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1/*
2 * include/net/dsa.h - Driver for Distributed Switch Architecture switch chips
3 * Copyright (c) 2008-2009 Marvell Semiconductor
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 */
10
11#ifndef __LINUX_NET_DSA_H
12#define __LINUX_NET_DSA_H
13
14#include <linux/if.h>
15#include <linux/if_ether.h>
16#include <linux/list.h>
17#include <linux/notifier.h>
18#include <linux/timer.h>
19#include <linux/workqueue.h>
20#include <linux/of.h>
21#include <linux/ethtool.h>
22#include <linux/net_tstamp.h>
23#include <net/devlink.h>
24#include <net/switchdev.h>
25
26struct tc_action;
27struct phy_device;
28struct fixed_phy_status;
29
30enum dsa_tag_protocol {
31 DSA_TAG_PROTO_NONE = 0,
32 DSA_TAG_PROTO_BRCM,
33 DSA_TAG_PROTO_BRCM_PREPEND,
34 DSA_TAG_PROTO_DSA,
35 DSA_TAG_PROTO_EDSA,
36 DSA_TAG_PROTO_KSZ,
37 DSA_TAG_PROTO_LAN9303,
38 DSA_TAG_PROTO_MTK,
39 DSA_TAG_PROTO_QCA,
40 DSA_TAG_PROTO_TRAILER,
41 DSA_TAG_LAST, /* MUST BE LAST */
42};
43
44#define DSA_MAX_SWITCHES 4
45#define DSA_MAX_PORTS 12
46
47#define DSA_RTABLE_NONE -1
48
49struct dsa_chip_data {
50 /*
51 * How to access the switch configuration registers.
52 */
53 struct device *host_dev;
54 int sw_addr;
55
56 /*
57 * Reference to network devices
58 */
59 struct device *netdev[DSA_MAX_PORTS];
60
61 /* set to size of eeprom if supported by the switch */
62 int eeprom_len;
63
64 /* Device tree node pointer for this specific switch chip
65 * used during switch setup in case additional properties
66 * and resources needs to be used
67 */
68 struct device_node *of_node;
69
70 /*
71 * The names of the switch's ports. Use "cpu" to
72 * designate the switch port that the cpu is connected to,
73 * "dsa" to indicate that this port is a DSA link to
74 * another switch, NULL to indicate the port is unused,
75 * or any other string to indicate this is a physical port.
76 */
77 char *port_names[DSA_MAX_PORTS];
78 struct device_node *port_dn[DSA_MAX_PORTS];
79
80 /*
81 * An array of which element [a] indicates which port on this
82 * switch should be used to send packets to that are destined
83 * for switch a. Can be NULL if there is only one switch chip.
84 */
85 s8 rtable[DSA_MAX_SWITCHES];
86};
87
88struct dsa_platform_data {
89 /*
90 * Reference to a Linux network interface that connects
91 * to the root switch chip of the tree.
92 */
93 struct device *netdev;
94 struct net_device *of_netdev;
95
96 /*
97 * Info structs describing each of the switch chips
98 * connected via this network interface.
99 */
100 int nr_chips;
101 struct dsa_chip_data *chip;
102};
103
104struct packet_type;
105struct dsa_switch;
106
107struct dsa_device_ops {
108 struct sk_buff *(*xmit)(struct sk_buff *skb, struct net_device *dev);
109 struct sk_buff *(*rcv)(struct sk_buff *skb, struct net_device *dev,
110 struct packet_type *pt);
111 int (*flow_dissect)(const struct sk_buff *skb, __be16 *proto,
112 int *offset);
113};
114
115struct dsa_switch_tree {
116 struct list_head list;
117
118 /* Notifier chain for switch-wide events */
119 struct raw_notifier_head nh;
120
121 /* Tree identifier */
122 unsigned int index;
123
124 /* Number of switches attached to this tree */
125 struct kref refcount;
126
127 /* Has this tree been applied to the hardware? */
128 bool setup;
129
130 /*
131 * Configuration data for the platform device that owns
132 * this dsa switch tree instance.
133 */
134 struct dsa_platform_data *pd;
135
136 /*
137 * The switch port to which the CPU is attached.
138 */
139 struct dsa_port *cpu_dp;
140
141 /*
142 * Data for the individual switch chips.
