sys/dev/sfxge/sfxge.h

   1 /*-
   2  * Copyright (c) 2010-2015 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_media.h>
  49 #include <net/if_types.h>
  50
  51 #include "sfxge_ioc.h"
  52
  53 /*
  54  * Debugging
  55  */
  56 #if 0
  57 #define DBGPRINT(dev, fmt, args...) \
  58         device_printf(dev, "%s: " fmt "\n", __func__, ## args)
  59 #else
  60 #define DBGPRINT(dev, fmt, args...)
  61 #endif
  62
  63 /*
  64  * Backward-compatibility
  65  */
  66 #ifndef CACHE_LINE_SIZE
  67 /* This should be right on most machines the driver will be used on, and
  68  * we needn't care too much about wasting a few KB per interface.
  69  */
  70 #define CACHE_LINE_SIZE 128
  71 #endif
  72
  73 #ifndef IFCAP_LINKSTATE
  74 #define IFCAP_LINKSTATE 0
  75 #endif
  76
  77 #ifndef IFCAP_VLAN_HWTSO
  78 #define IFCAP_VLAN_HWTSO 0
  79 #endif
  80
  81 #ifndef IFM_10G_T
  82 #define IFM_10G_T IFM_UNKNOWN
  83 #endif
  84
  85 #ifndef IFM_10G_KX4
  86 #define IFM_10G_KX4 IFM_10G_CX4
  87 #endif
  88
  89 #ifndef IFM_40G_CR4
  90 #define IFM_40G_CR4 IFM_UNKNOWN
  91 #endif
  92
  93 #if (__FreeBSD_version >= 800501 && __FreeBSD_version < 900000) || \
  94         __FreeBSD_version >= 900003
  95 #define SFXGE_HAVE_DESCRIBE_INTR
  96 #endif
  97
  98 #ifdef IFM_ETH_RXPAUSE
  99 #define SFXGE_HAVE_PAUSE_MEDIAOPTS
 100 #endif
 101
 102 #ifndef CTLTYPE_U64
 103 #define CTLTYPE_U64 CTLTYPE_QUAD
 104 #endif
 105
 106 #include "sfxge_rx.h"
 107 #include "sfxge_tx.h"
 108
 109 #define ROUNDUP_POW_OF_TWO(_n)  (1ULL << flsl((_n) - 1))
 110
 111 #define SFXGE_IP_ALIGN  2
 112
 113 #define SFXGE_ETHERTYPE_LOOPBACK        0x9000  /* Xerox loopback */
 114
 115 enum sfxge_evq_state {
 116         SFXGE_EVQ_UNINITIALIZED = 0,
 117         SFXGE_EVQ_INITIALIZED,
 118         SFXGE_EVQ_STARTING,
 119         SFXGE_EVQ_STARTED
 120 };
 121
 122 #define SFXGE_EV_BATCH  16384
 123
 124 struct sfxge_evq {
 125         /* Structure members below are sorted by usage order */
 126         struct sfxge_softc      *sc;
 127         struct mtx              lock;
 128         unsigned int            index;
 129         enum sfxge_evq_state    init_state;
 130         efsys_mem_t             mem;
 131         efx_evq_t               *common;
 132         unsigned int            read_ptr;
 133         boolean_t               exception;
 134         unsigned int            rx_done;
 135         unsigned int            tx_done;
 136
 137         /* Linked list of TX queues with completions to process */
 138         struct sfxge_txq        *txq;
 139         struct sfxge_txq        **txqs;
 140
 141         /* Structure members not used on event processing path */
 142         unsigned int            buf_base_id;
 143         unsigned int            entries;
 144         char                    lock_name[SFXGE_LOCK_NAME_MAX];
 145 } __aligned(CACHE_LINE_SIZE);
 146
 147 #define SFXGE_NDESCS    1024
 148 #define SFXGE_MODERATION        30
 149
 150 enum sfxge_intr_state {
 151         SFXGE_INTR_UNINITIALIZED = 0,
 152         SFXGE_INTR_INITIALIZED,
 153         SFXGE_INTR_TESTING,
 154         SFXGE_INTR_STARTED
 155 };
 156
 157 struct sfxge_intr_hdl {
 158         int                     eih_rid;
 159         void                    *eih_tag;
 160         struct resource         *eih_res;
 161 };
 162
 163 struct sfxge_intr {
 164         enum sfxge_intr_state   state;
 165         struct resource         *msix_res;
 166         struct sfxge_intr_hdl   *table;
 167         int                     n_alloc;
 168         int                     type;
 169         efsys_mem_t             status;
 170         uint32_t                zero_count;
 171 };
 172
 173 enum sfxge_mcdi_state {
 174         SFXGE_MCDI_UNINITIALIZED = 0,
 175         SFXGE_MCDI_INITIALIZED,
 176         SFXGE_MCDI_BUSY,
 177         SFXGE_MCDI_COMPLETED
 178 };
 179
 180 struct sfxge_mcdi {
 181         struct mtx              lock;
 182         efsys_mem_t             mem;
 183         enum sfxge_mcdi_state   state;
 184         efx_mcdi_transport_t    transport;
 185
 186         /* Only used in debugging output */
