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1// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
2/* Copyright 2019 NXP */
3
4#include <linux/acpi.h>
5#include <linux/pcs-lynx.h>
6#include <linux/phy/phy.h>
7#include <linux/property.h>
8
9#include "dpaa2-eth.h"
10#include "dpaa2-mac.h"
11
12#define phylink_to_dpaa2_mac(config) \
13 container_of((config), struct dpaa2_mac, phylink_config)
14
15#define DPMAC_PROTOCOL_CHANGE_VER_MAJOR 4
16#define DPMAC_PROTOCOL_CHANGE_VER_MINOR 8
17
18#define DPAA2_MAC_FEATURE_PROTOCOL_CHANGE BIT(0)
19
20static int dpaa2_mac_cmp_ver(struct dpaa2_mac *mac,
21 u16 ver_major, u16 ver_minor)
22{
23 if (mac->ver_major == ver_major)
24 return mac->ver_minor - ver_minor;
25 return mac->ver_major - ver_major;
26}
27
28static void dpaa2_mac_detect_features(struct dpaa2_mac *mac)
29{
30 mac->features = 0;
31
32 if (dpaa2_mac_cmp_ver(mac, DPMAC_PROTOCOL_CHANGE_VER_MAJOR,
33 DPMAC_PROTOCOL_CHANGE_VER_MINOR) >= 0)
34 mac->features |= DPAA2_MAC_FEATURE_PROTOCOL_CHANGE;
35}
36
37static int phy_mode(enum dpmac_eth_if eth_if, phy_interface_t *if_mode)
38{
39 *if_mode = PHY_INTERFACE_MODE_NA;
40
41 switch (eth_if) {
42 case DPMAC_ETH_IF_RGMII:
43 *if_mode = PHY_INTERFACE_MODE_RGMII;
44 break;
45 case DPMAC_ETH_IF_USXGMII:
46 *if_mode = PHY_INTERFACE_MODE_USXGMII;
47 break;
48 case DPMAC_ETH_IF_QSGMII:
49 *if_mode = PHY_INTERFACE_MODE_QSGMII;
50 break;
51 case DPMAC_ETH_IF_SGMII:
52 *if_mode = PHY_INTERFACE_MODE_SGMII;
53 break;
54 case DPMAC_ETH_IF_XFI:
55 *if_mode = PHY_INTERFACE_MODE_10GBASER;
56 break;
57 case DPMAC_ETH_IF_CAUI:
58 *if_mode = PHY_INTERFACE_MODE_25GBASER;
59 break;
60 default:
61 return -EINVAL;
62 }
63
64 return 0;
65}
66
67static enum dpmac_eth_if dpmac_eth_if_mode(phy_interface_t if_mode)
68{
69 switch (if_mode) {
70 case PHY_INTERFACE_MODE_RGMII:
71 case PHY_INTERFACE_MODE_RGMII_ID:
72 case PHY_INTERFACE_MODE_RGMII_RXID:
73 case PHY_INTERFACE_MODE_RGMII_TXID:
74 return DPMAC_ETH_IF_RGMII;
75 case PHY_INTERFACE_MODE_USXGMII:
76 return DPMAC_ETH_IF_USXGMII;
77 case PHY_INTERFACE_MODE_QSGMII:
78 return DPMAC_ETH_IF_QSGMII;
79 case PHY_INTERFACE_MODE_SGMII:
80 return DPMAC_ETH_IF_SGMII;
81 case PHY_INTERFACE_MODE_10GBASER:
82 return DPMAC_ETH_IF_XFI;
83 case PHY_INTERFACE_MODE_1000BASEX:
84 return DPMAC_ETH_IF_1000BASEX;
85 case PHY_INTERFACE_MODE_25GBASER:
86 return DPMAC_ETH_IF_CAUI;
87 default:
88 return DPMAC_ETH_IF_MII;
89 }
90}
91
92static struct fwnode_handle *dpaa2_mac_get_node(struct device *dev,
93 u16 dpmac_id)
94{
95 struct fwnode_handle *fwnode, *parent = NULL, *child = NULL;
96 struct device_node *dpmacs = NULL;
97 int err;
98 u32 id;
99
100 fwnode = dev_fwnode(dev->parent);
101 if (is_of_node(fwnode)) {
102 dpmacs = of_find_node_by_name(NULL, "dpmacs");
103 if (!dpmacs)
104 return NULL;
105 parent = of_fwnode_handle(dpmacs);
106 } else if (is_acpi_node(fwnode)) {
107 parent = fwnode;
108 } else {
109 /* The root dprc device didn't yet get to finalize it's probe,
110 * thus the fwnode field is not yet set. Defer probe if we are
111 * facing this situation.
