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
14 #include <linux/if_ether.h>
15 #include <linux/list.h>
16 #include <linux/notifier.h>
17 #include <linux/timer.h>
18 #include <linux/workqueue.h>
20 #include <linux/phy.h>
21 #include <linux/phy_fixed.h>
22 #include <linux/ethtool.h>
26 enum dsa_tag_protocol {
27 DSA_TAG_PROTO_NONE = 0,
29 DSA_TAG_PROTO_TRAILER,
33 DSA_TAG_LAST, /* MUST BE LAST */
36 #define DSA_MAX_SWITCHES 4
37 #define DSA_MAX_PORTS 12
39 #define DSA_RTABLE_NONE -1
41 struct dsa_chip_data {
43 * How to access the switch configuration registers.
45 struct device *host_dev;
49 * Reference to network devices
51 struct device *netdev[DSA_MAX_PORTS];
53 /* set to size of eeprom if supported by the switch */
56 /* Device tree node pointer for this specific switch chip
57 * used during switch setup in case additional properties
58 * and resources needs to be used
60 struct device_node *of_node;
63 * The names of the switch's ports. Use "cpu" to
64 * designate the switch port that the cpu is connected to,
65 * "dsa" to indicate that this port is a DSA link to
66 * another switch, NULL to indicate the port is unused,
67 * or any other string to indicate this is a physical port.
69 char *port_names[DSA_MAX_PORTS];
70 struct device_node *port_dn[DSA_MAX_PORTS];
73 * An array of which element [a] indicates which port on this
74 * switch should be used to send packets to that are destined
75 * for switch a. Can be NULL if there is only one switch chip.
77 s8 rtable[DSA_MAX_SWITCHES];
80 struct dsa_platform_data {
82 * Reference to a Linux network interface that connects
83 * to the root switch chip of the tree.
85 struct device *netdev;
86 struct net_device *of_netdev;
89 * Info structs describing each of the switch chips
90 * connected via this network interface.
93 struct dsa_chip_data *chip;
98 struct dsa_switch_tree {
99 struct list_head list;
101 /* Notifier chain for switch-wide events */
102 struct raw_notifier_head nh;
104 /* Tree identifier */
107 /* Number of switches attached to this tree */
108 struct kref refcount;
110 /* Has this tree been applied to the hardware? */
114 * Configuration data for the platform device that owns
115 * this dsa switch tree instance.
117 struct dsa_platform_data *pd;
120 * Reference to network device to use, and which tagging
123 struct net_device *master_netdev;
124 int (*rcv)(struct sk_buff *skb,
125 struct net_device *dev,
126 struct packet_type *pt,
127 struct net_device *orig_dev);
130 * Original copy of the master netdev ethtool_ops
132 struct ethtool_ops master_ethtool_ops;
133 const struct ethtool_ops *master_orig_ethtool_ops;
136 * The switch and port to which the CPU is attached.
138 struct dsa_switch *cpu_switch;
142 * Data for the individual switch chips.
144 struct dsa_switch *ds[DSA_MAX_SWITCHES];
147 * Tagging protocol operations for adding and removing an
150 const struct dsa_device_ops *tag_ops;
153 /* TC matchall action types, only mirroring for now */
154 enum dsa_port_mall_action_type {
155 DSA_PORT_MALL_MIRROR,
158 /* TC mirroring entry */
159 struct dsa_mall_mirror_tc_entry {
164 /* TC matchall entry */
165 struct dsa_mall_tc_entry {
166 struct list_head list;
167 unsigned long cookie;
168 enum dsa_port_mall_action_type type;
170 struct dsa_mall_mirror_tc_entry mirror;
176 struct dsa_switch *ds;
179 struct net_device *netdev;
180 struct device_node *dn;
181 unsigned int ageing_time;
183 struct net_device *bridge_dev;
190 * Parent switch tree, and switch index.
192 struct dsa_switch_tree *dst;
195 /* Listener for switch fabric events */
196 struct notifier_block nb;
199 * Give the switch driver somewhere to hang its private data
205 * Configuration data for this switch.
207 struct dsa_chip_data *cd;
210 * The switch operations.
212 const struct dsa_switch_ops *ops;
215 * An array of which element [a] indicates which port on this
216 * switch should be used to send packets to that are destined
217 * for switch a. Can be NULL if there is only one switch chip.