 187         char                    lock_name[SFXGE_LOCK_NAME_MAX];
 188 };
 189
 190 struct sfxge_hw_stats {
 191         clock_t                 update_time;
 192         efsys_mem_t             dma_buf;
 193         void                    *decode_buf;
 194 };
 195
 196 enum sfxge_port_state {
 197         SFXGE_PORT_UNINITIALIZED = 0,
 198         SFXGE_PORT_INITIALIZED,
 199         SFXGE_PORT_STARTED
 200 };
 201
 202 struct sfxge_port {
 203         struct sfxge_softc      *sc;
 204         struct mtx              lock;
 205         enum sfxge_port_state   init_state;
 206 #ifndef SFXGE_HAVE_PAUSE_MEDIAOPTS
 207         unsigned int            wanted_fc;
 208 #endif
 209         struct sfxge_hw_stats   phy_stats;
 210         struct sfxge_hw_stats   mac_stats;
 211         efx_link_mode_t         link_mode;
 212         uint8_t                 mcast_addrs[EFX_MAC_MULTICAST_LIST_MAX *
 213                                             EFX_MAC_ADDR_LEN];
 214         unsigned int            mcast_count;
 215
 216         /* Only used in debugging output */
 217         char                    lock_name[SFXGE_LOCK_NAME_MAX];
 218 };
 219
 220 enum sfxge_softc_state {
 221         SFXGE_UNINITIALIZED = 0,
 222         SFXGE_INITIALIZED,
 223         SFXGE_REGISTERED,
 224         SFXGE_STARTED
 225 };
 226
 227 struct sfxge_softc {
 228         device_t                        dev;
 229         struct sx                       softc_lock;
 230         char                            softc_lock_name[SFXGE_LOCK_NAME_MAX];
 231         enum sfxge_softc_state          init_state;
 232         struct ifnet                    *ifnet;
 233         unsigned int                    if_flags;
 234         struct sysctl_oid               *stats_node;
 235         struct sysctl_oid               *txqs_node;
 236
 237         struct task                     task_reset;
 238
 239         efx_family_t                    family;
 240         caddr_t                         vpd_data;
 241         size_t                          vpd_size;
 242         efx_nic_t                       *enp;
 243         efsys_lock_t                    enp_lock;
 244
 245         unsigned int                    rxq_entries;
 246         unsigned int                    txq_entries;
 247
 248         bus_dma_tag_t                   parent_dma_tag;
 249         efsys_bar_t                     bar;
 250
 251         struct sfxge_intr               intr;
 252         struct sfxge_mcdi               mcdi;
 253         struct sfxge_port               port;
 254         uint32_t                        buffer_table_next;
 255
 256         struct sfxge_evq                *evq[SFXGE_RX_SCALE_MAX];
 257         unsigned int                    ev_moderation;
 258 #if EFSYS_OPT_QSTATS
 259         clock_t                         ev_stats_update_time;
 260         uint64_t                        ev_stats[EV_NQSTATS];
 261 #endif
 262
 263         unsigned int                    max_rss_channels;
 264         uma_zone_t                      rxq_cache;
 265         struct sfxge_rxq                *rxq[SFXGE_RX_SCALE_MAX];
 266         unsigned int                    rx_indir_table[SFXGE_RX_SCALE_MAX];
 267
 268         struct sfxge_txq                *txq[SFXGE_TXQ_NTYPES + SFXGE_RX_SCALE_MAX];
 269
 270         struct ifmedia                  media;
 271
 272         size_t                          rx_prefix_size;
 273         size_t                          rx_buffer_size;
 274         size_t                          rx_buffer_align;
 275         uma_zone_t                      rx_buffer_zone;
 276
 277         unsigned int                    evq_max;
 278         unsigned int                    evq_count;
 279         unsigned int                    rxq_count;
 280         unsigned int                    txq_count;
 281
 282         int                             tso_fw_assisted;
 283 };
 284
 285 #define SFXGE_LINK_UP(sc) ((sc)->port.link_mode != EFX_LINK_DOWN)
 286 #define SFXGE_RUNNING(sc) ((sc)->ifnet->if_drv_flags & IFF_DRV_RUNNING)
 287
 288 #define SFXGE_PARAM(_name)      "hw.sfxge." #_name
 289
 290 SYSCTL_DECL(_hw_sfxge);
 291
 292 /*
 293  * From sfxge.c.
