xref: /openbmc/linux/drivers/net/ethernet/microchip/lan966x/lan966x_main.c (revision f2bb566f5c977ff010baaa9e5e14d9a75b06e5f2)
1 // SPDX-License-Identifier: GPL-2.0+
2 
3 #include <linux/module.h>
4 #include <linux/if_bridge.h>
5 #include <linux/if_vlan.h>
6 #include <linux/iopoll.h>
7 #include <linux/ip.h>
8 #include <linux/of_platform.h>
9 #include <linux/of_net.h>
10 #include <linux/packing.h>
11 #include <linux/phy/phy.h>
12 #include <linux/reset.h>
13 #include <net/addrconf.h>
14 
15 #include "lan966x_main.h"
16 
17 #define XTR_EOF_0			0x00000080U
18 #define XTR_EOF_1			0x01000080U
19 #define XTR_EOF_2			0x02000080U
20 #define XTR_EOF_3			0x03000080U
21 #define XTR_PRUNED			0x04000080U
22 #define XTR_ABORT			0x05000080U
23 #define XTR_ESCAPE			0x06000080U
24 #define XTR_NOT_READY			0x07000080U
25 #define XTR_VALID_BYTES(x)		(4 - (((x) >> 24) & 3))
26 
27 #define IO_RANGES 2
28 
29 static const struct of_device_id lan966x_match[] = {
30 	{ .compatible = "microchip,lan966x-switch" },
31 	{ }
32 };
33 MODULE_DEVICE_TABLE(of, lan966x_match);
34 
35 struct lan966x_main_io_resource {
36 	enum lan966x_target id;
37 	phys_addr_t offset;
38 	int range;
39 };
40 
41 static const struct lan966x_main_io_resource lan966x_main_iomap[] =  {
42 	{ TARGET_CPU,                   0xc0000, 0 }, /* 0xe00c0000 */
43 	{ TARGET_FDMA,                  0xc0400, 0 }, /* 0xe00c0400 */
44 	{ TARGET_ORG,                         0, 1 }, /* 0xe2000000 */
45 	{ TARGET_GCB,                    0x4000, 1 }, /* 0xe2004000 */
46 	{ TARGET_QS,                     0x8000, 1 }, /* 0xe2008000 */
47 	{ TARGET_PTP,                    0xc000, 1 }, /* 0xe200c000 */
48 	{ TARGET_CHIP_TOP,              0x10000, 1 }, /* 0xe2010000 */
49 	{ TARGET_REW,                   0x14000, 1 }, /* 0xe2014000 */
50 	{ TARGET_VCAP,                  0x18000, 1 }, /* 0xe2018000 */
51 	{ TARGET_VCAP + 1,              0x20000, 1 }, /* 0xe2020000 */
52 	{ TARGET_VCAP + 2,              0x24000, 1 }, /* 0xe2024000 */
53 	{ TARGET_SYS,                   0x28000, 1 }, /* 0xe2028000 */
54 	{ TARGET_DEV,                   0x34000, 1 }, /* 0xe2034000 */
55 	{ TARGET_DEV +  1,              0x38000, 1 }, /* 0xe2038000 */
56 	{ TARGET_DEV +  2,              0x3c000, 1 }, /* 0xe203c000 */
57 	{ TARGET_DEV +  3,              0x40000, 1 }, /* 0xe2040000 */
58 	{ TARGET_DEV +  4,              0x44000, 1 }, /* 0xe2044000 */
59 	{ TARGET_DEV +  5,              0x48000, 1 }, /* 0xe2048000 */
60 	{ TARGET_DEV +  6,              0x4c000, 1 }, /* 0xe204c000 */
61 	{ TARGET_DEV +  7,              0x50000, 1 }, /* 0xe2050000 */
62 	{ TARGET_QSYS,                 0x100000, 1 }, /* 0xe2100000 */
63 	{ TARGET_AFI,                  0x120000, 1 }, /* 0xe2120000 */
64 	{ TARGET_ANA,                  0x140000, 1 }, /* 0xe2140000 */
65 };
66 
67 static int lan966x_create_targets(struct platform_device *pdev,
68 				  struct lan966x *lan966x)
69 {
70 	struct resource *iores[IO_RANGES];
71 	void __iomem *begin[IO_RANGES];
72 	int idx;
73 
74 	/* Initially map the entire range and after that update each target to
75 	 * point inside the region at the correct offset. It is possible that
76 	 * other devices access the same region so don't add any checks about
77 	 * this.
78 	 */
79 	for (idx = 0; idx < IO_RANGES; idx++) {
80 		iores[idx] = platform_get_resource(pdev, IORESOURCE_MEM,
81 						   idx);
82 		if (!iores[idx]) {
83 			dev_err(&pdev->dev, "Invalid resource\n");
84 			return -EINVAL;
85 		}
86 
87 		begin[idx] = devm_ioremap(&pdev->dev,
88 					  iores[idx]->start,
89 					  resource_size(iores[idx]));
90 		if (!begin[idx]) {
91 			dev_err(&pdev->dev, "Unable to get registers: %s\n",
92 				iores[idx]->name);
93 			return -ENOMEM;
94 		}
95 	}
96 
97 	for (idx = 0; idx < ARRAY_SIZE(lan966x_main_iomap); idx++) {
98 		const struct lan966x_main_io_resource *iomap =
99 			&lan966x_main_iomap[idx];
100 
101 		lan966x->regs[iomap->id] = begin[iomap->range] + iomap->offset;
102 	}
103 
104 	return 0;
105 }
106 
107 static bool lan966x_port_unique_address(struct net_device *dev)
108 {
109 	struct lan966x_port *port = netdev_priv(dev);
110 	struct lan966x *lan966x = port->lan966x;
111 	int p;
112 
113 	for (p = 0; p < lan966x->num_phys_ports; ++p) {
114 		port = lan966x->ports[p];
115 		if (!port || port->dev == dev)
116 			continue;
117 
118 		if (ether_addr_equal(dev->dev_addr, port->dev->dev_addr))
119 			return false;
120 	}
121 
122 	return true;
123 }
124 
125 static int lan966x_port_set_mac_address(struct net_device *dev, void *p)
126 {
127 	struct lan966x_port *port = netdev_priv(dev);
128 	struct lan966x *lan966x = port->lan966x;
129 	const struct sockaddr *addr = p;
130 	int ret;
131 
132 	if (ether_addr_equal(addr->sa_data, dev->dev_addr))
133 		return 0;
134 
135 	/* Learn the new net device MAC address in the mac table. */
136 	ret = lan966x_mac_cpu_learn(lan966x, addr->sa_data, HOST_PVID);
137 	if (ret)
138 		return ret;
139 
140 	/* If there is another port with the same address as the dev, then don't
141 	 * delete it from the MAC table
142 	 */
143 	if (!lan966x_port_unique_address(dev))
144 		goto out;
145 
146 	/* Then forget the previous one. */
147 	ret = lan966x_mac_cpu_forget(lan966x, dev->dev_addr, HOST_PVID);
148 	if (ret)
149 		return ret;
150 
151 out:
152 	eth_hw_addr_set(dev, addr->sa_data);
153 	return ret;
154 }
155 
156 static int lan966x_port_get_phys_port_name(struct net_device *dev,
157 					   char *buf, size_t len)
158 {
159 	struct lan966x_port *port = netdev_priv(dev);
160 	int ret;
161 
162 	ret = snprintf(buf, len, "p%d", port->chip_port);
163 	if (ret >= len)
164 		return -EINVAL;
165 
166 	return 0;
167 }
168 
169 static int lan966x_port_open(struct net_device *dev)
170 {
171 	struct lan966x_port *port = netdev_priv(dev);
172 	struct lan966x *lan966x = port->lan966x;
173 	int err;
174 
175 	/* Enable receiving frames on the port, and activate auto-learning of
176 	 * MAC addresses.
