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_ethdev.h>
  38 #include <rte_kvargs.h>
  39 #include <rte_spinlock.h>
  40
  41 #include "efx.h"
  42
  43 #include "sfc_filter.h"
  44
  45 #ifdef __cplusplus
  46 extern "C" {
  47 #endif
  48
  49 #define SFC_DEV_TO_PCI(eth_dev) \
  50         RTE_DEV_TO_PCI((eth_dev)->device)
  51
  52 #if EFSYS_OPT_RX_SCALE
  53 /** RSS key length (bytes) */
  54 #define SFC_RSS_KEY_SIZE        40
  55 /** RSS hash offloads mask */
  56 #define SFC_RSS_OFFLOADS        (ETH_RSS_IP | ETH_RSS_TCP)
  57 #endif
  58
  59 /*
  60  * +---------------+
  61  * | UNINITIALIZED |<-----------+
  62  * +---------------+            |
  63  *      |.eth_dev_init          |.eth_dev_uninit
  64  *      V                       |
  65  * +---------------+------------+
  66  * |  INITIALIZED  |
  67  * +---------------+<-----------+
  68  *      |.dev_configure         |
  69  *      V                       |
  70  * +---------------+            |
  71  * |  CONFIGURING  |------------^
  72  * +---------------+ failed     |
  73  *      |success                |
  74  *      |               +---------------+
  75  *      |               |    CLOSING    |
  76  *      |               +---------------+
  77  *      |                       ^
  78  *      V                       |.dev_close
  79  * +---------------+------------+
  80  * |  CONFIGURED   |
  81  * +---------------+<-----------+
  82  *      |.dev_start             |
  83  *      V                       |
  84  * +---------------+            |
  85  * |   STARTING    |------------^
  86  * +---------------+ failed     |
  87  *      |success                |
  88  *      |               +---------------+
  89  *      |               |   STOPPING    |
  90  *      |               +---------------+
  91  *      |                       ^
  92  *      V                       |.dev_stop
  93  * +---------------+------------+
  94  * |    STARTED    |
  95  * +---------------+
  96  */
  97 enum sfc_adapter_state {
  98         SFC_ADAPTER_UNINITIALIZED = 0,
  99         SFC_ADAPTER_INITIALIZED,
 100         SFC_ADAPTER_CONFIGURING,
 101         SFC_ADAPTER_CONFIGURED,
 102         SFC_ADAPTER_CLOSING,
 103         SFC_ADAPTER_STARTING,
 104         SFC_ADAPTER_STARTED,
 105         SFC_ADAPTER_STOPPING,
 106
 107         SFC_ADAPTER_NSTATES
 108 };
 109
 110 enum sfc_dev_filter_mode {
 111         SFC_DEV_FILTER_MODE_PROMISC = 0,
 112         SFC_DEV_FILTER_MODE_ALLMULTI,
 113
 114         SFC_DEV_FILTER_NMODES
 115 };
 116
 117 enum sfc_mcdi_state {
 118         SFC_MCDI_UNINITIALIZED = 0,
 119         SFC_MCDI_INITIALIZED,
 120         SFC_MCDI_BUSY,
 121         SFC_MCDI_COMPLETED,
 122
 123         SFC_MCDI_NSTATES
 124 };
 125
 126 struct sfc_mcdi {
 127         rte_spinlock_t                  lock;
 128         efsys_mem_t                     mem;
 129         enum sfc_mcdi_state             state;
 130         efx_mcdi_transport_t            transport;
 131         bool                            logging;
 132         uint32_t                        proxy_handle;
 133         efx_rc_t                        proxy_result;
 134 };
 135
 136 struct sfc_intr {
 137         efx_intr_type_t                 type;
 138         rte_intr_callback_fn            handler;
 139         boolean_t                       lsc_intr;
 140 };
 141
 142 struct sfc_evq_info;
 143 struct sfc_rxq_info;
 144 struct sfc_txq_info;
 145 struct sfc_dp_rx;
 146
 147 struct sfc_port {
 148         unsigned int                    lsc_seq;
 149
 150         uint32_t                        phy_adv_cap_mask;
 151         uint32_t                        phy_adv_cap;
 152
 153         unsigned int                    flow_ctrl;
 154         boolean_t                       flow_ctrl_autoneg;
 155         size_t                          pdu;
 156
 157         boolean_t                       promisc;
 158         boolean_t                       allmulti;
 159
 160         unsigned int                    max_mcast_addrs;
 161         unsigned int                    nb_mcast_addrs;
 162         uint8_t                         *mcast_addrs;
 163
 164         rte_spinlock_t                  mac_stats_lock;
 165         uint64_t                        *mac_stats_buf;
 166         efsys_mem_t                     mac_stats_dma_mem;
 167         boolean_t                       mac_stats_reset_pending;
 168         uint16_t                        mac_stats_update_period_ms;
 169         uint32_t                        mac_stats_update_generation;
 170         boolean_t                       mac_stats_periodic_dma_supported;
 171         uint64_t                        mac_stats_last_request_timestamp;
 172
 173         uint32_t                mac_stats_mask[EFX_MAC_STATS_MASK_NPAGES];
 174 };
 175
 176 /* Adapter private data */
 177 struct sfc_adapter {
 178         /*
 179          * PMD setup and configuration is not thread safe. Since it is not
 180          * performance sensitive, it is better to guarantee thread-safety
 181          * and add device level lock. Adapter control operations which
 182          * change its state should acquire the lock.