112 */
113 dev_dbg(dev, "dprc not finished probing\n");
114 return ERR_PTR(-EPROBE_DEFER);
115 }
116
117 fwnode_for_each_child_node(parent, child) {
118 err = -EINVAL;
119 if (is_acpi_device_node(child))
120 err = acpi_get_local_address(ACPI_HANDLE_FWNODE(child), &id);
121 else if (is_of_node(child))
122 err = of_property_read_u32(to_of_node(child), "reg", &id);
123 if (err)
124 continue;
125
126 if (id == dpmac_id) {
127 of_node_put(dpmacs);
128 return child;
129 }
130 }
131 of_node_put(dpmacs);
132 return NULL;
133}
134
135static int dpaa2_mac_get_if_mode(struct fwnode_handle *dpmac_node,
136 struct dpmac_attr attr)
137{
138 phy_interface_t if_mode;
139 int err;
140
141 err = fwnode_get_phy_mode(dpmac_node);
142 if (err > 0)
143 return err;
144
145 err = phy_mode(attr.eth_if, &if_mode);
146 if (!err)
147 return if_mode;
148
149 return err;
150}
151
152static struct phylink_pcs *dpaa2_mac_select_pcs(struct phylink_config *config,
153 phy_interface_t interface)
154{
155 struct dpaa2_mac *mac = phylink_to_dpaa2_mac(config);
156
157 return mac->pcs;
158}
159
160static void dpaa2_mac_config(struct phylink_config *config, unsigned int mode,
161 const struct phylink_link_state *state)
162{
163 struct dpaa2_mac *mac = phylink_to_dpaa2_mac(config);
164 struct dpmac_link_state *dpmac_state = &mac->state;
165 int err;
166
167 if (linkmode_test_bit(ETHTOOL_LINK_MODE_Autoneg_BIT,
168 state->advertising))
169 dpmac_state->options |= DPMAC_LINK_OPT_AUTONEG;
170 else
171 dpmac_state->options &= ~DPMAC_LINK_OPT_AUTONEG;
172
173 err = dpmac_set_link_state(mac->mc_io, 0,
174 mac->mc_dev->mc_handle, dpmac_state);
175 if (err)
176 netdev_err(mac->net_dev, "%s: dpmac_set_link_state() = %d\n",
177 __func__, err);
178
179 if (!mac->serdes_phy)
180 return;
181
182 /* This happens only if we support changing of protocol at runtime */
183 err = dpmac_set_protocol(mac->mc_io, 0, mac->mc_dev->mc_handle,
184 dpmac_eth_if_mode(state->interface));
185 if (err)
186 netdev_err(mac->net_dev, "dpmac_set_protocol() = %d\n", err);
187
188 err = phy_set_mode_ext(mac->serdes_phy, PHY_MODE_ETHERNET, state->interface);
189 if (err)
190 netdev_err(mac->net_dev, "phy_set_mode_ext() = %d\n", err);
191}
192
193static void dpaa2_mac_link_up(struct phylink_config *config,
194 struct phy_device *phy,
195 unsigned int mode, phy_interface_t interface,
196 int speed, int duplex,
197 bool tx_pause, bool rx_pause)
198{
199 struct dpaa2_mac *mac = phylink_to_dpaa2_mac(config);
200 struct dpmac_link_state *dpmac_state = &mac->state;
201 int err;
202
203 dpmac_state->up = 1;
204
205 dpmac_state->rate = speed;
206
207 if (duplex == DUPLEX_HALF)
208 dpmac_state->options |= DPMAC_LINK_OPT_HALF_DUPLEX;
209 else if (duplex == DUPLEX_FULL)
210 dpmac_state->options &= ~DPMAC_LINK_OPT_HALF_DUPLEX;
211
212 if (rx_pause)
213 dpmac_state->options |= DPMAC_LINK_OPT_PAUSE;
214 else
215 dpmac_state->options &= ~DPMAC_LINK_OPT_PAUSE;
216
217 if (rx_pause ^ tx_pause)
218 dpmac_state->options |= DPMAC_LINK_OPT_ASYM_PAUSE;
219 else
220 dpmac_state->options &= ~DPMAC_LINK_OPT_ASYM_PAUSE;
221
222 err = dpmac_set_link_state(mac->mc_io, 0,
223 mac->mc_dev->mc_handle, dpmac_state);
224 if (err)
225 netdev_err(mac->net_dev, "%s: dpmac_set_link_state() = %d\n",
226 __func__, err);
227}
228
229static void dpaa2_mac_link_down(struct phylink_config *config,
230 unsigned int mode,
231 phy_interface_t interface)
232{
233 struct dpaa2_mac *mac = phylink_to_dpaa2_mac(config);
234 struct dpmac_link_state *dpmac_state = &mac->state;
235 int err;
236
237 dpmac_state->up = 0;
238 err = dpmac_set_link_state(mac->mc_io, 0,
239 mac->mc_dev->mc_handle, dpmac_state);
240 if (err)
241 netdev_err(mac->net_dev, "dpmac_set_link_state() = %d\n", err);
242}
243
244static const struct phylink_mac_ops dpaa2_mac_phylink_ops = {
245 .mac_select_pcs = dpaa2_mac_select_pcs,
246 .mac_config = dpaa2_mac_config,
247 .mac_link_up = dpaa2_mac_link_up,
248 .mac_link_down = dpaa2_mac_link_down,
249};
250
251static int dpaa2_pcs_create(struct dpaa2_mac *mac,
252 struct fwnode_handle *dpmac_node,
253 int id)
254{
255 struct fwnode_handle *node;
256 struct phylink_pcs *pcs;
257
258 node = fwnode_find_reference(dpmac_node, "pcs-handle", 0);
259 if (IS_ERR(node)) {
260 /* do not error out on old DTS files */
261 netdev_warn(mac->net_dev, "pcs-handle node not found\n");
262 return 0;
263 }
264
265 pcs = lynx_pcs_create_fwnode(node);
266 fwnode_handle_put(node);
267
268 if (pcs == ERR_PTR(-EPROBE_DEFER)) {
269 netdev_dbg(mac->net_dev, "missing PCS device\n");
270 return -EPROBE_DEFER;
271 }
272
273 if (pcs == ERR_PTR(-ENODEV)) {
274 netdev_err(mac->net_dev, "pcs-handle node not available\n");
275 return PTR_ERR(pcs);
276 }
277
278 if (IS_ERR(pcs)) {
279 netdev_err(mac->net_dev,
280 "lynx_pcs_create_fwnode() failed: %pe\n", pcs);
281 return PTR_ERR(pcs);
282 }
283
284 mac->pcs = pcs;
285
286 return 0;
287}
288
289static void dpaa2_pcs_destroy(struct dpaa2_mac *mac)
290{
291 struct phylink_pcs *phylink_pcs = mac->pcs;
292
293 if (phylink_pcs) {
294 lynx_pcs_destroy(phylink_pcs);
295 mac->pcs = NULL;
296 }
297}
298
299static void dpaa2_mac_set_supported_interfaces(struct dpaa2_mac *mac)
300{
301 int intf, err;
302
303 /* We support the current interface mode, and if we have a PCS
304 * similar interface modes that do not require the SerDes lane to be
305 * reconfigured.
