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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, | |
29 | }; | |
5037d532 | 30 | |
e84665c9 LB |
31 | #define DSA_MAX_SWITCHES 4 |
32 | #define DSA_MAX_PORTS 12 | |
33 | ||
34 | struct dsa_chip_data { | |
35 | /* | |
36 | * How to access the switch configuration registers. | |
37 | */ | |
b4d2394d | 38 | struct device *host_dev; |
e84665c9 LB |
39 | int sw_addr; |
40 | ||
6793abb4 GR |
41 | /* set to size of eeprom if supported by the switch */ |
42 | int eeprom_len; | |
43 | ||
fa981d9a FF |
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 | |
47 | */ | |
48 | struct device_node *of_node; | |
49 | ||
e84665c9 LB |
50 | /* |
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. | |
56 | */ | |
57 | char *port_names[DSA_MAX_PORTS]; | |
bd47497a | 58 | struct device_node *port_dn[DSA_MAX_PORTS]; |
e84665c9 LB |
59 | |
60 | /* | |
4a7704ff AL |
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. | |
e84665c9 | 64 | */ |
4a7704ff | 65 | s8 rtable[DSA_MAX_SWITCHES]; |
e84665c9 | 66 | }; |
91da11f8 LB |
67 | |
68 | struct dsa_platform_data { | |
69 | /* | |
70 | * Reference to a Linux network interface that connects | |
e84665c9 | 71 | * to the root switch chip of the tree. |
91da11f8 LB |
72 | */ |
73 | struct device *netdev; | |
769a0202 | 74 | struct net_device *of_netdev; |
91da11f8 LB |
75 | |
76 | /* | |
e84665c9 LB |
77 | * Info structs describing each of the switch chips |
78 | * connected via this network interface. | |
91da11f8 | 79 | */ |
e84665c9 LB |
80 | int nr_chips; |
81 | struct dsa_chip_data *chip; | |
91da11f8 LB |
82 | }; |
83 | ||
5075314e | 84 | struct packet_type; |
3e8a72d1 | 85 | |
cf50dcc2 BH |
86 | struct dsa_switch_tree { |
87 | /* | |
88 | * Configuration data for the platform device that owns | |
89 | * this dsa switch tree instance. | |
90 | */ | |
91 | struct dsa_platform_data *pd; | |
92 | ||
93 | /* | |
94 | * Reference to network device to use, and which tagging | |
95 | * protocol to use. | |
96 | */ | |
97 | struct net_device *master_netdev; | |
5075314e AD |
98 | int (*rcv)(struct sk_buff *skb, |
99 | struct net_device *dev, | |
100 | struct packet_type *pt, | |
101 | struct net_device *orig_dev); | |
ac7a04c3 | 102 | enum dsa_tag_protocol tag_protocol; |
cf50dcc2 | 103 | |
badf3ada FF |
104 | /* |
105 | * Original copy of the master netdev ethtool_ops | |
106 | */ | |
107 | struct ethtool_ops master_ethtool_ops; | |
108 | ||
cf50dcc2 BH |
109 | /* |
110 | * The switch and port to which the CPU is attached. | |
111 | */ | |
112 | s8 cpu_switch; | |
113 | s8 cpu_port; | |
114 | ||
cf50dcc2 BH |
115 | /* |
116 | * Data for the individual switch chips. | |
117 | */ | |
118 | struct dsa_switch *ds[DSA_MAX_SWITCHES]; | |
119 | }; | |
120 | ||
c8b09808 AL |
121 | struct dsa_port { |
122 | struct net_device *netdev; | |
189b0d93 | 123 | struct device_node *dn; |
c8b09808 AL |
124 | }; |
125 | ||
c8f0b869 | 126 | struct dsa_switch { |
c33063d6 AL |
127 | struct device *dev; |
128 | ||
c8f0b869 BH |
129 | /* |
130 | * Parent switch tree, and switch index. | |
131 | */ | |
132 | struct dsa_switch_tree *dst; | |
133 | int index; | |
134 | ||
7543a6d5 AL |
135 | /* |
136 | * Give the switch driver somewhere to hang its private data | |
137 | * structure. | |
138 | */ | |
139 | void *priv; | |
140 | ||
c8f0b869 BH |
141 | /* |
142 | * Configuration data for this switch. | |
143 | */ | |
ff04955c | 144 | struct dsa_chip_data *cd; |
c8f0b869 BH |
145 | |
146 | /* | |
147 | * The used switch driver. | |
148 | */ | |
149 | struct dsa_switch_driver *drv; | |
150 | ||
51579c3f GR |
151 | #ifdef CONFIG_NET_DSA_HWMON |
152 | /* | |
153 | * Hardware monitoring information | |
154 | */ | |
155 | char hwmon_name[IFNAMSIZ + 8]; | |
156 | struct device *hwmon_dev; | |
157 | #endif | |
158 | ||
c8f0b869 BH |
159 | /* |
