drivers/infiniband/hw/ipath/ipath_verbs.h

   1 /*
   2  * Copyright (c) 2006, 2007 QLogic Corporation. All rights reserved.
   3  * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved.
   4  *
   5  * This software is available to you under a choice of one of two
   6  * licenses.  You may choose to be licensed under the terms of the GNU
   7  * General Public License (GPL) Version 2, available from the file
   8  * COPYING in the main directory of this source tree, or the
   9  * OpenIB.org BSD license below:
  10  *
  11  *     Redistribution and use in source and binary forms, with or
  12  *     without modification, are permitted provided that the following
  13  *     conditions are met:
  14  *
  15  *      - Redistributions of source code must retain the above
  16  *        copyright notice, this list of conditions and the following
  17  *        disclaimer.
  18  *
  19  *      - Redistributions in binary form must reproduce the above
  20  *        copyright notice, this list of conditions and the following
  21  *        disclaimer in the documentation and/or other materials
  22  *        provided with the distribution.
  23  *
  24  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  28  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  29  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  30  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  31  * SOFTWARE.
  32  */
  33
  34 #ifndef IPATH_VERBS_H
  35 #define IPATH_VERBS_H
  36
  37 #include <linux/types.h>
  38 #include <linux/spinlock.h>
  39 #include <linux/kernel.h>
  40 #include <linux/interrupt.h>
  41 #include <linux/kref.h>
  42 #include <rdma/ib_pack.h>
  43 #include <rdma/ib_user_verbs.h>
  44
  45 #include "ipath_layer.h"
  46
  47 #define IPATH_MAX_RDMA_ATOMIC   4
  48
  49 #define QPN_MAX                 (1 << 24)
  50 #define QPNMAP_ENTRIES          (QPN_MAX / PAGE_SIZE / BITS_PER_BYTE)
  51
  52 /*
  53  * Increment this value if any changes that break userspace ABI
  54  * compatibility are made.
  55  */
  56 #define IPATH_UVERBS_ABI_VERSION       2
  57
  58 /*
  59  * Define an ib_cq_notify value that is not valid so we know when CQ
  60  * notifications are armed.
  61  */
  62 #define IB_CQ_NONE      (IB_CQ_NEXT_COMP + 1)
  63
  64 #define IB_RNR_NAK                      0x20
  65 #define IB_NAK_PSN_ERROR                0x60
  66 #define IB_NAK_INVALID_REQUEST          0x61
  67 #define IB_NAK_REMOTE_ACCESS_ERROR      0x62
  68 #define IB_NAK_REMOTE_OPERATIONAL_ERROR 0x63
  69 #define IB_NAK_INVALID_RD_REQUEST       0x64
  70
  71 #define IPATH_POST_SEND_OK              0x01
  72 #define IPATH_POST_RECV_OK              0x02
  73 #define IPATH_PROCESS_RECV_OK           0x04
  74 #define IPATH_PROCESS_SEND_OK           0x08
  75
  76 /* IB Performance Manager status values */
  77 #define IB_PMA_SAMPLE_STATUS_DONE       0x00
  78 #define IB_PMA_SAMPLE_STATUS_STARTED    0x01
  79 #define IB_PMA_SAMPLE_STATUS_RUNNING    0x02
  80
  81 /* Mandatory IB performance counter select values. */
  82 #define IB_PMA_PORT_XMIT_DATA   __constant_htons(0x0001)
  83 #define IB_PMA_PORT_RCV_DATA    __constant_htons(0x0002)
  84 #define IB_PMA_PORT_XMIT_PKTS   __constant_htons(0x0003)
  85 #define IB_PMA_PORT_RCV_PKTS    __constant_htons(0x0004)
  86 #define IB_PMA_PORT_XMIT_WAIT   __constant_htons(0x0005)
  87
  88 struct ib_reth {
  89         __be64 vaddr;
  90         __be32 rkey;
  91         __be32 length;
  92 } __attribute__ ((packed));
  93
  94 struct ib_atomic_eth {
  95         __be32 vaddr[2];        /* unaligned so access as 2 32-bit words */
  96         __be32 rkey;
  97         __be64 swap_data;
  98         __be64 compare_data;
  99 } __attribute__ ((packed));
 100
 101 struct ipath_other_headers {
 102         __be32 bth[3];
 103         union {
 104                 struct {
 105                         __be32 deth[2];
 106                         __be32 imm_data;
 107                 } ud;
 108                 struct {
 109                         struct ib_reth reth;
 110                         __be32 imm_data;
 111                 } rc;
 112                 struct {
 113                         __be32 aeth;
 114                         __be32 atomic_ack_eth[2];
 115                 } at;
 116                 __be32 imm_data;
 117                 __be32 aeth;
 118                 struct ib_atomic_eth atomic_eth;
 119         } u;
 120 } __attribute__ ((packed));
 121
 122 /*
 123  * Note that UD packets with a GRH header are 8+40+12+8 = 68 bytes
 124  * long (72 w/ imm_data).  Only the first 56 bytes of the IB header
 125  * will be in the eager header buffer.  The remaining 12 or 16 bytes
 126  * are in the data buffer.