177 	 */
178 	lan_rmw(ANA_PORT_CFG_LEARNAUTO_SET(1) |
179 		ANA_PORT_CFG_RECV_ENA_SET(1) |
180 		ANA_PORT_CFG_PORTID_VAL_SET(port->chip_port),
181 		ANA_PORT_CFG_LEARNAUTO |
182 		ANA_PORT_CFG_RECV_ENA |
183 		ANA_PORT_CFG_PORTID_VAL,
184 		lan966x, ANA_PORT_CFG(port->chip_port));
185 
186 	err = phylink_fwnode_phy_connect(port->phylink, port->fwnode, 0);
187 	if (err) {
188 		netdev_err(dev, "Could not attach to PHY\n");
189 		return err;
190 	}
191 
192 	phylink_start(port->phylink);
193 
194 	return 0;
195 }
196 
197 static int lan966x_port_stop(struct net_device *dev)
198 {
199 	struct lan966x_port *port = netdev_priv(dev);
200 
201 	lan966x_port_config_down(port);
202 	phylink_stop(port->phylink);
203 	phylink_disconnect_phy(port->phylink);
204 
205 	return 0;
206 }
207 
208 static int lan966x_port_inj_status(struct lan966x *lan966x)
209 {
210 	return lan_rd(lan966x, QS_INJ_STATUS);
211 }
212 
213 static int lan966x_port_inj_ready(struct lan966x *lan966x, u8 grp)
214 {
215 	u32 val;
216 
217 	if (lan_rd(lan966x, QS_INJ_STATUS) & QS_INJ_STATUS_FIFO_RDY_SET(BIT(grp)))
218 		return 0;
219 
220 	return readx_poll_timeout_atomic(lan966x_port_inj_status, lan966x, val,
221 					 QS_INJ_STATUS_FIFO_RDY_GET(val) & BIT(grp),
222 					 READL_SLEEP_US, READL_TIMEOUT_US);
223 }
224 
225 static int lan966x_port_ifh_xmit(struct sk_buff *skb,
226 				 __be32 *ifh,
227 				 struct net_device *dev)
228 {
229 	struct lan966x_port *port = netdev_priv(dev);
230 	struct lan966x *lan966x = port->lan966x;
231 	u32 i, count, last;
232 	u8 grp = 0;
233 	u32 val;
234 	int err;
235 
236 	val = lan_rd(lan966x, QS_INJ_STATUS);
237 	if (!(QS_INJ_STATUS_FIFO_RDY_GET(val) & BIT(grp)) ||
238 	    (QS_INJ_STATUS_WMARK_REACHED_GET(val) & BIT(grp)))
239 		goto err;
240 
241 	/* Write start of frame */
242 	lan_wr(QS_INJ_CTRL_GAP_SIZE_SET(1) |
243 	       QS_INJ_CTRL_SOF_SET(1),
244 	       lan966x, QS_INJ_CTRL(grp));
245 
246 	/* Write IFH header */
247 	for (i = 0; i < IFH_LEN; ++i) {
248 		/* Wait until the fifo is ready */
249 		err = lan966x_port_inj_ready(lan966x, grp);
250 		if (err)
251 			goto err;
252 
253 		lan_wr((__force u32)ifh[i], lan966x, QS_INJ_WR(grp));
254 	}
255 
256 	/* Write frame */
257 	count = DIV_ROUND_UP(skb->len, 4);
258 	last = skb->len % 4;
259 	for (i = 0; i < count; ++i) {
260 		/* Wait until the fifo is ready */
261 		err = lan966x_port_inj_ready(lan966x, grp);
262 		if (err)
263 			goto err;
264 
265 		lan_wr(((u32 *)skb->data)[i], lan966x, QS_INJ_WR(grp));
266 	}
267 
268 	/* Add padding */
269 	while (i < (LAN966X_BUFFER_MIN_SZ / 4)) {
270 		/* Wait until the fifo is ready */
271 		err = lan966x_port_inj_ready(lan966x, grp);
272 		if (err)
273 			goto err;
274 
275 		lan_wr(0, lan966x, QS_INJ_WR(grp));
276 		++i;
