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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 |
23 | enum 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, | |
cafdc45c | 29 | DSA_TAG_PROTO_QCA, |
39a7f2a4 | 30 | DSA_TAG_LAST, /* MUST BE LAST */ |
ac7a04c3 | 31 | }; |
5037d532 | 32 | |
e84665c9 LB |
33 | #define DSA_MAX_SWITCHES 4 |
34 | #define DSA_MAX_PORTS 12 | |
35 | ||
d390238c VD |
36 | #define DSA_RTABLE_NONE -1 |
37 | ||
e84665c9 LB |
38 | struct dsa_chip_data { |
39 | /* | |
40 | * How to access the switch configuration registers. | |
41 | */ | |
b4d2394d | 42 | struct device *host_dev; |
e84665c9 LB |
43 | int sw_addr; |
44 | ||
6793abb4 GR |
45 | /* set to size of eeprom if supported by the switch */ |
46 | int eeprom_len; | |
47 | ||
fa981d9a FF |
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 | |
51 | */ | |
52 | struct device_node *of_node; | |
53 | ||
e84665c9 LB |
54 | /* |
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. | |
60 | */ | |
61 | char *port_names[DSA_MAX_PORTS]; | |
bd47497a | 62 | struct device_node *port_dn[DSA_MAX_PORTS]; |
e84665c9 LB |
63 | |
64 | /* | |
4a7704ff AL |
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. | |
e84665c9 | 68 | */ |
4a7704ff | 69 | s8 rtable[DSA_MAX_SWITCHES]; |
e84665c9 | 70 | }; |
91da11f8 LB |
71 | |
72 | struct dsa_platform_data { | |
73 | /* | |
74 | * Reference to a Linux network interface that connects | |
e84665c9 | 75 | * to the root switch chip of the tree. |
91da11f8 LB |
76 | */ |
77 | struct device *netdev; | |
769a0202 | 78 | struct net_device *of_netdev; |
91da11f8 LB |
79 | |
80 | /* | |
e84665c9 LB |
81 | * Info structs describing each of the switch chips |
82 | * connected via this network interface. | |
91da11f8 | 83 | */ |
e84665c9 LB |
84 | int nr_chips; |
85 | struct dsa_chip_data *chip; | |
91da11f8 LB |
86 | }; |
87 | ||
5075314e | 88 | struct packet_type; |
3e8a72d1 | 89 | |
cf50dcc2 | 90 | struct dsa_switch_tree { |
83c0afae AL |
91 | struct list_head list; |
92 | ||
93 | /* Tree identifier */ | |
94 | u32 tree; | |
95 | ||
96 | /* Number of switches attached to this tree */ | |
97 | struct kref refcount; | |
98 | ||
99 | /* Has this tree been applied to the hardware? */ | |
100 | bool applied; | |
101 | ||
cf50dcc2 BH |
102 | /* |
103 | * Configuration data for the platform device that owns | |
104 | * this dsa switch tree instance. | |
105 | */ | |
106 | struct dsa_platform_data *pd; | |
107 | ||
108 | /* | |
109 | * Reference to network device to use, and which tagging | |
110 | * protocol to use. | |
111 | */ | |
112 | struct net_device *master_netdev; | |
5075314e AD |
113 | int (*rcv)(struct sk_buff *skb, |
114 | struct net_device *dev, | |
115 | struct packet_type *pt, | |
116 | struct net_device *orig_dev); | |
cf50dcc2 | 117 | |
badf3ada FF |
118 | /* |
119 | * Original copy of the master netdev ethtool_ops | |
120 | */ | |
121 | struct ethtool_ops master_ethtool_ops; | |
0c73c523 | 122 | const struct ethtool_ops *master_orig_ethtool_ops; |
badf3ada | 123 | |
cf50dcc2 BH |
124 | /* |
125 | * The switch and port to which the CPU is attached. | |
126 | */ | |
127 | s8 cpu_switch; | |
128 | s8 cpu_port; | |
129 | ||
cf50dcc2 BH |
130 | /* |
131 | * Data for the individual switch chips. | |
132 | */ | |
133 | struct dsa_switch *ds[DSA_MAX_SWITCHES]; | |
39a7f2a4 AL |
134 | |
135 | /* | |
136 | * Tagging protocol operations for adding and removing an | |
137 | * encapsulation tag. | |
138 | */ | |
139 | const struct dsa_device_ops *tag_ops; | |
cf50dcc2 BH |
140 | }; |
141 | ||
c8b09808 AL |
142 | struct dsa_port { |
143 | struct net_device *netdev; | |
189b0d93 | 144 | struct device_node *dn; |
34a79f63 | 145 | unsigned int ageing_time; |
732f794c | 146 | u8 stp_state; |
c8b09808 AL |
147 | }; |
148 | ||
c8f0b869 | 149 | struct dsa_switch { |
c33063d6 AL |
150 | struct device *dev; |
151 | ||
c8f0b869 BH |
152 | /* |
153 | * Parent switch tree, and switch index. | |