 294  */
 295 extern void sfxge_schedule_reset(struct sfxge_softc *sc);
 296 extern void sfxge_sram_buf_tbl_alloc(struct sfxge_softc *sc, size_t n,
 297                                      uint32_t *idp);
 298
 299 /*
 300  * From sfxge_dma.c.
 301  */
 302 extern int sfxge_dma_init(struct sfxge_softc *sc);
 303 extern void sfxge_dma_fini(struct sfxge_softc *sc);
 304 extern int sfxge_dma_alloc(struct sfxge_softc *sc, bus_size_t len,
 305                            efsys_mem_t *esmp);
 306 extern void sfxge_dma_free(efsys_mem_t *esmp);
 307 extern int sfxge_dma_map_sg_collapse(bus_dma_tag_t tag, bus_dmamap_t map,
 308                                      struct mbuf **mp,
 309                                      bus_dma_segment_t *segs,
 310                                      int *nsegs, int maxsegs);
 311
 312 /*
 313  * From sfxge_ev.c.
 314  */
 315 extern int sfxge_ev_init(struct sfxge_softc *sc);
 316 extern void sfxge_ev_fini(struct sfxge_softc *sc);
 317 extern int sfxge_ev_start(struct sfxge_softc *sc);
 318 extern void sfxge_ev_stop(struct sfxge_softc *sc);
 319 extern int sfxge_ev_qpoll(struct sfxge_evq *evq);
 320
 321 /*
 322  * From sfxge_intr.c.
 323  */
 324 extern int sfxge_intr_init(struct sfxge_softc *sc);
 325 extern void sfxge_intr_fini(struct sfxge_softc *sc);
 326 extern int sfxge_intr_start(struct sfxge_softc *sc);
 327 extern void sfxge_intr_stop(struct sfxge_softc *sc);
 328
 329 /*
 330  * From sfxge_mcdi.c.
 331  */
 332 extern int sfxge_mcdi_init(struct sfxge_softc *sc);
 333 extern void sfxge_mcdi_fini(struct sfxge_softc *sc);
 334 extern int sfxge_mcdi_ioctl(struct sfxge_softc *sc, sfxge_ioc_t *ip);
 335
 336 /*
 337  * From sfxge_nvram.c.
 338  */
 339 extern int sfxge_nvram_ioctl(struct sfxge_softc *sc, sfxge_ioc_t *ip);
 340
 341 /*
 342  * From sfxge_port.c.
