drivers/net/sfc/sfc.h

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  *
   3  * Copyright (c) 2016-2018 Solarflare Communications Inc.
   4  * All rights reserved.
   5  *
   6  * This software was jointly developed between OKTET Labs (under contract
   7  * for Solarflare) and Solarflare Communications, Inc.
   8  */
   9
  10 #ifndef _SFC_H
  11 #define _SFC_H
  12
  13 #include <stdbool.h>
  14
  15 #include <rte_pci.h>
  16 #include <rte_bus_pci.h>
  17 #include <rte_ethdev_driver.h>
  18 #include <rte_kvargs.h>
  19 #include <rte_spinlock.h>
  20 #include <rte_atomic.h>
  21
  22 #include "efx.h"
  23
  24 #include "sfc_filter.h"
  25
  26 #ifdef __cplusplus
  27 extern "C" {
  28 #endif
  29
  30 /*
  31  * +---------------+
  32  * | UNINITIALIZED |<-----------+
  33  * +---------------+            |
  34  *      |.eth_dev_init          |.eth_dev_uninit
  35  *      V                       |
  36  * +---------------+------------+
  37  * |  INITIALIZED  |
  38  * +---------------+<-----------<---------------+
  39  *      |.dev_configure         |               |
  40  *      V                       |failed         |
  41  * +---------------+------------+               |
  42  * |  CONFIGURING  |                            |
  43  * +---------------+----+                       |
  44  *      |success        |                       |
  45  *      |               |               +---------------+
  46  *      |               |               |    CLOSING    |
  47  *      |               |               +---------------+
  48  *      |               |                       ^
  49  *      V               |.dev_configure         |
  50  * +---------------+----+                       |.dev_close
  51  * |  CONFIGURED   |----------------------------+
  52  * +---------------+<-----------+
  53  *      |.dev_start             |
  54  *      V                       |
  55  * +---------------+            |
  56  * |   STARTING    |------------^
  57  * +---------------+ failed     |
  58  *      |success                |
  59  *      |               +---------------+
  60  *      |               |   STOPPING    |
  61  *      |               +---------------+
  62  *      |                       ^
  63  *      V                       |.dev_stop
  64  * +---------------+------------+
  65  * |    STARTED    |
  66  * +---------------+
  67  */
  68 enum sfc_adapter_state {
  69         SFC_ADAPTER_UNINITIALIZED = 0,
  70         SFC_ADAPTER_INITIALIZED,
  71         SFC_ADAPTER_CONFIGURING,
  72         SFC_ADAPTER_CONFIGURED,
  73         SFC_ADAPTER_CLOSING,
  74         SFC_ADAPTER_STARTING,
  75         SFC_ADAPTER_STARTED,
  76         SFC_ADAPTER_STOPPING,
  77
  78         SFC_ADAPTER_NSTATES
  79 };
  80
  81 enum sfc_dev_filter_mode {
  82         SFC_DEV_FILTER_MODE_PROMISC = 0,
  83         SFC_DEV_FILTER_MODE_ALLMULTI,
  84
  85         SFC_DEV_FILTER_NMODES
  86 };
  87
  88 enum sfc_mcdi_state {
  89         SFC_MCDI_UNINITIALIZED = 0,
  90         SFC_MCDI_INITIALIZED,
  91         SFC_MCDI_BUSY,
  92         SFC_MCDI_COMPLETED,
  93
  94         SFC_MCDI_NSTATES
  95 };
  96
  97 struct sfc_mcdi {
  98         rte_spinlock_t                  lock;
  99         efsys_mem_t                     mem;
 100         enum sfc_mcdi_state             state;
 101         efx_mcdi_transport_t            transport;
 102         uint32_t                        logtype;
 103         uint32_t                        proxy_handle;
 104         efx_rc_t                        proxy_result;
 105 };
 106
 107 struct sfc_intr {
 108         efx_intr_type_t                 type;
 109         rte_intr_callback_fn            handler;
 110         boolean_t                       lsc_intr;
 111         boolean_t                       rxq_intr;
 112 };
 113
 114 struct sfc_rxq;
 115 struct sfc_txq;
 116
 117 struct sfc_rxq_info;
 118 struct sfc_txq_info;
 119 struct sfc_dp_rx;
 120
 121 struct sfc_port {
 122         unsigned int                    lsc_seq;
