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[thirdparty/linux.git] / drivers / net / ethernet / mscc / ocelot.c
1 // SPDX-License-Identifier: (GPL-2.0 OR MIT)
2 /*
3 * Microsemi Ocelot Switch driver
4 *
5 * Copyright (c) 2017 Microsemi Corporation
6 */
7 #include <linux/etherdevice.h>
8 #include <linux/ethtool.h>
9 #include <linux/if_bridge.h>
10 #include <linux/if_ether.h>
11 #include <linux/if_vlan.h>
12 #include <linux/interrupt.h>
13 #include <linux/kernel.h>
14 #include <linux/module.h>
15 #include <linux/netdevice.h>
16 #include <linux/phy.h>
17 #include <linux/ptp_clock_kernel.h>
18 #include <linux/skbuff.h>
19 #include <linux/iopoll.h>
20 #include <net/arp.h>
21 #include <net/netevent.h>
22 #include <net/rtnetlink.h>
23 #include <net/switchdev.h>
24
25 #include "ocelot.h"
26 #include "ocelot_ace.h"
27
28 #define TABLE_UPDATE_SLEEP_US 10
29 #define TABLE_UPDATE_TIMEOUT_US 100000
30
31 /* MAC table entry types.
32 * ENTRYTYPE_NORMAL is subject to aging.
33 * ENTRYTYPE_LOCKED is not subject to aging.
34 * ENTRYTYPE_MACv4 is not subject to aging. For IPv4 multicast.
35 * ENTRYTYPE_MACv6 is not subject to aging. For IPv6 multicast.
36 */
37 enum macaccess_entry_type {
38 ENTRYTYPE_NORMAL = 0,
39 ENTRYTYPE_LOCKED,
40 ENTRYTYPE_MACv4,
41 ENTRYTYPE_MACv6,
42 };
43
44 struct ocelot_mact_entry {
45 u8 mac[ETH_ALEN];
46 u16 vid;
47 enum macaccess_entry_type type;
48 };
49
50 static inline u32 ocelot_mact_read_macaccess(struct ocelot *ocelot)
51 {
52 return ocelot_read(ocelot, ANA_TABLES_MACACCESS);
53 }
54
55 static inline int ocelot_mact_wait_for_completion(struct ocelot *ocelot)
56 {
57 u32 val;
58
59 return readx_poll_timeout(ocelot_mact_read_macaccess,
60 ocelot, val,
61 (val & ANA_TABLES_MACACCESS_MAC_TABLE_CMD_M) ==
62 MACACCESS_CMD_IDLE,
63 TABLE_UPDATE_SLEEP_US, TABLE_UPDATE_TIMEOUT_US);
64 }
65
66 static void ocelot_mact_select(struct ocelot *ocelot,
67 const unsigned char mac[ETH_ALEN],
68 unsigned int vid)
69 {
70 u32 macl = 0, mach = 0;
71
72 /* Set the MAC address to handle and the vlan associated in a format
73 * understood by the hardware.
74 */
75 mach |= vid << 16;
76 mach |= mac[0] << 8;
77 mach |= mac[1] << 0;
78 macl |= mac[2] << 24;
79 macl |= mac[3] << 16;
80 macl |= mac[4] << 8;
81 macl |= mac[5] << 0;
82
83 ocelot_write(ocelot, macl, ANA_TABLES_MACLDATA);
84 ocelot_write(ocelot, mach, ANA_TABLES_MACHDATA);
85
86 }
87
88 static int ocelot_mact_learn(struct ocelot *ocelot, int port,
89 const unsigned char mac[ETH_ALEN],
90 unsigned int vid,
91 enum macaccess_entry_type type)
92 {
93 ocelot_mact_select(ocelot, mac, vid);
94
95 /* Issue a write command */
96 ocelot_write(ocelot, ANA_TABLES_MACACCESS_VALID |
97 ANA_TABLES_MACACCESS_DEST_IDX(port) |
98 ANA_TABLES_MACACCESS_ENTRYTYPE(type) |
99 ANA_TABLES_MACACCESS_MAC_TABLE_CMD(MACACCESS_CMD_LEARN),
100 ANA_TABLES_MACACCESS);
101
102 return ocelot_mact_wait_for_completion(ocelot);
103 }
104
105 static int ocelot_mact_forget(struct ocelot *ocelot,
106 const unsigned char mac[ETH_ALEN],
107 unsigned int vid)
108 {
109 ocelot_mact_select(ocelot, mac, vid);
110
111 /* Issue a forget command */
112 ocelot_write(ocelot,
113 ANA_TABLES_MACACCESS_MAC_TABLE_CMD(MACACCESS_CMD_FORGET),
114 ANA_TABLES_MACACCESS);
115
116 return ocelot_mact_wait_for_completion(ocelot);
117 }
118
119 static void ocelot_mact_init(struct ocelot *ocelot)
120 {
121 /* Configure the learning mode entries attributes:
122 * - Do not copy the frame to the CPU extraction queues.
123 * - Use the vlan and mac_cpoy for dmac lookup.
124 */
125 ocelot_rmw(ocelot, 0,
126 ANA_AGENCTRL_LEARN_CPU_COPY | ANA_AGENCTRL_IGNORE_DMAC_FLAGS
127 | ANA_AGENCTRL_LEARN_FWD_KILL
128 | ANA_AGENCTRL_LEARN_IGNORE_VLAN,
129 ANA_AGENCTRL);
130
131 /* Clear the MAC table */
132 ocelot_write(ocelot, MACACCESS_CMD_INIT, ANA_TABLES_MACACCESS);
133 }
134
135 static void ocelot_vcap_enable(struct ocelot *ocelot, int port)
136 {
137 ocelot_write_gix(ocelot, ANA_PORT_VCAP_S2_CFG_S2_ENA |
138 ANA_PORT_VCAP_S2_CFG_S2_IP6_CFG(0xa),
139 ANA_PORT_VCAP_S2_CFG, port);
140 }
141
142 static inline u32 ocelot_vlant_read_vlanaccess(struct ocelot *ocelot)
143 {
144 return ocelot_read(ocelot, ANA_TABLES_VLANACCESS);
145 }
146
147 static inline int ocelot_vlant_wait_for_completion(struct ocelot *ocelot)
148 {
149 u32 val;
150
151 return readx_poll_timeout(ocelot_vlant_read_vlanaccess,
152 ocelot,
153 val,
154 (val & ANA_TABLES_VLANACCESS_VLAN_TBL_CMD_M) ==
155 ANA_TABLES_VLANACCESS_CMD_IDLE,
156 TABLE_UPDATE_SLEEP_US, TABLE_UPDATE_TIMEOUT_US);
157 }
158
159 static int ocelot_vlant_set_mask(struct ocelot *ocelot, u16 vid, u32 mask)
160 {
161 /* Select the VID to configure */
162 ocelot_write(ocelot, ANA_TABLES_VLANTIDX_V_INDEX(vid),
163 ANA_TABLES_VLANTIDX);
164 /* Set the vlan port members mask and issue a write command */
165 ocelot_write(ocelot, ANA_TABLES_VLANACCESS_VLAN_PORT_MASK(mask) |
166 ANA_TABLES_VLANACCESS_CMD_WRITE,
167 ANA_TABLES_VLANACCESS);
168
169 return ocelot_vlant_wait_for_completion(ocelot);
170 }
171
172 static void ocelot_vlan_mode(struct ocelot *ocelot, int port,
173 netdev_features_t features)
174 {
175 u32 val;
176
177 /* Filtering */
178 val = ocelot_read(ocelot, ANA_VLANMASK);
179 if (features & NETIF_F_HW_VLAN_CTAG_FILTER)
180 val |= BIT(port);
181 else
182 val &= ~BIT(port);
183 ocelot_write(ocelot, val, ANA_VLANMASK);
184 }
185
186 static int ocelot_port_set_native_vlan(struct ocelot *ocelot, int port,
187 u16 vid)
188 {
189 struct ocelot_port *ocelot_port = ocelot->ports[port];
190 u32 val = 0;
191
192 if (ocelot_port->vid != vid) {
193 /* Always permit deleting the native VLAN (vid = 0) */
194 if (ocelot_port->vid && vid) {
195 dev_err(ocelot->dev,
196 "Port already has a native VLAN: %d\n",
197 ocelot_port->vid);
198 return -EBUSY;
199 }
200 ocelot_port->vid = vid;
201 }
202
203 ocelot_rmw_gix(ocelot, REW_PORT_VLAN_CFG_PORT_VID(vid),
204 REW_PORT_VLAN_CFG_PORT_VID_M,
205 REW_PORT_VLAN_CFG, port);
206
207 if (ocelot_port->vlan_aware && !ocelot_port->vid)
208 /* If port is vlan-aware and tagged, drop untagged and priority
209 * tagged frames.
210 */
211 val = ANA_PORT_DROP_CFG_DROP_UNTAGGED_ENA |
212 ANA_PORT_DROP_CFG_DROP_PRIO_S_TAGGED_ENA |
213 ANA_PORT_DROP_CFG_DROP_PRIO_C_TAGGED_ENA;
214 ocelot_rmw_gix(ocelot, val,
215 ANA_PORT_DROP_CFG_DROP_UNTAGGED_ENA |
216 ANA_PORT_DROP_CFG_DROP_PRIO_S_TAGGED_ENA |
217 ANA_PORT_DROP_CFG_DROP_PRIO_C_TAGGED_ENA,
218 ANA_PORT_DROP_CFG, port);
219
220 if (ocelot_port->vlan_aware) {
221 if (ocelot_port->vid)
222 /* Tag all frames except when VID == DEFAULT_VLAN */
223 val = REW_TAG_CFG_TAG_CFG(1);
224 else
225 /* Tag all frames */
226 val = REW_TAG_CFG_TAG_CFG(3);
227 } else {
228 /* Port tagging disabled. */
229 val = REW_TAG_CFG_TAG_CFG(0);
230 }
231 ocelot_rmw_gix(ocelot, val,
232 REW_TAG_CFG_TAG_CFG_M,
233 REW_TAG_CFG, port);
234
235 return 0;
236 }
237
238 void ocelot_port_vlan_filtering(struct ocelot *ocelot, int port,
239 bool vlan_aware)
240 {
241 struct ocelot_port *ocelot_port = ocelot->ports[port];
242 u32 val;
243
244 ocelot_port->vlan_aware = vlan_aware;
245
246 if (vlan_aware)
247 val = ANA_PORT_VLAN_CFG_VLAN_AWARE_ENA |
248 ANA_PORT_VLAN_CFG_VLAN_POP_CNT(1);
249 else
250 val = 0;
251 ocelot_rmw_gix(ocelot, val,
252 ANA_PORT_VLAN_CFG_VLAN_AWARE_ENA |
253 ANA_PORT_VLAN_CFG_VLAN_POP_CNT_M,
254 ANA_PORT_VLAN_CFG, port);
255
256 ocelot_port_set_native_vlan(ocelot, port, ocelot_port->vid);
257 }
258 EXPORT_SYMBOL(ocelot_port_vlan_filtering);
259
260 /* Default vlan to clasify for untagged frames (may be zero) */
261 static void ocelot_port_set_pvid(struct ocelot *ocelot, int port, u16 pvid)
262 {
263 struct ocelot_port *ocelot_port = ocelot->ports[port];
264
265 ocelot_rmw_gix(ocelot,
266 ANA_PORT_VLAN_CFG_VLAN_VID(pvid),
267 ANA_PORT_VLAN_CFG_VLAN_VID_M,
268 ANA_PORT_VLAN_CFG, port);
269
270 ocelot_port->pvid = pvid;
271 }
272
273 int ocelot_vlan_add(struct ocelot *ocelot, int port, u16 vid, bool pvid,
274 bool untagged)
275 {
276 int ret;
277
278 /* Make the port a member of the VLAN */
279 ocelot->vlan_mask[vid] |= BIT(port);
280 ret = ocelot_vlant_set_mask(ocelot, vid, ocelot->vlan_mask[vid]);
281 if (ret)
282 return ret;
283
284 /* Default ingress vlan classification */
285 if (pvid)
286 ocelot_port_set_pvid(ocelot, port, vid);
287
288 /* Untagged egress vlan clasification */
289 if (untagged) {
290 ret = ocelot_port_set_native_vlan(ocelot, port, vid);
291 if (ret)
292 return ret;
293 }
294
295 return 0;
296 }
297 EXPORT_SYMBOL(ocelot_vlan_add);
298
299 static int ocelot_vlan_vid_add(struct net_device *dev, u16 vid, bool pvid,
300 bool untagged)
301 {
302 struct ocelot_port_private *priv = netdev_priv(dev);
303 struct ocelot_port *ocelot_port = &priv->port;
304 struct ocelot *ocelot = ocelot_port->ocelot;
305 int port = priv->chip_port;
306 int ret;
307
308 ret = ocelot_vlan_add(ocelot, port, vid, pvid, untagged);
309 if (ret)
310 return ret;
311
312 /* Add the port MAC address to with the right VLAN information */
313 ocelot_mact_learn(ocelot, PGID_CPU, dev->dev_addr, vid,
314 ENTRYTYPE_LOCKED);
315
316 return 0;
317 }
318
319 int ocelot_vlan_del(struct ocelot *ocelot, int port, u16 vid)
320 {
321 struct ocelot_port *ocelot_port = ocelot->ports[port];
322 int ret;
323
324 /* Stop the port from being a member of the vlan */
325 ocelot->vlan_mask[vid] &= ~BIT(port);
326 ret = ocelot_vlant_set_mask(ocelot, vid, ocelot->vlan_mask[vid]);
327 if (ret)
328 return ret;
329
330 /* Ingress */
331 if (ocelot_port->pvid == vid)
332 ocelot_port_set_pvid(ocelot, port, 0);
333
334 /* Egress */
335 if (ocelot_port->vid == vid)
336 ocelot_port_set_native_vlan(ocelot, port, 0);
337
338 return 0;
339 }
340 EXPORT_SYMBOL(ocelot_vlan_del);
341
342 static int ocelot_vlan_vid_del(struct net_device *dev, u16 vid)
343 {
344 struct ocelot_port_private *priv = netdev_priv(dev);
345 struct ocelot *ocelot = priv->port.ocelot;
346 int port = priv->chip_port;
347 int ret;
348
349 /* 8021q removes VID 0 on module unload for all interfaces
350 * with VLAN filtering feature. We need to keep it to receive
351 * untagged traffic.