 127  */
 128 struct ipath_ib_header {
 129         __be16 lrh[4];
 130         union {
 131                 struct {
 132                         struct ib_grh grh;
 133                         struct ipath_other_headers oth;
 134                 } l;
 135                 struct ipath_other_headers oth;
 136         } u;
 137 } __attribute__ ((packed));
 138
 139 /*
 140  * There is one struct ipath_mcast for each multicast GID.
 141  * All attached QPs are then stored as a list of
 142  * struct ipath_mcast_qp.
 143  */
 144 struct ipath_mcast_qp {
 145         struct list_head list;
 146         struct ipath_qp *qp;
 147 };
 148
 149 struct ipath_mcast {
 150         struct rb_node rb_node;
 151         union ib_gid mgid;
 152         struct list_head qp_list;
 153         wait_queue_head_t wait;
 154         atomic_t refcount;
 155         int n_attached;
 156 };
 157
 158 /* Protection domain */
 159 struct ipath_pd {
 160         struct ib_pd ibpd;
 161         int user;               /* non-zero if created from user space */
 162 };
 163
 164 /* Address Handle */
 165 struct ipath_ah {
 166         struct ib_ah ibah;
 167         struct ib_ah_attr attr;
 168 };
 169
 170 /*
 171  * This structure is used by ipath_mmap() to validate an offset
 172  * when an mmap() request is made.  The vm_area_struct then uses
 173  * this as its vm_private_data.
 174  */
 175 struct ipath_mmap_info {
 176         struct list_head pending_mmaps;
 177         struct ib_ucontext *context;
 178         void *obj;
 179         __u64 offset;
 180         struct kref ref;
 181         unsigned size;
 182 };
 183
 184 /*
 185  * This structure is used to contain the head pointer, tail pointer,
 186  * and completion queue entries as a single memory allocation so
 187  * it can be mmap'ed into user space.
 188  */
 189 struct ipath_cq_wc {
 190         u32 head;               /* index of next entry to fill */
 191         u32 tail;               /* index of next ib_poll_cq() entry */
 192         struct ib_uverbs_wc queue[1]; /* this is actually size ibcq.cqe + 1 */
 193 };
 194
 195 /*
 196  * The completion queue structure.
 197  */
 198 struct ipath_cq {
 199         struct ib_cq ibcq;
 200         struct tasklet_struct comptask;
 201         spinlock_t lock;
 202         u8 notify;
 203         u8 triggered;
 204         struct ipath_cq_wc *queue;
 205         struct ipath_mmap_info *ip;
 206 };
 207
 208 /*
 209  * A segment is a linear region of low physical memory.
 210  * XXX Maybe we should use phys addr here and kmap()/kunmap().
 211  * Used by the verbs layer.
 212  */
 213 struct ipath_seg {
 214         void *vaddr;
 215         size_t length;
 216 };
 217
 218 /* The number of ipath_segs that fit in a page. */
 219 #define IPATH_SEGSZ     (PAGE_SIZE / sizeof (struct ipath_seg))
 220
 221 struct ipath_segarray {
 222         struct ipath_seg segs[IPATH_SEGSZ];
 223 };
 224
 225 struct ipath_mregion {
 226         struct ib_pd *pd;       /* shares refcnt of ibmr.pd */
 227         u64 user_base;          /* User's address for this region */
 228         u64 iova;               /* IB start address of this region */
 229         size_t length;
 230         u32 lkey;
 231         u32 offset;             /* offset (bytes) to start of region */
 232         int access_flags;
 233         u32 max_segs;           /* number of ipath_segs in all the arrays */
 234         u32 mapsz;              /* size of the map array */
 235         struct ipath_segarray *map[0];  /* the segments */
 236 };
 237
 238 /*
 239  * These keep track of the copy progress within a memory region.
 240  * Used by the verbs layer.
