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
,
30 DSA_TAG_LAST
, /* MUST BE LAST */
33 #define DSA_MAX_SWITCHES 4
34 #define DSA_MAX_PORTS 12
36 #define DSA_RTABLE_NONE -1
38 struct dsa_chip_data
{
40 * How to access the switch configuration registers.
42 struct device
*host_dev
;
45 /* set to size of eeprom if supported by the switch */
48 /* Device tree node pointer for this specific switch chip
49 * used during switch setup in case additional properties
50 * and resources needs to be used
52 struct device_node
*of_node
;
55 * The names of the switch's ports. Use "cpu" to
56 * designate the switch port that the cpu is connected to,
57 * "dsa" to indicate that this port is a DSA link to
58 * another switch, NULL to indicate the port is unused,
59 * or any other string to indicate this is a physical port.
61 char *port_names
[DSA_MAX_PORTS
];
62 struct device_node
*port_dn
[DSA_MAX_PORTS
];
65 * An array of which element [a] indicates which port on this
66 * switch should be used to send packets to that are destined
67 * for switch a. Can be NULL if there is only one switch chip.
69 s8 rtable
[DSA_MAX_SWITCHES
];
72 struct dsa_platform_data
{
74 * Reference to a Linux network interface that connects
75 * to the root switch chip of the tree.
77 struct device
*netdev
;
78 struct net_device
*of_netdev
;
81 * Info structs describing each of the switch chips
82 * connected via this network interface.
85 struct dsa_chip_data
*chip
;
90 struct dsa_switch_tree
{
91 struct list_head list
;
96 /* Number of switches attached to this tree */
99 /* Has this tree been applied to the hardware? */
103 * Configuration data for the platform device that owns
104 * this dsa switch tree instance.
106 struct dsa_platform_data
*pd
;
109 * Reference to network device to use, and which tagging
112 struct net_device
*master_netdev
;
113 int (*rcv
)(struct sk_buff
*skb
,
114 struct net_device
*dev
,
115 struct packet_type
*pt
,
116 struct net_device
*orig_dev
);
119 * Original copy of the master netdev ethtool_ops
121 struct ethtool_ops master_ethtool_ops
;
122 const struct ethtool_ops
*master_orig_ethtool_ops
;
125 * The switch and port to which the CPU is attached.
131 * Data for the individual switch chips.
133 struct dsa_switch
*ds
[DSA_MAX_SWITCHES
];
136 * Tagging protocol operations for adding and removing an
139 const struct dsa_device_ops
*tag_ops
;
143 struct net_device
*netdev
;
144 struct device_node
*dn
;
145 unsigned int ageing_time
;
153 * Parent switch tree, and switch index.
155 struct dsa_switch_tree
*dst
;
159 * Give the switch driver somewhere to hang its private data
165 * Configuration data for this switch.
167 struct dsa_chip_data
*cd
;
170 * The switch operations.
172 struct dsa_switch_ops
*ops
;
175 * An array of which element [a] indicates which port on this
176 * switch should be used to send packets to that are destined
177 * for switch a. Can be NULL if there is only one switch chip.
179 s8 rtable
[DSA_MAX_SWITCHES
];
181 #ifdef CONFIG_NET_DSA_HWMON
183 * Hardware monitoring information
185 char hwmon_name
[IFNAMSIZ
+ 8];
186 struct device
*hwmon_dev
;
190 * The lower device this switch uses to talk to the host
192 struct net_device
*master_netdev
;
195 * Slave mii_bus and devices for the individual ports.
199 u32 enabled_port_mask
;
201 struct dsa_port ports
[DSA_MAX_PORTS
];
202 struct mii_bus
*slave_mii_bus
;
205 static inline bool dsa_is_cpu_port(struct dsa_switch
*ds
, int p
)
207 return !!(ds
->index
== ds
->dst
->cpu_switch
&& p
== ds
->dst
->cpu_port
);
210 static inline bool dsa_is_dsa_port(struct dsa_switch
*ds
, int p
)
212 return !!((ds
->dsa_port_mask
) & (1 << p
));
215 static inline bool dsa_is_port_initialized(struct dsa_switch
*ds
, int p
)
217 return ds
->enabled_port_mask
& (1 << p
) && ds
->ports
[p
].netdev
;
220 static inline u8
dsa_upstream_port(struct dsa_switch
*ds
)
222 struct dsa_switch_tree
*dst
= ds
->dst
;
225 * If this is the root switch (i.e. the switch that connects
226 * to the CPU), return the cpu port number on this switch.
