drivers/infiniband/hw/bnxt_re/qplib_fp.h

   1 /*
   2  * Broadcom NetXtreme-E RoCE driver.
   3  *
   4  * Copyright (c) 2016 - 2017, Broadcom. All rights reserved.  The term
   5  * Broadcom refers to Broadcom Limited and/or its subsidiaries.
   6  *
   7  * This software is available to you under a choice of one of two
   8  * licenses.  You may choose to be licensed under the terms of the GNU
   9  * General Public License (GPL) Version 2, available from the file
  10  * COPYING in the main directory of this source tree, or the
  11  * BSD license below:
  12  *
  13  * Redistribution and use in source and binary forms, with or without
  14  * modification, are permitted provided that the following conditions
  15  * are met:
  16  *
  17  * 1. Redistributions of source code must retain the above copyright
  18  *    notice, this list of conditions and the following disclaimer.
  19  * 2. Redistributions in binary form must reproduce the above copyright
  20  *    notice, this list of conditions and the following disclaimer in
  21  *    the documentation and/or other materials provided with the
  22  *    distribution.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS''
  25  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  26  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  27  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
  28  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  29  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  30  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
  31  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  32  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
  33  * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
  34  * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  35  *
  36  * Description: Fast Path Operators (header)
  37  */
  38
  39 #ifndef __BNXT_QPLIB_FP_H__
  40 #define __BNXT_QPLIB_FP_H__
  41
  42 #include <rdma/bnxt_re-abi.h>
  43
  44 /* Few helper structures temporarily defined here
  45  * should get rid of these when roce_hsi.h is updated
  46  * in original code base
  47  */
  48 struct sq_ud_ext_hdr {
  49         __le32 dst_qp;
  50         __le32 avid;
  51         __le64 rsvd;
  52 };
  53
  54 struct sq_raw_ext_hdr {
  55         __le32 cfa_meta;
  56         __le32 rsvd0;
  57         __le64 rsvd1;
  58 };
  59
  60 struct sq_rdma_ext_hdr {
  61         __le64 remote_va;
  62         __le32 remote_key;
  63         __le32 rsvd;
  64 };
  65
  66 struct sq_atomic_ext_hdr {
  67         __le64 swap_data;
  68         __le64 cmp_data;
  69 };
  70
  71 struct sq_fr_pmr_ext_hdr {
  72         __le64 pblptr;
  73         __le64 va;
  74 };
  75
  76 struct sq_bind_ext_hdr {
  77         __le64 va;
  78         __le32 length_lo;
  79         __le32 length_hi;
  80 };
  81
  82 struct rq_ext_hdr {
  83         __le64 rsvd1;
  84         __le64 rsvd2;
  85 };
  86
  87 /* Helper structures end */
  88
  89 struct bnxt_qplib_srq {
  90         struct bnxt_qplib_pd            *pd;
  91         struct bnxt_qplib_dpi           *dpi;
  92         struct bnxt_qplib_db_info       dbinfo;
  93         u64                             srq_handle;
  94         u32                             id;
  95         u16                             wqe_size;
  96         u32                             max_wqe;
  97         u32                             max_sge;
  98         u32                             threshold;
  99         bool                            arm_req;
 100         struct bnxt_qplib_cq            *cq;
 101         struct bnxt_qplib_hwq           hwq;
 102         struct bnxt_qplib_swq           *swq;
 103         int                             start_idx;
 104         int                             last_idx;
 105         struct bnxt_qplib_sg_info       sg_info;
 106         u16                             eventq_hw_ring_id;
 107         spinlock_t                      lock; /* protect SRQE link list */
 108         u8                              toggle;
 109 };
 110
 111 struct bnxt_qplib_sge {
 112         u64                             addr;
 113         u32                             lkey;
 114         u32                             size;
 115 };
 116
 117 struct bnxt_qplib_swq {
 118         u64                             wr_id;
 119         int                             next_idx;
 120         u8                              type;
 121         u8                              flags;
 122         u32                             start_psn;
 123         u32                             next_psn;
 124         u32                             slot_idx;
 125         u8                              slots;
 126         struct sq_psn_search            *psn_search;
