sys/dev/sfxge/sfxge.h

   1 /*-
   2  * Copyright (c) 2010-2016 Solarflare Communications Inc.
   3  * All rights reserved.
   4  *
   5  * This software was developed in part by Philip Paeps under contract for
   6  * 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  * The views and conclusions contained in the software and documentation are
  30  * those of the authors and should not be interpreted as representing official
  31  * policies, either expressed or implied, of the FreeBSD Project.
  32  *
  33  * $FreeBSD$
  34  */
  35
  36 #ifndef _SFXGE_H
  37 #define _SFXGE_H
  38
  39 #include <sys/param.h>
  40 #include <sys/kernel.h>
  41 #include <sys/socket.h>
  42 #include <sys/sysctl.h>
  43 #include <sys/sx.h>
  44 #include <vm/uma.h>
  45
  46 #include <net/ethernet.h>
  47 #include <net/if.h>
  48 #include <net/if_var.h>
  49 #include <net/if_media.h>
  50 #include <net/if_types.h>
  51
  52 #include "sfxge_ioc.h"
  53
  54 /*
  55  * Debugging
  56  */
  57 #if 0
  58 #define DBGPRINT(dev, fmt, args...) \
  59         device_printf(dev, "%s: " fmt "\n", __func__, ## args)
  60 #else
  61 #define DBGPRINT(dev, fmt, args...)
  62 #endif
  63
  64 /*
  65  * Backward-compatibility
  66  */
  67 #ifndef CACHE_LINE_SIZE
  68 /* This should be right on most machines the driver will be used on, and
  69  * we needn't care too much about wasting a few KB per interface.
  70  */
  71 #define CACHE_LINE_SIZE 128
  72 #endif
  73
  74 #ifndef IFCAP_LINKSTATE
  75 #define IFCAP_LINKSTATE 0
  76 #endif
  77
  78 #ifndef IFCAP_VLAN_HWTSO
  79 #define IFCAP_VLAN_HWTSO 0
  80 #endif
  81
  82 #ifndef IFM_10G_T
  83 #define IFM_10G_T IFM_UNKNOWN
  84 #endif
  85
  86 #ifndef IFM_10G_KX4
  87 #define IFM_10G_KX4 IFM_10G_CX4
  88 #endif
  89
  90 #ifndef IFM_40G_CR4
  91 #define IFM_40G_CR4 IFM_UNKNOWN
  92 #endif
  93
  94 #if (__FreeBSD_version >= 800501 && __FreeBSD_version < 900000) || \
  95         __FreeBSD_version >= 900003
  96 #define SFXGE_HAVE_DESCRIBE_INTR
  97 #endif
  98
  99 #ifdef IFM_ETH_RXPAUSE
 100 #define SFXGE_HAVE_PAUSE_MEDIAOPTS
 101 #endif
 102
 103 #ifndef CTLTYPE_U64
 104 #define CTLTYPE_U64 CTLTYPE_QUAD
 105 #endif
 106
 107 #include "sfxge_rx.h"
 108 #include "sfxge_tx.h"
 109
 110 #define ROUNDUP_POW_OF_TWO(_n)  (1ULL << flsl((_n) - 1))
 111
 112 #define SFXGE_IP_ALIGN  2
 113
 114 #define SFXGE_ETHERTYPE_LOOPBACK        0x9000  /* Xerox loopback */
 115
 116
 117 #define SFXGE_MAGIC_RESERVED            0x8000
 118
 119 #define SFXGE_MAGIC_DMAQ_LABEL_WIDTH    6
 120 #define SFXGE_MAGIC_DMAQ_LABEL_MASK \
 121         ((1 << SFXGE_MAGIC_DMAQ_LABEL_WIDTH) - 1)
 122
 123 enum sfxge_sw_ev {
 124         SFXGE_SW_EV_RX_QFLUSH_DONE = 1,
 125         SFXGE_SW_EV_RX_QFLUSH_FAILED,
 126         SFXGE_SW_EV_RX_QREFILL,
 127         SFXGE_SW_EV_TX_QFLUSH_DONE,
 128 };
 129
 130 #define SFXGE_SW_EV_MAGIC(_sw_ev) \
 131         (SFXGE_MAGIC_RESERVED | ((_sw_ev) << SFXGE_MAGIC_DMAQ_LABEL_WIDTH))
 132
 133 static inline uint16_t
 134 sfxge_sw_ev_mk_magic(enum sfxge_sw_ev sw_ev, unsigned int label)
 135 {
 136         KASSERT((label & SFXGE_MAGIC_DMAQ_LABEL_MASK) == label,
 137             ("(label & SFXGE_MAGIC_DMAQ_LABEL_MASK) != label"));
 138         return SFXGE_SW_EV_MAGIC(sw_ev) | label;
 139 }
 140
 141 static inline uint16_t
 142 sfxge_sw_ev_rxq_magic(enum sfxge_sw_ev sw_ev, struct sfxge_rxq *rxq)
 143 {
 144         return sfxge_sw_ev_mk_magic(sw_ev, 0);
 145 }
 146
 147 static inline uint16_t
 148 sfxge_sw_ev_txq_magic(enum sfxge_sw_ev sw_ev, struct sfxge_txq *txq)