277 	}
278 
279 	/* Inidcate EOF and valid bytes in the last word */
280 	lan_wr(QS_INJ_CTRL_GAP_SIZE_SET(1) |
281 	       QS_INJ_CTRL_VLD_BYTES_SET(skb->len < LAN966X_BUFFER_MIN_SZ ?
282 				     0 : last) |
283 	       QS_INJ_CTRL_EOF_SET(1),
284 	       lan966x, QS_INJ_CTRL(grp));
285 
286 	/* Add dummy CRC */
287 	lan_wr(0, lan966x, QS_INJ_WR(grp));
288 	skb_tx_timestamp(skb);
289 
290 	dev->stats.tx_packets++;
291 	dev->stats.tx_bytes += skb->len;
292 
293 	if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP &&
294 	    LAN966X_SKB_CB(skb)->rew_op == IFH_REW_OP_TWO_STEP_PTP)
295 		return NETDEV_TX_OK;
296 
297 	dev_consume_skb_any(skb);
298 	return NETDEV_TX_OK;
299 
300 err:
301 	if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP &&
302 	    LAN966X_SKB_CB(skb)->rew_op == IFH_REW_OP_TWO_STEP_PTP)
303 		lan966x_ptp_txtstamp_release(port, skb);
304 
305 	return NETDEV_TX_BUSY;
306 }
307 
308 void lan966x_ifh_set_bypass(void *ifh, u64 bypass)
309 {
310 	packing(ifh, &bypass, IFH_POS_BYPASS + IFH_WID_BYPASS - 1,
311 		IFH_POS_BYPASS, IFH_LEN * 4, PACK, 0);
312 }
313 
314 void lan966x_ifh_set_port(void *ifh, u64 bypass)
315 {
316 	packing(ifh, &bypass, IFH_POS_DSTS + IFH_WID_DSTS - 1,
317 		IFH_POS_DSTS, IFH_LEN * 4, PACK, 0);
318 }
319 
320 static void lan966x_ifh_set_qos_class(void *ifh, u64 bypass)
321 {
322 	packing(ifh, &bypass, IFH_POS_QOS_CLASS + IFH_WID_QOS_CLASS - 1,
323 		IFH_POS_QOS_CLASS, IFH_LEN * 4, PACK, 0);
324 }
325 
326 static void lan966x_ifh_set_ipv(void *ifh, u64 bypass)
327 {
328 	packing(ifh, &bypass, IFH_POS_IPV + IFH_WID_IPV - 1,
329 		IFH_POS_IPV, IFH_LEN * 4, PACK, 0);
330 }
331 
332 static void lan966x_ifh_set_vid(void *ifh, u64 vid)
333 {
334 	packing(ifh, &vid, IFH_POS_TCI + IFH_WID_TCI - 1,
335 		IFH_POS_TCI, IFH_LEN * 4, PACK, 0);
336 }
337 
338 static void lan966x_ifh_set_rew_op(void *ifh, u64 rew_op)
339 {
340 	packing(ifh, &rew_op, IFH_POS_REW_CMD + IFH_WID_REW_CMD - 1,
341 		IFH_POS_REW_CMD, IFH_LEN * 4, PACK, 0);
342 }
343 
344 static void lan966x_ifh_set_timestamp(void *ifh, u64 timestamp)
345 {
346 	packing(ifh, &timestamp, IFH_POS_TIMESTAMP + IFH_WID_TIMESTAMP - 1,
347 		IFH_POS_TIMESTAMP, IFH_LEN * 4, PACK, 0);
348 }
349 
350 static netdev_tx_t lan966x_port_xmit(struct sk_buff *skb,
351 				     struct net_device *dev)
352 {
353 	struct lan966x_port *port = netdev_priv(dev);
354 	struct lan966x *lan966x = port->lan966x;
355 	__be32 ifh[IFH_LEN];
356 	int err;
357 
358 	memset(ifh, 0x0, sizeof(__be32) * IFH_LEN);
359 
360 	lan966x_ifh_set_bypass(ifh, 1);
361 	lan966x_ifh_set_port(ifh, BIT_ULL(port->chip_port));
362 	lan966x_ifh_set_qos_class(ifh, skb->priority >= 7 ? 0x7 : skb->priority);
363 	lan966x_ifh_set_ipv(ifh, skb->priority >= 7 ? 0x7 : skb->priority);
364 	lan966x_ifh_set_vid(ifh, skb_vlan_tag_get(skb));
365 
366 	if (port->lan966x->ptp && skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) {
367 		err = lan966x_ptp_txtstamp_request(port, skb);
368 		if (err)
369 			return err;
370 
371 		lan966x_ifh_set_rew_op(ifh, LAN966X_SKB_CB(skb)->rew_op);
372 		lan966x_ifh_set_timestamp(ifh, LAN966X_SKB_CB(skb)->ts_id);
373 	}
374 
375 	spin_lock(&lan966x->tx_lock);
376 	if (port->lan966x->fdma)
377 		err = lan966x_fdma_xmit(skb, ifh, dev);
378 	else
379 		err = lan966x_port_ifh_xmit(skb, ifh, dev);
380 	spin_unlock(&lan966x->tx_lock);
381 
382 	return err;
383 }
384 
385 static int lan966x_port_change_mtu(struct net_device *dev, int new_mtu)
386 {
387 	struct lan966x_port *port = netdev_priv(dev);
388 	struct lan966x *lan966x = port->lan966x;
389 	int old_mtu = dev->mtu;
390 	int err;
391 
392 	lan_wr(DEV_MAC_MAXLEN_CFG_MAX_LEN_SET(LAN966X_HW_MTU(new_mtu)),
393 	       lan966x, DEV_MAC_MAXLEN_CFG(port->chip_port));
394 	dev->mtu = new_mtu;
395 
396 	if (!lan966x->fdma)
397 		return 0;
398 
399 	err = lan966x_fdma_change_mtu(lan966x);
400 	if (err) {
401 		lan_wr(DEV_MAC_MAXLEN_CFG_MAX_LEN_SET(LAN966X_HW_MTU(old_mtu)),
402 		       lan966x, DEV_MAC_MAXLEN_CFG(port->chip_port));
403 		dev->mtu = old_mtu;
404 	}
405 
406 	return err;
407 }
408 
409 static int lan966x_mc_unsync(struct net_device *dev, const unsigned char *addr)
410 {
411 	struct lan966x_port *port = netdev_priv(dev);
412 	struct lan966x *lan966x = port->lan966x;
413 
414 	return lan966x_mac_forget(lan966x, addr, HOST_PVID, ENTRYTYPE_LOCKED);
415 }
416 
417 static int lan966x_mc_sync(struct net_device *dev, const unsigned char *addr)
418 {
419 	struct lan966x_port *port = netdev_priv(dev);
420 	struct lan966x *lan966x = port->lan966x;
421 
422 	return lan966x_mac_cpu_learn(lan966x, addr, HOST_PVID);
423 }
424 
425 static void lan966x_port_set_rx_mode(struct net_device *dev)
426 {
427 	__dev_mc_sync(dev, lan966x_mc_sync, lan966x_mc_unsync);
428 }
429 
430 static int lan966x_port_get_parent_id(struct net_device *dev,
431 				      struct netdev_phys_item_id *ppid)
432 {
433 	struct lan966x_port *port = netdev_priv(dev);
434 	struct lan966x *lan966x = port->lan966x;
435 
436 	ppid->id_len = sizeof(lan966x->base_mac);
437 	memcpy(&ppid->id, &lan966x->base_mac, ppid->id_len);
438 
439 	return 0;
440 }
441 
442 static int lan966x_port_ioctl(struct net_device *dev, struct ifreq *ifr,
443 			      int cmd)
444 {
445 	struct lan966x_port *port = netdev_priv(dev);
446 
447 	if (!phy_has_hwtstamp(dev->phydev) && port->lan966x->ptp) {
448 		switch (cmd) {
449 		case SIOCSHWTSTAMP:
450 			return lan966x_ptp_hwtstamp_set(port, ifr);
451 		case SIOCGHWTSTAMP:
452 			return lan966x_ptp_hwtstamp_get(port, ifr);
453 		}
454 	}
455 
456 	if (!dev->phydev)
457 		return -ENODEV;
458 
459 	return phy_mii_ioctl(dev->phydev, ifr, cmd);
460 }
461 
462 static const struct net_device_ops lan966x_port_netdev_ops = {
463 	.ndo_open			= lan966x_port_open,
464 	.ndo_stop			= lan966x_port_stop,
465 	.ndo_start_xmit			= lan966x_port_xmit,
466 	.ndo_change_mtu			= lan966x_port_change_mtu,
467 	.ndo_set_rx_mode		= lan966x_port_set_rx_mode,
468 	.ndo_get_phys_port_name		= lan966x_port_get_phys_port_name,
469 	.ndo_get_stats64		= lan966x_stats_get,
470 	.ndo_set_mac_address		= lan966x_port_set_mac_address,
471 	.ndo_get_port_parent_id		= lan966x_port_get_parent_id,
472 	.ndo_eth_ioctl			= lan966x_port_ioctl,
473 	.ndo_setup_tc			= lan966x_tc_setup,
474 	.ndo_bpf			= lan966x_xdp,
475 	.ndo_xdp_xmit			= lan966x_xdp_xmit,
476 };
477 
478 bool lan966x_netdevice_check(const struct net_device *dev)
479 {
480 	return dev->netdev_ops == &lan966x_port_netdev_ops;
481 }
482 
483 bool lan966x_hw_offload(struct lan966x *lan966x, u32 port, struct sk_buff *skb)
484 {
485 	u32 val;
486 
487 	/* The IGMP and MLD frames are not forward by the HW if
488 	 * multicast snooping is enabled, therefor don't mark as
489 	 * offload to allow the SW to forward the frames accordingly.