 123
 124         uint32_t                        phy_adv_cap_mask;
 125         uint32_t                        phy_adv_cap;
 126
 127         unsigned int                    flow_ctrl;
 128         boolean_t                       flow_ctrl_autoneg;
 129         size_t                          pdu;
 130
 131         /*
 132          * Flow API isolated mode overrides promisc and allmulti settings;
 133          * they won't be applied if isolated mode is active
 134          */
 135         boolean_t                       promisc;
 136         boolean_t                       allmulti;
 137
 138         struct rte_ether_addr           default_mac_addr;
 139
 140         unsigned int                    max_mcast_addrs;
 141         unsigned int                    nb_mcast_addrs;
 142         uint8_t                         *mcast_addrs;
 143
 144         rte_spinlock_t                  mac_stats_lock;
 145         uint64_t                        *mac_stats_buf;
 146         unsigned int                    mac_stats_nb_supported;
 147         efsys_mem_t                     mac_stats_dma_mem;
 148         boolean_t                       mac_stats_reset_pending;
 149         uint16_t                        mac_stats_update_period_ms;
 150         uint32_t                        mac_stats_update_generation;
 151         boolean_t                       mac_stats_periodic_dma_supported;
 152         uint64_t                        mac_stats_last_request_timestamp;
 153
 154         uint32_t                mac_stats_mask[EFX_MAC_STATS_MASK_NPAGES];
 155
 156         uint64_t                        ipackets;
 157 };
 158
 159 struct sfc_rss_hf_rte_to_efx {
 160         uint64_t                        rte;
 161         efx_rx_hash_type_t              efx;
 162 };
 163
 164 struct sfc_rss {
 165         unsigned int                    channels;
 166         efx_rx_scale_context_type_t     context_type;
 167         efx_rx_hash_support_t           hash_support;
 168         efx_rx_hash_alg_t               hash_alg;
 169         unsigned int                    hf_map_nb_entries;
 170         struct sfc_rss_hf_rte_to_efx    *hf_map;
 171
 172         efx_rx_hash_type_t              hash_types;
 173         unsigned int                    tbl[EFX_RSS_TBL_SIZE];
 174         uint8_t                         key[EFX_RSS_KEY_SIZE];
 175 };
 176
 177 /* Adapter private data shared by primary and secondary processes */
 178 struct sfc_adapter_shared {
 179         unsigned int                    rxq_count;
 180         struct sfc_rxq_info             *rxq_info;
 181
 182         unsigned int                    txq_count;
 183         struct sfc_txq_info             *txq_info;
 184
 185         struct sfc_rss                  rss;
 186
 187         boolean_t                       isolated;
 188         uint32_t                        tunnel_encaps;
 189
 190         struct rte_pci_addr             pci_addr;
 191         uint16_t                        port_id;
 192
 193         char                            *dp_rx_name;
 194         char                            *dp_tx_name;
 195 };
 196
 197 /* Adapter process private data */
 198 struct sfc_adapter_priv {
 199         struct sfc_adapter_shared       *shared;
 200         const struct sfc_dp_rx          *dp_rx;
 201         const struct sfc_dp_tx          *dp_tx;
 202         uint32_t                        logtype_main;
 203 };
 204
 205 static inline struct sfc_adapter_priv *
 206 sfc_adapter_priv_by_eth_dev(struct rte_eth_dev *eth_dev)
 207 {
 208         struct sfc_adapter_priv *sap = eth_dev->process_private;
 209
 210         SFC_ASSERT(sap != NULL);
 211         return sap;
 212 }
 213
 214 /* Adapter private data */
 215 struct sfc_adapter {
 216         /*
 217          * It must be the first field of the sfc_adapter structure since
 218          * sfc_adapter is the primary process private data (i.e.  process
 219          * private data plus additional primary process specific data).