 343  */
 344 extern int sfxge_port_init(struct sfxge_softc *sc);
 345 extern void sfxge_port_fini(struct sfxge_softc *sc);
 346 extern int sfxge_port_start(struct sfxge_softc *sc);
 347 extern void sfxge_port_stop(struct sfxge_softc *sc);
 348 extern void sfxge_mac_link_update(struct sfxge_softc *sc,
 349                                   efx_link_mode_t mode);
 350 extern int sfxge_mac_filter_set(struct sfxge_softc *sc);
 351 extern int sfxge_port_ifmedia_init(struct sfxge_softc *sc);
 352
 353 #define SFXGE_MAX_MTU (9 * 1024)
 354
 355 #define SFXGE_ADAPTER_LOCK_INIT(_sc, _ifname)                           \
 356         do {                                                            \
 357                 struct sfxge_softc *__sc = (_sc);                       \
 358                                                                         \
 359                 snprintf((__sc)->softc_lock_name,                       \
 360                          sizeof((__sc)->softc_lock_name),               \
 361                          "%s:softc", (_ifname));                        \
 362                 sx_init(&(__sc)->softc_lock, (__sc)->softc_lock_name);  \
 363         } while (B_FALSE)
 364 #define SFXGE_ADAPTER_LOCK_DESTROY(_sc)                                 \
 365         sx_destroy(&(_sc)->softc_lock)
 366 #define SFXGE_ADAPTER_LOCK(_sc)                                         \
 367         sx_xlock(&(_sc)->softc_lock)
 368 #define SFXGE_ADAPTER_UNLOCK(_sc)                                       \
 369         sx_xunlock(&(_sc)->softc_lock)
 370 #define SFXGE_ADAPTER_LOCK_ASSERT_OWNED(_sc)                            \
 371         sx_assert(&(_sc)->softc_lock, LA_XLOCKED)
 372
 373 #define SFXGE_PORT_LOCK_INIT(_port, _ifname)                            \
 374         do {                                                            \
 375                 struct sfxge_port *__port = (_port);                    \
 376                                                                         \
 377                 snprintf((__port)->lock_name,                           \
 378                          sizeof((__port)->lock_name),                   \
 379                          "%s:port", (_ifname));                         \
 380                 mtx_init(&(__port)->lock, (__port)->lock_name,          \
 381                          NULL, MTX_DEF);                                \
 382         } while (B_FALSE)
 383 #define SFXGE_PORT_LOCK_DESTROY(_port)                                  \
 384         mtx_destroy(&(_port)->lock)
 385 #define SFXGE_PORT_LOCK(_port)                                          \
 386         mtx_lock(&(_port)->lock)
 387 #define SFXGE_PORT_UNLOCK(_port)                                        \
 388         mtx_unlock(&(_port)->lock)
 389 #define SFXGE_PORT_LOCK_ASSERT_OWNED(_port)                             \
 390         mtx_assert(&(_port)->lock, MA_OWNED)
 391
 392 #define SFXGE_MCDI_LOCK_INIT(_mcdi, _ifname)                            \
 393         do {                                                            \
 394                 struct sfxge_mcdi  *__mcdi = (_mcdi);                   \
 395                                                                         \
 396                 snprintf((__mcdi)->lock_name,                           \
 397                          sizeof((__mcdi)->lock_name),                   \
 398                          "%s:mcdi", (_ifname));                         \
 399                 mtx_init(&(__mcdi)->lock, (__mcdi)->lock_name,          \
 400                          NULL, MTX_DEF);                                \
 401         } while (B_FALSE)
 402 #define SFXGE_MCDI_LOCK_DESTROY(_mcdi)                                  \
 403         mtx_destroy(&(_mcdi)->lock)
 404 #define SFXGE_MCDI_LOCK(_mcdi)                                          \
 405         mtx_lock(&(_mcdi)->lock)
 406 #define SFXGE_MCDI_UNLOCK(_mcdi)                                        \
 407         mtx_unlock(&(_mcdi)->lock)
 408 #define SFXGE_MCDI_LOCK_ASSERT_OWNED(_mcdi)                             \
 409         mtx_assert(&(_mcdi)->lock, MA_OWNED)
 410
 411 #define SFXGE_EVQ_LOCK_INIT(_evq, _ifname, _evq_index)                  \
 412         do {                                                            \
 413                 struct sfxge_evq  *__evq = (_evq);                      \
 414                                                                         \
 415                 snprintf((__evq)->lock_name,                            \
 416                          sizeof((__evq)->lock_name),                    \
 417                          "%s:evq%u", (_ifname), (_evq_index));          \
 418                 mtx_init(&(__evq)->lock, (__evq)->lock_name,            \
 419                          NULL, MTX_DEF);                                \
 420         } while (B_FALSE)
 421 #define SFXGE_EVQ_LOCK_DESTROY(_evq)                                    \
 422         mtx_destroy(&(_evq)->lock)
 423 #define SFXGE_EVQ_LOCK(_evq)                                            \
 424         mtx_lock(&(_evq)->lock)
 425 #define SFXGE_EVQ_UNLOCK(_evq)                                          \
 426         mtx_unlock(&(_evq)->lock)
 427 #define SFXGE_EVQ_LOCK_ASSERT_OWNED(_evq)                               \
 428         mtx_assert(&(_evq)->lock, MA_OWNED)
 429
 430 #endif /* _SFXGE_H */