drivers/net/sfc/sfc.h

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  * Copyright (c) 2016-2017 Solarflare Communications Inc.
   5  * All rights reserved.
   6  *
   7  * This software was jointly developed between OKTET Labs (under contract
   8  * for Solarflare) and Solarflare Communications, Inc.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions are met:
  12  *
  13  * 1. Redistributions of source code must retain the above copyright notice,
  14  *    this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright notice,
  16  *    this list of conditions and the following disclaimer in the documentation
  17  *    and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  20  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  21  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  23  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  24  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  25  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
  26  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  27  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  28  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
  29  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #ifndef _SFC_H
  33 #define _SFC_H
  34
  35 #include <stdbool.h>
  36
  37 #include <rte_pci.h>
  38 #include <rte_ethdev.h>
  39 #include <rte_kvargs.h>
  40 #include <rte_spinlock.h>
  41
  42 #include "efx.h"
  43
  44 #include "sfc_filter.h"
  45
  46 #ifdef __cplusplus
  47 extern "C" {
  48 #endif
  49
  50 #if EFSYS_OPT_RX_SCALE
  51 /** RSS key length (bytes) */
  52 #define SFC_RSS_KEY_SIZE        40
  53 /** RSS hash offloads mask */
  54 #define SFC_RSS_OFFLOADS        (ETH_RSS_IP | ETH_RSS_TCP)
  55 #endif
  56
  57 /*
  58  * +---------------+
  59  * | UNINITIALIZED |<-----------+
  60  * +---------------+            |
  61  *      |.eth_dev_init          |.eth_dev_uninit
  62  *      V                       |
  63  * +---------------+------------+
  64  * |  INITIALIZED  |
  65  * +---------------+<-----------<---------------+
  66  *      |.dev_configure         |               |
  67  *      V                       |failed         |
  68  * +---------------+------------+               |
  69  * |  CONFIGURING  |                            |
  70  * +---------------+----+                       |
  71  *      |success        |                       |
  72  *      |               |               +---------------+
  73  *      |               |               |    CLOSING    |
  74  *      |               |               +---------------+
  75  *      |               |                       ^
  76  *      V               |.dev_configure         |
  77  * +---------------+----+                       |.dev_close
  78  * |  CONFIGURED   |----------------------------+
  79  * +---------------+<-----------+
  80  *      |.dev_start             |
  81  *      V                       |
  82  * +---------------+            |
  83  * |   STARTING    |------------^
  84  * +---------------+ failed     |
  85  *      |success                |
  86  *      |               +---------------+
  87  *      |               |   STOPPING    |
  88  *      |               +---------------+
  89  *      |                       ^
  90  *      V                       |.dev_stop
  91  * +---------------+------------+
  92  * |    STARTED    |
  93  * +---------------+
  94  */
  95 enum sfc_adapter_state {
  96         SFC_ADAPTER_UNINITIALIZED = 0,
  97         SFC_ADAPTER_INITIALIZED,
  98         SFC_ADAPTER_CONFIGURING,
  99         SFC_ADAPTER_CONFIGURED,
 100         SFC_ADAPTER_CLOSING,
 101         SFC_ADAPTER_STARTING,
 102         SFC_ADAPTER_STARTED,
 103         SFC_ADAPTER_STOPPING,
 104
 105         SFC_ADAPTER_NSTATES
 106 };
 107
 108 enum sfc_dev_filter_mode {
 109         SFC_DEV_FILTER_MODE_PROMISC = 0,
 110         SFC_DEV_FILTER_MODE_ALLMULTI,
 111
 112         SFC_DEV_FILTER_NMODES
 113 };
 114
 115 enum sfc_mcdi_state {
 116         SFC_MCDI_UNINITIALIZED = 0,
 117         SFC_MCDI_INITIALIZED,
 118         SFC_MCDI_BUSY,
 119         SFC_MCDI_COMPLETED,
 120
 121         SFC_MCDI_NSTATES
 122 };
 123
 124 struct sfc_mcdi {
 125         rte_spinlock_t                  lock;
 126         efsys_mem_t                     mem;
 127         enum sfc_mcdi_state             state;
 128         efx_mcdi_transport_t            transport;
 129         bool                            logging;
 130         uint32_t                        proxy_handle;
