cxgb_adapter.h

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    1 /**************************************************************************
    2 SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3 
    4 Copyright (c) 2007-2009, Chelsio Inc.
    5 All rights reserved.
    6 
    7 Redistribution and use in source and binary forms, with or without
    8 modification, are permitted provided that the following conditions are met:
    9 
   10  1. Redistributions of source code must retain the above copyright notice,
   11     this list of conditions and the following disclaimer.
   12 
   13  2. Neither the name of the Chelsio Corporation nor the names of its
   14     contributors may be used to endorse or promote products derived from
   15     this software without specific prior written permission.
   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, THE
   19 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   20 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
   21 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   22 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   23 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   24 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   25 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   26 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   27 POSSIBILITY OF SUCH DAMAGE.
   28 
   29 $FreeBSD$
   30 
   31 ***************************************************************************/
   32 
   33 
   34 #ifndef _CXGB_ADAPTER_H_
   35 #define _CXGB_ADAPTER_H_
   36 
   37 #include <sys/lock.h>
   38 #include <sys/mutex.h>
   39 #include <sys/rman.h>
   40 #include <sys/mbuf.h>
   41 #include <sys/socket.h>
   42 #include <sys/sockio.h>
   43 #include <sys/condvar.h>
   44 #include <sys/buf_ring.h>
   45 #include <sys/taskqueue.h>
   46 
   47 #include <net/ethernet.h>
   48 #include <net/if.h>
   49 #include <net/if_var.h>
   50 #include <net/if_media.h>
   51 #include <net/if_dl.h>
   52 #include <netinet/in.h>
   53 #include <netinet/tcp_lro.h>
   54 
   55 #include <machine/bus.h>
   56 #include <machine/resource.h>
   57 
   58 #include <dev/pci/pcireg.h>
   59 #include <dev/pci/pcivar.h>
   60 
   61 #include <cxgb_osdep.h>
   62 
   63 struct adapter;
   64 struct sge_qset;
   65 extern int cxgb_debug;
   66 
   67 #ifdef DEBUG_LOCKING
   68 #define MTX_INIT(lock, lockname, class, flags) \
   69         do { \
   70                 printf("initializing %s at %s:%d\n", lockname, __FILE__, __LINE__); \
   71                 mtx_init((lock), lockname, class, flags);               \
   72         } while (0)
   73 
   74 #define MTX_DESTROY(lock) \
   75         do { \
   76                 printf("destroying %s at %s:%d\n", (lock)->lock_object.lo_name, __FILE__, __LINE__); \
   77                 mtx_destroy((lock));                                    \
   78         } while (0)
   79 
   80 #else
   81 #define MTX_INIT mtx_init
   82 #define MTX_DESTROY mtx_destroy
   83 #endif
   84 
   85 enum {
   86         LF_NO = 0,
   87         LF_MAYBE,
   88         LF_YES
   89 };
   90 
   91 struct port_info {
   92         struct adapter  *adapter;
   93         struct ifnet    *ifp;
   94         int             if_flags;
   95         int             flags;
   96         const struct port_type_info *port_type;
   97         struct cphy     phy;
   98         struct cmac     mac;
   99         struct timeval  last_refreshed;
  100         struct link_config link_config;
