drivers/net/ethernet/mellanox/mlxsw/core.h

   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 };
  91
  92 struct mlxsw_event_listener {
  93         void (*func)(const struct mlxsw_reg_info *reg,
  94                      char *payload, void *priv);
  95         enum mlxsw_event_trap_id trap_id;
  96 };
  97
  98 int mlxsw_core_rx_listener_register(struct mlxsw_core *mlxsw_core,
  99                                     const struct mlxsw_rx_listener *rxl,
 100                                     void *priv);
 101 void mlxsw_core_rx_listener_unregister(struct mlxsw_core *mlxsw_core,
 102                                        const struct mlxsw_rx_listener *rxl,
 103                                        void *priv);
 104
 105 int mlxsw_core_event_listener_register(struct mlxsw_core *mlxsw_core,
 106                                        const struct mlxsw_event_listener *el,
 107                                        void *priv);
 108 void mlxsw_core_event_listener_unregister(struct mlxsw_core *mlxsw_core,
 109                                           const struct mlxsw_event_listener *el,
 110                                           void *priv);
 111
 112 typedef void mlxsw_reg_trans_cb_t(struct mlxsw_core *mlxsw_core, char *payload,
 113                                   size_t payload_len, unsigned long cb_priv);
 114
 115 int mlxsw_reg_trans_query(struct mlxsw_core *mlxsw_core,
 116                           const struct mlxsw_reg_info *reg, char *payload,
 117                           struct list_head *bulk_list,
 118                           mlxsw_reg_trans_cb_t *cb, unsigned long cb_priv);
 119 int mlxsw_reg_trans_write(struct mlxsw_core *mlxsw_core,
 120                           const struct mlxsw_reg_info *reg, char *payload,
 121                           struct list_head *bulk_list,
 122                           mlxsw_reg_trans_cb_t *cb, unsigned long cb_priv);
 123 int mlxsw_reg_trans_bulk_wait(struct list_head *bulk_list);
 124
 125 int mlxsw_reg_query(struct mlxsw_core *mlxsw_core,
 126                     const struct mlxsw_reg_info *reg, char *payload);
 127 int mlxsw_reg_write(struct mlxsw_core *mlxsw_core,
 128                     const struct mlxsw_reg_info *reg, char *payload);
 129
 130 struct mlxsw_rx_info {
 131         bool is_lag;
 132         union {
 133                 u16 sys_port;
 134                 u16 lag_id;
 135         } u;
 136         u8 lag_port_index;
 137         int trap_id;
 138 };
 139
 140 void mlxsw_core_skb_receive(struct mlxsw_core *mlxsw_core, struct sk_buff *skb,
 141                             struct mlxsw_rx_info *rx_info);
 142
 143 void mlxsw_core_lag_mapping_set(struct mlxsw_core *mlxsw_core,
 144                                 u16 lag_id, u8 port_index, u8 local_port);
 145 u8 mlxsw_core_lag_mapping_get(struct mlxsw_core *mlxsw_core,
 146                               u16 lag_id, u8 port_index);
 147 void mlxsw_core_lag_mapping_clear(struct mlxsw_core *mlxsw_core,
 148                                   u16 lag_id, u8 local_port);
 149
 150 struct mlxsw_core_port {
 151         struct devlink_port devlink_port;
 152 };
 153
 154 static inline void *
 155 mlxsw_core_port_driver_priv(struct mlxsw_core_port *mlxsw_core_port)
 156 {
 157         /* mlxsw_core_port is ensured to always be the first field in driver
 158          * port structure.
 159          */
 160         return mlxsw_core_port;
 161 }
 162
 163 int mlxsw_core_port_init(struct mlxsw_core *mlxsw_core,
 164                          struct mlxsw_core_port *mlxsw_core_port, u8 local_port,
 165                          struct net_device *dev, bool split, u32 split_group);
 166 void mlxsw_core_port_fini(struct mlxsw_core_port *mlxsw_core_port);
 167
 168 int mlxsw_core_schedule_dw(struct delayed_work *dwork, unsigned long delay);
 169
 170 #define MLXSW_CONFIG_PROFILE_SWID_COUNT 8
 171
 172 struct mlxsw_swid_config {
 173         u8      used_type:1,
 174                 used_properties:1;
 175         u8      type;
 176         u8      properties;
 177 };
 178
 179 struct mlxsw_config_profile {
 180         u16     used_max_vepa_channels:1,
 181                 used_max_lag:1,
 182                 used_max_port_per_lag:1,
 183                 used_max_mid:1,
 184                 used_max_pgt:1,
 185                 used_max_system_port:1,
 186                 used_max_vlan_groups:1,
 187                 used_max_regions:1,
 188                 used_flood_tables:1,
 189                 used_flood_mode:1,
 190                 used_max_ib_mc:1,
 191                 used_max_pkey:1,
 192                 used_ar_sec:1,
 193                 used_adaptive_routing_group_cap:1,
 194                 used_kvd_sizes:1;
 195         u8      max_vepa_channels;
 196         u16     max_lag;
 197         u16     max_port_per_lag;
 198         u16     max_mid;
 199         u16     max_pgt;
 200         u16     max_system_port;
 201         u16     max_vlan_groups;
 202         u16     max_regions;
 203         u8      max_flood_tables;
 204         u8      max_vid_flood_tables;
 205         u8      flood_mode;
 206         u8      max_fid_offset_flood_tables;
 207         u16     fid_offset_flood_table_size;
 208         u8      max_fid_flood_tables;
 209         u16     fid_flood_table_size;
 210         u16     max_ib_mc;
 211         u16     max_pkey;
 212         u8      ar_sec;
 213         u16     adaptive_routing_group_cap;
