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 (with nr_chips elements) of which element [a]
62 * indicates which port on this switch should be used to
63 * send packets to that are destined for switch a. Can be
64 * NULL if there is only one switch chip.
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
{
89 * Configuration data for the platform device that owns
90 * this dsa switch tree instance.
92 struct dsa_platform_data
*pd
;
95 * Reference to network device to use, and which tagging
98 struct net_device
*master_netdev
;
99 int (*rcv
)(struct sk_buff
*skb
,
100 struct net_device
*dev
,
101 struct packet_type
*pt
,
102 struct net_device
*orig_dev
);
103 enum dsa_tag_protocol tag_protocol
;
106 * Original copy of the master netdev ethtool_ops
108 struct ethtool_ops master_ethtool_ops
;
111 * The switch and port to which the CPU is attached.
117 * Data for the individual switch chips.
119 struct dsa_switch
*ds
[DSA_MAX_SWITCHES
];
126 * Parent switch tree, and switch index.
128 struct dsa_switch_tree
*dst
;
132 * Give the switch driver somewhere to hang its private data
138 * Configuration data for this switch.
140 struct dsa_chip_data
*cd
;
143 * The used switch driver.
145 struct dsa_switch_driver
*drv
;
147 #ifdef CONFIG_NET_DSA_HWMON
149 * Hardware monitoring information
151 char hwmon_name
[IFNAMSIZ
+ 8];
152 struct device
*hwmon_dev
;
156 * Slave mii_bus and devices for the individual ports.
159 u32 enabled_port_mask
;
161 struct mii_bus
*slave_mii_bus
;
162 struct net_device
*ports
[DSA_MAX_PORTS
];
165 static inline bool dsa_is_cpu_port(struct dsa_switch
*ds
, int p
)
167 return !!(ds
->index
== ds
->dst
->cpu_switch
&& p
== ds
->dst
->cpu_port
);
170 static inline bool dsa_is_dsa_port(struct dsa_switch
*ds
, int p
)
172 return !!((ds
->dsa_port_mask
) & (1 << p
));
175 static inline bool dsa_is_port_initialized(struct dsa_switch
*ds
, int p
)
177 return ds
->enabled_port_mask
& (1 << p
) && ds
->ports
[p
];
180 static inline u8
dsa_upstream_port(struct dsa_switch
*ds
)
182 struct dsa_switch_tree
*dst
= ds
->dst
;
185 * If this is the root switch (i.e. the switch that connects
186 * to the CPU), return the cpu port number on this switch.
187 * Else return the (DSA) port number that connects to the
188 * switch that is one hop closer to the cpu.
190 if (dst
->cpu_switch
== ds
->index
)
191 return dst
->cpu_port
;
193 return ds
->cd
->rtable
[dst
->cpu_switch
];
196 struct switchdev_trans
;
197 struct switchdev_obj
;
198 struct switchdev_obj_port_fdb
;
199 struct switchdev_obj_port_vlan
;
201 struct dsa_switch_driver
{
202 struct list_head list
;
204 enum dsa_tag_protocol tag_protocol
;
209 const char *(*probe
)(struct device
*dsa_dev
,
210 struct device
*host_dev
, int sw_addr
,
212 int (*setup
)(struct dsa_switch
*ds
);
213 int (*set_addr
)(struct dsa_switch
*ds
, u8
*addr
);
214 u32 (*get_phy_flags
)(struct dsa_switch
*ds
, int port
);
217 * Access to the switch's PHY registers.
219 int (*phy_read
)(struct dsa_switch
*ds
, int port
, int regnum
);
220 int (*phy_write
)(struct dsa_switch
*ds
, int port
,
221 int regnum
, u16 val
);
224 * Link state adjustment (called from libphy)
226 void (*adjust_link
)(struct dsa_switch
*ds
, int port
,
227 struct phy_device
*phydev
);
228 void (*fixed_link_update
)(struct dsa_switch
*ds
, int port
,
229 struct fixed_phy_status
*st
);
232 * ethtool hardware statistics.