306 */
307 __set_bit(mac->if_mode, mac->phylink_config.supported_interfaces);
308 if (mac->pcs) {
309 switch (mac->if_mode) {
310 case PHY_INTERFACE_MODE_1000BASEX:
311 case PHY_INTERFACE_MODE_SGMII:
312 __set_bit(PHY_INTERFACE_MODE_1000BASEX,
313 mac->phylink_config.supported_interfaces);
314 __set_bit(PHY_INTERFACE_MODE_SGMII,
315 mac->phylink_config.supported_interfaces);
316 break;
317
318 default:
319 break;
320 }
321 }
322
323 if (!mac->serdes_phy)
324 return;
325
326 /* In case we have access to the SerDes phy/lane, then ask the SerDes
327 * driver what interfaces are supported based on the current PLL
328 * configuration.
329 */
330 for (intf = 0; intf < PHY_INTERFACE_MODE_MAX; intf++) {
331 if (intf == PHY_INTERFACE_MODE_NA)
332 continue;
333
334 err = phy_validate(mac->serdes_phy, PHY_MODE_ETHERNET, intf, NULL);
335 if (err)
336 continue;
337
338 __set_bit(intf, mac->phylink_config.supported_interfaces);
339 }
340}
341
342void dpaa2_mac_start(struct dpaa2_mac *mac)
343{
344 ASSERT_RTNL();
345
346 if (mac->serdes_phy)
347 phy_power_on(mac->serdes_phy);
348
349 phylink_start(mac->phylink);
350}
351
352void dpaa2_mac_stop(struct dpaa2_mac *mac)
353{
354 ASSERT_RTNL();
355
356 phylink_stop(mac->phylink);
357
358 if (mac->serdes_phy)
359 phy_power_off(mac->serdes_phy);
360}
361
362int dpaa2_mac_connect(struct dpaa2_mac *mac)
363{
364 struct net_device *net_dev = mac->net_dev;
365 struct fwnode_handle *dpmac_node;
366 struct phy *serdes_phy = NULL;
367 struct phylink *phylink;
368 int err;
369
370 mac->if_link_type = mac->attr.link_type;
371
372 dpmac_node = mac->fw_node;
373 if (!dpmac_node) {
374 netdev_err(net_dev, "No dpmac@%d node found.\n", mac->attr.id);
375 return -ENODEV;
376 }
377
378 err = dpaa2_mac_get_if_mode(dpmac_node, mac->attr);
379 if (err < 0)
380 return -EINVAL;
381 mac->if_mode = err;
382
383 if (mac->features & DPAA2_MAC_FEATURE_PROTOCOL_CHANGE &&
384 !phy_interface_mode_is_rgmii(mac->if_mode) &&
385 is_of_node(dpmac_node)) {
386 serdes_phy = of_phy_get(to_of_node(dpmac_node), NULL);
387
388 if (serdes_phy == ERR_PTR(-ENODEV))
389 serdes_phy = NULL;
390 else if (IS_ERR(serdes_phy))
391 return PTR_ERR(serdes_phy);
392 else
393 phy_init(serdes_phy);
394 }
395 mac->serdes_phy = serdes_phy;
396
397 /* The MAC does not have the capability to add RGMII delays so
398 * error out if the interface mode requests them and there is no PHY
399 * to act upon them
400 */
401 if (of_phy_is_fixed_link(to_of_node(dpmac_node)) &&
402 (mac->if_mode == PHY_INTERFACE_MODE_RGMII_ID ||
403 mac->if_mode == PHY_INTERFACE_MODE_RGMII_RXID ||
404 mac->if_mode == PHY_INTERFACE_MODE_RGMII_TXID)) {
405 netdev_err(net_dev, "RGMII delay not supported\n");
406 return -EINVAL;
407 }
408
409 if ((mac->attr.link_type == DPMAC_LINK_TYPE_PHY &&
410 mac->attr.eth_if != DPMAC_ETH_IF_RGMII) ||
411 mac->attr.link_type == DPMAC_LINK_TYPE_BACKPLANE) {
412 err = dpaa2_pcs_create(mac, dpmac_node, mac->attr.id);
413 if (err)
414 return err;
415 }
416
417 memset(&mac->phylink_config, 0, sizeof(mac->phylink_config));
418 mac->phylink_config.dev = &net_dev->dev;
419 mac->phylink_config.type = PHYLINK_NETDEV;
420
421 mac->phylink_config.mac_capabilities = MAC_SYM_PAUSE | MAC_ASYM_PAUSE |
422 MAC_10FD | MAC_100FD | MAC_1000FD | MAC_2500FD | MAC_5000FD |
423 MAC_10000FD | MAC_25000FD;
424
425 dpaa2_mac_set_supported_interfaces(mac);
426
427 phylink = phylink_create(&mac->phylink_config,
428 dpmac_node, mac->if_mode,
429 &dpaa2_mac_phylink_ops);
430 if (IS_ERR(phylink)) {
431 err = PTR_ERR(phylink);
432 goto err_pcs_destroy;
433 }
434 mac->phylink = phylink;
435
436 rtnl_lock();
437 err = phylink_fwnode_phy_connect(mac->phylink, dpmac_node, 0);
438 rtnl_unlock();
439 if (err) {
440 netdev_err(net_dev, "phylink_fwnode_phy_connect() = %d\n", err);
441 goto err_phylink_destroy;
442 }
443