 214         u8      arn;
 215         u32     kvd_linear_size;
 216         u32     kvd_hash_single_size;
 217         u32     kvd_hash_double_size;
 218         u8      resource_query_enable;
 219         struct mlxsw_swid_config swid_config[MLXSW_CONFIG_PROFILE_SWID_COUNT];
 220 };
 221
 222 struct mlxsw_driver {
 223         struct list_head list;
 224         const char *kind;
 225         struct module *owner;
 226         size_t priv_size;
 227         int (*init)(struct mlxsw_core *mlxsw_core,
 228                     const struct mlxsw_bus_info *mlxsw_bus_info);
 229         void (*fini)(struct mlxsw_core *mlxsw_core);
 230         int (*port_split)(struct mlxsw_core *mlxsw_core, u8 local_port,
 231                           unsigned int count);
 232         int (*port_unsplit)(struct mlxsw_core *mlxsw_core, u8 local_port);
 233         int (*sb_pool_get)(struct mlxsw_core *mlxsw_core,
 234                            unsigned int sb_index, u16 pool_index,
 235                            struct devlink_sb_pool_info *pool_info);
 236         int (*sb_pool_set)(struct mlxsw_core *mlxsw_core,
 237                            unsigned int sb_index, u16 pool_index, u32 size,
 238                            enum devlink_sb_threshold_type threshold_type);
 239         int (*sb_port_pool_get)(struct mlxsw_core_port *mlxsw_core_port,
 240                                 unsigned int sb_index, u16 pool_index,
 241                                 u32 *p_threshold);
 242         int (*sb_port_pool_set)(struct mlxsw_core_port *mlxsw_core_port,
 243                                 unsigned int sb_index, u16 pool_index,
 244                                 u32 threshold);
 245         int (*sb_tc_pool_bind_get)(struct mlxsw_core_port *mlxsw_core_port,
 246                                    unsigned int sb_index, u16 tc_index,
 247                                    enum devlink_sb_pool_type pool_type,
 248                                    u16 *p_pool_index, u32 *p_threshold);
 249         int (*sb_tc_pool_bind_set)(struct mlxsw_core_port *mlxsw_core_port,
 250                                    unsigned int sb_index, u16 tc_index,
 251                                    enum devlink_sb_pool_type pool_type,
 252                                    u16 pool_index, u32 threshold);
 253         int (*sb_occ_snapshot)(struct mlxsw_core *mlxsw_core,
 254                                unsigned int sb_index);
 255         int (*sb_occ_max_clear)(struct mlxsw_core *mlxsw_core,
 256                                 unsigned int sb_index);
 257         int (*sb_occ_port_pool_get)(struct mlxsw_core_port *mlxsw_core_port,
 258                                     unsigned int sb_index, u16 pool_index,
 259                                     u32 *p_cur, u32 *p_max);
 260         int (*sb_occ_tc_port_bind_get)(struct mlxsw_core_port *mlxsw_core_port,
 261                                        unsigned int sb_index, u16 tc_index,
 262                                        enum devlink_sb_pool_type pool_type,
 263                                        u32 *p_cur, u32 *p_max);
 264         void (*txhdr_construct)(struct sk_buff *skb,
 265                                 const struct mlxsw_tx_info *tx_info);
 266         u8 txhdr_len;
 267         const struct mlxsw_config_profile *profile;
 268 };
 269
 270 struct mlxsw_resources {
 271         u8      max_span_valid:1;
 272         u8      max_span;
 273 };
 274
 275 struct mlxsw_resources *mlxsw_core_resources_get(struct mlxsw_core *mlxsw_core);
 276
 277 struct mlxsw_bus {
 278         const char *kind;
 279         int (*init)(void *bus_priv, struct mlxsw_core *mlxsw_core,
 280                     const struct mlxsw_config_profile *profile,
 281                     struct mlxsw_resources *resources);
 282         void (*fini)(void *bus_priv);
 283         bool (*skb_transmit_busy)(void *bus_priv,
 284                                   const struct mlxsw_tx_info *tx_info);
 285         int (*skb_transmit)(void *bus_priv, struct sk_buff *skb,
 286                             const struct mlxsw_tx_info *tx_info);
 287         int (*cmd_exec)(void *bus_priv, u16 opcode, u8 opcode_mod,
 288                         u32 in_mod, bool out_mbox_direct,
 289                         char *in_mbox, size_t in_mbox_size,
 290                         char *out_mbox, size_t out_mbox_size,
 291                         u8 *p_status);
 292 };
 293
 294 struct mlxsw_bus_info {
 295         const char *device_kind;
 296         const char *device_name;
 297         struct device *dev;
 298         struct {
 299                 u16 major;
 300                 u16 minor;
 301                 u16 subminor;
 302         } fw_rev;
 303         u8 vsd[MLXSW_CMD_BOARDINFO_VSD_LEN];
 304         u8 psid[MLXSW_CMD_BOARDINFO_PSID_LEN];
 305 };
 306
 307 struct mlxsw_hwmon;
 308
 309 #ifdef CONFIG_MLXSW_CORE_HWMON
 310
 311 int mlxsw_hwmon_init(struct mlxsw_core *mlxsw_core,
 312                      const struct mlxsw_bus_info *mlxsw_bus_info,
 313                      struct mlxsw_hwmon **p_hwmon);
 314 void mlxsw_hwmon_fini(struct mlxsw_hwmon *mlxsw_hwmon);
 315
 316 #else
 317
 318 static inline int mlxsw_hwmon_init(struct mlxsw_core *mlxsw_core,
 319                                    const struct mlxsw_bus_info *mlxsw_bus_info,
 320                                    struct mlxsw_hwmon **p_hwmon)
 321 {
 322         return 0;
 323 }
 324
 325 #endif
 326
 327 #endif