2 * include/net/dsa.h - Driver for Distributed Switch Architecture switch chips
3 * Copyright (c) 2008-2009 Marvell Semiconductor
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.
11 #ifndef __LINUX_NET_DSA_H
12 #define __LINUX_NET_DSA_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>
21 #include <linux/ethtool.h>
25 struct fixed_phy_status;
27 enum dsa_tag_protocol {
28 DSA_TAG_PROTO_NONE = 0,
30 DSA_TAG_PROTO_TRAILER,
34 DSA_TAG_LAST, /* MUST BE LAST */
37 #define DSA_MAX_SWITCHES 4
38 #define DSA_MAX_PORTS 12
40 #define DSA_RTABLE_NONE -1
42 struct dsa_chip_data {
44 * How to access the switch configuration registers.
46 struct device *host_dev;
50 * Reference to network devices
52 struct device *netdev[DSA_MAX_PORTS];
54 /* set to size of eeprom if supported by the switch */
57 /* Device tree node pointer for this specific switch chip
58 * used during switch setup in case additional properties
59 * and resources needs to be used
61 struct device_node *of_node;
64 * The names of the switch's ports. Use "cpu" to
65 * designate the switch port that the cpu is connected to,
66 * "dsa" to indicate that this port is a DSA link to
67 * another switch, NULL to indicate the port is unused,
68 * or any other string to indicate this is a physical port.
70 char *port_names[DSA_MAX_PORTS];
71 struct device_node *port_dn[DSA_MAX_PORTS];
74 * An array of which element [a] indicates which port on this
75 * switch should be used to send packets to that are destined
76 * for switch a. Can be NULL if there is only one switch chip.
78 s8 rtable[DSA_MAX_SWITCHES];
81 struct dsa_platform_data {
83 * Reference to a Linux network interface that connects
84 * to the root switch chip of the tree.
86 struct device *netdev;
87 struct net_device *of_netdev;
90 * Info structs describing each of the switch chips
91 * connected via this network interface.
94 struct dsa_chip_data *chip;
99 struct dsa_switch_tree {
100 struct list_head list;
102 /* Notifier chain for switch-wide events */
103 struct raw_notifier_head nh;
105 /* Tree identifier */
108 /* Number of switches attached to this tree */
109 struct kref refcount;
111 /* Has this tree been applied to the hardware? */
115 * Configuration data for the platform device that owns
116 * this dsa switch tree instance.
118 struct dsa_platform_data *pd;
121 * Reference to network device to use, and which tagging
124 struct net_device *master_netdev;
125 int (*rcv)(struct sk_buff *skb,
126 struct net_device *dev,
127 struct packet_type *pt,
128 struct net_device *orig_dev);
131 * Original copy of the master netdev ethtool_ops
133 struct ethtool_ops master_ethtool_ops;
134 const struct ethtool_ops *master_orig_ethtool_ops;
137 * The switch and port to which the CPU is attached.
139 struct dsa_switch *cpu_switch;
143 * Data for the individual switch chips.
145 struct dsa_switch *ds[DSA_MAX_SWITCHES];
148 * Tagging protocol operations for adding and removing an
151 const struct dsa_device_ops *tag_ops;
154 /* TC matchall action types, only mirroring for now */
155 enum dsa_port_mall_action_type {
156 DSA_PORT_MALL_MIRROR,
159 /* TC mirroring entry */
160 struct dsa_mall_mirror_tc_entry {
165 /* TC matchall entry */
166 struct dsa_mall_tc_entry {
167 struct list_head list;
168 unsigned long cookie;
169 enum dsa_port_mall_action_type type;
171 struct dsa_mall_mirror_tc_entry mirror;
177 struct dsa_switch *ds;
180 struct net_device *netdev;
181 struct device_node *dn;
182 unsigned int ageing_time;
184 struct net_device *bridge_dev;
191 * Parent switch tree, and switch index.
193 struct dsa_switch_tree *dst;
196 /* Listener for switch fabric events */
197 struct notifier_block nb;
200 * Give the switch driver somewhere to hang its private data
206 * Configuration data for this switch.
208 struct dsa_chip_data *cd;
211 * The switch operations.
213 const struct dsa_switch_ops *ops;
216 * An array of which element [a] indicates which port on this
217 * switch should be used to send packets to that are destined
218 * for switch a. Can be NULL if there is only one switch chip.
220 s8 rtable[DSA_MAX_SWITCHES];
223 * The lower device this switch uses to talk to the host
225 struct net_device *master_netdev;
228 * Slave mii_bus and devices for the individual ports.
