drivers/infiniband/hw/qib/qib_verbs.h

   1 /*
   2  * Copyright (c) 2012, 2013 Intel Corporation.  All rights reserved.
   3  * Copyright (c) 2006 - 2012 QLogic Corporation. All rights reserved.
   4  * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved.
   5  *
   6  * This software is available to you under a choice of one of two
   7  * licenses.  You may choose to be licensed under the terms of the GNU
   8  * General Public License (GPL) Version 2, available from the file
   9  * COPYING in the main directory of this source tree, or the
  10  * OpenIB.org BSD license below:
  11  *
  12  *     Redistribution and use in source and binary forms, with or
  13  *     without modification, are permitted provided that the following
  14  *     conditions are met:
  15  *
  16  *      - Redistributions of source code must retain the above
  17  *        copyright notice, this list of conditions and the following
  18  *        disclaimer.
  19  *
  20  *      - Redistributions in binary form must reproduce the above
  21  *        copyright notice, this list of conditions and the following
  22  *        disclaimer in the documentation and/or other materials
  23  *        provided with the distribution.
  24  *
  25  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  26  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  27  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  28  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  29  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  30  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  31  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  32  * SOFTWARE.
  33  */
  34
  35 #ifndef QIB_VERBS_H
  36 #define QIB_VERBS_H
  37
  38 #include <linux/types.h>
  39 #include <linux/spinlock.h>
  40 #include <linux/kernel.h>
  41 #include <linux/interrupt.h>
  42 #include <linux/kref.h>
  43 #include <linux/workqueue.h>
  44 #include <linux/kthread.h>
  45 #include <linux/completion.h>
  46 #include <rdma/ib_pack.h>
  47 #include <rdma/ib_user_verbs.h>
  48 #include <rdma/rdma_vt.h>
  49
  50 struct qib_ctxtdata;
  51 struct qib_pportdata;
  52 struct qib_devdata;
  53 struct qib_verbs_txreq;
  54
  55 #define QIB_MAX_RDMA_ATOMIC     16
  56 #define QIB_GUIDS_PER_PORT      5
  57
  58 #define QPN_MAX                 (1 << 24)
  59 #define QPNMAP_ENTRIES          (QPN_MAX / PAGE_SIZE / BITS_PER_BYTE)
  60
  61 /*
  62  * Increment this value if any changes that break userspace ABI
  63  * compatibility are made.
  64  */
  65 #define QIB_UVERBS_ABI_VERSION       2
  66
  67 /*
  68  * Define an ib_cq_notify value that is not valid so we know when CQ
  69  * notifications are armed.
  70  */
  71 #define IB_CQ_NONE      (IB_CQ_NEXT_COMP + 1)
  72
  73 #define IB_SEQ_NAK      (3 << 29)
  74
  75 /* AETH NAK opcode values */
  76 #define IB_RNR_NAK                      0x20
  77 #define IB_NAK_PSN_ERROR                0x60
  78 #define IB_NAK_INVALID_REQUEST          0x61
  79 #define IB_NAK_REMOTE_ACCESS_ERROR      0x62
  80 #define IB_NAK_REMOTE_OPERATIONAL_ERROR 0x63
  81 #define IB_NAK_INVALID_RD_REQUEST       0x64
  82
  83 /* Flags for checking QP state (see ib_qib_state_ops[]) */
  84 #define QIB_POST_SEND_OK                0x01
  85 #define QIB_POST_RECV_OK                0x02
  86 #define QIB_PROCESS_RECV_OK             0x04
  87 #define QIB_PROCESS_SEND_OK             0x08
  88 #define QIB_PROCESS_NEXT_SEND_OK        0x10
  89 #define QIB_FLUSH_SEND                  0x20
  90 #define QIB_FLUSH_RECV                  0x40
  91 #define QIB_PROCESS_OR_FLUSH_SEND \
  92         (QIB_PROCESS_SEND_OK | QIB_FLUSH_SEND)
  93
  94 /* IB Performance Manager status values */
  95 #define IB_PMA_SAMPLE_STATUS_DONE       0x00