490 	 */
491 	val = lan_rd(lan966x, ANA_CPU_FWD_CFG(port));
492 	if (!(val & (ANA_CPU_FWD_CFG_IGMP_REDIR_ENA |
493 		     ANA_CPU_FWD_CFG_MLD_REDIR_ENA)))
494 		return true;
495 
496 	if (eth_type_vlan(skb->protocol)) {
497 		skb = skb_vlan_untag(skb);
498 		if (unlikely(!skb))
499 			return false;
500 	}
501 
502 	if (skb->protocol == htons(ETH_P_IP) &&
503 	    ip_hdr(skb)->protocol == IPPROTO_IGMP)
504 		return false;
505 
506 	if (IS_ENABLED(CONFIG_IPV6) &&
507 	    skb->protocol == htons(ETH_P_IPV6) &&
508 	    ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr) &&
509 	    !ipv6_mc_check_mld(skb))
510 		return false;
511 
512 	return true;
513 }
514 
515 static int lan966x_port_xtr_status(struct lan966x *lan966x, u8 grp)
516 {
517 	return lan_rd(lan966x, QS_XTR_RD(grp));
518 }
519 
520 static int lan966x_port_xtr_ready(struct lan966x *lan966x, u8 grp)
521 {
522 	u32 val;
523 
524 	return read_poll_timeout(lan966x_port_xtr_status, val,
525 				 val != XTR_NOT_READY,
526 				 READL_SLEEP_US, READL_TIMEOUT_US, false,
527 				 lan966x, grp);
528 }
529 
530 static int lan966x_rx_frame_word(struct lan966x *lan966x, u8 grp, u32 *rval)
531 {
532 	u32 bytes_valid;
533 	u32 val;
534 	int err;
535 
536 	val = lan_rd(lan966x, QS_XTR_RD(grp));
537 	if (val == XTR_NOT_READY) {
538 		err = lan966x_port_xtr_ready(lan966x, grp);
539 		if (err)
540 			return -EIO;
541 	}
542 
543 	switch (val) {
544 	case XTR_ABORT:
545 		return -EIO;
546 	case XTR_EOF_0:
547 	case XTR_EOF_1:
548 	case XTR_EOF_2:
549 	case XTR_EOF_3:
550 	case XTR_PRUNED:
551 		bytes_valid = XTR_VALID_BYTES(val);
552 		val = lan_rd(lan966x, QS_XTR_RD(grp));
553 		if (val == XTR_ESCAPE)
554 			*rval = lan_rd(lan966x, QS_XTR_RD(grp));
555 		else
556 			*rval = val;
557 
558 		return bytes_valid;
559 	case XTR_ESCAPE:
560 		*rval = lan_rd(lan966x, QS_XTR_RD(grp));
561 
562 		return 4;
563 	default:
564 		*rval = val;
565 
566 		return 4;
567 	}
568 }
569 
570 void lan966x_ifh_get_src_port(void *ifh, u64 *src_port)
571 {
572 	packing(ifh, src_port, IFH_POS_SRCPORT + IFH_WID_SRCPORT - 1,
573 		IFH_POS_SRCPORT, IFH_LEN * 4, UNPACK, 0);
574 }
575 
576 static void lan966x_ifh_get_len(void *ifh, u64 *len)
577 {
578 	packing(ifh, len, IFH_POS_LEN + IFH_WID_LEN - 1,
579 		IFH_POS_LEN, IFH_LEN * 4, UNPACK, 0);
580 }
581 
582 void lan966x_ifh_get_timestamp(void *ifh, u64 *timestamp)
583 {
584 	packing(ifh, timestamp, IFH_POS_TIMESTAMP + IFH_WID_TIMESTAMP - 1,
585 		IFH_POS_TIMESTAMP, IFH_LEN * 4, UNPACK, 0);
586 }
587 
588 static irqreturn_t lan966x_xtr_irq_handler(int irq, void *args)
589 {
590 	struct lan966x *lan966x = args;
591 	int i, grp = 0, err = 0;
592 
593 	if (!(lan_rd(lan966x, QS_XTR_DATA_PRESENT) & BIT(grp)))
594 		return IRQ_NONE;
595 
596 	do {
597 		u64 src_port, len, timestamp;
598 		struct net_device *dev;
599 		struct sk_buff *skb;
600 		int sz = 0, buf_len;
601 		u32 ifh[IFH_LEN];
602 		u32 *buf;
603 		u32 val;
604 
605 		for (i = 0; i < IFH_LEN; i++) {
606 			err = lan966x_rx_frame_word(lan966x, grp, &ifh[i]);
607 			if (err != 4)
608 				goto recover;
609 		}
610 
611 		err = 0;
612 
613 		lan966x_ifh_get_src_port(ifh, &src_port);
614 		lan966x_ifh_get_len(ifh, &len);
615 		lan966x_ifh_get_timestamp(ifh, &timestamp);
616 
617 		WARN_ON(src_port >= lan966x->num_phys_ports);
618 
619 		dev = lan966x->ports[src_port]->dev;
620 		skb = netdev_alloc_skb(dev, len);
621 		if (unlikely(!skb)) {
622 			netdev_err(dev, "Unable to allocate sk_buff\n");
623 			err = -ENOMEM;
624 			break;
625 		}
626 		buf_len = len - ETH_FCS_LEN;
627 		buf = (u32 *)skb_put(skb, buf_len);
628 
629 		len = 0;
630 		do {
631 			sz = lan966x_rx_frame_word(lan966x, grp, &val);
632 			if (sz < 0) {
633 				kfree_skb(skb);
634 				goto recover;
635 			}
636 
637 			*buf++ = val;
638 			len += sz;
639 		} while (len < buf_len);
640 
641 		/* Read the FCS */
642 		sz = lan966x_rx_frame_word(lan966x, grp, &val);
643 		if (sz < 0) {
644 			kfree_skb(skb);
645 			goto recover;
646 		}
647 
648 		/* Update the statistics if part of the FCS was read before */
649 		len -= ETH_FCS_LEN - sz;
650 
651 		if (unlikely(dev->features & NETIF_F_RXFCS)) {
652 			buf = (u32 *)skb_put(skb, ETH_FCS_LEN);
653 			*buf = val;
654 		}
655 
656 		lan966x_ptp_rxtstamp(lan966x, skb, timestamp);
657 		skb->protocol = eth_type_trans(skb, dev);
658 
659 		if (lan966x->bridge_mask & BIT(src_port)) {
660 			skb->offload_fwd_mark = 1;
661 
662 			skb_reset_network_header(skb);
