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,
31 #define DSA_MAX_SWITCHES 4
32 #define DSA_MAX_PORTS 12
34 struct dsa_chip_data {
36 * How to access the switch configuration registers.
38 struct device *host_dev;
41 /* set to size of eeprom if supported by the switch */
44 /* Device tree node pointer for this specific switch chip
45 * used during switch setup in case additional properties
46 * and resources needs to be used
48 struct device_node *of_node;
51 * The names of the switch's ports. Use "cpu" to
52 * designate the switch port that the cpu is connected to,
53 * "dsa" to indicate that this port is a DSA link to
54 * another switch, NULL to indicate the port is unused,
55 * or any other string to indicate this is a physical port.
57 char *port_names[DSA_MAX_PORTS];
58 struct device_node *port_dn[DSA_MAX_PORTS];
61 * An array of which element [a] indicates which port on this
62 * switch should be used to send packets to that are destined
63 * for switch a. Can be NULL if there is only one switch chip.
65 s8 rtable[DSA_MAX_SWITCHES];
68 struct dsa_platform_data {
70 * Reference to a Linux network interface that connects
71 * to the root switch chip of the tree.
73 struct device *netdev;
74 struct net_device *of_netdev;
77 * Info structs describing each of the switch chips
78 * connected via this network interface.
81 struct dsa_chip_data *chip;
86 struct dsa_switch_tree {
88 * Configuration data for the platform device that owns
89 * this dsa switch tree instance.
91 struct dsa_platform_data *pd;
94 * Reference to network device to use, and which tagging
97 struct net_device *master_netdev;
98 int (*rcv)(struct sk_buff *skb,
99 struct net_device *dev,
100 struct packet_type *pt,
101 struct net_device *orig_dev);
102 enum dsa_tag_protocol tag_protocol;
105 * Original copy of the master netdev ethtool_ops
107 struct ethtool_ops master_ethtool_ops;
110 * The switch and port to which the CPU is attached.
116 * Data for the individual switch chips.
118 struct dsa_switch *ds[DSA_MAX_SWITCHES];
122 struct net_device *netdev;
123 struct device_node *dn;
130 * Parent switch tree, and switch index.
132 struct dsa_switch_tree *dst;
136 * Give the switch driver somewhere to hang its private data
142 * Configuration data for this switch.
144 struct dsa_chip_data *cd;
147 * The used switch driver.
149 struct dsa_switch_driver *drv;
152 * An array of which element [a] indicates which port on this
153 * switch should be used to send packets to that are destined
154 * for switch a. Can be NULL if there is only one switch chip.
156 s8 rtable[DSA_MAX_SWITCHES];
158 #ifdef CONFIG_NET_DSA_HWMON
160 * Hardware monitoring information
162 char hwmon_name[IFNAMSIZ + 8];
163 struct device *hwmon_dev;
167 * Slave mii_bus and devices for the individual ports.
170 u32 enabled_port_mask;
172 struct dsa_port ports[DSA_MAX_PORTS];
173 struct mii_bus *slave_mii_bus;
176 static inline bool dsa_is_cpu_port(struct dsa_switch *ds, int p)
178 return !!(ds->index == ds->dst->cpu_switch && p == ds->dst->cpu_port);
181 static inline bool dsa_is_dsa_port(struct dsa_switch *ds, int p)
183 return !!((ds->dsa_port_mask) & (1 << p));
186 static inline bool dsa_is_port_initialized(struct dsa_switch *ds, int p)
188 return ds->enabled_port_mask & (1 << p) && ds->ports[p].netdev;
191 static inline u8 dsa_upstream_port(struct dsa_switch *ds)
193 struct dsa_switch_tree *dst = ds->dst;
196 * If this is the root switch (i.e. the switch that connects
197 * to the CPU), return the cpu port number on this switch.
198 * Else return the (DSA) port number that connects to the
199 * switch that is one hop closer to the cpu.
201 if (dst->cpu_switch == ds->index)
202 return dst->cpu_port;
204 return ds->rtable[dst->cpu_switch];
207 struct switchdev_trans;
208 struct switchdev_obj;
209 struct switchdev_obj_port_fdb;
210 struct switchdev_obj_port_vlan;
212 struct dsa_switch_driver {
213 struct list_head list;
215 enum dsa_tag_protocol tag_protocol;
220 const char *(*probe)(struct device *dsa_dev,
221 struct device *host_dev, int sw_addr,
223 int (*setup)(struct dsa_switch *ds);
224 int (*set_addr)(struct dsa_switch *ds, u8 *addr);
225 u32 (*get_phy_flags)(struct dsa_switch *ds, int port);
228 * Access to the switch's PHY registers.