232 u32 enabled_port_mask;
234 struct mii_bus *slave_mii_bus;
236 /* Ageing Time limits in msecs */
237 unsigned int ageing_time_min;
238 unsigned int ageing_time_max;
240 /* Dynamically allocated ports, keep last */
242 struct dsa_port ports[];
245 static inline bool dsa_is_cpu_port(struct dsa_switch *ds, int p)
247 return !!(ds == ds->dst->cpu_switch && p == ds->dst->cpu_port);
250 static inline bool dsa_is_dsa_port(struct dsa_switch *ds, int p)
252 return !!((ds->dsa_port_mask) & (1 << p));
255 static inline bool dsa_is_normal_port(struct dsa_switch *ds, int p)
257 return !dsa_is_cpu_port(ds, p) && !dsa_is_dsa_port(ds, p);
260 static inline bool dsa_is_port_initialized(struct dsa_switch *ds, int p)
262 return ds->enabled_port_mask & (1 << p) && ds->ports[p].netdev;
265 static inline u8 dsa_upstream_port(struct dsa_switch *ds)
267 struct dsa_switch_tree *dst = ds->dst;
270 * If this is the root switch (i.e. the switch that connects
271 * to the CPU), return the cpu port number on this switch.
272 * Else return the (DSA) port number that connects to the
273 * switch that is one hop closer to the cpu.
275 if (dst->cpu_switch == ds)
276 return dst->cpu_port;
278 return ds->rtable[dst->cpu_switch->index];
281 struct switchdev_trans;
282 struct switchdev_obj;
283 struct switchdev_obj_port_fdb;
284 struct switchdev_obj_port_mdb;
285 struct switchdev_obj_port_vlan;
287 #define DSA_NOTIFIER_BRIDGE_JOIN 1
288 #define DSA_NOTIFIER_BRIDGE_LEAVE 2
290 /* DSA_NOTIFIER_BRIDGE_* */
291 struct dsa_notifier_bridge_info {
292 struct net_device *br;
297 struct dsa_switch_ops {
301 const char *(*probe)(struct device *dsa_dev,
302 struct device *host_dev, int sw_addr,
305 enum dsa_tag_protocol (*get_tag_protocol)(struct dsa_switch *ds);
307 int (*setup)(struct dsa_switch *ds);
308 int (*set_addr)(struct dsa_switch *ds, u8 *addr);
309 u32 (*get_phy_flags)(struct dsa_switch *ds, int port);
312 * Access to the switch's PHY registers.
314 int (*phy_read)(struct dsa_switch *ds, int port, int regnum);
315 int (*phy_write)(struct dsa_switch *ds, int port,
316 int regnum, u16 val);
319 * Link state adjustment (called from libphy)
321 void (*adjust_link)(struct dsa_switch *ds, int port,
322 struct phy_device *phydev);
323 void (*fixed_link_update)(struct dsa_switch *ds, int port,
324 struct fixed_phy_status *st);
327 * ethtool hardware statistics.
329 void (*get_strings)(struct dsa_switch *ds, int port, uint8_t *data);
330 void (*get_ethtool_stats)(struct dsa_switch *ds,
331 int port, uint64_t *data);
332 int (*get_sset_count)(struct dsa_switch *ds);
335 * ethtool Wake-on-LAN
337 void (*get_wol)(struct dsa_switch *ds, int port,
338 struct ethtool_wolinfo *w);
339 int (*set_wol)(struct dsa_switch *ds, int port,
340 struct ethtool_wolinfo *w);
345 int (*suspend)(struct dsa_switch *ds);
346 int (*resume)(struct dsa_switch *ds);
349 * Port enable/disable
351 int (*port_enable)(struct dsa_switch *ds, int port,
352 struct phy_device *phy);
353 void (*port_disable)(struct dsa_switch *ds, int port,
354 struct phy_device *phy);
359 int (*set_eee)(struct dsa_switch *ds, int port,
360 struct phy_device *phydev,
361 struct ethtool_eee *e);
362 int (*get_eee)(struct dsa_switch *ds, int port,
363 struct ethtool_eee *e);
366 int (*get_eeprom_len)(struct dsa_switch *ds);
367 int (*get_eeprom)(struct dsa_switch *ds,
368 struct ethtool_eeprom *eeprom, u8 *data);
369 int (*set_eeprom)(struct dsa_switch *ds,
370 struct ethtool_eeprom *eeprom, u8 *data);
375 int (*get_regs_len)(struct dsa_switch *ds, int port);