663 			if (!lan966x_hw_offload(lan966x, src_port, skb))
664 				skb->offload_fwd_mark = 0;
665 		}
666 
667 		if (!skb_defer_rx_timestamp(skb))
668 			netif_rx(skb);
669 
670 		dev->stats.rx_bytes += len;
671 		dev->stats.rx_packets++;
672 
673 recover:
674 		if (sz < 0 || err)
675 			lan_rd(lan966x, QS_XTR_RD(grp));
676 
677 	} while (lan_rd(lan966x, QS_XTR_DATA_PRESENT) & BIT(grp));
678 
679 	return IRQ_HANDLED;
680 }
681 
682 static irqreturn_t lan966x_ana_irq_handler(int irq, void *args)
683 {
684 	struct lan966x *lan966x = args;
685 
686 	return lan966x_mac_irq_handler(lan966x);
687 }
688 
689 static void lan966x_cleanup_ports(struct lan966x *lan966x)
690 {
691 	struct lan966x_port *port;
692 	int p;
693 
694 	for (p = 0; p < lan966x->num_phys_ports; p++) {
695 		port = lan966x->ports[p];
696 		if (!port)
697 			continue;
698 
699 		if (port->dev)
700 			unregister_netdev(port->dev);
701 
702 		lan966x_xdp_port_deinit(port);
703 		if (lan966x->fdma && lan966x->fdma_ndev == port->dev)
704 			lan966x_fdma_netdev_deinit(lan966x, port->dev);
705 
706 		if (port->phylink) {
707 			rtnl_lock();
708 			lan966x_port_stop(port->dev);
709 			rtnl_unlock();
710 			phylink_destroy(port->phylink);
711 			port->phylink = NULL;
712 		}
713 
714 		if (port->fwnode)
715 			fwnode_handle_put(port->fwnode);
716 	}
717 
718 	disable_irq(lan966x->xtr_irq);
719 	lan966x->xtr_irq = -ENXIO;
720 
721 	if (lan966x->ana_irq > 0) {
722 		disable_irq(lan966x->ana_irq);
723 		lan966x->ana_irq = -ENXIO;
724 	}
725 
726 	if (lan966x->fdma)
727 		devm_free_irq(lan966x->dev, lan966x->fdma_irq, lan966x);
728 
729 	if (lan966x->ptp_irq > 0)
730 		devm_free_irq(lan966x->dev, lan966x->ptp_irq, lan966x);
731 
732 	if (lan966x->ptp_ext_irq > 0)
733 		devm_free_irq(lan966x->dev, lan966x->ptp_ext_irq, lan966x);
734 }
735 
736 static int lan966x_probe_port(struct lan966x *lan966x, u32 p,
737 			      phy_interface_t phy_mode,
738 			      struct fwnode_handle *portnp)
739 {
740 	struct lan966x_port *port;
741 	struct phylink *phylink;
742 	struct net_device *dev;
743 	int err;
744 
745 	if (p >= lan966x->num_phys_ports)
746 		return -EINVAL;
747 
748 	dev = devm_alloc_etherdev_mqs(lan966x->dev,
749 				      sizeof(struct lan966x_port),
750 				      NUM_PRIO_QUEUES, 1);
751 	if (!dev)
752 		return -ENOMEM;
753 
754 	SET_NETDEV_DEV(dev, lan966x->dev);
755 	port = netdev_priv(dev);
756 	port->dev = dev;
757 	port->lan966x = lan966x;
758 	port->chip_port = p;
759 	lan966x->ports[p] = port;
760 
761 	dev->max_mtu = ETH_MAX_MTU;
762 
763 	dev->netdev_ops = &lan966x_port_netdev_ops;
764 	dev->ethtool_ops = &lan966x_ethtool_ops;
765 	dev->features |= NETIF_F_HW_VLAN_CTAG_TX |
766 			 NETIF_F_HW_VLAN_STAG_TX |
767 			 NETIF_F_HW_TC;
768 	dev->hw_features |= NETIF_F_HW_TC;
769 	dev->needed_headroom = IFH_LEN_BYTES;
770 
771 	eth_hw_addr_gen(dev, lan966x->base_mac, p + 1);
772 
773 	lan966x_mac_learn(lan966x, PGID_CPU, dev->dev_addr, HOST_PVID,
774 			  ENTRYTYPE_LOCKED);
775 
776 	port->phylink_config.dev = &port->dev->dev;
777 	port->phylink_config.type = PHYLINK_NETDEV;
778 	port->phylink_pcs.poll = true;
779 	port->phylink_pcs.ops = &lan966x_phylink_pcs_ops;
780 
781 	port->phylink_config.mac_capabilities = MAC_ASYM_PAUSE | MAC_SYM_PAUSE |
782 		MAC_10 | MAC_100 | MAC_1000FD | MAC_2500FD;
783 
784 	phy_interface_set_rgmii(port->phylink_config.supported_interfaces);
785 	__set_bit(PHY_INTERFACE_MODE_MII,
786 		  port->phylink_config.supported_interfaces);
787 	__set_bit(PHY_INTERFACE_MODE_GMII,
788 		  port->phylink_config.supported_interfaces);
789 	__set_bit(PHY_INTERFACE_MODE_SGMII,
790 		  port->phylink_config.supported_interfaces);
791 	__set_bit(PHY_INTERFACE_MODE_QSGMII,
792 		  port->phylink_config.supported_interfaces);
793 	__set_bit(PHY_INTERFACE_MODE_QUSGMII,
794 		  port->phylink_config.supported_interfaces);
795 	__set_bit(PHY_INTERFACE_MODE_1000BASEX,
796 		  port->phylink_config.supported_interfaces);
797 	__set_bit(PHY_INTERFACE_MODE_2500BASEX,
798 		  port->phylink_config.supported_interfaces);
799 
800 	phylink = phylink_create(&port->phylink_config,
801 				 portnp,
802 				 phy_mode,
803 				 &lan966x_phylink_mac_ops);
804 	if (IS_ERR(phylink)) {
805 		port->dev = NULL;
806 		return PTR_ERR(phylink);
807 	}
808 
809 	port->phylink = phylink;
810 
811 	err = register_netdev(dev);
812 	if (err) {
813 		dev_err(lan966x->dev, "register_netdev failed\n");
814 		return err;
815 	}
