Merge remote-tracking branch 'selinux/next'
[deliverable/linux.git] / include / net / dsa.h
CommitLineData
91da11f8
LB
1/*
2 * include/net/dsa.h - Driver for Distributed Switch Architecture switch chips
e84665c9 3 * Copyright (c) 2008-2009 Marvell Semiconductor
91da11f8
LB
4 *
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.
9 */
10
11#ifndef __LINUX_NET_DSA_H
12#define __LINUX_NET_DSA_H
13
ea1f51be 14#include <linux/if_ether.h>
c8f0b869 15#include <linux/list.h>
cf50dcc2
BH
16#include <linux/timer.h>
17#include <linux/workqueue.h>
fa981d9a 18#include <linux/of.h>
ec9436ba 19#include <linux/phy.h>
ce31b31c 20#include <linux/phy_fixed.h>
a2820543 21#include <linux/ethtool.h>
cf50dcc2 22
ac7a04c3
FF
23enum dsa_tag_protocol {
24 DSA_TAG_PROTO_NONE = 0,
25 DSA_TAG_PROTO_DSA,
26 DSA_TAG_PROTO_TRAILER,
27 DSA_TAG_PROTO_EDSA,
28 DSA_TAG_PROTO_BRCM,
39a7f2a4 29 DSA_TAG_LAST, /* MUST BE LAST */
ac7a04c3 30};
5037d532 31
e84665c9
LB
32#define DSA_MAX_SWITCHES 4
33#define DSA_MAX_PORTS 12
34
d390238c
VD
35#define DSA_RTABLE_NONE -1
36
e84665c9
LB
37struct dsa_chip_data {
38 /*
39 * How to access the switch configuration registers.
40 */
b4d2394d 41 struct device *host_dev;
e84665c9
LB
42 int sw_addr;
43
6793abb4
GR
44 /* set to size of eeprom if supported by the switch */
45 int eeprom_len;
46
fa981d9a
FF
47 /* Device tree node pointer for this specific switch chip
48 * used during switch setup in case additional properties
49 * and resources needs to be used
50 */
51 struct device_node *of_node;
52
e84665c9
LB
53 /*
54 * The names of the switch's ports. Use "cpu" to
55 * designate the switch port that the cpu is connected to,
56 * "dsa" to indicate that this port is a DSA link to
57 * another switch, NULL to indicate the port is unused,
58 * or any other string to indicate this is a physical port.
59 */
60 char *port_names[DSA_MAX_PORTS];
bd47497a 61 struct device_node *port_dn[DSA_MAX_PORTS];
e84665c9
LB
62
63 /*
4a7704ff
AL
64 * An array of which element [a] indicates which port on this
65 * switch should be used to send packets to that are destined
66 * for switch a. Can be NULL if there is only one switch chip.
e84665c9 67 */
4a7704ff 68 s8 rtable[DSA_MAX_SWITCHES];
e84665c9 69};
91da11f8
LB
70
71struct dsa_platform_data {
72 /*
73 * Reference to a Linux network interface that connects
e84665c9 74 * to the root switch chip of the tree.
91da11f8
LB
75 */
76 struct device *netdev;
769a0202 77 struct net_device *of_netdev;
91da11f8
LB
78
79 /*
e84665c9
LB
80 * Info structs describing each of the switch chips
81 * connected via this network interface.
91da11f8 82 */
e84665c9
LB
83 int nr_chips;
84 struct dsa_chip_data *chip;
91da11f8
LB
85};
86
5075314e 87struct packet_type;
3e8a72d1 88
cf50dcc2 89struct dsa_switch_tree {
83c0afae
AL
90 struct list_head list;
91
92 /* Tree identifier */
93 u32 tree;
94
95 /* Number of switches attached to this tree */
96 struct kref refcount;
97
98 /* Has this tree been applied to the hardware? */
99 bool applied;
100
cf50dcc2
BH
101 /*
102 * Configuration data for the platform device that owns
103 * this dsa switch tree instance.
104 */
105 struct dsa_platform_data *pd;
106
107 /*
108 * Reference to network device to use, and which tagging
109 * protocol to use.
