drivers/net/sfc/sfc.h

   1 /*-
   2  * Copyright (c) 2016 Solarflare Communications Inc.
   3  * All rights reserved.
   4  *
   5  * This software was jointly developed between OKTET Labs (under contract
   6  * for Solarflare) and Solarflare Communications, Inc.
   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 notice,
  12  *    this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright notice,
  14  *    this list of conditions and the following disclaimer in the documentation
  15  *    and/or other materials provided with the distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  18  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  19  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  20  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  21  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  22  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  23  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
  24  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  25  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  26  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
  27  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28  */
  29
  30 #ifndef _SFC_H
  31 #define _SFC_H
  32
  33 #include <stdbool.h>
  34
  35 #include <rte_ethdev.h>
  36 #include <rte_kvargs.h>
  37 #include <rte_spinlock.h>
  38
  39 #include "efx.h"
  40
  41 #include "sfc_filter.h"
  42
  43 #ifdef __cplusplus
  44 extern "C" {
  45 #endif
  46
  47 #define SFC_DEV_TO_PCI(eth_dev) \
  48         RTE_DEV_TO_PCI((eth_dev)->device)
  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                       |
  68  * +---------------+            |
  69  * |  CONFIGURING  |------------^
  70  * +---------------+ failed     |
  71  *      |success                |
  72  *      |               +---------------+
  73  *      |               |    CLOSING    |
  74  *      |               +---------------+
  75  *      |                       ^
  76  *      V                       |.dev_close
  77  * +---------------+------------+
  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 };
 131
 132 struct sfc_intr {
 133         efx_intr_type_t                 type;
 134         rte_intr_callback_fn            handler;
 135         boolean_t                       lsc_intr;
 136 };
 137
 138 struct sfc_evq_info;
 139 struct sfc_rxq_info;
 140 struct sfc_txq_info;
 141
 142 struct sfc_port {
 143         unsigned int                    lsc_seq;
 144
 145         uint32_t                        phy_adv_cap_mask;
 146         uint32_t                        phy_adv_cap;
 147
 148         unsigned int                    flow_ctrl;
 149         boolean_t                       flow_ctrl_autoneg;
 150         size_t                          pdu;
 151
 152         boolean_t                       promisc;
 153         boolean_t                       allmulti;
 154
 155         unsigned int                    max_mcast_addrs;
 156         unsigned int                    nb_mcast_addrs;
 157         uint8_t                         *mcast_addrs;
 158
 159         rte_spinlock_t                  mac_stats_lock;
 160         uint64_t                        *mac_stats_buf;
 161         efsys_mem_t                     mac_stats_dma_mem;
 162         boolean_t                       mac_stats_reset_pending;
 163         uint16_t                        mac_stats_update_period_ms;
 164         uint32_t                        mac_stats_update_generation;
 165         boolean_t                       mac_stats_periodic_dma_supported;
 166         uint64_t                        mac_stats_last_request_timestamp;
 167
 168         uint32_t                mac_stats_mask[EFX_MAC_STATS_MASK_NPAGES];
 169 };
 170
 171 /* Adapter private data */
 172 struct sfc_adapter {
 173         /*
 174          * PMD setup and configuration is not thread safe. Since it is not
 175          * performance sensitive, it is better to guarantee thread-safety
 176          * and add device level lock. Adapter control operations which
 177          * change its state should acquire the lock.
 178          */
 179         rte_spinlock_t                  lock;
 180         enum sfc_adapter_state          state;
 181         struct rte_eth_dev              *eth_dev;
 182         struct rte_kvargs               *kvargs;
 183         bool                            debug_init;
 184         int                             socket_id;
 185         efsys_bar_t                     mem_bar;
 186         efx_family_t                    family;
 187         efx_nic_t                       *nic;
 188         rte_spinlock_t                  nic_lock;
 189
 190         struct sfc_mcdi                 mcdi;
 191         struct sfc_intr                 intr;
 192         struct sfc_port                 port;
 193         struct sfc_filter               filter;
 194
 195         unsigned int                    rxq_max;
 196         unsigned int                    txq_max;
 197
 198         unsigned int                    txq_max_entries;
 199
 200         uint32_t                        evq_flags;
 201         unsigned int                    evq_count;
 202         struct sfc_evq_info             *evq_info;
 203
 204         unsigned int                    mgmt_evq_index;
 205         rte_spinlock_t                  mgmt_evq_lock;
 206
 207         unsigned int                    rxq_count;
 208         struct sfc_rxq_info             *rxq_info;
 209
 210         unsigned int                    txq_count;
 211         struct sfc_txq_info             *txq_info;
 212
 213         boolean_t                       tso;
 214
 215         unsigned int                    rss_channels;
 216
 217 #if EFSYS_OPT_RX_SCALE
 218         efx_rx_scale_support_t          rss_support;
 219         efx_rx_hash_support_t           hash_support;
 220         efx_rx_hash_type_t              rss_hash_types;
 221         unsigned int                    rss_tbl[EFX_RSS_TBL_SIZE];
 222         uint8_t                         rss_key[SFC_RSS_KEY_SIZE];
 223 #endif
 224 };
 225
 226 /*
 227  * Add wrapper functions to acquire/release lock to be able to remove or
 228  * change the lock in one place.