352 */
353 if (vid == 0)
354 return 0;
355
356 ret = ocelot_vlan_del(ocelot, port, vid);
357 if (ret)
358 return ret;
359
360 /* Del the port MAC address to with the right VLAN information */
361 ocelot_mact_forget(ocelot, dev->dev_addr, vid);
362
363 return 0;
364 }
365
366 static void ocelot_vlan_init(struct ocelot *ocelot)
367 {
368 u16 port, vid;
369
370 /* Clear VLAN table, by default all ports are members of all VLANs */
371 ocelot_write(ocelot, ANA_TABLES_VLANACCESS_CMD_INIT,
372 ANA_TABLES_VLANACCESS);
373 ocelot_vlant_wait_for_completion(ocelot);
374
375 /* Configure the port VLAN memberships */
376 for (vid = 1; vid < VLAN_N_VID; vid++) {
377 ocelot->vlan_mask[vid] = 0;
378 ocelot_vlant_set_mask(ocelot, vid, ocelot->vlan_mask[vid]);
379 }
380
381 /* Because VLAN filtering is enabled, we need VID 0 to get untagged
382 * traffic. It is added automatically if 8021q module is loaded, but
383 * we can't rely on it since module may be not loaded.
384 */
385 ocelot->vlan_mask[0] = GENMASK(ocelot->num_phys_ports - 1, 0);
386 ocelot_vlant_set_mask(ocelot, 0, ocelot->vlan_mask[0]);
387
388 /* Set vlan ingress filter mask to all ports but the CPU port by
389 * default.
390 */
391 ocelot_write(ocelot, GENMASK(ocelot->num_phys_ports - 1, 0),
392 ANA_VLANMASK);
393
394 for (port = 0; port < ocelot->num_phys_ports; port++) {
395 ocelot_write_gix(ocelot, 0, REW_PORT_VLAN_CFG, port);
396 ocelot_write_gix(ocelot, 0, REW_TAG_CFG, port);
397 }
398 }
399
400 /* Watermark encode
401 * Bit 8: Unit; 0:1, 1:16
402 * Bit 7-0: Value to be multiplied with unit
403 */
404 static u16 ocelot_wm_enc(u16 value)
405 {
406 if (value >= BIT(8))
407 return BIT(8) | (value / 16);
408
409 return value;
410 }
411
412 void ocelot_adjust_link(struct ocelot *ocelot, int port,
413 struct phy_device *phydev)
414 {
415 struct ocelot_port *ocelot_port = ocelot->ports[port];
416 int speed, mode = 0;
417
418 switch (phydev->speed) {
419 case SPEED_10:
420 speed = OCELOT_SPEED_10;
421 break;
422 case SPEED_100:
423 speed = OCELOT_SPEED_100;
424 break;
425 case SPEED_1000:
426 speed = OCELOT_SPEED_1000;
427 mode = DEV_MAC_MODE_CFG_GIGA_MODE_ENA;
428 break;
429 case SPEED_2500:
430 speed = OCELOT_SPEED_2500;
431 mode = DEV_MAC_MODE_CFG_GIGA_MODE_ENA;
432 break;
433 default:
434 dev_err(ocelot->dev, "Unsupported PHY speed on port %d: %d\n",
435 port, phydev->speed);
436 return;
437 }
438
439 phy_print_status(phydev);
440
441 if (!phydev->link)
442 return;
443
444 /* Only full duplex supported for now */
445 ocelot_port_writel(ocelot_port, DEV_MAC_MODE_CFG_FDX_ENA |
446 mode, DEV_MAC_MODE_CFG);
447
448 /* Disable HDX fast control */
449 ocelot_port_writel(ocelot_port, DEV_PORT_MISC_HDX_FAST_DIS,
450 DEV_PORT_MISC);
451
452 /* SGMII only for now */
453 ocelot_port_writel(ocelot_port, PCS1G_MODE_CFG_SGMII_MODE_ENA,
454 PCS1G_MODE_CFG);
455 ocelot_port_writel(ocelot_port, PCS1G_SD_CFG_SD_SEL, PCS1G_SD_CFG);
456
457 /* Enable PCS */
458 ocelot_port_writel(ocelot_port, PCS1G_CFG_PCS_ENA, PCS1G_CFG);
459
460 /* No aneg on SGMII */
461 ocelot_port_writel(ocelot_port, 0, PCS1G_ANEG_CFG);
462
463 /* No loopback */
464 ocelot_port_writel(ocelot_port, 0, PCS1G_LB_CFG);
465
466 /* Enable MAC module */
467 ocelot_port_writel(ocelot_port, DEV_MAC_ENA_CFG_RX_ENA |
468 DEV_MAC_ENA_CFG_TX_ENA, DEV_MAC_ENA_CFG);
469
470 /* Take MAC, Port, Phy (intern) and PCS (SGMII/Serdes) clock out of
471 * reset */
472 ocelot_port_writel(ocelot_port, DEV_CLOCK_CFG_LINK_SPEED(speed),
473 DEV_CLOCK_CFG);
474
475 /* No PFC */
476 ocelot_write_gix(ocelot, ANA_PFC_PFC_CFG_FC_LINK_SPEED(speed),
477 ANA_PFC_PFC_CFG, port);
478
479 /* Core: Enable port for frame transfer */
480 ocelot_write_rix(ocelot, QSYS_SWITCH_PORT_MODE_INGRESS_DROP_MODE |
481 QSYS_SWITCH_PORT_MODE_SCH_NEXT_CFG(1) |
482 QSYS_SWITCH_PORT_MODE_PORT_ENA,
483 QSYS_SWITCH_PORT_MODE, port);
484
485 /* Flow control */
486 ocelot_write_rix(ocelot, SYS_MAC_FC_CFG_PAUSE_VAL_CFG(0xffff) |
487 SYS_MAC_FC_CFG_RX_FC_ENA | SYS_MAC_FC_CFG_TX_FC_ENA |
488 SYS_MAC_FC_CFG_ZERO_PAUSE_ENA |
489 SYS_MAC_FC_CFG_FC_LATENCY_CFG(0x7) |
490 SYS_MAC_FC_CFG_FC_LINK_SPEED(speed),
491 SYS_MAC_FC_CFG, port);
492 ocelot_write_rix(ocelot, 0, ANA_POL_FLOWC, port);
493 }
494 EXPORT_SYMBOL(ocelot_adjust_link);
495
496 static void ocelot_port_adjust_link(struct net_device *dev)
497 {
498 struct ocelot_port_private *priv = netdev_priv(dev);
499 struct ocelot *ocelot = priv->port.ocelot;
500 int port = priv->chip_port;
501
502 ocelot_adjust_link(ocelot, port, dev->phydev);
503 }
504
505 void ocelot_port_enable(struct ocelot *ocelot, int port,
506 struct phy_device *phy)
507 {
508 /* Enable receiving frames on the port, and activate auto-learning of
509 * MAC addresses.
510 */
511 ocelot_write_gix(ocelot, ANA_PORT_PORT_CFG_LEARNAUTO |
512 ANA_PORT_PORT_CFG_RECV_ENA |
513 ANA_PORT_PORT_CFG_PORTID_VAL(port),
514 ANA_PORT_PORT_CFG, port);
515 }
516 EXPORT_SYMBOL(ocelot_port_enable);
517
518 static int ocelot_port_open(struct net_device *dev)
519 {
520 struct ocelot_port_private *priv = netdev_priv(dev);
521 struct ocelot_port *ocelot_port = &priv->port;
522 struct ocelot *ocelot = ocelot_port->ocelot;
523 int port = priv->chip_port;
524 int err;
525
526 if (priv->serdes) {
527 err = phy_set_mode_ext(priv->serdes, PHY_MODE_ETHERNET,
528 ocelot_port->phy_mode);
529 if (err) {
530 netdev_err(dev, "Could not set mode of SerDes\n");
531 return err;
532 }
533 }
534
535 err = phy_connect_direct(dev, priv->phy, &ocelot_port_adjust_link,
536 ocelot_port->phy_mode);
537 if (err) {
538 netdev_err(dev, "Could not attach to PHY\n");
539 return err;
540 }
541
542 dev->phydev = priv->phy;
543
544 phy_attached_info(priv->phy);
545 phy_start(priv->phy);
546
547 ocelot_port_enable(ocelot, port, priv->phy);
548
549 return 0;
550 }
551
552 void ocelot_port_disable(struct ocelot *ocelot, int port)
553 {
554 struct ocelot_port *ocelot_port = ocelot->ports[port];
555
556 ocelot_port_writel(ocelot_port, 0, DEV_MAC_ENA_CFG);
557 ocelot_rmw_rix(ocelot, 0, QSYS_SWITCH_PORT_MODE_PORT_ENA,
558 QSYS_SWITCH_PORT_MODE, port);
559 }
560 EXPORT_SYMBOL(ocelot_port_disable);
561
562 static int ocelot_port_stop(struct net_device *dev)
563 {
564 struct ocelot_port_private *priv = netdev_priv(dev);
565 struct ocelot *ocelot = priv->port.ocelot;
566 int port = priv->chip_port;
567
568 phy_disconnect(priv->phy);
569
570 dev->phydev = NULL;
571
572 ocelot_port_disable(ocelot, port);
573
574 return 0;
575 }
576
577 /* Generate the IFH for frame injection
578 *
579 * The IFH is a 128bit-value
580 * bit 127: bypass the analyzer processing
581 * bit 56-67: destination mask
582 * bit 28-29: pop_cnt: 3 disables all rewriting of the frame
583 * bit 20-27: cpu extraction queue mask
584 * bit 16: tag type 0: C-tag, 1: S-tag
585 * bit 0-11: VID
586 */
587 static int ocelot_gen_ifh(u32 *ifh, struct frame_info *info)
588 {
589 ifh[0] = IFH_INJ_BYPASS | ((0x1ff & info->rew_op) << 21);
590 ifh[1] = (0xf00 & info->port) >> 8;
591 ifh[2] = (0xff & info->port) << 24;
592 ifh[3] = (info->tag_type << 16) | info->vid;
593
594 return 0;
595 }
596
597 int ocelot_port_add_txtstamp_skb(struct ocelot_port *ocelot_port,
598 struct sk_buff *skb)
599 {
600 struct skb_shared_info *shinfo = skb_shinfo(skb);
601 struct ocelot *ocelot = ocelot_port->ocelot;
602
603 if (ocelot->ptp && shinfo->tx_flags & SKBTX_HW_TSTAMP &&
604 ocelot_port->ptp_cmd == IFH_REW_OP_TWO_STEP_PTP) {
605 shinfo->tx_flags |= SKBTX_IN_PROGRESS;
606 /* Store timestamp ID in cb[0] of sk_buff */
607 skb->cb[0] = ocelot_port->ts_id % 4;
608 skb_queue_tail(&ocelot_port->tx_skbs, skb);
609 return 0;
610 }
611 return -ENODATA;
612 }
613 EXPORT_SYMBOL(ocelot_port_add_txtstamp_skb);
614
615 static int ocelot_port_xmit(struct sk_buff *skb, struct net_device *dev)
616 {
617 struct ocelot_port_private *priv = netdev_priv(dev);
618 struct skb_shared_info *shinfo = skb_shinfo(skb);
619 struct ocelot_port *ocelot_port = &priv->port;
620 struct ocelot *ocelot = ocelot_port->ocelot;
621 u32 val, ifh[OCELOT_TAG_LEN / 4];
622 struct frame_info info = {};
623 u8 grp = 0; /* Send everything on CPU group 0 */
624 unsigned int i, count, last;
625 int port = priv->chip_port;
626
627 val = ocelot_read(ocelot, QS_INJ_STATUS);
628 if (!(val & QS_INJ_STATUS_FIFO_RDY(BIT(grp))) ||
629 (val & QS_INJ_STATUS_WMARK_REACHED(BIT(grp))))
630 return NETDEV_TX_BUSY;
631
632 ocelot_write_rix(ocelot, QS_INJ_CTRL_GAP_SIZE(1) |
633 QS_INJ_CTRL_SOF, QS_INJ_CTRL, grp);
634
635 info.port = BIT(port);
636 info.tag_type = IFH_TAG_TYPE_C;
637 info.vid = skb_vlan_tag_get(skb);
638
639 /* Check if timestamping is needed */
640 if (ocelot->ptp && shinfo->tx_flags & SKBTX_HW_TSTAMP) {
641 info.rew_op = ocelot_port->ptp_cmd;
642 if (ocelot_port->ptp_cmd == IFH_REW_OP_TWO_STEP_PTP)
643 info.rew_op |= (ocelot_port->ts_id % 4) << 3;
644 }
645
646 ocelot_gen_ifh(ifh, &info);
647
648 for (i = 0; i < OCELOT_TAG_LEN / 4; i++)
649 ocelot_write_rix(ocelot, (__force u32)cpu_to_be32(ifh[i]),
650 QS_INJ_WR, grp);
651
652 count = (skb->len + 3) / 4;
653 last = skb->len % 4;
654 for (i = 0; i < count; i++) {
655 ocelot_write_rix(ocelot, ((u32 *)skb->data)[i], QS_INJ_WR, grp);
656 }
657
658 /* Add padding */
659 while (i < (OCELOT_BUFFER_CELL_SZ / 4)) {
660 ocelot_write_rix(ocelot, 0, QS_INJ_WR, grp);
661 i++;
662 }
663
664 /* Indicate EOF and valid bytes in last word */
665 ocelot_write_rix(ocelot, QS_INJ_CTRL_GAP_SIZE(1) |
666 QS_INJ_CTRL_VLD_BYTES(skb->len < OCELOT_BUFFER_CELL_SZ ? 0 : last) |
667 QS_INJ_CTRL_EOF,
668 QS_INJ_CTRL, grp);
669
670 /* Add dummy CRC */
671 ocelot_write_rix(ocelot, 0, QS_INJ_WR, grp);
672 skb_tx_timestamp(skb);
673
674 dev->stats.tx_packets++;
675 dev->stats.tx_bytes += skb->len;
676
677 if (!ocelot_port_add_txtstamp_skb(ocelot_port, skb)) {
678 ocelot_port->ts_id++;
679 return NETDEV_TX_OK;
680 }
681
682 dev_kfree_skb_any(skb);
683 return NETDEV_TX_OK;
684 }
685
686 static void ocelot_get_hwtimestamp(struct ocelot *ocelot,
687 struct timespec64 *ts)
688 {
689 unsigned long flags;