816 
817 	lan966x_vlan_port_set_vlan_aware(port, 0);
818 	lan966x_vlan_port_set_vid(port, HOST_PVID, false, false);
819 	lan966x_vlan_port_apply(port);
820 
821 	return 0;
822 }
823 
824 static void lan966x_init(struct lan966x *lan966x)
825 {
826 	u32 p, i;
827 
828 	/* MAC table initialization */
829 	lan966x_mac_init(lan966x);
830 
831 	lan966x_vlan_init(lan966x);
832 
833 	/* Flush queues */
834 	lan_wr(lan_rd(lan966x, QS_XTR_FLUSH) |
835 	       GENMASK(1, 0),
836 	       lan966x, QS_XTR_FLUSH);
837 
838 	/* Allow to drain */
839 	mdelay(1);
840 
841 	/* All Queues normal */
842 	lan_wr(lan_rd(lan966x, QS_XTR_FLUSH) &
843 	       ~(GENMASK(1, 0)),
844 	       lan966x, QS_XTR_FLUSH);
845 
846 	/* Set MAC age time to default value, the entry is aged after
847 	 * 2 * AGE_PERIOD
848 	 */
849 	lan_wr(ANA_AUTOAGE_AGE_PERIOD_SET(BR_DEFAULT_AGEING_TIME / 2 / HZ),
850 	       lan966x, ANA_AUTOAGE);
851 
852 	/* Disable learning for frames discarded by VLAN ingress filtering */
853 	lan_rmw(ANA_ADVLEARN_VLAN_CHK_SET(1),
854 		ANA_ADVLEARN_VLAN_CHK,
855 		lan966x, ANA_ADVLEARN);
856 
857 	/* Setup frame ageing - "2 sec" - The unit is 6.5 us on lan966x */
858 	lan_wr(SYS_FRM_AGING_AGE_TX_ENA_SET(1) |
859 	       (20000000 / 65),
860 	       lan966x,  SYS_FRM_AGING);
861 
862 	/* Map the 8 CPU extraction queues to CPU port */
863 	lan_wr(0, lan966x, QSYS_CPU_GROUP_MAP);
864 
865 	/* Do byte-swap and expect status after last data word
866 	 * Extraction: Mode: manual extraction) | Byte_swap
867 	 */
868 	lan_wr(QS_XTR_GRP_CFG_MODE_SET(lan966x->fdma ? 2 : 1) |
869 	       QS_XTR_GRP_CFG_BYTE_SWAP_SET(1),
870 	       lan966x, QS_XTR_GRP_CFG(0));
871 
872 	/* Injection: Mode: manual injection | Byte_swap */
873 	lan_wr(QS_INJ_GRP_CFG_MODE_SET(lan966x->fdma ? 2 : 1) |
874 	       QS_INJ_GRP_CFG_BYTE_SWAP_SET(1),
875 	       lan966x, QS_INJ_GRP_CFG(0));
876 
877 	lan_rmw(QS_INJ_CTRL_GAP_SIZE_SET(0),
878 		QS_INJ_CTRL_GAP_SIZE,
879 		lan966x, QS_INJ_CTRL(0));
880 
881 	/* Enable IFH insertion/parsing on CPU ports */
882 	lan_wr(SYS_PORT_MODE_INCL_INJ_HDR_SET(1) |
883 	       SYS_PORT_MODE_INCL_XTR_HDR_SET(1),
884 	       lan966x, SYS_PORT_MODE(CPU_PORT));
885 
886 	/* Setup flooding PGIDs */
887 	lan_wr(ANA_FLOODING_IPMC_FLD_MC4_DATA_SET(PGID_MCIPV4) |
888 	       ANA_FLOODING_IPMC_FLD_MC4_CTRL_SET(PGID_MC) |
889 	       ANA_FLOODING_IPMC_FLD_MC6_DATA_SET(PGID_MCIPV6) |
890 	       ANA_FLOODING_IPMC_FLD_MC6_CTRL_SET(PGID_MC),
891 	       lan966x, ANA_FLOODING_IPMC);
892 
893 	/* There are 8 priorities */
894 	for (i = 0; i < 8; ++i)
895 		lan_rmw(ANA_FLOODING_FLD_MULTICAST_SET(PGID_MC) |
896 			ANA_FLOODING_FLD_UNICAST_SET(PGID_UC) |
897 			ANA_FLOODING_FLD_BROADCAST_SET(PGID_BC),
898 			ANA_FLOODING_FLD_MULTICAST |
899 			ANA_FLOODING_FLD_UNICAST |
900 			ANA_FLOODING_FLD_BROADCAST,
901 			lan966x, ANA_FLOODING(i));
902 
903 	for (i = 0; i < PGID_ENTRIES; ++i)
904 		/* Set all the entries to obey VLAN_VLAN */
905 		lan_rmw(ANA_PGID_CFG_OBEY_VLAN_SET(1),
906 			ANA_PGID_CFG_OBEY_VLAN,
907 			lan966x, ANA_PGID_CFG(i));
908 
909 	for (p = 0; p < lan966x->num_phys_ports; p++) {
910 		/* Disable bridging by default */
911 		lan_rmw(ANA_PGID_PGID_SET(0x0),
912 			ANA_PGID_PGID,
913 			lan966x, ANA_PGID(p + PGID_SRC));
914 
915 		/* Do not forward BPDU frames to the front ports and copy them
916 		 * to CPU
917 		 */
918 		lan_wr(0xffff, lan966x, ANA_CPU_FWD_BPDU_CFG(p));
919 	}
920 
921 	/* Set source buffer size for each priority and each port to 1500 bytes */
922 	for (i = 0; i <= QSYS_Q_RSRV; ++i) {
923 		lan_wr(1500 / 64, lan966x, QSYS_RES_CFG(i));
924 		lan_wr(1500 / 64, lan966x, QSYS_RES_CFG(512 + i));
925 	}
926 
927 	/* Enable switching to/from cpu port */
928 	lan_wr(QSYS_SW_PORT_MODE_PORT_ENA_SET(1) |
929 	       QSYS_SW_PORT_MODE_SCH_NEXT_CFG_SET(1) |
930 	       QSYS_SW_PORT_MODE_INGRESS_DROP_MODE_SET(1),
931 	       lan966x,  QSYS_SW_PORT_MODE(CPU_PORT));
932 
933 	/* Configure and enable the CPU port */
934 	lan_rmw(ANA_PGID_PGID_SET(0),
935 		ANA_PGID_PGID,
936 		lan966x, ANA_PGID(CPU_PORT));
937 	lan_rmw(ANA_PGID_PGID_SET(BIT(CPU_PORT)),
938 		ANA_PGID_PGID,
939 		lan966x, ANA_PGID(PGID_CPU));
940 
941 	/* Multicast to all other ports */
942 	lan_rmw(GENMASK(lan966x->num_phys_ports - 1, 0),
943 		ANA_PGID_PGID,
944 		lan966x, ANA_PGID(PGID_MC));
945 
946 	/* This will be controlled by mrouter ports */
947 	lan_rmw(GENMASK(lan966x->num_phys_ports - 1, 0),
948 		ANA_PGID_PGID,