444 return 0;
445
446err_phylink_destroy:
447 phylink_destroy(mac->phylink);
448err_pcs_destroy:
449 dpaa2_pcs_destroy(mac);
450
451 return err;
452}
453
454void dpaa2_mac_disconnect(struct dpaa2_mac *mac)
455{
456 rtnl_lock();
457 phylink_disconnect_phy(mac->phylink);
458 rtnl_unlock();
459
460 phylink_destroy(mac->phylink);
461 dpaa2_pcs_destroy(mac);
462 of_phy_put(mac->serdes_phy);
463 mac->serdes_phy = NULL;
464}
465
466int dpaa2_mac_open(struct dpaa2_mac *mac)
467{
468 struct fsl_mc_device *dpmac_dev = mac->mc_dev;
469 struct net_device *net_dev = mac->net_dev;
470 struct fwnode_handle *fw_node;
471 int err;
472
473 err = dpmac_open(mac->mc_io, 0, dpmac_dev->obj_desc.id,
474 &dpmac_dev->mc_handle);
475 if (err || !dpmac_dev->mc_handle) {
476 netdev_err(net_dev, "dpmac_open() = %d\n", err);
477 return -ENODEV;
478 }
479
480 err = dpmac_get_attributes(mac->mc_io, 0, dpmac_dev->mc_handle,
481 &mac->attr);
482 if (err) {
483 netdev_err(net_dev, "dpmac_get_attributes() = %d\n", err);
484 goto err_close_dpmac;
485 }
486
487 err = dpmac_get_api_version(mac->mc_io, 0, &mac->ver_major, &mac->ver_minor);
488 if (err) {
489 netdev_err(net_dev, "dpmac_get_api_version() = %d\n", err);
490 goto err_close_dpmac;
491 }
492
493 dpaa2_mac_detect_features(mac);
494
495 /* Find the device node representing the MAC device and link the device
496 * behind the associated netdev to it.
497 */
498 fw_node = dpaa2_mac_get_node(&mac->mc_dev->dev, mac->attr.id);
499 if (IS_ERR(fw_node)) {
500 err = PTR_ERR(fw_node);
501 goto err_close_dpmac;
502 }
503
504 mac->fw_node = fw_node;
505 net_dev->dev.of_node = to_of_node(mac->fw_node);
506
507 return 0;
508
509err_close_dpmac:
510 dpmac_close(mac->mc_io, 0, dpmac_dev->mc_handle);
511 return err;
512}
513
514void dpaa2_mac_close(struct dpaa2_mac *mac)
515{
516 struct fsl_mc_device *dpmac_dev = mac->mc_dev;
517
518 dpmac_close(mac->mc_io, 0, dpmac_dev->mc_handle);
519 if (mac->fw_node)
520 fwnode_handle_put(mac->fw_node);
521}
522
523static char dpaa2_mac_ethtool_stats[][ETH_GSTRING_LEN] = {
524 [DPMAC_CNT_ING_ALL_FRAME] = "[mac] rx all frames",
525 [DPMAC_CNT_ING_GOOD_FRAME] = "[mac] rx frames ok",
526 [DPMAC_CNT_ING_ERR_FRAME] = "[mac] rx frame errors",
527 [DPMAC_CNT_ING_FRAME_DISCARD] = "[mac] rx frame discards",
528 [DPMAC_CNT_ING_UCAST_FRAME] = "[mac] rx u-cast",
529 [DPMAC_CNT_ING_BCAST_FRAME] = "[mac] rx b-cast",
530 [DPMAC_CNT_ING_MCAST_FRAME] = "[mac] rx m-cast",
531 [DPMAC_CNT_ING_FRAME_64] = "[mac] rx 64 bytes",
532 [DPMAC_CNT_ING_FRAME_127] = "[mac] rx 65-127 bytes",
533 [DPMAC_CNT_ING_FRAME_255] = "[mac] rx 128-255 bytes",
534 [DPMAC_CNT_ING_FRAME_511] = "[mac] rx 256-511 bytes",
535 [DPMAC_CNT_ING_FRAME_1023] = "[mac] rx 512-1023 bytes",
536 [DPMAC_CNT_ING_FRAME_1518] = "[mac] rx 1024-1518 bytes",
537 [DPMAC_CNT_ING_FRAME_1519_MAX] = "[mac] rx 1519-max bytes",
538 [DPMAC_CNT_ING_FRAG] = "[mac] rx frags",
539 [DPMAC_CNT_ING_JABBER] = "[mac] rx jabber",
540 [DPMAC_CNT_ING_ALIGN_ERR] = "[mac] rx align errors",
541 [DPMAC_CNT_ING_OVERSIZED] = "[mac] rx oversized",
542 [DPMAC_CNT_ING_VALID_PAUSE_FRAME] = "[mac] rx pause",
543 [DPMAC_CNT_ING_BYTE] = "[mac] rx bytes",
544 [DPMAC_CNT_EGR_GOOD_FRAME] = "[mac] tx frames ok",
545 [DPMAC_CNT_EGR_UCAST_FRAME] = "[mac] tx u-cast",
546 [DPMAC_CNT_EGR_MCAST_FRAME] = "[mac] tx m-cast",
547 [DPMAC_CNT_EGR_BCAST_FRAME] = "[mac] tx b-cast",
548 [DPMAC_CNT_EGR_ERR_FRAME] = "[mac] tx frame errors",
549 [DPMAC_CNT_EGR_UNDERSIZED] = "[mac] tx undersized",
550 [DPMAC_CNT_EGR_VALID_PAUSE_FRAME] = "[mac] tx b-pause",
551 [DPMAC_CNT_EGR_BYTE] = "[mac] tx bytes",
552};
553
554#define DPAA2_MAC_NUM_STATS ARRAY_SIZE(dpaa2_mac_ethtool_stats)
555
556int dpaa2_mac_get_sset_count(void)
557{
558 return DPAA2_MAC_NUM_STATS;
559}
560
561void dpaa2_mac_get_strings(u8 *data)
562{
563 u8 *p = data;
564 int i;
565