 127         struct sq_psn_search_ext        *psn_ext;
 128 };
 129
 130 struct bnxt_qplib_swqe {
 131         /* General */
 132 #define BNXT_QPLIB_FENCE_WRID   0x46454E43      /* "FENC" */
 133         u64                             wr_id;
 134         u8                              reqs_type;
 135         u8                              type;
 136 #define BNXT_QPLIB_SWQE_TYPE_SEND                       0
 137 #define BNXT_QPLIB_SWQE_TYPE_SEND_WITH_IMM              1
 138 #define BNXT_QPLIB_SWQE_TYPE_SEND_WITH_INV              2
 139 #define BNXT_QPLIB_SWQE_TYPE_RDMA_WRITE                 4
 140 #define BNXT_QPLIB_SWQE_TYPE_RDMA_WRITE_WITH_IMM        5
 141 #define BNXT_QPLIB_SWQE_TYPE_RDMA_READ                  6
 142 #define BNXT_QPLIB_SWQE_TYPE_ATOMIC_CMP_AND_SWP         8
 143 #define BNXT_QPLIB_SWQE_TYPE_ATOMIC_FETCH_AND_ADD       11
 144 #define BNXT_QPLIB_SWQE_TYPE_LOCAL_INV                  12
 145 #define BNXT_QPLIB_SWQE_TYPE_FAST_REG_MR                13
 146 #define BNXT_QPLIB_SWQE_TYPE_REG_MR                     13
 147 #define BNXT_QPLIB_SWQE_TYPE_BIND_MW                    14
 148 #define BNXT_QPLIB_SWQE_TYPE_RECV                       128
 149 #define BNXT_QPLIB_SWQE_TYPE_RECV_RDMA_IMM              129
 150         u8                              flags;
 151 #define BNXT_QPLIB_SWQE_FLAGS_SIGNAL_COMP               BIT(0)
 152 #define BNXT_QPLIB_SWQE_FLAGS_RD_ATOMIC_FENCE           BIT(1)
 153 #define BNXT_QPLIB_SWQE_FLAGS_UC_FENCE                  BIT(2)
 154 #define BNXT_QPLIB_SWQE_FLAGS_SOLICIT_EVENT             BIT(3)
 155 #define BNXT_QPLIB_SWQE_FLAGS_INLINE                    BIT(4)
 156         struct bnxt_qplib_sge           sg_list[BNXT_VAR_MAX_SGE];
 157         int                             num_sge;
 158         /* Max inline data is 96 bytes */
 159         u32                             inline_len;
 160 #define BNXT_QPLIB_SWQE_MAX_INLINE_LENGTH               96
 161         u8              inline_data[BNXT_QPLIB_SWQE_MAX_INLINE_LENGTH];
 162
 163         union {
 164                 /* Send, with imm, inval key */
 165                 struct {
 166                         union {
 167                                 u32     imm_data;
 168                                 u32     inv_key;
 169                         };
 170                         u32             q_key;
 171                         u32             dst_qp;
 172                         u32             avid;
 173                 } send;
 174
 175                 /* Send Raw Ethernet and QP1 */
 176                 struct {
 177                         u16             lflags;
 178                         u16             cfa_action;
 179                         u32             cfa_meta;
 180                 } rawqp1;
 181
 182                 /* RDMA write, with imm, read */
 183                 struct {
 184                         union {
 185                                 u32     imm_data;
 186                                 u32     inv_key;
 187                         };
 188                         u64             remote_va;
 189                         u32             r_key;
 190                 } rdma;
 191
 192                 /* Atomic cmp/swap, fetch/add */
 193                 struct {
 194                         u64             remote_va;
 195                         u32             r_key;
 196                         u64             swap_data;
 197                         u64             cmp_data;
 198                 } atomic;
 199
 200                 /* Local Invalidate */
 201                 struct {
 202                         u32             inv_l_key;
 203                 } local_inv;
 204
 205                 /* FR-PMR */
 206                 struct {
 207                         u8              access_cntl;
 208                         u8              pg_sz_log;
 209                         bool            zero_based;
 210                         u32             l_key;
 211                         u32             length;
 212                         u8              pbl_pg_sz_log;
 213 #define BNXT_QPLIB_SWQE_PAGE_SIZE_4K                    0
 214 #define BNXT_QPLIB_SWQE_PAGE_SIZE_8K                    1
 215 #define BNXT_QPLIB_SWQE_PAGE_SIZE_64K                   4
 216 #define BNXT_QPLIB_SWQE_PAGE_SIZE_256K                  6
 217 #define BNXT_QPLIB_SWQE_PAGE_SIZE_1M                    8
 218 #define BNXT_QPLIB_SWQE_PAGE_SIZE_2M                    9
 219 #define BNXT_QPLIB_SWQE_PAGE_SIZE_4M                    10
 220 #define BNXT_QPLIB_SWQE_PAGE_SIZE_1G                    18
 221                         u8              levels;
 222 #define PAGE_SHIFT_4K   12
 223                         __le64          *pbl_ptr;
 224                         dma_addr_t      pbl_dma_ptr;
