sys/dev/sfxge/sfxge.h

   1 /*-
   2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
   3  *
   4  * Copyright (c) 2010-2016 Solarflare Communications Inc.
   5  * All rights reserved.
   6  *
   7  * This software was developed in part by Philip Paeps under contract for
   8  * 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  * The views and conclusions contained in the software and documentation are
  32  * those of the authors and should not be interpreted as representing official
  33  * policies, either expressed or implied, of the FreeBSD Project.
  34  *
  35  * $FreeBSD$
  36  */
  37
  38 #ifndef _SFXGE_H
  39 #define _SFXGE_H
  40
  41 #include <sys/param.h>
  42 #include <sys/kernel.h>
  43 #include <sys/socket.h>
  44 #include <sys/sysctl.h>
  45 #include <sys/sx.h>
  46 #include <vm/uma.h>
  47
  48 #include <net/ethernet.h>
  49 #include <net/if.h>
  50 #include <net/if_var.h>
  51 #include <net/if_media.h>
  52 #include <net/if_types.h>
  53
  54 #include "sfxge_ioc.h"
  55
  56 /*
  57  * Debugging
  58  */
  59 #if 0
  60 #define DBGPRINT(dev, fmt, args...) \
  61         device_printf(dev, "%s: " fmt "\n", __func__, ## args)
  62 #else
  63 #define DBGPRINT(dev, fmt, args...)
  64 #endif
  65
  66 /*
  67  * Backward-compatibility
  68  */
  69 #ifndef CACHE_LINE_SIZE
  70 /* This should be right on most machines the driver will be used on, and
  71  * we needn't care too much about wasting a few KB per interface.
  72  */
  73 #define CACHE_LINE_SIZE 128
  74 #endif
  75
  76 #ifndef IFCAP_LINKSTATE
  77 #define IFCAP_LINKSTATE 0
  78 #endif
  79
  80 #ifndef IFCAP_VLAN_HWTSO
  81 #define IFCAP_VLAN_HWTSO 0
  82 #endif
  83
  84 #ifndef IFM_10G_T
  85 #define IFM_10G_T IFM_UNKNOWN
  86 #endif
  87
  88 #ifndef IFM_10G_KX4
  89 #define IFM_10G_KX4 IFM_10G_CX4
  90 #endif
  91
  92 #ifndef IFM_40G_CR4
  93 #define IFM_40G_CR4 IFM_UNKNOWN
  94 #endif
  95
  96 #if (__FreeBSD_version >= 800501 && __FreeBSD_version < 900000) || \
  97         __FreeBSD_version >= 900003
  98 #define SFXGE_HAVE_DESCRIBE_INTR
  99 #endif
 100
 101 #ifdef IFM_ETH_RXPAUSE
 102 #define SFXGE_HAVE_PAUSE_MEDIAOPTS
 103 #endif
 104
 105 #ifndef CTLTYPE_U64
 106 #define CTLTYPE_U64 CTLTYPE_QUAD
 107 #endif
 108
 109 #include "sfxge_rx.h"
 110 #include "sfxge_tx.h"
 111
 112 #define ROUNDUP_POW_OF_TWO(_n)  (1ULL << flsl((_n) - 1))
 113
 114 #define SFXGE_IP_ALIGN  2
 115
 116 #define SFXGE_ETHERTYPE_LOOPBACK        0x9000  /* Xerox loopback */
 117
 118
 119 #define SFXGE_MAGIC_RESERVED            0x8000
 120
 121 #define SFXGE_MAGIC_DMAQ_LABEL_WIDTH    6
 122 #define SFXGE_MAGIC_DMAQ_LABEL_MASK \
 123         ((1 << SFXGE_MAGIC_DMAQ_LABEL_WIDTH) - 1)
 124
 125 enum sfxge_sw_ev {
 126         SFXGE_SW_EV_RX_QFLUSH_DONE = 1,
 127         SFXGE_SW_EV_RX_QFLUSH_FAILED,
 128         SFXGE_SW_EV_RX_QREFILL,
 129         SFXGE_SW_EV_TX_QFLUSH_DONE,
 130 };
 131
 132 #define SFXGE_SW_EV_MAGIC(_sw_ev) \
 133         (SFXGE_MAGIC_RESERVED | ((_sw_ev) << SFXGE_MAGIC_DMAQ_LABEL_WIDTH))
 134
 135 static inline uint16_t
 136 sfxge_sw_ev_mk_magic(enum sfxge_sw_ev sw_ev, unsigned int label)
 137 {
 138         KASSERT((label & SFXGE_MAGIC_DMAQ_LABEL_MASK) == label,
 139             ("(label & SFXGE_MAGIC_DMAQ_LABEL_MASK) != label"));
 140         return SFXGE_SW_EV_MAGIC(sw_ev) | label;
 141 }
 142
 143 static inline uint16_t
 144 sfxge_sw_ev_rxq_magic(enum sfxge_sw_ev sw_ev, struct sfxge_rxq *rxq)
 145 {
 146         return sfxge_sw_ev_mk_magic(sw_ev, 0);
 147 }
 148
 149 static inline uint16_t
 150 sfxge_sw_ev_txq_magic(enum sfxge_sw_ev sw_ev, struct sfxge_txq *txq)
 151 {
 152         return sfxge_sw_ev_mk_magic(sw_ev, txq->type);
 153 }
