drivers/net/sfc/sfc.h

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2 *
   3  * Copyright(c) 2019-2021 Xilinx, Inc.
   4  * Copyright(c) 2016-2019 Solarflare Communications Inc.
   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 <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_efx_mcdi.h"
  25 #include "sfc_efx.h"
  26
  27 #include "sfc_debug.h"
  28 #include "sfc_log.h"
  29 #include "sfc_filter.h"
  30 #include "sfc_sriov.h"
  31 #include "sfc_mae.h"
  32 #include "sfc_dp.h"
  33
  34 #ifdef __cplusplus
  35 extern "C" {
  36 #endif
  37
  38 /*
  39  * +---------------+
  40  * | UNINITIALIZED |<-----------+
  41  * +---------------+            |
  42  *      |.eth_dev_init          |.eth_dev_uninit
  43  *      V                       |
  44  * +---------------+------------+
  45  * |  INITIALIZED  |
  46  * +---------------+<-----------<---------------+
  47  *      |.dev_configure         |               |
  48  *      V                       |failed         |
  49  * +---------------+------------+               |
  50  * |  CONFIGURING  |                            |
  51  * +---------------+----+                       |
  52  *      |success        |                       |
  53  *      |               |               +---------------+
  54  *      |               |               |    CLOSING    |
  55  *      |               |               +---------------+
  56  *      |               |                       ^
  57  *      V               |.dev_configure         |
  58  * +---------------+----+                       |.dev_close
  59  * |  CONFIGURED   |----------------------------+
  60  * +---------------+<-----------+
  61  *      |.dev_start             |
  62  *      V                       |
  63  * +---------------+            |
  64  * |   STARTING    |------------^
  65  * +---------------+ failed     |
  66  *      |success                |
  67  *      |               +---------------+
  68  *      |               |   STOPPING    |
  69  *      |               +---------------+
  70  *      |                       ^
  71  *      V                       |.dev_stop
  72  * +---------------+------------+
  73  * |    STARTED    |
  74  * +---------------+
  75  */
  76 enum sfc_adapter_state {
  77         SFC_ADAPTER_UNINITIALIZED = 0,
  78         SFC_ADAPTER_INITIALIZED,
  79         SFC_ADAPTER_CONFIGURING,
  80         SFC_ADAPTER_CONFIGURED,
  81         SFC_ADAPTER_CLOSING,
  82         SFC_ADAPTER_STARTING,
  83         SFC_ADAPTER_STARTED,
  84         SFC_ADAPTER_STOPPING,
  85
  86         SFC_ADAPTER_NSTATES
  87 };
  88
  89 enum sfc_dev_filter_mode {
  90         SFC_DEV_FILTER_MODE_PROMISC = 0,
  91         SFC_DEV_FILTER_MODE_ALLMULTI,
  92
  93         SFC_DEV_FILTER_NMODES
  94 };
  95
  96 struct sfc_intr {
  97         efx_intr_type_t                 type;
  98         rte_intr_callback_fn            handler;
  99         boolean_t                       lsc_intr;
 100         boolean_t                       rxq_intr;
 101 };
 102
 103 struct sfc_rxq;
 104 struct sfc_txq;
 105
 106 struct sfc_rxq_info;
 107 struct sfc_txq_info;
 108 struct sfc_dp_rx;
 109
 110 struct sfc_port {
 111         unsigned int                    lsc_seq;
 112
 113         uint32_t                        phy_adv_cap_mask;
 114         uint32_t                        phy_adv_cap;
 115
 116         unsigned int                    flow_ctrl;
 117         boolean_t                       flow_ctrl_autoneg;
 118         size_t                          pdu;
 119
 120         /*
 121          * Flow API isolated mode overrides promisc and allmulti settings;
 122          * they won't be applied if isolated mode is active
 123          */
 124         boolean_t                       promisc;
 125         boolean_t                       allmulti;
 126
 127         struct rte_ether_addr           default_mac_addr;
 128
 129         unsigned int                    max_mcast_addrs;
 130         unsigned int                    nb_mcast_addrs;
 131         uint8_t                         *mcast_addrs;
 132
 133         rte_spinlock_t                  mac_stats_lock;