 225                         u64             *page_list;
 226                         u16             page_list_len;
 227                         u64             va;
 228                 } frmr;
 229
 230                 /* Bind */
 231                 struct {
 232                         u8              access_cntl;
 233 #define BNXT_QPLIB_BIND_SWQE_ACCESS_LOCAL_WRITE         BIT(0)
 234 #define BNXT_QPLIB_BIND_SWQE_ACCESS_REMOTE_READ         BIT(1)
 235 #define BNXT_QPLIB_BIND_SWQE_ACCESS_REMOTE_WRITE        BIT(2)
 236 #define BNXT_QPLIB_BIND_SWQE_ACCESS_REMOTE_ATOMIC       BIT(3)
 237 #define BNXT_QPLIB_BIND_SWQE_ACCESS_WINDOW_BIND         BIT(4)
 238                         bool            zero_based;
 239                         u8              mw_type;
 240                         u32             parent_l_key;
 241                         u32             r_key;
 242                         u64             va;
 243                         u32             length;
 244                 } bind;
 245         };
 246 };
 247
 248 struct bnxt_qplib_q {
 249         struct bnxt_qplib_hwq           hwq;
 250         struct bnxt_qplib_swq           *swq;
 251         struct bnxt_qplib_db_info       dbinfo;
 252         struct bnxt_qplib_sg_info       sg_info;
 253         u32                             max_wqe;
 254         u32                             max_sw_wqe;
 255         u16                             wqe_size;
 256         u16                             q_full_delta;
 257         u16                             max_sge;
 258         u32                             psn;
 259         bool                            condition;
 260         bool                            single;
 261         bool                            send_phantom;
 262         u32                             phantom_wqe_cnt;
 263         u32                             phantom_cqe_cnt;
 264         u32                             next_cq_cons;
 265         bool                            flushed;
 266         u32                             swq_start;
 267         u32                             swq_last;
 268 };
 269
 270 struct bnxt_qplib_qp {
 271         struct bnxt_qplib_pd            *pd;
 272         struct bnxt_qplib_dpi           *dpi;
 273         struct bnxt_qplib_chip_ctx      *cctx;
 274         u64                             qp_handle;
 275 #define BNXT_QPLIB_QP_ID_INVALID        0xFFFFFFFF
 276         u32                             id;
 277         u8                              type;
 278         u8                              sig_type;
 279         u8                              wqe_mode;
 280         u8                              state;
 281         u8                              cur_qp_state;
 282         u64                             modify_flags;
 283         u32                             max_inline_data;
 284         u32                             mtu;
 285         u8                              path_mtu;
 286         bool                            en_sqd_async_notify;
 287         u16                             pkey_index;
 288         u32                             qkey;
 289         u32                             dest_qp_id;
 290         u8                              access;
 291         u8                              timeout;
 292         u8                              retry_cnt;
 293         u8                              rnr_retry;
 294         u64                             wqe_cnt;
 295         u32                             min_rnr_timer;
 296         u32                             max_rd_atomic;
 297         u32                             max_dest_rd_atomic;
 298         u32                             dest_qpn;
 299         u8                              smac[6];
 300         u16                             vlan_id;
 301         u16                             port_id;
 302         u8                              nw_type;
 303         struct bnxt_qplib_ah            ah;
 304
 305 #define BTH_PSN_MASK                    ((1 << 24) - 1)
 306         /* SQ */
 307         struct bnxt_qplib_q             sq;
 308         /* RQ */
 309         struct bnxt_qplib_q             rq;
 310         /* SRQ */
 311         struct bnxt_qplib_srq           *srq;
 312         /* CQ */
 313         struct bnxt_qplib_cq            *scq;
 314         struct bnxt_qplib_cq            *rcq;
 315         /* IRRQ and ORRQ */
 316         struct bnxt_qplib_hwq           irrq;
 317         struct bnxt_qplib_hwq           orrq;
 318         /* Header buffer for QP1 */
 319         int                             sq_hdr_buf_size;
 320         int                             rq_hdr_buf_size;
 321 /*
 322  * Buffer space for ETH(14), IP or GRH(40), UDP header(8)
 323  * and ib_bth + ib_deth (20).