 149 {
 150         return sfxge_sw_ev_mk_magic(sw_ev, txq->type);
 151 }
 152
 153 enum sfxge_evq_state {
 154         SFXGE_EVQ_UNINITIALIZED = 0,
 155         SFXGE_EVQ_INITIALIZED,
 156         SFXGE_EVQ_STARTING,
 157         SFXGE_EVQ_STARTED
 158 };
 159
 160 #define SFXGE_EV_BATCH  16384
 161
 162 #define SFXGE_STATS_UPDATE_PERIOD_MS    1000
 163
 164 struct sfxge_evq {
 165         /* Structure members below are sorted by usage order */
 166         struct sfxge_softc      *sc;
 167         struct mtx              lock;
 168         unsigned int            index;
 169         enum sfxge_evq_state    init_state;
 170         efsys_mem_t             mem;
 171         efx_evq_t               *common;
 172         unsigned int            read_ptr;
 173         boolean_t               exception;
 174         unsigned int            rx_done;
 175         unsigned int            tx_done;
 176
 177         /* Linked list of TX queues with completions to process */
 178         struct sfxge_txq        *txq;
 179         struct sfxge_txq        **txqs;
 180
 181         /* Structure members not used on event processing path */
 182         unsigned int            buf_base_id;
 183         unsigned int            entries;
 184         char                    lock_name[SFXGE_LOCK_NAME_MAX];
 185 } __aligned(CACHE_LINE_SIZE);
 186
 187 #define SFXGE_NDESCS    1024
 188 #define SFXGE_MODERATION        30
 189
 190 enum sfxge_intr_state {
 191         SFXGE_INTR_UNINITIALIZED = 0,
 192         SFXGE_INTR_INITIALIZED,
 193         SFXGE_INTR_TESTING,
 194         SFXGE_INTR_STARTED
 195 };
 196
 197 struct sfxge_intr_hdl {
 198         int                     eih_rid;
 199         void                    *eih_tag;
 200         struct resource         *eih_res;
 201 };
 202
 203 struct sfxge_intr {
 204         enum sfxge_intr_state   state;
 205         struct resource         *msix_res;
 206         struct sfxge_intr_hdl   *table;
 207         int                     n_alloc;
 208         int                     type;
 209         efsys_mem_t             status;
 210         uint32_t                zero_count;
 211 };
 212
 213 enum sfxge_mcdi_state {
 214         SFXGE_MCDI_UNINITIALIZED = 0,
 215         SFXGE_MCDI_INITIALIZED,
 216         SFXGE_MCDI_BUSY,
 217         SFXGE_MCDI_COMPLETED
 218 };
 219
 220 struct sfxge_mcdi {
 221         struct mtx              lock;
 222         efsys_mem_t             mem;
 223         enum sfxge_mcdi_state   state;
 224         efx_mcdi_transport_t    transport;
 225
 226         /* Only used in debugging output */
 227         char                    lock_name[SFXGE_LOCK_NAME_MAX];
 228 };
 229
 230 struct sfxge_hw_stats {
 231         clock_t                 update_time;
 232         efsys_mem_t             dma_buf;
 233         void                    *decode_buf;
 234 };
 235
 236 enum sfxge_port_state {
 237         SFXGE_PORT_UNINITIALIZED = 0,
 238         SFXGE_PORT_INITIALIZED,
 239         SFXGE_PORT_STARTED
 240 };
 241
 242 struct sfxge_port {
 243         struct sfxge_softc      *sc;
 244         struct mtx              lock;
 245         enum sfxge_port_state   init_state;
 246 #ifndef SFXGE_HAVE_PAUSE_MEDIAOPTS
 247         unsigned int            wanted_fc;
 248 #endif
 249         struct sfxge_hw_stats   phy_stats;
 250         struct sfxge_hw_stats   mac_stats;
 251         uint16_t                stats_update_period_ms;
 252         efx_link_mode_t         link_mode;