230 int (*phy_read)(struct dsa_switch *ds, int port, int regnum);
231 int (*phy_write)(struct dsa_switch *ds, int port,
232 int regnum, u16 val);
235 * Link state adjustment (called from libphy)
237 void (*adjust_link)(struct dsa_switch *ds, int port,
238 struct phy_device *phydev);
239 void (*fixed_link_update)(struct dsa_switch *ds, int port,
240 struct fixed_phy_status *st);
243 * ethtool hardware statistics.
245 void (*get_strings)(struct dsa_switch *ds, int port, uint8_t *data);
246 void (*get_ethtool_stats)(struct dsa_switch *ds,
247 int port, uint64_t *data);
248 int (*get_sset_count)(struct dsa_switch *ds);
251 * ethtool Wake-on-LAN
253 void (*get_wol)(struct dsa_switch *ds, int port,
254 struct ethtool_wolinfo *w);
255 int (*set_wol)(struct dsa_switch *ds, int port,
256 struct ethtool_wolinfo *w);
261 int (*suspend)(struct dsa_switch *ds);
262 int (*resume)(struct dsa_switch *ds);
265 * Port enable/disable
267 int (*port_enable)(struct dsa_switch *ds, int port,
268 struct phy_device *phy);
269 void (*port_disable)(struct dsa_switch *ds, int port,
270 struct phy_device *phy);
275 int (*set_eee)(struct dsa_switch *ds, int port,
276 struct phy_device *phydev,
277 struct ethtool_eee *e);
278 int (*get_eee)(struct dsa_switch *ds, int port,
279 struct ethtool_eee *e);
281 #ifdef CONFIG_NET_DSA_HWMON
282 /* Hardware monitoring */
283 int (*get_temp)(struct dsa_switch *ds, int *temp);
284 int (*get_temp_limit)(struct dsa_switch *ds, int *temp);
285 int (*set_temp_limit)(struct dsa_switch *ds, int temp);
286 int (*get_temp_alarm)(struct dsa_switch *ds, bool *alarm);
290 int (*get_eeprom_len)(struct dsa_switch *ds);
291 int (*get_eeprom)(struct dsa_switch *ds,
292 struct ethtool_eeprom *eeprom, u8 *data);
293 int (*set_eeprom)(struct dsa_switch *ds,
294 struct ethtool_eeprom *eeprom, u8 *data);
299 int (*get_regs_len)(struct dsa_switch *ds, int port);
300 void (*get_regs)(struct dsa_switch *ds, int port,
301 struct ethtool_regs *regs, void *p);
306 int (*port_bridge_join)(struct dsa_switch *ds, int port,
307 struct net_device *bridge);
308 void (*port_bridge_leave)(struct dsa_switch *ds, int port);
309 void (*port_stp_state_set)(struct dsa_switch *ds, int port,
315 int (*port_vlan_filtering)(struct dsa_switch *ds, int port,
316 bool vlan_filtering);
317 int (*port_vlan_prepare)(struct dsa_switch *ds, int port,
318 const struct switchdev_obj_port_vlan *vlan,
319 struct switchdev_trans *trans);
320 void (*port_vlan_add)(struct dsa_switch *ds, int port,
321 const struct switchdev_obj_port_vlan *vlan,
322 struct switchdev_trans *trans);
323 int (*port_vlan_del)(struct dsa_switch *ds, int port,
324 const struct switchdev_obj_port_vlan *vlan);
325 int (*port_vlan_dump)(struct dsa_switch *ds, int port,
326 struct switchdev_obj_port_vlan *vlan,
327 int (*cb)(struct switchdev_obj *obj));
330 * Forwarding database
332 int (*port_fdb_prepare)(struct dsa_switch *ds, int port,
333 const struct switchdev_obj_port_fdb *fdb,
334 struct switchdev_trans *trans);
335 void (*port_fdb_add)(struct dsa_switch *ds, int port,
336 const struct switchdev_obj_port_fdb *fdb,
337 struct switchdev_trans *trans);
338 int (*port_fdb_del)(struct dsa_switch *ds, int port,
339 const struct switchdev_obj_port_fdb *fdb);
340 int (*port_fdb_dump)(struct dsa_switch *ds, int port,
341 struct switchdev_obj_port_fdb *fdb,
342 int (*cb)(struct switchdev_obj *obj));
345 void register_switch_driver(struct dsa_switch_driver *type);
346 void unregister_switch_driver(struct dsa_switch_driver *type);
347 struct mii_bus *dsa_host_dev_to_mii_bus(struct device *dev);
349 static inline void *ds_to_priv(struct dsa_switch *ds)
354 static inline bool dsa_uses_tagged_protocol(struct dsa_switch_tree *dst)
356 return dst->rcv != NULL;