  101         struct ifmedia  media;
  102         struct mtx      lock;
  103         uint32_t        port_id;
  104         uint32_t        tx_chan;
  105         uint32_t        txpkt_intf;
  106         uint32_t        first_qset;
  107         uint32_t        nqsets;
  108         int             link_fault;
  109 
  110         uint8_t         hw_addr[ETHER_ADDR_LEN];
  111         struct callout  link_check_ch;
  112         struct task     link_check_task;
  113         struct task     timer_reclaim_task;
  114         struct cdev     *port_cdev;
  115 
  116 #define PORT_LOCK_NAME_LEN 32
  117 #define PORT_NAME_LEN 32
  118         char            lockbuf[PORT_LOCK_NAME_LEN];
  119         char            namebuf[PORT_NAME_LEN];
  120 } __aligned(CACHE_LINE_SIZE);
  121 
  122 enum {
  123         /* adapter flags */
  124         FULL_INIT_DONE  = (1 << 0),
  125         USING_MSI       = (1 << 1),
  126         USING_MSIX      = (1 << 2),
  127         QUEUES_BOUND    = (1 << 3),
  128         FW_UPTODATE     = (1 << 4),
  129         TPS_UPTODATE    = (1 << 5),
  130         CXGB_SHUTDOWN   = (1 << 6),
  131         CXGB_OFLD_INIT  = (1 << 7),
  132         TP_PARITY_INIT  = (1 << 8),
  133         CXGB_BUSY       = (1 << 9),
  134         TOM_INIT_DONE   = (1 << 10),
  135 
  136         /* port flags */
  137         DOOMED          = (1 << 0),
  138 };
  139 #define IS_DOOMED(p)    (p->flags & DOOMED)
  140 #define SET_DOOMED(p)   do {p->flags |= DOOMED;} while (0)
  141 #define IS_BUSY(sc)     (sc->flags & CXGB_BUSY)
  142 #define SET_BUSY(sc)    do {sc->flags |= CXGB_BUSY;} while (0)
  143 #define CLR_BUSY(sc)    do {sc->flags &= ~CXGB_BUSY;} while (0)
  144 
  145 #define FL_Q_SIZE       4096
  146 #define JUMBO_Q_SIZE    1024
  147 #define RSPQ_Q_SIZE     2048
  148 #define TX_ETH_Q_SIZE   1024
  149 #define TX_OFLD_Q_SIZE  1024
  150 #define TX_CTRL_Q_SIZE  256
  151 
  152 enum { TXQ_ETH = 0,
  153        TXQ_OFLD = 1,
  154        TXQ_CTRL = 2, };
  155 
  156 
  157 /* 
  158  * work request size in bytes
  159  */
  160 #define WR_LEN (WR_FLITS * 8)
  161 #define PIO_LEN (WR_LEN - sizeof(struct cpl_tx_pkt_lso))
  162 
  163 struct lro_state {
  164         unsigned short enabled;
  165         struct lro_ctrl ctrl;
  166 };
  167 
  168 #define RX_BUNDLE_SIZE 8
  169 
  170 struct rsp_desc;
  171 
  172 struct sge_rspq {
  173         uint32_t        credits;
  174         uint32_t        size;
  175         uint32_t        cidx;
  176         uint32_t        gen;
  177         uint32_t        polling;
  178         uint32_t        holdoff_tmr;
  179         uint32_t        next_holdoff;
  180         uint32_t        imm_data;
  181         uint32_t        async_notif;
  182         uint32_t        cntxt_id;
  183         uint32_t        offload_pkts;
  184         uint32_t        pure_rsps;
  185         uint32_t        unhandled_irqs;
  186         uint32_t        starved;
  187 
  188         bus_addr_t      phys_addr;
  189         bus_dma_tag_t   desc_tag;
  190         bus_dmamap_t    desc_map;
  191 
  192         struct t3_mbuf_hdr rspq_mh;
  193         struct rsp_desc *desc;
  194         struct mtx      lock;
  195 #define RSPQ_NAME_LEN  32
  196         char            lockbuf[RSPQ_NAME_LEN];
  197         uint32_t        rspq_dump_start;
  198         uint32_t        rspq_dump_count;
  199 };
  200 
  201 struct rx_desc;
  202 struct rx_sw_desc;
  203 
  204 struct sge_fl {
  205         uint32_t        buf_size;
  206         uint32_t        credits;
