cxgb_adapter.h

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    1 /**************************************************************************
    2 
    3 Copyright (c) 2007, Chelsio Inc.
    4 All rights reserved.
    5 
    6 Redistribution and use in source and binary forms, with or without
    7 modification, are permitted provided that the following conditions are met:
    8 
    9  1. Redistributions of source code must retain the above copyright notice,
   10     this list of conditions and the following disclaimer.
   11 
   12  2. Neither the name of the Chelsio Corporation nor the names of its
   13     contributors may be used to endorse or promote products derived from
   14     this software without specific prior written permission.
   15 
   16 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
   17 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
   20 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   21 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   22 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   23 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   24 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   25 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   26 POSSIBILITY OF SUCH DAMAGE.
   27 
   28 $FreeBSD$
   29 
   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/sx.h>
   40 #include <sys/rman.h>
   41 #include <sys/mbuf.h>
   42 #include <sys/socket.h>
   43 #include <sys/sockio.h>
   44 
   45 #include <net/ethernet.h>
   46 #include <net/if.h>
   47 #include <net/if_media.h>
   48 
   49 #include <machine/bus.h>
   50 #include <machine/resource.h>
   51 #include <sys/bus_dma.h>
   52 #include <dev/pci/pcireg.h>
   53 #include <dev/pci/pcivar.h>
   54 
   55 #ifdef CONFIG_DEFINED
   56 #include <cxgb_osdep.h>
   57 #include <ulp/toecore/toedev.h>
   58 #include <sys/mbufq.h>
   59 #else
   60 #include <dev/cxgb/cxgb_osdep.h>
   61 #include <dev/cxgb/sys/mbufq.h>
   62 #include <dev/cxgb/ulp/toecore/toedev.h>
   63 #endif
   64 
   65 #define USE_SX
   66 
   67 struct adapter;
   68 struct sge_qset;
   69 extern int cxgb_debug;
   70 
   71 #ifdef DEBUG_LOCKING
   72 #define MTX_INIT(lock, lockname, class, flags) \
   73         do { \
   74                 printf("initializing %s at %s:%d\n", lockname, __FILE__, __LINE__); \
   75                 mtx_init((lock), lockname, class, flags);               \
   76         } while (0)
   77 
   78 #define MTX_DESTROY(lock) \
   79         do { \
   80                 printf("destroying %s at %s:%d\n", (lock)->lock_object.lo_name, __FILE__, __LINE__); \
   81                 mtx_destroy((lock));                                    \
   82         } while (0)
   83 
   84 #define SX_INIT(lock, lockname) \
   85         do { \
   86                 printf("initializing %s at %s:%d\n", lockname, __FILE__, __LINE__); \
   87                 sx_init((lock), lockname);              \
   88         } while (0)
   89 
   90 #define SX_DESTROY(lock) \
   91         do { \
   92                 printf("destroying %s at %s:%d\n", (lock)->lock_object.lo_name, __FILE__, __LINE__); \
   93                 sx_destroy((lock));                                     \
   94         } while (0)
   95 #else
   96 #define MTX_INIT mtx_init
   97 #define MTX_DESTROY mtx_destroy
   98 #define SX_INIT sx_init
   99 #define SX_DESTROY sx_destroy
  100 #endif
  101 
  102 struct port_info {