227 * Else return the (DSA) port number that connects to the
228 * switch that is one hop closer to the cpu.
230 if (dst
->cpu_switch
== ds
->index
)
231 return dst
->cpu_port
;
233 return ds
->rtable
[dst
->cpu_switch
];
236 struct switchdev_trans
;
237 struct switchdev_obj
;
238 struct switchdev_obj_port_fdb
;
239 struct switchdev_obj_port_mdb
;
240 struct switchdev_obj_port_vlan
;
242 struct dsa_switch_ops
{
243 struct list_head list
;
248 const char *(*probe
)(struct device
*dsa_dev
,
249 struct device
*host_dev
, int sw_addr
,
252 enum dsa_tag_protocol (*get_tag_protocol
)(struct dsa_switch
*ds
);
254 int (*setup
)(struct dsa_switch
*ds
);
255 int (*set_addr
)(struct dsa_switch
*ds
, u8
*addr
);
256 u32 (*get_phy_flags
)(struct dsa_switch
*ds
, int port
);
259 * Access to the switch's PHY registers.
261 int (*phy_read
)(struct dsa_switch
*ds
, int port
, int regnum
);
262 int (*phy_write
)(struct dsa_switch
*ds
, int port
,
263 int regnum
, u16 val
);
266 * Link state adjustment (called from libphy)
268 void (*adjust_link
)(struct dsa_switch
*ds
, int port
,
269 struct phy_device
*phydev
);
270 void (*fixed_link_update
)(struct dsa_switch
*ds
, int port
,
271 struct fixed_phy_status
*st
);
274 * ethtool hardware statistics.
276 void (*get_strings
)(struct dsa_switch
*ds
, int port
, uint8_t *data
);
277 void (*get_ethtool_stats
)(struct dsa_switch
*ds
,
278 int port
, uint64_t *data
);
279 int (*get_sset_count
)(struct dsa_switch
*ds
);
282 * ethtool Wake-on-LAN
284 void (*get_wol
)(struct dsa_switch
*ds
, int port
,
285 struct ethtool_wolinfo
*w
);
286 int (*set_wol
)(struct dsa_switch
*ds
, int port
,
287 struct ethtool_wolinfo
*w
);
292 int (*suspend
)(struct dsa_switch
*ds
);
293 int (*resume
)(struct dsa_switch
*ds
);
296 * Port enable/disable
298 int (*port_enable
)(struct dsa_switch
*ds
, int port
,
299 struct phy_device
*phy
);
300 void (*port_disable
)(struct dsa_switch
*ds
, int port
,
301 struct phy_device
*phy
);
306 int (*set_eee
)(struct dsa_switch
*ds
, int port
,
307 struct phy_device
*phydev
,
308 struct ethtool_eee
*e
);
309 int (*get_eee
)(struct dsa_switch
*ds
, int port
,
310 struct ethtool_eee
*e
);
312 #ifdef CONFIG_NET_DSA_HWMON
313 /* Hardware monitoring */
314 int (*get_temp
)(struct dsa_switch
*ds
, int *temp
);
315 int (*get_temp_limit
)(struct dsa_switch
*ds
, int *temp
);
316 int (*set_temp_limit
)(struct dsa_switch
*ds
, int temp
);
317 int (*get_temp_alarm
)(struct dsa_switch
*ds
, bool *alarm
);
321 int (*get_eeprom_len
)(struct dsa_switch
*ds
);
322 int (*get_eeprom
)(struct dsa_switch
*ds
,
323 struct ethtool_eeprom
*eeprom
, u8
*data
);
324 int (*set_eeprom
)(struct dsa_switch
*ds
,
325 struct ethtool_eeprom
*eeprom
, u8
*data
);
330 int (*get_regs_len
)(struct dsa_switch
*ds
, int port
);
331 void (*get_regs
)(struct dsa_switch
*ds
, int port
,
332 struct ethtool_regs
*regs
, void *p