 220          */
 221         struct sfc_adapter_priv         priv;
 222
 223         /*
 224          * PMD setup and configuration is not thread safe. Since it is not
 225          * performance sensitive, it is better to guarantee thread-safety
 226          * and add device level lock. Adapter control operations which
 227          * change its state should acquire the lock.
 228          */
 229         rte_spinlock_t                  lock;
 230         enum sfc_adapter_state          state;
 231         struct rte_eth_dev              *eth_dev;
 232         struct rte_kvargs               *kvargs;
 233         int                             socket_id;
 234         efsys_bar_t                     mem_bar;
 235         efx_family_t                    family;
 236         efx_nic_t                       *nic;
 237         rte_spinlock_t                  nic_lock;
 238         rte_atomic32_t                  restart_required;
 239
 240         struct sfc_mcdi                 mcdi;
 241         struct sfc_intr                 intr;
 242         struct sfc_port                 port;
 243         struct sfc_filter               filter;
 244
 245         struct sfc_flow_list            flow_list;
 246
 247         unsigned int                    rxq_max;
 248         unsigned int                    txq_max;
 249
 250         unsigned int                    rxq_max_entries;
 251         unsigned int                    rxq_min_entries;
 252
 253         unsigned int                    txq_max_entries;
 254         unsigned int                    txq_min_entries;
 255
 256         unsigned int                    evq_max_entries;
 257         unsigned int                    evq_min_entries;
 258
 259         uint32_t                        evq_flags;
 260         unsigned int                    evq_count;
 261
 262         unsigned int                    mgmt_evq_index;
 263         /*
 264          * The lock is used to serialise management event queue polling
 265          * which can be done from different context. Also the lock
 266          * guarantees that mgmt_evq_running is preserved while the lock
 267          * is held. It is used to serialise polling and start/stop
 268          * operations.
 269          *
 270          * Locks which may be held when the lock is acquired:
 271          *  - adapter lock, when:
 272          *    - device start/stop to change mgmt_evq_running
 273          *    - any control operations in client side MCDI proxy handling to
 274          *      poll management event queue waiting for proxy response
 275          *  - MCDI lock, when:
 276          *    - any control operations in client side MCDI proxy handling to
 277          *      poll management event queue waiting for proxy response
 278          *
 279          * Locks which are acquired with the lock held:
 280          *  - nic_lock, when:
 281          *    - MC event processing on management event queue polling
 282          *      (e.g. MC REBOOT or BADASSERT events)
 283          */
 284         rte_spinlock_t                  mgmt_evq_lock;
 285         bool                            mgmt_evq_running;
 286         struct sfc_evq                  *mgmt_evq;
 287
 288         struct sfc_rxq                  *rxq_ctrl;
 289         struct sfc_txq                  *txq_ctrl;
 290
 291         boolean_t                       tso;
 292         boolean_t                       tso_encap;
 293
 294         uint32_t                        rxd_wait_timeout_ns;
 295 };
 296
 297 static inline struct sfc_adapter_shared *
 298 sfc_adapter_shared_by_eth_dev(struct rte_eth_dev *eth_dev)
 299 {
 300         struct sfc_adapter_shared *sas = eth_dev->data->dev_private;
 301
 302         return sas;
 303 }
 304
 305 static inline struct sfc_adapter *
 306 sfc_adapter_by_eth_dev(struct rte_eth_dev *eth_dev)
 307 {
 308         struct sfc_adapter_priv *sap = sfc_adapter_priv_by_eth_dev(eth_dev);
 309
 310         SFC_ASSERT(rte_eal_process_type() == RTE_PROC_PRIMARY);
 311
 312         return container_of(sap, struct sfc_adapter, priv);
 313 }
 314
 315 static inline struct sfc_adapter_shared *
 316 sfc_sa2shared(struct sfc_adapter *sa)
 317 {
 318         return sa->priv.shared;
 319 }
 320
 321 /*
 322  * Add wrapper functions to acquire/release lock to be able to remove or
 323  * change the lock in one place.