  103         struct adapter  *adapter;
  104         struct ifnet    *ifp;
  105         int             if_flags;
  106         const struct port_type_info *port_type;
  107         struct cphy     phy;
  108         struct cmac     mac;
  109         struct link_config link_config;
  110         struct ifmedia  media;
  111 #ifdef USE_SX   
  112         struct sx       lock;
  113 #else   
  114         struct mtx      lock;
  115 #endif  
  116         uint8_t         port_id;
  117         uint8_t         tx_chan;
  118         uint8_t         txpkt_intf;
  119         uint8_t         nqsets;
  120         uint8_t         first_qset;
  121         
  122         uint8_t         hw_addr[ETHER_ADDR_LEN];
  123         struct taskqueue *tq;
  124         struct task     start_task;
  125         struct task     timer_reclaim_task;
  126         struct cdev     *port_cdev;
  127 
  128 #define PORT_NAME_LEN 32
  129 #define TASKQ_NAME_LEN 32
  130         char            lockbuf[PORT_NAME_LEN];
  131         char            taskqbuf[TASKQ_NAME_LEN];
  132 };
  133 
  134 enum {                          /* adapter flags */
  135         FULL_INIT_DONE  = (1 << 0),
  136         USING_MSI       = (1 << 1),
  137         USING_MSIX      = (1 << 2),
  138         QUEUES_BOUND    = (1 << 3),
  139         FW_UPTODATE     = (1 << 4),
  140         TPS_UPTODATE    = (1 << 5),
  141 };
  142 
  143 
  144 #define FL_Q_SIZE       4096
  145 #define JUMBO_Q_SIZE    512
  146 #define RSPQ_Q_SIZE     1024
  147 #define TX_ETH_Q_SIZE   1024
  148 
  149 
  150 
  151 /*
  152  * Types of Tx queues in each queue set.  Order here matters, do not change.
  153  * XXX TOE is not implemented yet, so the extra queues are just placeholders.
  154  */
  155 enum { TXQ_ETH, TXQ_OFLD, TXQ_CTRL };
  156 
  157 
  158 /* careful, the following are set on priv_flags and must not collide with
  159  * IFF_ flags!
  160  */
  161 enum {
  162         LRO_ACTIVE = (1 << 8),
  163 };
  164 
  165 /* Max concurrent LRO sessions per queue set */
  166 #define MAX_LRO_SES 8
  167 
  168 struct t3_lro_session {
  169         struct mbuf *head;
  170         struct mbuf *tail;
  171         uint32_t seq;
  172         uint16_t ip_len;
  173         uint16_t mss;
  174         uint16_t vtag;
  175         uint8_t npkts;
  176 };
  177 
  178 struct lro_state {
  179         unsigned short enabled;
  180         unsigned short active_idx;
  181         unsigned int nactive;
  182         struct t3_lro_session sess[MAX_LRO_SES];
  183 };
  184 
  185 #define RX_BUNDLE_SIZE 8
  186 
  187 struct rsp_desc;
  188 
  189 struct sge_rspq {
  190         uint32_t        credits;
  191         uint32_t        size;
  192         uint32_t        cidx;
  193         uint32_t        gen;
  194         uint32_t        polling;
  195         uint32_t        holdoff_tmr;
  196         uint32_t        next_holdoff;
  197         uint32_t        imm_data;
  198         struct rsp_desc *desc;
  199         uint32_t        cntxt_id;
  200         struct mtx      lock;
  201         struct mbuf     *rx_head;    /* offload packet receive queue head */
  202         struct mbuf     *rx_tail;    /* offload packet receive queue tail */
  203 
  204         uint32_t        offload_pkts;
  205         uint32_t        offload_bundles;
  206         uint32_t        pure_rsps;
  207         uint32_t        unhandled_irqs;
  208 
  209         bus_addr_t      phys_addr;
  210         bus_dma_tag_t   desc_tag;