 183          */
 184         rte_spinlock_t                  lock;
 185         enum sfc_adapter_state          state;
 186         struct rte_eth_dev              *eth_dev;
 187         struct rte_kvargs               *kvargs;
 188         bool                            debug_init;
 189         int                             socket_id;
 190         efsys_bar_t                     mem_bar;
 191         efx_family_t                    family;
 192         efx_nic_t                       *nic;
 193         rte_spinlock_t                  nic_lock;
 194
 195         struct sfc_mcdi                 mcdi;
 196         struct sfc_intr                 intr;
 197         struct sfc_port                 port;
 198         struct sfc_filter               filter;
 199
 200         unsigned int                    rxq_max;
 201         unsigned int                    txq_max;
 202
 203         unsigned int                    txq_max_entries;
 204
 205         uint32_t                        evq_flags;
 206         unsigned int                    evq_count;
 207         struct sfc_evq_info             *evq_info;
 208
 209         unsigned int                    mgmt_evq_index;
 210         rte_spinlock_t                  mgmt_evq_lock;
 211
 212         unsigned int                    rxq_count;
 213         struct sfc_rxq_info             *rxq_info;
 214
 215         unsigned int                    txq_count;
 216         struct sfc_txq_info             *txq_info;
 217
 218         boolean_t                       tso;
 219
 220         unsigned int                    rss_channels;
 221
 222 #if EFSYS_OPT_RX_SCALE
 223         efx_rx_scale_support_t          rss_support;
 224         efx_rx_hash_support_t           hash_support;
 225         efx_rx_hash_type_t              rss_hash_types;
 226         unsigned int                    rss_tbl[EFX_RSS_TBL_SIZE];
 227         uint8_t                         rss_key[SFC_RSS_KEY_SIZE];
 228 #endif
 229
 230         const struct sfc_dp_rx          *dp_rx;
 231 };
 232
 233 /*
 234  * Add wrapper functions to acquire/release lock to be able to remove or
 235  * change the lock in one place.
 236  */
 237
 238 static inline void
 239 sfc_adapter_lock_init(struct sfc_adapter *sa)
 240 {
 241         rte_spinlock_init(&sa->lock);
 242 }
 243
 244 static inline int
 245 sfc_adapter_is_locked(struct sfc_adapter *sa)
 246 {
 247         return rte_spinlock_is_locked(&sa->lock);
 248 }
 249
 250 static inline void
 251 sfc_adapter_lock(struct sfc_adapter *sa)
 252 {
 253         rte_spinlock_lock(&sa->lock);
 254 }
 255
 256 static inline int
 257 sfc_adapter_trylock(struct sfc_adapter *sa)
 258 {
 259         return rte_spinlock_trylock(&sa->lock);
 260 }
 261
 262 static inline void
 263 sfc_adapter_unlock(struct sfc_adapter *sa)
 264 {
 265         rte_spinlock_unlock(&sa->lock);
 266 }
 267
 268 static inline void
 269 sfc_adapter_lock_fini(__rte_unused struct sfc_adapter *sa)
 270 {
 271         /* Just for symmetry of the API */
 272 }
 273
 274 /** Get the number of milliseconds since boot from the default timer */
 275 static inline uint64_t
 276 sfc_get_system_msecs(void)
 277 {
 278         return rte_get_timer_cycles() * MS_PER_S / rte_get_timer_hz();
 279 }
 280
 281 int sfc_dma_alloc(const struct sfc_adapter *sa, const char *name, uint16_t id,
 282                   size_t len, int socket_id, efsys_mem_t *esmp);
 283 void sfc_dma_free(const struct sfc_adapter *sa, efsys_mem_t *esmp);
 284
 285 int sfc_attach(struct sfc_adapter *sa);
 286 void sfc_detach(struct sfc_adapter *sa);
 287 int sfc_start(struct sfc_adapter *sa);
 288 void sfc_stop(struct sfc_adapter *sa);
 289
 290 int sfc_mcdi_init(struct sfc_adapter *sa);
 291 void sfc_mcdi_fini(struct sfc_adapter *sa);
 292
 293 int sfc_configure(struct sfc_adapter *sa);
 294 void sfc_close(struct sfc_adapter *sa);
 295
 296 int sfc_intr_attach(struct sfc_adapter *sa);
 297 void sfc_intr_detach(struct sfc_adapter *sa);
 298 int sfc_intr_init(struct sfc_adapter *sa);
 299 void sfc_intr_fini(struct sfc_adapter *sa);
 300 int sfc_intr_start(struct sfc_adapter *sa);
 301 void sfc_intr_stop(struct sfc_adapter *sa);
 302
 303 int sfc_port_init(struct sfc_adapter *sa);
 304 void sfc_port_fini(struct sfc_adapter *sa);
 305 int sfc_port_start(struct sfc_adapter *sa);
 306 void sfc_port_stop(struct sfc_adapter *sa);
 307 void sfc_port_link_mode_to_info(efx_link_mode_t link_mode,
 308                                 struct rte_eth_link *link_info);
 309 int sfc_port_update_mac_stats(struct sfc_adapter *sa);
 310 int sfc_port_reset_mac_stats(struct sfc_adapter *sa);
 311 int sfc_set_rx_mode(struct sfc_adapter *sa);
 312
 313
 314 #ifdef __cplusplus
 315 }
 316 #endif
 317
 318 #endif  /* _SFC_H */