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/timer.h>
17 #include <linux/workqueue.h>
19 #include <linux/phy.h>
20 #include <linux/phy_fixed.h>
21 #include <linux/ethtool.h>
23 enum dsa_tag_protocol {
24 DSA_TAG_PROTO_NONE = 0,
26 DSA_TAG_PROTO_TRAILER,
29 DSA_TAG_LAST, /* MUST BE LAST */
32 #define DSA_MAX_SWITCHES 4
33 #define DSA_MAX_PORTS 12
35 struct dsa_chip_data {
37 * How to access the switch configuration registers.
39 struct device *host_dev;
42 /* set to size of eeprom if supported by the switch */
45 /* Device tree node pointer for this specific switch chip
46 * used during switch setup in case additional properties
47 * and resources needs to be used
49 struct device_node *of_node;
52 * The names of the switch's ports. Use "cpu" to
53 * designate the switch port that the cpu is connected to,
54 * "dsa" to indicate that this port is a DSA link to
55 * another switch, NULL to indicate the port is unused,
56 * or any other string to indicate this is a physical port.
58 char *port_names[DSA_MAX_PORTS];
59 struct device_node *port_dn[DSA_MAX_PORTS];
62 * An array of which element [a] indicates which port on this
63 * switch should be used to send packets to that are destined
64 * for switch a. Can be NULL if there is only one switch chip.
66 s8 rtable[DSA_MAX_SWITCHES];
69 struct dsa_platform_data {
71 * Reference to a Linux network interface that connects
72 * to the root switch chip of the tree.
74 struct device *netdev;
75 struct net_device *of_netdev;
78 * Info structs describing each of the switch chips
79 * connected via this network interface.
82 struct dsa_chip_data *chip;
87 struct dsa_switch_tree {
88 struct list_head list;
93 /* Number of switches attached to this tree */
96 /* Has this tree been applied to the hardware? */
100 * Configuration data for the platform device that owns
101 * this dsa switch tree instance.
103 struct dsa_platform_data *pd;
106 * Reference to network device to use, and which tagging
109 struct net_device *master_netdev;
110 int (*rcv)(struct sk_buff *skb,
111 struct net_device *dev,
112 struct packet_type *pt,
113 struct net_device *orig_dev);
116 * Original copy of the master netdev ethtool_ops
118 struct ethtool_ops master_ethtool_ops;
119 const struct ethtool_ops *master_orig_ethtool_ops;
122 * The switch and port to which the CPU is attached.
128 * Data for the individual switch chips.
130 struct dsa_switch *ds[DSA_MAX_SWITCHES];
133 * Tagging protocol operations for adding and removing an
136 const struct dsa_device_ops *tag_ops;
140 struct net_device *netdev;
141 struct device_node *dn;
148 * Parent switch tree, and switch index.
150 struct dsa_switch_tree *dst;
154 * Give the switch driver somewhere to hang its private data
160 * Configuration data for this switch.
162 struct dsa_chip_data *cd;
165 * The used switch driver.
167 struct dsa_switch_driver *drv;
170 * An array of which element [a] indicates which port on this
171 * switch should be used to send packets to that are destined
172 * for switch a. Can be NULL if there is only one switch chip.
174 s8 rtable[DSA_MAX_SWITCHES];
176 #ifdef CONFIG_NET_DSA_HWMON
178 * Hardware monitoring information
180 char hwmon_name[IFNAMSIZ + 8];
181 struct device *hwmon_dev;
185 * The lower device this switch uses to talk to the host
187 struct net_device *master_netdev;
190 * Slave mii_bus and devices for the individual ports.
194 u32 enabled_port_mask;
196 struct dsa_port ports[DSA_MAX_PORTS];
197 struct mii_bus *slave_mii_bus;
200 static inline bool dsa_is_cpu_port(struct dsa_switch *ds, int p)
202 return !!(ds->index == ds->dst->cpu_switch && p == ds->dst->cpu_port);
205 static inline bool dsa_is_dsa_port(struct dsa_switch *ds, int p)
207 return !!((ds->dsa_port_mask) & (1 << p));
210 static inline bool dsa_is_port_initialized(struct dsa_switch *ds, int p)
212 return ds->enabled_port_mask & (1 << p) && ds->ports[p].netdev;
215 static inline u8 dsa_upstream_port(struct dsa_switch *ds)
217 struct dsa_switch_tree *dst = ds->dst;
220 * If this is the root switch (i.e. the switch that connects
221 * to the CPU), return the cpu port number on this switch.
222 * Else return the (DSA) port number that connects to the
223 * switch that is one hop closer to the cpu.
225 if (dst->cpu_switch == ds->index)
226 return dst->cpu_port;
228 return ds->rtable[dst->cpu_switch];
231 struct switchdev_trans;
232 struct switchdev_obj;
233 struct switchdev_obj_port_fdb;
234 struct switchdev_obj_port_vlan;
236 struct dsa_switch_driver {
237 struct list_head list;
239 enum dsa_tag_protocol tag_protocol;
244 const char *(*probe)(struct device *dsa_dev,
245 struct device *host_dev, int sw_addr,
247 int (*setup)(struct dsa_switch *ds);
248 int (*set_addr)(struct dsa_switch *ds, u8 *addr);
249 u32 (*get_phy_flags)(struct dsa_switch *ds, int port);
252 * Access to the switch's PHY registers.