376 void (*get_regs)(struct dsa_switch *ds, int port,
377 struct ethtool_regs *regs, void *p);
382 int (*set_ageing_time)(struct dsa_switch *ds, unsigned int msecs);
383 int (*port_bridge_join)(struct dsa_switch *ds, int port,
384 struct net_device *bridge);
385 void (*port_bridge_leave)(struct dsa_switch *ds, int port,
386 struct net_device *bridge);
387 void (*port_stp_state_set)(struct dsa_switch *ds, int port,
389 void (*port_fast_age)(struct dsa_switch *ds, int port);
394 int (*port_vlan_filtering)(struct dsa_switch *ds, int port,
395 bool vlan_filtering);
396 int (*port_vlan_prepare)(struct dsa_switch *ds, int port,
397 const struct switchdev_obj_port_vlan *vlan,
398 struct switchdev_trans *trans);
399 void (*port_vlan_add)(struct dsa_switch *ds, int port,
400 const struct switchdev_obj_port_vlan *vlan,
401 struct switchdev_trans *trans);
402 int (*port_vlan_del)(struct dsa_switch *ds, int port,
403 const struct switchdev_obj_port_vlan *vlan);
404 int (*port_vlan_dump)(struct dsa_switch *ds, int port,
405 struct switchdev_obj_port_vlan *vlan,
406 int (*cb)(struct switchdev_obj *obj));
409 * Forwarding database
411 int (*port_fdb_prepare)(struct dsa_switch *ds, int port,
412 const struct switchdev_obj_port_fdb *fdb,
413 struct switchdev_trans *trans);
414 void (*port_fdb_add)(struct dsa_switch *ds, int port,
415 const struct switchdev_obj_port_fdb *fdb,
416 struct switchdev_trans *trans);
417 int (*port_fdb_del)(struct dsa_switch *ds, int port,
418 const struct switchdev_obj_port_fdb *fdb);
419 int (*port_fdb_dump)(struct dsa_switch *ds, int port,
420 struct switchdev_obj_port_fdb *fdb,
421 int (*cb)(struct switchdev_obj *obj));
426 int (*port_mdb_prepare)(struct dsa_switch *ds, int port,
427 const struct switchdev_obj_port_mdb *mdb,
428 struct switchdev_trans *trans);
429 void (*port_mdb_add)(struct dsa_switch *ds, int port,
430 const struct switchdev_obj_port_mdb *mdb,
431 struct switchdev_trans *trans);
432 int (*port_mdb_del)(struct dsa_switch *ds, int port,
433 const struct switchdev_obj_port_mdb *mdb);
434 int (*port_mdb_dump)(struct dsa_switch *ds, int port,
435 struct switchdev_obj_port_mdb *mdb,
436 int (*cb)(struct switchdev_obj *obj));
441 int (*get_rxnfc)(struct dsa_switch *ds, int port,
442 struct ethtool_rxnfc *nfc, u32 *rule_locs);
443 int (*set_rxnfc)(struct dsa_switch *ds, int port,
444 struct ethtool_rxnfc *nfc);
449 int (*port_mirror_add)(struct dsa_switch *ds, int port,
450 struct dsa_mall_mirror_tc_entry *mirror,
452 void (*port_mirror_del)(struct dsa_switch *ds, int port,
453 struct dsa_mall_mirror_tc_entry *mirror);
456 struct dsa_switch_driver {
457 struct list_head list;
458 const struct dsa_switch_ops *ops;
461 void register_switch_driver(struct dsa_switch_driver *type);
462 void unregister_switch_driver(struct dsa_switch_driver *type);
463 struct mii_bus *dsa_host_dev_to_mii_bus(struct device *dev);
464 struct net_device *dsa_dev_to_net_device(struct device *dev);
466 static inline bool dsa_uses_tagged_protocol(struct dsa_switch_tree *dst)
468 return dst->rcv != NULL;
471 struct dsa_switch *dsa_switch_alloc(struct device *dev, size_t n);
472 void dsa_unregister_switch(struct dsa_switch *ds);
473 int dsa_register_switch(struct dsa_switch *ds, struct device *dev);
474 #ifdef CONFIG_PM_SLEEP
475 int dsa_switch_suspend(struct dsa_switch *ds);
476 int dsa_switch_resume(struct dsa_switch *ds);
478 static inline int dsa_switch_suspend(struct dsa_switch *ds)
482 static inline int dsa_switch_resume(struct dsa_switch *ds)
486 #endif /* CONFIG_PM_SLEEP */