  207         uint32_t        size;
  208         uint32_t        cidx;
  209         uint32_t        pidx;
  210         uint32_t        gen;
  211         uint32_t        db_pending;
  212         bus_addr_t      phys_addr;
  213         uint32_t        cntxt_id;
  214         uint32_t        empty;
  215         bus_dma_tag_t   desc_tag;
  216         bus_dmamap_t    desc_map;
  217         bus_dma_tag_t   entry_tag;
  218         uma_zone_t      zone;
  219         struct rx_desc  *desc;
  220         struct rx_sw_desc *sdesc;
  221         int             type;
  222 };
  223 
  224 struct tx_desc;
  225 struct tx_sw_desc;
  226 
  227 #define TXQ_TRANSMITTING    0x1
  228 
  229 struct sge_txq {
  230         uint64_t        flags;
  231         uint32_t        in_use;
  232         uint32_t        size;
  233         uint32_t        processed;
  234         uint32_t        cleaned;
  235         uint32_t        stop_thres;
  236         uint32_t        cidx;
  237         uint32_t        pidx;
  238         uint32_t        gen;
  239         uint32_t        unacked;
  240         uint32_t        db_pending;
  241         struct tx_desc  *desc;
  242         struct tx_sw_desc *sdesc;
  243         uint32_t        token;
  244         bus_addr_t      phys_addr;
  245         struct task     qresume_task;
  246         struct task     qreclaim_task;
  247         uint32_t        cntxt_id;
  248         uint64_t        stops;
  249         uint64_t        restarts;
  250         bus_dma_tag_t   desc_tag;
  251         bus_dmamap_t    desc_map;
  252         bus_dma_tag_t   entry_tag;
  253         struct mbufq    sendq;
  254 
  255         struct buf_ring *txq_mr;
  256         struct ifaltq   *txq_ifq;
  257         struct callout  txq_timer;
  258         struct callout  txq_watchdog;
  259         uint64_t        txq_coalesced;
  260         uint32_t        txq_skipped;
  261         uint32_t        txq_enqueued;
  262         uint32_t        txq_dump_start;
  263         uint32_t        txq_dump_count;
  264         uint64_t        txq_direct_packets;
  265         uint64_t        txq_direct_bytes;       
  266         uint64_t        txq_frees;
  267         struct sg_ent  txq_sgl[TX_MAX_SEGS / 2 + 1];
  268 };
  269         
  270 #define SGE_PSTAT_MAX (SGE_PSTAT_VLANINS+1)
  271 
  272 #define QS_EXITING              0x1
  273 #define QS_RUNNING              0x2
  274 #define QS_BOUND                0x4
  275 #define QS_FLUSHING             0x8
  276 #define QS_TIMEOUT              0x10
  277 
  278 struct sge_qset {
  279         struct sge_rspq         rspq;
  280         struct sge_fl           fl[SGE_RXQ_PER_SET];
  281         struct lro_state        lro;
  282         struct sge_txq          txq[SGE_TXQ_PER_SET];
  283         uint32_t                txq_stopped;       /* which Tx queues are stopped */
  284         struct port_info        *port;
  285         struct adapter          *adap;
  286         int                     idx; /* qset # */
  287         int                     qs_flags;
  288         int                     coalescing;
  289         struct cv               qs_cv;
  290         struct mtx              lock;
  291 #define QS_NAME_LEN 32
  292         char                    namebuf[QS_NAME_LEN];
  293 };
  294 
  295 struct sge {
  296         struct sge_qset         qs[SGE_QSETS];
  297         struct mtx              reg_lock;
  298 };
  299 
  300 struct filter_info;
  301 
  302 typedef int (*cpl_handler_t)(struct sge_qset *, struct rsp_desc *,