 134         uint64_t                        *mac_stats_buf;
 135         unsigned int                    mac_stats_nb_supported;
 136         efsys_mem_t                     mac_stats_dma_mem;
 137         boolean_t                       mac_stats_reset_pending;
 138         uint16_t                        mac_stats_update_period_ms;
 139         uint32_t                        mac_stats_update_generation;
 140         boolean_t                       mac_stats_periodic_dma_supported;
 141         uint64_t                        mac_stats_last_request_timestamp;
 142
 143         uint32_t                mac_stats_mask[EFX_MAC_STATS_MASK_NPAGES];
 144
 145         uint64_t                        ipackets;
 146 };
 147
 148 struct sfc_rss_hf_rte_to_efx {
 149         uint64_t                        rte;
 150         efx_rx_hash_type_t              efx;
 151 };
 152
 153 struct sfc_rss {
 154         unsigned int                    channels;
 155         efx_rx_scale_context_type_t     context_type;
 156         efx_rx_hash_support_t           hash_support;
 157         efx_rx_hash_alg_t               hash_alg;
 158         unsigned int                    hf_map_nb_entries;
 159         struct sfc_rss_hf_rte_to_efx    *hf_map;
 160
 161         efx_rx_hash_type_t              hash_types;
 162         unsigned int                    tbl[EFX_RSS_TBL_SIZE];
 163         uint8_t                         key[EFX_RSS_KEY_SIZE];
 164
 165         uint32_t                        dummy_rss_context;
 166 };
 167
 168 /* Adapter private data shared by primary and secondary processes */
 169 struct sfc_adapter_shared {
 170         unsigned int                    rxq_count;
 171         struct sfc_rxq_info             *rxq_info;
 172         unsigned int                    ethdev_rxq_count;
 173
 174         unsigned int                    txq_count;
 175         struct sfc_txq_info             *txq_info;
 176         unsigned int                    ethdev_txq_count;
 177
 178         struct sfc_rss                  rss;
 179
 180         boolean_t                       isolated;
 181         uint32_t                        tunnel_encaps;
 182
 183         char                            log_prefix[SFC_LOG_PREFIX_MAX];
 184         struct rte_pci_addr             pci_addr;
 185         uint16_t                        port_id;
 186
 187         char                            *dp_rx_name;
 188         char                            *dp_tx_name;
 189
 190         bool                            counters_rxq_allocated;
 191 };
 192
 193 /* Adapter process private data */
 194 struct sfc_adapter_priv {
 195         struct sfc_adapter_shared       *shared;
 196         const struct sfc_dp_rx          *dp_rx;
 197         const struct sfc_dp_tx          *dp_tx;
 198         uint32_t                        logtype_main;
 199 };
 200
 201 static inline struct sfc_adapter_priv *
 202 sfc_adapter_priv_by_eth_dev(struct rte_eth_dev *eth_dev)
 203 {
 204         struct sfc_adapter_priv *sap = eth_dev->process_private;
 205
 206         SFC_ASSERT(sap != NULL);
 207         return sap;
 208 }
 209
 210 /* RxQ dedicated for counters (counter only RxQ) data */
 211 struct sfc_counter_rxq {
 212         unsigned int                    state;
 213 #define SFC_COUNTER_RXQ_ATTACHED                0x1
 214 #define SFC_COUNTER_RXQ_INITIALIZED             0x2
 215         sfc_sw_index_t                  sw_index;
 216         struct rte_mempool              *mp;
 217 };
 218
 219 /* Adapter private data */
 220 struct sfc_adapter {
 221         /*
 222          * It must be the first field of the sfc_adapter structure since
 223          * sfc_adapter is the primary process private data (i.e.  process
 224          * private data plus additional primary process specific data).
 225          */
 226         struct sfc_adapter_priv         priv;
 227
 228         /*
 229          * PMD setup and configuration is not thread safe. Since it is not
 230          * performance sensitive, it is better to guarantee thread-safety
 231          * and add device level lock. Adapter control operations which
 232          * change its state should acquire the lock.