110 */
111 struct net_device *master_netdev;
5075314e
AD
112 int (*rcv)(struct sk_buff *skb,
113 struct net_device *dev,
114 struct packet_type *pt,
115 struct net_device *orig_dev);
cf50dcc2 116
badf3ada
FF
117 /*
118 * Original copy of the master netdev ethtool_ops
119 */
120 struct ethtool_ops master_ethtool_ops;
0c73c523 121 const struct ethtool_ops *master_orig_ethtool_ops;
badf3ada 122
cf50dcc2
BH
123 /*
124 * The switch and port to which the CPU is attached.
125 */
126 s8 cpu_switch;
127 s8 cpu_port;
128
cf50dcc2
BH
129 /*
130 * Data for the individual switch chips.
131 */
132 struct dsa_switch *ds[DSA_MAX_SWITCHES];
39a7f2a4
AL
133
134 /*
135 * Tagging protocol operations for adding and removing an
136 * encapsulation tag.
137 */
138 const struct dsa_device_ops *tag_ops;
cf50dcc2
BH
139};
140
c8b09808
AL
141struct dsa_port {
142 struct net_device *netdev;
189b0d93 143 struct device_node *dn;
34a79f63 144 unsigned int ageing_time;
c8b09808
AL
145};
146
c8f0b869 147struct dsa_switch {
c33063d6
AL
148 struct device *dev;
149
c8f0b869
BH
150 /*
151 * Parent switch tree, and switch index.
152 */
153 struct dsa_switch_tree *dst;
154 int index;
155
7543a6d5
AL
156 /*
157 * Give the switch driver somewhere to hang its private data
158 * structure.
159 */
160 void *priv;
161
c8f0b869
BH
162 /*
163 * Configuration data for this switch.
164 */
ff04955c 165 struct dsa_chip_data *cd;
c8f0b869
BH
166
167 /*
9d490b4e 168 * The switch operations.
c8f0b869 169 */
9d490b4e 170 struct dsa_switch_ops *ops;
c8f0b869 171
66472fc0
AL
172 /*
173 * An array of which element [a] indicates which port on this
174 * switch should be used to send packets to that are destined
175 * for switch a. Can be NULL if there is only one switch chip.
176 */
177 s8 rtable[DSA_MAX_SWITCHES];
178
51579c3f
GR
179#ifdef CONFIG_NET_DSA_HWMON
180 /*
181 * Hardware monitoring information
182 */
183 char hwmon_name[IFNAMSIZ + 8];
184 struct device *hwmon_dev;
185#endif
186
83c0afae
AL
187 /*
188 * The lower device this switch uses to talk to the host
189 */
190 struct net_device *master_netdev;
191
c8f0b869
BH
192 /*
193 * Slave mii_bus and devices for the individual ports.
194 */
195 u32 dsa_port_mask;
83c0afae 196 u32 cpu_port_mask;
74c3e2a5 197 u32 enabled_port_mask;
0d8bcdd3 198 u32 phys_mii_mask;
c8b09808 199 struct dsa_port ports[DSA_MAX_PORTS];
c8f0b869 200 struct mii_bus *slave_mii_bus;
c8f0b869
BH
201};
202
203static inline bool dsa_is_cpu_port(struct dsa_switch *ds, int p)
204{
205 return !!(ds->index == ds->dst->cpu_switch && p == ds->dst->cpu_port);
206}
207
60045cbf
AL
208static inline bool dsa_is_dsa_port(struct dsa_switch *ds, int p)
209{
210 return !!((ds->dsa_port_mask) & (1 << p));
211}
212
d79d2107
GR
213static inline bool dsa_is_port_initialized(struct dsa_switch *ds, int p)
214{
c8b09808 215 return ds->enabled_port_mask & (1 << p) && ds->ports[p].netdev;
d79d2107
GR
216}
217
c8f0b869
BH
218static inline u8 dsa_upstream_port(struct dsa_switch *ds)
219{
220 struct dsa_switch_tree *dst = ds->dst;
221
222 /*
223 * If this is the root switch (i.e. the switch that connects
224 * to the CPU), return the cpu port number on this switch.
225 * Else return the (DSA) port number that connects to the
226 * switch that is one hop closer to the cpu.