143 */
144 struct dsa_switch *ds[DSA_MAX_SWITCHES];
145};
146
147/* TC matchall action types, only mirroring for now */
148enum dsa_port_mall_action_type {
149 DSA_PORT_MALL_MIRROR,
150};
151
152/* TC mirroring entry */
153struct dsa_mall_mirror_tc_entry {
154 u8 to_local_port;
155 bool ingress;
156};
157
158/* TC matchall entry */
159struct dsa_mall_tc_entry {
160 struct list_head list;
161 unsigned long cookie;
162 enum dsa_port_mall_action_type type;
163 union {
164 struct dsa_mall_mirror_tc_entry mirror;
165 };
166};
167
168
169struct dsa_port {
170 /* A CPU port is physically connected to a master device.
171 * A user port exposed to userspace has a slave device.
172 */
173 union {
174 struct net_device *master;
175 struct net_device *slave;
176 };
177
178 /* CPU port tagging operations used by master or slave devices */
179 const struct dsa_device_ops *tag_ops;
180
181 /* Copies for faster access in master receive hot path */
182 struct dsa_switch_tree *dst;
183 struct sk_buff *(*rcv)(struct sk_buff *skb, struct net_device *dev,
184 struct packet_type *pt);
185
186 enum {
187 DSA_PORT_TYPE_UNUSED = 0,
188 DSA_PORT_TYPE_CPU,
189 DSA_PORT_TYPE_DSA,
190 DSA_PORT_TYPE_USER,
191 } type;
192
193 struct dsa_switch *ds;
194 unsigned int index;
195 const char *name;
196 const struct dsa_port *cpu_dp;
197 struct device_node *dn;
198 unsigned int ageing_time;
199 u8 stp_state;
200 struct net_device *bridge_dev;
201 struct devlink_port devlink_port;
202 /*
203 * Original copy of the master netdev ethtool_ops
204 */
205 const struct ethtool_ops *orig_ethtool_ops;
206};
207
208struct dsa_switch {
209 struct device *dev;
210
211 /*
212 * Parent switch tree, and switch index.
213 */
214 struct dsa_switch_tree *dst;
215 unsigned int index;
216
217 /* Listener for switch fabric events */
218 struct notifier_block nb;
219
220 /*
221 * Give the switch driver somewhere to hang its private data
222 * structure.
223 */
224 void *priv;
225
226 /*
227 * Configuration data for this switch.
228 */
229 struct dsa_chip_data *cd;
230
231 /*
232 * The switch operations.
233 */
234 const struct dsa_switch_ops *ops;
235
236 /*
237 * An array of which element [a] indicates which port on this
238 * switch should be used to send packets to that are destined
239 * for switch a. Can be NULL if there is only one switch chip.
240 */
241 s8 rtable[DSA_MAX_SWITCHES];
242
243 /*
244 * Slave mii_bus and devices for the individual ports.
245 */
246 u32 phys_mii_mask;
247 struct mii_bus *slave_mii_bus;
248
249 /* Ageing Time limits in msecs */
250 unsigned int ageing_time_min;
251 unsigned int ageing_time_max;
252
253 /* devlink used to represent this switch device */
254 struct devlink *devlink;
255
256 /* Number of switch port queues */
257 unsigned int num_tx_queues;
258
259 /* Dynamically allocated ports, keep last */
260 size_t num_ports;
261 struct dsa_port ports[];
262};
263
264static inline const struct dsa_port *dsa_to_port(struct dsa_switch *ds, int p)
265{
266 return &ds->ports[p];
267}
268
269static inline bool dsa_is_unused_port(struct dsa_switch *ds, int p)
270{
271 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_UNUSED;
272}
273
274static inline bool dsa_is_cpu_port(struct dsa_switch *ds, int p)
275{
276 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_CPU;
277}
278
279static inline bool dsa_is_dsa_port(struct dsa_switch *ds, int p)
280{
281 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_DSA;
282}
283
284static inline bool dsa_is_user_port(struct dsa_switch *ds, int p)
285{
286 return dsa_to_port(ds, p)->type == DSA_PORT_TYPE_USER;
287}
288
289static inline u32 dsa_user_ports(struct dsa_switch *ds)
290{
291 u32 mask = 0;
292 int p;
293
294 for (p = 0; p < ds->num_ports; p++)
295 if (dsa_is_user_port(ds, p))
296 mask |= BIT(p);
297
298 return mask;
299}
300
301/* Return the local port used to reach an arbitrary switch port */
302static inline unsigned int dsa_towards_port(struct dsa_switch *ds, int device,
303 int port)
304{
305 if (device == ds->index)
306 return port;
307 else
308 return ds->rtable[device];
309}
310
311/* Return the local port used to reach the dedicated CPU port */
312static inline unsigned int dsa_upstream_port(struct dsa_switch *ds, int port)
313{
314 const struct dsa_port *dp = dsa_to_port(ds, port);
315 const struct dsa_port *cpu_dp = dp->cpu_dp;
316
317 if (!cpu_dp)
318 return port;
319
320 return dsa_towards_port(ds, cpu_dp->ds->index, cpu_dp->index);
321}
322
323typedef int dsa_fdb_dump_cb_t(const unsigned char *addr, u16 vid,
324 bool is_static, void *data);
325struct dsa_switch_ops {
326#if IS_ENABLED(CONFIG_NET_DSA_LEGACY)
327 /*
328 * Legacy probing.