 324  * Max required is 82 when RoCE V2 is enabled
 325  */
 326 #define BNXT_QPLIB_MAX_QP1_SQ_HDR_SIZE_V2       86
 327         /* Ethernet header      =  14 */
 328         /* ib_grh               =  40 (provided by MAD) */
 329         /* ib_bth + ib_deth     =  20 */
 330         /* MAD                  = 256 (provided by MAD) */
 331         /* iCRC                 =   4 */
 332 #define BNXT_QPLIB_MAX_QP1_RQ_ETH_HDR_SIZE      14
 333 #define BNXT_QPLIB_MAX_QP1_RQ_HDR_SIZE_V2       512
 334 #define BNXT_QPLIB_MAX_GRH_HDR_SIZE_IPV4        20
 335 #define BNXT_QPLIB_MAX_GRH_HDR_SIZE_IPV6        40
 336 #define BNXT_QPLIB_MAX_QP1_RQ_BDETH_HDR_SIZE    20
 337         void                            *sq_hdr_buf;
 338         dma_addr_t                      sq_hdr_buf_map;
 339         void                            *rq_hdr_buf;
 340         dma_addr_t                      rq_hdr_buf_map;
 341         struct list_head                sq_flush;
 342         struct list_head                rq_flush;
 343         u32                             msn;
 344         u32                             msn_tbl_sz;
 345         bool                            is_host_msn_tbl;
 346         u8                              tos_dscp;
 347 };
 348
 349 #define BNXT_QPLIB_MAX_CQE_ENTRY_SIZE   sizeof(struct cq_base)
 350
 351 #define CQE_CNT_PER_PG          (PAGE_SIZE / BNXT_QPLIB_MAX_CQE_ENTRY_SIZE)
 352 #define CQE_MAX_IDX_PER_PG      (CQE_CNT_PER_PG - 1)
 353 #define CQE_PG(x)               (((x) & ~CQE_MAX_IDX_PER_PG) / CQE_CNT_PER_PG)
 354 #define CQE_IDX(x)              ((x) & CQE_MAX_IDX_PER_PG)
 355
 356 #define ROCE_CQE_CMP_V                  0
 357 #define CQE_CMP_VALID(hdr, pass)                        \
 358         (!!((hdr)->cqe_type_toggle & CQ_BASE_TOGGLE) ==         \
 359            !((pass) & BNXT_QPLIB_FLAG_EPOCH_CONS_MASK))
 360
 361 static inline u32 __bnxt_qplib_get_avail(struct bnxt_qplib_hwq *hwq)
 362 {
 363         int cons, prod, avail;
 364
 365         cons = hwq->cons;
 366         prod = hwq->prod;
 367         avail = cons - prod;
 368         if (cons <= prod)
 369                 avail += hwq->depth;
 370         return avail;
 371 }
 372
 373 static inline bool bnxt_qplib_queue_full(struct bnxt_qplib_q *que,
 374                                          u8 slots)
 375 {
 376         struct bnxt_qplib_hwq *hwq;
 377         int avail;
 378
 379         hwq = &que->hwq;
 380         /* False full is possible, retrying post-send makes sense */
 381         avail = hwq->cons - hwq->prod;
 382         if (hwq->cons <= hwq->prod)
 383                 avail += hwq->depth;
 384         return avail <= slots;
 385 }
 386
 387 /* CQ coalescing parameters */
 388 struct bnxt_qplib_cq_coal_param {
 389         u16 buf_maxtime;
 390         u8 normal_maxbuf;
 391         u8 during_maxbuf;
 392         u8 en_ring_idle_mode;
 393 };
 394
 395 #define BNXT_QPLIB_CQ_COAL_DEF_BUF_MAXTIME              0x1
 396 #define BNXT_QPLIB_CQ_COAL_DEF_NORMAL_MAXBUF_P7         0x8
 397 #define BNXT_QPLIB_CQ_COAL_DEF_DURING_MAXBUF_P7         0x8
 398 #define BNXT_QPLIB_CQ_COAL_DEF_NORMAL_MAXBUF_P5         0x1
 399 #define BNXT_QPLIB_CQ_COAL_DEF_DURING_MAXBUF_P5         0x1
 400 #define BNXT_QPLIB_CQ_COAL_DEF_EN_RING_IDLE_MODE        0x1
 401 #define BNXT_QPLIB_CQ_COAL_MAX_BUF_MAXTIME              0x1bf
