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1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright 2019 NXP Semiconductors
3  *
4  * This is an umbrella module for all network switches that are
5  * register-compatible with Ocelot and that perform I/O to their host CPU
6  * through an NPI (Node Processor Interface) Ethernet port.
7  */
8 #include <uapi/linux/if_bridge.h>
9 #include <soc/mscc/ocelot_vcap.h>
10 #include <soc/mscc/ocelot_qsys.h>
11 #include <soc/mscc/ocelot_sys.h>
12 #include <soc/mscc/ocelot_dev.h>
13 #include <soc/mscc/ocelot_ana.h>
14 #include <soc/mscc/ocelot_ptp.h>
15 #include <soc/mscc/ocelot.h>
16 #include <linux/platform_device.h>
17 #include <linux/packing.h>
18 #include <linux/module.h>
19 #include <linux/of_net.h>
20 #include <linux/pci.h>
21 #include <linux/of.h>
22 #include <linux/pcs-lynx.h>
23 #include <net/pkt_sched.h>
24 #include <net/dsa.h>
25 #include "felix.h"
26 
felix_get_tag_protocol(struct dsa_switch * ds,int port,enum dsa_tag_protocol mp)27 static enum dsa_tag_protocol felix_get_tag_protocol(struct dsa_switch *ds,
28 						    int port,
29 						    enum dsa_tag_protocol mp)
30 {
31 	return DSA_TAG_PROTO_OCELOT;
32 }
33 
felix_set_ageing_time(struct dsa_switch * ds,unsigned int ageing_time)34 static int felix_set_ageing_time(struct dsa_switch *ds,
35 				 unsigned int ageing_time)
36 {
37 	struct ocelot *ocelot = ds->priv;
38 
39 	ocelot_set_ageing_time(ocelot, ageing_time);
40 
41 	return 0;
42 }
43 
felix_fdb_dump(struct dsa_switch * ds,int port,dsa_fdb_dump_cb_t * cb,void * data)44 static int felix_fdb_dump(struct dsa_switch *ds, int port,
45 			  dsa_fdb_dump_cb_t *cb, void *data)
46 {
47 	struct ocelot *ocelot = ds->priv;
48 
49 	return ocelot_fdb_dump(ocelot, port, cb, data);
50 }
51 
felix_fdb_add(struct dsa_switch * ds,int port,const unsigned char * addr,u16 vid)52 static int felix_fdb_add(struct dsa_switch *ds, int port,
53 			 const unsigned char *addr, u16 vid)
54 {
55 	struct ocelot *ocelot = ds->priv;
56 
57 	return ocelot_fdb_add(ocelot, port, addr, vid);
58 }
59 
felix_fdb_del(struct dsa_switch * ds,int port,const unsigned char * addr,u16 vid)60 static int felix_fdb_del(struct dsa_switch *ds, int port,
61 			 const unsigned char *addr, u16 vid)
62 {
63 	struct ocelot *ocelot = ds->priv;
64 
65 	return ocelot_fdb_del(ocelot, port, addr, vid);
66 }
67 
68 /* This callback needs to be present */
felix_mdb_prepare(struct dsa_switch * ds,int port,const struct switchdev_obj_port_mdb * mdb)69 static int felix_mdb_prepare(struct dsa_switch *ds, int port,
70 			     const struct switchdev_obj_port_mdb *mdb)
71 {
72 	return 0;
73 }
74 
felix_mdb_add(struct dsa_switch * ds,int port,const struct switchdev_obj_port_mdb * mdb)75 static void felix_mdb_add(struct dsa_switch *ds, int port,
76 			  const struct switchdev_obj_port_mdb *mdb)
77 {
78 	struct ocelot *ocelot = ds->priv;
79 
80 	ocelot_port_mdb_add(ocelot, port, mdb);
81 }
82 
felix_mdb_del(struct dsa_switch * ds,int port,const struct switchdev_obj_port_mdb * mdb)83 static int felix_mdb_del(struct dsa_switch *ds, int port,
84 			 const struct switchdev_obj_port_mdb *mdb)
85 {
86 	struct ocelot *ocelot = ds->priv;
87 
88 	return ocelot_port_mdb_del(ocelot, port, mdb);
89 }
90 
felix_bridge_stp_state_set(struct dsa_switch * ds,int port,u8 state)91 static void felix_bridge_stp_state_set(struct dsa_switch *ds, int port,
92 				       u8 state)
93 {
94 	struct ocelot *ocelot = ds->priv;
95 
96 	return ocelot_bridge_stp_state_set(ocelot, port, state);
97 }
98 
felix_bridge_join(struct dsa_switch * ds,int port,struct net_device * br)99 static int felix_bridge_join(struct dsa_switch *ds, int port,
100 			     struct net_device *br)