566 for (i = 0; i < DPAA2_MAC_NUM_STATS; i++) {
567 strscpy(p, dpaa2_mac_ethtool_stats[i], ETH_GSTRING_LEN);
568 p += ETH_GSTRING_LEN;
569 }
570}
571
572void dpaa2_mac_get_ethtool_stats(struct dpaa2_mac *mac, u64 *data)
573{
574 struct fsl_mc_device *dpmac_dev = mac->mc_dev;
575 int i, err;
576 u64 value;
577
578 for (i = 0; i < DPAA2_MAC_NUM_STATS; i++) {
579 err = dpmac_get_counter(mac->mc_io, 0, dpmac_dev->mc_handle,
580 i, &value);
581 if (err) {
582 netdev_err_once(mac->net_dev,
583 "dpmac_get_counter error %d\n", err);
584 *(data + i) = U64_MAX;
585 continue;
586 }
587 *(data + i) = value;
588 }
589}
1// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
2/* Copyright 2019 NXP */
3
4#include <linux/acpi.h>
5#include <linux/property.h>
6
7#include "dpaa2-eth.h"
8#include "dpaa2-mac.h"
9
10#define phylink_to_dpaa2_mac(config) \
11 container_of((config), struct dpaa2_mac, phylink_config)
12
13static int phy_mode(enum dpmac_eth_if eth_if, phy_interface_t *if_mode)
14{
15 *if_mode = PHY_INTERFACE_MODE_NA;
16
17 switch (eth_if) {
18 case DPMAC_ETH_IF_RGMII:
19 *if_mode = PHY_INTERFACE_MODE_RGMII;
20 break;
21 case DPMAC_ETH_IF_USXGMII:
22 *if_mode = PHY_INTERFACE_MODE_USXGMII;
23 break;
24 case DPMAC_ETH_IF_QSGMII:
25 *if_mode = PHY_INTERFACE_MODE_QSGMII;
26 break;
27 case DPMAC_ETH_IF_SGMII:
28 *if_mode = PHY_INTERFACE_MODE_SGMII;
29 break;
30 case DPMAC_ETH_IF_XFI:
31 *if_mode = PHY_INTERFACE_MODE_10GBASER;
32 break;
33 default:
34 return -EINVAL;
35 }
36
37 return 0;
38}
39
40static struct fwnode_handle *dpaa2_mac_get_node(struct device *dev,
41 u16 dpmac_id)
42{
43 struct fwnode_handle *fwnode, *parent, *child = NULL;
44 struct device_node *dpmacs = NULL;
45 int err;
46 u32 id;
47
48 fwnode = dev_fwnode(dev->parent);
49 if (is_of_node(fwnode)) {
50 dpmacs = of_find_node_by_name(NULL, "dpmacs");
51 if (!dpmacs)
52 return NULL;
53 parent = of_fwnode_handle(dpmacs);
54 } else if (is_acpi_node(fwnode)) {
55 parent = fwnode;
56 }
57
58 fwnode_for_each_child_node(parent, child) {
59 err = -EINVAL;
60 if (is_acpi_device_node(child))
61 err = acpi_get_local_address(ACPI_HANDLE_FWNODE(child), &id);
62 else if (is_of_node(child))
63 err = of_property_read_u32(to_of_node(child), "reg", &id);
64 if (err)
65 continue;
66
67 if (id == dpmac_id) {
68 of_node_put(dpmacs);
69 return child;
70 }
71 }
72 of_node_put(dpmacs);
73 return NULL;
74}
75
76static int dpaa2_mac_get_if_mode(struct fwnode_handle *dpmac_node,
77 struct dpmac_attr attr)
78{
79 phy_interface_t if_mode;
80 int err;
81
82 err = fwnode_get_phy_mode(dpmac_node);
83 if (err > 0)
84 return err;
85
86 err = phy_mode(attr.eth_if, &if_mode);
87 if (!err)
88 return if_mode;
89
90 return err;
91}
92
93static bool dpaa2_mac_phy_mode_mismatch(struct dpaa2_mac *mac,
94 phy_interface_t interface)
95{
96 switch (interface) {
97 /* We can switch between SGMII and 1000BASE-X at runtime with
98 * pcs-lynx
99 */
100 case PHY_INTERFACE_MODE_SGMII:
101 case PHY_INTERFACE_MODE_1000BASEX:
102 if (mac->pcs &&
103 (mac->if_mode == PHY_INTERFACE_MODE_SGMII ||
104 mac->if_mode == PHY_INTERFACE_MODE_1000BASEX))
105 return false;
106 return interface != mac->if_mode;
107
108 case PHY_INTERFACE_MODE_10GBASER:
109 case PHY_INTERFACE_MODE_USXGMII:
110 case PHY_INTERFACE_MODE_QSGMII:
111 case PHY_INTERFACE_MODE_RGMII:
112 case PHY_INTERFACE_MODE_RGMII_ID:
113 case PHY_INTERFACE_MODE_RGMII_RXID:
114 case PHY_INTERFACE_MODE_RGMII_TXID:
115 return (interface != mac->if_mode);
116 default:
117 return true;
118 }
119}
120
121static void dpaa2_mac_validate(struct phylink_config *config,
122 unsigned long *supported,
123 struct phylink_link_state *state)
124{
125 struct dpaa2_mac *mac = phylink_to_dpaa2_mac(config);
126 __ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, };
127
128 if (state->interface != PHY_INTERFACE_MODE_NA &&