690 u32 val;
691
692 spin_lock_irqsave(&ocelot->ptp_clock_lock, flags);
693
694 /* Read current PTP time to get seconds */
695 val = ocelot_read_rix(ocelot, PTP_PIN_CFG, TOD_ACC_PIN);
696
697 val &= ~(PTP_PIN_CFG_SYNC | PTP_PIN_CFG_ACTION_MASK | PTP_PIN_CFG_DOM);
698 val |= PTP_PIN_CFG_ACTION(PTP_PIN_ACTION_SAVE);
699 ocelot_write_rix(ocelot, val, PTP_PIN_CFG, TOD_ACC_PIN);
700 ts->tv_sec = ocelot_read_rix(ocelot, PTP_PIN_TOD_SEC_LSB, TOD_ACC_PIN);
701
702 /* Read packet HW timestamp from FIFO */
703 val = ocelot_read(ocelot, SYS_PTP_TXSTAMP);
704 ts->tv_nsec = SYS_PTP_TXSTAMP_PTP_TXSTAMP(val);
705
706 /* Sec has incremented since the ts was registered */
707 if ((ts->tv_sec & 0x1) != !!(val & SYS_PTP_TXSTAMP_PTP_TXSTAMP_SEC))
708 ts->tv_sec--;
709
710 spin_unlock_irqrestore(&ocelot->ptp_clock_lock, flags);
711 }
712
713 void ocelot_get_txtstamp(struct ocelot *ocelot)
714 {
715 int budget = OCELOT_PTP_QUEUE_SZ;
716
717 while (budget--) {
718 struct sk_buff *skb, *skb_tmp, *skb_match = NULL;
719 struct skb_shared_hwtstamps shhwtstamps;
720 struct ocelot_port *port;
721 struct timespec64 ts;
722 unsigned long flags;
723 u32 val, id, txport;
724
725 val = ocelot_read(ocelot, SYS_PTP_STATUS);
726
727 /* Check if a timestamp can be retrieved */
728 if (!(val & SYS_PTP_STATUS_PTP_MESS_VLD))
729 break;
730
731 WARN_ON(val & SYS_PTP_STATUS_PTP_OVFL);
732
733 /* Retrieve the ts ID and Tx port */
734 id = SYS_PTP_STATUS_PTP_MESS_ID_X(val);
735 txport = SYS_PTP_STATUS_PTP_MESS_TXPORT_X(val);
736
737 /* Retrieve its associated skb */
738 port = ocelot->ports[txport];
739
740 spin_lock_irqsave(&port->tx_skbs.lock, flags);
741
742 skb_queue_walk_safe(&port->tx_skbs, skb, skb_tmp) {
743 if (skb->cb[0] != id)
744 continue;
745 __skb_unlink(skb, &port->tx_skbs);
746 skb_match = skb;
747 break;
748 }
749
750 spin_unlock_irqrestore(&port->tx_skbs.lock, flags);
751
752 /* Next ts */
753 ocelot_write(ocelot, SYS_PTP_NXT_PTP_NXT, SYS_PTP_NXT);
754
755 if (unlikely(!skb_match))
756 continue;
757
758 /* Get the h/w timestamp */
759 ocelot_get_hwtimestamp(ocelot, &ts);
760
761 /* Set the timestamp into the skb */
762 memset(&shhwtstamps, 0, sizeof(shhwtstamps));
763 shhwtstamps.hwtstamp = ktime_set(ts.tv_sec, ts.tv_nsec);
764 skb_tstamp_tx(skb_match, &shhwtstamps);
765
766 dev_kfree_skb_any(skb_match);
767 }
768 }
769 EXPORT_SYMBOL(ocelot_get_txtstamp);
770
771 static int ocelot_mc_unsync(struct net_device *dev, const unsigned char *addr)
772 {
773 struct ocelot_port_private *priv = netdev_priv(dev);
774 struct ocelot_port *ocelot_port = &priv->port;
775 struct ocelot *ocelot = ocelot_port->ocelot;
776
777 return ocelot_mact_forget(ocelot, addr, ocelot_port->pvid);
778 }
779
780 static int ocelot_mc_sync(struct net_device *dev, const unsigned char *addr)
781 {
782 struct ocelot_port_private *priv = netdev_priv(dev);
783 struct ocelot_port *ocelot_port = &priv->port;
784 struct ocelot *ocelot = ocelot_port->ocelot;
785
786 return ocelot_mact_learn(ocelot, PGID_CPU, addr, ocelot_port->pvid,
787 ENTRYTYPE_LOCKED);
788 }
789
790 static void ocelot_set_rx_mode(struct net_device *dev)
791 {
792 struct ocelot_port_private *priv = netdev_priv(dev);
793 struct ocelot *ocelot = priv->port.ocelot;
794 u32 val;
795 int i;
796
797 /* This doesn't handle promiscuous mode because the bridge core is
798 * setting IFF_PROMISC on all slave interfaces and all frames would be
799 * forwarded to the CPU port.
800 */
801 val = GENMASK(ocelot->num_phys_ports - 1, 0);
802 for (i = ocelot->num_phys_ports + 1; i < PGID_CPU; i++)
803 ocelot_write_rix(ocelot, val, ANA_PGID_PGID, i);
804
805 __dev_mc_sync(dev, ocelot_mc_sync, ocelot_mc_unsync);
806 }
807
808 static int ocelot_port_get_phys_port_name(struct net_device *dev,
809 char *buf, size_t len)
810 {
811 struct ocelot_port_private *priv = netdev_priv(dev);
812 int port = priv->chip_port;
813 int ret;
814
815 ret = snprintf(buf, len, "p%d", port);
816 if (ret >= len)
817 return -EINVAL;
818
819 return 0;
820 }
821
822 static int ocelot_port_set_mac_address(struct net_device *dev, void *p)
823 {
824 struct ocelot_port_private *priv = netdev_priv(dev);
825 struct ocelot_port *ocelot_port = &priv->port;
826 struct ocelot *ocelot = ocelot_port->ocelot;
827 const struct sockaddr *addr = p;
828
829 /* Learn the new net device MAC address in the mac table. */
830 ocelot_mact_learn(ocelot, PGID_CPU, addr->sa_data, ocelot_port->pvid,
831 ENTRYTYPE_LOCKED);
832 /* Then forget the previous one. */
833 ocelot_mact_forget(ocelot, dev->dev_addr, ocelot_port->pvid);
834
835 ether_addr_copy(dev->dev_addr, addr->sa_data);
836 return 0;
837 }
838
839 static void ocelot_get_stats64(struct net_device *dev,
840 struct rtnl_link_stats64 *stats)
841 {
842 struct ocelot_port_private *priv = netdev_priv(dev);
843 struct ocelot *ocelot = priv->port.ocelot;
844 int port = priv->chip_port;
845
846 /* Configure the port to read the stats from */
847 ocelot_write(ocelot, SYS_STAT_CFG_STAT_VIEW(port),
848 SYS_STAT_CFG);
849
850 /* Get Rx stats */
851 stats->rx_bytes = ocelot_read(ocelot, SYS_COUNT_RX_OCTETS);
852 stats->rx_packets = ocelot_read(ocelot, SYS_COUNT_RX_SHORTS) +
853 ocelot_read(ocelot, SYS_COUNT_RX_FRAGMENTS) +
854 ocelot_read(ocelot, SYS_COUNT_RX_JABBERS) +
855 ocelot_read(ocelot, SYS_COUNT_RX_LONGS) +
856 ocelot_read(ocelot, SYS_COUNT_RX_64) +
857 ocelot_read(ocelot, SYS_COUNT_RX_65_127) +
858 ocelot_read(ocelot, SYS_COUNT_RX_128_255) +
859 ocelot_read(ocelot, SYS_COUNT_RX_256_1023) +
860 ocelot_read(ocelot, SYS_COUNT_RX_1024_1526) +
861 ocelot_read(ocelot, SYS_COUNT_RX_1527_MAX);
862 stats->multicast = ocelot_read(ocelot, SYS_COUNT_RX_MULTICAST);
863 stats->rx_dropped = dev->stats.rx_dropped;
864
865 /* Get Tx stats */
866 stats->tx_bytes = ocelot_read(ocelot, SYS_COUNT_TX_OCTETS);
867 stats->tx_packets = ocelot_read(ocelot, SYS_COUNT_TX_64) +
868 ocelot_read(ocelot, SYS_COUNT_TX_65_127) +
869 ocelot_read(ocelot, SYS_COUNT_TX_128_511) +
870 ocelot_read(ocelot, SYS_COUNT_TX_512_1023) +
871 ocelot_read(ocelot, SYS_COUNT_TX_1024_1526) +
872 ocelot_read(ocelot, SYS_COUNT_TX_1527_MAX);
873 stats->tx_dropped = ocelot_read(ocelot, SYS_COUNT_TX_DROPS) +
874 ocelot_read(ocelot, SYS_COUNT_TX_AGING);
875 stats->collisions = ocelot_read(ocelot, SYS_COUNT_TX_COLLISION);
876 }
877
878 int ocelot_fdb_add(struct ocelot *ocelot, int port,
879 const unsigned char *addr, u16 vid)
880 {
881 struct ocelot_port *ocelot_port = ocelot->ports[port];
882
883 if (!vid) {
884 if (!ocelot_port->vlan_aware)
885 /* If the bridge is not VLAN aware and no VID was
886 * provided, set it to pvid to ensure the MAC entry
887 * matches incoming untagged packets
888 */
889 vid = ocelot_port->pvid;
890 else
891 /* If the bridge is VLAN aware a VID must be provided as
892 * otherwise the learnt entry wouldn't match any frame.
893 */
894 return -EINVAL;
895 }
896
897 return ocelot_mact_learn(ocelot, port, addr, vid, ENTRYTYPE_LOCKED);
898 }
899 EXPORT_SYMBOL(ocelot_fdb_add);
900
901 static int ocelot_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
902 struct net_device *dev,
903 const unsigned char *addr,
904 u16 vid, u16 flags,
905 struct netlink_ext_ack *extack)
906 {
907 struct ocelot_port_private *priv = netdev_priv(dev);
908 struct ocelot *ocelot = priv->port.ocelot;
909 int port = priv->chip_port;
910
911 return ocelot_fdb_add(ocelot, port, addr, vid);
912 }
913
914 int ocelot_fdb_del(struct ocelot *ocelot, int port,
915 const unsigned char *addr, u16 vid)
916 {
917 return ocelot_mact_forget(ocelot, addr, vid);
918 }
919 EXPORT_SYMBOL(ocelot_fdb_del);
920
921 static int ocelot_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
922 struct net_device *dev,
923 const unsigned char *addr, u16 vid)
924 {
925 struct ocelot_port_private *priv = netdev_priv(dev);
926 struct ocelot *ocelot = priv->port.ocelot;
927 int port = priv->chip_port;
928
929 return ocelot_fdb_del(ocelot, port, addr, vid);
930 }
931
932 struct ocelot_dump_ctx {
933 struct net_device *dev;
934 struct sk_buff *skb;
935 struct netlink_callback *cb;
936 int idx;
937 };
938
939 static int ocelot_port_fdb_do_dump(const unsigned char *addr, u16 vid,
940 bool is_static, void *data)
941 {
942 struct ocelot_dump_ctx *dump = data;
943 u32 portid = NETLINK_CB(dump->cb->skb).portid;
944 u32 seq = dump->cb->nlh->nlmsg_seq;
945 struct nlmsghdr *nlh;
946 struct ndmsg *ndm;
947
948 if (dump->idx < dump->cb->args[2])
949 goto skip;
950
951 nlh = nlmsg_put(dump->skb, portid, seq, RTM_NEWNEIGH,
952 sizeof(*ndm), NLM_F_MULTI);
953 if (!nlh)
954 return -EMSGSIZE;
955
956 ndm = nlmsg_data(nlh);
957 ndm->ndm_family = AF_BRIDGE;
958 ndm->ndm_pad1 = 0;
959 ndm->ndm_pad2 = 0;
960 ndm->ndm_flags = NTF_SELF;
961 ndm->ndm_type = 0;
962 ndm->ndm_ifindex = dump->dev->ifindex;
963 ndm->ndm_state = is_static ? NUD_NOARP : NUD_REACHABLE;
964
965 if (nla_put(dump->skb, NDA_LLADDR, ETH_ALEN, addr))
966 goto nla_put_failure;
967
968 if (vid && nla_put_u16(dump->skb, NDA_VLAN, vid))
969 goto nla_put_failure;
970
971 nlmsg_end(dump->skb, nlh);
972
973 skip:
974 dump->idx++;
975 return 0;
976
977 nla_put_failure:
978 nlmsg_cancel(dump->skb, nlh);
979 return -EMSGSIZE;
980 }
981
982 static int ocelot_mact_read(struct ocelot *ocelot, int port, int row, int col,
983 struct ocelot_mact_entry *entry)
984 {
985 u32 val, dst, macl, mach;
986 char mac[ETH_ALEN];
987
988 /* Set row and column to read from */
989 ocelot_field_write(ocelot, ANA_TABLES_MACTINDX_M_INDEX, row);
990 ocelot_field_write(ocelot, ANA_TABLES_MACTINDX_BUCKET, col);
991
992 /* Issue a read command */
993 ocelot_write(ocelot,
994 ANA_TABLES_MACACCESS_MAC_TABLE_CMD(MACACCESS_CMD_READ),
995 ANA_TABLES_MACACCESS);
996
997 if (ocelot_mact_wait_for_completion(ocelot))
998 return -ETIMEDOUT;
999
1000 /* Read the entry flags */
1001 val = ocelot_read(ocelot, ANA_TABLES_MACACCESS);
1002 if (!(val & ANA_TABLES_MACACCESS_VALID))
1003 return -EINVAL;
1004
1005 /* If the entry read has another port configured as its destination,
1006 * do not report it.