 233          */
 234         rte_spinlock_t                  lock;
 235         enum sfc_adapter_state          state;
 236         struct rte_eth_dev              *eth_dev;
 237         struct rte_kvargs               *kvargs;
 238         int                             socket_id;
 239         efsys_bar_t                     mem_bar;
 240         /* Function control window offset */
 241         efsys_dma_addr_t                fcw_offset;
 242         efx_family_t                    family;
 243         efx_nic_t                       *nic;
 244         rte_spinlock_t                  nic_lock;
 245         rte_atomic32_t                  restart_required;
 246
 247         struct sfc_efx_mcdi             mcdi;
 248         struct sfc_sriov                sriov;
 249         struct sfc_intr                 intr;
 250         struct sfc_port                 port;
 251         struct sfc_filter               filter;
 252         struct sfc_mae                  mae;
 253
 254         struct sfc_flow_list            flow_list;
 255
 256         unsigned int                    rxq_max;
 257         unsigned int                    txq_max;
 258
 259         unsigned int                    rxq_max_entries;
 260         unsigned int                    rxq_min_entries;
 261
 262         unsigned int                    txq_max_entries;
 263         unsigned int                    txq_min_entries;
 264
 265         unsigned int                    evq_max_entries;
 266         unsigned int                    evq_min_entries;
 267
 268         uint32_t                        evq_flags;
 269         unsigned int                    evq_count;
 270
 271         unsigned int                    mgmt_evq_index;
 272         /*
 273          * The lock is used to serialise management event queue polling
 274          * which can be done from different context. Also the lock
 275          * guarantees that mgmt_evq_running is preserved while the lock
 276          * is held. It is used to serialise polling and start/stop
 277          * operations.
 278          *
 279          * Locks which may be held when the lock is acquired:
 280          *  - adapter lock, when:
 281          *    - device start/stop to change mgmt_evq_running
 282          *    - any control operations in client side MCDI proxy handling to
 283          *      poll management event queue waiting for proxy response
 284          *  - MCDI lock, when:
 285          *    - any control operations in client side MCDI proxy handling to
 286          *      poll management event queue waiting for proxy response
 287          *
 288          * Locks which are acquired with the lock held:
 289          *  - nic_lock, when:
 290          *    - MC event processing on management event queue polling
 291          *      (e.g. MC REBOOT or BADASSERT events)
 292          */
 293         rte_spinlock_t                  mgmt_evq_lock;
 294         bool                            mgmt_evq_running;
 295         struct sfc_evq                  *mgmt_evq;
 296
 297         struct sfc_counter_rxq          counter_rxq;
 298
 299         struct sfc_rxq                  *rxq_ctrl;
 300         struct sfc_txq                  *txq_ctrl;
 301
 302         boolean_t                       tso;
 303         boolean_t                       tso_encap;
 304
 305         uint32_t                        rxd_wait_timeout_ns;
 306 };
 307
 308 static inline struct sfc_adapter_shared *
 309 sfc_adapter_shared_by_eth_dev(struct rte_eth_dev *eth_dev)
 310 {
 311         struct sfc_adapter_shared *sas = eth_dev->data->dev_private;
 312
 313         return sas;
 314 }
 315
 316 static inline struct sfc_adapter *
 317 sfc_adapter_by_eth_dev(struct rte_eth_dev *eth_dev)
 318 {
 319         struct sfc_adapter_priv *sap = sfc_adapter_priv_by_eth_dev(eth_dev);
 320
 321         SFC_ASSERT(rte_eal_process_type() == RTE_PROC_PRIMARY);
 322
 323         return container_of(sap, struct sfc_adapter, priv);
 324 }
 325
 326 static inline struct sfc_adapter_shared *
 327 sfc_sa2shared(struct sfc_adapter *sa)
 328 {
 329         return sa->priv.shared;
 330 }
 331
 332 /*
 333  * Add wrapper functions to acquire/release lock to be able to remove or
 334  * change the lock in one place.