254 int (*phy_read)(struct dsa_switch *ds, int port, int regnum);
255 int (*phy_write)(struct dsa_switch *ds, int port,
256 int regnum, u16 val);
259 * Link state adjustment (called from libphy)
261 void (*adjust_link)(struct dsa_switch *ds, int port,
262 struct phy_device *phydev);
263 void (*fixed_link_update)(struct dsa_switch *ds, int port,
264 struct fixed_phy_status *st);
267 * ethtool hardware statistics.
269 void (*get_strings)(struct dsa_switch *ds, int port, uint8_t *data);
270 void (*get_ethtool_stats)(struct dsa_switch *ds,
271 int port, uint64_t *data);
272 int (*get_sset_count)(struct dsa_switch *ds);
275 * ethtool Wake-on-LAN
277 void (*get_wol)(struct dsa_switch *ds, int port,
278 struct ethtool_wolinfo *w);
279 int (*set_wol)(struct dsa_switch *ds, int port,
280 struct ethtool_wolinfo *w);
285 int (*suspend)(struct dsa_switch *ds);
286 int (*resume)(struct dsa_switch *ds);
289 * Port enable/disable
291 int (*port_enable)(struct dsa_switch *ds, int port,
292 struct phy_device *phy);
293 void (*port_disable)(struct dsa_switch *ds, int port,
294 struct phy_device *phy);
299 int (*set_eee)(struct dsa_switch *ds, int port,
300 struct phy_device *phydev,
301 struct ethtool_eee *e);
302 int (*get_eee)(struct dsa_switch *ds, int port,
303 struct ethtool_eee *e);
305 #ifdef CONFIG_NET_DSA_HWMON
306 /* Hardware monitoring */
307 int (*get_temp)(struct dsa_switch *ds, int *temp);
308 int (*get_temp_limit)(struct dsa_switch *ds, int *temp);
309 int (*set_temp_limit)(struct dsa_switch *ds, int temp);
310 int (*get_temp_alarm)(struct dsa_switch *ds, bool *alarm);
314 int (*get_eeprom_len)(struct dsa_switch *ds);
315 int (*get_eeprom)(struct dsa_switch *ds,
316 struct ethtool_eeprom *eeprom, u8 *data);
317 int (*set_eeprom)(struct dsa_switch *ds,
318 struct ethtool_eeprom *eeprom, u8 *data);
323 int (*get_regs_len)(struct dsa_switch *ds, int port);
324 void (*get_regs)(struct dsa_switch *ds, int port,
325 struct ethtool_regs *regs, void *p);
330 int (*port_bridge_join)(struct dsa_switch *ds, int port,
331 struct net_device *bridge);
332 void (*port_bridge_leave)(struct dsa_switch *ds, int port);
333 void (*port_stp_state_set)(struct dsa_switch *ds, int port,
339 int (*port_vlan_filtering)(struct dsa_switch *ds, int port,
340 bool vlan_filtering);
341 int (*port_vlan_prepare)(struct dsa_switch *ds, int port,
342 const struct switchdev_obj_port_vlan *vlan,
343 struct switchdev_trans *trans);
344 void (*port_vlan_add)(struct dsa_switch *ds, int port,
345 const struct switchdev_obj_port_vlan *vlan,
346 struct switchdev_trans *trans);
347 int (*port_vlan_del)(struct dsa_switch *ds, int port,
348 const struct switchdev_obj_port_vlan *vlan);
349 int (*port_vlan_dump)(struct dsa_switch *ds, int port,
350 struct switchdev_obj_port_vlan *vlan,
351 int (*cb)(struct switchdev_obj *obj));
354 * Forwarding database
356 int (*port_fdb_prepare)(struct dsa_switch *ds, int port,
357 const struct switchdev_obj_port_fdb *fdb,
358 struct switchdev_trans *trans);
359 void (*port_fdb_add)(struct dsa_switch *ds, int port,
360 const struct switchdev_obj_port_fdb *fdb,
361 struct switchdev_trans *trans);
362 int (*port_fdb_del)(struct dsa_switch *ds, int port,
363 const struct switchdev_obj_port_fdb *fdb);
364 int (*port_fdb_dump)(struct dsa_switch *ds, int port,
365 struct switchdev_obj_port_fdb *fdb,
366 int (*cb)(struct switchdev_obj *obj));
369 void register_switch_driver(struct dsa_switch_driver *type);
370 void unregister_switch_driver(struct dsa_switch_driver *type);
371 struct mii_bus *dsa_host_dev_to_mii_bus(struct device *dev);
373 static inline void *ds_to_priv(struct dsa_switch *ds)
378 static inline bool dsa_uses_tagged_protocol(struct dsa_switch_tree *dst)
380 return dst->rcv != NULL;
383 void dsa_unregister_switch(struct dsa_switch *ds);
384 int dsa_register_switch(struct dsa_switch *ds, struct device_node *np);