  303     struct mbuf *);
  304 
  305 struct adapter {
  306         SLIST_ENTRY(adapter)    link;
  307         device_t                dev;
  308         int                     flags;
  309 
  310         /* PCI register resources */
  311         int                     regs_rid;
  312         struct resource         *regs_res;
  313         int                     udbs_rid;
  314         struct resource         *udbs_res;
  315         bus_space_handle_t      bh;
  316         bus_space_tag_t         bt;
  317         bus_size_t              mmio_len;
  318         uint32_t                link_width;
  319         
  320         /* DMA resources */
  321         bus_dma_tag_t           parent_dmat;
  322         bus_dma_tag_t           rx_dmat;
  323         bus_dma_tag_t           rx_jumbo_dmat;
  324         bus_dma_tag_t           tx_dmat;
  325 
  326         /* Interrupt resources */
  327         struct resource         *irq_res;
  328         int                     irq_rid;
  329         void                    *intr_tag;
  330 
  331         uint32_t                msix_regs_rid;
  332         struct resource         *msix_regs_res;
  333 
  334         struct resource         *msix_irq_res[SGE_QSETS];
  335         int                     msix_irq_rid[SGE_QSETS];
  336         void                    *msix_intr_tag[SGE_QSETS];
  337         uint8_t                 rxpkt_map[8]; /* maps RX_PKT interface values to port ids */
  338         uint8_t                 rrss_map[SGE_QSETS]; /* revers RSS map table */
  339         uint16_t                rspq_map[RSS_TABLE_SIZE];     /* maps 7-bit cookie to qidx */
  340         union {
  341                 uint8_t                 fill[SGE_QSETS];
  342                 uint64_t                coalesce;
  343         } u;
  344 
  345 #define tunq_fill u.fill
  346 #define tunq_coalesce u.coalesce
  347         
  348         struct filter_info      *filters;
  349         
  350         /* Tasks */
  351         struct task             slow_intr_task;
  352         struct task             tick_task;
  353         struct taskqueue        *tq;
  354         struct callout          cxgb_tick_ch;
  355         struct callout          sge_timer_ch;
  356 
  357         /* Register lock for use by the hardware layer */
  358         struct mtx              mdio_lock;
  359         struct mtx              elmer_lock;
  360 
  361         /* Bookkeeping for the hardware layer */
  362         struct adapter_params  params;
  363         unsigned int slow_intr_mask;
  364         unsigned long irq_stats[IRQ_NUM_STATS];
  365 
  366         unsigned                nqsets;
  367         struct sge              sge;
  368         struct mc7              pmrx;
  369         struct mc7              pmtx;
  370         struct mc7              cm;
  371         struct mc5              mc5;
  372 
  373         struct port_info        port[MAX_NPORTS];
  374         device_t                portdev[MAX_NPORTS];
  375 #ifdef TCP_OFFLOAD
  376         void                    *tom_softc;
  377         void                    *iwarp_softc;
  378 #endif
  379         char                    fw_version[64];
  380         char                    port_types[MAX_NPORTS + 1];
  381         uint32_t                open_device_map;
  382 #ifdef TCP_OFFLOAD
  383         int                     offload_map;
  384 #endif
  385         struct mtx              lock;
  386         driver_intr_t           *cxgb_intr;