  96 #define IB_PMA_SAMPLE_STATUS_STARTED    0x01
  97 #define IB_PMA_SAMPLE_STATUS_RUNNING    0x02
  98
  99 /* Mandatory IB performance counter select values. */
 100 #define IB_PMA_PORT_XMIT_DATA   cpu_to_be16(0x0001)
 101 #define IB_PMA_PORT_RCV_DATA    cpu_to_be16(0x0002)
 102 #define IB_PMA_PORT_XMIT_PKTS   cpu_to_be16(0x0003)
 103 #define IB_PMA_PORT_RCV_PKTS    cpu_to_be16(0x0004)
 104 #define IB_PMA_PORT_XMIT_WAIT   cpu_to_be16(0x0005)
 105
 106 #define QIB_VENDOR_IPG          cpu_to_be16(0xFFA0)
 107
 108 #define IB_BTH_REQ_ACK          (1 << 31)
 109 #define IB_BTH_SOLICITED        (1 << 23)
 110 #define IB_BTH_MIG_REQ          (1 << 22)
 111
 112 /* XXX Should be defined in ib_verbs.h enum ib_port_cap_flags */
 113 #define IB_PORT_OTHER_LOCAL_CHANGES_SUP (1 << 26)
 114
 115 #define IB_GRH_VERSION          6
 116 #define IB_GRH_VERSION_MASK     0xF
 117 #define IB_GRH_VERSION_SHIFT    28
 118 #define IB_GRH_TCLASS_MASK      0xFF
 119 #define IB_GRH_TCLASS_SHIFT     20
 120 #define IB_GRH_FLOW_MASK        0xFFFFF
 121 #define IB_GRH_FLOW_SHIFT       0
 122 #define IB_GRH_NEXT_HDR         0x1B
 123
 124 #define IB_DEFAULT_GID_PREFIX   cpu_to_be64(0xfe80000000000000ULL)
 125
 126 /* Values for set/get portinfo VLCap OperationalVLs */
 127 #define IB_VL_VL0       1
 128 #define IB_VL_VL0_1     2
 129 #define IB_VL_VL0_3     3
 130 #define IB_VL_VL0_7     4
 131 #define IB_VL_VL0_14    5
 132
 133 static inline int qib_num_vls(int vls)
 134 {
 135         switch (vls) {
 136         default:
 137         case IB_VL_VL0:
 138                 return 1;
 139         case IB_VL_VL0_1:
 140                 return 2;
 141         case IB_VL_VL0_3:
 142                 return 4;
 143         case IB_VL_VL0_7:
 144                 return 8;
 145         case IB_VL_VL0_14:
 146                 return 15;
 147         }
 148 }
 149
 150 struct ib_reth {
 151         __be64 vaddr;
 152         __be32 rkey;
 153         __be32 length;
 154 } __packed;
 155
 156 struct ib_atomic_eth {
 157         __be32 vaddr[2];        /* unaligned so access as 2 32-bit words */
 158         __be32 rkey;
 159         __be64 swap_data;
 160         __be64 compare_data;
 161 } __packed;
 162
 163 struct qib_other_headers {
 164         __be32 bth[3];
 165         union {
 166                 struct {
 167                         __be32 deth[2];
 168                         __be32 imm_data;
 169                 } ud;
 170                 struct {
 171                         struct ib_reth reth;
 172                         __be32 imm_data;
 173                 } rc;
 174                 struct {
 175                         __be32 aeth;
 176                         __be32 atomic_ack_eth[2];
 177                 } at;
 178                 __be32 imm_data;
 179                 __be32 aeth;
 180                 struct ib_atomic_eth atomic_eth;
 181         } u;
 182 } __packed;
 183
 184 /*
 185  * Note that UD packets with a GRH header are 8+40+12+8 = 68 bytes
 186  * long (72 w/ imm_data).  Only the first 56 bytes of the IB header
 187  * will be in the eager header buffer.  The remaining 12 or 16 bytes
 188  * are in the data buffer.
 189  */
 190 struct qib_ib_header {
 191         __be16 lrh[4];
 192         union {
 193                 struct {
 194                         struct ib_grh grh;
 195                         struct qib_other_headers oth;
 196                 } l;
 197                 struct qib_other_headers oth;
 198         } u;
 199 } __packed;
 200
 201 struct qib_pio_header {
 202         __le32 pbc[2];
 203         struct qib_ib_header hdr;
 204 } __packed;
 205
 206 /*
 207  * There is one struct qib_mcast for each multicast GID.
 208  * All attached QPs are then stored as a list of
 209  * struct qib_mcast_qp.