 241  */
 242 struct ipath_sge {
 243         struct ipath_mregion *mr;
 244         void *vaddr;            /* current pointer into the segment */
 245         u32 sge_length;         /* length of the SGE */
 246         u32 length;             /* remaining length of the segment */
 247         u16 m;                  /* current index: mr->map[m] */
 248         u16 n;                  /* current index: mr->map[m]->segs[n] */
 249 };
 250
 251 /* Memory region */
 252 struct ipath_mr {
 253         struct ib_mr ibmr;
 254         struct ib_umem *umem;
 255         struct ipath_mregion mr;        /* must be last */
 256 };
 257
 258 /*
 259  * Send work request queue entry.
 260  * The size of the sg_list is determined when the QP is created and stored
 261  * in qp->s_max_sge.
 262  */
 263 struct ipath_swqe {
 264         struct ib_send_wr wr;   /* don't use wr.sg_list */
 265         u32 psn;                /* first packet sequence number */
 266         u32 lpsn;               /* last packet sequence number */
 267         u32 ssn;                /* send sequence number */
 268         u32 length;             /* total length of data in sg_list */
 269         struct ipath_sge sg_list[0];
 270 };
 271
 272 /*
 273  * Receive work request queue entry.
 274  * The size of the sg_list is determined when the QP (or SRQ) is created
 275  * and stored in qp->r_rq.max_sge (or srq->rq.max_sge).
 276  */
 277 struct ipath_rwqe {
 278         u64 wr_id;
 279         u8 num_sge;
 280         struct ib_sge sg_list[0];
 281 };
 282
 283 /*
 284  * This structure is used to contain the head pointer, tail pointer,
 285  * and receive work queue entries as a single memory allocation so
 286  * it can be mmap'ed into user space.
 287  * Note that the wq array elements are variable size so you can't
 288  * just index into the array to get the N'th element;
 289  * use get_rwqe_ptr() instead.
 290  */
 291 struct ipath_rwq {
 292         u32 head;               /* new work requests posted to the head */
 293         u32 tail;               /* receives pull requests from here. */
 294         struct ipath_rwqe wq[0];
 295 };
 296
 297 struct ipath_rq {
 298         struct ipath_rwq *wq;
 299         spinlock_t lock;
 300         u32 size;               /* size of RWQE array */
 301         u8 max_sge;
 302 };
 303
 304 struct ipath_srq {
 305         struct ib_srq ibsrq;
 306         struct ipath_rq rq;
 307         struct ipath_mmap_info *ip;
 308         /* send signal when number of RWQEs < limit */
 309         u32 limit;
 310 };
 311
 312 struct ipath_sge_state {
 313         struct ipath_sge *sg_list;      /* next SGE to be used if any */
 314         struct ipath_sge sge;   /* progress state for the current SGE */
 315         u8 num_sge;
 316 };
 317
 318 /*
 319  * This structure holds the information that the send tasklet needs
 320  * to send a RDMA read response or atomic operation.
 321  */
 322 struct ipath_ack_entry {
 323         u8 opcode;
 324         u8 sent;
 325         u32 psn;
 326         union {
 327                 struct ipath_sge_state rdma_sge;
 328                 u64 atomic_data;
 329         };
 330 };
 331
 332 /*
 333  * Variables prefixed with s_ are for the requester (sender).
 334  * Variables prefixed with r_ are for the responder (receiver).
 335  * Variables prefixed with ack_ are for responder replies.
 336  *
 337  * Common variables are protected by both r_rq.lock and s_lock in that order
 338  * which only happens in modify_qp() or changing the QP 'state'.
