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