if (!priv) { | |
704 | err = -ENOMEM; | |
705 | goto _return; | |
706 | } | |
707 | ||
708 | /* Save private information */ | |
709 | mac_dev->priv = priv; | |
710 | priv->dev = dev; | |
711 | ||
712 | if (of_device_is_compatible(mac_node, "fsl,fman-dtsec")) { | |
713 | setup_dtsec(mac_dev); | |
714 | priv->internal_phy_node = of_parse_phandle(mac_node, | |
715 | "tbi-handle", 0); | |
716 | } else if (of_device_is_compatible(mac_node, "fsl,fman-xgec")) { | |
717 | setup_tgec(mac_dev); | |
718 | } else if (of_device_is_compatible(mac_node, "fsl,fman-memac")) { | |
719 | setup_memac(mac_dev); | |
720 | priv->internal_phy_node = of_parse_phandle(mac_node, | |
721 | "pcsphy-handle", 0); | |
722 | } else { | |
723 | dev_err(dev, "MAC node (%s) contains unsupported MAC\n", | |
724 | mac_node->full_name); | |
725 | err = -EINVAL; | |
726 | goto _return; | |
727 | } | |
728 | ||
729 | /* Register mac_dev */ | |
730 | dev_set_drvdata(dev, mac_dev); | |
731 | ||
732 | INIT_LIST_HEAD(&priv->mc_addr_list); | |
733 | ||
734 | /* Get the FM node */ | |
735 | dev_node = of_get_parent(mac_node); | |
736 | if (!dev_node) { | |
737 | dev_err(dev, "of_get_parent(%s) failed\n", | |
738 | mac_node->full_name); | |
739 | err = -EINVAL; | |
740 | goto _return_dev_set_drvdata; | |
741 | } | |
742 | ||
743 | of_dev = of_find_device_by_node(dev_node); | |
744 | if (!of_dev) { | |
745 | dev_err(dev, "of_find_device_by_node(%s) failed\n", | |
746 | dev_node->full_name); | |
747 | err = -EINVAL; | |
748 | goto _return_of_node_put; | |
749 | } | |
750 | ||
751 | /* Get the FMan cell-index */ | |
752 | u32_prop = of_get_property(dev_node, "cell-index", &lenp); | |
753 | if (!u32_prop) { | |
754 | dev_err(dev, "of_get_property(%s, cell-index) failed\n", | |
755 | dev_node->full_name); | |
756 | err = -EINVAL; | |
757 | goto _return_of_node_put; | |
758 | } | |
759 | WARN_ON(lenp != sizeof(u32)); | |
760 | /* cell-index 0 => FMan id 1 */ | |
761 | fman_id = (u8)(fdt32_to_cpu(u32_prop[0]) + 1); | |
762 | ||
763 | priv->fman = fman_bind(&of_dev->dev); | |
764 | if (!priv->fman) { | |
765 | dev_err(dev, "fman_bind(%s) failed\n", dev_node->full_name); | |
766 | err = -ENODEV; | |
767 | goto _return_of_node_put; | |
768 | } | |
769 | ||
770 | of_node_put(dev_node); | |
771 | ||
772 | /* Get the address of the memory mapped registers */ | |
773 | err = of_address_to_resource(mac_node, 0, &res); | |
774 | if (err < 0) { | |
775 | dev_err(dev, "of_address_to_resource(%s) = %d\n", | |
776 | mac_node->full_name, err); | |
777 | goto _return_dev_set_drvdata; | |
778 | } | |
779 | ||
780 | mac_dev->res = __devm_request_region(dev, | |
781 | fman_get_mem_region(priv->fman), | |
782 | res.start, res.end + 1 - res.start, | |
783 | "mac"); | |
784 | if (!mac_dev->res) { | |
785 | dev_err(dev, "__devm_request_mem_region(mac) failed\n"); | |
786 | err = -EBUSY; | |
787 | goto _return_dev_set_drvdata; | |
788 | } | |
789 | ||
790 | priv->vaddr = devm_ioremap(dev, mac_dev->res->start, | |
791 | mac_dev->res->end + 1 - mac_dev->res->start); | |
792 | if (!priv->vaddr) { | |
793 | dev_err(dev, "devm_ioremap() failed\n"); | |
794 | err = -EIO; | |
795 | goto _return_dev_set_drvdata; | |
796 | } | |
797 | ||
798 | if (!of_device_is_available(mac_node)) { | |