101 {
102 	struct ocelot *ocelot = ds->priv;
103 
104 	return ocelot_port_bridge_join(ocelot, port, br);
105 }
106 
felix_bridge_leave(struct dsa_switch * ds,int port,struct net_device * br)107 static void felix_bridge_leave(struct dsa_switch *ds, int port,
108 			       struct net_device *br)
109 {
110 	struct ocelot *ocelot = ds->priv;
111 
112 	ocelot_port_bridge_leave(ocelot, port, br);
113 }
114 
115 /* This callback needs to be present */
felix_vlan_prepare(struct dsa_switch * ds,int port,const struct switchdev_obj_port_vlan * vlan)116 static int felix_vlan_prepare(struct dsa_switch *ds, int port,
117 			      const struct switchdev_obj_port_vlan *vlan)
118 {
119 	return 0;
120 }
121 
felix_vlan_filtering(struct dsa_switch * ds,int port,bool enabled,struct switchdev_trans * trans)122 static int felix_vlan_filtering(struct dsa_switch *ds, int port, bool enabled,
123 				struct switchdev_trans *trans)
124 {
125 	struct ocelot *ocelot = ds->priv;
126 
127 	return ocelot_port_vlan_filtering(ocelot, port, enabled, trans);
128 }
129 
felix_vlan_add(struct dsa_switch * ds,int port,const struct switchdev_obj_port_vlan * vlan)130 static void felix_vlan_add(struct dsa_switch *ds, int port,
131 			   const struct switchdev_obj_port_vlan *vlan)
132 {
133 	struct ocelot *ocelot = ds->priv;
134 	u16 flags = vlan->flags;
135 	u16 vid;
136 	int err;
137 
138 	if (dsa_is_cpu_port(ds, port))
139 		flags &= ~BRIDGE_VLAN_INFO_UNTAGGED;
140 
141 	for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {
142 		err = ocelot_vlan_add(ocelot, port, vid,
143 				      flags & BRIDGE_VLAN_INFO_PVID,
144 				      flags & BRIDGE_VLAN_INFO_UNTAGGED);
145 		if (err) {
146 			dev_err(ds->dev, "Failed to add VLAN %d to port %d: %d\n",
147 				vid, port, err);
148 			return;
149 		}
150 	}
151 }
152 
felix_vlan_del(struct dsa_switch * ds,int port,const struct switchdev_obj_port_vlan * vlan)153 static int felix_vlan_del(struct dsa_switch *ds, int port,
154 			  const struct switchdev_obj_port_vlan *vlan)
155 {
156 	struct ocelot *ocelot = ds->priv;
157 	u16 vid;
158 	int err;
159 
160 	for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) {
161 		err = ocelot_vlan_del(ocelot, port, vid);
162 		if (err) {
163 			dev_err(ds->dev, "Failed to remove VLAN %d from port %d: %d\n",
164 				vid, port, err);
165 			return err;
166 		}
167 	}
168 	return 0;
169 }
170 
felix_port_enable(struct dsa_switch * ds,int port,struct phy_device * phy)171 static int felix_port_enable(struct dsa_switch *ds, int port,
172 			     struct phy_device *phy)
173 {
174 	struct ocelot *ocelot = ds->priv;
175 
176 	ocelot_port_enable(ocelot, port, phy);
177 
178 	return 0;
179 }
180 
felix_port_disable(struct dsa_switch * ds,int port)181 static void felix_port_disable(struct dsa_switch *ds, int port)
182 {
183 	struct ocelot *ocelot = ds->priv;
184 
185 	return ocelot_port_disable(ocelot, port);
186 }
187 
felix_phylink_validate(struct dsa_switch * ds,int port,unsigned long * supported,struct phylink_link_state * state)188 static void felix_phylink_validate(struct dsa_switch *ds, int port,
189 				   unsigned long *supported,
190 				   struct phylink_link_state *state)
191 {
192 	struct ocelot *ocelot = ds->priv;
193 	struct felix *felix = ocelot_to_felix(ocelot);
194 
195 	if (felix->info->phylink_validate)
196 		felix->info->phylink_validate(ocelot, port, supported, state);
197 }
198 
felix_phylink_mac_config(struct dsa_switch * ds,int port,unsigned int link_an_mode,const struct phylink_link_state * state)199 static void felix_phylink_mac_config(struct dsa_switch *ds, int port,
200 				     unsigned int link_an_mode,
201 				     const struct phylink_link_state *state)
202 {
