1 /*
2 * drivers/net/ethernet/mellanox/mlxsw/core.h
3 * Copyright (c) 2015 Mellanox Technologies. All rights reserved.
4 * Copyright (c) 2015 Jiri Pirko <jiri@mellanox.com>
5 * Copyright (c) 2015 Ido Schimmel <idosch@mellanox.com>
6 * Copyright (c) 2015 Elad Raz <eladr@mellanox.com>
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are met:
10 *
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the names of the copyright holders nor the names of its
17 * contributors may be used to endorse or promote products derived from
18 * this software without specific prior written permission.
19 *
20 * Alternatively, this software may be distributed under the terms of the
21 * GNU General Public License ("GPL") version 2 as published by the Free
22 * Software Foundation.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
28 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
32 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
33 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
34 * POSSIBILITY OF SUCH DAMAGE.
35 */
36
37 #ifndef _MLXSW_CORE_H
38 #define _MLXSW_CORE_H
39
40 #include <linux/module.h>
41 #include <linux/device.h>
42 #include <linux/slab.h>
43 #include <linux/gfp.h>
44 #include <linux/types.h>
45 #include <linux/skbuff.h>
46 #include <linux/workqueue.h>
47 #include <net/devlink.h>
48
49 #include "trap.h"
50 #include "reg.h"
51
52 #include "cmd.h"
53
54 #define MLXSW_MODULE_ALIAS_PREFIX "mlxsw-driver-"
55 #define MODULE_MLXSW_DRIVER_ALIAS(kind) \
56 MODULE_ALIAS(MLXSW_MODULE_ALIAS_PREFIX kind)
57
58 #define MLXSW_DEVICE_KIND_SWITCHX2 "switchx2"
59 #define MLXSW_DEVICE_KIND_SPECTRUM "spectrum"
60
61 struct mlxsw_core;
62 struct mlxsw_driver;
63 struct mlxsw_bus;
64 struct mlxsw_bus_info;
65
66 void *mlxsw_core_driver_priv(struct mlxsw_core *mlxsw_core);
67
68 int mlxsw_core_driver_register(struct mlxsw_driver *mlxsw_driver);
69 void mlxsw_core_driver_unregister(struct mlxsw_driver *mlxsw_driver);
70
71 int mlxsw_core_bus_device_register(const struct mlxsw_bus_info *mlxsw_bus_info,
72 const struct mlxsw_bus *mlxsw_bus,
73 void *bus_priv);
74 void mlxsw_core_bus_device_unregister(struct mlxsw_core *mlxsw_core);
75
76 struct mlxsw_tx_info {
77 u8 local_port;
78 bool is_emad;
79 };
80
81 bool mlxsw_core_skb_transmit_busy(struct mlxsw_core *mlxsw_core,
82 const struct mlxsw_tx_info *tx_info);
83 int mlxsw_core_skb_transmit(struct mlxsw_core *mlxsw_core, struct sk_buff *skb,
84 const struct mlxsw_tx_info *tx_info);
85
86 struct mlxsw_rx_listener {
87 void (*func)(struct sk_buff *skb, u8 local_port, void *priv);
88 u8 local_port;
89 u16 trap_id;
90 enum mlxsw_reg_hpkt_action action;
91 };
92
93 struct mlxsw_event_listener {
94 void (*func)(const struct mlxsw_reg_info *reg,
95 char *payload, void *priv);
96 enum mlxsw_event_trap_id trap_id;
97 };
98
99 int mlxsw_core_rx_listener_register(struct mlxsw_core *mlxsw_core,
100 const struct mlxsw_rx_listener *rxl,
101 void *priv);
102 void mlxsw_core_rx_listener_unregister(struct mlxsw_core *mlxsw_core,
103 const struct mlxsw_rx_listener *rxl,
104 void *priv);
105
106 int mlxsw_core_event_listener_register(struct mlxsw_core *mlxsw_core,
107 const struct mlxsw_event_listener *el,
108 void *priv);
109 void mlxsw_core_event_listener_unregister(struct mlxsw_core *mlxsw_core,
110 const struct mlxsw_event_listener *el,
111 void *priv);
112
113 typedef void mlxsw_reg_trans_cb_t(struct mlxsw_core *mlxsw_core, char *payload,
114 size_t payload_len, unsigned long cb_priv);
115
116 int mlxsw_reg_trans_query(struct mlxsw_core *mlxsw_core,
117 const struct mlxsw_reg_info *reg, char *payload,
118 struct list_head *bulk_list,
119 mlxsw_reg_trans_cb_t *cb, unsigned long cb_priv);
120 int mlxsw_reg_trans_write(struct mlxsw_core *mlxsw_core,