 402 #define BNXT_QPLIB_CQ_COAL_MAX_NORMAL_MAXBUF            0x1f
 403 #define BNXT_QPLIB_CQ_COAL_MAX_DURING_MAXBUF            0x1f
 404 #define BNXT_QPLIB_CQ_COAL_MAX_EN_RING_IDLE_MODE        0x1
 405
 406 struct bnxt_qplib_cqe {
 407         u8                              status;
 408         u8                              type;
 409         u8                              opcode;
 410         u32                             length;
 411         u16                             cfa_meta;
 412         u64                             wr_id;
 413         union {
 414                 u32                     immdata;
 415                 u32                     invrkey;
 416         };
 417         u64                             qp_handle;
 418         u64                             mr_handle;
 419         u16                             flags;
 420         u8                              smac[6];
 421         u32                             src_qp;
 422         u16                             raweth_qp1_flags;
 423         u16                             raweth_qp1_errors;
 424         u16                             raweth_qp1_cfa_code;
 425         u32                             raweth_qp1_flags2;
 426         u32                             raweth_qp1_metadata;
 427         u8                              raweth_qp1_payload_offset;
 428         u16                             pkey_index;
 429 };
 430
 431 #define BNXT_QPLIB_QUEUE_START_PERIOD           0x01
 432 struct bnxt_qplib_cq {
 433         struct bnxt_qplib_dpi           *dpi;
 434         struct bnxt_qplib_db_info       dbinfo;
 435         u32                             max_wqe;
 436         u32                             id;
 437         u16                             count;
 438         u16                             period;
 439         struct bnxt_qplib_hwq           hwq;
 440         struct bnxt_qplib_hwq           resize_hwq;
 441         u32                             cnq_hw_ring_id;
 442         struct bnxt_qplib_nq            *nq;
 443         bool                            resize_in_progress;
 444         struct bnxt_qplib_sg_info       sg_info;
 445         u64                             cq_handle;
 446         u8                              toggle;
 447
 448 #define CQ_RESIZE_WAIT_TIME_MS          500
 449         unsigned long                   flags;
 450 #define CQ_FLAGS_RESIZE_IN_PROG         1
 451         wait_queue_head_t               waitq;
 452         struct list_head                sqf_head, rqf_head;
 453         atomic_t                        arm_state;
 454         spinlock_t                      compl_lock; /* synch CQ handlers */
 455 /* Locking Notes:
 456  * QP can move to error state from modify_qp, async error event or error
 457  * CQE as part of poll_cq. When QP is moved to error state, it gets added
 458  * to two flush lists, one each for SQ and RQ.
 459  * Each flush list is protected by qplib_cq->flush_lock. Both scq and rcq
 460  * flush_locks should be acquired when QP is moved to error. The control path
 461  * operations(modify_qp and async error events) are synchronized with poll_cq
 462  * using upper level CQ locks (bnxt_re_cq->cq_lock) of both SCQ and RCQ.
 463  * The qplib_cq->flush_lock is required to synchronize two instances of poll_cq
 464  * of the same QP while manipulating the flush list.