203 	struct ocelot *ocelot = ds->priv;
204 	struct felix *felix = ocelot_to_felix(ocelot);
205 	struct dsa_port *dp = dsa_to_port(ds, port);
206 
207 	if (felix->pcs[port])
208 		phylink_set_pcs(dp->pl, &felix->pcs[port]->pcs);
209 }
210 
felix_phylink_mac_link_down(struct dsa_switch * ds,int port,unsigned int link_an_mode,phy_interface_t interface)211 static void felix_phylink_mac_link_down(struct dsa_switch *ds, int port,
212 					unsigned int link_an_mode,
213 					phy_interface_t interface)
214 {
215 	struct ocelot *ocelot = ds->priv;
216 	struct ocelot_port *ocelot_port = ocelot->ports[port];
217 	int err;
218 
219 	ocelot_port_rmwl(ocelot_port, 0, DEV_MAC_ENA_CFG_RX_ENA,
220 			 DEV_MAC_ENA_CFG);
221 
222 	ocelot_fields_write(ocelot, port, QSYS_SWITCH_PORT_MODE_PORT_ENA, 0);
223 
224 	err = ocelot_port_flush(ocelot, port);
225 	if (err)
226 		dev_err(ocelot->dev, "failed to flush port %d: %d\n",
227 			port, err);
228 
229 	/* Put the port in reset. */
230 	ocelot_port_writel(ocelot_port,
231 			   DEV_CLOCK_CFG_MAC_TX_RST |
232 			   DEV_CLOCK_CFG_MAC_RX_RST |
233 			   DEV_CLOCK_CFG_LINK_SPEED(OCELOT_SPEED_1000),
234 			   DEV_CLOCK_CFG);
235 }
236 
felix_phylink_mac_link_up(struct dsa_switch * ds,int port,unsigned int link_an_mode,phy_interface_t interface,struct phy_device * phydev,int speed,int duplex,bool tx_pause,bool rx_pause)237 static void felix_phylink_mac_link_up(struct dsa_switch *ds, int port,
238 				      unsigned int link_an_mode,
239 				      phy_interface_t interface,
240 				      struct phy_device *phydev,
241 				      int speed, int duplex,
242 				      bool tx_pause, bool rx_pause)
243 {
244 	struct ocelot *ocelot = ds->priv;
245 	struct ocelot_port *ocelot_port = ocelot->ports[port];
246 	struct felix *felix = ocelot_to_felix(ocelot);
247 	u32 mac_fc_cfg;
248 
249 	/* Take port out of reset by clearing the MAC_TX_RST, MAC_RX_RST and
250 	 * PORT_RST bits in DEV_CLOCK_CFG. Note that the way this system is
251 	 * integrated is that the MAC speed is fixed and it's the PCS who is
252 	 * performing the rate adaptation, so we have to write "1000Mbps" into
253 	 * the LINK_SPEED field of DEV_CLOCK_CFG (which is also its default
254 	 * value).
255 	 */
256 	ocelot_port_writel(ocelot_port,
257 			   DEV_CLOCK_CFG_LINK_SPEED(OCELOT_SPEED_1000),
258 			   DEV_CLOCK_CFG);
259 
260 	switch (speed) {
261 	case SPEED_10:
262 		mac_fc_cfg = SYS_MAC_FC_CFG_FC_LINK_SPEED(3);
263 		break;
264 	case SPEED_100:
265 		mac_fc_cfg = SYS_MAC_FC_CFG_FC_LINK_SPEED(2);
266 		break;
267 	case SPEED_1000:
268 	case SPEED_2500:
269 		mac_fc_cfg = SYS_MAC_FC_CFG_FC_LINK_SPEED(1);
270 		break;
271 	default:
272 		dev_err(ocelot->dev, "Unsupported speed on port %d: %d\n",
273 			port, speed);
274 		return;
275 	}
276 
277 	/* handle Rx pause in all cases, with 2500base-X this is used for rate
278 	 * adaptation.
279 	 */
280 	mac_fc_cfg |= SYS_MAC_FC_CFG_RX_FC_ENA;
281 
282 	if (tx_pause)
283 		mac_fc_cfg |= SYS_MAC_FC_CFG_TX_FC_ENA |
284 			      SYS_MAC_FC_CFG_PAUSE_VAL_CFG(0xffff) |
285 			      SYS_MAC_FC_CFG_FC_LATENCY_CFG(0x7) |
286 			      SYS_MAC_FC_CFG_ZERO_PAUSE_ENA;
287 
288 	/* Flow control. Link speed is only used here to evaluate the time
289 	 * specification in incoming pause frames.
290 	 */
291 	ocelot_write_rix(ocelot, mac_fc_cfg, SYS_MAC_FC_CFG, port);
292 
293 	ocelot_write_rix(ocelot, 0, ANA_POL_FLOWC, port);
294 
295 	/* Undo the effects of felix_phylink_mac_link_down:
296 	 * enable MAC module
297 	 */
298 	ocelot_port_writel(ocelot_port, DEV_MAC_ENA_CFG_RX_ENA |
299 			   DEV_MAC_ENA_CFG_TX_ENA, DEV_MAC_ENA_CFG);
300 
301 	/* Enable receiving frames on the port, and activate auto-learning of
302 	 * MAC addresses.