 253         uint8_t                 mcast_addrs[EFX_MAC_MULTICAST_LIST_MAX *
 254                                             EFX_MAC_ADDR_LEN];
 255         unsigned int            mcast_count;
 256
 257         /* Only used in debugging output */
 258         char                    lock_name[SFXGE_LOCK_NAME_MAX];
 259 };
 260
 261 enum sfxge_softc_state {
 262         SFXGE_UNINITIALIZED = 0,
 263         SFXGE_INITIALIZED,
 264         SFXGE_REGISTERED,
 265         SFXGE_STARTED
 266 };
 267
 268 struct sfxge_softc {
 269         device_t                        dev;
 270         struct sx                       softc_lock;
 271         char                            softc_lock_name[SFXGE_LOCK_NAME_MAX];
 272         enum sfxge_softc_state          init_state;
 273         struct ifnet                    *ifnet;
 274         unsigned int                    if_flags;
 275         struct sysctl_oid               *stats_node;
 276         struct sysctl_oid               *txqs_node;
 277
 278         struct task                     task_reset;
 279
 280         efx_family_t                    family;
 281         caddr_t                         vpd_data;
 282         size_t                          vpd_size;
 283         efx_nic_t                       *enp;
 284         efsys_lock_t                    enp_lock;
 285
 286         unsigned int                    rxq_entries;
 287         unsigned int                    txq_entries;
 288
 289         bus_dma_tag_t                   parent_dma_tag;
 290         efsys_bar_t                     bar;
 291
 292         struct sfxge_intr               intr;
 293         struct sfxge_mcdi               mcdi;
 294         struct sfxge_port               port;
 295         uint32_t                        buffer_table_next;
 296
 297         struct sfxge_evq                *evq[SFXGE_RX_SCALE_MAX];
 298         unsigned int                    ev_moderation;
 299 #if EFSYS_OPT_QSTATS
 300         clock_t                         ev_stats_update_time;
 301         uint64_t                        ev_stats[EV_NQSTATS];
 302 #endif
 303
 304         unsigned int                    max_rss_channels;
 305         struct sfxge_rxq                *rxq[SFXGE_RX_SCALE_MAX];
 306         unsigned int                    rx_indir_table[EFX_RSS_TBL_SIZE];
 307
 308         struct sfxge_txq                *txq[SFXGE_TXQ_NTYPES + SFXGE_RX_SCALE_MAX];
 309
 310         struct ifmedia                  media;
 311
 312         size_t                          rx_prefix_size;
 313         size_t                          rx_buffer_size;
 314         size_t                          rx_buffer_align;
 315         int                             rx_cluster_size;
 316
 317         unsigned int                    evq_max;
 318         unsigned int                    evq_count;
 319         unsigned int                    rxq_count;
 320         unsigned int                    txq_count;
 321
 322         unsigned int                    tso_fw_assisted;
 323 #define SFXGE_FATSOV1   (1 << 0)
 324 #define SFXGE_FATSOV2   (1 << 1)
 325
 326 #if EFSYS_OPT_MCDI_LOGGING
 327         int                             mcdi_logging;
 328 #endif
 329 };
 330
 331 #define SFXGE_LINK_UP(sc) \
 332         ((sc)->port.link_mode != EFX_LINK_DOWN && \
 333          (sc)->port.link_mode != EFX_LINK_UNKNOWN)
 334 #define SFXGE_RUNNING(sc) ((sc)->ifnet->if_drv_flags & IFF_DRV_RUNNING)
 335
 336 #define SFXGE_PARAM(_name)      "hw.sfxge." #_name
 337
 338 SYSCTL_DECL(_hw_sfxge);
 339
 340 /*
 341  * From sfxge.c.