  211         bus_dmamap_t    desc_map;
  212 
  213         struct t3_mbuf_hdr rspq_mh;
  214 #define RSPQ_NAME_LEN  32
  215         char            lockbuf[RSPQ_NAME_LEN];
  216 
  217 };
  218 
  219 #ifndef DISABLE_MBUF_IOVEC
  220 #define rspq_mbuf rspq_mh.mh_head
  221 #endif
  222 
  223 struct rx_desc;
  224 struct rx_sw_desc;
  225 
  226 struct sge_fl {
  227         uint32_t        buf_size;
  228         uint32_t        credits;
  229         uint32_t        size;
  230         uint32_t        cidx;
  231         uint32_t        pidx;
  232         uint32_t        gen;
  233         struct rx_desc  *desc;
  234         struct rx_sw_desc *sdesc;
  235         bus_addr_t      phys_addr;
  236         uint32_t        cntxt_id;
  237         uint64_t        empty;
  238         bus_dma_tag_t   desc_tag;
  239         bus_dmamap_t    desc_map;
  240         bus_dma_tag_t   entry_tag;
  241         uma_zone_t      zone;
  242         int             type;
  243 };
  244 
  245 struct tx_desc;
  246 struct tx_sw_desc;
  247 
  248 #define TXQ_TRANSMITTING    0x1
  249 
  250 struct sge_txq {
  251         uint64_t        flags;
  252         uint32_t        in_use;
  253         uint32_t        size;
  254         uint32_t        processed;
  255         uint32_t        cleaned;
  256         uint32_t        stop_thres;
  257         uint32_t        cidx;
  258         uint32_t        pidx;
  259         uint32_t        gen;
  260         uint32_t        unacked;
  261         struct tx_desc  *desc;
  262         struct tx_sw_desc *sdesc;
  263         uint32_t        token;
  264         bus_addr_t      phys_addr;
  265         struct task     qresume_task;
  266         struct task     qreclaim_task;
  267         struct port_info *port;
  268         uint32_t        cntxt_id;
  269         uint64_t        stops;
  270         uint64_t        restarts;
  271         bus_dma_tag_t   desc_tag;
  272         bus_dmamap_t    desc_map;
  273         bus_dma_tag_t   entry_tag;
  274         struct mbuf_head sendq;
  275         struct mtx      lock;
  276 #define TXQ_NAME_LEN  32
  277         char            lockbuf[TXQ_NAME_LEN];
  278 };
  279         
  280 
  281 enum {
  282         SGE_PSTAT_TSO,              /* # of TSO requests */
  283         SGE_PSTAT_RX_CSUM_GOOD,     /* # of successful RX csum offloads */
  284         SGE_PSTAT_TX_CSUM,          /* # of TX checksum offloads */
  285         SGE_PSTAT_VLANEX,           /* # of VLAN tag extractions */
  286         SGE_PSTAT_VLANINS,          /* # of VLAN tag insertions */
  287         SGE_PSTATS_LRO_QUEUED,      /* # of LRO appended packets */
  288         SGE_PSTATS_LRO_FLUSHED,     /* # of LRO flushed packets */
  289         SGE_PSTATS_LRO_X_STREAMS,   /* # of exceeded LRO contexts */
  290 };
  291 
  292 #define SGE_PSTAT_MAX (SGE_PSTATS_LRO_X_STREAMS+1)
  293 
  294 struct sge_qset {
  295         struct sge_rspq         rspq;
  296         struct sge_fl           fl[SGE_RXQ_PER_SET];
  297         struct lro_state        lro;
  298         struct sge_txq          txq[SGE_TXQ_PER_SET];
  299         uint32_t                txq_stopped;       /* which Tx queues are stopped */
  300         uint64_t                port_stats[SGE_PSTAT_MAX];
  301         struct port_info        *port;
  302         int                     idx; /* qset # */
  303 };
  304 
  305 struct sge {
  306         struct sge_qset         qs[SGE_QSETS];