154 | */ | |
155 | struct dsa_switch_tree *dst; | |
156 | int index; | |
157 | ||
7543a6d5 AL |
158 | /* |
159 | * Give the switch driver somewhere to hang its private data | |
160 | * structure. | |
161 | */ | |
162 | void *priv; | |
163 | ||
c8f0b869 BH |
164 | /* |
165 | * Configuration data for this switch. | |
166 | */ | |
ff04955c | 167 | struct dsa_chip_data *cd; |
c8f0b869 BH |
168 | |
169 | /* | |
9d490b4e | 170 | * The switch operations. |
c8f0b869 | 171 | */ |
9d490b4e | 172 | struct dsa_switch_ops *ops; |
c8f0b869 | 173 | |
66472fc0 AL |
174 | /* |
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. | |
178 | */ | |
179 | s8 rtable[DSA_MAX_SWITCHES]; | |
180 | ||
51579c3f GR |
181 | #ifdef CONFIG_NET_DSA_HWMON |
182 | /* | |
183 | * Hardware monitoring information | |
184 | */ | |
185 | char hwmon_name[IFNAMSIZ + 8]; | |
186 | struct device *hwmon_dev; | |
187 | #endif | |
188 | ||
83c0afae AL |
189 | /* |
190 | * The lower device this switch uses to talk to the host | |
191 | */ | |
192 | struct net_device *master_netdev; | |
193 | ||
c8f0b869 BH |
194 | /* |
195 | * Slave mii_bus and devices for the individual ports. | |
196 | */ | |
197 | u32 dsa_port_mask; | |
83c0afae | 198 | u32 cpu_port_mask; |
74c3e2a5 | 199 | u32 enabled_port_mask; |
0d8bcdd3 | 200 | u32 phys_mii_mask; |
c8b09808 | 201 | struct dsa_port ports[DSA_MAX_PORTS]; |
c8f0b869 | 202 | struct mii_bus *slave_mii_bus; |
c8f0b869 BH |
203 | }; |
204 | ||
205 | static inline bool dsa_is_cpu_port(struct dsa_switch *ds, int p) | |
206 | { | |
207 | return !!(ds->index == ds->dst->cpu_switch && p == ds->dst->cpu_port); | |
208 | } | |
209 | ||
60045cbf AL |
210 | static inline bool dsa_is_dsa_port(struct dsa_switch *ds, int p) |
211 | { | |
212 | return !!((ds->dsa_port_mask) & (1 << p)); | |
213 | } | |
214 | ||
d79d2107 GR |
215 | static inline bool dsa_is_port_initialized(struct dsa_switch *ds, int p) |
216 | { | |
c8b09808 | 217 | return ds->enabled_port_mask & (1 << p) && ds->ports[p].netdev; |
d79d2107 GR |
218 | } |
219 | ||
c8f0b869 BH |
220 | static inline u8 dsa_upstream_port(struct dsa_switch *ds) |
221 | { | |
222 | struct dsa_switch_tree *dst = ds->dst; | |
223 | ||
224 | /* | |
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. | |
229 | */ | |
230 | if (dst->cpu_switch == ds->index) | |
231 | return dst->cpu_port; | |
232 | else | |
66472fc0 | 233 | return ds->rtable[dst->cpu_switch]; |
c8f0b869 BH |
234 | } |
235 | ||
146a3206 | 236 | struct switchdev_trans; |
ea70ba98 | 237 | struct switchdev_obj; |
146a3206 | 238 | struct switchdev_obj_port_fdb; |
8df30255 | 239 | struct switchdev_obj_port_mdb; |
76e398a6 | 240 | struct switchdev_obj_port_vlan; |
146a3206 | 241 | |
9d490b4e | 242 | struct dsa_switch_ops { |
c8f0b869 BH |
243 | struct list_head list; |
244 | ||
c8f0b869 BH |
245 | /* |
246 | * Probing and setup. | |
247 | */ | |
0209d144 VD |
248 | const char *(*probe)(struct device *dsa_dev, |
249 | struct device *host_dev, int sw_addr, | |
250 | void **priv); | |
7b314362 AL |
251 | |
252 | enum dsa_tag_protocol (*get_tag_protocol)(struct dsa_switch *ds); | |
253 | ||
c8f0b869 BH |
254 | int (*setup)(struct dsa_switch *ds); |
255 | int (*set_addr)(struct dsa_switch *ds, u8 *addr); | |
6819563e | 256 | u32 (*get_phy_flags)(struct dsa_switch *ds, int port); |
c8f0b869 BH |
257 | |
258 | /* | |
259 | * Access to the switch's PHY registers. | |
260 | */ | |
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); | |
264 | ||
ec9436ba FF |
265 | /* |
266 | * Link state adjustment (called from libphy) | |
267 | */ | |
268 | void (*adjust_link)(struct dsa_switch *ds, int port, | |
269 | struct phy_device *phydev); | |
ce31b31c FF |
270 | void (*fixed_link_update)(struct dsa_switch *ds, int port, |
271 | struct fixed_phy_status *st); | |
ec9436ba | 272 | |
c8f0b869 BH |
273 | /* |
274 | * ethtool hardware statistics. | |
275 | */ | |
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); | |