799 | devm_iounmap(dev, priv->vaddr); | |
800 | __devm_release_region(dev, fman_get_mem_region(priv->fman), | |
801 | res.start, res.end + 1 - res.start); | |
802 | devm_kfree(dev, mac_dev); | |
803 | dev_set_drvdata(dev, NULL); | |
804 | return -ENODEV; | |
805 | } | |
806 | ||
807 | /* Get the cell-index */ | |
808 | u32_prop = of_get_property(mac_node, "cell-index", &lenp); | |
809 | if (!u32_prop) { | |
810 | dev_err(dev, "of_get_property(%s, cell-index) failed\n", | |
811 | mac_node->full_name); | |
812 | err = -EINVAL; | |
813 | goto _return_dev_set_drvdata; | |
814 | } | |
815 | WARN_ON(lenp != sizeof(u32)); | |
816 | priv->cell_index = (u8)fdt32_to_cpu(u32_prop[0]); | |
817 | ||
818 | /* Get the MAC address */ | |
819 | mac_addr = of_get_mac_address(mac_node); | |
820 | if (!mac_addr) { | |
821 | dev_err(dev, "of_get_mac_address(%s) failed\n", | |
822 | mac_node->full_name); | |
823 | err = -EINVAL; | |
824 | goto _return_dev_set_drvdata; | |
825 | } | |
826 | memcpy(mac_dev->addr, mac_addr, sizeof(mac_dev->addr)); | |
827 | ||
828 | /* Get the port handles */ | |
829 | nph = of_count_phandle_with_args(mac_node, "fsl,fman-ports", NULL); | |
830 | if (unlikely(nph < 0)) { | |
831 | dev_err(dev, "of_count_phandle_with_args(%s, fsl,fman-ports) failed\n", | |
832 | mac_node->full_name); | |
833 | err = nph; | |
834 | goto _return_dev_set_drvdata; | |
835 | } | |
836 | ||
837 | if (nph != ARRAY_SIZE(mac_dev->port)) { | |
838 | dev_err(dev, "Not supported number of fman-ports handles of mac node %s from device tree\n", | |
839 | mac_node->full_name); | |
840 | err = -EINVAL; | |
841 | goto _return_dev_set_drvdata; | |
842 | } | |
843 | ||
844 | for (i = 0; i < ARRAY_SIZE(mac_dev->port); i++) { | |
845 | /* Find the port node */ | |
846 | dev_node = of_parse_phandle(mac_node, "fsl,fman-ports", i); | |
847 | if (!dev_node) { | |
848 | dev_err(dev, "of_parse_phandle(%s, fsl,fman-ports) failed\n", | |
849 | mac_node->full_name); | |
850 | err = -EINVAL; | |
851 | goto _return_of_node_put; | |
852 | } | |
853 | ||
854 | of_dev = of_find_device_by_node(dev_node); | |
855 | if (!of_dev) { | |
856 | dev_err(dev, "of_find_device_by_node(%s) failed\n", | |
857 | dev_node->full_name); | |
858 | err = -EINVAL; | |
859 | goto _return_of_node_put; | |
860 | } | |
861 | ||
862 | mac_dev->port[i] = fman_port_bind(&of_dev->dev); | |
863 | if (!mac_dev->port[i]) { | |
864 | dev_err(dev, "dev_get_drvdata(%s) failed\n", | |
865 | dev_node->full_name); | |
866 | err = -EINVAL; | |
867 | goto _return_of_node_put; | |
868 | } | |
869 | of_node_put(dev_node); | |
870 | } | |
871 | ||
872 | /* Get the PHY connection type */ | |
873 | char_prop = (const char *)of_get_property(mac_node, | |
874 | "phy-connection-type", NULL); | |
875 | if (!char_prop) { | |
876 | dev_warn(dev, | |
877 | "of_get_property(%s, phy-connection-type) failed. Defaulting to MII\n", | |
878 | mac_node->full_name); | |
879 | priv->phy_if = PHY_INTERFACE_MODE_MII; | |
880 | } else { | |
881 | priv->phy_if = str2phy(char_prop); | |
882 | } | |
883 | ||
884 | priv->speed = phy2speed[priv->phy_if]; | |
885 | priv->max_speed = priv->speed; | |
886 | mac_dev->if_support = DTSEC_SUPPORTED; | |
887 | /* We don't support half-duplex in SGMII mode */ | |