  307         struct mtx              reg_lock;
  308 };
  309 
  310 struct filter_info;
  311 
  312 struct adapter {
  313         device_t                dev;
  314         int                     flags;
  315         TAILQ_ENTRY(adapter)    adapter_entry;
  316         
  317         /* PCI register resources */
  318         int                     regs_rid;
  319         struct resource         *regs_res;
  320         bus_space_handle_t      bh;
  321         bus_space_tag_t         bt;
  322         bus_size_t              mmio_len;
  323         uint32_t                link_width;
  324         
  325         /* DMA resources */
  326         bus_dma_tag_t           parent_dmat;
  327         bus_dma_tag_t           rx_dmat;
  328         bus_dma_tag_t           rx_jumbo_dmat;
  329         bus_dma_tag_t           tx_dmat;
  330 
  331         /* Interrupt resources */
  332         struct resource         *irq_res;
  333         int                     irq_rid;
  334         void                    *intr_tag;
  335 
  336         uint32_t                msix_regs_rid;
  337         struct resource         *msix_regs_res;
  338 
  339         struct resource         *msix_irq_res[SGE_QSETS];
  340         int                     msix_irq_rid[SGE_QSETS];
  341         void                    *msix_intr_tag[SGE_QSETS];
  342         uint8_t                 rxpkt_map[8]; /* maps RX_PKT interface values to port ids */
  343         uint8_t                 rrss_map[SGE_QSETS]; /* revers RSS map table */
  344 
  345         struct filter_info      *filters;
  346         
  347         /* Tasks */
  348         struct task             ext_intr_task;
  349         struct task             slow_intr_task;
  350         struct task             tick_task;
  351         struct task             process_responses_task;
  352         struct taskqueue        *tq;
  353         struct callout          cxgb_tick_ch;
  354         struct callout          sge_timer_ch;
  355 
  356         /* Register lock for use by the hardware layer */
  357         struct mtx              mdio_lock;
  358         struct mtx              elmer_lock;
  359 
  360         /* Bookkeeping for the hardware layer */
  361         struct adapter_params  params;
  362         unsigned int slow_intr_mask;
  363         unsigned long irq_stats[IRQ_NUM_STATS];
  364 
  365         struct sge              sge;
  366         struct mc7              pmrx;
  367         struct mc7              pmtx;
  368         struct mc7              cm;
  369         struct mc5              mc5;
  370 
  371         struct port_info        port[MAX_NPORTS];
  372         device_t                portdev[MAX_NPORTS];
  373         struct toedev           tdev;
  374         char                    fw_version[64];
  375         uint32_t                open_device_map;
  376         uint32_t                registered_device_map;
  377 #ifdef USE_SX
  378         struct sx               lock;
  379 #else   
  380         struct mtx              lock;
  381 #endif  
  382         driver_intr_t           *cxgb_intr;
  383         int                     msi_count;
  384 
  385 #define ADAPTER_LOCK_NAME_LEN   32
  386         char                    lockbuf[ADAPTER_LOCK_NAME_LEN];
  387         char                    reglockbuf[ADAPTER_LOCK_NAME_LEN];
  388         char                    mdiolockbuf[ADAPTER_LOCK_NAME_LEN];