1007 */
1008 dst = (val & ANA_TABLES_MACACCESS_DEST_IDX_M) >> 3;
1009 if (dst != port)
1010 return -EINVAL;
1011
1012 /* Get the entry's MAC address and VLAN id */
1013 macl = ocelot_read(ocelot, ANA_TABLES_MACLDATA);
1014 mach = ocelot_read(ocelot, ANA_TABLES_MACHDATA);
1015
1016 mac[0] = (mach >> 8) & 0xff;
1017 mac[1] = (mach >> 0) & 0xff;
1018 mac[2] = (macl >> 24) & 0xff;
1019 mac[3] = (macl >> 16) & 0xff;
1020 mac[4] = (macl >> 8) & 0xff;
1021 mac[5] = (macl >> 0) & 0xff;
1022
1023 entry->vid = (mach >> 16) & 0xfff;
1024 ether_addr_copy(entry->mac, mac);
1025
1026 return 0;
1027 }
1028
1029 int ocelot_fdb_dump(struct ocelot *ocelot, int port,
1030 dsa_fdb_dump_cb_t *cb, void *data)
1031 {
1032 int i, j;
1033
1034 /* Loop through all the mac tables entries. There are 1024 rows of 4
1035 * entries.
1036 */
1037 for (i = 0; i < 1024; i++) {
1038 for (j = 0; j < 4; j++) {
1039 struct ocelot_mact_entry entry;
1040 bool is_static;
1041 int ret;
1042
1043 ret = ocelot_mact_read(ocelot, port, i, j, &entry);
1044 /* If the entry is invalid (wrong port, invalid...),
1045 * skip it.
1046 */
1047 if (ret == -EINVAL)
1048 continue;
1049 else if (ret)
1050 return ret;
1051
1052 is_static = (entry.type == ENTRYTYPE_LOCKED);
1053
1054 ret = cb(entry.mac, entry.vid, is_static, data);
1055 if (ret)
1056 return ret;
1057 }
1058 }
1059
1060 return 0;
1061 }
1062 EXPORT_SYMBOL(ocelot_fdb_dump);
1063
1064 static int ocelot_port_fdb_dump(struct sk_buff *skb,
1065 struct netlink_callback *cb,
1066 struct net_device *dev,
1067 struct net_device *filter_dev, int *idx)
1068 {
1069 struct ocelot_port_private *priv = netdev_priv(dev);
1070 struct ocelot *ocelot = priv->port.ocelot;
1071 struct ocelot_dump_ctx dump = {
1072 .dev = dev,
1073 .skb = skb,
1074 .cb = cb,
1075 .idx = *idx,
1076 };
1077 int port = priv->chip_port;
1078 int ret;
1079
1080 ret = ocelot_fdb_dump(ocelot, port, ocelot_port_fdb_do_dump, &dump);
1081
1082 *idx = dump.idx;
1083
1084 return ret;
1085 }
1086
1087 static int ocelot_vlan_rx_add_vid(struct net_device *dev, __be16 proto,
1088 u16 vid)
1089 {
1090 return ocelot_vlan_vid_add(dev, vid, false, false);
1091 }
1092
1093 static int ocelot_vlan_rx_kill_vid(struct net_device *dev, __be16 proto,
1094 u16 vid)
1095 {
1096 return ocelot_vlan_vid_del(dev, vid);
1097 }
1098
1099 static int ocelot_set_features(struct net_device *dev,
1100 netdev_features_t features)
1101 {
1102 netdev_features_t changed = dev->features ^ features;
1103 struct ocelot_port_private *priv = netdev_priv(dev);
1104 struct ocelot *ocelot = priv->port.ocelot;
1105 int port = priv->chip_port;
1106
1107 if ((dev->features & NETIF_F_HW_TC) > (features & NETIF_F_HW_TC) &&
1108 priv->tc.offload_cnt) {
1109 netdev_err(dev,
1110 "Cannot disable HW TC offload while offloads active\n");
1111 return -EBUSY;
1112 }
1113
1114 if (changed & NETIF_F_HW_VLAN_CTAG_FILTER)
1115 ocelot_vlan_mode(ocelot, port, features);
1116
1117 return 0;
1118 }
1119
1120 static int ocelot_get_port_parent_id(struct net_device *dev,
1121 struct netdev_phys_item_id *ppid)
1122 {
1123 struct ocelot_port_private *priv = netdev_priv(dev);
1124 struct ocelot *ocelot = priv->port.ocelot;
1125
1126 ppid->id_len = sizeof(ocelot->base_mac);
1127 memcpy(&ppid->id, &ocelot->base_mac, ppid->id_len);
1128
1129 return 0;
1130 }
1131
1132 int ocelot_hwstamp_get(struct ocelot *ocelot, int port, struct ifreq *ifr)
1133 {
1134 return copy_to_user(ifr->ifr_data, &ocelot->hwtstamp_config,
1135 sizeof(ocelot->hwtstamp_config)) ? -EFAULT : 0;
1136 }
1137 EXPORT_SYMBOL(ocelot_hwstamp_get);
1138
1139 int ocelot_hwstamp_set(struct ocelot *ocelot, int port, struct ifreq *ifr)
1140 {
1141 struct ocelot_port *ocelot_port = ocelot->ports[port];
1142 struct hwtstamp_config cfg;
1143
1144 if (copy_from_user(&cfg, ifr->ifr_data, sizeof(cfg)))
1145 return -EFAULT;
1146
1147 /* reserved for future extensions */
1148 if (cfg.flags)
1149 return -EINVAL;
1150
1151 /* Tx type sanity check */
1152 switch (cfg.tx_type) {
1153 case HWTSTAMP_TX_ON:
1154 ocelot_port->ptp_cmd = IFH_REW_OP_TWO_STEP_PTP;
1155 break;
1156 case HWTSTAMP_TX_ONESTEP_SYNC:
1157 /* IFH_REW_OP_ONE_STEP_PTP updates the correctional field, we
1158 * need to update the origin time.
1159 */
1160 ocelot_port->ptp_cmd = IFH_REW_OP_ORIGIN_PTP;
1161 break;
1162 case HWTSTAMP_TX_OFF:
1163 ocelot_port->ptp_cmd = 0;
1164 break;
1165 default:
1166 return -ERANGE;
1167 }
1168
1169 mutex_lock(&ocelot->ptp_lock);
1170
1171 switch (cfg.rx_filter) {
1172 case HWTSTAMP_FILTER_NONE:
1173 break;
1174 case HWTSTAMP_FILTER_ALL:
1175 case HWTSTAMP_FILTER_SOME:
1176 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
1177 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
1178 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
1179 case HWTSTAMP_FILTER_NTP_ALL:
1180 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
1181 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
1182 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
1183 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
1184 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
1185 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
1186 case HWTSTAMP_FILTER_PTP_V2_EVENT:
1187 case HWTSTAMP_FILTER_PTP_V2_SYNC:
1188 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
1189 cfg.rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT;
1190 break;
1191 default:
1192 mutex_unlock(&ocelot->ptp_lock);
1193 return -ERANGE;
1194 }
1195
1196 /* Commit back the result & save it */
1197 memcpy(&ocelot->hwtstamp_config, &cfg, sizeof(cfg));
1198 mutex_unlock(&ocelot->ptp_lock);
1199
1200 return copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg)) ? -EFAULT : 0;
1201 }
1202 EXPORT_SYMBOL(ocelot_hwstamp_set);
1203
1204 static int ocelot_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1205 {
1206 struct ocelot_port_private *priv = netdev_priv(dev);
1207 struct ocelot *ocelot = priv->port.ocelot;
1208 int port = priv->chip_port;
1209
1210 /* The function is only used for PTP operations for now */
1211 if (!ocelot->ptp)
1212 return -EOPNOTSUPP;
1213
1214 switch (cmd) {
1215 case SIOCSHWTSTAMP:
1216 return ocelot_hwstamp_set(ocelot, port, ifr);
1217 case SIOCGHWTSTAMP:
1218 return ocelot_hwstamp_get(ocelot, port, ifr);
1219 default:
1220 return -EOPNOTSUPP;
1221 }
1222 }
1223
1224 static const struct net_device_ops ocelot_port_netdev_ops = {
1225 .ndo_open = ocelot_port_open,
1226 .ndo_stop = ocelot_port_stop,
1227 .ndo_start_xmit = ocelot_port_xmit,
1228 .ndo_set_rx_mode = ocelot_set_rx_mode,
1229 .ndo_get_phys_port_name = ocelot_port_get_phys_port_name,
1230 .ndo_set_mac_address = ocelot_port_set_mac_address,
1231 .ndo_get_stats64 = ocelot_get_stats64,
1232 .ndo_fdb_add = ocelot_port_fdb_add,
1233 .ndo_fdb_del = ocelot_port_fdb_del,
1234 .ndo_fdb_dump = ocelot_port_fdb_dump,
1235 .ndo_vlan_rx_add_vid = ocelot_vlan_rx_add_vid,
1236 .ndo_vlan_rx_kill_vid = ocelot_vlan_rx_kill_vid,
1237 .ndo_set_features = ocelot_set_features,
1238 .ndo_get_port_parent_id = ocelot_get_port_parent_id,
1239 .ndo_setup_tc = ocelot_setup_tc,
1240 .ndo_do_ioctl = ocelot_ioctl,
1241 };
1242
1243 void ocelot_get_strings(struct ocelot *ocelot, int port, u32 sset, u8 *data)
1244 {
1245 int i;
1246
1247 if (sset != ETH_SS_STATS)
1248 return;
1249
1250 for (i = 0; i < ocelot->num_stats; i++)
1251 memcpy(data + i * ETH_GSTRING_LEN, ocelot->stats_layout[i].name,
1252 ETH_GSTRING_LEN);
1253 }
1254 EXPORT_SYMBOL(ocelot_get_strings);
1255
1256 static void ocelot_port_get_strings(struct net_device *netdev, u32 sset,
1257 u8 *data)
1258 {
1259 struct ocelot_port_private *priv = netdev_priv(netdev);
1260 struct ocelot *ocelot = priv->port.ocelot;
1261 int port = priv->chip_port;
1262
1263 ocelot_get_strings(ocelot, port, sset, data);
1264 }
1265
1266 static void ocelot_update_stats(struct ocelot *ocelot)
1267 {
1268 int i, j;
1269
1270 mutex_lock(&ocelot->stats_lock);
1271
1272 for (i = 0; i < ocelot->num_phys_ports; i++) {
1273 /* Configure the port to read the stats from */
1274 ocelot_write(ocelot, SYS_STAT_CFG_STAT_VIEW(i), SYS_STAT_CFG);
1275
1276 for (j = 0; j < ocelot->num_stats; j++) {
1277 u32 val;
1278 unsigned int idx = i * ocelot->num_stats + j;
1279
1280 val = ocelot_read_rix(ocelot, SYS_COUNT_RX_OCTETS,
1281 ocelot->stats_layout[j].offset);
1282
1283 if (val < (ocelot->stats[idx] & U32_MAX))
1284 ocelot->stats[idx] += (u64)1 << 32;
1285
1286 ocelot->stats[idx] = (ocelot->stats[idx] &
1287 ~(u64)U32_MAX) + val;
1288 }
1289 }
1290
1291 mutex_unlock(&ocelot->stats_lock);
1292 }
1293
1294 static void ocelot_check_stats_work(struct work_struct *work)
1295 {
1296 struct delayed_work *del_work = to_delayed_work(work);
1297 struct ocelot *ocelot = container_of(del_work, struct ocelot,
1298 stats_work);
1299
1300 ocelot_update_stats(ocelot);
1301
1302 queue_delayed_work(ocelot->stats_queue, &ocelot->stats_work,
1303 OCELOT_STATS_CHECK_DELAY);
1304 }
1305
1306 void ocelot_get_ethtool_stats(struct ocelot *ocelot, int port, u64 *data)
1307 {
1308 int i;
1309
1310 /* check and update now */
1311 ocelot_update_stats(ocelot);
1312
1313 /* Copy all counters */
1314 for (i = 0; i < ocelot->num_stats; i++)
1315 *data++ = ocelot->stats[port * ocelot->num_stats + i];
1316 }
1317 EXPORT_SYMBOL(ocelot_get_ethtool_stats);
1318
1319 static void ocelot_port_get_ethtool_stats(struct net_device *dev,
1320 struct ethtool_stats *stats,
1321 u64 *data)
1322 {
1323 struct ocelot_port_private *priv = netdev_priv(dev);
1324 struct ocelot *ocelot = priv->port.ocelot;
1325 int port = priv->chip_port;
1326
1327 ocelot_get_ethtool_stats(ocelot, port, data);
1328 }
1329
1330 int ocelot_get_sset_count(struct ocelot *ocelot, int port, int sset)
1331 {
1332 if (sset != ETH_SS_STATS)
1333 return -EOPNOTSUPP;
1334
1335 return ocelot->num_stats;
1336 }
1337 EXPORT_SYMBOL(ocelot_get_sset_count);
1338
1339 static int ocelot_port_get_sset_count(struct net_device *dev, int sset)
1340 {
1341 struct ocelot_port_private *priv = netdev_priv(dev);
1342 struct ocelot *ocelot = priv->port.ocelot;
1343 int port = priv->chip_port;
1344
1345 return ocelot_get_sset_count(ocelot, port, sset);
1346 }
1347
1348 int ocelot_get_ts_info(struct ocelot *ocelot, int port,
1349 struct ethtool_ts_info *info)
1350 {
1351 info->phc_index = ocelot->ptp_clock ?