121 const struct mlxsw_reg_info *reg, char *payload,
122 struct list_head *bulk_list,
123 mlxsw_reg_trans_cb_t *cb, unsigned long cb_priv);
124 int mlxsw_reg_trans_bulk_wait(struct list_head *bulk_list);
125
126 int mlxsw_reg_query(struct mlxsw_core *mlxsw_core,
127 const struct mlxsw_reg_info *reg, char *payload);
128 int mlxsw_reg_write(struct mlxsw_core *mlxsw_core,
129 const struct mlxsw_reg_info *reg, char *payload);
130
131 struct mlxsw_rx_info {
132 bool is_lag;
133 union {
134 u16 sys_port;
135 u16 lag_id;
136 } u;
137 u8 lag_port_index;
138 int trap_id;
139 };
140
141 void mlxsw_core_skb_receive(struct mlxsw_core *mlxsw_core, struct sk_buff *skb,
142 struct mlxsw_rx_info *rx_info);
143
144 void mlxsw_core_lag_mapping_set(struct mlxsw_core *mlxsw_core,
145 u16 lag_id, u8 port_index, u8 local_port);
146 u8 mlxsw_core_lag_mapping_get(struct mlxsw_core *mlxsw_core,
147 u16 lag_id, u8 port_index);
148 void mlxsw_core_lag_mapping_clear(struct mlxsw_core *mlxsw_core,
149 u16 lag_id, u8 local_port);
150
151 struct mlxsw_core_port {
152 struct devlink_port devlink_port;
153 };
154
155 static inline void *
mlxsw_core_port_driver_priv(struct mlxsw_core_port * mlxsw_core_port)156 mlxsw_core_port_driver_priv(struct mlxsw_core_port *mlxsw_core_port)
157 {
158 /* mlxsw_core_port is ensured to always be the first field in driver
159 * port structure.
160 */
161 return mlxsw_core_port;
162 }
163
164 int mlxsw_core_port_init(struct mlxsw_core *mlxsw_core,
165 struct mlxsw_core_port *mlxsw_core_port, u8 local_port,
166 struct net_device *dev, bool split, u32 split_group);
167 void mlxsw_core_port_fini(struct mlxsw_core_port *mlxsw_core_port);
168
169 int mlxsw_core_schedule_dw(struct delayed_work *dwork, unsigned long delay);
170
171 #define MLXSW_CONFIG_PROFILE_SWID_COUNT 8
172
173 struct mlxsw_swid_config {
174 u8 used_type:1,
175 used_properties:1;
176 u8 type;
177 u8 properties;
178 };
179
180 struct mlxsw_config_profile {
181 u16 used_max_vepa_channels:1,
182 used_max_mid:1,
183 used_max_pgt:1,
184 used_max_system_port:1,
185 used_max_vlan_groups:1,
186 used_max_regions:1,
187 used_flood_tables:1,
188 used_flood_mode:1,
189 used_max_ib_mc:1,
190 used_max_pkey:1,
191 used_ar_sec:1,
192 used_adaptive_routing_group_cap:1,
193 used_kvd_split_data:1; /* indicate for the kvd's values */
194
195 u8 max_vepa_channels;
196 u16 max_mid;
197 u16 max_pgt;
198 u16 max_system_port;
199 u16 max_vlan_groups;
200 u16 max_regions;
201 u8 max_flood_tables;
202 u8 max_vid_flood_tables;
203 u8 flood_mode;
204 u8 max_fid_offset_flood_tables;
205 u16 fid_offset_flood_table_size;
206 u8 max_fid_flood_tables;
207 u16 fid_flood_table_size;
208 u16 max_ib_mc;
209 u16 max_pkey;
210 u8 ar_sec;
211 u16 adaptive_routing_group_cap;
212 u8 arn;
213 u32 kvd_linear_size;
214 u16 kvd_hash_granularity;
215 u8 kvd_hash_single_parts;
216 u8 kvd_hash_double_parts;
217 u8 resource_query_enable;
218 struct mlxsw_swid_config swid_config[MLXSW_CONFIG_PROFILE_SWID_COUNT];
219 };
220
221 struct mlxsw_driver {
222 struct list_head list;
223 const char *kind;
224 struct module *owner;
225 size_t priv_size;
226 int (*init)(struct mlxsw_core *mlxsw_core,
227 const struct mlxsw_bus_info *mlxsw_bus_info);
228 void (*fini)(struct mlxsw_core *mlxsw_core);
229 int (*port_split)(struct mlxsw_core *mlxsw_core, u8 local_port,
230 unsigned int count);
231 int (*port_unsplit)(struct mlxsw_core *mlxsw_core, u8 local_port);
232 int (*sb_pool_get)(struct mlxsw_core *mlxsw_core,
233 unsigned int sb_index, u16 pool_index,
234 struct devlink_sb_pool_info *pool_info);
235 int (*sb_pool_set)(struct mlxsw_core *mlxsw_core,
236 unsigned int sb_index, u16 pool_index, u32 size,
237 enum devlink_sb_threshold_type threshold_type);