  389         char                    elmerlockbuf[ADAPTER_LOCK_NAME_LEN];
  390 };
  391 
  392 struct t3_rx_mode {
  393         
  394         uint32_t                idx;
  395         struct port_info        *port;
  396 };
  397 
  398 
  399 #define MDIO_LOCK(adapter)      mtx_lock(&(adapter)->mdio_lock)
  400 #define MDIO_UNLOCK(adapter)    mtx_unlock(&(adapter)->mdio_lock)
  401 #define ELMR_LOCK(adapter)      mtx_lock(&(adapter)->elmer_lock)
  402 #define ELMR_UNLOCK(adapter)    mtx_unlock(&(adapter)->elmer_lock)
  403 
  404 
  405 #ifdef USE_SX
  406 #define PORT_LOCK(port)              sx_xlock(&(port)->lock);
  407 #define PORT_UNLOCK(port)            sx_xunlock(&(port)->lock);
  408 #define PORT_LOCK_INIT(port, name)   SX_INIT(&(port)->lock, name)
  409 #define PORT_LOCK_DEINIT(port)       SX_DESTROY(&(port)->lock)
  410 #define PORT_LOCK_ASSERT_OWNED(port) sx_assert(&(port)->lock, SA_LOCKED)
  411 
  412 #define ADAPTER_LOCK(adap)                 sx_xlock(&(adap)->lock);
  413 #define ADAPTER_UNLOCK(adap)               sx_xunlock(&(adap)->lock);
  414 #define ADAPTER_LOCK_INIT(adap, name)      SX_INIT(&(adap)->lock, name)
  415 #define ADAPTER_LOCK_DEINIT(adap)          SX_DESTROY(&(adap)->lock)
  416 #define ADAPTER_LOCK_ASSERT_NOTOWNED(adap) sx_assert(&(adap)->lock, SA_UNLOCKED)
  417 #else
  418 #define PORT_LOCK(port)              mtx_lock(&(port)->lock);
  419 #define PORT_UNLOCK(port)            mtx_unlock(&(port)->lock);
  420 #define PORT_LOCK_INIT(port, name)   mtx_init(&(port)->lock, name, 0, MTX_DEF)
  421 #define PORT_LOCK_DEINIT(port)       mtx_destroy(&(port)->lock)
  422 #define PORT_LOCK_ASSERT_OWNED(port) mtx_assert(&(port)->lock, MA_OWNED)
  423 
  424 #define ADAPTER_LOCK(adap)      mtx_lock(&(adap)->lock);
  425 #define ADAPTER_UNLOCK(adap)    mtx_unlock(&(adap)->lock);
  426 #define ADAPTER_LOCK_INIT(adap, name) mtx_init(&(adap)->lock, name, 0, MTX_DEF)
  427 #define ADAPTER_LOCK_DEINIT(adap) mtx_destroy(&(adap)->lock)
  428 #define ADAPTER_LOCK_ASSERT_NOTOWNED(adap) mtx_assert(&(adap)->lock, MO_NOTOWNED)
  429 #endif
  430 
  431 
  432 static __inline uint32_t
  433 t3_read_reg(adapter_t *adapter, uint32_t reg_addr)
  434 {
  435         return (bus_space_read_4(adapter->bt, adapter->bh, reg_addr));
  436 }
  437 
  438 static __inline void
  439 t3_write_reg(adapter_t *adapter, uint32_t reg_addr, uint32_t val)
  440 {
  441         bus_space_write_4(adapter->bt, adapter->bh, reg_addr, val);
  442 }
  443 
  444 static __inline void
  445 t3_os_pci_read_config_4(adapter_t *adapter, int reg, uint32_t *val)
  446 {
  447         *val = pci_read_config(adapter->dev, reg, 4);
  448 }
  449 
  450 static __inline void
  451 t3_os_pci_write_config_4(adapter_t *adapter, int reg, uint32_t val)
  452 {
  453         pci_write_config(adapter->dev, reg, val, 4);
  454 }
  455 
  456 static __inline void
  457 t3_os_pci_read_config_2(adapter_t *adapter, int reg, uint16_t *val)
  458 {
  459         *val = pci_read_config(adapter->dev, reg, 2);
  460 }
  461 
  462 static __inline void
  463 t3_os_pci_write_config_2(adapter_t *adapter, int reg, uint16_t val)
  464 {
  465         pci_write_config(adapter->dev, reg, val, 2);
  466 }
  467 
  468 static __inline uint8_t *
  469 t3_get_next_mcaddr(struct t3_rx_mode *rm)
  470 {
  471         uint8_t *macaddr = NULL;
  472         
  473         if (rm->idx == 0)
  474                 macaddr = rm->port->hw_addr;
  475 
  476         rm->idx++;
  477         return (macaddr);