1352 ptp_clock_index(ocelot->ptp_clock) : -1;
1353 info->so_timestamping |= SOF_TIMESTAMPING_TX_SOFTWARE |
1354 SOF_TIMESTAMPING_RX_SOFTWARE |
1355 SOF_TIMESTAMPING_SOFTWARE |
1356 SOF_TIMESTAMPING_TX_HARDWARE |
1357 SOF_TIMESTAMPING_RX_HARDWARE |
1358 SOF_TIMESTAMPING_RAW_HARDWARE;
1359 info->tx_types = BIT(HWTSTAMP_TX_OFF) | BIT(HWTSTAMP_TX_ON) |
1360 BIT(HWTSTAMP_TX_ONESTEP_SYNC);
1361 info->rx_filters = BIT(HWTSTAMP_FILTER_NONE) | BIT(HWTSTAMP_FILTER_ALL);
1362
1363 return 0;
1364 }
1365 EXPORT_SYMBOL(ocelot_get_ts_info);
1366
1367 static int ocelot_port_get_ts_info(struct net_device *dev,
1368 struct ethtool_ts_info *info)
1369 {
1370 struct ocelot_port_private *priv = netdev_priv(dev);
1371 struct ocelot *ocelot = priv->port.ocelot;
1372 int port = priv->chip_port;
1373
1374 if (!ocelot->ptp)
1375 return ethtool_op_get_ts_info(dev, info);
1376
1377 return ocelot_get_ts_info(ocelot, port, info);
1378 }
1379
1380 static const struct ethtool_ops ocelot_ethtool_ops = {
1381 .get_strings = ocelot_port_get_strings,
1382 .get_ethtool_stats = ocelot_port_get_ethtool_stats,
1383 .get_sset_count = ocelot_port_get_sset_count,
1384 .get_link_ksettings = phy_ethtool_get_link_ksettings,
1385 .set_link_ksettings = phy_ethtool_set_link_ksettings,
1386 .get_ts_info = ocelot_port_get_ts_info,
1387 };
1388
1389 void ocelot_bridge_stp_state_set(struct ocelot *ocelot, int port, u8 state)
1390 {
1391 u32 port_cfg;
1392 int p, i;
1393
1394 if (!(BIT(port) & ocelot->bridge_mask))
1395 return;
1396
1397 port_cfg = ocelot_read_gix(ocelot, ANA_PORT_PORT_CFG, port);
1398
1399 switch (state) {
1400 case BR_STATE_FORWARDING:
1401 ocelot->bridge_fwd_mask |= BIT(port);
1402 /* Fallthrough */
1403 case BR_STATE_LEARNING:
1404 port_cfg |= ANA_PORT_PORT_CFG_LEARN_ENA;
1405 break;
1406
1407 default:
1408 port_cfg &= ~ANA_PORT_PORT_CFG_LEARN_ENA;
1409 ocelot->bridge_fwd_mask &= ~BIT(port);
1410 break;
1411 }
1412
1413 ocelot_write_gix(ocelot, port_cfg, ANA_PORT_PORT_CFG, port);
1414
1415 /* Apply FWD mask. The loop is needed to add/remove the current port as
1416 * a source for the other ports.
1417 */
1418 for (p = 0; p < ocelot->num_phys_ports; p++) {
1419 if (ocelot->bridge_fwd_mask & BIT(p)) {
1420 unsigned long mask = ocelot->bridge_fwd_mask & ~BIT(p);
1421
1422 for (i = 0; i < ocelot->num_phys_ports; i++) {
1423 unsigned long bond_mask = ocelot->lags[i];
1424
1425 if (!bond_mask)
1426 continue;
1427
1428 if (bond_mask & BIT(p)) {
1429 mask &= ~bond_mask;
1430 break;
1431 }
1432 }
1433
1434 ocelot_write_rix(ocelot, mask,
1435 ANA_PGID_PGID, PGID_SRC + p);
1436 } else {
1437 ocelot_write_rix(ocelot, 0,
1438 ANA_PGID_PGID, PGID_SRC + p);
1439 }
1440 }
1441 }
1442 EXPORT_SYMBOL(ocelot_bridge_stp_state_set);
1443
1444 static void ocelot_port_attr_stp_state_set(struct ocelot *ocelot, int port,
1445 struct switchdev_trans *trans,
1446 u8 state)
1447 {
1448 if (switchdev_trans_ph_prepare(trans))
1449 return;
1450
1451 ocelot_bridge_stp_state_set(ocelot, port, state);
1452 }
1453
1454 void ocelot_set_ageing_time(struct ocelot *ocelot, unsigned int msecs)
1455 {
1456 ocelot_write(ocelot, ANA_AUTOAGE_AGE_PERIOD(msecs / 2),
1457 ANA_AUTOAGE);
1458 }
1459 EXPORT_SYMBOL(ocelot_set_ageing_time);
1460
1461 static void ocelot_port_attr_ageing_set(struct ocelot *ocelot, int port,
1462 unsigned long ageing_clock_t)
1463 {
1464 unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock_t);
1465 u32 ageing_time = jiffies_to_msecs(ageing_jiffies) / 1000;
1466
1467 ocelot_set_ageing_time(ocelot, ageing_time);
1468 }
1469
1470 static void ocelot_port_attr_mc_set(struct ocelot *ocelot, int port, bool mc)
1471 {
1472 u32 cpu_fwd_mcast = ANA_PORT_CPU_FWD_CFG_CPU_IGMP_REDIR_ENA |
1473 ANA_PORT_CPU_FWD_CFG_CPU_MLD_REDIR_ENA |
1474 ANA_PORT_CPU_FWD_CFG_CPU_IPMC_CTRL_COPY_ENA;
1475 u32 val = 0;
1476
1477 if (mc)
1478 val = cpu_fwd_mcast;
1479
1480 ocelot_rmw_gix(ocelot, val, cpu_fwd_mcast,
1481 ANA_PORT_CPU_FWD_CFG, port);
1482 }
1483
1484 static int ocelot_port_attr_set(struct net_device *dev,
1485 const struct switchdev_attr *attr,
1486 struct switchdev_trans *trans)
1487 {
1488 struct ocelot_port_private *priv = netdev_priv(dev);
1489 struct ocelot *ocelot = priv->port.ocelot;
1490 int port = priv->chip_port;
1491 int err = 0;
1492
1493 switch (attr->id) {
1494 case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
1495 ocelot_port_attr_stp_state_set(ocelot, port, trans,
1496 attr->u.stp_state);
1497 break;
1498 case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME:
1499 ocelot_port_attr_ageing_set(ocelot, port, attr->u.ageing_time);
1500 break;
1501 case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING:
1502 ocelot_port_vlan_filtering(ocelot, port,
1503 attr->u.vlan_filtering);
1504 break;
1505 case SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED:
1506 ocelot_port_attr_mc_set(ocelot, port, !attr->u.mc_disabled);
1507 break;
1508 default:
1509 err = -EOPNOTSUPP;
1510 break;
1511 }
1512
1513 return err;
1514 }
1515
1516 static int ocelot_port_obj_add_vlan(struct net_device *dev,
1517 const struct switchdev_obj_port_vlan *vlan,
1518 struct switchdev_trans *trans)
1519 {
1520 int ret;
1521 u16 vid;
1522
1523 for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {
1524 ret = ocelot_vlan_vid_add(dev, vid,
1525 vlan->flags & BRIDGE_VLAN_INFO_PVID,
1526 vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED);
1527 if (ret)
1528 return ret;
1529 }
1530
1531 return 0;
1532 }
1533
1534 static int ocelot_port_vlan_del_vlan(struct net_device *dev,
1535 const struct switchdev_obj_port_vlan *vlan)
1536 {
1537 int ret;
1538 u16 vid;
1539
1540 for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {
1541 ret = ocelot_vlan_vid_del(dev, vid);
1542
1543 if (ret)
1544 return ret;
1545 }
1546
1547 return 0;
1548 }
1549
1550 static struct ocelot_multicast *ocelot_multicast_get(struct ocelot *ocelot,
1551 const unsigned char *addr,
1552 u16 vid)
1553 {
1554 struct ocelot_multicast *mc;
1555
1556 list_for_each_entry(mc, &ocelot->multicast, list) {
1557 if (ether_addr_equal(mc->addr, addr) && mc->vid == vid)
1558 return mc;
1559 }
1560
1561 return NULL;
1562 }
1563
1564 static int ocelot_port_obj_add_mdb(struct net_device *dev,
1565 const struct switchdev_obj_port_mdb *mdb,
1566 struct switchdev_trans *trans)
1567 {
1568 struct ocelot_port_private *priv = netdev_priv(dev);
1569 struct ocelot_port *ocelot_port = &priv->port;
1570 struct ocelot *ocelot = ocelot_port->ocelot;
1571 unsigned char addr[ETH_ALEN];
1572 struct ocelot_multicast *mc;
1573 int port = priv->chip_port;
1574 u16 vid = mdb->vid;
1575 bool new = false;
1576
1577 if (!vid)
1578 vid = ocelot_port->pvid;
1579
1580 mc = ocelot_multicast_get(ocelot, mdb->addr, vid);
1581 if (!mc) {
1582 mc = devm_kzalloc(ocelot->dev, sizeof(*mc), GFP_KERNEL);
1583 if (!mc)
1584 return -ENOMEM;
1585
1586 memcpy(mc->addr, mdb->addr, ETH_ALEN);
1587 mc->vid = vid;
1588
1589 list_add_tail(&mc->list, &ocelot->multicast);
1590 new = true;
1591 }
1592
1593 memcpy(addr, mc->addr, ETH_ALEN);
1594 addr[0] = 0;
1595
1596 if (!new) {
1597 addr[2] = mc->ports << 0;
1598 addr[1] = mc->ports << 8;
1599 ocelot_mact_forget(ocelot, addr, vid);
1600 }
1601
1602 mc->ports |= BIT(port);
1603 addr[2] = mc->ports << 0;
1604 addr[1] = mc->ports << 8;
1605
1606 return ocelot_mact_learn(ocelot, 0, addr, vid, ENTRYTYPE_MACv4);
1607 }
1608
1609 static int ocelot_port_obj_del_mdb(struct net_device *dev,
1610 const struct switchdev_obj_port_mdb *mdb)
1611 {
1612 struct ocelot_port_private *priv = netdev_priv(dev);
1613 struct ocelot_port *ocelot_port = &priv->port;
1614 struct ocelot *ocelot = ocelot_port->ocelot;
1615 unsigned char addr[ETH_ALEN];
1616 struct ocelot_multicast *mc;
1617 int port = priv->chip_port;
1618 u16 vid = mdb->vid;
1619
1620 if (!vid)
1621 vid = ocelot_port->pvid;
1622
1623 mc = ocelot_multicast_get(ocelot, mdb->addr, vid);
1624 if (!mc)
1625 return -ENOENT;
1626
1627 memcpy(addr, mc->addr, ETH_ALEN);
1628 addr[2] = mc->ports << 0;
1629 addr[1] = mc->ports << 8;
1630 addr[0] = 0;
1631 ocelot_mact_forget(ocelot, addr, vid);
1632
1633 mc->ports &= ~BIT(port);
1634 if (!mc->ports) {
1635 list_del(&mc->list);
1636 devm_kfree(ocelot->dev, mc);
1637 return 0;
1638 }
1639
1640 addr[2] = mc->ports << 0;
1641 addr[1] = mc->ports << 8;
1642
1643 return ocelot_mact_learn(ocelot, 0, addr, vid, ENTRYTYPE_MACv4);
1644 }
1645
1646 static int ocelot_port_obj_add(struct net_device *dev,
1647 const struct switchdev_obj *obj,
1648 struct switchdev_trans *trans,
1649 struct netlink_ext_ack *extack)
1650 {
1651 int ret = 0;
1652
1653 switch (obj->id) {
1654 case SWITCHDEV_OBJ_ID_PORT_VLAN:
1655 ret = ocelot_port_obj_add_vlan(dev,
1656 SWITCHDEV_OBJ_PORT_VLAN(obj),
1657 trans);
1658 break;
1659 case SWITCHDEV_OBJ_ID_PORT_MDB:
1660 ret = ocelot_port_obj_add_mdb(dev, SWITCHDEV_OBJ_PORT_MDB(obj),
1661 trans);
1662 break;
1663 default:
1664 return -EOPNOTSUPP;
1665 }
1666
1667 return ret;
1668 }
1669
1670 static int ocelot_port_obj_del(struct net_device *dev,
1671 const struct switchdev_obj *obj)
1672 {
1673 int ret = 0;
1674
1675 switch (obj->id) {
1676 case SWITCHDEV_OBJ_ID_PORT_VLAN:
1677 ret = ocelot_port_vlan_del_vlan(dev,
1678 SWITCHDEV_OBJ_PORT_VLAN(obj));
1679 break;
1680 case SWITCHDEV_OBJ_ID_PORT_MDB:
1681 ret = ocelot_port_obj_del_mdb(dev, SWITCHDEV_OBJ_PORT_MDB(obj));
1682 break;
1683 default:
1684 return -EOPNOTSUPP;
1685 }
1686
1687 return ret;
1688 }
1689
1690 int ocelot_port_bridge_join(struct ocelot *ocelot, int port,
1691 struct net_device *bridge)
1692 {
1693 if (!ocelot->bridge_mask) {
1694 ocelot->hw_bridge_dev = bridge;
1695 } else {
1696 if (ocelot->hw_bridge_dev != bridge)
1697 /* This is adding the port to a second bridge, this is
1698 * unsupported */
1699 return -ENODEV;
1700 }
1701
1702 ocelot->bridge_mask |= BIT(port);
1703
1704 return 0;
1705 }