 339  */
 340 struct ipath_qp {
 341         struct ib_qp ibqp;
 342         struct ipath_qp *next;          /* link list for QPN hash table */
 343         struct ipath_qp *timer_next;    /* link list for ipath_ib_timer() */
 344         struct list_head piowait;       /* link for wait PIO buf */
 345         struct list_head timerwait;     /* link for waiting for timeouts */
 346         struct ib_ah_attr remote_ah_attr;
 347         struct ipath_ib_header s_hdr;   /* next packet header to send */
 348         atomic_t refcount;
 349         wait_queue_head_t wait;
 350         struct tasklet_struct s_task;
 351         struct ipath_mmap_info *ip;
 352         struct ipath_sge_state *s_cur_sge;
 353         struct ipath_sge_state s_sge;   /* current send request data */
 354         struct ipath_ack_entry s_ack_queue[IPATH_MAX_RDMA_ATOMIC + 1];
 355         struct ipath_sge_state s_ack_rdma_sge;
 356         struct ipath_sge_state s_rdma_read_sge;
 357         struct ipath_sge_state r_sge;   /* current receive data */
 358         spinlock_t s_lock;
 359         unsigned long s_busy;
 360         u32 s_hdrwords;         /* size of s_hdr in 32 bit words */
 361         u32 s_cur_size;         /* size of send packet in bytes */
 362         u32 s_len;              /* total length of s_sge */
 363         u32 s_rdma_read_len;    /* total length of s_rdma_read_sge */
 364         u32 s_next_psn;         /* PSN for next request */
 365         u32 s_last_psn;         /* last response PSN processed */
 366         u32 s_psn;              /* current packet sequence number */
 367         u32 s_ack_rdma_psn;     /* PSN for sending RDMA read responses */
 368         u32 s_ack_psn;          /* PSN for acking sends and RDMA writes */
 369         u32 s_rnr_timeout;      /* number of milliseconds for RNR timeout */
 370         u32 r_ack_psn;          /* PSN for next ACK or atomic ACK */
 371         u64 r_wr_id;            /* ID for current receive WQE */
 372         u32 r_len;              /* total length of r_sge */
 373         u32 r_rcv_len;          /* receive data len processed */
 374         u32 r_psn;              /* expected rcv packet sequence number */
 375         u32 r_msn;              /* message sequence number */
 376         u8 state;               /* QP state */
 377         u8 s_state;             /* opcode of last packet sent */
 378         u8 s_ack_state;         /* opcode of packet to ACK */
 379         u8 s_nak_state;         /* non-zero if NAK is pending */
 380         u8 r_state;             /* opcode of last packet received */
 381         u8 r_nak_state;         /* non-zero if NAK is pending */
 382         u8 r_min_rnr_timer;     /* retry timeout value for RNR NAKs */
 383         u8 r_reuse_sge;         /* for UC receive errors */
 384         u8 r_sge_inx;           /* current index into sg_list */
 385         u8 r_wrid_valid;        /* r_wrid set but CQ entry not yet made */
 386         u8 r_max_rd_atomic;     /* max number of RDMA read/atomic to receive */
 387         u8 r_head_ack_queue;    /* index into s_ack_queue[] */
 388         u8 qp_access_flags;
 389         u8 s_max_sge;           /* size of s_wq->sg_list */
 390         u8 s_retry_cnt;         /* number of times to retry */
 391         u8 s_rnr_retry_cnt;
 392         u8 s_retry;             /* requester retry counter */
 393         u8 s_rnr_retry;         /* requester RNR retry counter */
 394         u8 s_wait_credit;       /* limit number of unacked packets sent */
 395         u8 s_pkey_index;        /* PKEY index to use */
 396         u8 s_max_rd_atomic;     /* max number of RDMA read/atomic to send */
 397         u8 s_num_rd_atomic;     /* number of RDMA read/atomic pending */
 398         u8 s_tail_ack_queue;    /* index into s_ack_queue[] */
 399         u8 s_flags;
 400         u8 timeout;             /* Timeout for this QP */
 401         enum ib_mtu path_mtu;
 402         u32 remote_qpn;
 403         u32 qkey;               /* QKEY for this QP (for UD or RD) */
 404         u32 s_size;             /* send work queue size */
 405         u32 s_head;             /* new entries added here */
 406         u32 s_tail;             /* next entry to process */
 407         u32 s_cur;              /* current work queue entry */
 408         u32 s_last;             /* last un-ACK'ed entry */
 409         u32 s_ssn;              /* SSN of tail entry */
 410         u32 s_lsn;              /* limit sequence number (credit) */
 411         struct ipath_swqe *s_wq;        /* send work queue */
 412         struct ipath_rq r_rq;           /* receive work queue */
 413         struct ipath_sge r_sg_list[0];  /* verified SGEs */
 414 };
 415
 416 /* Bit definition for s_busy. */
 417 #define IPATH_S_BUSY            0
 418
 419 /*
 420  * Bit definitions for s_flags.
 421  */
 422 #define IPATH_S_SIGNAL_REQ_WR   0x01
 423 #define IPATH_S_FENCE_PENDING   0x02
 424 #define IPATH_S_RDMAR_PENDING   0x04
 425 #define IPATH_S_ACK_PENDING     0x08
 426
 427 #define IPATH_PSN_CREDIT        512
 428
 429 /*
 430  * Since struct ipath_swqe is not a fixed size, we can't simply index into
 431  * struct ipath_qp.s_wq.  This function does the array index computation.