 210  */
 211 struct qib_mcast_qp {
 212         struct list_head list;
 213         struct rvt_qp *qp;
 214 };
 215
 216 struct qib_mcast {
 217         struct rb_node rb_node;
 218         union ib_gid mgid;
 219         struct list_head qp_list;
 220         wait_queue_head_t wait;
 221         atomic_t refcount;
 222         int n_attached;
 223 };
 224
 225 /*
 226  * This structure is used to contain the head pointer, tail pointer,
 227  * and completion queue entries as a single memory allocation so
 228  * it can be mmap'ed into user space.
 229  */
 230 struct qib_cq_wc {
 231         u32 head;               /* index of next entry to fill */
 232         u32 tail;               /* index of next ib_poll_cq() entry */
 233         union {
 234                 /* these are actually size ibcq.cqe + 1 */
 235                 struct ib_uverbs_wc uqueue[0];
 236                 struct ib_wc kqueue[0];
 237         };
 238 };
 239
 240 /*
 241  * The completion queue structure.
 242  */
 243 struct qib_cq {
 244         struct ib_cq ibcq;
 245         struct kthread_work comptask;
 246         struct qib_devdata *dd;
 247         spinlock_t lock; /* protect changes in this struct */
 248         u8 notify;
 249         u8 triggered;
 250         struct qib_cq_wc *queue;
 251         struct rvt_mmap_info *ip;
 252 };
 253
 254 /*
 255  * qib specific data structure that will be hidden from rvt after the queue pair
 256  * is made common.
 257  */
 258 struct qib_qp_priv {
 259         struct qib_ib_header *s_hdr;    /* next packet header to send */
 260         struct list_head iowait;        /* link for wait PIO buf */
 261         atomic_t s_dma_busy;
 262         struct qib_verbs_txreq *s_tx;
 263         struct work_struct s_work;
 264         wait_queue_head_t wait_dma;
 265         struct rvt_qp *owner;
 266 };
 267
 268 /*
 269  * Atomic bit definitions for r_aflags.
 270  */
 271 #define QIB_R_WRID_VALID        0
 272 #define QIB_R_REWIND_SGE        1
 273
 274 /*
 275  * Bit definitions for r_flags.
 276  */
 277 #define QIB_R_REUSE_SGE 0x01
 278 #define QIB_R_RDMAR_SEQ 0x02
 279 #define QIB_R_RSP_NAK   0x04
 280 #define QIB_R_RSP_SEND  0x08
 281 #define QIB_R_COMM_EST  0x10
 282
 283 /*
 284  * Bit definitions for s_flags.
 285  *
 286  * QIB_S_SIGNAL_REQ_WR - set if QP send WRs contain completion signaled
 287  * QIB_S_BUSY - send tasklet is processing the QP
 288  * QIB_S_TIMER - the RC retry timer is active
 289  * QIB_S_ACK_PENDING - an ACK is waiting to be sent after RDMA read/atomics
 290  * QIB_S_WAIT_FENCE - waiting for all prior RDMA read or atomic SWQEs
 291  *                         before processing the next SWQE
 292  * QIB_S_WAIT_RDMAR - waiting for a RDMA read or atomic SWQE to complete
 293  *                         before processing the next SWQE
 294  * QIB_S_WAIT_RNR - waiting for RNR timeout
 295  * QIB_S_WAIT_SSN_CREDIT - waiting for RC credits to process next SWQE
 296  * QIB_S_WAIT_DMA - waiting for send DMA queue to drain before generating
 297  *                  next send completion entry not via send DMA
 298  * QIB_S_WAIT_PIO - waiting for a send buffer to be available
 299  * QIB_S_WAIT_TX - waiting for a struct qib_verbs_txreq to be available
 300  * QIB_S_WAIT_DMA_DESC - waiting for DMA descriptors to be available
 301  * QIB_S_WAIT_KMEM - waiting for kernel memory to be available
 302  * QIB_S_WAIT_PSN - waiting for a packet to exit the send DMA queue
 303  * QIB_S_WAIT_ACK - waiting for an ACK packet before sending more requests
 304  * QIB_S_SEND_ONE - send one packet, request ACK, then wait for ACK
 305  */
 306 #define QIB_S_SIGNAL_REQ_WR     0x0001
 307 #define QIB_S_BUSY              0x0002
 308 #define QIB_S_TIMER             0x0004
 309 #define QIB_S_RESP_PENDING      0x0008
 310 #define QIB_S_ACK_PENDING       0x0010
 311 #define QIB_S_WAIT_FENCE        0x0020
 312 #define QIB_S_WAIT_RDMAR        0x0040
 313 #define QIB_S_WAIT_RNR          0x0080
 314 #define QIB_S_WAIT_SSN_CREDIT   0x0100
 315 #define QIB_S_WAIT_DMA          0x0200
 316 #define QIB_S_WAIT_PIO          0x0400
 317 #define QIB_S_WAIT_TX           0x0800
 318 #define QIB_S_WAIT_DMA_DESC     0x1000
 319 #define QIB_S_WAIT_KMEM         0x2000
 320 #define QIB_S_WAIT_PSN          0x4000
 321 #define QIB_S_WAIT_ACK          0x8000
 322 #define QIB_S_SEND_ONE          0x10000
 323 #define QIB_S_UNLIMITED_CREDIT  0x20000
 324
 325 /*
 326  * Wait flags that would prevent any packet type from being sent.