1706 EXPORT_SYMBOL(ocelot_port_bridge_join);
1707
1708 int ocelot_port_bridge_leave(struct ocelot *ocelot, int port,
1709 struct net_device *bridge)
1710 {
1711 ocelot->bridge_mask &= ~BIT(port);
1712
1713 if (!ocelot->bridge_mask)
1714 ocelot->hw_bridge_dev = NULL;
1715
1716 ocelot_port_vlan_filtering(ocelot, port, 0);
1717 ocelot_port_set_pvid(ocelot, port, 0);
1718 return ocelot_port_set_native_vlan(ocelot, port, 0);
1719 }
1720 EXPORT_SYMBOL(ocelot_port_bridge_leave);
1721
1722 static void ocelot_set_aggr_pgids(struct ocelot *ocelot)
1723 {
1724 int i, port, lag;
1725
1726 /* Reset destination and aggregation PGIDS */
1727 for (port = 0; port < ocelot->num_phys_ports; port++)
1728 ocelot_write_rix(ocelot, BIT(port), ANA_PGID_PGID, port);
1729
1730 for (i = PGID_AGGR; i < PGID_SRC; i++)
1731 ocelot_write_rix(ocelot, GENMASK(ocelot->num_phys_ports - 1, 0),
1732 ANA_PGID_PGID, i);
1733
1734 /* Now, set PGIDs for each LAG */
1735 for (lag = 0; lag < ocelot->num_phys_ports; lag++) {
1736 unsigned long bond_mask;
1737 int aggr_count = 0;
1738 u8 aggr_idx[16];
1739
1740 bond_mask = ocelot->lags[lag];
1741 if (!bond_mask)
1742 continue;
1743
1744 for_each_set_bit(port, &bond_mask, ocelot->num_phys_ports) {
1745 // Destination mask
1746 ocelot_write_rix(ocelot, bond_mask,
1747 ANA_PGID_PGID, port);
1748 aggr_idx[aggr_count] = port;
1749 aggr_count++;
1750 }
1751
1752 for (i = PGID_AGGR; i < PGID_SRC; i++) {
1753 u32 ac;
1754
1755 ac = ocelot_read_rix(ocelot, ANA_PGID_PGID, i);
1756 ac &= ~bond_mask;
1757 ac |= BIT(aggr_idx[i % aggr_count]);
1758 ocelot_write_rix(ocelot, ac, ANA_PGID_PGID, i);
1759 }
1760 }
1761 }
1762
1763 static void ocelot_setup_lag(struct ocelot *ocelot, int lag)
1764 {
1765 unsigned long bond_mask = ocelot->lags[lag];
1766 unsigned int p;
1767
1768 for_each_set_bit(p, &bond_mask, ocelot->num_phys_ports) {
1769 u32 port_cfg = ocelot_read_gix(ocelot, ANA_PORT_PORT_CFG, p);
1770
1771 port_cfg &= ~ANA_PORT_PORT_CFG_PORTID_VAL_M;
1772
1773 /* Use lag port as logical port for port i */
1774 ocelot_write_gix(ocelot, port_cfg |
1775 ANA_PORT_PORT_CFG_PORTID_VAL(lag),
1776 ANA_PORT_PORT_CFG, p);
1777 }
1778 }
1779
1780 static int ocelot_port_lag_join(struct ocelot *ocelot, int port,
1781 struct net_device *bond)
1782 {
1783 struct net_device *ndev;
1784 u32 bond_mask = 0;
1785 int lag, lp;
1786
1787 rcu_read_lock();
1788 for_each_netdev_in_bond_rcu(bond, ndev) {
1789 struct ocelot_port_private *priv = netdev_priv(ndev);
1790
1791 bond_mask |= BIT(priv->chip_port);
1792 }
1793 rcu_read_unlock();
1794
1795 lp = __ffs(bond_mask);
1796
1797 /* If the new port is the lowest one, use it as the logical port from
1798 * now on
1799 */
1800 if (port == lp) {
1801 lag = port;
1802 ocelot->lags[port] = bond_mask;
1803 bond_mask &= ~BIT(port);
1804 if (bond_mask) {
1805 lp = __ffs(bond_mask);
1806 ocelot->lags[lp] = 0;
1807 }
1808 } else {
1809 lag = lp;
1810 ocelot->lags[lp] |= BIT(port);
1811 }
1812
1813 ocelot_setup_lag(ocelot, lag);
1814 ocelot_set_aggr_pgids(ocelot);
1815
1816 return 0;
1817 }
1818
1819 static void ocelot_port_lag_leave(struct ocelot *ocelot, int port,
1820 struct net_device *bond)
1821 {
1822 u32 port_cfg;
1823 int i;
1824
1825 /* Remove port from any lag */
1826 for (i = 0; i < ocelot->num_phys_ports; i++)
1827 ocelot->lags[i] &= ~BIT(port);
1828
1829 /* if it was the logical port of the lag, move the lag config to the
1830 * next port
1831 */
1832 if (ocelot->lags[port]) {
1833 int n = __ffs(ocelot->lags[port]);
1834
1835 ocelot->lags[n] = ocelot->lags[port];
1836 ocelot->lags[port] = 0;
1837
1838 ocelot_setup_lag(ocelot, n);
1839 }
1840
1841 port_cfg = ocelot_read_gix(ocelot, ANA_PORT_PORT_CFG, port);
1842 port_cfg &= ~ANA_PORT_PORT_CFG_PORTID_VAL_M;
1843 ocelot_write_gix(ocelot, port_cfg | ANA_PORT_PORT_CFG_PORTID_VAL(port),
1844 ANA_PORT_PORT_CFG, port);
1845
1846 ocelot_set_aggr_pgids(ocelot);
1847 }
1848
1849 /* Checks if the net_device instance given to us originate from our driver. */
1850 static bool ocelot_netdevice_dev_check(const struct net_device *dev)
1851 {
1852 return dev->netdev_ops == &ocelot_port_netdev_ops;
1853 }
1854
1855 static int ocelot_netdevice_port_event(struct net_device *dev,
1856 unsigned long event,
1857 struct netdev_notifier_changeupper_info *info)
1858 {
1859 struct ocelot_port_private *priv = netdev_priv(dev);
1860 struct ocelot_port *ocelot_port = &priv->port;
1861 struct ocelot *ocelot = ocelot_port->ocelot;
1862 int port = priv->chip_port;
1863 int err = 0;
1864
1865 switch (event) {
1866 case NETDEV_CHANGEUPPER:
1867 if (netif_is_bridge_master(info->upper_dev)) {
1868 if (info->linking) {
1869 err = ocelot_port_bridge_join(ocelot, port,
1870 info->upper_dev);
1871 } else {
1872 err = ocelot_port_bridge_leave(ocelot, port,
1873 info->upper_dev);
1874 }
1875 }
1876 if (netif_is_lag_master(info->upper_dev)) {
1877 if (info->linking)
1878 err = ocelot_port_lag_join(ocelot, port,
1879 info->upper_dev);
1880 else
1881 ocelot_port_lag_leave(ocelot, port,
1882 info->upper_dev);
1883 }
1884 break;
1885 default:
1886 break;
1887 }
1888
1889 return err;
1890 }
1891
1892 static int ocelot_netdevice_event(struct notifier_block *unused,
1893 unsigned long event, void *ptr)
1894 {
1895 struct netdev_notifier_changeupper_info *info = ptr;
1896 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
1897 int ret = 0;
1898
1899 if (!ocelot_netdevice_dev_check(dev))
1900 return 0;
1901
1902 if (event == NETDEV_PRECHANGEUPPER &&
1903 netif_is_lag_master(info->upper_dev)) {
1904 struct netdev_lag_upper_info *lag_upper_info = info->upper_info;
1905 struct netlink_ext_ack *extack;
1906
1907 if (lag_upper_info &&
1908 lag_upper_info->tx_type != NETDEV_LAG_TX_TYPE_HASH) {
1909 extack = netdev_notifier_info_to_extack(&info->info);
1910 NL_SET_ERR_MSG_MOD(extack, "LAG device using unsupported Tx type");
1911
1912 ret = -EINVAL;
1913 goto notify;
1914 }
1915 }
1916
1917 if (netif_is_lag_master(dev)) {
1918 struct net_device *slave;
1919 struct list_head *iter;
1920
1921 netdev_for_each_lower_dev(dev, slave, iter) {
1922 ret = ocelot_netdevice_port_event(slave, event, info);
1923 if (ret)
1924 goto notify;
1925 }
1926 } else {
1927 ret = ocelot_netdevice_port_event(dev, event, info);
1928 }
1929
1930 notify:
1931 return notifier_from_errno(ret);
1932 }
1933
1934 struct notifier_block ocelot_netdevice_nb __read_mostly = {
1935 .notifier_call = ocelot_netdevice_event,
1936 };
1937 EXPORT_SYMBOL(ocelot_netdevice_nb);
1938
1939 static int ocelot_switchdev_event(struct notifier_block *unused,
1940 unsigned long event, void *ptr)
1941 {
1942 struct net_device *dev = switchdev_notifier_info_to_dev(ptr);
1943 int err;
1944
1945 switch (event) {
1946 case SWITCHDEV_PORT_ATTR_SET:
1947 err = switchdev_handle_port_attr_set(dev, ptr,
1948 ocelot_netdevice_dev_check,
1949 ocelot_port_attr_set);
1950 return notifier_from_errno(err);
1951 }
1952
1953 return NOTIFY_DONE;
1954 }
1955
1956 struct notifier_block ocelot_switchdev_nb __read_mostly = {
1957 .notifier_call = ocelot_switchdev_event,
1958 };
1959 EXPORT_SYMBOL(ocelot_switchdev_nb);
1960
1961 static int ocelot_switchdev_blocking_event(struct notifier_block *unused,
1962 unsigned long event, void *ptr)
1963 {
1964 struct net_device *dev = switchdev_notifier_info_to_dev(ptr);
1965 int err;
1966
1967 switch (event) {
1968 /* Blocking events. */
1969 case SWITCHDEV_PORT_OBJ_ADD:
1970 err = switchdev_handle_port_obj_add(dev, ptr,
1971 ocelot_netdevice_dev_check,
1972 ocelot_port_obj_add);
1973 return notifier_from_errno(err);
1974 case SWITCHDEV_PORT_OBJ_DEL:
1975 err = switchdev_handle_port_obj_del(dev, ptr,
1976 ocelot_netdevice_dev_check,
1977 ocelot_port_obj_del);
1978 return notifier_from_errno(err);
1979 case SWITCHDEV_PORT_ATTR_SET:
1980 err = switchdev_handle_port_attr_set(dev, ptr,
1981 ocelot_netdevice_dev_check,
1982 ocelot_port_attr_set);
1983 return notifier_from_errno(err);
1984 }
1985
1986 return NOTIFY_DONE;
1987 }
1988
1989 struct notifier_block ocelot_switchdev_blocking_nb __read_mostly = {
1990 .notifier_call = ocelot_switchdev_blocking_event,
1991 };
1992 EXPORT_SYMBOL(ocelot_switchdev_blocking_nb);
1993
1994 int ocelot_ptp_gettime64(struct ptp_clock_info *ptp, struct timespec64 *ts)
1995 {
1996 struct ocelot *ocelot = container_of(ptp, struct ocelot, ptp_info);
1997 unsigned long flags;
1998 time64_t s;
1999 u32 val;
2000 s64 ns;
2001
2002 spin_lock_irqsave(&ocelot->ptp_clock_lock, flags);
2003
2004 val = ocelot_read_rix(ocelot, PTP_PIN_CFG, TOD_ACC_PIN);
2005 val &= ~(PTP_PIN_CFG_SYNC | PTP_PIN_CFG_ACTION_MASK | PTP_PIN_CFG_DOM);
2006 val |= PTP_PIN_CFG_ACTION(PTP_PIN_ACTION_SAVE);
2007 ocelot_write_rix(ocelot, val, PTP_PIN_CFG, TOD_ACC_PIN);
2008
2009 s = ocelot_read_rix(ocelot, PTP_PIN_TOD_SEC_MSB, TOD_ACC_PIN) & 0xffff;
2010 s <<= 32;
2011 s += ocelot_read_rix(ocelot, PTP_PIN_TOD_SEC_LSB, TOD_ACC_PIN);
2012 ns = ocelot_read_rix(ocelot, PTP_PIN_TOD_NSEC, TOD_ACC_PIN);
2013
2014 spin_unlock_irqrestore(&ocelot->ptp_clock_lock, flags);
2015
2016 /* Deal with negative values */
2017 if (ns >= 0x3ffffff0 && ns <= 0x3fffffff) {
2018 s--;
2019 ns &= 0xf;
2020 ns += 999999984;
2021 }
2022
2023 set_normalized_timespec64(ts, s, ns);
2024 return 0;
2025 }
2026 EXPORT_SYMBOL(ocelot_ptp_gettime64);
2027
2028 static int ocelot_ptp_settime64(struct ptp_clock_info *ptp,
2029 const struct timespec64 *ts)
2030 {
2031 struct ocelot *ocelot = container_of(ptp, struct ocelot, ptp_info);
2032 unsigned long flags;
2033 u32 val;
2034
2035 spin_lock_irqsave(&ocelot->ptp_clock_lock, flags);
2036
2037 val = ocelot_read_rix(ocelot, PTP_PIN_CFG, TOD_ACC_PIN);
2038 val &= ~(PTP_PIN_CFG_SYNC | PTP_PIN_CFG_ACTION_MASK | PTP_PIN_CFG_DOM);
2039 val |= PTP_PIN_CFG_ACTION(PTP_PIN_ACTION_IDLE);
2040
2041 ocelot_write_rix(ocelot, val, PTP_PIN_CFG, TOD_ACC_PIN);
2042