24462549 | 280 | |
19e57c4e FF |
281 | /* |
282 | * ethtool Wake-on-LAN | |
283 | */ | |
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); | |
288 | ||
24462549 FF |
289 | /* |
290 | * Suspend and resume | |
291 | */ | |
292 | int (*suspend)(struct dsa_switch *ds); | |
293 | int (*resume)(struct dsa_switch *ds); | |
b2f2af21 FF |
294 | |
295 | /* | |
296 | * Port enable/disable | |
297 | */ | |
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); | |
7905288f FF |
302 | |
303 | /* | |
304 | * EEE setttings | |
305 | */ | |
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); | |
51579c3f GR |
311 | |
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); | |
318 | #endif | |
6793abb4 GR |
319 | |
320 | /* EEPROM access */ | |
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); | |
3d762a0f GR |
326 | |
327 | /* | |
328 | * Register access. | |
329 | */ | |
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); | |
b73adef6 FF |
333 | |
334 | /* | |
335 | * Bridge integration | |
336 | */ | |
34a79f63 | 337 | int (*set_ageing_time)(struct dsa_switch *ds, unsigned int msecs); |
71327a4e | 338 | int (*port_bridge_join)(struct dsa_switch *ds, int port, |
a6692754 | 339 | struct net_device *bridge); |
16bfa702 | 340 | void (*port_bridge_leave)(struct dsa_switch *ds, int port); |
43c44a9f VD |
341 | void (*port_stp_state_set)(struct dsa_switch *ds, int port, |
342 | u8 state); | |
732f794c | 343 | void (*port_fast_age)(struct dsa_switch *ds, int port); |
2a778e1b | 344 | |
11149536 VD |
345 | /* |
346 | * VLAN support | |
347 | */ | |
fb2dabad VD |
348 | int (*port_vlan_filtering)(struct dsa_switch *ds, int port, |
349 | bool vlan_filtering); | |
76e398a6 VD |
350 | int (*port_vlan_prepare)(struct dsa_switch *ds, int port, |
351 | const struct switchdev_obj_port_vlan *vlan, | |
352 | struct switchdev_trans *trans); | |
4d5770b3 | 353 | void (*port_vlan_add)(struct dsa_switch *ds, int port, |
76e398a6 VD |
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); | |
65aebfc0 VD |
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)); | |
11149536 | 361 | |
2a778e1b VD |
362 | /* |
363 | * Forwarding database | |
364 | */ | |
146a3206 VD |
365 | int (*port_fdb_prepare)(struct dsa_switch *ds, int port, |
366 | const struct switchdev_obj_port_fdb *fdb, | |
367 | struct switchdev_trans *trans); | |
8497aa61 | 368 | void (*port_fdb_add)(struct dsa_switch *ds, int port, |
1f36faf2 VD |
369 | const struct switchdev_obj_port_fdb *fdb, |
370 | struct switchdev_trans *trans); | |
2a778e1b | 371 | int (*port_fdb_del)(struct dsa_switch *ds, int port, |
8057b3e7 | 372 | const struct switchdev_obj_port_fdb *fdb); |
ea70ba98 VD |
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)); | |
8df30255 VD |
376 | |
377 | /* | |
378 | * Multicast database | |
379 | */ | |
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)); | |
c8f0b869 BH |
391 | }; |
392 | ||
9d490b4e VD |
393 | void register_switch_driver(struct dsa_switch_ops *type); |
394 | void unregister_switch_driver(struct dsa_switch_ops *type); | |
b4d2394d | 395 | struct mii_bus *dsa_host_dev_to_mii_bus(struct device *dev); |
c8f0b869 | 396 | |
5aed85ce FF |
397 | static inline bool dsa_uses_tagged_protocol(struct dsa_switch_tree *dst) |
398 | { | |
5075314e | 399 | return dst->rcv != NULL; |
5aed85ce | 400 | } |
83c0afae AL |
401 | |
402 | void dsa_unregister_switch(struct dsa_switch *ds); | |
403 | int dsa_register_switch(struct dsa_switch *ds, struct device_node *np); | |
ea825e70 FF |
404 | #ifdef CONFIG_PM_SLEEP |
405 | int dsa_switch_suspend(struct dsa_switch *ds); | |
406 | int dsa_switch_resume(struct dsa_switch *ds); | |
407 | #else | |
408 | static inline int dsa_switch_suspend(struct dsa_switch *ds) | |
409 | { | |
410 | return 0; | |
411 | } | |
412 | static inline int dsa_switch_resume(struct dsa_switch *ds) | |
413 | { | |
414 | return 0; | |
415 | } | |
416 | #endif /* CONFIG_PM_SLEEP */ | |
417 | ||
91da11f8 | 418 | #endif |