 342  */
 343 extern void sfxge_schedule_reset(struct sfxge_softc *sc);
 344 extern void sfxge_sram_buf_tbl_alloc(struct sfxge_softc *sc, size_t n,
 345                                      uint32_t *idp);
 346
 347 /*
 348  * From sfxge_dma.c.
 349  */
 350 extern int sfxge_dma_init(struct sfxge_softc *sc);
 351 extern void sfxge_dma_fini(struct sfxge_softc *sc);
 352 extern int sfxge_dma_alloc(struct sfxge_softc *sc, bus_size_t len,
 353                            efsys_mem_t *esmp);
 354 extern void sfxge_dma_free(efsys_mem_t *esmp);
 355 extern int sfxge_dma_map_sg_collapse(bus_dma_tag_t tag, bus_dmamap_t map,
 356                                      struct mbuf **mp,
 357                                      bus_dma_segment_t *segs,
 358                                      int *nsegs, int maxsegs);
 359
 360 /*
 361  * From sfxge_ev.c.
 362  */
 363 extern int sfxge_ev_init(struct sfxge_softc *sc);
 364 extern void sfxge_ev_fini(struct sfxge_softc *sc);
 365 extern int sfxge_ev_start(struct sfxge_softc *sc);
 366 extern void sfxge_ev_stop(struct sfxge_softc *sc);
 367 extern int sfxge_ev_qpoll(struct sfxge_evq *evq);
 368
 369 /*
 370  * From sfxge_intr.c.
 371  */
 372 extern int sfxge_intr_init(struct sfxge_softc *sc);
 373 extern void sfxge_intr_fini(struct sfxge_softc *sc);
 374 extern int sfxge_intr_start(struct sfxge_softc *sc);
 375 extern void sfxge_intr_stop(struct sfxge_softc *sc);
 376
 377 /*
 378  * From sfxge_mcdi.c.
 379  */
 380 extern int sfxge_mcdi_init(struct sfxge_softc *sc);
 381 extern void sfxge_mcdi_fini(struct sfxge_softc *sc);
 382 extern int sfxge_mcdi_ioctl(struct sfxge_softc *sc, sfxge_ioc_t *ip);
 383
 384 /*
 385  * From sfxge_nvram.c.
 386  */
 387 extern int sfxge_nvram_ioctl(struct sfxge_softc *sc, sfxge_ioc_t *ip);
 388
 389 /*
 390  * From sfxge_port.c.
 391  */
 392 extern int sfxge_port_init(struct sfxge_softc *sc);
 393 extern void sfxge_port_fini(struct sfxge_softc *sc);
 394 extern int sfxge_port_start(struct sfxge_softc *sc);
 395 extern void sfxge_port_stop(struct sfxge_softc *sc);
 396 extern void sfxge_mac_link_update(struct sfxge_softc *sc,
 397                                   efx_link_mode_t mode);
 398 extern int sfxge_mac_filter_set(struct sfxge_softc *sc);
 399 extern int sfxge_port_ifmedia_init(struct sfxge_softc *sc);
 400 extern uint64_t sfxge_get_counter(struct ifnet *ifp, ift_counter c);
 401
 402 #define SFXGE_MAX_MTU (9 * 1024)
 403
 404 #define SFXGE_ADAPTER_LOCK_INIT(_sc, _ifname)                           \
 405         do {                                                            \
 406                 struct sfxge_softc *__sc = (_sc);                       \
 407                                                                         \
 408                 snprintf((__sc)->softc_lock_name,                       \
 409                          sizeof((__sc)->softc_lock_name),               \
 410                          "%s:softc", (_ifname));                        \
 411                 sx_init(&(__sc)->softc_lock, (__sc)->softc_lock_name);  \
 412         } while (B_FALSE)
 413 #define SFXGE_ADAPTER_LOCK_DESTROY(_sc)                                 \
 414         sx_destroy(&(_sc)->softc_lock)
 415 #define SFXGE_ADAPTER_LOCK(_sc)                                         \
 416         sx_xlock(&(_sc)->softc_lock)
 417 #define SFXGE_ADAPTER_UNLOCK(_sc)                                       \
 418         sx_xunlock(&(_sc)->softc_lock)
 419 #define SFXGE_ADAPTER_LOCK_ASSERT_OWNED(_sc)                            \
 420         sx_assert(&(_sc)->softc_lock, LA_XLOCKED)
 421
 422 #define SFXGE_PORT_LOCK_INIT(_port, _ifname)                            \