2043 ocelot_write_rix(ocelot, lower_32_bits(ts->tv_sec), PTP_PIN_TOD_SEC_LSB,
2044 TOD_ACC_PIN);
2045 ocelot_write_rix(ocelot, upper_32_bits(ts->tv_sec), PTP_PIN_TOD_SEC_MSB,
2046 TOD_ACC_PIN);
2047 ocelot_write_rix(ocelot, ts->tv_nsec, PTP_PIN_TOD_NSEC, TOD_ACC_PIN);
2048
2049 val = ocelot_read_rix(ocelot, PTP_PIN_CFG, TOD_ACC_PIN);
2050 val &= ~(PTP_PIN_CFG_SYNC | PTP_PIN_CFG_ACTION_MASK | PTP_PIN_CFG_DOM);
2051 val |= PTP_PIN_CFG_ACTION(PTP_PIN_ACTION_LOAD);
2052
2053 ocelot_write_rix(ocelot, val, PTP_PIN_CFG, TOD_ACC_PIN);
2054
2055 spin_unlock_irqrestore(&ocelot->ptp_clock_lock, flags);
2056 return 0;
2057 }
2058
2059 static int ocelot_ptp_adjtime(struct ptp_clock_info *ptp, s64 delta)
2060 {
2061 if (delta > -(NSEC_PER_SEC / 2) && delta < (NSEC_PER_SEC / 2)) {
2062 struct ocelot *ocelot = container_of(ptp, struct ocelot, ptp_info);
2063 unsigned long flags;
2064 u32 val;
2065
2066 spin_lock_irqsave(&ocelot->ptp_clock_lock, flags);
2067
2068 val = ocelot_read_rix(ocelot, PTP_PIN_CFG, TOD_ACC_PIN);
2069 val &= ~(PTP_PIN_CFG_SYNC | PTP_PIN_CFG_ACTION_MASK | PTP_PIN_CFG_DOM);
2070 val |= PTP_PIN_CFG_ACTION(PTP_PIN_ACTION_IDLE);
2071
2072 ocelot_write_rix(ocelot, val, PTP_PIN_CFG, TOD_ACC_PIN);
2073
2074 ocelot_write_rix(ocelot, 0, PTP_PIN_TOD_SEC_LSB, TOD_ACC_PIN);
2075 ocelot_write_rix(ocelot, 0, PTP_PIN_TOD_SEC_MSB, TOD_ACC_PIN);
2076 ocelot_write_rix(ocelot, delta, PTP_PIN_TOD_NSEC, TOD_ACC_PIN);
2077
2078 val = ocelot_read_rix(ocelot, PTP_PIN_CFG, TOD_ACC_PIN);
2079 val &= ~(PTP_PIN_CFG_SYNC | PTP_PIN_CFG_ACTION_MASK | PTP_PIN_CFG_DOM);
2080 val |= PTP_PIN_CFG_ACTION(PTP_PIN_ACTION_DELTA);
2081
2082 ocelot_write_rix(ocelot, val, PTP_PIN_CFG, TOD_ACC_PIN);
2083
2084 spin_unlock_irqrestore(&ocelot->ptp_clock_lock, flags);
2085 } else {
2086 /* Fall back using ocelot_ptp_settime64 which is not exact. */
2087 struct timespec64 ts;
2088 u64 now;
2089
2090 ocelot_ptp_gettime64(ptp, &ts);
2091
2092 now = ktime_to_ns(timespec64_to_ktime(ts));
2093 ts = ns_to_timespec64(now + delta);
2094
2095 ocelot_ptp_settime64(ptp, &ts);
2096 }
2097 return 0;
2098 }
2099
2100 static int ocelot_ptp_adjfine(struct ptp_clock_info *ptp, long scaled_ppm)
2101 {
2102 struct ocelot *ocelot = container_of(ptp, struct ocelot, ptp_info);
2103 u32 unit = 0, direction = 0;
2104 unsigned long flags;
2105 u64 adj = 0;
2106
2107 spin_lock_irqsave(&ocelot->ptp_clock_lock, flags);
2108
2109 if (!scaled_ppm)
2110 goto disable_adj;
2111
2112 if (scaled_ppm < 0) {
2113 direction = PTP_CFG_CLK_ADJ_CFG_DIR;
2114 scaled_ppm = -scaled_ppm;
2115 }
2116
2117 adj = PSEC_PER_SEC << 16;
2118 do_div(adj, scaled_ppm);
2119 do_div(adj, 1000);
2120
2121 /* If the adjustment value is too large, use ns instead */
2122 if (adj >= (1L << 30)) {
2123 unit = PTP_CFG_CLK_ADJ_FREQ_NS;
2124 do_div(adj, 1000);
2125 }
2126
2127 /* Still too big */
2128 if (adj >= (1L << 30))
2129 goto disable_adj;
2130
2131 ocelot_write(ocelot, unit | adj, PTP_CLK_CFG_ADJ_FREQ);
2132 ocelot_write(ocelot, PTP_CFG_CLK_ADJ_CFG_ENA | direction,
2133 PTP_CLK_CFG_ADJ_CFG);
2134
2135 spin_unlock_irqrestore(&ocelot->ptp_clock_lock, flags);
2136 return 0;
2137
2138 disable_adj:
2139 ocelot_write(ocelot, 0, PTP_CLK_CFG_ADJ_CFG);
2140
2141 spin_unlock_irqrestore(&ocelot->ptp_clock_lock, flags);
2142 return 0;
2143 }
2144
2145 static struct ptp_clock_info ocelot_ptp_clock_info = {
2146 .owner = THIS_MODULE,
2147 .name = "ocelot ptp",
2148 .max_adj = 0x7fffffff,
2149 .n_alarm = 0,
2150 .n_ext_ts = 0,
2151 .n_per_out = 0,
2152 .n_pins = 0,
2153 .pps = 0,
2154 .gettime64 = ocelot_ptp_gettime64,
2155 .settime64 = ocelot_ptp_settime64,
2156 .adjtime = ocelot_ptp_adjtime,
2157 .adjfine = ocelot_ptp_adjfine,
2158 };
2159
2160 static int ocelot_init_timestamp(struct ocelot *ocelot)
2161 {
2162 struct ptp_clock *ptp_clock;
2163
2164 ocelot->ptp_info = ocelot_ptp_clock_info;
2165 ptp_clock = ptp_clock_register(&ocelot->ptp_info, ocelot->dev);
2166 if (IS_ERR(ptp_clock))
2167 return PTR_ERR(ptp_clock);
2168 /* Check if PHC support is missing at the configuration level */
2169 if (!ptp_clock)
2170 return 0;
2171
2172 ocelot->ptp_clock = ptp_clock;
2173
2174 ocelot_write(ocelot, SYS_PTP_CFG_PTP_STAMP_WID(30), SYS_PTP_CFG);
2175 ocelot_write(ocelot, 0xffffffff, ANA_TABLES_PTP_ID_LOW);
2176 ocelot_write(ocelot, 0xffffffff, ANA_TABLES_PTP_ID_HIGH);
2177
2178 ocelot_write(ocelot, PTP_CFG_MISC_PTP_EN, PTP_CFG_MISC);
2179
2180 /* There is no device reconfiguration, PTP Rx stamping is always
2181 * enabled.
2182 */
2183 ocelot->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT;
2184
2185 return 0;
2186 }
2187
2188 /* Configure the maximum SDU (L2 payload) on RX to the value specified in @sdu.
2189 * The length of VLAN tags is accounted for automatically via DEV_MAC_TAGS_CFG.
2190 * In the special case that it's the NPI port that we're configuring, the
2191 * length of the tag and optional prefix needs to be accounted for privately,
2192 * in order to be able to sustain communication at the requested @sdu.
2193 */
2194 void ocelot_port_set_maxlen(struct ocelot *ocelot, int port, size_t sdu)
2195 {
2196 struct ocelot_port *ocelot_port = ocelot->ports[port];
2197 int maxlen = sdu + ETH_HLEN + ETH_FCS_LEN;
2198 int atop_wm;
2199
2200 if (port == ocelot->npi) {
2201 maxlen += OCELOT_TAG_LEN;
2202
2203 if (ocelot->inj_prefix == OCELOT_TAG_PREFIX_SHORT)
2204 maxlen += OCELOT_SHORT_PREFIX_LEN;
2205 else if (ocelot->inj_prefix == OCELOT_TAG_PREFIX_LONG)
2206 maxlen += OCELOT_LONG_PREFIX_LEN;
2207 }
2208
2209 ocelot_port_writel(ocelot_port, maxlen, DEV_MAC_MAXLEN_CFG);
2210
2211 /* Set Pause WM hysteresis
2212 * 152 = 6 * maxlen / OCELOT_BUFFER_CELL_SZ
2213 * 101 = 4 * maxlen / OCELOT_BUFFER_CELL_SZ
2214 */
2215 ocelot_write_rix(ocelot, SYS_PAUSE_CFG_PAUSE_ENA |
2216 SYS_PAUSE_CFG_PAUSE_STOP(101) |
2217 SYS_PAUSE_CFG_PAUSE_START(152), SYS_PAUSE_CFG, port);
2218
2219 /* Tail dropping watermark */
2220 atop_wm = (ocelot->shared_queue_sz - 9 * maxlen) /
2221 OCELOT_BUFFER_CELL_SZ;
2222 ocelot_write_rix(ocelot, ocelot_wm_enc(9 * maxlen),
2223 SYS_ATOP, port);
2224 ocelot_write(ocelot, ocelot_wm_enc(atop_wm), SYS_ATOP_TOT_CFG);
2225 }
2226 EXPORT_SYMBOL(ocelot_port_set_maxlen);
2227
2228 int ocelot_get_max_mtu(struct ocelot *ocelot, int port)
2229 {
2230 int max_mtu = 65535 - ETH_HLEN - ETH_FCS_LEN;
2231
2232 if (port == ocelot->npi) {
2233 max_mtu -= OCELOT_TAG_LEN;
2234
2235 if (ocelot->inj_prefix == OCELOT_TAG_PREFIX_SHORT)
2236 max_mtu -= OCELOT_SHORT_PREFIX_LEN;
2237 else if (ocelot->inj_prefix == OCELOT_TAG_PREFIX_LONG)
2238 max_mtu -= OCELOT_LONG_PREFIX_LEN;
2239 }
2240
2241 return max_mtu;
2242 }
2243 EXPORT_SYMBOL(ocelot_get_max_mtu);
2244
2245 void ocelot_init_port(struct ocelot *ocelot, int port)
2246 {
2247 struct ocelot_port *ocelot_port = ocelot->ports[port];
2248
2249 skb_queue_head_init(&ocelot_port->tx_skbs);
2250
2251 /* Basic L2 initialization */
2252
2253 /* Set MAC IFG Gaps
2254 * FDX: TX_IFG = 5, RX_IFG1 = RX_IFG2 = 0
2255 * !FDX: TX_IFG = 5, RX_IFG1 = RX_IFG2 = 5
2256 */
2257 ocelot_port_writel(ocelot_port, DEV_MAC_IFG_CFG_TX_IFG(5),
2258 DEV_MAC_IFG_CFG);
2259
2260 /* Load seed (0) and set MAC HDX late collision */
2261 ocelot_port_writel(ocelot_port, DEV_MAC_HDX_CFG_LATE_COL_POS(67) |
2262 DEV_MAC_HDX_CFG_SEED_LOAD,
2263 DEV_MAC_HDX_CFG);
2264 mdelay(1);
2265 ocelot_port_writel(ocelot_port, DEV_MAC_HDX_CFG_LATE_COL_POS(67),
2266 DEV_MAC_HDX_CFG);
2267
2268 /* Set Max Length and maximum tags allowed */
2269 ocelot_port_set_maxlen(ocelot, port, ETH_DATA_LEN);
2270 ocelot_port_writel(ocelot_port, DEV_MAC_TAGS_CFG_TAG_ID(ETH_P_8021AD) |
2271 DEV_MAC_TAGS_CFG_VLAN_AWR_ENA |
2272 DEV_MAC_TAGS_CFG_VLAN_DBL_AWR_ENA |
2273 DEV_MAC_TAGS_CFG_VLAN_LEN_AWR_ENA,
2274 DEV_MAC_TAGS_CFG);
2275
2276 /* Set SMAC of Pause frame (00:00:00:00:00:00) */
2277 ocelot_port_writel(ocelot_port, 0, DEV_MAC_FC_MAC_HIGH_CFG);
2278 ocelot_port_writel(ocelot_port, 0, DEV_MAC_FC_MAC_LOW_CFG);
2279
2280 /* Drop frames with multicast source address */
2281 ocelot_rmw_gix(ocelot, ANA_PORT_DROP_CFG_DROP_MC_SMAC_ENA,
2282 ANA_PORT_DROP_CFG_DROP_MC_SMAC_ENA,
2283 ANA_PORT_DROP_CFG, port);
2284
2285 /* Set default VLAN and tag type to 8021Q. */
2286 ocelot_rmw_gix(ocelot, REW_PORT_VLAN_CFG_PORT_TPID(ETH_P_8021Q),
2287 REW_PORT_VLAN_CFG_PORT_TPID_M,
2288 REW_PORT_VLAN_CFG, port);
2289
2290 /* Enable vcap lookups */
2291 ocelot_vcap_enable(ocelot, port);
2292 }
2293 EXPORT_SYMBOL(ocelot_init_port);
2294
2295 int ocelot_probe_port(struct ocelot *ocelot, u8 port,
2296 void __iomem *regs,
2297 struct phy_device *phy)
2298 {
2299 struct ocelot_port_private *priv;
2300 struct ocelot_port *ocelot_port;
2301 struct net_device *dev;
2302 int err;
2303
2304 dev = alloc_etherdev(sizeof(struct ocelot_port_private));
2305 if (!dev)
2306 return -ENOMEM;
2307 SET_NETDEV_DEV(dev, ocelot->dev);
2308 priv = netdev_priv(dev);
2309 priv->dev = dev;
2310 priv->phy = phy;
2311 priv->chip_port = port;
2312 ocelot_port = &priv->port;
2313 ocelot_port->ocelot = ocelot;
2314 ocelot_port->regs = regs;
2315 ocelot->ports[port] = ocelot_port;
2316
2317 dev->netdev_ops = &ocelot_port_netdev_ops;
2318 dev->ethtool_ops = &ocelot_ethtool_ops;
2319
2320 dev->hw_features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_RXFCS |
2321 NETIF_F_HW_TC;
2322 dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_TC;
2323
2324 memcpy(dev->dev_addr, ocelot->base_mac, ETH_ALEN);
2325 dev->dev_addr[ETH_ALEN - 1] += port;
2326 ocelot_mact_learn(ocelot, PGID_CPU, dev->dev_addr, ocelot_port->pvid,
2327 ENTRYTYPE_LOCKED);
2328
2329 ocelot_init_port(ocelot, port);
2330
2331 err = register_netdev(dev);
2332 if (err) {
2333 dev_err(ocelot->dev, "register_netdev failed\n");
2334 free_netdev(dev);
2335 }
2336
2337 return err;
2338 }
2339 EXPORT_SYMBOL(ocelot_probe_port);
2340
2341 /* Configure and enable the CPU port module, which is a set of queues.