129 dpaa2_mac_phy_mode_mismatch(mac, state->interface)) {
130 goto empty_set;
131 }
132
133 phylink_set_port_modes(mask);
134 phylink_set(mask, Autoneg);
135 phylink_set(mask, Pause);
136 phylink_set(mask, Asym_Pause);
137
138 switch (state->interface) {
139 case PHY_INTERFACE_MODE_NA:
140 case PHY_INTERFACE_MODE_10GBASER:
141 case PHY_INTERFACE_MODE_USXGMII:
142 phylink_set(mask, 10000baseT_Full);
143 if (state->interface == PHY_INTERFACE_MODE_10GBASER)
144 break;
145 phylink_set(mask, 5000baseT_Full);
146 phylink_set(mask, 2500baseT_Full);
147 fallthrough;
148 case PHY_INTERFACE_MODE_SGMII:
149 case PHY_INTERFACE_MODE_QSGMII:
150 case PHY_INTERFACE_MODE_1000BASEX:
151 case PHY_INTERFACE_MODE_RGMII:
152 case PHY_INTERFACE_MODE_RGMII_ID:
153 case PHY_INTERFACE_MODE_RGMII_RXID:
154 case PHY_INTERFACE_MODE_RGMII_TXID:
155 phylink_set(mask, 1000baseX_Full);
156 phylink_set(mask, 1000baseT_Full);
157 if (state->interface == PHY_INTERFACE_MODE_1000BASEX)
158 break;
159 phylink_set(mask, 100baseT_Full);
160 phylink_set(mask, 10baseT_Full);
161 break;
162 default:
163 goto empty_set;
164 }
165
166 linkmode_and(supported, supported, mask);
167 linkmode_and(state->advertising, state->advertising, mask);
168
169 return;
170
171empty_set:
172 linkmode_zero(supported);
173}
174
175static void dpaa2_mac_config(struct phylink_config *config, unsigned int mode,
176 const struct phylink_link_state *state)
177{
178 struct dpaa2_mac *mac = phylink_to_dpaa2_mac(config);
179 struct dpmac_link_state *dpmac_state = &mac->state;
180 int err;
181
182 if (state->an_enabled)
183 dpmac_state->options |= DPMAC_LINK_OPT_AUTONEG;
184 else
185 dpmac_state->options &= ~DPMAC_LINK_OPT_AUTONEG;
186
187 err = dpmac_set_link_state(mac->mc_io, 0,
188 mac->mc_dev->mc_handle, dpmac_state);
189 if (err)
190 netdev_err(mac->net_dev, "%s: dpmac_set_link_state() = %d\n",
191 __func__, err);
192}
193
194static void dpaa2_mac_link_up(struct phylink_config *config,
195 struct phy_device *phy,
196 unsigned int mode, phy_interface_t interface,
197 int speed, int duplex,
198 bool tx_pause, bool rx_pause)
199{
200 struct dpaa2_mac *mac = phylink_to_dpaa2_mac(config);
201 struct dpmac_link_state *dpmac_state = &mac->state;
202 int err;
203
204 dpmac_state->up = 1;
205
206 dpmac_state->rate = speed;
207
208 if (duplex == DUPLEX_HALF)
209 dpmac_state->options |= DPMAC_LINK_OPT_HALF_DUPLEX;
210 else if (duplex == DUPLEX_FULL)
211 dpmac_state->options &= ~DPMAC_LINK_OPT_HALF_DUPLEX;
212
213 if (rx_pause)
214 dpmac_state->options |= DPMAC_LINK_OPT_PAUSE;
215 else
216 dpmac_state->options &= ~DPMAC_LINK_OPT_PAUSE;
217
218 if (rx_pause ^ tx_pause)
219 dpmac_state->options |= DPMAC_LINK_OPT_ASYM_PAUSE;
220 else
221 dpmac_state->options &= ~DPMAC_LINK_OPT_ASYM_PAUSE;
222
223 err = dpmac_set_link_state(mac->mc_io, 0,
224 mac->mc_dev->mc_handle, dpmac_state);
225 if (err)
226 netdev_err(mac->net_dev, "%s: dpmac_set_link_state() = %d\n",
227 __func__, err);
228}
229
230static void dpaa2_mac_link_down(struct phylink_config *config,
231 unsigned int mode,
232 phy_interface_t interface)
233{
234 struct dpaa2_mac *mac = phylink_to_dpaa2_mac(config);
235 struct dpmac_link_state *dpmac_state = &mac->state;
236 int err;
237
238 dpmac_state->up = 0;
239 err = dpmac_set_link_state(mac->mc_io, 0,
240 mac->mc_dev->mc_handle, dpmac_state);
241 if (err)
242 netdev_err(mac->net_dev, "dpmac_set_link_state() = %d\n", err);
243}
244
245static const struct phylink_mac_ops dpaa2_mac_phylink_ops = {
246 .validate = dpaa2_mac_validate,
247 .mac_config = dpaa2_mac_config,
248 .mac_link_up = dpaa2_mac_link_up,
249 .mac_link_down = dpaa2_mac_link_down,
250};
251
252static int dpaa2_pcs_create(struct dpaa2_mac *mac,
253 struct fwnode_handle *dpmac_node,
254 int id)
255{
256 struct mdio_device *mdiodev;
257 struct fwnode_handle *node;
258
