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