2342 * If @npi contains a valid port index, the CPU port module is connected
2343 * to the Node Processor Interface (NPI). This is the mode through which
2344 * frames can be injected from and extracted to an external CPU,
2345 * over Ethernet.
2346 */
2347 void ocelot_configure_cpu(struct ocelot *ocelot, int npi,
2348 enum ocelot_tag_prefix injection,
2349 enum ocelot_tag_prefix extraction)
2350 {
2351 int cpu = ocelot->num_phys_ports;
2352
2353 ocelot->npi = npi;
2354 ocelot->inj_prefix = injection;
2355 ocelot->xtr_prefix = extraction;
2356
2357 /* The unicast destination PGID for the CPU port module is unused */
2358 ocelot_write_rix(ocelot, 0, ANA_PGID_PGID, cpu);
2359 /* Instead set up a multicast destination PGID for traffic copied to
2360 * the CPU. Whitelisted MAC addresses like the port netdevice MAC
2361 * addresses will be copied to the CPU via this PGID.
2362 */
2363 ocelot_write_rix(ocelot, BIT(cpu), ANA_PGID_PGID, PGID_CPU);
2364 ocelot_write_gix(ocelot, ANA_PORT_PORT_CFG_RECV_ENA |
2365 ANA_PORT_PORT_CFG_PORTID_VAL(cpu),
2366 ANA_PORT_PORT_CFG, cpu);
2367
2368 if (npi >= 0 && npi < ocelot->num_phys_ports) {
2369 ocelot_write(ocelot, QSYS_EXT_CPU_CFG_EXT_CPUQ_MSK_M |
2370 QSYS_EXT_CPU_CFG_EXT_CPU_PORT(npi),
2371 QSYS_EXT_CPU_CFG);
2372
2373 /* Enable NPI port */
2374 ocelot_write_rix(ocelot,
2375 QSYS_SWITCH_PORT_MODE_INGRESS_DROP_MODE |
2376 QSYS_SWITCH_PORT_MODE_SCH_NEXT_CFG(1) |
2377 QSYS_SWITCH_PORT_MODE_PORT_ENA,
2378 QSYS_SWITCH_PORT_MODE, npi);
2379 /* NPI port Injection/Extraction configuration */
2380 ocelot_write_rix(ocelot,
2381 SYS_PORT_MODE_INCL_XTR_HDR(extraction) |
2382 SYS_PORT_MODE_INCL_INJ_HDR(injection),
2383 SYS_PORT_MODE, npi);
2384 }
2385
2386 /* Enable CPU port module */
2387 ocelot_write_rix(ocelot, QSYS_SWITCH_PORT_MODE_INGRESS_DROP_MODE |
2388 QSYS_SWITCH_PORT_MODE_SCH_NEXT_CFG(1) |
2389 QSYS_SWITCH_PORT_MODE_PORT_ENA,
2390 QSYS_SWITCH_PORT_MODE, cpu);
2391 /* CPU port Injection/Extraction configuration */
2392 ocelot_write_rix(ocelot, SYS_PORT_MODE_INCL_XTR_HDR(extraction) |
2393 SYS_PORT_MODE_INCL_INJ_HDR(injection),
2394 SYS_PORT_MODE, cpu);
2395
2396 /* Configure the CPU port to be VLAN aware */
2397 ocelot_write_gix(ocelot, ANA_PORT_VLAN_CFG_VLAN_VID(0) |
2398 ANA_PORT_VLAN_CFG_VLAN_AWARE_ENA |
2399 ANA_PORT_VLAN_CFG_VLAN_POP_CNT(1),
2400 ANA_PORT_VLAN_CFG, cpu);
2401 }
2402 EXPORT_SYMBOL(ocelot_configure_cpu);
2403
2404 int ocelot_init(struct ocelot *ocelot)
2405 {
2406 char queue_name[32];
2407 int i, ret;
2408 u32 port;
2409
2410 if (ocelot->ops->reset) {
2411 ret = ocelot->ops->reset(ocelot);
2412 if (ret) {
2413 dev_err(ocelot->dev, "Switch reset failed\n");
2414 return ret;
2415 }
2416 }
2417
2418 ocelot->lags = devm_kcalloc(ocelot->dev, ocelot->num_phys_ports,
2419 sizeof(u32), GFP_KERNEL);
2420 if (!ocelot->lags)
2421 return -ENOMEM;
2422
2423 ocelot->stats = devm_kcalloc(ocelot->dev,
2424 ocelot->num_phys_ports * ocelot->num_stats,
2425 sizeof(u64), GFP_KERNEL);
2426 if (!ocelot->stats)
2427 return -ENOMEM;
2428
2429 mutex_init(&ocelot->stats_lock);
2430 mutex_init(&ocelot->ptp_lock);
2431 spin_lock_init(&ocelot->ptp_clock_lock);
2432 snprintf(queue_name, sizeof(queue_name), "%s-stats",
2433 dev_name(ocelot->dev));
2434 ocelot->stats_queue = create_singlethread_workqueue(queue_name);
2435 if (!ocelot->stats_queue)
2436 return -ENOMEM;
2437
2438 INIT_LIST_HEAD(&ocelot->multicast);
2439 ocelot_mact_init(ocelot);
2440 ocelot_vlan_init(ocelot);
2441 ocelot_ace_init(ocelot);
2442
2443 for (port = 0; port < ocelot->num_phys_ports; port++) {
2444 /* Clear all counters (5 groups) */
2445 ocelot_write(ocelot, SYS_STAT_CFG_STAT_VIEW(port) |
2446 SYS_STAT_CFG_STAT_CLEAR_SHOT(0x7f),
2447 SYS_STAT_CFG);
2448 }
2449
2450 /* Only use S-Tag */
2451 ocelot_write(ocelot, ETH_P_8021AD, SYS_VLAN_ETYPE_CFG);
2452
2453 /* Aggregation mode */
2454 ocelot_write(ocelot, ANA_AGGR_CFG_AC_SMAC_ENA |
2455 ANA_AGGR_CFG_AC_DMAC_ENA |
2456 ANA_AGGR_CFG_AC_IP4_SIPDIP_ENA |
2457 ANA_AGGR_CFG_AC_IP4_TCPUDP_ENA, ANA_AGGR_CFG);
2458
2459 /* Set MAC age time to default value. The entry is aged after
2460 * 2*AGE_PERIOD
2461 */
2462 ocelot_write(ocelot,
2463 ANA_AUTOAGE_AGE_PERIOD(BR_DEFAULT_AGEING_TIME / 2 / HZ),
2464 ANA_AUTOAGE);
2465
2466 /* Disable learning for frames discarded by VLAN ingress filtering */
2467 regmap_field_write(ocelot->regfields[ANA_ADVLEARN_VLAN_CHK], 1);
2468
2469 /* Setup frame ageing - fixed value "2 sec" - in 6.5 us units */
2470 ocelot_write(ocelot, SYS_FRM_AGING_AGE_TX_ENA |
2471 SYS_FRM_AGING_MAX_AGE(307692), SYS_FRM_AGING);
2472
2473 /* Setup flooding PGIDs */
2474 ocelot_write_rix(ocelot, ANA_FLOODING_FLD_MULTICAST(PGID_MC) |
2475 ANA_FLOODING_FLD_BROADCAST(PGID_MC) |
2476 ANA_FLOODING_FLD_UNICAST(PGID_UC),
2477 ANA_FLOODING, 0);
2478 ocelot_write(ocelot, ANA_FLOODING_IPMC_FLD_MC6_DATA(PGID_MCIPV6) |
2479 ANA_FLOODING_IPMC_FLD_MC6_CTRL(PGID_MC) |
2480 ANA_FLOODING_IPMC_FLD_MC4_DATA(PGID_MCIPV4) |
2481 ANA_FLOODING_IPMC_FLD_MC4_CTRL(PGID_MC),
2482 ANA_FLOODING_IPMC);
2483
2484 for (port = 0; port < ocelot->num_phys_ports; port++) {
2485 /* Transmit the frame to the local port. */
2486 ocelot_write_rix(ocelot, BIT(port), ANA_PGID_PGID, port);
2487 /* Do not forward BPDU frames to the front ports. */
2488 ocelot_write_gix(ocelot,
2489 ANA_PORT_CPU_FWD_BPDU_CFG_BPDU_REDIR_ENA(0xffff),
2490 ANA_PORT_CPU_FWD_BPDU_CFG,
2491 port);
2492 /* Ensure bridging is disabled */
2493 ocelot_write_rix(ocelot, 0, ANA_PGID_PGID, PGID_SRC + port);
2494 }
2495
2496 /* Allow broadcast MAC frames. */
2497 for (i = ocelot->num_phys_ports + 1; i < PGID_CPU; i++) {
2498 u32 val = ANA_PGID_PGID_PGID(GENMASK(ocelot->num_phys_ports - 1, 0));
2499
2500 ocelot_write_rix(ocelot, val, ANA_PGID_PGID, i);
2501 }
2502 ocelot_write_rix(ocelot,
2503 ANA_PGID_PGID_PGID(GENMASK(ocelot->num_phys_ports, 0)),
2504 ANA_PGID_PGID, PGID_MC);
2505 ocelot_write_rix(ocelot, 0, ANA_PGID_PGID, PGID_MCIPV4);
2506 ocelot_write_rix(ocelot, 0, ANA_PGID_PGID, PGID_MCIPV6);
2507
2508 /* Allow manual injection via DEVCPU_QS registers, and byte swap these
2509 * registers endianness.
2510 */
2511 ocelot_write_rix(ocelot, QS_INJ_GRP_CFG_BYTE_SWAP |
2512 QS_INJ_GRP_CFG_MODE(1), QS_INJ_GRP_CFG, 0);
2513 ocelot_write_rix(ocelot, QS_XTR_GRP_CFG_BYTE_SWAP |
2514 QS_XTR_GRP_CFG_MODE(1), QS_XTR_GRP_CFG, 0);
2515 ocelot_write(ocelot, ANA_CPUQ_CFG_CPUQ_MIRROR(2) |
2516 ANA_CPUQ_CFG_CPUQ_LRN(2) |
2517 ANA_CPUQ_CFG_CPUQ_MAC_COPY(2) |
2518 ANA_CPUQ_CFG_CPUQ_SRC_COPY(2) |
2519 ANA_CPUQ_CFG_CPUQ_LOCKED_PORTMOVE(2) |
2520 ANA_CPUQ_CFG_CPUQ_ALLBRIDGE(6) |
2521 ANA_CPUQ_CFG_CPUQ_IPMC_CTRL(6) |
2522 ANA_CPUQ_CFG_CPUQ_IGMP(6) |
2523 ANA_CPUQ_CFG_CPUQ_MLD(6), ANA_CPUQ_CFG);
2524 for (i = 0; i < 16; i++)
2525 ocelot_write_rix(ocelot, ANA_CPUQ_8021_CFG_CPUQ_GARP_VAL(6) |
2526 ANA_CPUQ_8021_CFG_CPUQ_BPDU_VAL(6),
2527 ANA_CPUQ_8021_CFG, i);
2528
2529 INIT_DELAYED_WORK(&ocelot->stats_work, ocelot_check_stats_work);
2530 queue_delayed_work(ocelot->stats_queue, &ocelot->stats_work,
2531 OCELOT_STATS_CHECK_DELAY);
2532
2533 if (ocelot->ptp) {
2534 ret = ocelot_init_timestamp(ocelot);
2535 if (ret) {
2536 dev_err(ocelot->dev,
2537 "Timestamp initialization failed\n");
2538 return ret;
2539 }
2540 }
2541
2542 return 0;
2543 }
2544 EXPORT_SYMBOL(ocelot_init);
2545
2546 void ocelot_deinit(struct ocelot *ocelot)
2547 {
2548 struct ocelot_port *port;
2549 int i;
2550
2551 cancel_delayed_work(&ocelot->stats_work);
2552 destroy_workqueue(ocelot->stats_queue);
2553 mutex_destroy(&ocelot->stats_lock);
2554 if (ocelot->ptp_clock)
2555 ptp_clock_unregister(ocelot->ptp_clock);
2556
2557 for (i = 0; i < ocelot->num_phys_ports; i++) {
2558 port = ocelot->ports[i];
2559 skb_queue_purge(&port->tx_skbs);
2560 }
2561 }
2562 EXPORT_SYMBOL(ocelot_deinit);
2563
2564 MODULE_LICENSE("Dual MIT/GPL");
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