 465  */
 466         spinlock_t                      flush_lock; /* QP flush management */
 467         u16                             cnq_events;
 468         struct bnxt_qplib_cq_coal_param *coalescing;
 469 };
 470
 471 #define BNXT_QPLIB_MAX_IRRQE_ENTRY_SIZE sizeof(struct xrrq_irrq)
 472 #define BNXT_QPLIB_MAX_ORRQE_ENTRY_SIZE sizeof(struct xrrq_orrq)
 473 #define IRD_LIMIT_TO_IRRQ_SLOTS(x)      (2 * (x) + 2)
 474 #define IRRQ_SLOTS_TO_IRD_LIMIT(s)      (((s) >> 1) - 1)
 475 #define ORD_LIMIT_TO_ORRQ_SLOTS(x)      ((x) + 1)
 476 #define ORRQ_SLOTS_TO_ORD_LIMIT(s)      ((s) - 1)
 477
 478 #define BNXT_QPLIB_MAX_NQE_ENTRY_SIZE   sizeof(struct nq_base)
 479
 480 #define NQE_CNT_PER_PG          (PAGE_SIZE / BNXT_QPLIB_MAX_NQE_ENTRY_SIZE)
 481 #define NQE_MAX_IDX_PER_PG      (NQE_CNT_PER_PG - 1)
 482 #define NQE_PG(x)               (((x) & ~NQE_MAX_IDX_PER_PG) / NQE_CNT_PER_PG)
 483 #define NQE_IDX(x)              ((x) & NQE_MAX_IDX_PER_PG)
 484
 485 #define NQE_CMP_VALID(hdr, pass)                        \
 486         (!!(le32_to_cpu((hdr)->info63_v[0]) & NQ_BASE_V) ==     \
 487            !((pass) & BNXT_QPLIB_FLAG_EPOCH_CONS_MASK))
 488
 489 #define BNXT_QPLIB_NQE_MAX_CNT          (128 * 1024)
 490
 491 #define NQ_CONS_PCI_BAR_REGION          2
 492 #define NQ_DB_KEY_CP                    (0x2 << CMPL_DOORBELL_KEY_SFT)
 493 #define NQ_DB_IDX_VALID                 CMPL_DOORBELL_IDX_VALID
 494 #define NQ_DB_IRQ_DIS                   CMPL_DOORBELL_MASK
 495 #define NQ_DB_CP_FLAGS_REARM            (NQ_DB_KEY_CP |         \
 496                                          NQ_DB_IDX_VALID)
 497 #define NQ_DB_CP_FLAGS                  (NQ_DB_KEY_CP    |      \
 498                                          NQ_DB_IDX_VALID |      \
 499                                          NQ_DB_IRQ_DIS)
 500
 501 struct bnxt_qplib_nq_db {
 502         struct bnxt_qplib_reg_desc      reg;
 503         struct bnxt_qplib_db_info       dbinfo;
 504 };
 505
 506 typedef int (*cqn_handler_t)(struct bnxt_qplib_nq *nq,
 507                 struct bnxt_qplib_cq *cq);
 508 typedef int (*srqn_handler_t)(struct bnxt_qplib_nq *nq,
 509                 struct bnxt_qplib_srq *srq, u8 event);
 510
 511 struct bnxt_qplib_nq {
 512         struct pci_dev                  *pdev;
 513         struct bnxt_qplib_res           *res;
 514         char                            *name;
 515         struct bnxt_qplib_hwq           hwq;
 516         struct bnxt_qplib_nq_db         nq_db;
 517         u16                             ring_id;
 518         int                             msix_vec;
 519         cpumask_t                       mask;
 520         struct tasklet_struct           nq_tasklet;
 521         bool                            requested;
 522         int                             budget;
 523         u32                             load;
 524
 525         cqn_handler_t                   cqn_handler;
 526         srqn_handler_t                  srqn_handler;
 527         struct workqueue_struct         *cqn_wq;
 528 };
 529
 530 struct bnxt_qplib_nq_work {
 531         struct work_struct      work;
 532         struct bnxt_qplib_nq    *nq;
 533         struct bnxt_qplib_cq    *cq;
 534 };
 535
 536 void bnxt_qplib_nq_stop_irq(struct bnxt_qplib_nq *nq, bool kill);
 537 void bnxt_qplib_disable_nq(struct bnxt_qplib_nq *nq);
 538 int bnxt_qplib_nq_start_irq(struct bnxt_qplib_nq *nq, int nq_indx,
 539                             int msix_vector, bool need_init);