 327  */
 328 #define QIB_S_ANY_WAIT_IO (QIB_S_WAIT_PIO | QIB_S_WAIT_TX | \
 329         QIB_S_WAIT_DMA_DESC | QIB_S_WAIT_KMEM)
 330
 331 /*
 332  * Wait flags that would prevent send work requests from making progress.
 333  */
 334 #define QIB_S_ANY_WAIT_SEND (QIB_S_WAIT_FENCE | QIB_S_WAIT_RDMAR | \
 335         QIB_S_WAIT_RNR | QIB_S_WAIT_SSN_CREDIT | QIB_S_WAIT_DMA | \
 336         QIB_S_WAIT_PSN | QIB_S_WAIT_ACK)
 337
 338 #define QIB_S_ANY_WAIT (QIB_S_ANY_WAIT_IO | QIB_S_ANY_WAIT_SEND)
 339
 340 #define QIB_PSN_CREDIT  16
 341
 342 /*
 343  * Since struct rvt_swqe is not a fixed size, we can't simply index into
 344  * struct rvt_qp.s_wq.  This function does the array index computation.
 345  */
 346 static inline struct rvt_swqe *get_swqe_ptr(struct rvt_qp *qp,
 347                                             unsigned n)
 348 {
 349         return (struct rvt_swqe *)((char *)qp->s_wq +
 350                                      (sizeof(struct rvt_swqe) +
 351                                       qp->s_max_sge *
 352                                       sizeof(struct rvt_sge)) * n);
 353 }
 354
 355 /*
 356  * Since struct rvt_rwqe is not a fixed size, we can't simply index into
 357  * struct rvt_rwq.wq.  This function does the array index computation.
 358  */
 359 static inline struct rvt_rwqe *get_rwqe_ptr(struct rvt_rq *rq, unsigned n)
 360 {
 361         return (struct rvt_rwqe *)
 362                 ((char *) rq->wq->wq +
 363                  (sizeof(struct rvt_rwqe) +
 364                   rq->max_sge * sizeof(struct ib_sge)) * n);
 365 }
 366
 367 /*
 368  * QPN-map pages start out as NULL, they get allocated upon
 369  * first use and are never deallocated. This way,
 370  * large bitmaps are not allocated unless large numbers of QPs are used.