 432  */
 433 static inline struct ipath_swqe *get_swqe_ptr(struct ipath_qp *qp,
 434                                               unsigned n)
 435 {
 436         return (struct ipath_swqe *)((char *)qp->s_wq +
 437                                      (sizeof(struct ipath_swqe) +
 438                                       qp->s_max_sge *
 439                                       sizeof(struct ipath_sge)) * n);
 440 }
 441
 442 /*
 443  * Since struct ipath_rwqe is not a fixed size, we can't simply index into
 444  * struct ipath_rwq.wq.  This function does the array index computation.
 445  */
 446 static inline struct ipath_rwqe *get_rwqe_ptr(struct ipath_rq *rq,
 447                                               unsigned n)
 448 {
 449         return (struct ipath_rwqe *)
 450                 ((char *) rq->wq->wq +
 451                  (sizeof(struct ipath_rwqe) +
 452                   rq->max_sge * sizeof(struct ib_sge)) * n);
 453 }
 454
 455 /*
 456  * QPN-map pages start out as NULL, they get allocated upon
 457  * first use and are never deallocated. This way,
 458  * large bitmaps are not allocated unless large numbers of QPs are used.
 459  */
 460 struct qpn_map {
 461         atomic_t n_free;
 462         void *page;
 463 };
 464
 465 struct ipath_qp_table {
 466         spinlock_t lock;
 467         u32 last;               /* last QP number allocated */
 468         u32 max;                /* size of the hash table */
 469         u32 nmaps;              /* size of the map table */
 470         struct ipath_qp **table;
 471         /* bit map of free numbers */
 472         struct qpn_map map[QPNMAP_ENTRIES];
 473 };
 474
 475 struct ipath_lkey_table {
 476         spinlock_t lock;
 477         u32 next;               /* next unused index (speeds search) */
 478         u32 gen;                /* generation count */
 479         u32 max;                /* size of the table */
 480         struct ipath_mregion **table;
 481 };
 482
 483 struct ipath_opcode_stats {
 484         u64 n_packets;          /* number of packets */
 485         u64 n_bytes;            /* total number of bytes */
 486 };
 487
 488 struct ipath_ibdev {
 489         struct ib_device ibdev;
 490         struct ipath_devdata *dd;
 491         struct list_head pending_mmaps;
 492         spinlock_t mmap_offset_lock;
 493         u32 mmap_offset;
 494         int ib_unit;            /* This is the device number */
 495         u16 sm_lid;             /* in host order */
 496         u8 sm_sl;
 497         u8 mkeyprot_resv_lmc;
 498         /* non-zero when timer is set */
 499         unsigned long mkey_lease_timeout;
 500
 501         /* The following fields are really per port. */
 502         struct ipath_qp_table qp_table;
 503         struct ipath_lkey_table lk_table;
 504         struct list_head pending[3];    /* FIFO of QPs waiting for ACKs */
 505         struct list_head piowait;       /* list for wait PIO buf */
 506         /* list of QPs waiting for RNR timer */
 507         struct list_head rnrwait;
 508         spinlock_t pending_lock;
 509         __be64 sys_image_guid;  /* in network order */
 510         __be64 gid_prefix;      /* in network order */
 511         __be64 mkey;
 512
 513         u32 n_pds_allocated;    /* number of PDs allocated for device */
 514         spinlock_t n_pds_lock;
 515         u32 n_ahs_allocated;    /* number of AHs allocated for device */
 516         spinlock_t n_ahs_lock;
 517         u32 n_cqs_allocated;    /* number of CQs allocated for device */
 518         spinlock_t n_cqs_lock;
 519         u32 n_qps_allocated;    /* number of QPs allocated for device */
 520         spinlock_t n_qps_lock;
 521         u32 n_srqs_allocated;   /* number of SRQs allocated for device */
 522         spinlock_t n_srqs_lock;
 523         u32 n_mcast_grps_allocated; /* number of mcast groups allocated */
 524         spinlock_t n_mcast_grps_lock;
 525
 526         u64 ipath_sword;        /* total dwords sent (sample result) */
 527         u64 ipath_rword;        /* total dwords received (sample result) */
 528         u64 ipath_spkts;        /* total packets sent (sample result) */
 529         u64 ipath_rpkts;        /* total packets received (sample result) */
 530         /* # of ticks no data sent (sample result) */
 531         u64 ipath_xmit_wait;