234 void (*get_strings
)(struct dsa_switch
*ds
, int port
, uint8_t *data
);
235 void (*get_ethtool_stats
)(struct dsa_switch
*ds
,
236 int port
, uint64_t *data
);
237 int (*get_sset_count
)(struct dsa_switch
*ds
);
240 * ethtool Wake-on-LAN
242 void (*get_wol
)(struct dsa_switch
*ds
, int port
,
243 struct ethtool_wolinfo
*w
);
244 int (*set_wol
)(struct dsa_switch
*ds
, int port
,
245 struct ethtool_wolinfo
*w
);
250 int (*suspend
)(struct dsa_switch
*ds
);
251 int (*resume
)(struct dsa_switch
*ds
);
254 * Port enable/disable
256 int (*port_enable
)(struct dsa_switch
*ds
, int port
,
257 struct phy_device
*phy
);
258 void (*port_disable
)(struct dsa_switch
*ds
, int port
,
259 struct phy_device
*phy
);
264 int (*set_eee
)(struct dsa_switch
*ds
, int port
,
265 struct phy_device
*phydev
,
266 struct ethtool_eee
*e
);
267 int (*get_eee
)(struct dsa_switch
*ds
, int port
,
268 struct ethtool_eee
*e
);
270 #ifdef CONFIG_NET_DSA_HWMON
271 /* Hardware monitoring */
272 int (*get_temp
)(struct dsa_switch
*ds
, int *temp
);
273 int (*get_temp_limit
)(struct dsa_switch
*ds
, int *temp
);
274 int (*set_temp_limit
)(struct dsa_switch
*ds
, int temp
);
275 int (*get_temp_alarm
)(struct dsa_switch
*ds
, bool *alarm
);
279 int (*get_eeprom_len
)(struct dsa_switch
*ds
);
280 int (*get_eeprom
)(struct dsa_switch
*ds
,
281 struct ethtool_eeprom
*eeprom
, u8
*data
);
282 int (*set_eeprom
)(struct dsa_switch
*ds
,
283 struct ethtool_eeprom
*eeprom
, u8
*data
);
288 int (*get_regs_len
)(struct dsa_switch
*ds
, int port
);
289 void (*get_regs
)(struct dsa_switch
*ds
, int port
,
290 struct ethtool_regs
*regs
, void *p
);
295 int (*port_bridge_join
)(struct dsa_switch
*ds
, int port
,
296 struct net_device
*bridge
);
297 void (*port_bridge_leave
)(struct dsa_switch
*ds
, int port
);
298 void (*port_stp_state_set
)(struct dsa_switch
*ds
, int port
,
304 int (*port_vlan_filtering
)(struct dsa_switch
*ds
, int port
,
305 bool vlan_filtering
);
306 int (*port_vlan_prepare
)(struct dsa_switch
*ds
, int port
,
307 const struct switchdev_obj_port_vlan
*vlan
,
308 struct switchdev_trans
*trans
);
309 void (*port_vlan_add
)(struct dsa_switch
*ds
, int port
,
310 const struct switchdev_obj_port_vlan
*vlan
,
311 struct switchdev_trans
*trans
);
312 int (*port_vlan_del
)(struct dsa_switch
*ds
, int port
,
313 const struct switchdev_obj_port_vlan
*vlan
);
314 int (*port_vlan_dump
)(struct dsa_switch
*ds
, int port
,
315 struct switchdev_obj_port_vlan
*vlan
,
316 int (*cb
)(struct switchdev_obj
*obj
));
319 * Forwarding database
321 int (*port_fdb_prepare
)(struct dsa_switch
*ds
, int port
,
322 const struct switchdev_obj_port_fdb
*fdb
,
323 struct switchdev_trans
*trans
);
324 void (*port_fdb_add
)(struct dsa_switch
*ds
, int port
,
325 const struct switchdev_obj_port_fdb
*fdb
,
326 struct switchdev_trans
*trans
);
327 int (*port_fdb_del
)(struct dsa_switch
*ds
, int port
,
328 const struct switchdev_obj_port_fdb
*fdb
);
329 int (*port_fdb_dump
)(struct dsa_switch
*ds
, int port
,
330 struct switchdev_obj_port_fdb
*fdb
,
331 int (*cb
)(struct switchdev_obj
*obj
));
334 void register_switch_driver(struct dsa_switch_driver
*type
);
335 void unregister_switch_driver(struct dsa_switch_driver
*type
);
336 struct mii_bus
*dsa_host_dev_to_mii_bus(struct device
*dev
);
338 static inline void *ds_to_priv(struct dsa_switch
*ds
)
343 static inline bool dsa_uses_tagged_protocol(struct dsa_switch_tree
*dst
)
345 return dst
->rcv
!= NULL
;