949 		lan966x, ANA_PGID(PGID_MCIPV4));
950 
951 	lan_rmw(GENMASK(lan966x->num_phys_ports - 1, 0),
952 		ANA_PGID_PGID,
953 		lan966x, ANA_PGID(PGID_MCIPV6));
954 
955 	/* Unicast to all other ports */
956 	lan_rmw(GENMASK(lan966x->num_phys_ports - 1, 0),
957 		ANA_PGID_PGID,
958 		lan966x, ANA_PGID(PGID_UC));
959 
960 	/* Broadcast to the CPU port and to other ports */
961 	lan_rmw(ANA_PGID_PGID_SET(BIT(CPU_PORT) | GENMASK(lan966x->num_phys_ports - 1, 0)),
962 		ANA_PGID_PGID,
963 		lan966x, ANA_PGID(PGID_BC));
964 
965 	lan_wr(REW_PORT_CFG_NO_REWRITE_SET(1),
966 	       lan966x, REW_PORT_CFG(CPU_PORT));
967 
968 	lan_rmw(ANA_ANAINTR_INTR_ENA_SET(1),
969 		ANA_ANAINTR_INTR_ENA,
970 		lan966x, ANA_ANAINTR);
971 
972 	spin_lock_init(&lan966x->tx_lock);
973 
974 	lan966x_taprio_init(lan966x);
975 }
976 
977 static int lan966x_ram_init(struct lan966x *lan966x)
978 {
979 	return lan_rd(lan966x, SYS_RAM_INIT);
980 }
981 
982 static int lan966x_reset_switch(struct lan966x *lan966x)
983 {
984 	struct reset_control *switch_reset;
985 	int val = 0;
986 	int ret;
987 
988 	switch_reset = devm_reset_control_get_optional_shared(lan966x->dev,
989 							      "switch");
990 	if (IS_ERR(switch_reset))
991 		return dev_err_probe(lan966x->dev, PTR_ERR(switch_reset),
992 				     "Could not obtain switch reset");
993 
994 	reset_control_reset(switch_reset);
995 
996 	lan_wr(SYS_RESET_CFG_CORE_ENA_SET(0), lan966x, SYS_RESET_CFG);
997 	lan_wr(SYS_RAM_INIT_RAM_INIT_SET(1), lan966x, SYS_RAM_INIT);
998 	ret = readx_poll_timeout(lan966x_ram_init, lan966x,
999 				 val, (val & BIT(1)) == 0, READL_SLEEP_US,
1000 				 READL_TIMEOUT_US);
1001 	if (ret)
1002 		return ret;
1003 
1004 	lan_wr(SYS_RESET_CFG_CORE_ENA_SET(1), lan966x, SYS_RESET_CFG);
1005 
1006 	return 0;
1007 }
1008 
1009 static int lan966x_probe(struct platform_device *pdev)
1010 {
1011 	struct fwnode_handle *ports, *portnp;
1012 	struct lan966x *lan966x;
1013 	u8 mac_addr[ETH_ALEN];
1014 	int err;
1015 
1016 	lan966x = devm_kzalloc(&pdev->dev, sizeof(*lan966x), GFP_KERNEL);
1017 	if (!lan966x)
1018 		return -ENOMEM;
1019 
1020 	platform_set_drvdata(pdev, lan966x);
1021 	lan966x->dev = &pdev->dev;
1022 
1023 	if (!device_get_mac_address(&pdev->dev, mac_addr)) {
1024 		ether_addr_copy(lan966x->base_mac, mac_addr);
1025 	} else {
1026 		pr_info("MAC addr was not set, use random MAC\n");
1027 		eth_random_addr(lan966x->base_mac);
1028 		lan966x->base_mac[5] &= 0xf0;
1029 	}
1030 
1031 	ports = device_get_named_child_node(&pdev->dev, "ethernet-ports");
1032 	if (!ports)
1033 		return dev_err_probe(&pdev->dev, -ENODEV,
1034 				     "no ethernet-ports child found\n");
1035 
1036 	err = lan966x_create_targets(pdev, lan966x);
1037 	if (err)
1038 		return dev_err_probe(&pdev->dev, err,
1039 				     "Failed to create targets");
1040 
1041 	err = lan966x_reset_switch(lan966x);
1042 	if (err)
1043 		return dev_err_probe(&pdev->dev, err, "Reset failed");
1044 
1045 	lan966x->num_phys_ports = NUM_PHYS_PORTS;
1046 	lan966x->ports = devm_kcalloc(&pdev->dev, lan966x->num_phys_ports,
1047 				      sizeof(struct lan966x_port *),
1048 				      GFP_KERNEL);
1049 	if (!lan966x->ports)
1050 		return -ENOMEM;
1051 
1052 	/* There QS system has 32KB of memory */
1053 	lan966x->shared_queue_sz = LAN966X_BUFFER_MEMORY;
1054 
1055 	/* set irq */
1056 	lan966x->xtr_irq = platform_get_irq_byname(pdev, "xtr");
1057 	if (lan966x->xtr_irq <= 0)
1058 		return -EINVAL;
1059 
1060 	err = devm_request_threaded_irq(&pdev->dev, lan966x->xtr_irq, NULL,
1061 					lan966x_xtr_irq_handler, IRQF_ONESHOT,
1062 					"frame extraction", lan966x);
1063 	if (err) {
1064 		pr_err("Unable to use xtr irq");
1065 		return -ENODEV;
1066 	}
1067 
1068 	lan966x->ana_irq = platform_get_irq_byname(pdev, "ana");
1069 	if (lan966x->ana_irq > 0) {
1070 		err = devm_request_threaded_irq(&pdev->dev, lan966x->ana_irq, NULL,
1071 						lan966x_ana_irq_handler, IRQF_ONESHOT,
1072 						"ana irq", lan966x);
1073 		if (err)
1074 			return dev_err_probe(&pdev->dev, err, "Unable to use ana irq");
1075 	}
1076 
1077 	lan966x->ptp_irq = platform_get_irq_byname(pdev, "ptp");
1078 	if (lan966x->ptp_irq > 0) {
1079 		err = devm_request_threaded_irq(&pdev->dev, lan966x->ptp_irq, NULL,
1080 						lan966x_ptp_irq_handler, IRQF_ONESHOT,
1081 						"ptp irq", lan966x);
1082 		if (err)
1083 			return dev_err_probe(&pdev->dev, err, "Unable to use ptp irq");
1084 
1085 		lan966x->ptp = 1;
1086 	}