303 	 */
304 	ocelot_write_gix(ocelot, ANA_PORT_PORT_CFG_LEARNAUTO |
305 			 ANA_PORT_PORT_CFG_RECV_ENA |
306 			 ANA_PORT_PORT_CFG_PORTID_VAL(port),
307 			 ANA_PORT_PORT_CFG, port);
308 
309 	/* Core: Enable port for frame transfer */
310 	ocelot_fields_write(ocelot, port,
311 			    QSYS_SWITCH_PORT_MODE_PORT_ENA, 1);
312 
313 	if (felix->info->port_sched_speed_set)
314 		felix->info->port_sched_speed_set(ocelot, port, speed);
315 }
316 
felix_port_qos_map_init(struct ocelot * ocelot,int port)317 static void felix_port_qos_map_init(struct ocelot *ocelot, int port)
318 {
319 	int i;
320 
321 	ocelot_rmw_gix(ocelot,
322 		       ANA_PORT_QOS_CFG_QOS_PCP_ENA,
323 		       ANA_PORT_QOS_CFG_QOS_PCP_ENA,
324 		       ANA_PORT_QOS_CFG,
325 		       port);
326 
327 	for (i = 0; i < FELIX_NUM_TC * 2; i++) {
328 		ocelot_rmw_ix(ocelot,
329 			      (ANA_PORT_PCP_DEI_MAP_DP_PCP_DEI_VAL & i) |
330 			      ANA_PORT_PCP_DEI_MAP_QOS_PCP_DEI_VAL(i),
331 			      ANA_PORT_PCP_DEI_MAP_DP_PCP_DEI_VAL |
332 			      ANA_PORT_PCP_DEI_MAP_QOS_PCP_DEI_VAL_M,
333 			      ANA_PORT_PCP_DEI_MAP,
334 			      port, i);
335 	}
336 }
337 
felix_get_strings(struct dsa_switch * ds,int port,u32 stringset,u8 * data)338 static void felix_get_strings(struct dsa_switch *ds, int port,
339 			      u32 stringset, u8 *data)
340 {
341 	struct ocelot *ocelot = ds->priv;
342 
343 	return ocelot_get_strings(ocelot, port, stringset, data);
344 }
345 
felix_get_ethtool_stats(struct dsa_switch * ds,int port,u64 * data)346 static void felix_get_ethtool_stats(struct dsa_switch *ds, int port, u64 *data)
347 {
348 	struct ocelot *ocelot = ds->priv;
349 
350 	ocelot_get_ethtool_stats(ocelot, port, data);
351 }
352 
felix_get_sset_count(struct dsa_switch * ds,int port,int sset)353 static int felix_get_sset_count(struct dsa_switch *ds, int port, int sset)
354 {
355 	struct ocelot *ocelot = ds->priv;
356 
357 	return ocelot_get_sset_count(ocelot, port, sset);
358 }
359 
felix_get_ts_info(struct dsa_switch * ds,int port,struct ethtool_ts_info * info)360 static int felix_get_ts_info(struct dsa_switch *ds, int port,
361 			     struct ethtool_ts_info *info)
362 {
363 	struct ocelot *ocelot = ds->priv;
364 
365 	return ocelot_get_ts_info(ocelot, port, info);
366 }
367 
felix_parse_ports_node(struct felix * felix,struct device_node * ports_node,phy_interface_t * port_phy_modes)368 static int felix_parse_ports_node(struct felix *felix,
369 				  struct device_node *ports_node,
370 				  phy_interface_t *port_phy_modes)
371 {
372 	struct ocelot *ocelot = &felix->ocelot;
373 	struct device *dev = felix->ocelot.dev;
374 	struct device_node *child;
375 
376 	for_each_available_child_of_node(ports_node, child) {
377 		phy_interface_t phy_mode;
378 		u32 port;
379 		int err;
380 
381 		/* Get switch port number from DT */
382 		if (of_property_read_u32(child, "reg", &port) < 0) {
383 			dev_err(dev, "Port number not defined in device tree "
384 				"(property \"reg\")\n");
385 			of_node_put(child);
386 			return -ENODEV;
387 		}
388 
389 		/* Get PHY mode from DT */
390 		err = of_get_phy_mode(child, &phy_mode);
391 		if (err) {
392 			dev_err(dev, "Failed to read phy-mode or "
393 				"phy-interface-type property for port %d\n",
394 				port);
395 			of_node_put(child);
396 			return -ENODEV;
397 		}
398 
399 		err = felix->info->prevalidate_phy_mode(ocelot, port, phy_mode);
400 		if (err < 0) {
401 			dev_err(dev, "Unsupported PHY mode %s on port %d\n",
402 				phy_modes(phy_mode), port);
403 			of_node_put(child);
404 			return err;
405 		}
406 
407 		port_phy_modes[port] = phy_mode;
408 	}
409 
410 	return 0;
411 }
412 
felix_parse_dt(struct felix * felix,phy_interface_t * port_phy_modes)413 static int felix_parse_dt(struct felix *felix, phy_interface_t *port_phy_modes)
414 {
415 	struct device *dev = felix->ocelot.dev;
416 	struct device_node *switch_node;
417 	struct device_node *ports_node;
418 	int err;
419 
420 	switch_node = dev->of_node;
421 
422 	ports_node = of_get_child_by_name(switch_node, "ports");
423 	if (!ports_node) {