 335  */
 336
 337 static inline void
 338 sfc_adapter_lock_init(struct sfc_adapter *sa)
 339 {
 340         rte_spinlock_init(&sa->lock);
 341 }
 342
 343 static inline int
 344 sfc_adapter_is_locked(struct sfc_adapter *sa)
 345 {
 346         return rte_spinlock_is_locked(&sa->lock);
 347 }
 348
 349 static inline void
 350 sfc_adapter_lock(struct sfc_adapter *sa)
 351 {
 352         rte_spinlock_lock(&sa->lock);
 353 }
 354
 355 static inline int
 356 sfc_adapter_trylock(struct sfc_adapter *sa)
 357 {
 358         return rte_spinlock_trylock(&sa->lock);
 359 }
 360
 361 static inline void
 362 sfc_adapter_unlock(struct sfc_adapter *sa)
 363 {
 364         rte_spinlock_unlock(&sa->lock);
 365 }
 366
 367 static inline void
 368 sfc_adapter_lock_fini(__rte_unused struct sfc_adapter *sa)
 369 {
 370         /* Just for symmetry of the API */
 371 }
 372
 373 static inline unsigned int
 374 sfc_nb_counter_rxq(const struct sfc_adapter_shared *sas)
 375 {
 376         return sas->counters_rxq_allocated ? 1 : 0;
 377 }
 378
 379 /** Get the number of milliseconds since boot from the default timer */
 380 static inline uint64_t
 381 sfc_get_system_msecs(void)
 382 {
 383         return rte_get_timer_cycles() * MS_PER_S / rte_get_timer_hz();
 384 }
 385
 386 int sfc_dma_alloc(const struct sfc_adapter *sa, const char *name, uint16_t id,
 387                   size_t len, int socket_id, efsys_mem_t *esmp);
 388 void sfc_dma_free(const struct sfc_adapter *sa, efsys_mem_t *esmp);
 389
 390 uint32_t sfc_register_logtype(const struct rte_pci_addr *pci_addr,
 391                               const char *lt_prefix_str,
 392                               uint32_t ll_default);
 393
 394 int sfc_probe(struct sfc_adapter *sa);
 395 void sfc_unprobe(struct sfc_adapter *sa);
 396 int sfc_attach(struct sfc_adapter *sa);
 397 void sfc_detach(struct sfc_adapter *sa);
 398 int sfc_start(struct sfc_adapter *sa);
 399 void sfc_stop(struct sfc_adapter *sa);
 400
 401 void sfc_schedule_restart(struct sfc_adapter *sa);
 402
 403 int sfc_mcdi_init(struct sfc_adapter *sa);
 404 void sfc_mcdi_fini(struct sfc_adapter *sa);
 405
 406 int sfc_configure(struct sfc_adapter *sa);
 407 void sfc_close(struct sfc_adapter *sa);
 408
 409 int sfc_intr_attach(struct sfc_adapter *sa);
 410 void sfc_intr_detach(struct sfc_adapter *sa);
 411 int sfc_intr_configure(struct sfc_adapter *sa);
 412 void sfc_intr_close(struct sfc_adapter *sa);
 413 int sfc_intr_start(struct sfc_adapter *sa);
 414 void sfc_intr_stop(struct sfc_adapter *sa);
 415
 416 int sfc_port_attach(struct sfc_adapter *sa);
 417 void sfc_port_detach(struct sfc_adapter *sa);
 418 int sfc_port_configure(struct sfc_adapter *sa);
 419 void sfc_port_close(struct sfc_adapter *sa);
 420 int sfc_port_start(struct sfc_adapter *sa);
 421 void sfc_port_stop(struct sfc_adapter *sa);
 422 void sfc_port_link_mode_to_info(efx_link_mode_t link_mode,
 423                                 struct rte_eth_link *link_info);
 424 int sfc_port_update_mac_stats(struct sfc_adapter *sa);
 425 int sfc_port_reset_mac_stats(struct sfc_adapter *sa);
 426 int sfc_set_rx_mode(struct sfc_adapter *sa);
 427 int sfc_set_rx_mode_unchecked(struct sfc_adapter *sa);
 428
 429 struct sfc_hw_switch_id;
 430
 431 int sfc_hw_switch_id_init(struct sfc_adapter *sa,
 432                           struct sfc_hw_switch_id **idp);
 433 void sfc_hw_switch_id_fini(struct sfc_adapter *sa,
 434                            struct sfc_hw_switch_id *idp);
 435 bool sfc_hw_switch_ids_equal(const struct sfc_hw_switch_id *left,
 436                              const struct sfc_hw_switch_id *right);
 437
 438 #ifdef __cplusplus
 439 }
 440 #endif
 441
 442 #endif  /* _SFC_H */