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 328