424 		dev_err(dev, "Incorrect bindings: absent \"ports\" node\n");
425 		return -ENODEV;
426 	}
427 
428 	err = felix_parse_ports_node(felix, ports_node, port_phy_modes);
429 	of_node_put(ports_node);
430 
431 	return err;
432 }
433 
felix_init_structs(struct felix * felix,int num_phys_ports)434 static int felix_init_structs(struct felix *felix, int num_phys_ports)
435 {
436 	struct ocelot *ocelot = &felix->ocelot;
437 	phy_interface_t *port_phy_modes;
438 	struct resource res;
439 	int port, i, err;
440 
441 	ocelot->num_phys_ports = num_phys_ports;
442 	ocelot->ports = devm_kcalloc(ocelot->dev, num_phys_ports,
443 				     sizeof(struct ocelot_port *), GFP_KERNEL);
444 	if (!ocelot->ports)
445 		return -ENOMEM;
446 
447 	ocelot->map		= felix->info->map;
448 	ocelot->stats_layout	= felix->info->stats_layout;
449 	ocelot->num_stats	= felix->info->num_stats;
450 	ocelot->shared_queue_sz	= felix->info->shared_queue_sz;
451 	ocelot->num_mact_rows	= felix->info->num_mact_rows;
452 	ocelot->vcap		= felix->info->vcap;
453 	ocelot->ops		= felix->info->ops;
454 	ocelot->inj_prefix	= OCELOT_TAG_PREFIX_SHORT;
455 	ocelot->xtr_prefix	= OCELOT_TAG_PREFIX_SHORT;
456 
457 	port_phy_modes = kcalloc(num_phys_ports, sizeof(phy_interface_t),
458 				 GFP_KERNEL);
459 	if (!port_phy_modes)
460 		return -ENOMEM;
461 
462 	err = felix_parse_dt(felix, port_phy_modes);
463 	if (err) {
464 		kfree(port_phy_modes);
465 		return err;
466 	}
467 
468 	for (i = 0; i < TARGET_MAX; i++) {
469 		struct regmap *target;
470 
471 		if (!felix->info->target_io_res[i].name)
472 			continue;
473 
474 		memcpy(&res, &felix->info->target_io_res[i], sizeof(res));
475 		res.flags = IORESOURCE_MEM;
476 		res.start += felix->switch_base;
477 		res.end += felix->switch_base;
478 
479 		target = ocelot_regmap_init(ocelot, &res);
480 		if (IS_ERR(target)) {
481 			dev_err(ocelot->dev,
482 				"Failed to map device memory space\n");
483 			kfree(port_phy_modes);
484 			return PTR_ERR(target);
485 		}
486 
487 		ocelot->targets[i] = target;
488 	}
489 
490 	err = ocelot_regfields_init(ocelot, felix->info->regfields);
491 	if (err) {
492 		dev_err(ocelot->dev, "failed to init reg fields map\n");
493 		kfree(port_phy_modes);
494 		return err;
495 	}
496 
497 	for (port = 0; port < num_phys_ports; port++) {
498 		struct ocelot_port *ocelot_port;
499 		struct regmap *target;
500 		u8 *template;
501 
502 		ocelot_port = devm_kzalloc(ocelot->dev,
503 					   sizeof(struct ocelot_port),
504 					   GFP_KERNEL);
505 		if (!ocelot_port) {
506 			dev_err(ocelot->dev,
507 				"failed to allocate port memory\n");
508 			kfree(port_phy_modes);
509 			return -ENOMEM;
510 		}
511 
512 		memcpy(&res, &felix->info->port_io_res[port], sizeof(res));
513 		res.flags = IORESOURCE_MEM;
514 		res.start += felix->switch_base;
515 		res.end += felix->switch_base;
516 
517 		target = ocelot_regmap_init(ocelot, &res);
518 		if (IS_ERR(target)) {
519 			dev_err(ocelot->dev,
520 				"Failed to map memory space for port %d\n",
521 				port);
522 			kfree(port_phy_modes);
523 			return PTR_ERR(target);
524 		}
525 
526 		template = devm_kzalloc(ocelot->dev, OCELOT_TOTAL_TAG_LEN,
527 					GFP_KERNEL);
528 		if (!template) {
529 			dev_err(ocelot->dev,
530 				"Failed to allocate memory for DSA tag\n");
531 			kfree(port_phy_modes);
532 			return -ENOMEM;
533 		}
534 
535 		ocelot_port->phy_mode = port_phy_modes[port];
536 		ocelot_port->ocelot = ocelot;
537 		ocelot_port->target = target;
538 		ocelot_port->xmit_template = template;
539 		ocelot->ports[port] = ocelot_port;
540 
541 		felix->info->xmit_template_populate(ocelot, port);
542 	}
543 
544 	kfree(port_phy_modes);
545 
546 	if (felix->info->mdio_bus_alloc) {
547 		err = felix->info->mdio_bus_alloc(ocelot);
548 		if (err < 0)
549 			return err;
550 	}
551 
552 	return 0;
553 }
554 
555 /* The CPU port module is connected to the Node Processor Interface (NPI). This
556  * is the mode through which frames can be injected from and extracted to an
557  * external CPU, over Ethernet.