  478 }
  479 
  480 static __inline void
  481 t3_init_rx_mode(struct t3_rx_mode *rm, struct port_info *port)
  482 {
  483         rm->idx = 0;
  484         rm->port = port;
  485 }
  486 
  487 static __inline struct port_info *
  488 adap2pinfo(struct adapter *adap, int idx)
  489 {
  490         return &adap->port[idx];
  491 }
  492 
  493 int t3_os_find_pci_capability(adapter_t *adapter, int cap);
  494 int t3_os_pci_save_state(struct adapter *adapter);
  495 int t3_os_pci_restore_state(struct adapter *adapter);
  496 void t3_os_link_changed(adapter_t *adapter, int port_id, int link_status,
  497                         int speed, int duplex, int fc);
  498 void t3_sge_err_intr_handler(adapter_t *adapter);
  499 int t3_offload_tx(struct toedev *, struct mbuf *);
  500 void t3_os_ext_intr_handler(adapter_t *adapter);
  501 void t3_os_set_hw_addr(adapter_t *adapter, int port_idx, u8 hw_addr[]);
  502 int t3_mgmt_tx(adapter_t *adap, struct mbuf *m);
  503 
  504 
  505 int t3_sge_alloc(struct adapter *);
  506 int t3_sge_free(struct adapter *);
  507 int t3_sge_alloc_qset(adapter_t *, uint32_t, int, int, const struct qset_params *,
  508     int, struct port_info *);
  509 void t3_free_sge_resources(adapter_t *);
  510 void t3_sge_start(adapter_t *);
  511 void t3_sge_stop(adapter_t *);
  512 void t3b_intr(void *data);
  513 void t3_intr_msi(void *data);
  514 void t3_intr_msix(void *data);
  515 int t3_encap(struct port_info *, struct mbuf **, int *free);
  516 
  517 int t3_sge_init_adapter(adapter_t *);
  518 int t3_sge_init_port(struct port_info *);
  519 void t3_sge_deinit_sw(adapter_t *);
  520 
  521 void t3_rx_eth_lro(adapter_t *adap, struct sge_rspq *rq, struct mbuf *m,
  522     int ethpad, uint32_t rss_hash, uint32_t rss_csum, int lro);
  523 void t3_rx_eth(struct adapter *adap, struct sge_rspq *rq, struct mbuf *m, int ethpad);
  524 void t3_lro_flush(adapter_t *adap, struct sge_qset *qs, struct lro_state *state);
  525 
  526 void t3_add_sysctls(adapter_t *sc);
  527 int t3_get_desc(const struct sge_qset *qs, unsigned int qnum, unsigned int idx,
  528     unsigned char *data);
  529 void t3_update_qset_coalesce(struct sge_qset *qs, const struct qset_params *p);
  530 /*
  531  * XXX figure out how we can return this to being private to sge
  532  */
  533 #define desc_reclaimable(q) ((int)((q)->processed - (q)->cleaned - TX_MAX_DESC))
  534 
  535 #define container_of(p, stype, field) ((stype *)(((uint8_t *)(p)) - offsetof(stype, field))) 
  536 
  537 static __inline struct sge_qset *
  538 fl_to_qset(struct sge_fl *q, int qidx)
  539 {
  540         return container_of(q, struct sge_qset, fl[qidx]);
  541 }
  542 
  543 static __inline struct sge_qset *
  544 rspq_to_qset(struct sge_rspq *q)
  545 {
  546         return container_of(q, struct sge_qset, rspq);
  547 }
  548 
  549 static __inline struct sge_qset *
  550 txq_to_qset(struct sge_txq *q, int qidx)
  551 {
  552         return container_of(q, struct sge_qset, txq[qidx]);
  553 }
  554 
  555 static __inline struct adapter *
  556 tdev2adap(struct toedev *d)
  557 {
  558         return container_of(d, struct adapter, tdev);
  559 }
  560 
  561 #undef container_of
  562 
  563 #define OFFLOAD_DEVMAP_BIT 15
  564 static inline int offload_running(adapter_t *adapter)
  565 {
  566         return isset(&adapter->open_device_map, OFFLOAD_DEVMAP_BIT);
  567 }
  568 
  569 
  570 #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