 532         u64 rcv_errors;         /* # of packets with SW detected rcv errs */
 533         u64 n_unicast_xmit;     /* total unicast packets sent */
 534         u64 n_unicast_rcv;      /* total unicast packets received */
 535         u64 n_multicast_xmit;   /* total multicast packets sent */
 536         u64 n_multicast_rcv;    /* total multicast packets received */
 537         u64 z_symbol_error_counter;             /* starting count for PMA */
 538         u64 z_link_error_recovery_counter;      /* starting count for PMA */
 539         u64 z_link_downed_counter;              /* starting count for PMA */
 540         u64 z_port_rcv_errors;                  /* starting count for PMA */
 541         u64 z_port_rcv_remphys_errors;          /* starting count for PMA */
 542         u64 z_port_xmit_discards;               /* starting count for PMA */
 543         u64 z_port_xmit_data;                   /* starting count for PMA */
 544         u64 z_port_rcv_data;                    /* starting count for PMA */
 545         u64 z_port_xmit_packets;                /* starting count for PMA */
 546         u64 z_port_rcv_packets;                 /* starting count for PMA */
 547         u32 z_pkey_violations;                  /* starting count for PMA */
 548         u32 z_local_link_integrity_errors;      /* starting count for PMA */
 549         u32 z_excessive_buffer_overrun_errors;  /* starting count for PMA */
 550         u32 n_rc_resends;
 551         u32 n_rc_acks;
 552         u32 n_rc_qacks;
 553         u32 n_seq_naks;
 554         u32 n_rdma_seq;
 555         u32 n_rnr_naks;
 556         u32 n_other_naks;
 557         u32 n_timeouts;
 558         u32 n_rc_stalls;
 559         u32 n_pkt_drops;
 560         u32 n_vl15_dropped;
 561         u32 n_wqe_errs;
 562         u32 n_rdma_dup_busy;
 563         u32 n_piowait;
 564         u32 n_no_piobuf;
 565         u32 port_cap_flags;
 566         u32 pma_sample_start;
 567         u32 pma_sample_interval;
 568         __be16 pma_counter_select[5];
 569         u16 pma_tag;
 570         u16 qkey_violations;
 571         u16 mkey_violations;
 572         u16 mkey_lease_period;
 573         u16 pending_index;      /* which pending queue is active */
 574         u8 pma_sample_status;
 575         u8 subnet_timeout;
 576         u8 link_width_enabled;
 577         u8 vl_high_limit;
 578         struct ipath_opcode_stats opstats[128];
 579 };
 580
 581 struct ipath_verbs_counters {
 582         u64 symbol_error_counter;
 583         u64 link_error_recovery_counter;
 584         u64 link_downed_counter;
 585         u64 port_rcv_errors;
 586         u64 port_rcv_remphys_errors;
 587         u64 port_xmit_discards;
 588         u64 port_xmit_data;
 589         u64 port_rcv_data;
 590         u64 port_xmit_packets;
 591         u64 port_rcv_packets;
 592         u32 local_link_integrity_errors;
 593         u32 excessive_buffer_overrun_errors;
 594 };
 595
 596 static inline struct ipath_mr *to_imr(struct ib_mr *ibmr)
 597 {
 598         return container_of(ibmr, struct ipath_mr, ibmr);
 599 }
 600
 601 static inline struct ipath_pd *to_ipd(struct ib_pd *ibpd)
 602 {
 603         return container_of(ibpd, struct ipath_pd, ibpd);
 604 }
 605
 606 static inline struct ipath_ah *to_iah(struct ib_ah *ibah)
 607 {
 608         return container_of(ibah, struct ipath_ah, ibah);
 609 }
 610
 611 static inline struct ipath_cq *to_icq(struct ib_cq *ibcq)
 612 {
 613         return container_of(ibcq, struct ipath_cq, ibcq);
 614 }
 615
 616 static inline struct ipath_srq *to_isrq(struct ib_srq *ibsrq)
 617 {
 618         return container_of(ibsrq, struct ipath_srq, ibsrq);
 619 }
 620
 621 static inline struct ipath_qp *to_iqp(struct ib_qp *ibqp)
 622 {
 623         return container_of(ibqp, struct ipath_qp, ibqp);
 624 }
 625
 626 static inline struct ipath_ibdev *to_idev(struct ib_device *ibdev)
 627 {
 628         return container_of(ibdev, struct ipath_ibdev, ibdev);
 629 }
 630
 631 int ipath_process_mad(struct ib_device *ibdev,
 632                       int mad_flags,
 633                       u8 port_num,
 634                       struct ib_wc *in_wc,
 635                       struct ib_grh *in_grh,
 636                       struct ib_mad *in_mad, struct ib_mad *out_mad);
 637
 638 /*
 639  * Compare the lower 24 bits of the two values.
 640  * Returns an integer <, ==, or > than zero.