160 | * Slave mii_bus and devices for the individual ports. | |
161 | */ | |
162 | u32 dsa_port_mask; | |
74c3e2a5 | 163 | u32 enabled_port_mask; |
0d8bcdd3 | 164 | u32 phys_mii_mask; |
c8b09808 | 165 | struct dsa_port ports[DSA_MAX_PORTS]; |
c8f0b869 | 166 | struct mii_bus *slave_mii_bus; |
c8f0b869 BH |
167 | }; |
168 | ||
169 | static inline bool dsa_is_cpu_port(struct dsa_switch *ds, int p) | |
170 | { | |
171 | return !!(ds->index == ds->dst->cpu_switch && p == ds->dst->cpu_port); | |
172 | } | |
173 | ||
60045cbf AL |
174 | static inline bool dsa_is_dsa_port(struct dsa_switch *ds, int p) |
175 | { | |
176 | return !!((ds->dsa_port_mask) & (1 << p)); | |
177 | } | |
178 | ||
d79d2107 GR |
179 | static inline bool dsa_is_port_initialized(struct dsa_switch *ds, int p) |
180 | { | |
c8b09808 | 181 | return ds->enabled_port_mask & (1 << p) && ds->ports[p].netdev; |
d79d2107 GR |
182 | } |
183 | ||
c8f0b869 BH |
184 | static inline u8 dsa_upstream_port(struct dsa_switch *ds) |
185 | { | |
186 | struct dsa_switch_tree *dst = ds->dst; | |
187 | ||
188 | /* | |
189 | * If this is the root switch (i.e. the switch that connects | |
190 | * to the CPU), return the cpu port number on this switch. | |
191 | * Else return the (DSA) port number that connects to the | |
192 | * switch that is one hop closer to the cpu. | |
193 | */ | |
194 | if (dst->cpu_switch == ds->index) | |
195 | return dst->cpu_port; | |
196 | else | |
ff04955c | 197 | return ds->cd->rtable[dst->cpu_switch]; |
c8f0b869 BH |
198 | } |
199 | ||
146a3206 | 200 | struct switchdev_trans; |
ea70ba98 | 201 | struct switchdev_obj; |
146a3206 | 202 | struct switchdev_obj_port_fdb; |
76e398a6 | 203 | struct switchdev_obj_port_vlan; |
146a3206 | 204 | |
c8f0b869 BH |
205 | struct dsa_switch_driver { |
206 | struct list_head list; | |
207 | ||
ac7a04c3 | 208 | enum dsa_tag_protocol tag_protocol; |
c8f0b869 BH |
209 | |
210 | /* | |
211 | * Probing and setup. | |
212 | */ | |
0209d144 VD |
213 | const char *(*probe)(struct device *dsa_dev, |
214 | struct device *host_dev, int sw_addr, | |
215 | void **priv); | |
c8f0b869 BH |
216 | int (*setup)(struct dsa_switch *ds); |
217 | int (*set_addr)(struct dsa_switch *ds, u8 *addr); | |
6819563e | 218 | u32 (*get_phy_flags)(struct dsa_switch *ds, int port); |
c8f0b869 BH |
219 | |
220 | /* | |
221 | * Access to the switch's PHY registers. | |
222 | */ | |
223 | int (*phy_read)(struct dsa_switch *ds, int port, int regnum); | |
224 | int (*phy_write)(struct dsa_switch *ds, int port, | |
225 | int regnum, u16 val); | |
226 | ||
ec9436ba FF |
227 | /* |
228 | * Link state adjustment (called from libphy) | |
229 | */ | |
230 | void (*adjust_link)(struct dsa_switch *ds, int port, | |
231 | struct phy_device *phydev); | |
ce31b31c FF |
232 | void (*fixed_link_update)(struct dsa_switch *ds, int port, |
233 | struct fixed_phy_status *st); | |
ec9436ba | 234 | |
c8f0b869 BH |
235 | /* |
236 | * ethtool hardware statistics. | |
237 | */ | |
238 | void (*get_strings)(struct dsa_switch *ds, int port, uint8_t *data); | |
239 | void (*get_ethtool_stats)(struct dsa_switch *ds, | |
240 | int port, uint64_t *data); | |
241 | int (*get_sset_count)(struct dsa_switch *ds); | |
24462549 | 242 | |
19e57c4e FF |
243 | /* |
244 | * ethtool Wake-on-LAN | |
245 | */ | |
246 | void (*get_wol)(struct dsa_switch *ds, int port, | |
247 | struct ethtool_wolinfo *w); | |
248 | int (*set_wol)(struct dsa_switch *ds, int port, | |
249 | struct ethtool_wolinfo *w); | |
250 | ||
24462549 FF |
251 | /* |
252 | * Suspend and resume | |
253 | */ | |
254 | int (*suspend)(struct dsa_switch *ds); | |
255 | int (*resume)(struct dsa_switch *ds); | |
b2f2af21 FF |
256 | |
257 | /* | |
258 | * Port enable/disable | |
259 | */ | |
260 | int (*port_enable)(struct dsa_switch *ds, int port, | |
261 | struct phy_device *phy); | |
262 | void (*port_disable)(struct dsa_switch *ds, int port, | |