 154
 155 enum sfxge_evq_state {
 156         SFXGE_EVQ_UNINITIALIZED = 0,
 157         SFXGE_EVQ_INITIALIZED,
 158         SFXGE_EVQ_STARTING,
 159         SFXGE_EVQ_STARTED
 160 };
 161
 162 #define SFXGE_EV_BATCH  16384
 163
 164 #define SFXGE_STATS_UPDATE_PERIOD_MS    1000
 165
 166 struct sfxge_evq {
 167         /* Structure members below are sorted by usage order */
 168         struct sfxge_softc      *sc;
 169         struct mtx              lock;
 170         unsigned int            index;
 171         enum sfxge_evq_state    init_state;
 172         efsys_mem_t             mem;
 173         efx_evq_t               *common;
 174         unsigned int            read_ptr;
 175         boolean_t               exception;
 176         unsigned int            rx_done;
 177         unsigned int            tx_done;
 178
 179         /* Linked list of TX queues with completions to process */
 180         struct sfxge_txq        *txq;
 181         struct sfxge_txq        **txqs;
 182
 183         /* Structure members not used on event processing path */
 184         unsigned int            buf_base_id;
 185         unsigned int            entries;
 186         char                    lock_name[SFXGE_LOCK_NAME_MAX];
 187 #if EFSYS_OPT_QSTATS
 188         clock_t                 stats_update_time;
 189         uint64_t                stats[EV_NQSTATS];
 190 #endif
 191 } __aligned(CACHE_LINE_SIZE);
 192
 193 #define SFXGE_NDESCS    1024
 194 #define SFXGE_MODERATION        30
 195
 196 enum sfxge_intr_state {
 197         SFXGE_INTR_UNINITIALIZED = 0,
 198         SFXGE_INTR_INITIALIZED,
 199         SFXGE_INTR_TESTING,
 200         SFXGE_INTR_STARTED
 201 };
 202
 203 struct sfxge_intr_hdl {
 204         int                     eih_rid;
 205         void                    *eih_tag;
 206         struct resource         *eih_res;
 207 };
 208
 209 struct sfxge_intr {
 210         enum sfxge_intr_state   state;
 211         struct resource         *msix_res;
 212         struct sfxge_intr_hdl   *table;
 213         int                     n_alloc;
 214         int                     type;
 215         efsys_mem_t             status;
 216         uint32_t                zero_count;
 217 };
 218
 219 enum sfxge_mcdi_state {
 220         SFXGE_MCDI_UNINITIALIZED = 0,
 221         SFXGE_MCDI_INITIALIZED,
 222         SFXGE_MCDI_BUSY,
 223         SFXGE_MCDI_COMPLETED
 224 };
 225
 226 struct sfxge_mcdi {
 227         struct mtx              lock;
 228         efsys_mem_t             mem;
 229         enum sfxge_mcdi_state   state;
 230         efx_mcdi_transport_t    transport;
 231
 232         /* Only used in debugging output */
 233         char                    lock_name[SFXGE_LOCK_NAME_MAX];
 234 };
 235
 236 struct sfxge_hw_stats {
 237         clock_t                 update_time;
 238         efsys_mem_t             dma_buf;
 239         void                    *decode_buf;
 240 };
 241
 242 enum sfxge_port_state {
 243         SFXGE_PORT_UNINITIALIZED = 0,
 244         SFXGE_PORT_INITIALIZED,
 245         SFXGE_PORT_STARTED
 246 };
 247
 248 struct sfxge_port {
 249         struct sfxge_softc      *sc;
 250         struct mtx              lock;
 251         enum sfxge_port_state   init_state;
 252 #ifndef SFXGE_HAVE_PAUSE_MEDIAOPTS
 253         unsigned int            wanted_fc;
 254 #endif
 255         struct sfxge_hw_stats   phy_stats;
 256         struct sfxge_hw_stats   mac_stats;
 257         uint16_t                stats_update_period_ms;
 258         efx_link_mode_t         link_mode;
 259         uint8_t                 mcast_addrs[EFX_MAC_MULTICAST_LIST_MAX *
 260                                             EFX_MAC_ADDR_LEN];