329 */
330 const char *(*probe)(struct device *dsa_dev,
331 struct device *host_dev, int sw_addr,
332 void **priv);
333#endif
334
335 enum dsa_tag_protocol (*get_tag_protocol)(struct dsa_switch *ds,
336 int port);
337
338 int (*setup)(struct dsa_switch *ds);
339 u32 (*get_phy_flags)(struct dsa_switch *ds, int port);
340
341 /*
342 * Access to the switch's PHY registers.
343 */
344 int (*phy_read)(struct dsa_switch *ds, int port, int regnum);
345 int (*phy_write)(struct dsa_switch *ds, int port,
346 int regnum, u16 val);
347
348 /*
349 * Link state adjustment (called from libphy)
350 */
351 void (*adjust_link)(struct dsa_switch *ds, int port,
352 struct phy_device *phydev);
353 void (*fixed_link_update)(struct dsa_switch *ds, int port,
354 struct fixed_phy_status *st);
355
356 /*
357 * ethtool hardware statistics.
358 */
359 void (*get_strings)(struct dsa_switch *ds, int port, uint8_t *data);
360 void (*get_ethtool_stats)(struct dsa_switch *ds,
361 int port, uint64_t *data);
362 int (*get_sset_count)(struct dsa_switch *ds, int port);
363
364 /*
365 * ethtool Wake-on-LAN
366 */
367 void (*get_wol)(struct dsa_switch *ds, int port,
368 struct ethtool_wolinfo *w);
369 int (*set_wol)(struct dsa_switch *ds, int port,
370 struct ethtool_wolinfo *w);
371
372 /*
373 * ethtool timestamp info
374 */
375 int (*get_ts_info)(struct dsa_switch *ds, int port,
376 struct ethtool_ts_info *ts);
377
378 /*
379 * Suspend and resume
380 */
381 int (*suspend)(struct dsa_switch *ds);
382 int (*resume)(struct dsa_switch *ds);
383
384 /*
385 * Port enable/disable
386 */
387 int (*port_enable)(struct dsa_switch *ds, int port,
388 struct phy_device *phy);
389 void (*port_disable)(struct dsa_switch *ds, int port,
390 struct phy_device *phy);
391
392 /*
393 * Port's MAC EEE settings
394 */
395 int (*set_mac_eee)(struct dsa_switch *ds, int port,
396 struct ethtool_eee *e);
397 int (*get_mac_eee)(struct dsa_switch *ds, int port,
398 struct ethtool_eee *e);
399
400 /* EEPROM access */
401 int (*get_eeprom_len)(struct dsa_switch *ds);
402 int (*get_eeprom)(struct dsa_switch *ds,
403 struct ethtool_eeprom *eeprom, u8 *data);
404 int (*set_eeprom)(struct dsa_switch *ds,
405 struct ethtool_eeprom *eeprom, u8 *data);
406
407 /*
408 * Register access.