 131         efx_rc_t                        proxy_result;
 132 };
 133
 134 struct sfc_intr {
 135         efx_intr_type_t                 type;
 136         rte_intr_callback_fn            handler;
 137         boolean_t                       lsc_intr;
 138 };
 139
 140 struct sfc_rxq_info;
 141 struct sfc_txq_info;
 142 struct sfc_dp_rx;
 143
 144 struct sfc_port {
 145         unsigned int                    lsc_seq;
 146
 147         uint32_t                        phy_adv_cap_mask;
 148         uint32_t                        phy_adv_cap;
 149
 150         unsigned int                    flow_ctrl;
 151         boolean_t                       flow_ctrl_autoneg;
 152         size_t                          pdu;
 153
 154         /*
 155          * Flow API isolated mode overrides promisc and allmulti settings;
 156          * they won't be applied if isolated mode is active
 157          */
 158         boolean_t                       isolated;
 159         boolean_t                       promisc;
 160         boolean_t                       allmulti;
 161
 162         unsigned int                    max_mcast_addrs;
 163         unsigned int                    nb_mcast_addrs;
 164         uint8_t                         *mcast_addrs;
 165
 166         rte_spinlock_t                  mac_stats_lock;
 167         uint64_t                        *mac_stats_buf;
 168         unsigned int                    mac_stats_nb_supported;
 169         efsys_mem_t                     mac_stats_dma_mem;
 170         boolean_t                       mac_stats_reset_pending;
 171         uint16_t                        mac_stats_update_period_ms;
 172         uint32_t                        mac_stats_update_generation;
 173         boolean_t                       mac_stats_periodic_dma_supported;
 174         uint64_t                        mac_stats_last_request_timestamp;
 175
 176         uint32_t                mac_stats_mask[EFX_MAC_STATS_MASK_NPAGES];
 177 };
 178
 179 /* Adapter private data */
 180 struct sfc_adapter {
 181         /*
 182          * PMD setup and configuration is not thread safe. Since it is not
 183          * performance sensitive, it is better to guarantee thread-safety
 184          * and add device level lock. Adapter control operations which
 185          * change its state should acquire the lock.
 186          */
 187         rte_spinlock_t                  lock;
 188         enum sfc_adapter_state          state;
 189         struct rte_pci_addr             pci_addr;
 190         uint16_t                        port_id;
 191         struct rte_eth_dev              *eth_dev;
 192         struct rte_kvargs               *kvargs;
 193         bool                            debug_init;
 194         int                             socket_id;
 195         efsys_bar_t                     mem_bar;
 196         efx_family_t                    family;
 197         efx_nic_t                       *nic;
 198         rte_spinlock_t                  nic_lock;
 199
 200         struct sfc_mcdi                 mcdi;
 201         struct sfc_intr                 intr;
 202         struct sfc_port                 port;
 203         struct sfc_filter               filter;
 204
 205         unsigned int                    rxq_max;
 206         unsigned int                    txq_max;
 207
 208         unsigned int                    txq_max_entries;
 209
 210         uint32_t                        evq_flags;
 211         unsigned int                    evq_count;
 212
 213         unsigned int                    mgmt_evq_index;
 214         rte_spinlock_t                  mgmt_evq_lock;
 215         struct sfc_evq                  *mgmt_evq;
 216
 217         unsigned int                    rxq_count;
 218         struct sfc_rxq_info             *rxq_info;
 219
 220         unsigned int                    txq_count;
 221         struct sfc_txq_info             *txq_info;
 222
 223         boolean_t                       tso;
 224
 225         unsigned int                    rss_channels;
 226
 227 #if EFSYS_OPT_RX_SCALE
 228         efx_rx_scale_support_t          rss_support;
 229         efx_rx_hash_support_t           hash_support;
 230         efx_rx_hash_type_t              rss_hash_types;
 231         unsigned int                    rss_tbl[EFX_RSS_TBL_SIZE];
 232         uint8_t                         rss_key[SFC_RSS_KEY_SIZE];
 233 #endif
 234
 235         /*
 236          * Shared memory copy of the Rx datapath name to be used by
 237          * the secondary process to find Rx datapath to be used.