 261         unsigned int            mcast_count;
 262
 263         /* Only used in debugging output */
 264         char                    lock_name[SFXGE_LOCK_NAME_MAX];
 265 };
 266
 267 enum sfxge_softc_state {
 268         SFXGE_UNINITIALIZED = 0,
 269         SFXGE_INITIALIZED,
 270         SFXGE_REGISTERED,
 271         SFXGE_STARTED
 272 };
 273
 274 struct sfxge_softc {
 275         device_t                        dev;
 276         struct sx                       softc_lock;
 277         char                            softc_lock_name[SFXGE_LOCK_NAME_MAX];
 278         enum sfxge_softc_state          init_state;
 279         struct ifnet                    *ifnet;
 280         unsigned int                    if_flags;
 281         struct sysctl_oid               *stats_node;
 282 #if EFSYS_OPT_QSTATS
 283         struct sysctl_oid               *evqs_stats_node;
 284 #endif
 285         struct sysctl_oid               *txqs_node;
 286
 287         struct task                     task_reset;
 288
 289         efx_family_t                    family;
 290         unsigned int                    mem_bar;
 291
 292         caddr_t                         vpd_data;
 293         size_t                          vpd_size;
 294         efx_nic_t                       *enp;
 295         efsys_lock_t                    enp_lock;
 296
 297         boolean_t                       txq_dynamic_cksum_toggle_supported;
 298
 299         unsigned int                    rxq_entries;
 300         unsigned int                    txq_entries;
 301
 302         bus_dma_tag_t                   parent_dma_tag;
 303         efsys_bar_t                     bar;
 304
 305         struct sfxge_intr               intr;
 306         struct sfxge_mcdi               mcdi;
 307         struct sfxge_port               port;
 308         uint32_t                        buffer_table_next;
 309
 310         struct sfxge_evq                *evq[SFXGE_RX_SCALE_MAX];
 311         unsigned int                    ev_moderation;
 312 #if EFSYS_OPT_QSTATS
 313         clock_t                         ev_stats_update_time;
 314         uint64_t                        ev_stats[EV_NQSTATS];
 315 #endif
 316
 317         unsigned int                    max_rss_channels;
 318         struct sfxge_rxq                *rxq[SFXGE_RX_SCALE_MAX];
 319         unsigned int                    rx_indir_table[EFX_RSS_TBL_SIZE];
 320
 321         struct sfxge_txq                *txq[SFXGE_TXQ_NTYPES + SFXGE_RX_SCALE_MAX];
 322
 323         struct ifmedia                  media;
 324
 325         size_t                          rx_prefix_size;
 326         size_t                          rx_buffer_size;
 327         size_t                          rx_buffer_align;
 328         int                             rx_cluster_size;
 329
 330         unsigned int                    evq_max;
 331         unsigned int                    evq_count;
 332         unsigned int                    rxq_count;
 333         unsigned int                    txq_count;
 334
 335         unsigned int                    tso_fw_assisted;
 336 #define SFXGE_FATSOV1   (1 << 0)
 337 #define SFXGE_FATSOV2   (1 << 1)
 338
 339 #if EFSYS_OPT_MCDI_LOGGING
 340         int                             mcdi_logging;
 341 #endif
 342 };
 343
 344 #define SFXGE_LINK_UP(sc) \
 345         ((sc)->port.link_mode != EFX_LINK_DOWN && \
 346          (sc)->port.link_mode != EFX_LINK_UNKNOWN)
 347 #define SFXGE_RUNNING(sc) ((sc)->ifnet->if_drv_flags & IFF_DRV_RUNNING)
 348
 349 #define SFXGE_PARAM(_name)      "hw.sfxge." #_name
 350
 351 SYSCTL_DECL(_hw_sfxge);
 352
 353 /*
 354  * From sfxge.c.