409 */
410 int (*get_regs_len)(struct dsa_switch *ds, int port);
411 void (*get_regs)(struct dsa_switch *ds, int port,
412 struct ethtool_regs *regs, void *p);
413
414 /*
415 * Bridge integration
416 */
417 int (*set_ageing_time)(struct dsa_switch *ds, unsigned int msecs);
418 int (*port_bridge_join)(struct dsa_switch *ds, int port,
419 struct net_device *bridge);
420 void (*port_bridge_leave)(struct dsa_switch *ds, int port,
421 struct net_device *bridge);
422 void (*port_stp_state_set)(struct dsa_switch *ds, int port,
423 u8 state);
424 void (*port_fast_age)(struct dsa_switch *ds, int port);
425
426 /*
427 * VLAN support
428 */
429 int (*port_vlan_filtering)(struct dsa_switch *ds, int port,
430 bool vlan_filtering);
431 int (*port_vlan_prepare)(struct dsa_switch *ds, int port,
432 const struct switchdev_obj_port_vlan *vlan);
433 void (*port_vlan_add)(struct dsa_switch *ds, int port,
434 const struct switchdev_obj_port_vlan *vlan);
435 int (*port_vlan_del)(struct dsa_switch *ds, int port,
436 const struct switchdev_obj_port_vlan *vlan);
437 /*
438 * Forwarding database
439 */
440 int (*port_fdb_add)(struct dsa_switch *ds, int port,
441 const unsigned char *addr, u16 vid);
442 int (*port_fdb_del)(struct dsa_switch *ds, int port,
443 const unsigned char *addr, u16 vid);
444 int (*port_fdb_dump)(struct dsa_switch *ds, int port,
445 dsa_fdb_dump_cb_t *cb, void *data);
446
447 /*
448 * Multicast database
449 */
450 int (*port_mdb_prepare)(struct dsa_switch *ds, int port,
451 const struct switchdev_obj_port_mdb *mdb);
452 void (*port_mdb_add)(struct dsa_switch *ds, int port,
453 const struct switchdev_obj_port_mdb *mdb);
454 int (*port_mdb_del)(struct dsa_switch *ds, int port,
455 const struct switchdev_obj_port_mdb *mdb);
456 /*
457 * RXNFC
458 */
459 int (*get_rxnfc)(struct dsa_switch *ds, int port,
460 struct ethtool_rxnfc *nfc, u32 *rule_locs);
461 int (*set_rxnfc)(struct dsa_switch *ds, int port,
462 struct ethtool_rxnfc *nfc);
463
464 /*
465 * TC integration
466 */
467 int (*port_mirror_add)(struct dsa_switch *ds, int port,
468 struct dsa_mall_mirror_tc_entry *mirror,
469 bool ingress);
470 void (*port_mirror_del)(struct dsa_switch *ds, int port,
471 struct dsa_mall_mirror_tc_entry *mirror);
472
473 /*
474 * Cross-chip operations
475 */
476 int (*crosschip_bridge_join)(struct dsa_switch *ds, int sw_index,
477 int port, struct net_device *br);
478 void (*crosschip_bridge_leave)(struct dsa_switch *ds, int sw_index,
479 int port, struct net_device *br);
480
481 /*
482 * PTP functionality
483 */
484 int (*port_hwtstamp_get)(struct dsa_switch *ds, int port,
485 struct ifreq *ifr);
486 int (*port_hwtstamp_set)(struct dsa_switch *ds, int port,
487 struct ifreq *ifr);
488 bool (*port_txtstamp)(struct dsa_switch *ds, int port,
489 struct sk_buff *clone, unsigned int type);
490 bool (*port_rxtstamp)(struct dsa_switch *ds, int port,
491 struct sk_buff *skb, unsigned int type);
492};
493
494struct dsa_switch_driver {
495 struct list_head list;
496 const struct dsa_switch_ops *ops;
497};
498
499#if IS_ENABLED(CONFIG_NET_DSA_LEGACY)
500/* Legacy driver registration */
501void register_switch_driver(struct dsa_switch_driver *type);
502void unregister_switch_driver(struct dsa_switch_driver *type);
503struct mii_bus *dsa_host_dev_to_mii_bus(struct device *dev);
504
505#else