 540 int bnxt_qplib_enable_nq(struct pci_dev *pdev, struct bnxt_qplib_nq *nq,
 541                          int nq_idx, int msix_vector, int bar_reg_offset,
 542                          cqn_handler_t cqn_handler,
 543                          srqn_handler_t srq_handler);
 544 int bnxt_qplib_create_srq(struct bnxt_qplib_res *res,
 545                           struct bnxt_qplib_srq *srq);
 546 int bnxt_qplib_modify_srq(struct bnxt_qplib_res *res,
 547                           struct bnxt_qplib_srq *srq);
 548 int bnxt_qplib_query_srq(struct bnxt_qplib_res *res,
 549                          struct bnxt_qplib_srq *srq);
 550 void bnxt_qplib_destroy_srq(struct bnxt_qplib_res *res,
 551                             struct bnxt_qplib_srq *srq);
 552 int bnxt_qplib_post_srq_recv(struct bnxt_qplib_srq *srq,
 553                              struct bnxt_qplib_swqe *wqe);
 554 int bnxt_qplib_create_qp1(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp);
 555 int bnxt_qplib_create_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp);
 556 int bnxt_qplib_modify_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp);
 557 int bnxt_qplib_query_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp);
 558 int bnxt_qplib_destroy_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp);
 559 void bnxt_qplib_clean_qp(struct bnxt_qplib_qp *qp);
 560 void bnxt_qplib_free_qp_res(struct bnxt_qplib_res *res,
 561                             struct bnxt_qplib_qp *qp);
 562 void *bnxt_qplib_get_qp1_sq_buf(struct bnxt_qplib_qp *qp,
 563                                 struct bnxt_qplib_sge *sge);
 564 void *bnxt_qplib_get_qp1_rq_buf(struct bnxt_qplib_qp *qp,
 565                                 struct bnxt_qplib_sge *sge);
 566 u32 bnxt_qplib_get_rq_prod_index(struct bnxt_qplib_qp *qp);
 567 dma_addr_t bnxt_qplib_get_qp_buf_from_index(struct bnxt_qplib_qp *qp,
 568                                             u32 index);
 569 void bnxt_qplib_post_send_db(struct bnxt_qplib_qp *qp);
 570 int bnxt_qplib_post_send(struct bnxt_qplib_qp *qp,
 571                          struct bnxt_qplib_swqe *wqe);
 572 void bnxt_qplib_post_recv_db(struct bnxt_qplib_qp *qp);
 573 int bnxt_qplib_post_recv(struct bnxt_qplib_qp *qp,
 574                          struct bnxt_qplib_swqe *wqe);
 575 int bnxt_qplib_create_cq(struct bnxt_qplib_res *res, struct bnxt_qplib_cq *cq);
 576 int bnxt_qplib_resize_cq(struct bnxt_qplib_res *res, struct bnxt_qplib_cq *cq,
 577                          int new_cqes);
 578 void bnxt_qplib_resize_cq_complete(struct bnxt_qplib_res *res,
 579                                    struct bnxt_qplib_cq *cq);
 580 int bnxt_qplib_destroy_cq(struct bnxt_qplib_res *res, struct bnxt_qplib_cq *cq);
 581 int bnxt_qplib_poll_cq(struct bnxt_qplib_cq *cq, struct bnxt_qplib_cqe *cqe,
 582                        int num, struct bnxt_qplib_qp **qp);
 583 bool bnxt_qplib_is_cq_empty(struct bnxt_qplib_cq *cq);
 584 void bnxt_qplib_req_notify_cq(struct bnxt_qplib_cq *cq, u32 arm_type);
 585 void bnxt_qplib_free_nq(struct bnxt_qplib_nq *nq);
 586 int bnxt_qplib_alloc_nq(struct bnxt_qplib_res *res, struct bnxt_qplib_nq *nq);
 587 void bnxt_qplib_add_flush_qp(struct bnxt_qplib_qp *qp);
 588 void bnxt_qplib_acquire_cq_locks(struct bnxt_qplib_qp *qp,
 589                                  unsigned long *flags);
 590 void bnxt_qplib_release_cq_locks(struct bnxt_qplib_qp *qp,
 591                                  unsigned long *flags);