1087 
1088 	lan966x->fdma_irq = platform_get_irq_byname(pdev, "fdma");
1089 	if (lan966x->fdma_irq > 0) {
1090 		err = devm_request_irq(&pdev->dev, lan966x->fdma_irq,
1091 				       lan966x_fdma_irq_handler, 0,
1092 				       "fdma irq", lan966x);
1093 		if (err)
1094 			return dev_err_probe(&pdev->dev, err, "Unable to use fdma irq");
1095 
1096 		lan966x->fdma = true;
1097 	}
1098 
1099 	if (lan966x->ptp) {
1100 		lan966x->ptp_ext_irq = platform_get_irq_byname(pdev, "ptp-ext");
1101 		if (lan966x->ptp_ext_irq > 0) {
1102 			err = devm_request_threaded_irq(&pdev->dev,
1103 							lan966x->ptp_ext_irq, NULL,
1104 							lan966x_ptp_ext_irq_handler,
1105 							IRQF_ONESHOT,
1106 							"ptp-ext irq", lan966x);
1107 			if (err)
1108 				return dev_err_probe(&pdev->dev, err,
1109 						     "Unable to use ptp-ext irq");
1110 		}
1111 	}
1112 
1113 	/* init switch */
1114 	lan966x_init(lan966x);
1115 	lan966x_stats_init(lan966x);
1116 
1117 	/* go over the child nodes */
1118 	fwnode_for_each_available_child_node(ports, portnp) {
1119 		phy_interface_t phy_mode;
1120 		struct phy *serdes;
1121 		u32 p;
1122 
1123 		if (fwnode_property_read_u32(portnp, "reg", &p))
1124 			continue;
1125 
1126 		phy_mode = fwnode_get_phy_mode(portnp);
1127 		err = lan966x_probe_port(lan966x, p, phy_mode, portnp);
1128 		if (err)
1129 			goto cleanup_ports;
1130 
1131 		/* Read needed configuration */
1132 		lan966x->ports[p]->config.portmode = phy_mode;
1133 		lan966x->ports[p]->fwnode = fwnode_handle_get(portnp);
1134 
1135 		serdes = devm_of_phy_get(lan966x->dev, to_of_node(portnp), NULL);
1136 		if (PTR_ERR(serdes) == -ENODEV)
1137 			serdes = NULL;
1138 		if (IS_ERR(serdes)) {
1139 			err = PTR_ERR(serdes);
1140 			goto cleanup_ports;
1141 		}
1142 		lan966x->ports[p]->serdes = serdes;
1143 
1144 		lan966x_port_init(lan966x->ports[p]);
1145 		err = lan966x_xdp_port_init(lan966x->ports[p]);
1146 		if (err)
1147 			goto cleanup_ports;
1148 	}
1149 
1150 	lan966x_mdb_init(lan966x);
1151 	err = lan966x_fdb_init(lan966x);
1152 	if (err)
1153 		goto cleanup_ports;
1154 
1155 	err = lan966x_ptp_init(lan966x);
1156 	if (err)
1157 		goto cleanup_fdb;
1158 
1159 	err = lan966x_fdma_init(lan966x);
1160 	if (err)
1161 		goto cleanup_ptp;
1162 
1163 	err = lan966x_vcap_init(lan966x);
1164 	if (err)
1165 		goto cleanup_fdma;
1166 
1167 	return 0;
1168 
1169 cleanup_fdma:
1170 	lan966x_fdma_deinit(lan966x);
1171 
1172 cleanup_ptp:
1173 	lan966x_ptp_deinit(lan966x);
1174 
1175 cleanup_fdb:
1176 	lan966x_fdb_deinit(lan966x);
1177 
1178 cleanup_ports:
1179 	fwnode_handle_put(portnp);
1180 
1181 	lan966x_cleanup_ports(lan966x);
1182 
1183 	cancel_delayed_work_sync(&lan966x->stats_work);
1184 	destroy_workqueue(lan966x->stats_queue);
1185 	mutex_destroy(&lan966x->stats_lock);
1186 
1187 	return err;
1188 }
1189 
1190 static int lan966x_remove(struct platform_device *pdev)
1191 {
1192 	struct lan966x *lan966x = platform_get_drvdata(pdev);
1193 
1194 	lan966x_taprio_deinit(lan966x);
1195 	lan966x_vcap_deinit(lan966x);
1196 	lan966x_fdma_deinit(lan966x);
1197 	lan966x_cleanup_ports(lan966x);
1198 
1199 	cancel_delayed_work_sync(&lan966x->stats_work);
1200 	destroy_workqueue(lan966x->stats_queue);
1201 	mutex_destroy(&lan966x->stats_lock);
1202 
1203 	lan966x_mac_purge_entries(lan966x);
1204 	lan966x_mdb_deinit(lan966x);
1205 	lan966x_fdb_deinit(lan966x);
1206 	lan966x_ptp_deinit(lan966x);
1207 
1208 	return 0;
1209 }
1210 
1211 static struct platform_driver lan966x_driver = {
1212 	.probe = lan966x_probe,
1213 	.remove = lan966x_remove,
1214 	.driver = {
1215 		.name = "lan966x-switch",
1216 		.of_match_table = lan966x_match,
1217 	},
1218 };
1219 
1220 static int __init lan966x_switch_driver_init(void)
1221 {
1222 	int ret;
1223 
1224 	lan966x_register_notifier_blocks();
1225 
1226 	ret = platform_driver_register(&lan966x_driver);
1227 	if (ret)
1228 		goto err;
1229 
1230 	return 0;
1231 
1232 err:
1233 	lan966x_unregister_notifier_blocks();
1234 	return ret;
1235 }
1236 
1237 static void __exit lan966x_switch_driver_exit(void)
1238 {
1239 	platform_driver_unregister(&lan966x_driver);
1240 	lan966x_unregister_notifier_blocks();
1241 }
1242 
1243 module_init(lan966x_switch_driver_init);
1244 module_exit(lan966x_switch_driver_exit);
1245 
1246 MODULE_DESCRIPTION("Microchip LAN966X switch driver");
1247 MODULE_AUTHOR("Horatiu Vultur <horatiu.vultur@microchip.com>");
1248 MODULE_LICENSE("Dual MIT/GPL");
1249