 641  */
 642 static inline int ipath_cmp24(u32 a, u32 b)
 643 {
 644         return (((int) a) - ((int) b)) << 8;
 645 }
 646
 647 struct ipath_mcast *ipath_mcast_find(union ib_gid *mgid);
 648
 649 int ipath_snapshot_counters(struct ipath_devdata *dd, u64 *swords,
 650                             u64 *rwords, u64 *spkts, u64 *rpkts,
 651                             u64 *xmit_wait);
 652
 653 int ipath_get_counters(struct ipath_devdata *dd,
 654                        struct ipath_verbs_counters *cntrs);
 655
 656 int ipath_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid);
 657
 658 int ipath_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid);
 659
 660 int ipath_mcast_tree_empty(void);
 661
 662 __be32 ipath_compute_aeth(struct ipath_qp *qp);
 663
 664 struct ipath_qp *ipath_lookup_qpn(struct ipath_qp_table *qpt, u32 qpn);
 665
 666 struct ib_qp *ipath_create_qp(struct ib_pd *ibpd,
 667                               struct ib_qp_init_attr *init_attr,
 668                               struct ib_udata *udata);
 669
 670 int ipath_destroy_qp(struct ib_qp *ibqp);
 671
 672 void ipath_error_qp(struct ipath_qp *qp, enum ib_wc_status err);
 673
 674 int ipath_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
 675                     int attr_mask, struct ib_udata *udata);
 676
 677 int ipath_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
 678                    int attr_mask, struct ib_qp_init_attr *init_attr);
 679
 680 void ipath_free_all_qps(struct ipath_qp_table *qpt);
 681
 682 int ipath_init_qp_table(struct ipath_ibdev *idev, int size);
 683
 684 void ipath_sqerror_qp(struct ipath_qp *qp, struct ib_wc *wc);
 685
 686 void ipath_get_credit(struct ipath_qp *qp, u32 aeth);
 687
 688 int ipath_verbs_send(struct ipath_devdata *dd, u32 hdrwords,
 689                      u32 *hdr, u32 len, struct ipath_sge_state *ss);
 690
 691 void ipath_cq_enter(struct ipath_cq *cq, struct ib_wc *entry, int sig);
 692
 693 void ipath_copy_sge(struct ipath_sge_state *ss, void *data, u32 length);
 694
 695 void ipath_skip_sge(struct ipath_sge_state *ss, u32 length);
 696
 697 int ipath_post_ruc_send(struct ipath_qp *qp, struct ib_send_wr *wr);
 698
 699 void ipath_uc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr,
 700                   int has_grh, void *data, u32 tlen, struct ipath_qp *qp);
 701
 702 void ipath_rc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr,
 703                   int has_grh, void *data, u32 tlen, struct ipath_qp *qp);
 704
 705 void ipath_restart_rc(struct ipath_qp *qp, u32 psn, struct ib_wc *wc);
 706
 707 int ipath_post_ud_send(struct ipath_qp *qp, struct ib_send_wr *wr);
 708
 709 void ipath_ud_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr,
 710                   int has_grh, void *data, u32 tlen, struct ipath_qp *qp);
 711
 712 int ipath_alloc_lkey(struct ipath_lkey_table *rkt,
 713                      struct ipath_mregion *mr);
 714
 715 void ipath_free_lkey(struct ipath_lkey_table *rkt, u32 lkey);
 716
 717 int ipath_lkey_ok(struct ipath_qp *qp, struct ipath_sge *isge,
 718                   struct ib_sge *sge, int acc);
 719
 720 int ipath_rkey_ok(struct ipath_qp *qp, struct ipath_sge_state *ss,
 721                   u32 len, u64 vaddr, u32 rkey, int acc);
 722
 723 int ipath_post_srq_receive(struct ib_srq *ibsrq, struct ib_recv_wr *wr,
 724                            struct ib_recv_wr **bad_wr);
 725
 726 struct ib_srq *ipath_create_srq(struct ib_pd *ibpd,
 727                                 struct ib_srq_init_attr *srq_init_attr,
 728                                 struct ib_udata *udata);
 729
 730 int ipath_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
 731                      enum ib_srq_attr_mask attr_mask,
 732                      struct ib_udata *udata);
 733
 734 int ipath_query_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr);
 735
 736 int ipath_destroy_srq(struct ib_srq *ibsrq);
 737
 738 int ipath_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry);