263 | struct phy_device *phy); | |
7905288f FF |
264 | |
265 | /* | |
266 | * EEE setttings | |
267 | */ | |
268 | int (*set_eee)(struct dsa_switch *ds, int port, | |
269 | struct phy_device *phydev, | |
270 | struct ethtool_eee *e); | |
271 | int (*get_eee)(struct dsa_switch *ds, int port, | |
272 | struct ethtool_eee *e); | |
51579c3f GR |
273 | |
274 | #ifdef CONFIG_NET_DSA_HWMON | |
275 | /* Hardware monitoring */ | |
276 | int (*get_temp)(struct dsa_switch *ds, int *temp); | |
277 | int (*get_temp_limit)(struct dsa_switch *ds, int *temp); | |
278 | int (*set_temp_limit)(struct dsa_switch *ds, int temp); | |
279 | int (*get_temp_alarm)(struct dsa_switch *ds, bool *alarm); | |
280 | #endif | |
6793abb4 GR |
281 | |
282 | /* EEPROM access */ | |
283 | int (*get_eeprom_len)(struct dsa_switch *ds); | |
284 | int (*get_eeprom)(struct dsa_switch *ds, | |
285 | struct ethtool_eeprom *eeprom, u8 *data); | |
286 | int (*set_eeprom)(struct dsa_switch *ds, | |
287 | struct ethtool_eeprom *eeprom, u8 *data); | |
3d762a0f GR |
288 | |
289 | /* | |
290 | * Register access. | |
291 | */ | |
292 | int (*get_regs_len)(struct dsa_switch *ds, int port); | |
293 | void (*get_regs)(struct dsa_switch *ds, int port, | |
294 | struct ethtool_regs *regs, void *p); | |
b73adef6 FF |
295 | |
296 | /* | |
297 | * Bridge integration | |
298 | */ | |
71327a4e | 299 | int (*port_bridge_join)(struct dsa_switch *ds, int port, |
a6692754 | 300 | struct net_device *bridge); |
16bfa702 | 301 | void (*port_bridge_leave)(struct dsa_switch *ds, int port); |
43c44a9f VD |
302 | void (*port_stp_state_set)(struct dsa_switch *ds, int port, |
303 | u8 state); | |
2a778e1b | 304 | |
11149536 VD |
305 | /* |
306 | * VLAN support | |
307 | */ | |
fb2dabad VD |
308 | int (*port_vlan_filtering)(struct dsa_switch *ds, int port, |
309 | bool vlan_filtering); | |
76e398a6 VD |
310 | int (*port_vlan_prepare)(struct dsa_switch *ds, int port, |
311 | const struct switchdev_obj_port_vlan *vlan, | |
312 | struct switchdev_trans *trans); | |
4d5770b3 | 313 | void (*port_vlan_add)(struct dsa_switch *ds, int port, |
76e398a6 VD |
314 | const struct switchdev_obj_port_vlan *vlan, |
315 | struct switchdev_trans *trans); | |
316 | int (*port_vlan_del)(struct dsa_switch *ds, int port, | |
317 | const struct switchdev_obj_port_vlan *vlan); | |
65aebfc0 VD |
318 | int (*port_vlan_dump)(struct dsa_switch *ds, int port, |
319 | struct switchdev_obj_port_vlan *vlan, | |
320 | int (*cb)(struct switchdev_obj *obj)); | |
11149536 | 321 | |
2a778e1b VD |
322 | /* |
323 | * Forwarding database | |
324 | */ | |
146a3206 VD |
325 | int (*port_fdb_prepare)(struct dsa_switch *ds, int port, |
326 | const struct switchdev_obj_port_fdb *fdb, | |
327 | struct switchdev_trans *trans); | |
8497aa61 | 328 | void (*port_fdb_add)(struct dsa_switch *ds, int port, |
1f36faf2 VD |
329 | const struct switchdev_obj_port_fdb *fdb, |
330 | struct switchdev_trans *trans); | |
2a778e1b | 331 | int (*port_fdb_del)(struct dsa_switch *ds, int port, |
8057b3e7 | 332 | const struct switchdev_obj_port_fdb *fdb); |
ea70ba98 VD |
333 | int (*port_fdb_dump)(struct dsa_switch *ds, int port, |
334 | struct switchdev_obj_port_fdb *fdb, | |
335 | int (*cb)(struct switchdev_obj *obj)); | |
c8f0b869 BH |
336 | }; |
337 | ||
338 | void register_switch_driver(struct dsa_switch_driver *type); | |
339 | void unregister_switch_driver(struct dsa_switch_driver *type); | |
b4d2394d | 340 | struct mii_bus *dsa_host_dev_to_mii_bus(struct device *dev); |
c8f0b869 | 341 | |
7fa857ed FF |
342 | static inline void *ds_to_priv(struct dsa_switch *ds) |
343 | { | |
7543a6d5 | 344 | return ds->priv; |
7fa857ed FF |
345 | } |
346 | ||
5aed85ce FF |
347 | static inline bool dsa_uses_tagged_protocol(struct dsa_switch_tree *dst) |
348 | { | |
5075314e | 349 | return dst->rcv != NULL; |
5aed85ce | 350 | } |
91da11f8 | 351 | #endif |