 324  */
 325
 326 static inline void
 327 sfc_adapter_lock_init(struct sfc_adapter *sa)
 328 {
 329         rte_spinlock_init(&sa->lock);
 330 }
 331
 332 static inline int
 333 sfc_adapter_is_locked(struct sfc_adapter *sa)
 334 {
 335         return rte_spinlock_is_locked(&sa->lock);
 336 }
 337
 338 static inline void
 339 sfc_adapter_lock(struct sfc_adapter *sa)
 340 {
 341         rte_spinlock_lock(&sa->lock);
 342 }
 343
 344 static inline int
 345 sfc_adapter_trylock(struct sfc_adapter *sa)
 346 {
 347         return rte_spinlock_trylock(&sa->lock);
 348 }
 349
 350 static inline void
 351 sfc_adapter_unlock(struct sfc_adapter *sa)
 352 {
 353         rte_spinlock_unlock(&sa->lock);
 354 }
 355
 356 static inline void
 357 sfc_adapter_lock_fini(__rte_unused struct sfc_adapter *sa)
 358 {
 359         /* Just for symmetry of the API */
 360 }
 361
 362 /** Get the number of milliseconds since boot from the default timer */
 363 static inline uint64_t
 364 sfc_get_system_msecs(void)
 365 {
 366         return rte_get_timer_cycles() * MS_PER_S / rte_get_timer_hz();
 367 }
 368
 369 int sfc_dma_alloc(const struct sfc_adapter *sa, const char *name, uint16_t id,
 370                   size_t len, int socket_id, efsys_mem_t *esmp);
 371 void sfc_dma_free(const struct sfc_adapter *sa, efsys_mem_t *esmp);
 372
 373 uint32_t sfc_register_logtype(const struct rte_pci_addr *pci_addr,
 374                               const char *lt_prefix_str,
 375                               uint32_t ll_default);
 376
 377 int sfc_probe(struct sfc_adapter *sa);
 378 void sfc_unprobe(struct sfc_adapter *sa);
 379 int sfc_attach(struct sfc_adapter *sa);
 380 void sfc_detach(struct sfc_adapter *sa);
 381 int sfc_start(struct sfc_adapter *sa);
 382 void sfc_stop(struct sfc_adapter *sa);
 383
 384 void sfc_schedule_restart(struct sfc_adapter *sa);
 385
 386 int sfc_mcdi_init(struct sfc_adapter *sa);
 387 void sfc_mcdi_fini(struct sfc_adapter *sa);
 388
 389 int sfc_configure(struct sfc_adapter *sa);
 390 void sfc_close(struct sfc_adapter *sa);
 391
 392 int sfc_intr_attach(struct sfc_adapter *sa);
 393 void sfc_intr_detach(struct sfc_adapter *sa);
 394 int sfc_intr_configure(struct sfc_adapter *sa);
 395 void sfc_intr_close(struct sfc_adapter *sa);
 396 int sfc_intr_start(struct sfc_adapter *sa);
 397 void sfc_intr_stop(struct sfc_adapter *sa);
 398
 399 int sfc_port_attach(struct sfc_adapter *sa);
 400 void sfc_port_detach(struct sfc_adapter *sa);
 401 int sfc_port_configure(struct sfc_adapter *sa);
 402 void sfc_port_close(struct sfc_adapter *sa);
 403 int sfc_port_start(struct sfc_adapter *sa);
 404 void sfc_port_stop(struct sfc_adapter *sa);
 405 void sfc_port_link_mode_to_info(efx_link_mode_t link_mode,
 406                                 struct rte_eth_link *link_info);
 407 int sfc_port_update_mac_stats(struct sfc_adapter *sa);
 408 int sfc_port_reset_mac_stats(struct sfc_adapter *sa);
 409 int sfc_set_rx_mode(struct sfc_adapter *sa);
 410
 411
 412 #ifdef __cplusplus
 413 }
 414 #endif
 415
 416 #endif  /* _SFC_H */