 739
 740 struct ib_cq *ipath_create_cq(struct ib_device *ibdev, int entries, int comp_vector,
 741                               struct ib_ucontext *context,
 742                               struct ib_udata *udata);
 743
 744 int ipath_destroy_cq(struct ib_cq *ibcq);
 745
 746 int ipath_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags notify_flags);
 747
 748 int ipath_resize_cq(struct ib_cq *ibcq, int cqe, struct ib_udata *udata);
 749
 750 struct ib_mr *ipath_get_dma_mr(struct ib_pd *pd, int acc);
 751
 752 struct ib_mr *ipath_reg_phys_mr(struct ib_pd *pd,
 753                                 struct ib_phys_buf *buffer_list,
 754                                 int num_phys_buf, int acc, u64 *iova_start);
 755
 756 struct ib_mr *ipath_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
 757                                 u64 virt_addr, int mr_access_flags,
 758                                 struct ib_udata *udata);
 759
 760 int ipath_dereg_mr(struct ib_mr *ibmr);
 761
 762 struct ib_fmr *ipath_alloc_fmr(struct ib_pd *pd, int mr_access_flags,
 763                                struct ib_fmr_attr *fmr_attr);
 764
 765 int ipath_map_phys_fmr(struct ib_fmr *ibfmr, u64 * page_list,
 766                        int list_len, u64 iova);
 767
 768 int ipath_unmap_fmr(struct list_head *fmr_list);
 769
 770 int ipath_dealloc_fmr(struct ib_fmr *ibfmr);
 771
 772 void ipath_release_mmap_info(struct kref *ref);
 773
 774 struct ipath_mmap_info *ipath_create_mmap_info(struct ipath_ibdev *dev,
 775                                                u32 size,
 776                                                struct ib_ucontext *context,
 777                                                void *obj);
 778
 779 void ipath_update_mmap_info(struct ipath_ibdev *dev,
 780                             struct ipath_mmap_info *ip,
 781                             u32 size, void *obj);
 782
 783 int ipath_mmap(struct ib_ucontext *context, struct vm_area_struct *vma);
 784
 785 void ipath_insert_rnr_queue(struct ipath_qp *qp);
 786
 787 int ipath_get_rwqe(struct ipath_qp *qp, int wr_id_only);
 788
 789 u32 ipath_make_grh(struct ipath_ibdev *dev, struct ib_grh *hdr,
 790                    struct ib_global_route *grh, u32 hwords, u32 nwords);
 791
 792 void ipath_do_ruc_send(unsigned long data);
 793
 794 int ipath_make_rc_req(struct ipath_qp *qp, struct ipath_other_headers *ohdr,
 795                       u32 pmtu, u32 *bth0p, u32 *bth2p);
 796
 797 int ipath_make_uc_req(struct ipath_qp *qp, struct ipath_other_headers *ohdr,
 798                       u32 pmtu, u32 *bth0p, u32 *bth2p);
 799
 800 int ipath_register_ib_device(struct ipath_devdata *);
 801
 802 void ipath_unregister_ib_device(struct ipath_ibdev *);
 803
 804 void ipath_ib_rcv(struct ipath_ibdev *, void *, void *, u32);
 805
 806 int ipath_ib_piobufavail(struct ipath_ibdev *);
 807
 808 unsigned ipath_get_npkeys(struct ipath_devdata *);
 809
 810 u32 ipath_get_cr_errpkey(struct ipath_devdata *);
 811
 812 unsigned ipath_get_pkey(struct ipath_devdata *, unsigned);
 813
 814 extern const enum ib_wc_opcode ib_ipath_wc_opcode[];
 815
 816 extern const u8 ipath_cvt_physportstate[];
 817
 818 extern const int ib_ipath_state_ops[];
 819
 820 extern unsigned int ib_ipath_lkey_table_size;
 821
 822 extern unsigned int ib_ipath_max_cqes;
 823
 824 extern unsigned int ib_ipath_max_cqs;
 825
 826 extern unsigned int ib_ipath_max_qp_wrs;
 827
 828 extern unsigned int ib_ipath_max_qps;
 829
 830 extern unsigned int ib_ipath_max_sges;
 831
 832 extern unsigned int ib_ipath_max_mcast_grps;
 833
 834 extern unsigned int ib_ipath_max_mcast_qp_attached;
 835
 836 extern unsigned int ib_ipath_max_srqs;
 837
 838 extern unsigned int ib_ipath_max_srq_sges;
 839
 840 extern unsigned int ib_ipath_max_srq_wrs;
 841
 842 extern const u32 ib_ipath_rnr_table[];
 843
 844 extern struct ib_dma_mapping_ops ipath_dma_mapping_ops;
 845
 846 #endif                          /* IPATH_VERBS_H */