);
337 int (*set_ageing_time
)(struct dsa_switch
*ds
, unsigned int msecs
);
338 int (*port_bridge_join
)(struct dsa_switch
*ds
, int port
,
339 struct net_device
*bridge
);
340 void (*port_bridge_leave
)(struct dsa_switch
*ds
, int port
);
341 void (*port_stp_state_set
)(struct dsa_switch
*ds
, int port
,
343 void (*port_fast_age
)(struct dsa_switch
*ds
, int port
);
348 int (*port_vlan_filtering
)(struct dsa_switch
*ds
, int port
,
349 bool vlan_filtering
);
350 int (*port_vlan_prepare
)(struct dsa_switch
*ds
, int port
,
351 const struct switchdev_obj_port_vlan
*vlan
,
352 struct switchdev_trans
*trans
);
353 void (*port_vlan_add
)(struct dsa_switch
*ds
, int port
,
354 const struct switchdev_obj_port_vlan
*vlan
,
355 struct switchdev_trans
*trans
);
356 int (*port_vlan_del
)(struct dsa_switch
*ds
, int port
,
357 const struct switchdev_obj_port_vlan
*vlan
);
358 int (*port_vlan_dump
)(struct dsa_switch
*ds
, int port
,
359 struct switchdev_obj_port_vlan
*vlan
,
360 int (*cb
)(struct switchdev_obj
*obj
));
363 * Forwarding database
365 int (*port_fdb_prepare
)(struct dsa_switch
*ds
, int port
,
366 const struct switchdev_obj_port_fdb
*fdb
,
367 struct switchdev_trans
*trans
);
368 void (*port_fdb_add
)(struct dsa_switch
*ds
, int port
,
369 const struct switchdev_obj_port_fdb
*fdb
,
370 struct switchdev_trans
*trans
);
371 int (*port_fdb_del
)(struct dsa_switch
*ds
, int port
,
372 const struct switchdev_obj_port_fdb
*fdb
);
373 int (*port_fdb_dump
)(struct dsa_switch
*ds
, int port
,
374 struct switchdev_obj_port_fdb
*fdb
,
375 int (*cb
)(struct switchdev_obj
*obj
));
380 int (*port_mdb_prepare
)(struct dsa_switch
*ds
, int port
,
381 const struct switchdev_obj_port_mdb
*mdb
,
382 struct switchdev_trans
*trans
);
383 void (*port_mdb_add
)(struct dsa_switch
*ds
, int port
,
384 const struct switchdev_obj_port_mdb
*mdb
,
385 struct switchdev_trans
*trans
);
386 int (*port_mdb_del
)(struct dsa_switch
*ds
, int port
,
387 const struct switchdev_obj_port_mdb
*mdb
);
388 int (*port_mdb_dump
)(struct dsa_switch
*ds
, int port
,
389 struct switchdev_obj_port_mdb
*mdb
,
390 int (*cb
)(struct switchdev_obj
*obj
));
393 void register_switch_driver(struct dsa_switch_ops
*type
);
394 void unregister_switch_driver(struct dsa_switch_ops
*type
);
395 struct mii_bus
*dsa_host_dev_to_mii_bus(struct device
*dev
);
397 static inline bool dsa_uses_tagged_protocol(struct dsa_switch_tree
*dst
)
399 return dst
->rcv
!= NULL
;
402 void dsa_unregister_switch(struct dsa_switch
*ds
);
403 int dsa_register_switch(struct dsa_switch
*ds
, struct device_node
*np
);
404 #ifdef CONFIG_PM_SLEEP
405 int dsa_switch_suspend(struct dsa_switch
*ds
);
406 int dsa_switch_resume(struct dsa_switch
*ds
);
408 static inline int dsa_switch_suspend(struct dsa_switch
*ds
)
412 static inline int dsa_switch_resume(struct dsa_switch
*ds
)
416 #endif /* CONFIG_PM_SLEEP */