558  */
felix_npi_port_init(struct ocelot * ocelot,int port)559 static void felix_npi_port_init(struct ocelot *ocelot, int port)
560 {
561 	ocelot->npi = port;
562 
563 	ocelot_write(ocelot, QSYS_EXT_CPU_CFG_EXT_CPUQ_MSK_M |
564 		     QSYS_EXT_CPU_CFG_EXT_CPU_PORT(port),
565 		     QSYS_EXT_CPU_CFG);
566 
567 	/* NPI port Injection/Extraction configuration */
568 	ocelot_fields_write(ocelot, port, SYS_PORT_MODE_INCL_XTR_HDR,
569 			    ocelot->xtr_prefix);
570 	ocelot_fields_write(ocelot, port, SYS_PORT_MODE_INCL_INJ_HDR,
571 			    ocelot->inj_prefix);
572 
573 	/* Disable transmission of pause frames */
574 	ocelot_fields_write(ocelot, port, SYS_PAUSE_CFG_PAUSE_ENA, 0);
575 }
576 
577 /* Hardware initialization done here so that we can allocate structures with
578  * devm without fear of dsa_register_switch returning -EPROBE_DEFER and causing
579  * us to allocate structures twice (leak memory) and map PCI memory twice
580  * (which will not work).
581  */
felix_setup(struct dsa_switch * ds)582 static int felix_setup(struct dsa_switch *ds)
583 {
584 	struct ocelot *ocelot = ds->priv;
585 	struct felix *felix = ocelot_to_felix(ocelot);
586 	int port, err;
587 
588 	err = felix_init_structs(felix, ds->num_ports);
589 	if (err)
590 		return err;
591 
592 	err = ocelot_init(ocelot);
593 	if (err)
594 		return err;
595 
596 	if (ocelot->ptp) {
597 		err = ocelot_init_timestamp(ocelot, felix->info->ptp_caps);
598 		if (err) {
599 			dev_err(ocelot->dev,
600 				"Timestamp initialization failed\n");
601 			ocelot->ptp = 0;
602 		}
603 	}
604 
605 	for (port = 0; port < ds->num_ports; port++) {
606 		ocelot_init_port(ocelot, port);
607 
608 		if (dsa_is_cpu_port(ds, port))
609 			felix_npi_port_init(ocelot, port);
610 
611 		/* Set the default QoS Classification based on PCP and DEI
612 		 * bits of vlan tag.
613 		 */
614 		felix_port_qos_map_init(ocelot, port);
615 	}
616 
617 	/* Include the CPU port module in the forwarding mask for unknown
618 	 * unicast - the hardware default value for ANA_FLOODING_FLD_UNICAST
619 	 * excludes BIT(ocelot->num_phys_ports), and so does ocelot_init, since
620 	 * Ocelot relies on whitelisting MAC addresses towards PGID_CPU.