888 | if (priv->phy_if == PHY_INTERFACE_MODE_SGMII) | |
889 | mac_dev->if_support &= ~(SUPPORTED_10baseT_Half | | |
890 | SUPPORTED_100baseT_Half); | |
891 | ||
892 | /* Gigabit support (no half-duplex) */ | |
893 | if (priv->max_speed == 1000) | |
894 | mac_dev->if_support |= SUPPORTED_1000baseT_Full; | |
895 | ||
896 | /* The 10G interface only supports one mode */ | |
897 | if (priv->phy_if == PHY_INTERFACE_MODE_XGMII) | |
898 | mac_dev->if_support = SUPPORTED_10000baseT_Full; | |
899 | ||
900 | /* Get the rest of the PHY information */ | |
901 | priv->phy_node = of_parse_phandle(mac_node, "phy-handle", 0); | |
902 | if (!priv->phy_node && of_phy_is_fixed_link(mac_node)) { | |
903 | struct phy_device *phy; | |
904 | ||
905 | err = of_phy_register_fixed_link(mac_node); | |
906 | if (err) | |
907 | goto _return_dev_set_drvdata; | |
908 | ||
909 | priv->fixed_link = kzalloc(sizeof(*priv->fixed_link), | |
910 | GFP_KERNEL); | |
911 | if (!priv->fixed_link) | |
912 | goto _return_dev_set_drvdata; | |
913 | ||
914 | priv->phy_node = of_node_get(mac_node); | |
915 | phy = of_phy_find_device(priv->phy_node); | |
916 | if (!phy) | |
917 | goto _return_dev_set_drvdata; | |
918 | ||
919 | priv->fixed_link->link = phy->link; | |
920 | priv->fixed_link->speed = phy->speed; | |
921 | priv->fixed_link->duplex = phy->duplex; | |
922 | priv->fixed_link->pause = phy->pause; | |
923 | priv->fixed_link->asym_pause = phy->asym_pause; | |
924 | } | |
925 | ||
926 | err = mac_dev->init(mac_dev); | |
927 | if (err < 0) { | |
928 | dev_err(dev, "mac_dev->init() = %d\n", err); | |
929 | of_node_put(priv->phy_node); | |
930 | goto _return_dev_set_drvdata; | |
931 | } | |
932 | ||
933 | /* pause frame autonegotiation enabled */ | |
934 | mac_dev->autoneg_pause = true; | |
935 | ||
936 | /* By intializing the values to false, force FMD to enable PAUSE frames | |
937 | * on RX and TX | |
938 | */ | |
939 | mac_dev->rx_pause_req = true; | |
940 | mac_dev->tx_pause_req = true; | |
941 | mac_dev->rx_pause_active = false; | |
942 | mac_dev->tx_pause_active = false; | |
943 | err = fman_set_mac_active_pause(mac_dev, true, true); | |
944 | if (err < 0) | |
945 | dev_err(dev, "fman_set_mac_active_pause() = %d\n", err); | |
946 | ||
947 | dev_info(dev, "FMan MAC address: %02hx:%02hx:%02hx:%02hx:%02hx:%02hx\n", | |
948 | mac_dev->addr[0], mac_dev->addr[1], mac_dev->addr[2], | |
949 | mac_dev->addr[3], mac_dev->addr[4], mac_dev->addr[5]); | |
950 | ||
951 | priv->eth_dev = dpaa_eth_add_device(fman_id, mac_dev, mac_node); | |
952 | if (IS_ERR(priv->eth_dev)) { | |
953 | dev_err(dev, "failed to add Ethernet platform device for MAC %d\n", | |
954 | priv->cell_index); | |
955 | priv->eth_dev = NULL; | |
956 | } | |
957 | ||
958 | goto _return; | |
959 | ||
960 | _return_of_node_put: | |
961 | of_node_put(dev_node); | |
962 | _return_dev_set_drvdata: | |
963 | kfree(priv->fixed_link); | |
964 | kfree(priv); | |
965 | dev_set_drvdata(dev, NULL); | |
966 | _return: | |
967 | return err; | |
968 | } | |
969 | ||
970 | static struct platform_driver mac_driver = { | |
971 | .driver = { | |
972 | .name = KBUILD_MODNAME, | |
973 | .of_match_table = mac_match, | |
974 | }, | |
975 | .probe = mac_probe, | |
976 | }; | |
977 | ||
978 | builtin_platform_driver(mac_driver); |