 371  */
 372 struct qpn_map {
 373         void *page;
 374 };
 375
 376 struct qib_qpn_table {
 377         spinlock_t lock; /* protect changes in this struct */
 378         unsigned flags;         /* flags for QP0/1 allocated for each port */
 379         u32 last;               /* last QP number allocated */
 380         u32 nmaps;              /* size of the map table */
 381         u16 limit;
 382         u16 mask;
 383         /* bit map of free QP numbers other than 0/1 */
 384         struct qpn_map map[QPNMAP_ENTRIES];
 385 };
 386
 387 struct qib_opcode_stats {
 388         u64 n_packets;          /* number of packets */
 389         u64 n_bytes;            /* total number of bytes */
 390 };
 391
 392 struct qib_opcode_stats_perctx {
 393         struct qib_opcode_stats stats[128];
 394 };
 395
 396 struct qib_pma_counters {
 397         u64 n_unicast_xmit;     /* total unicast packets sent */
 398         u64 n_unicast_rcv;      /* total unicast packets received */
 399         u64 n_multicast_xmit;   /* total multicast packets sent */
 400         u64 n_multicast_rcv;    /* total multicast packets received */
 401 };
 402
 403 struct qib_ibport {
 404         struct rvt_ibport rvp;
 405         struct rvt_ah *sm_ah;
 406         struct rvt_ah *smi_ah;
 407         __be64 guids[QIB_GUIDS_PER_PORT - 1];   /* writable GUIDs */
 408         struct qib_pma_counters __percpu *pmastats;
 409         u64 z_unicast_xmit;     /* starting count for PMA */
 410         u64 z_unicast_rcv;      /* starting count for PMA */
 411         u64 z_multicast_xmit;   /* starting count for PMA */
 412         u64 z_multicast_rcv;    /* starting count for PMA */
 413         u64 z_symbol_error_counter;             /* starting count for PMA */
 414         u64 z_link_error_recovery_counter;      /* starting count for PMA */
 415         u64 z_link_downed_counter;              /* starting count for PMA */
 416         u64 z_port_rcv_errors;                  /* starting count for PMA */
 417         u64 z_port_rcv_remphys_errors;          /* starting count for PMA */
 418         u64 z_port_xmit_discards;               /* starting count for PMA */
 419         u64 z_port_xmit_data;                   /* starting count for PMA */
 420         u64 z_port_rcv_data;                    /* starting count for PMA */
 421         u64 z_port_xmit_packets;                /* starting count for PMA */
 422         u64 z_port_rcv_packets;                 /* starting count for PMA */
 423         u32 z_local_link_integrity_errors;      /* starting count for PMA */
 424         u32 z_excessive_buffer_overrun_errors;  /* starting count for PMA */
 425         u32 z_vl15_dropped;                     /* starting count for PMA */
 426         u8 sl_to_vl[16];
 427 };
 428
 429 struct qib_ibdev {
 430         struct rvt_dev_info rdi;
 431         struct list_head pending_mmaps;
 432         spinlock_t mmap_offset_lock; /* protect mmap_offset */
 433         u32 mmap_offset;
 434
 435         /* QP numbers are shared by all IB ports */
 436         struct qib_qpn_table qpn_table;
 437         struct list_head piowait;       /* list for wait PIO buf */
 438         struct list_head dmawait;       /* list for wait DMA */
 439         struct list_head txwait;        /* list for wait qib_verbs_txreq */
 440         struct list_head memwait;       /* list for wait kernel memory */
 441         struct list_head txreq_free;
 442         struct timer_list mem_timer;
 443         struct rvt_qp __rcu **qp_table;
 444         struct qib_pio_header *pio_hdrs;
 445         dma_addr_t pio_hdrs_phys;
 446         /* list of QPs waiting for RNR timer */
 447         spinlock_t pending_lock; /* protect wait lists, PMA counters, etc. */
 448         u32 qp_table_size; /* size of the hash table */
 449         u32 qp_rnd; /* random bytes for hash */
 450         spinlock_t qpt_lock;
 451
 452         u32 n_piowait;
 453         u32 n_txwait;
 454
 455         u32 n_cqs_allocated;    /* number of CQs allocated for device */
 456         spinlock_t n_cqs_lock;
 457         u32 n_qps_allocated;    /* number of QPs allocated for device */
 458         spinlock_t n_qps_lock;
 459         u32 n_srqs_allocated;   /* number of SRQs allocated for device */
 460         spinlock_t n_srqs_lock;
 461         u32 n_mcast_grps_allocated; /* number of mcast groups allocated */
 462         spinlock_t n_mcast_grps_lock;
 463 #ifdef CONFIG_DEBUG_FS
 464         /* per HCA debugfs */
 465         struct dentry *qib_ibdev_dbg;
 466 #endif
 467 };
 468
 469 struct qib_verbs_counters {
 470         u64 symbol_error_counter;
 471         u64 link_error_recovery_counter;
 472         u64 link_downed_counter;
 473         u64 port_rcv_errors;
 474         u64 port_rcv_remphys_errors;
 475         u64 port_xmit_discards;
 476         u64 port_xmit_data;
 477         u64 port_rcv_data;
 478         u64 port_xmit_packets;
 479         u64 port_rcv_packets;
 480         u32 local_link_integrity_errors;
 481         u32 excessive_buffer_overrun_errors;
 482         u32 vl15_dropped;
 483 };
 484
 485 static inline struct qib_cq *to_icq(struct ib_cq *ibcq)
 486 {
 487         return container_of(ibcq, struct qib_cq, ibcq);
 488 }
 489
 490 static inline struct rvt_qp *to_iqp(struct ib_qp *ibqp)
 491 {
 492         return container_of(ibqp, struct rvt_qp, ibqp);
 493 }
 494
 495 static inline struct qib_ibdev *to_idev(struct ib_device *ibdev)
 496 {
 497         struct rvt_dev_info *rdi;
 498
 499         rdi = container_of(ibdev, struct rvt_dev_info, ibdev);
 500         return container_of(rdi, struct qib_ibdev, rdi);
 501 }
 502
 503 /*
 504  * Send if not busy or waiting for I/O and either
 505  * a RC response is pending or we can process send work requests.