227 */
228 if (dst->cpu_switch == ds->index)
229 return dst->cpu_port;
230 else
66472fc0 231 return ds->rtable[dst->cpu_switch];
c8f0b869
BH
232}
233
146a3206 234struct switchdev_trans;
ea70ba98 235struct switchdev_obj;
146a3206 236struct switchdev_obj_port_fdb;
8df30255 237struct switchdev_obj_port_mdb;
76e398a6 238struct switchdev_obj_port_vlan;
146a3206 239
9d490b4e 240struct dsa_switch_ops {
c8f0b869
BH
241 struct list_head list;
242
c8f0b869
BH
243 /*
244 * Probing and setup.
245 */
0209d144
VD
246 const char *(*probe)(struct device *dsa_dev,
247 struct device *host_dev, int sw_addr,
248 void **priv);
7b314362
AL
249
250 enum dsa_tag_protocol (*get_tag_protocol)(struct dsa_switch *ds);
251
c8f0b869
BH
252 int (*setup)(struct dsa_switch *ds);
253 int (*set_addr)(struct dsa_switch *ds, u8 *addr);
6819563e 254 u32 (*get_phy_flags)(struct dsa_switch *ds, int port);
c8f0b869
BH
255
256 /*
257 * Access to the switch's PHY registers.
258 */
259 int (*phy_read)(struct dsa_switch *ds, int port, int regnum);
260 int (*phy_write)(struct dsa_switch *ds, int port,
261 int regnum, u16 val);
262
ec9436ba
FF
263 /*
264 * Link state adjustment (called from libphy)
265 */
266 void (*adjust_link)(struct dsa_switch *ds, int port,
267 struct phy_device *phydev);
ce31b31c
FF
268 void (*fixed_link_update)(struct dsa_switch *ds, int port,
269 struct fixed_phy_status *st);
ec9436ba 270
c8f0b869
BH
271 /*
272 * ethtool hardware statistics.
273 */
274 void (*get_strings)(struct dsa_switch *ds, int port, uint8_t *data);
275 void (*get_ethtool_stats)(struct dsa_switch *ds,
276 int port, uint64_t *data);
277 int (*get_sset_count)(struct dsa_switch *ds);
24462549 278
19e57c4e
FF
279 /*
280 * ethtool Wake-on-LAN
281 */
282 void (*get_wol)(struct dsa_switch *ds, int port,
283 struct ethtool_wolinfo *w);
284 int (*set_wol)(struct dsa_switch *ds, int port,
285 struct ethtool_wolinfo *w);
286
24462549
FF
287 /*
288 * Suspend and resume
289 */
290 int (*suspend)(struct dsa_switch *ds);
291 int (*resume)(struct dsa_switch *ds);
b2f2af21
FF
292
293 /*
294 * Port enable/disable
295 */
296 int (*port_enable)(struct dsa_switch *ds, int port,
297 struct phy_device *phy);
298 void (*port_disable)(struct dsa_switch *ds, int port,
299 struct phy_device *phy);
7905288f
FF
300
301 /*
302 * EEE setttings
303 */
304 int (*set_eee)(struct dsa_switch *ds, int port,
305 struct phy_device *phydev,
306 struct ethtool_eee *e);
307 int (*get_eee)(struct dsa_switch *ds, int port,
308 struct ethtool_eee *e);
51579c3f
GR
309
310#ifdef CONFIG_NET_DSA_HWMON
311 /* Hardware monitoring */
312 int (*get_temp)(struct dsa_switch *ds, int *temp);
313 int (*get_temp_limit)(struct dsa_switch *ds, int *temp);
314 int (*set_temp_limit)(struct dsa_switch *ds, int temp);
315 int (*get_temp_alarm)(struct dsa_switch *ds, bool *alarm);
316#endif
6793abb4
GR
317
318 /* EEPROM access */
319 int (*get_eeprom_len)(struct dsa_switch *ds);
320 int (*get_eeprom)(struct dsa_switch *ds,
321 struct ethtool_eeprom *eeprom, u8 *data);
322 int (*set_eeprom)(struct dsa_switch *ds,
323 struct ethtool_eeprom *eeprom, u8 *data);
3d762a0f
GR
324
325 /*
326 * Register access.