621 	 */
622 	ocelot_write_rix(ocelot,
623 			 ANA_PGID_PGID_PGID(GENMASK(ocelot->num_phys_ports, 0)),
624 			 ANA_PGID_PGID, PGID_UC);
625 
626 	ds->mtu_enforcement_ingress = true;
627 	ds->configure_vlan_while_not_filtering = true;
628 
629 	return 0;
630 }
631 
felix_teardown(struct dsa_switch * ds)632 static void felix_teardown(struct dsa_switch *ds)
633 {
634 	struct ocelot *ocelot = ds->priv;
635 	struct felix *felix = ocelot_to_felix(ocelot);
636 	int port;
637 
638 	ocelot_deinit_timestamp(ocelot);
639 	ocelot_deinit(ocelot);
640 
641 	for (port = 0; port < ocelot->num_phys_ports; port++) {
642 		if (dsa_is_unused_port(ds, port))
643 			continue;
644 
645 		ocelot_deinit_port(ocelot, port);
646 	}
647 
648 	if (felix->info->mdio_bus_free)
649 		felix->info->mdio_bus_free(ocelot);
650 }
651 
felix_hwtstamp_get(struct dsa_switch * ds,int port,struct ifreq * ifr)652 static int felix_hwtstamp_get(struct dsa_switch *ds, int port,
653 			      struct ifreq *ifr)
654 {
655 	struct ocelot *ocelot = ds->priv;
656 
657 	return ocelot_hwstamp_get(ocelot, port, ifr);
658 }
659 
felix_hwtstamp_set(struct dsa_switch * ds,int port,struct ifreq * ifr)660 static int felix_hwtstamp_set(struct dsa_switch *ds, int port,
661 			      struct ifreq *ifr)
662 {
663 	struct ocelot *ocelot = ds->priv;
664 
665 	return ocelot_hwstamp_set(ocelot, port, ifr);
666 }
667 
felix_rxtstamp(struct dsa_switch * ds,int port,struct sk_buff * skb,unsigned int type)668 static bool felix_rxtstamp(struct dsa_switch *ds, int port,
669 			   struct sk_buff *skb, unsigned int type)
670 {
671 	struct skb_shared_hwtstamps *shhwtstamps;
672 	struct ocelot *ocelot = ds->priv;
673 	u8 *extraction = skb->data - ETH_HLEN - OCELOT_TAG_LEN;
674 	u32 tstamp_lo, tstamp_hi;
675 	struct timespec64 ts;
676 	u64 tstamp, val;
677 
678 	ocelot_ptp_gettime64(&ocelot->ptp_info, &ts);
679 	tstamp = ktime_set(ts.tv_sec, ts.tv_nsec);
680 
681 	packing(extraction, &val,  116, 85, OCELOT_TAG_LEN, UNPACK, 0);
682 	tstamp_lo = (u32)val;
683 
684 	tstamp_hi = tstamp >> 32;
685 	if ((tstamp & 0xffffffff) < tstamp_lo)
686 		tstamp_hi--;
687 
688 	tstamp = ((u64)tstamp_hi << 32) | tstamp_lo;
689 
690 	shhwtstamps = skb_hwtstamps(skb);
691 	memset(shhwtstamps, 0, sizeof(struct skb_shared_hwtstamps));
692 	shhwtstamps->hwtstamp = tstamp;
693 	return false;
694 }
695 
felix_txtstamp(struct dsa_switch * ds,int port,struct sk_buff * clone,unsigned int type)696 static bool felix_txtstamp(struct dsa_switch *ds, int port,
697 			   struct sk_buff *clone, unsigned int type)
698 {
699 	struct ocelot *ocelot = ds->priv;
700 	struct ocelot_port *ocelot_port = ocelot->ports[port];
701 
702 	if (ocelot->ptp && (skb_shinfo(clone)->tx_flags & SKBTX_HW_TSTAMP) &&
703 	    ocelot_port->ptp_cmd == IFH_REW_OP_TWO_STEP_PTP) {
704 		ocelot_port_add_txtstamp_skb(ocelot, port, clone);
705 		return true;
706 	}
707 
708 	return false;
709 }
710 
felix_change_mtu(struct dsa_switch * ds,int port,int new_mtu)711 static int felix_change_mtu(struct dsa_switch *ds, int port, int new_mtu)
712 {
713 	struct ocelot *ocelot = ds->priv;
714 
715 	ocelot_port_set_maxlen(ocelot, port, new_mtu);
716 
717 	return 0;
718 }
719 
felix_get_max_mtu(struct dsa_switch * ds,int port)720 static int felix_get_max_mtu(struct dsa_switch *ds, int port)
721 {
722 	struct ocelot *ocelot = ds->priv;
723 
724 	return ocelot_get_max_mtu(ocelot, port);
725 }
726 
felix_cls_flower_add(struct dsa_switch * ds,int port,struct flow_cls_offload * cls,bool ingress)727 static int felix_cls_flower_add(struct dsa_switch *ds, int port,
728 				struct flow_cls_offload *cls, bool ingress)
729 {
730 	struct ocelot *ocelot = ds->priv;
731 
732 	return ocelot_cls_flower_replace(ocelot, port, cls, ingress);
733 }
734 
felix_cls_flower_del(struct dsa_switch * ds,int port,struct flow_cls_offload * cls,bool ingress)735 static int felix_cls_flower_del(struct dsa_switch *ds, int port,
736 				struct flow_cls_offload *cls, bool ingress)
737 {
738 	struct ocelot *ocelot = ds->priv;