506static inline void register_switch_driver(struct dsa_switch_driver *type) { }
507static inline void unregister_switch_driver(struct dsa_switch_driver *type) { }
508static inline struct mii_bus *dsa_host_dev_to_mii_bus(struct device *dev)
509{
510 return NULL;
511}
512#endif
513struct net_device *dsa_dev_to_net_device(struct device *dev);
514
515/* Keep inline for faster access in hot path */
516static inline bool netdev_uses_dsa(struct net_device *dev)
517{
518#if IS_ENABLED(CONFIG_NET_DSA)
519 return dev->dsa_ptr && dev->dsa_ptr->rcv;
520#endif
521 return false;
522}
523
524struct dsa_switch *dsa_switch_alloc(struct device *dev, size_t n);
525void dsa_unregister_switch(struct dsa_switch *ds);
526int dsa_register_switch(struct dsa_switch *ds);
527#ifdef CONFIG_PM_SLEEP
528int dsa_switch_suspend(struct dsa_switch *ds);
529int dsa_switch_resume(struct dsa_switch *ds);
530#else
531static inline int dsa_switch_suspend(struct dsa_switch *ds)
532{
533 return 0;
534}
535static inline int dsa_switch_resume(struct dsa_switch *ds)
536{
537 return 0;
538}
539#endif /* CONFIG_PM_SLEEP */
540
541enum dsa_notifier_type {
542 DSA_PORT_REGISTER,
543 DSA_PORT_UNREGISTER,
544};
545
546struct dsa_notifier_info {
547 struct net_device *dev;
548};
549
550struct dsa_notifier_register_info {
551 struct dsa_notifier_info info; /* must be first */
552 struct net_device *master;
553 unsigned int port_number;
554 unsigned int switch_number;
555};
556
557static inline struct net_device *
558dsa_notifier_info_to_dev(const struct dsa_notifier_info *info)
559{
560 return info->dev;
561}
562
563#if IS_ENABLED(CONFIG_NET_DSA)
564int register_dsa_notifier(struct notifier_block *nb);
565int unregister_dsa_notifier(struct notifier_block *nb);
566int call_dsa_notifiers(unsigned long val, struct net_device *dev,
567 struct dsa_notifier_info *info);
568#else
569static inline int register_dsa_notifier(struct notifier_block *nb)
570{
571 return 0;
572}
573
574static inline int unregister_dsa_notifier(struct notifier_block *nb)
575{
576 return 0;
577}
578
579static inline int call_dsa_notifiers(unsigned long val, struct net_device *dev,
580 struct dsa_notifier_info *info)
581{
582 return NOTIFY_DONE;
583}
584#endif
585
586/* Broadcom tag specific helpers to insert and extract queue/port number */
587#define BRCM_TAG_SET_PORT_QUEUE(p, q) ((p) << 8 | q)
588#define BRCM_TAG_GET_PORT(v) ((v) >> 8)
589#define BRCM_TAG_GET_QUEUE(v) ((v) & 0xff)
590
591#endif
1/*
2 * include/net/dsa.h - Driver for Distributed Switch Architecture switch chips
3 * Copyright (c) 2008-2009 Marvell Semiconductor
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 */
10
11#ifndef __LINUX_NET_DSA_H
12#define __LINUX_NET_DSA_H
13
14#include <linux/if_ether.h>
15#include <linux/list.h>
16#include <linux/timer.h>
17#include <linux/workqueue.h>
18#include <linux/of.h>
19#include <linux/phy.h>
20#include <linux/phy_fixed.h>
21#include <linux/ethtool.h>
22
23enum dsa_tag_protocol {
24 DSA_TAG_PROTO_NONE = 0,
25 DSA_TAG_PROTO_DSA,
26 DSA_TAG_PROTO_TRAILER,
27 DSA_TAG_PROTO_EDSA,
28 DSA_TAG_PROTO_BRCM,
29 DSA_TAG_PROTO_QCA,
30 DSA_TAG_LAST, /* MUST BE LAST */
31};
32
33#define DSA_MAX_SWITCHES 4
34#define DSA_MAX_PORTS 12
35
36#define DSA_RTABLE_NONE -1
37
38struct dsa_chip_data {
39 /*
40 * How to access the switch configuration registers.