 229  */
 230
 231 static inline void
 232 sfc_adapter_lock_init(struct sfc_adapter *sa)
 233 {
 234         rte_spinlock_init(&sa->lock);
 235 }
 236
 237 static inline int
 238 sfc_adapter_is_locked(struct sfc_adapter *sa)
 239 {
 240         return rte_spinlock_is_locked(&sa->lock);
 241 }
 242
 243 static inline void
 244 sfc_adapter_lock(struct sfc_adapter *sa)
 245 {
 246         rte_spinlock_lock(&sa->lock);
 247 }
 248
 249 static inline int
 250 sfc_adapter_trylock(struct sfc_adapter *sa)
 251 {
 252         return rte_spinlock_trylock(&sa->lock);
 253 }
 254
 255 static inline void
 256 sfc_adapter_unlock(struct sfc_adapter *sa)
 257 {
 258         rte_spinlock_unlock(&sa->lock);
 259 }
 260
 261 static inline void
 262 sfc_adapter_lock_fini(__rte_unused struct sfc_adapter *sa)
 263 {
 264         /* Just for symmetry of the API */
 265 }
 266
 267 /** Get the number of milliseconds since boot from the default timer */
 268 static inline uint64_t
 269 sfc_get_system_msecs(void)
 270 {
 271         return rte_get_timer_cycles() * MS_PER_S / rte_get_timer_hz();
 272 }
 273
 274 int sfc_dma_alloc(const struct sfc_adapter *sa, const char *name, uint16_t id,
 275                   size_t len, int socket_id, efsys_mem_t *esmp);
 276 void sfc_dma_free(const struct sfc_adapter *sa, efsys_mem_t *esmp);
 277
 278 int sfc_attach(struct sfc_adapter *sa);
 279 void sfc_detach(struct sfc_adapter *sa);
 280 int sfc_start(struct sfc_adapter *sa);
 281 void sfc_stop(struct sfc_adapter *sa);
 282
 283 int sfc_mcdi_init(struct sfc_adapter *sa);
 284 void sfc_mcdi_fini(struct sfc_adapter *sa);
 285
 286 int sfc_configure(struct sfc_adapter *sa);
 287 void sfc_close(struct sfc_adapter *sa);
 288
 289 int sfc_intr_attach(struct sfc_adapter *sa);
 290 void sfc_intr_detach(struct sfc_adapter *sa);
 291 int sfc_intr_init(struct sfc_adapter *sa);
 292 void sfc_intr_fini(struct sfc_adapter *sa);
 293 int sfc_intr_start(struct sfc_adapter *sa);
 294 void sfc_intr_stop(struct sfc_adapter *sa);
 295
 296 int sfc_port_init(struct sfc_adapter *sa);
 297 void sfc_port_fini(struct sfc_adapter *sa);
 298 int sfc_port_start(struct sfc_adapter *sa);
 299 void sfc_port_stop(struct sfc_adapter *sa);
 300 void sfc_port_link_mode_to_info(efx_link_mode_t link_mode,
 301                                 struct rte_eth_link *link_info);
 302 int sfc_port_update_mac_stats(struct sfc_adapter *sa);
 303 int sfc_port_reset_mac_stats(struct sfc_adapter *sa);
 304 int sfc_set_rx_mode(struct sfc_adapter *sa);
 305
 306
 307 #ifdef __cplusplus
 308 }
 309 #endif
 310
 311 #endif  /* _SFC_H */