238 int (*sb_port_pool_get)(struct mlxsw_core_port *mlxsw_core_port,
239 unsigned int sb_index, u16 pool_index,
240 u32 *p_threshold);
241 int (*sb_port_pool_set)(struct mlxsw_core_port *mlxsw_core_port,
242 unsigned int sb_index, u16 pool_index,
243 u32 threshold);
244 int (*sb_tc_pool_bind_get)(struct mlxsw_core_port *mlxsw_core_port,
245 unsigned int sb_index, u16 tc_index,
246 enum devlink_sb_pool_type pool_type,
247 u16 *p_pool_index, u32 *p_threshold);
248 int (*sb_tc_pool_bind_set)(struct mlxsw_core_port *mlxsw_core_port,
249 unsigned int sb_index, u16 tc_index,
250 enum devlink_sb_pool_type pool_type,
251 u16 pool_index, u32 threshold);
252 int (*sb_occ_snapshot)(struct mlxsw_core *mlxsw_core,
253 unsigned int sb_index);
254 int (*sb_occ_max_clear)(struct mlxsw_core *mlxsw_core,
255 unsigned int sb_index);
256 int (*sb_occ_port_pool_get)(struct mlxsw_core_port *mlxsw_core_port,
257 unsigned int sb_index, u16 pool_index,
258 u32 *p_cur, u32 *p_max);
259 int (*sb_occ_tc_port_bind_get)(struct mlxsw_core_port *mlxsw_core_port,
260 unsigned int sb_index, u16 tc_index,
261 enum devlink_sb_pool_type pool_type,
262 u32 *p_cur, u32 *p_max);
263 void (*txhdr_construct)(struct sk_buff *skb,
264 const struct mlxsw_tx_info *tx_info);
265 u8 txhdr_len;
266 const struct mlxsw_config_profile *profile;
267 };
268
269 struct mlxsw_resources {
270 u32 max_span_valid:1,
271 max_lag_valid:1,
272 max_ports_in_lag_valid:1,
273 kvd_size_valid:1,
274 kvd_single_min_size_valid:1,
275 kvd_double_min_size_valid:1,
276 max_virtual_routers_valid:1,
277 max_system_ports_valid:1,
278 max_vlan_groups_valid:1,
279 max_regions_valid:1,
280 max_rif_valid:1;
281 u8 max_span;
282 u8 max_lag;
283 u8 max_ports_in_lag;
284 u32 kvd_size;
285 u32 kvd_single_min_size;
286 u32 kvd_double_min_size;
287 u16 max_virtual_routers;
288 u16 max_system_ports;
289 u16 max_vlan_groups;
290 u16 max_regions;
291 u16 max_rif;
292
293 /* Internal resources.
294 * Determined by the SW, not queried from the HW.
295 */
296 u32 kvd_single_size;
297 u32 kvd_double_size;
298 u32 kvd_linear_size;
299 };
300
301 struct mlxsw_resources *mlxsw_core_resources_get(struct mlxsw_core *mlxsw_core);
302
303 struct mlxsw_bus {
304 const char *kind;
305 int (*init)(void *bus_priv, struct mlxsw_core *mlxsw_core,
306 const struct mlxsw_config_profile *profile,
307 struct mlxsw_resources *resources);
308 void (*fini)(void *bus_priv);
309 bool (*skb_transmit_busy)(void *bus_priv,
310 const struct mlxsw_tx_info *tx_info);
311 int (*skb_transmit)(void *bus_priv, struct sk_buff *skb,
312 const struct mlxsw_tx_info *tx_info);
313 int (*cmd_exec)(void *bus_priv, u16 opcode, u8 opcode_mod,
314 u32 in_mod, bool out_mbox_direct,
315 char *in_mbox, size_t in_mbox_size,
316 char *out_mbox, size_t out_mbox_size,
317 u8 *p_status);
318 };
319
320 struct mlxsw_bus_info {
321 const char *device_kind;
322 const char *device_name;
323 struct device *dev;
324 struct {
325 u16 major;
326 u16 minor;
327 u16 subminor;
328 } fw_rev;
329 u8 vsd[MLXSW_CMD_BOARDINFO_VSD_LEN];
330 u8 psid[MLXSW_CMD_BOARDINFO_PSID_LEN];
331 };
332
333 struct mlxsw_hwmon;
334
335 #ifdef CONFIG_MLXSW_CORE_HWMON
336
337 int mlxsw_hwmon_init(struct mlxsw_core *mlxsw_core,
338 const struct mlxsw_bus_info *mlxsw_bus_info,
339 struct mlxsw_hwmon **p_hwmon);
340 void mlxsw_hwmon_fini(struct mlxsw_hwmon *mlxsw_hwmon);
341
342 #else
343
mlxsw_hwmon_init(struct mlxsw_core * mlxsw_core,const struct mlxsw_bus_info * mlxsw_bus_info,struct mlxsw_hwmon ** p_hwmon)344 static inline int mlxsw_hwmon_init(struct mlxsw_core *mlxsw_core,
345 const struct mlxsw_bus_info *mlxsw_bus_info,
346 struct mlxsw_hwmon **p_hwmon)
347 {
348 return 0;
349 }
350
351 #endif
352
353 #endif
354