  387         int                     msi_count;
  388 
  389 #define ADAPTER_LOCK_NAME_LEN   32
  390         char                    lockbuf[ADAPTER_LOCK_NAME_LEN];
  391         char                    reglockbuf[ADAPTER_LOCK_NAME_LEN];
  392         char                    mdiolockbuf[ADAPTER_LOCK_NAME_LEN];
  393         char                    elmerlockbuf[ADAPTER_LOCK_NAME_LEN];
  394 
  395         int                     timestamp;
  396 
  397 #ifdef TCP_OFFLOAD
  398 #define NUM_CPL_HANDLERS        0xa7
  399         cpl_handler_t cpl_handler[NUM_CPL_HANDLERS] __aligned(CACHE_LINE_SIZE);
  400 #endif
  401 };
  402 
  403 struct t3_rx_mode {
  404         
  405         uint32_t                idx;
  406         struct port_info        *port;
  407 };
  408 
  409 #define MDIO_LOCK(adapter)      mtx_lock(&(adapter)->mdio_lock)
  410 #define MDIO_UNLOCK(adapter)    mtx_unlock(&(adapter)->mdio_lock)
  411 #define ELMR_LOCK(adapter)      mtx_lock(&(adapter)->elmer_lock)
  412 #define ELMR_UNLOCK(adapter)    mtx_unlock(&(adapter)->elmer_lock)
  413 
  414 
  415 #define PORT_LOCK(port)              mtx_lock(&(port)->lock);
  416 #define PORT_UNLOCK(port)            mtx_unlock(&(port)->lock);
  417 #define PORT_LOCK_INIT(port, name)   mtx_init(&(port)->lock, name, 0, MTX_DEF)
  418 #define PORT_LOCK_DEINIT(port)       mtx_destroy(&(port)->lock)
  419 #define PORT_LOCK_ASSERT_NOTOWNED(port) mtx_assert(&(port)->lock, MA_NOTOWNED)
  420 #define PORT_LOCK_ASSERT_OWNED(port) mtx_assert(&(port)->lock, MA_OWNED)
  421 
  422 #define ADAPTER_LOCK(adap)      mtx_lock(&(adap)->lock);
  423 #define ADAPTER_UNLOCK(adap)    mtx_unlock(&(adap)->lock);
  424 #define ADAPTER_LOCK_INIT(adap, name) mtx_init(&(adap)->lock, name, 0, MTX_DEF)
  425 #define ADAPTER_LOCK_DEINIT(adap) mtx_destroy(&(adap)->lock)
  426 #define ADAPTER_LOCK_ASSERT_NOTOWNED(adap) mtx_assert(&(adap)->lock, MA_NOTOWNED)
  427 #define ADAPTER_LOCK_ASSERT_OWNED(adap) mtx_assert(&(adap)->lock, MA_OWNED)
  428 
  429 
  430 static __inline uint32_t
  431 t3_read_reg(adapter_t *adapter, uint32_t reg_addr)
  432 {
  433         return (bus_space_read_4(adapter->bt, adapter->bh, reg_addr));
  434 }
  435 
  436 static __inline void
  437 t3_write_reg(adapter_t *adapter, uint32_t reg_addr, uint32_t val)
  438 {
  439         bus_space_write_4(adapter->bt, adapter->bh, reg_addr, val);
  440 }
  441 
  442 static __inline void
  443 t3_os_pci_read_config_4(adapter_t *adapter, int reg, uint32_t *val)
  444 {
  445         *val = pci_read_config(adapter->dev, reg, 4);
  446 }
  447 
  448 static __inline void
  449 t3_os_pci_write_config_4(adapter_t *adapter, int reg, uint32_t val)
  450 {
  451         pci_write_config(adapter->dev, reg, val, 4);
  452 }
  453 
  454 static __inline void
  455 t3_os_pci_read_config_2(adapter_t *adapter, int reg, uint16_t *val)
  456 {
  457         *val = pci_read_config(adapter->dev, reg, 2);
  458 }
  459 
  460 static __inline void
  461 t3_os_pci_write_config_2(adapter_t *adapter, int reg, uint16_t val)
  462 {
  463         pci_write_config(adapter->dev, reg, val, 2);
  464 }
  465 
  466 static __inline void
  467 t3_init_rx_mode(struct t3_rx_mode *rm, struct port_info *port)
  468 {
  469         rm->idx = 0;
  470         rm->port = port;
  471 }
  472 
  473 static __inline struct port_info *
  474 adap2pinfo(struct adapter *adap, int idx)
  475 {
  476         return &adap->port[idx];
  477 }
  478 
  479 int t3_os_find_pci_capability(adapter_t *adapter, int cap);