 355  */
 356 extern void sfxge_schedule_reset(struct sfxge_softc *sc);
 357 extern void sfxge_sram_buf_tbl_alloc(struct sfxge_softc *sc, size_t n,
 358                                      uint32_t *idp);
 359
 360 /*
 361  * From sfxge_dma.c.
 362  */
 363 extern int sfxge_dma_init(struct sfxge_softc *sc);
 364 extern void sfxge_dma_fini(struct sfxge_softc *sc);
 365 extern int sfxge_dma_alloc(struct sfxge_softc *sc, bus_size_t len,
 366                            efsys_mem_t *esmp);
 367 extern void sfxge_dma_free(efsys_mem_t *esmp);
 368 extern int sfxge_dma_map_sg_collapse(bus_dma_tag_t tag, bus_dmamap_t map,
 369                                      struct mbuf **mp,
 370                                      bus_dma_segment_t *segs,
 371                                      int *nsegs, int maxsegs);
 372
 373 /*
 374  * From sfxge_ev.c.
 375  */
 376 extern int sfxge_ev_init(struct sfxge_softc *sc);
 377 extern void sfxge_ev_fini(struct sfxge_softc *sc);
 378 extern int sfxge_ev_start(struct sfxge_softc *sc);
 379 extern void sfxge_ev_stop(struct sfxge_softc *sc);
 380 extern int sfxge_ev_qpoll(struct sfxge_evq *evq);
 381
 382 /*
 383  * From sfxge_intr.c.
 384  */
 385 extern int sfxge_intr_init(struct sfxge_softc *sc);
 386 extern void sfxge_intr_fini(struct sfxge_softc *sc);
 387 extern int sfxge_intr_start(struct sfxge_softc *sc);
 388 extern void sfxge_intr_stop(struct sfxge_softc *sc);
 389
 390 /*
 391  * From sfxge_mcdi.c.
 392  */
 393 extern int sfxge_mcdi_init(struct sfxge_softc *sc);
 394 extern void sfxge_mcdi_fini(struct sfxge_softc *sc);
 395 extern int sfxge_mcdi_ioctl(struct sfxge_softc *sc, sfxge_ioc_t *ip);
 396
 397 /*
 398  * From sfxge_nvram.c.
 399  */
 400 extern int sfxge_nvram_ioctl(struct sfxge_softc *sc, sfxge_ioc_t *ip);
 401
 402 /*
 403  * From sfxge_port.c.