739 
740 	return ocelot_cls_flower_destroy(ocelot, port, cls, ingress);
741 }
742 
felix_cls_flower_stats(struct dsa_switch * ds,int port,struct flow_cls_offload * cls,bool ingress)743 static int felix_cls_flower_stats(struct dsa_switch *ds, int port,
744 				  struct flow_cls_offload *cls, bool ingress)
745 {
746 	struct ocelot *ocelot = ds->priv;
747 
748 	return ocelot_cls_flower_stats(ocelot, port, cls, ingress);
749 }
750 
felix_port_policer_add(struct dsa_switch * ds,int port,struct dsa_mall_policer_tc_entry * policer)751 static int felix_port_policer_add(struct dsa_switch *ds, int port,
752 				  struct dsa_mall_policer_tc_entry *policer)
753 {
754 	struct ocelot *ocelot = ds->priv;
755 	struct ocelot_policer pol = {
756 		.rate = div_u64(policer->rate_bytes_per_sec, 1000) * 8,
757 		.burst = policer->burst,
758 	};
759 
760 	return ocelot_port_policer_add(ocelot, port, &pol);
761 }
762 
felix_port_policer_del(struct dsa_switch * ds,int port)763 static void felix_port_policer_del(struct dsa_switch *ds, int port)
764 {
765 	struct ocelot *ocelot = ds->priv;
766 
767 	ocelot_port_policer_del(ocelot, port);
768 }
769 
felix_port_setup_tc(struct dsa_switch * ds,int port,enum tc_setup_type type,void * type_data)770 static int felix_port_setup_tc(struct dsa_switch *ds, int port,
771 			       enum tc_setup_type type,
772 			       void *type_data)
773 {
774 	struct ocelot *ocelot = ds->priv;
775 	struct felix *felix = ocelot_to_felix(ocelot);
776 
777 	if (felix->info->port_setup_tc)
778 		return felix->info->port_setup_tc(ds, port, type, type_data);
779 	else
780 		return -EOPNOTSUPP;
781 }
782 
783 const struct dsa_switch_ops felix_switch_ops = {
784 	.get_tag_protocol	= felix_get_tag_protocol,
785 	.setup			= felix_setup,
786 	.teardown		= felix_teardown,
787 	.set_ageing_time	= felix_set_ageing_time,
788 	.get_strings		= felix_get_strings,
789 	.get_ethtool_stats	= felix_get_ethtool_stats,
790 	.get_sset_count		= felix_get_sset_count,
791 	.get_ts_info		= felix_get_ts_info,
792 	.phylink_validate	= felix_phylink_validate,
793 	.phylink_mac_config	= felix_phylink_mac_config,
794 	.phylink_mac_link_down	= felix_phylink_mac_link_down,
795 	.phylink_mac_link_up	= felix_phylink_mac_link_up,
796 	.port_enable		= felix_port_enable,
797 	.port_disable		= felix_port_disable,
798 	.port_fdb_dump		= felix_fdb_dump,
799 	.port_fdb_add		= felix_fdb_add,
800 	.port_fdb_del		= felix_fdb_del,
801 	.port_mdb_prepare	= felix_mdb_prepare,
802 	.port_mdb_add		= felix_mdb_add,
803 	.port_mdb_del		= felix_mdb_del,
804 	.port_bridge_join	= felix_bridge_join,
805 	.port_bridge_leave	= felix_bridge_leave,
806 	.port_stp_state_set	= felix_bridge_stp_state_set,
807 	.port_vlan_prepare	= felix_vlan_prepare,
808 	.port_vlan_filtering	= felix_vlan_filtering,
809 	.port_vlan_add		= felix_vlan_add,
810 	.port_vlan_del		= felix_vlan_del,
811 	.port_hwtstamp_get	= felix_hwtstamp_get,
812 	.port_hwtstamp_set	= felix_hwtstamp_set,
813 	.port_rxtstamp		= felix_rxtstamp,
814 	.port_txtstamp		= felix_txtstamp,
815 	.port_change_mtu	= felix_change_mtu,
816 	.port_max_mtu		= felix_get_max_mtu,
817 	.port_policer_add	= felix_port_policer_add,
818 	.port_policer_del	= felix_port_policer_del,
819 	.cls_flower_add		= felix_cls_flower_add,
820 	.cls_flower_del		= felix_cls_flower_del,
821 	.cls_flower_stats	= felix_cls_flower_stats,
822 	.port_setup_tc		= felix_port_setup_tc,
823 };
824 
felix_port_to_netdev(struct ocelot * ocelot,int port)825 struct net_device *felix_port_to_netdev(struct ocelot *ocelot, int port)
826 {
827 	struct felix *felix = ocelot_to_felix(ocelot);
828 	struct dsa_switch *ds = felix->ds;
829 
830 	if (!dsa_is_user_port(ds, port))
831 		return NULL;
832 
833 	return dsa_to_port(ds, port)->slave;
834 }
835 
felix_netdev_to_port(struct net_device * dev)836 int felix_netdev_to_port(struct net_device *dev)
837 {
838 	struct dsa_port *dp;
839 
840 	dp = dsa_port_from_netdev(dev);
841 	if (IS_ERR(dp))
842 		return -EINVAL;
843 
844 	return dp->index;
845 }
846