  480 int t3_os_pci_save_state(struct adapter *adapter);
  481 int t3_os_pci_restore_state(struct adapter *adapter);
  482 void t3_os_link_intr(struct port_info *);
  483 void t3_os_link_changed(adapter_t *adapter, int port_id, int link_status,
  484                         int speed, int duplex, int fc, int mac_was_reset);
  485 void t3_os_phymod_changed(struct adapter *adap, int port_id);
  486 void t3_sge_err_intr_handler(adapter_t *adapter);
  487 #ifdef TCP_OFFLOAD
  488 int t3_offload_tx(struct adapter *, struct mbuf *);
  489 #endif
  490 void t3_os_set_hw_addr(adapter_t *adapter, int port_idx, u8 hw_addr[]);
  491 int t3_mgmt_tx(adapter_t *adap, struct mbuf *m);
  492 int t3_register_cpl_handler(struct adapter *, int, cpl_handler_t);
  493 
  494 int t3_sge_alloc(struct adapter *);
  495 int t3_sge_free(struct adapter *);
  496 int t3_sge_alloc_qset(adapter_t *, uint32_t, int, int, const struct qset_params *,
  497     int, struct port_info *);
  498 void t3_free_sge_resources(adapter_t *, int);
  499 void t3_sge_start(adapter_t *);
  500 void t3_sge_stop(adapter_t *);
  501 void t3b_intr(void *data);
  502 void t3_intr_msi(void *data);
  503 void t3_intr_msix(void *data);
  504 
  505 int t3_sge_init_adapter(adapter_t *);
  506 int t3_sge_reset_adapter(adapter_t *);
  507 int t3_sge_init_port(struct port_info *);
  508 void t3_free_tx_desc(struct sge_qset *qs, int n, int qid);
  509 
  510 void t3_rx_eth(struct adapter *adap, struct mbuf *m, int ethpad);
  511 
  512 void t3_add_attach_sysctls(adapter_t *sc);
  513 void t3_add_configured_sysctls(adapter_t *sc);
  514 int t3_get_desc(const struct sge_qset *qs, unsigned int qnum, unsigned int idx,
  515     unsigned char *data);
  516 void t3_update_qset_coalesce(struct sge_qset *qs, const struct qset_params *p);
  517 
  518 /*
  519  * XXX figure out how we can return this to being private to sge
  520  */
  521 #define desc_reclaimable(q) ((int)((q)->processed - (q)->cleaned - TX_MAX_DESC))
  522 
  523 #define container_of(p, stype, field) ((stype *)(((uint8_t *)(p)) - offsetof(stype, field)))
  524 
  525 static __inline struct sge_qset *
  526 fl_to_qset(struct sge_fl *q, int qidx)
  527 {
  528         return container_of(q, struct sge_qset, fl[qidx]);
  529 }
  530 
  531 static __inline struct sge_qset *
  532 rspq_to_qset(struct sge_rspq *q)
  533 {
  534         return container_of(q, struct sge_qset, rspq);
  535 }
  536 
  537 static __inline struct sge_qset *
  538 txq_to_qset(struct sge_txq *q, int qidx)
  539 {
  540         return container_of(q, struct sge_qset, txq[qidx]);
  541 }
  542 
  543 #undef container_of
  544 
  545 #define OFFLOAD_DEVMAP_BIT (1 << MAX_NPORTS)
  546 static inline int offload_running(adapter_t *adapter)
  547 {
  548         return isset(&adapter->open_device_map, OFFLOAD_DEVMAP_BIT);
  549 }
  550 
  551 void cxgb_tx_watchdog(void *arg);
  552 int cxgb_transmit(struct ifnet *ifp, struct mbuf *m);
  553 void cxgb_qflush(struct ifnet *ifp);
  554 void t3_iterate(void (*)(struct adapter *, void *), void *);
  555 void cxgb_refresh_stats(struct port_info *);
  556 
  557 #ifdef DEBUGNET
  558 int cxgb_debugnet_encap(struct sge_qset *qs, struct mbuf **m);
  559 int cxgb_debugnet_poll_rx(adapter_t *adap, struct sge_qset *qs);
  560 int cxgb_debugnet_poll_tx(struct sge_qset *qs);
  561 #endif
  562 
  563 #endif
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FreeBSD/Linux Kernel Cross Reference sys/dev/cxgb/cxgb_adapter.h

FreeBSD/Linux Kernel Cross Reference
sys/dev/cxgb/cxgb_adapter.h