259 node = fwnode_find_reference(dpmac_node, "pcs-handle", 0);
260 if (IS_ERR(node)) {
261 /* do not error out on old DTS files */
262 netdev_warn(mac->net_dev, "pcs-handle node not found\n");
263 return 0;
264 }
265
266 if (!fwnode_device_is_available(node)) {
267 netdev_err(mac->net_dev, "pcs-handle node not available\n");
268 fwnode_handle_put(node);
269 return -ENODEV;
270 }
271
272 mdiodev = fwnode_mdio_find_device(node);
273 fwnode_handle_put(node);
274 if (!mdiodev)
275 return -EPROBE_DEFER;
276
277 mac->pcs = lynx_pcs_create(mdiodev);
278 if (!mac->pcs) {
279 netdev_err(mac->net_dev, "lynx_pcs_create() failed\n");
280 put_device(&mdiodev->dev);
281 return -ENOMEM;
282 }
283
284 return 0;
285}
286
287static void dpaa2_pcs_destroy(struct dpaa2_mac *mac)
288{
289 struct lynx_pcs *pcs = mac->pcs;
290
291 if (pcs) {
292 struct device *dev = &pcs->mdio->dev;
293 lynx_pcs_destroy(pcs);
294 put_device(dev);
295 mac->pcs = NULL;
296 }
297}
298
299int dpaa2_mac_connect(struct dpaa2_mac *mac)
300{
301 struct net_device *net_dev = mac->net_dev;
302 struct fwnode_handle *dpmac_node;
303 struct phylink *phylink;
304 int err;
305
306 mac->if_link_type = mac->attr.link_type;
307
308 dpmac_node = mac->fw_node;
309 if (!dpmac_node) {
310 netdev_err(net_dev, "No dpmac@%d node found.\n", mac->attr.id);
311 return -ENODEV;
312 }
313
314 err = dpaa2_mac_get_if_mode(dpmac_node, mac->attr);
315 if (err < 0)
316 return -EINVAL;
317 mac->if_mode = err;
318
319 /* The MAC does not have the capability to add RGMII delays so
320 * error out if the interface mode requests them and there is no PHY
321 * to act upon them
322 */
323 if (of_phy_is_fixed_link(to_of_node(dpmac_node)) &&
324 (mac->if_mode == PHY_INTERFACE_MODE_RGMII_ID ||
325 mac->if_mode == PHY_INTERFACE_MODE_RGMII_RXID ||
326 mac->if_mode == PHY_INTERFACE_MODE_RGMII_TXID)) {
327 netdev_err(net_dev, "RGMII delay not supported\n");
328 return -EINVAL;
329 }
330
331 if ((mac->attr.link_type == DPMAC_LINK_TYPE_PHY &&
332 mac->attr.eth_if != DPMAC_ETH_IF_RGMII) ||
333 mac->attr.link_type == DPMAC_LINK_TYPE_BACKPLANE) {
334 err = dpaa2_pcs_create(mac, dpmac_node, mac->attr.id);
335 if (err)
336 return err;
337 }
338
339 mac->phylink_config.dev = &net_dev->dev;
340 mac->phylink_config.type = PHYLINK_NETDEV;
341
342 phylink = phylink_create(&mac->phylink_config,
343 dpmac_node, mac->if_mode,
344 &dpaa2_mac_phylink_ops);
345 if (IS_ERR(phylink)) {
346 err = PTR_ERR(phylink);
347 goto err_pcs_destroy;
348 }
349 mac->phylink = phylink;
350
351 if (mac->pcs)
352 phylink_set_pcs(mac->phylink, &mac->pcs->pcs);
353
354 err = phylink_fwnode_phy_connect(mac->phylink, dpmac_node, 0);
355 if (err) {
356 netdev_err(net_dev, "phylink_fwnode_phy_connect() = %d\n", err);
357 goto err_phylink_destroy;
358 }
359
360 return 0;
361
362err_phylink_destroy:
363 phylink_destroy(mac->phylink);
364err_pcs_destroy:
365 dpaa2_pcs_destroy(mac);
366
367 return err;
368}
369
370void dpaa2_mac_disconnect(struct dpaa2_mac *mac)
371{
372 if (!mac->phylink)
373 return;
374
375 phylink_disconnect_phy(mac->phylink);
376 phylink_destroy(mac->phylink);
377 dpaa2_pcs_destroy(mac);
378}
379
380int dpaa2_mac_open(struct dpaa2_mac *mac)
381{
382 struct fsl_mc_device *dpmac_dev = mac->mc_dev;
383 struct net_device *net_dev = mac->net_dev;
384 int err;
385
386 err = dpmac_open(mac->mc_io, 0, dpmac_dev->obj_desc.id,
387 &dpmac_dev->mc_handle);
388 if (err || !dpmac_dev->mc_handle) {
389 netdev_err(net_dev, "dpmac_open() = %d\n", err);
390 return -ENODEV;
391 }
392
393 err = dpmac_get_attributes(mac->mc_io, 0, dpmac_dev->mc_handle,
394 &mac->attr);
395 if (err) {
396 netdev_err(net_dev, "dpmac_get_attributes() = %d\n", err);
397 goto err_close_dpmac;
398 }
399
400 /* Find the device node representing the MAC device and link the device
401 * behind the associated netdev to it.