 238          */
 239         char                            *dp_rx_name;
 240         const struct sfc_dp_rx          *dp_rx;
 241
 242         /*
 243          * Shared memory copy of the Tx datapath name to be used by
 244          * the secondary process to find Rx datapath to be used.
 245          */
 246         char                            *dp_tx_name;
 247         const struct sfc_dp_tx          *dp_tx;
 248 };
 249
 250 /*
 251  * Add wrapper functions to acquire/release lock to be able to remove or
 252  * change the lock in one place.
 253  */
 254
 255 static inline void
 256 sfc_adapter_lock_init(struct sfc_adapter *sa)
 257 {
 258         rte_spinlock_init(&sa->lock);
 259 }
 260
 261 static inline int
 262 sfc_adapter_is_locked(struct sfc_adapter *sa)
 263 {
 264         return rte_spinlock_is_locked(&sa->lock);
 265 }
 266
 267 static inline void
 268 sfc_adapter_lock(struct sfc_adapter *sa)
 269 {
 270         rte_spinlock_lock(&sa->lock);
 271 }
 272
 273 static inline int
 274 sfc_adapter_trylock(struct sfc_adapter *sa)
 275 {
 276         return rte_spinlock_trylock(&sa->lock);
 277 }
 278
 279 static inline void
 280 sfc_adapter_unlock(struct sfc_adapter *sa)
 281 {
 282         rte_spinlock_unlock(&sa->lock);
 283 }
 284
 285 static inline void
 286 sfc_adapter_lock_fini(__rte_unused struct sfc_adapter *sa)
 287 {
 288         /* Just for symmetry of the API */
 289 }
 290
 291 /** Get the number of milliseconds since boot from the default timer */
 292 static inline uint64_t
 293 sfc_get_system_msecs(void)
 294 {
 295         return rte_get_timer_cycles() * MS_PER_S / rte_get_timer_hz();
 296 }
 297
 298 int sfc_dma_alloc(const struct sfc_adapter *sa, const char *name, uint16_t id,
 299                   size_t len, int socket_id, efsys_mem_t *esmp);
 300 void sfc_dma_free(const struct sfc_adapter *sa, efsys_mem_t *esmp);
 301
 302 int sfc_probe(struct sfc_adapter *sa);
 303 void sfc_unprobe(struct sfc_adapter *sa);
 304 int sfc_attach(struct sfc_adapter *sa);
 305 void sfc_detach(struct sfc_adapter *sa);
 306 int sfc_start(struct sfc_adapter *sa);
 307 void sfc_stop(struct sfc_adapter *sa);
 308
 309 int sfc_mcdi_init(struct sfc_adapter *sa);
 310 void sfc_mcdi_fini(struct sfc_adapter *sa);
 311
 312 int sfc_configure(struct sfc_adapter *sa);
 313 void sfc_close(struct sfc_adapter *sa);
 314
 315 int sfc_intr_attach(struct sfc_adapter *sa);
 316 void sfc_intr_detach(struct sfc_adapter *sa);
 317 int sfc_intr_configure(struct sfc_adapter *sa);
 318 void sfc_intr_close(struct sfc_adapter *sa);
 319 int sfc_intr_start(struct sfc_adapter *sa);
 320 void sfc_intr_stop(struct sfc_adapter *sa);
 321
 322 int sfc_port_attach(struct sfc_adapter *sa);
 323 void sfc_port_detach(struct sfc_adapter *sa);
 324 int sfc_port_configure(struct sfc_adapter *sa);
 325 void sfc_port_close(struct sfc_adapter *sa);
 326 int sfc_port_start(struct sfc_adapter *sa);
 327 void sfc_port_stop(struct sfc_adapter *sa);
 328 void sfc_port_link_mode_to_info(efx_link_mode_t link_mode,
 329                                 struct rte_eth_link *link_info);
 330 int sfc_port_update_mac_stats(struct sfc_adapter *sa);
 331 int sfc_port_reset_mac_stats(struct sfc_adapter *sa);
 332 int sfc_set_rx_mode(struct sfc_adapter *sa);
 333
 334
 335 #ifdef __cplusplus
 336 }
 337 #endif
 338
 339 #endif  /* _SFC_H */