327 */
328 int (*get_regs_len)(struct dsa_switch *ds, int port);
329 void (*get_regs)(struct dsa_switch *ds, int port,
330 struct ethtool_regs *regs, void *p);
b73adef6
FF
331
332 /*
333 * Bridge integration
334 */
34a79f63 335 int (*set_ageing_time)(struct dsa_switch *ds, unsigned int msecs);
71327a4e 336 int (*port_bridge_join)(struct dsa_switch *ds, int port,
a6692754 337 struct net_device *bridge);
16bfa702 338 void (*port_bridge_leave)(struct dsa_switch *ds, int port);
43c44a9f
VD
339 void (*port_stp_state_set)(struct dsa_switch *ds, int port,
340 u8 state);
2a778e1b 341
11149536
VD
342 /*
343 * VLAN support
344 */
fb2dabad
VD
345 int (*port_vlan_filtering)(struct dsa_switch *ds, int port,
346 bool vlan_filtering);
76e398a6
VD
347 int (*port_vlan_prepare)(struct dsa_switch *ds, int port,
348 const struct switchdev_obj_port_vlan *vlan,
349 struct switchdev_trans *trans);
4d5770b3 350 void (*port_vlan_add)(struct dsa_switch *ds, int port,
76e398a6
VD
351 const struct switchdev_obj_port_vlan *vlan,
352 struct switchdev_trans *trans);
353 int (*port_vlan_del)(struct dsa_switch *ds, int port,
354 const struct switchdev_obj_port_vlan *vlan);
65aebfc0
VD
355 int (*port_vlan_dump)(struct dsa_switch *ds, int port,
356 struct switchdev_obj_port_vlan *vlan,
357 int (*cb)(struct switchdev_obj *obj));
11149536 358
2a778e1b
VD
359 /*
360 * Forwarding database
361 */
146a3206
VD
362 int (*port_fdb_prepare)(struct dsa_switch *ds, int port,
363 const struct switchdev_obj_port_fdb *fdb,
364 struct switchdev_trans *trans);
8497aa61 365 void (*port_fdb_add)(struct dsa_switch *ds, int port,
1f36faf2
VD
366 const struct switchdev_obj_port_fdb *fdb,
367 struct switchdev_trans *trans);
2a778e1b 368 int (*port_fdb_del)(struct dsa_switch *ds, int port,
8057b3e7 369 const struct switchdev_obj_port_fdb *fdb);
ea70ba98
VD
370 int (*port_fdb_dump)(struct dsa_switch *ds, int port,
371 struct switchdev_obj_port_fdb *fdb,
372 int (*cb)(struct switchdev_obj *obj));
8df30255
VD
373
374 /*
375 * Multicast database
376 */
377 int (*port_mdb_prepare)(struct dsa_switch *ds, int port,
378 const struct switchdev_obj_port_mdb *mdb,
379 struct switchdev_trans *trans);
380 void (*port_mdb_add)(struct dsa_switch *ds, int port,
381 const struct switchdev_obj_port_mdb *mdb,
382 struct switchdev_trans *trans);
383 int (*port_mdb_del)(struct dsa_switch *ds, int port,
384 const struct switchdev_obj_port_mdb *mdb);
385 int (*port_mdb_dump)(struct dsa_switch *ds, int port,
386 struct switchdev_obj_port_mdb *mdb,
387 int (*cb)(struct switchdev_obj *obj));
c8f0b869
BH
388};
389
9d490b4e
VD
390void register_switch_driver(struct dsa_switch_ops *type);
391void unregister_switch_driver(struct dsa_switch_ops *type);
b4d2394d 392struct mii_bus *dsa_host_dev_to_mii_bus(struct device *dev);
c8f0b869 393
5aed85ce
FF
394static inline bool dsa_uses_tagged_protocol(struct dsa_switch_tree *dst)
395{
5075314e 396 return dst->rcv != NULL;
5aed85ce 397}
83c0afae
AL
398
399void dsa_unregister_switch(struct dsa_switch *ds);
400int dsa_register_switch(struct dsa_switch *ds, struct device_node *np);
ea825e70
FF
401#ifdef CONFIG_PM_SLEEP
402int dsa_switch_suspend(struct dsa_switch *ds);
403int dsa_switch_resume(struct dsa_switch *ds);
404#else
405static inline int dsa_switch_suspend(struct dsa_switch *ds)
406{
407 return 0;
408}
409static inline int dsa_switch_resume(struct dsa_switch *ds)
410{
411 return 0;
412}
413#endif /* CONFIG_PM_SLEEP */
414
91da11f8 415#endif
This page took 1.865001 seconds and 5 git commands to generate.