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