219 s8 rtable[DSA_MAX_SWITCHES];
222 * The lower device this switch uses to talk to the host
224 struct net_device *master_netdev;
227 * Slave mii_bus and devices for the individual ports.
231 u32 enabled_port_mask;
233 struct mii_bus *slave_mii_bus;
235 /* Dynamically allocated ports, keep last */
237 struct dsa_port ports[];
240 static inline bool dsa_is_cpu_port(struct dsa_switch *ds, int p)
242 return !!(ds == ds->dst->cpu_switch && p == ds->dst->cpu_port);
245 static inline bool dsa_is_dsa_port(struct dsa_switch *ds, int p)
247 return !!((ds->dsa_port_mask) & (1 << p));
250 static inline bool dsa_is_port_initialized(struct dsa_switch *ds, int p)
252 return ds->enabled_port_mask & (1 << p) && ds->ports[p].netdev;
255 static inline u8 dsa_upstream_port(struct dsa_switch *ds)
257 struct dsa_switch_tree *dst = ds->dst;
260 * If this is the root switch (i.e. the switch that connects
261 * to the CPU), return the cpu port number on this switch.
262 * Else return the (DSA) port number that connects to the
263 * switch that is one hop closer to the cpu.
265 if (dst->cpu_switch == ds)
266 return dst->cpu_port;
268 return ds->rtable[dst->cpu_switch->index];
271 struct switchdev_trans;
272 struct switchdev_obj;
273 struct switchdev_obj_port_fdb;
274 struct switchdev_obj_port_mdb;
275 struct switchdev_obj_port_vlan;
277 #define DSA_NOTIFIER_BRIDGE_JOIN 1
278 #define DSA_NOTIFIER_BRIDGE_LEAVE 2
280 /* DSA_NOTIFIER_BRIDGE_* */
281 struct dsa_notifier_bridge_info {
282 struct net_device *br;
287 struct dsa_switch_ops {
291 const char *(*probe)(struct device *dsa_dev,
292 struct device *host_dev, int sw_addr,
295 enum dsa_tag_protocol (*get_tag_protocol)(struct dsa_switch *ds);
297 int (*setup)(struct dsa_switch *ds);
298 int (*set_addr)(struct dsa_switch *ds, u8 *addr);
299 u32 (*get_phy_flags)(struct dsa_switch *ds, int port);
302 * Access to the switch's PHY registers.
304 int (*phy_read)(struct dsa_switch *ds, int port, int regnum);
305 int (*phy_write)(struct dsa_switch *ds, int port,
306 int regnum, u16 val);
309 * Link state adjustment (called from libphy)
311 void (*adjust_link)(struct dsa_switch *ds, int port,
312 struct phy_device *phydev);
313 void (*fixed_link_update)(struct dsa_switch *ds, int port,
314 struct fixed_phy_status *st);
317 * ethtool hardware statistics.
319 void (*get_strings)(struct dsa_switch *ds, int port, uint8_t *data);
320 void (*get_ethtool_stats)(struct dsa_switch *ds,
321 int port, uint64_t *data);
322 int (*get_sset_count)(struct dsa_switch *ds);
325 * ethtool Wake-on-LAN
327 void (*get_wol)(struct dsa_switch *ds, int port,
328 struct ethtool_wolinfo *w);
329 int (*set_wol)(struct dsa_switch *ds, int port,
330 struct ethtool_wolinfo *w);
335 int (*suspend)(struct dsa_switch *ds);
336 int (*resume)(struct dsa_switch *ds);
339 * Port enable/disable
341 int (*port_enable)(struct dsa_switch *ds, int port,
342 struct phy_device *phy);
343 void (*port_disable)(struct dsa_switch *ds, int port,
344 struct phy_device *phy);
349 int (*set_eee)(struct dsa_switch *ds, int port,
350 struct phy_device *phydev,
351 struct ethtool_eee *e);
352 int (*get_eee)(struct dsa_switch *ds, int port,
353 struct ethtool_eee *e);
356 int (*get_eeprom_len)(struct dsa_switch *ds);
357 int (*get_eeprom)(struct dsa_switch *ds,
358 struct ethtool_eeprom *eeprom, u8 *data);
359 int (*set_eeprom)(struct dsa_switch *ds,
360 struct ethtool_eeprom *eeprom, u8 *data);
365 int (*get_regs_len)(struct dsa_switch *ds, int port);
366 void (*get_regs)(struct dsa_switch *ds, int port,