 423         do {                                                            \
 424                 struct sfxge_port *__port = (_port);                    \
 425                                                                         \
 426                 snprintf((__port)->lock_name,                           \
 427                          sizeof((__port)->lock_name),                   \
 428                          "%s:port", (_ifname));                         \
 429                 mtx_init(&(__port)->lock, (__port)->lock_name,          \
 430                          NULL, MTX_DEF);                                \
 431         } while (B_FALSE)
 432 #define SFXGE_PORT_LOCK_DESTROY(_port)                                  \
 433         mtx_destroy(&(_port)->lock)
 434 #define SFXGE_PORT_LOCK(_port)                                          \
 435         mtx_lock(&(_port)->lock)
 436 #define SFXGE_PORT_UNLOCK(_port)                                        \
 437         mtx_unlock(&(_port)->lock)
 438 #define SFXGE_PORT_LOCK_ASSERT_OWNED(_port)                             \
 439         mtx_assert(&(_port)->lock, MA_OWNED)
 440
 441 #define SFXGE_MCDI_LOCK_INIT(_mcdi, _ifname)                            \
 442         do {                                                            \
 443                 struct sfxge_mcdi  *__mcdi = (_mcdi);                   \
 444                                                                         \
 445                 snprintf((__mcdi)->lock_name,                           \
 446                          sizeof((__mcdi)->lock_name),                   \
 447                          "%s:mcdi", (_ifname));                         \
 448                 mtx_init(&(__mcdi)->lock, (__mcdi)->lock_name,          \
 449                          NULL, MTX_DEF);                                \
 450         } while (B_FALSE)
 451 #define SFXGE_MCDI_LOCK_DESTROY(_mcdi)                                  \
 452         mtx_destroy(&(_mcdi)->lock)
 453 #define SFXGE_MCDI_LOCK(_mcdi)                                          \
 454         mtx_lock(&(_mcdi)->lock)
 455 #define SFXGE_MCDI_UNLOCK(_mcdi)                                        \
 456         mtx_unlock(&(_mcdi)->lock)
 457 #define SFXGE_MCDI_LOCK_ASSERT_OWNED(_mcdi)                             \
 458         mtx_assert(&(_mcdi)->lock, MA_OWNED)
 459
 460 #define SFXGE_EVQ_LOCK_INIT(_evq, _ifname, _evq_index)                  \
 461         do {                                                            \
 462                 struct sfxge_evq  *__evq = (_evq);                      \
 463                                                                         \
 464                 snprintf((__evq)->lock_name,                            \
 465                          sizeof((__evq)->lock_name),                    \
 466                          "%s:evq%u", (_ifname), (_evq_index));          \
 467                 mtx_init(&(__evq)->lock, (__evq)->lock_name,            \
 468                          NULL, MTX_DEF);                                \
 469         } while (B_FALSE)
 470 #define SFXGE_EVQ_LOCK_DESTROY(_evq)                                    \
 471         mtx_destroy(&(_evq)->lock)
 472 #define SFXGE_EVQ_LOCK(_evq)                                            \
 473         mtx_lock(&(_evq)->lock)
 474 #define SFXGE_EVQ_UNLOCK(_evq)                                          \
 475         mtx_unlock(&(_evq)->lock)
 476 #define SFXGE_EVQ_LOCK_ASSERT_OWNED(_evq)                               \
 477         mtx_assert(&(_evq)->lock, MA_OWNED)
 478
 479 #endif /* _SFXGE_H */