 506  */
 507 static inline int qib_send_ok(struct rvt_qp *qp)
 508 {
 509         return !(qp->s_flags & (QIB_S_BUSY | QIB_S_ANY_WAIT_IO)) &&
 510                 (qp->s_hdrwords || (qp->s_flags & QIB_S_RESP_PENDING) ||
 511                  !(qp->s_flags & QIB_S_ANY_WAIT_SEND));
 512 }
 513
 514 /*
 515  * This must be called with s_lock held.
 516  */
 517 void qib_schedule_send(struct rvt_qp *qp);
 518
 519 static inline int qib_pkey_ok(u16 pkey1, u16 pkey2)
 520 {
 521         u16 p1 = pkey1 & 0x7FFF;
 522         u16 p2 = pkey2 & 0x7FFF;
 523
 524         /*
 525          * Low 15 bits must be non-zero and match, and
 526          * one of the two must be a full member.
 527          */
 528         return p1 && p1 == p2 && ((__s16)pkey1 < 0 || (__s16)pkey2 < 0);
 529 }
 530
 531 void qib_bad_pqkey(struct qib_ibport *ibp, __be16 trap_num, u32 key, u32 sl,
 532                    u32 qp1, u32 qp2, __be16 lid1, __be16 lid2);
 533 void qib_cap_mask_chg(struct qib_ibport *ibp);
 534 void qib_sys_guid_chg(struct qib_ibport *ibp);
 535 void qib_node_desc_chg(struct qib_ibport *ibp);
 536 int qib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
 537                     const struct ib_wc *in_wc, const struct ib_grh *in_grh,
 538                     const struct ib_mad_hdr *in, size_t in_mad_size,
 539                     struct ib_mad_hdr *out, size_t *out_mad_size,
 540                     u16 *out_mad_pkey_index);
 541 int qib_create_agents(struct qib_ibdev *dev);
 542 void qib_free_agents(struct qib_ibdev *dev);
 543
 544 /*
 545  * Compare the lower 24 bits of the two values.
 546  * Returns an integer <, ==, or > than zero.
 547  */
 548 static inline int qib_cmp24(u32 a, u32 b)
 549 {
 550         return (((int) a) - ((int) b)) << 8;
 551 }
 552
 553 struct qib_mcast *qib_mcast_find(struct qib_ibport *ibp, union ib_gid *mgid);
 554
 555 int qib_snapshot_counters(struct qib_pportdata *ppd, u64 *swords,
 556                           u64 *rwords, u64 *spkts, u64 *rpkts,
 557                           u64 *xmit_wait);
 558
 559 int qib_get_counters(struct qib_pportdata *ppd,
 560                      struct qib_verbs_counters *cntrs);
 561
 562 int qib_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid);
 563
 564 int qib_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid);
 565
 566 int qib_mcast_tree_empty(struct qib_ibport *ibp);
 567
 568 __be32 qib_compute_aeth(struct rvt_qp *qp);
 569
 570 struct rvt_qp *qib_lookup_qpn(struct qib_ibport *ibp, u32 qpn);
 571
 572 struct ib_qp *qib_create_qp(struct ib_pd *ibpd,
 573                             struct ib_qp_init_attr *init_attr,
 574                             struct ib_udata *udata);
 575
 576 int qib_destroy_qp(struct ib_qp *ibqp);
 577
 578 int qib_error_qp(struct rvt_qp *qp, enum ib_wc_status err);
 579
 580 int qib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
 581                   int attr_mask, struct ib_udata *udata);
 582
 583 int qib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
 584                  int attr_mask, struct ib_qp_init_attr *init_attr);
 585
 586 unsigned qib_free_all_qps(struct qib_devdata *dd);
 587
 588 void qib_init_qpn_table(struct qib_devdata *dd, struct qib_qpn_table *qpt);
 589
 590 void qib_free_qpn_table(struct qib_qpn_table *qpt);
 591
 592 #ifdef CONFIG_DEBUG_FS
 593
 594 struct qib_qp_iter;
 595