 592 int bnxt_qplib_process_flush_list(struct bnxt_qplib_cq *cq,
 593                                   struct bnxt_qplib_cqe *cqe,
 594                                   int num_cqes);
 595 void bnxt_qplib_flush_cqn_wq(struct bnxt_qplib_qp *qp);
 596 void bnxt_re_synchronize_nq(struct bnxt_qplib_nq *nq);
 597
 598 static inline void *bnxt_qplib_get_swqe(struct bnxt_qplib_q *que, u32 *swq_idx)
 599 {
 600         u32 idx;
 601
 602         idx = que->swq_start;
 603         if (swq_idx)
 604                 *swq_idx = idx;
 605         return &que->swq[idx];
 606 }
 607
 608 static inline void bnxt_qplib_swq_mod_start(struct bnxt_qplib_q *que, u32 idx)
 609 {
 610         que->swq_start = que->swq[idx].next_idx;
 611 }
 612
 613 static inline u32 bnxt_qplib_get_depth(struct bnxt_qplib_q *que, u8 wqe_mode, bool is_sq)
 614 {
 615         u32 slots;
 616
 617         /* Queue depth is the number of slots. */
 618         slots = (que->wqe_size * que->max_wqe) / sizeof(struct sq_sge);
 619         /* For variable WQE mode, need to align the slots to 256 */
 620         if (wqe_mode == BNXT_QPLIB_WQE_MODE_VARIABLE && is_sq)
 621                 slots = ALIGN(slots, BNXT_VAR_MAX_SLOT_ALIGN);
 622         return slots;
 623 }
 624
 625 static inline u32 bnxt_qplib_set_sq_size(struct bnxt_qplib_q *que, u8 wqe_mode)
 626 {
 627         return (wqe_mode == BNXT_QPLIB_WQE_MODE_STATIC) ?
 628                 que->max_wqe : bnxt_qplib_get_depth(que, wqe_mode, true);
 629 }
 630
 631 static inline u32 bnxt_qplib_set_sq_max_slot(u8 wqe_mode)
 632 {
 633         return (wqe_mode == BNXT_QPLIB_WQE_MODE_STATIC) ?
 634                 sizeof(struct sq_send) / sizeof(struct sq_sge) : 1;
 635 }
 636
 637 static inline u32 bnxt_qplib_set_rq_max_slot(u32 wqe_size)
 638 {
 639         return (wqe_size / sizeof(struct sq_sge));
 640 }
 641
 642 static inline u16 __xlate_qfd(u16 delta, u16 wqe_bytes)
 643 {
 644         /* For Cu/Wh delta = 128, stride = 16, wqe_bytes = 128
 645          * For Gen-p5 B/C mode delta = 0, stride = 16, wqe_bytes = 128.
 646          * For Gen-p5 delta = 0, stride = 16, 32 <= wqe_bytes <= 512.
 647          * when 8916 is disabled.
 648          */
 649         return (delta * wqe_bytes) / sizeof(struct sq_sge);
 650 }
 651
 652 static inline u16 bnxt_qplib_calc_ilsize(struct bnxt_qplib_swqe *wqe, u16 max)
 653 {
 654         u16 size = 0;
 655         int indx;
 656
 657         for (indx = 0; indx < wqe->num_sge; indx++)
 658                 size += wqe->sg_list[indx].size;
 659         if (size > max)
 660                 size = max;
 661
 662         return size;
 663 }
 664
 665 /* MSN table update inlin */
 666 static inline __le64 bnxt_re_update_msn_tbl(u32 st_idx, u32 npsn, u32 start_psn)
 667 {
 668         return cpu_to_le64((((u64)(st_idx) << SQ_MSN_SEARCH_START_IDX_SFT) &
 669                 SQ_MSN_SEARCH_START_IDX_MASK) |
 670                 (((u64)(npsn) << SQ_MSN_SEARCH_NEXT_PSN_SFT) &
 671                 SQ_MSN_SEARCH_NEXT_PSN_MASK) |
 672                 (((start_psn) << SQ_MSN_SEARCH_START_PSN_SFT) &
 673                 SQ_MSN_SEARCH_START_PSN_MASK));
 674 }
 675
 676 static inline bool __is_var_wqe(struct bnxt_qplib_qp *qp)
 677 {
 678         return (qp->wqe_mode == BNXT_QPLIB_WQE_MODE_VARIABLE);
 679 }
 680
 681 static inline bool __is_err_cqe_for_var_wqe(struct bnxt_qplib_qp *qp, u8 status)
 682 {
 683         return (status != CQ_REQ_STATUS_OK) && __is_var_wqe(qp);
 684 }
 685 #endif /* __BNXT_QPLIB_FP_H__ */