402 */
403 mac->fw_node = dpaa2_mac_get_node(&mac->mc_dev->dev, mac->attr.id);
404 net_dev->dev.of_node = to_of_node(mac->fw_node);
405
406 return 0;
407
408err_close_dpmac:
409 dpmac_close(mac->mc_io, 0, dpmac_dev->mc_handle);
410 return err;
411}
412
413void dpaa2_mac_close(struct dpaa2_mac *mac)
414{
415 struct fsl_mc_device *dpmac_dev = mac->mc_dev;
416
417 dpmac_close(mac->mc_io, 0, dpmac_dev->mc_handle);
418 if (mac->fw_node)
419 fwnode_handle_put(mac->fw_node);
420}
421
422static char dpaa2_mac_ethtool_stats[][ETH_GSTRING_LEN] = {
423 [DPMAC_CNT_ING_ALL_FRAME] = "[mac] rx all frames",
424 [DPMAC_CNT_ING_GOOD_FRAME] = "[mac] rx frames ok",
425 [DPMAC_CNT_ING_ERR_FRAME] = "[mac] rx frame errors",
426 [DPMAC_CNT_ING_FRAME_DISCARD] = "[mac] rx frame discards",
427 [DPMAC_CNT_ING_UCAST_FRAME] = "[mac] rx u-cast",
428 [DPMAC_CNT_ING_BCAST_FRAME] = "[mac] rx b-cast",
429 [DPMAC_CNT_ING_MCAST_FRAME] = "[mac] rx m-cast",
430 [DPMAC_CNT_ING_FRAME_64] = "[mac] rx 64 bytes",
431 [DPMAC_CNT_ING_FRAME_127] = "[mac] rx 65-127 bytes",
432 [DPMAC_CNT_ING_FRAME_255] = "[mac] rx 128-255 bytes",
433 [DPMAC_CNT_ING_FRAME_511] = "[mac] rx 256-511 bytes",
434 [DPMAC_CNT_ING_FRAME_1023] = "[mac] rx 512-1023 bytes",
435 [DPMAC_CNT_ING_FRAME_1518] = "[mac] rx 1024-1518 bytes",
436 [DPMAC_CNT_ING_FRAME_1519_MAX] = "[mac] rx 1519-max bytes",
437 [DPMAC_CNT_ING_FRAG] = "[mac] rx frags",
438 [DPMAC_CNT_ING_JABBER] = "[mac] rx jabber",
439 [DPMAC_CNT_ING_ALIGN_ERR] = "[mac] rx align errors",
440 [DPMAC_CNT_ING_OVERSIZED] = "[mac] rx oversized",
441 [DPMAC_CNT_ING_VALID_PAUSE_FRAME] = "[mac] rx pause",
442 [DPMAC_CNT_ING_BYTE] = "[mac] rx bytes",
443 [DPMAC_CNT_EGR_GOOD_FRAME] = "[mac] tx frames ok",
444 [DPMAC_CNT_EGR_UCAST_FRAME] = "[mac] tx u-cast",
445 [DPMAC_CNT_EGR_MCAST_FRAME] = "[mac] tx m-cast",
446 [DPMAC_CNT_EGR_BCAST_FRAME] = "[mac] tx b-cast",
447 [DPMAC_CNT_EGR_ERR_FRAME] = "[mac] tx frame errors",
448 [DPMAC_CNT_EGR_UNDERSIZED] = "[mac] tx undersized",
449 [DPMAC_CNT_EGR_VALID_PAUSE_FRAME] = "[mac] tx b-pause",
450 [DPMAC_CNT_EGR_BYTE] = "[mac] tx bytes",
451};
452
453#define DPAA2_MAC_NUM_STATS ARRAY_SIZE(dpaa2_mac_ethtool_stats)
454
455int dpaa2_mac_get_sset_count(void)
456{
457 return DPAA2_MAC_NUM_STATS;
458}
459
460void dpaa2_mac_get_strings(u8 *data)
461{
462 u8 *p = data;
463 int i;
464
465 for (i = 0; i < DPAA2_MAC_NUM_STATS; i++) {
466 strlcpy(p, dpaa2_mac_ethtool_stats[i], ETH_GSTRING_LEN);
467 p += ETH_GSTRING_LEN;
468 }
469}
470
471void dpaa2_mac_get_ethtool_stats(struct dpaa2_mac *mac, u64 *data)
472{
473 struct fsl_mc_device *dpmac_dev = mac->mc_dev;
474 int i, err;
475 u64 value;
476
477 for (i = 0; i < DPAA2_MAC_NUM_STATS; i++) {
478 err = dpmac_get_counter(mac->mc_io, 0, dpmac_dev->mc_handle,
479 i, &value);
480 if (err) {
481 netdev_err_once(mac->net_dev,
482 "dpmac_get_counter error %d\n", err);
483 *(data + i) = U64_MAX;
484 continue;
485 }
486 *(data + i) = value;
487 }
488}