 404  */
 405 extern int sfxge_port_init(struct sfxge_softc *sc);
 406 extern void sfxge_port_fini(struct sfxge_softc *sc);
 407 extern int sfxge_port_start(struct sfxge_softc *sc);
 408 extern void sfxge_port_stop(struct sfxge_softc *sc);
 409 extern void sfxge_mac_link_update(struct sfxge_softc *sc,
 410                                   efx_link_mode_t mode);
 411 extern int sfxge_mac_filter_set(struct sfxge_softc *sc);
 412 extern int sfxge_port_ifmedia_init(struct sfxge_softc *sc);
 413 extern uint64_t sfxge_get_counter(struct ifnet *ifp, ift_counter c);
 414
 415 #define SFXGE_MAX_MTU (9 * 1024)
 416
 417 #define SFXGE_ADAPTER_LOCK_INIT(_sc, _ifname)                           \
 418         do {                                                            \
 419                 struct sfxge_softc *__sc = (_sc);                       \
 420                                                                         \
 421                 snprintf((__sc)->softc_lock_name,                       \
 422                          sizeof((__sc)->softc_lock_name),               \
 423                          "%s:softc", (_ifname));                        \
 424                 sx_init(&(__sc)->softc_lock, (__sc)->softc_lock_name);  \
 425         } while (B_FALSE)
 426 #define SFXGE_ADAPTER_LOCK_DESTROY(_sc)                                 \
 427         sx_destroy(&(_sc)->softc_lock)
 428 #define SFXGE_ADAPTER_LOCK(_sc)                                         \
 429         sx_xlock(&(_sc)->softc_lock)
 430 #define SFXGE_ADAPTER_UNLOCK(_sc)                                       \
 431         sx_xunlock(&(_sc)->softc_lock)
 432 #define SFXGE_ADAPTER_LOCK_ASSERT_OWNED(_sc)                            \
 433         sx_assert(&(_sc)->softc_lock, LA_XLOCKED)
 434
 435 #define SFXGE_PORT_LOCK_INIT(_port, _ifname)                            \
 436         do {                                                            \
 437                 struct sfxge_port *__port = (_port);                    \
 438                                                                         \
 439                 snprintf((__port)->lock_name,                           \
 440                          sizeof((__port)->lock_name),                   \
 441                          "%s:port", (_ifname));                         \
 442                 mtx_init(&(__port)->lock, (__port)->lock_name,          \
 443                          NULL, MTX_DEF);                                \
 444         } while (B_FALSE)
 445 #define SFXGE_PORT_LOCK_DESTROY(_port)                                  \
 446         mtx_destroy(&(_port)->lock)
 447 #define SFXGE_PORT_LOCK(_port)                                          \
 448         mtx_lock(&(_port)->lock)
 449 #define SFXGE_PORT_UNLOCK(_port)                                        \
 450         mtx_unlock(&(_port)->lock)
 451 #define SFXGE_PORT_LOCK_ASSERT_OWNED(_port)                             \
 452         mtx_assert(&(_port)->lock, MA_OWNED)
 453
 454 #define SFXGE_MCDI_LOCK_INIT(_mcdi, _ifname)                            \
 455         do {                                                            \
 456                 struct sfxge_mcdi  *__mcdi = (_mcdi);                   \
 457                                                                         \
 458                 snprintf((__mcdi)->lock_name,                           \
 459                          sizeof((__mcdi)->lock_name),                   \
 460                          "%s:mcdi", (_ifname));                         \
 461                 mtx_init(&(__mcdi)->lock, (__mcdi)->lock_name,          \
 462                          NULL, MTX_DEF);                                \
 463         } while (B_FALSE)
 464 #define SFXGE_MCDI_LOCK_DESTROY(_mcdi)                                  \
 465         mtx_destroy(&(_mcdi)->lock)
 466 #define SFXGE_MCDI_LOCK(_mcdi)                                          \
 467         mtx_lock(&(_mcdi)->lock)
 468 #define SFXGE_MCDI_UNLOCK(_mcdi)                                        \
 469         mtx_unlock(&(_mcdi)->lock)
 470 #define SFXGE_MCDI_LOCK_ASSERT_OWNED(_mcdi)                             \
 471         mtx_assert(&(_mcdi)->lock, MA_OWNED)
 472
 473 #define SFXGE_EVQ_LOCK_INIT(_evq, _ifname, _evq_index)                  \
 474         do {                                                            \
 475                 struct sfxge_evq  *__evq = (_evq);                      \
 476                                                                         \
 477                 snprintf((__evq)->lock_name,                            \
 478                          sizeof((__evq)->lock_name),                    \
 479                          "%s:evq%u", (_ifname), (_evq_index));          \
 480                 mtx_init(&(__evq)->lock, (__evq)->lock_name,            \
 481                          NULL, MTX_DEF);                                \
 482         } while (B_FALSE)
 483 #define SFXGE_EVQ_LOCK_DESTROY(_evq)                                    \
 484         mtx_destroy(&(_evq)->lock)
 485 #define SFXGE_EVQ_LOCK(_evq)                                            \
 486         mtx_lock(&(_evq)->lock)
 487 #define SFXGE_EVQ_UNLOCK(_evq)                                          \
 488         mtx_unlock(&(_evq)->lock)
 489 #define SFXGE_EVQ_LOCK_ASSERT_OWNED(_evq)                               \
 490         mtx_assert(&(_evq)->lock, MA_OWNED)
 491
 492 #endif /* _SFXGE_H */