41 */
42 struct device *host_dev;
43 int sw_addr;
44
45 /* set to size of eeprom if supported by the switch */
46 int eeprom_len;
47
48 /* Device tree node pointer for this specific switch chip
49 * used during switch setup in case additional properties
50 * and resources needs to be used
51 */
52 struct device_node *of_node;
53
54 /*
55 * The names of the switch's ports. Use "cpu" to
56 * designate the switch port that the cpu is connected to,
57 * "dsa" to indicate that this port is a DSA link to
58 * another switch, NULL to indicate the port is unused,
59 * or any other string to indicate this is a physical port.
60 */
61 char *port_names[DSA_MAX_PORTS];
62 struct device_node *port_dn[DSA_MAX_PORTS];
63
64 /*
65 * An array of which element [a] indicates which port on this
66 * switch should be used to send packets to that are destined
67 * for switch a. Can be NULL if there is only one switch chip.
68 */
69 s8 rtable[DSA_MAX_SWITCHES];
70};
71
72struct dsa_platform_data {
73 /*
74 * Reference to a Linux network interface that connects
75 * to the root switch chip of the tree.
76 */
77 struct device *netdev;
78 struct net_device *of_netdev;
79
80 /*
81 * Info structs describing each of the switch chips
82 * connected via this network interface.
83 */
84 int nr_chips;
85 struct dsa_chip_data *chip;
86};
87
88struct packet_type;
89
90struct dsa_switch_tree {
91 struct list_head list;
92
93 /* Tree identifier */
94 u32 tree;
95
96 /* Number of switches attached to this tree */
97 struct kref refcount;
98
99 /* Has this tree been applied to the hardware? */
100 bool applied;
101
102 /*
103 * Configuration data for the platform device that owns
104 * this dsa switch tree instance.
105 */
106 struct dsa_platform_data *pd;
107
108 /*
109 * Reference to network device to use, and which tagging
110 * protocol to use.
111 */
112 struct net_device *master_netdev;
113 int (*rcv)(struct sk_buff *skb,
114 struct net_device *dev,
115 struct packet_type *pt,
116 struct net_device *orig_dev);
117
118 /*
119 * Original copy of the master netdev ethtool_ops
120 */
121 struct ethtool_ops master_ethtool_ops;
122 const struct ethtool_ops *master_orig_ethtool_ops;
123
124 /*
125 * The switch and port to which the CPU is attached.
126 */
127 s8 cpu_switch;
128 s8 cpu_port;
129
130 /*
131 * Data for the individual switch chips.
132 */
133 struct dsa_switch *ds[DSA_MAX_SWITCHES];
134
135 /*
136 * Tagging protocol operations for adding and removing an
137 * encapsulation tag.
138 */
139 const struct dsa_device_ops *tag_ops;
140};
141
142struct dsa_port {
143 struct net_device *netdev;
144 struct device_node *dn;
145 unsigned int ageing_time;
146 u8 stp_state;
147};
148
149struct dsa_switch {
150 struct device *dev;
151
152 /*
153 * Parent switch tree, and switch index.
154 */
155 struct dsa_switch_tree *dst;
156 int index;
157
158 /*
159 * Give the switch driver somewhere to hang its private data
160 * structure.
161 */
162 void *priv;
163
164 /*
165 * Configuration data for this switch.
166 */
167 struct dsa_chip_data *cd;
168
169 /*
170 * The switch operations.
171 */
172 struct dsa_switch_ops *ops;
173
174 /*
175 * An array of which element [a] indicates which port on this
176 * switch should be used to send packets to that are destined
177 * for switch a. Can be NULL if there is only one switch chip.
178 */
179 s8 rtable[DSA_MAX_SWITCHES];
180
181#ifdef CONFIG_NET_DSA_HWMON
182 /*
183 * Hardware monitoring information
184 */
185 char hwmon_name[IFNAMSIZ + 8];
186 struct device *hwmon_dev;
187#endif
188
189 /*
190 * The lower device this switch uses to talk to the host
191 */
192 struct net_device *master_netdev;
193
194 /*
195 * Slave mii_bus and devices for the individual ports.