 596 struct qib_qp_iter *qib_qp_iter_init(struct qib_ibdev *dev);
 597
 598 int qib_qp_iter_next(struct qib_qp_iter *iter);
 599
 600 void qib_qp_iter_print(struct seq_file *s, struct qib_qp_iter *iter);
 601
 602 #endif
 603
 604 void qib_get_credit(struct rvt_qp *qp, u32 aeth);
 605
 606 unsigned qib_pkt_delay(u32 plen, u8 snd_mult, u8 rcv_mult);
 607
 608 void qib_verbs_sdma_desc_avail(struct qib_pportdata *ppd, unsigned avail);
 609
 610 void qib_put_txreq(struct qib_verbs_txreq *tx);
 611
 612 int qib_verbs_send(struct rvt_qp *qp, struct qib_ib_header *hdr,
 613                    u32 hdrwords, struct rvt_sge_state *ss, u32 len);
 614
 615 void qib_copy_sge(struct rvt_sge_state *ss, void *data, u32 length,
 616                   int release);
 617
 618 void qib_skip_sge(struct rvt_sge_state *ss, u32 length, int release);
 619
 620 void qib_uc_rcv(struct qib_ibport *ibp, struct qib_ib_header *hdr,
 621                 int has_grh, void *data, u32 tlen, struct rvt_qp *qp);
 622
 623 void qib_rc_rcv(struct qib_ctxtdata *rcd, struct qib_ib_header *hdr,
 624                 int has_grh, void *data, u32 tlen, struct rvt_qp *qp);
 625
 626 int qib_check_ah(struct ib_device *ibdev, struct ib_ah_attr *ah_attr);
 627
 628 struct ib_ah *qib_create_qp0_ah(struct qib_ibport *ibp, u16 dlid);
 629
 630 void qib_rc_rnr_retry(unsigned long arg);
 631
 632 void qib_rc_send_complete(struct rvt_qp *qp, struct qib_ib_header *hdr);
 633
 634 void qib_rc_error(struct rvt_qp *qp, enum ib_wc_status err);
 635
 636 int qib_post_ud_send(struct rvt_qp *qp, struct ib_send_wr *wr);
 637
 638 void qib_ud_rcv(struct qib_ibport *ibp, struct qib_ib_header *hdr,
 639                 int has_grh, void *data, u32 tlen, struct rvt_qp *qp);
 640
 641 int qib_post_srq_receive(struct ib_srq *ibsrq, struct ib_recv_wr *wr,
 642                          struct ib_recv_wr **bad_wr);
 643
 644 struct ib_srq *qib_create_srq(struct ib_pd *ibpd,
 645                               struct ib_srq_init_attr *srq_init_attr,
 646                               struct ib_udata *udata);
 647
 648 int qib_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
 649                    enum ib_srq_attr_mask attr_mask,
 650                    struct ib_udata *udata);
 651
 652 int qib_query_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr);
 653
 654 int qib_destroy_srq(struct ib_srq *ibsrq);
 655
 656 int qib_cq_init(struct qib_devdata *dd);
 657
 658 void qib_cq_exit(struct qib_devdata *dd);
 659
 660 void qib_cq_enter(struct qib_cq *cq, struct ib_wc *entry, int sig);
 661
 662 int qib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry);
 663
 664 struct ib_cq *qib_create_cq(struct ib_device *ibdev,
 665                             const struct ib_cq_init_attr *attr,
 666                             struct ib_ucontext *context,
 667                             struct ib_udata *udata);
 668
 669 int qib_destroy_cq(struct ib_cq *ibcq);
 670
 671 int qib_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags notify_flags);
 672
 673 int qib_resize_cq(struct ib_cq *ibcq, int cqe, struct ib_udata *udata);
 674
 675 void mr_rcu_callback(struct rcu_head *list);
 676
 677 static inline void qib_put_ss(struct rvt_sge_state *ss)
 678 {
 679         while (ss->num_sge) {
 680                 rvt_put_mr(ss->sge.mr);
 681                 if (--ss->num_sge)
 682                         ss->sge = *ss->sg_list++;