367 struct ethtool_regs *regs, void *p);
372 int (*set_ageing_time)(struct dsa_switch *ds, unsigned int msecs);
373 int (*port_bridge_join)(struct dsa_switch *ds, int port,
374 struct net_device *bridge);
375 void (*port_bridge_leave)(struct dsa_switch *ds, int port,
376 struct net_device *bridge);
377 void (*port_stp_state_set)(struct dsa_switch *ds, int port,
379 void (*port_fast_age)(struct dsa_switch *ds, int port);
384 int (*port_vlan_filtering)(struct dsa_switch *ds, int port,
385 bool vlan_filtering);
386 int (*port_vlan_prepare)(struct dsa_switch *ds, int port,
387 const struct switchdev_obj_port_vlan *vlan,
388 struct switchdev_trans *trans);
389 void (*port_vlan_add)(struct dsa_switch *ds, int port,
390 const struct switchdev_obj_port_vlan *vlan,
391 struct switchdev_trans *trans);
392 int (*port_vlan_del)(struct dsa_switch *ds, int port,
393 const struct switchdev_obj_port_vlan *vlan);
394 int (*port_vlan_dump)(struct dsa_switch *ds, int port,
395 struct switchdev_obj_port_vlan *vlan,
396 int (*cb)(struct switchdev_obj *obj));
399 * Forwarding database
401 int (*port_fdb_prepare)(struct dsa_switch *ds, int port,
402 const struct switchdev_obj_port_fdb *fdb,
403 struct switchdev_trans *trans);
404 void (*port_fdb_add)(struct dsa_switch *ds, int port,
405 const struct switchdev_obj_port_fdb *fdb,
406 struct switchdev_trans *trans);
407 int (*port_fdb_del)(struct dsa_switch *ds, int port,
408 const struct switchdev_obj_port_fdb *fdb);
409 int (*port_fdb_dump)(struct dsa_switch *ds, int port,
410 struct switchdev_obj_port_fdb *fdb,
411 int (*cb)(struct switchdev_obj *obj));
416 int (*port_mdb_prepare)(struct dsa_switch *ds, int port,
417 const struct switchdev_obj_port_mdb *mdb,
418 struct switchdev_trans *trans);
419 void (*port_mdb_add)(struct dsa_switch *ds, int port,
420 const struct switchdev_obj_port_mdb *mdb,
421 struct switchdev_trans *trans);
422 int (*port_mdb_del)(struct dsa_switch *ds, int port,
423 const struct switchdev_obj_port_mdb *mdb);
424 int (*port_mdb_dump)(struct dsa_switch *ds, int port,
425 struct switchdev_obj_port_mdb *mdb,
426 int (*cb)(struct switchdev_obj *obj));
431 int (*get_rxnfc)(struct dsa_switch *ds, int port,
432 struct ethtool_rxnfc *nfc, u32 *rule_locs);
433 int (*set_rxnfc)(struct dsa_switch *ds, int port,
434 struct ethtool_rxnfc *nfc);
439 int (*port_mirror_add)(struct dsa_switch *ds, int port,
440 struct dsa_mall_mirror_tc_entry *mirror,
442 void (*port_mirror_del)(struct dsa_switch *ds, int port,
443 struct dsa_mall_mirror_tc_entry *mirror);
446 struct dsa_switch_driver {
447 struct list_head list;
448 const struct dsa_switch_ops *ops;
451 void register_switch_driver(struct dsa_switch_driver *type);
452 void unregister_switch_driver(struct dsa_switch_driver *type);
453 struct mii_bus *dsa_host_dev_to_mii_bus(struct device *dev);
454 struct net_device *dsa_dev_to_net_device(struct device *dev);
456 static inline bool dsa_uses_tagged_protocol(struct dsa_switch_tree *dst)
458 return dst->rcv != NULL;
461 struct dsa_switch *dsa_switch_alloc(struct device *dev, size_t n);
462 void dsa_unregister_switch(struct dsa_switch *ds);
463 int dsa_register_switch(struct dsa_switch *ds, struct device *dev);
464 #ifdef CONFIG_PM_SLEEP
465 int dsa_switch_suspend(struct dsa_switch *ds);
466 int dsa_switch_resume(struct dsa_switch *ds);
468 static inline int dsa_switch_suspend(struct dsa_switch *ds)
472 static inline int dsa_switch_resume(struct dsa_switch *ds)
476 #endif /* CONFIG_PM_SLEEP */