196 */
197 u32 dsa_port_mask;
198 u32 cpu_port_mask;
199 u32 enabled_port_mask;
200 u32 phys_mii_mask;
201 struct dsa_port ports[DSA_MAX_PORTS];
202 struct mii_bus *slave_mii_bus;
203};
204
205static inline bool dsa_is_cpu_port(struct dsa_switch *ds, int p)
206{
207 return !!(ds->index == ds->dst->cpu_switch && p == ds->dst->cpu_port);
208}
209
210static inline bool dsa_is_dsa_port(struct dsa_switch *ds, int p)
211{
212 return !!((ds->dsa_port_mask) & (1 << p));
213}
214
215static inline bool dsa_is_port_initialized(struct dsa_switch *ds, int p)
216{
217 return ds->enabled_port_mask & (1 << p) && ds->ports[p].netdev;
218}
219
220static inline u8 dsa_upstream_port(struct dsa_switch *ds)
221{
222 struct dsa_switch_tree *dst = ds->dst;
223
224 /*
225 * If this is the root switch (i.e. the switch that connects
226 * to the CPU), return the cpu port number on this switch.
227 * Else return the (DSA) port number that connects to the
228 * switch that is one hop closer to the cpu.
229 */
230 if (dst->cpu_switch == ds->index)
231 return dst->cpu_port;
232 else
233 return ds->rtable[dst->cpu_switch];
234}
235
236struct switchdev_trans;
237struct switchdev_obj;
238struct switchdev_obj_port_fdb;
239struct switchdev_obj_port_mdb;
240struct switchdev_obj_port_vlan;
241
242struct dsa_switch_ops {
243 struct list_head list;
244
245 /*
246 * Probing and setup.
247 */
248 const char *(*probe)(struct device *dsa_dev,
249 struct device *host_dev, int sw_addr,
250 void **priv);
251
252 enum dsa_tag_protocol (*get_tag_protocol)(struct dsa_switch *ds);
253
254 int (*setup)(struct dsa_switch *ds);
255 int (*set_addr)(struct dsa_switch *ds, u8 *addr);
256 u32 (*get_phy_flags)(struct dsa_switch *ds, int port);
257
258 /*
259 * Access to the switch's PHY registers.
260 */
261 int (*phy_read)(struct dsa_switch *ds, int port, int regnum);
262 int (*phy_write)(struct dsa_switch *ds, int port,
263 int regnum, u16 val);
264
265 /*
266 * Link state adjustment (called from libphy)
267 */
268 void (*adjust_link)(struct dsa_switch *ds, int port,
269 struct phy_device *phydev);
270 void (*fixed_link_update)(struct dsa_switch *ds, int port,
271 struct fixed_phy_status *st);
272
273 /*
274 * ethtool hardware statistics.
275 */
276 void (*get_strings)(struct dsa_switch *ds, int port, uint8_t *data);
277 void (*get_ethtool_stats)(struct dsa_switch *ds,
278 int port, uint64_t *data);
279 int (*get_sset_count)(struct dsa_switch *ds);
280
281 /*
282 * ethtool Wake-on-LAN
283 */
284 void (*get_wol)(struct dsa_switch *ds, int port,
285 struct ethtool_wolinfo *w);
286 int (*set_wol)(struct dsa_switch *ds, int port,
287 struct ethtool_wolinfo *w);
288
289 /*
290 * Suspend and resume
291 */
292 int (*suspend)(struct dsa_switch *ds);
293 int (*resume)(struct dsa_switch *ds);
294
295 /*
296 * Port enable/disable
297 */
298 int (*port_enable)(struct dsa_switch *ds, int port,
299 struct phy_device *phy);
300 void (*port_disable)(struct dsa_switch *ds, int port,
301 struct phy_device *phy);
302
303 /*
304 * EEE setttings
305 */
306 int (*set_eee)(struct dsa_switch *ds, int port,
307 struct phy_device *phydev,
308 struct ethtool_eee *e);
309 int (*get_eee)(struct dsa_switch *ds, int port,
310 struct ethtool_eee *e);
311
312#ifdef CONFIG_NET_DSA_HWMON
313 /* Hardware monitoring */
314 int (*get_temp)(struct dsa_switch *ds, int *temp);
315 int (*get_temp_limit)(struct dsa_switch *ds, int *temp);
316 int (*set_temp_limit)(struct dsa_switch *ds, int temp);
317 int (*get_temp_alarm)(struct dsa_switch *ds, bool *alarm);
318#endif
319
320 /* EEPROM access */
321 int (*get_eeprom_len)(struct dsa_switch *ds);
322 int (*get_eeprom)(struct dsa_switch *ds,
323 struct ethtool_eeprom *eeprom, u8 *data);
324 int (*set_eeprom)(struct dsa_switch *ds,
325 struct ethtool_eeprom *eeprom, u8 *data);
326
327 /*
328 * Register access.