 683         }
 684 }
 685
 686 void qib_release_mmap_info(struct kref *ref);
 687
 688 struct rvt_mmap_info *qib_create_mmap_info(struct qib_ibdev *dev, u32 size,
 689                                            struct ib_ucontext *context,
 690                                            void *obj);
 691
 692 void qib_update_mmap_info(struct qib_ibdev *dev, struct rvt_mmap_info *ip,
 693                           u32 size, void *obj);
 694
 695 int qib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma);
 696
 697 int qib_get_rwqe(struct rvt_qp *qp, int wr_id_only);
 698
 699 void qib_migrate_qp(struct rvt_qp *qp);
 700
 701 int qib_ruc_check_hdr(struct qib_ibport *ibp, struct qib_ib_header *hdr,
 702                       int has_grh, struct rvt_qp *qp, u32 bth0);
 703
 704 u32 qib_make_grh(struct qib_ibport *ibp, struct ib_grh *hdr,
 705                  struct ib_global_route *grh, u32 hwords, u32 nwords);
 706
 707 void qib_make_ruc_header(struct rvt_qp *qp, struct qib_other_headers *ohdr,
 708                          u32 bth0, u32 bth2);
 709
 710 void qib_do_send(struct work_struct *work);
 711
 712 void qib_send_complete(struct rvt_qp *qp, struct rvt_swqe *wqe,
 713                        enum ib_wc_status status);
 714
 715 void qib_send_rc_ack(struct rvt_qp *qp);
 716
 717 int qib_make_rc_req(struct rvt_qp *qp);
 718
 719 int qib_make_uc_req(struct rvt_qp *qp);
 720
 721 int qib_make_ud_req(struct rvt_qp *qp);
 722
 723 int qib_register_ib_device(struct qib_devdata *);
 724
 725 void qib_unregister_ib_device(struct qib_devdata *);
 726
 727 void qib_ib_rcv(struct qib_ctxtdata *, void *, void *, u32);
 728
 729 void qib_ib_piobufavail(struct qib_devdata *);
 730
 731 unsigned qib_get_npkeys(struct qib_devdata *);
 732
 733 unsigned qib_get_pkey(struct qib_ibport *, unsigned);
 734
 735 extern const enum ib_wc_opcode ib_qib_wc_opcode[];
 736
 737 /*
 738  * Below  HCA-independent IB PhysPortState values, returned
 739  * by the f_ibphys_portstate() routine.
 740  */
 741 #define IB_PHYSPORTSTATE_SLEEP 1
 742 #define IB_PHYSPORTSTATE_POLL 2
 743 #define IB_PHYSPORTSTATE_DISABLED 3
 744 #define IB_PHYSPORTSTATE_CFG_TRAIN 4
 745 #define IB_PHYSPORTSTATE_LINKUP 5
 746 #define IB_PHYSPORTSTATE_LINK_ERR_RECOVER 6
 747 #define IB_PHYSPORTSTATE_CFG_DEBOUNCE 8
 748 #define IB_PHYSPORTSTATE_CFG_IDLE 0xB
 749 #define IB_PHYSPORTSTATE_RECOVERY_RETRAIN 0xC
 750 #define IB_PHYSPORTSTATE_RECOVERY_WAITRMT 0xE
 751 #define IB_PHYSPORTSTATE_RECOVERY_IDLE 0xF
 752 #define IB_PHYSPORTSTATE_CFG_ENH 0x10
 753 #define IB_PHYSPORTSTATE_CFG_WAIT_ENH 0x13
 754
 755 extern const int ib_qib_state_ops[];
 756
 757 extern __be64 ib_qib_sys_image_guid;    /* in network order */
 758
 759 extern unsigned int ib_rvt_lkey_table_size;
 760
 761 extern unsigned int ib_qib_max_cqes;
 762
 763 extern unsigned int ib_qib_max_cqs;
 764
 765 extern unsigned int ib_qib_max_qp_wrs;
 766
 767 extern unsigned int ib_qib_max_qps;
 768
 769 extern unsigned int ib_qib_max_sges;
 770
 771 extern unsigned int ib_qib_max_mcast_grps;
 772
 773 extern unsigned int ib_qib_max_mcast_qp_attached;
 774
 775 extern unsigned int ib_qib_max_srqs;
 776
 777 extern unsigned int ib_qib_max_srq_sges;
 778
 779 extern unsigned int ib_qib_max_srq_wrs;
 780
 781 extern const u32 ib_qib_rnr_table[];
 782
 783 #endif                          /* QIB_VERBS_H */