329 */
330 int (*get_regs_len)(struct dsa_switch *ds, int port);
331 void (*get_regs)(struct dsa_switch *ds, int port,
332 struct ethtool_regs *regs, void *p);
333
334 /*
335 * Bridge integration
336 */
337 int (*set_ageing_time)(struct dsa_switch *ds, unsigned int msecs);
338 int (*port_bridge_join)(struct dsa_switch *ds, int port,
339 struct net_device *bridge);
340 void (*port_bridge_leave)(struct dsa_switch *ds, int port);
341 void (*port_stp_state_set)(struct dsa_switch *ds, int port,
342 u8 state);
343 void (*port_fast_age)(struct dsa_switch *ds, int port);
344
345 /*
346 * VLAN support
347 */
348 int (*port_vlan_filtering)(struct dsa_switch *ds, int port,
349 bool vlan_filtering);
350 int (*port_vlan_prepare)(struct dsa_switch *ds, int port,
351 const struct switchdev_obj_port_vlan *vlan,
352 struct switchdev_trans *trans);
353 void (*port_vlan_add)(struct dsa_switch *ds, int port,
354 const struct switchdev_obj_port_vlan *vlan,
355 struct switchdev_trans *trans);
356 int (*port_vlan_del)(struct dsa_switch *ds, int port,
357 const struct switchdev_obj_port_vlan *vlan);
358 int (*port_vlan_dump)(struct dsa_switch *ds, int port,
359 struct switchdev_obj_port_vlan *vlan,
360 int (*cb)(struct switchdev_obj *obj));
361
362 /*
363 * Forwarding database
364 */
365 int (*port_fdb_prepare)(struct dsa_switch *ds, int port,
366 const struct switchdev_obj_port_fdb *fdb,
367 struct switchdev_trans *trans);
368 void (*port_fdb_add)(struct dsa_switch *ds, int port,
369 const struct switchdev_obj_port_fdb *fdb,
370 struct switchdev_trans *trans);
371 int (*port_fdb_del)(struct dsa_switch *ds, int port,
372 const struct switchdev_obj_port_fdb *fdb);
373 int (*port_fdb_dump)(struct dsa_switch *ds, int port,
374 struct switchdev_obj_port_fdb *fdb,
375 int (*cb)(struct switchdev_obj *obj));
376
377 /*
378 * Multicast database
379 */
380 int (*port_mdb_prepare)(struct dsa_switch *ds, int port,
381 const struct switchdev_obj_port_mdb *mdb,
382 struct switchdev_trans *trans);
383 void (*port_mdb_add)(struct dsa_switch *ds, int port,
384 const struct switchdev_obj_port_mdb *mdb,
385 struct switchdev_trans *trans);
386 int (*port_mdb_del)(struct dsa_switch *ds, int port,
387 const struct switchdev_obj_port_mdb *mdb);
388 int (*port_mdb_dump)(struct dsa_switch *ds, int port,
389 struct switchdev_obj_port_mdb *mdb,
390 int (*cb)(struct switchdev_obj *obj));
391};
392
393void register_switch_driver(struct dsa_switch_ops *type);
394void unregister_switch_driver(struct dsa_switch_ops *type);
395struct mii_bus *dsa_host_dev_to_mii_bus(struct device *dev);
396
397static inline bool dsa_uses_tagged_protocol(struct dsa_switch_tree *dst)
398{
399 return dst->rcv != NULL;
400}
401
402void dsa_unregister_switch(struct dsa_switch *ds);
403int dsa_register_switch(struct dsa_switch *ds, struct device_node *np);
404#ifdef CONFIG_PM_SLEEP
405int dsa_switch_suspend(struct dsa_switch *ds);
406int dsa_switch_resume(struct dsa_switch *ds);
407#else
408static inline int dsa_switch_suspend(struct dsa_switch *ds)
409{
410 return 0;
411}
412static inline int dsa_switch_resume(struct dsa_switch *ds)
413{
414 return 0;
415}
416#endif /* CONFIG_PM_SLEEP */
417
418#endif