drivers/infiniband/hw/ocrdma/ocrdma_hw.c

   1 /* This file is part of the Emulex RoCE Device Driver for
   2  * RoCE (RDMA over Converged Ethernet) adapters.
   3  * Copyright (C) 2012-2015 Emulex. All rights reserved.
   4  * EMULEX and SLI are trademarks of Emulex.
   5  * www.emulex.com
   6  *
   7  * This software is available to you under a choice of one of two licenses.
   8  * You may choose to be licensed under the terms of the GNU General Public
   9  * License (GPL) Version 2, available from the file COPYING in the main
  10  * directory of this source tree, or the BSD license below:
  11  *
  12  * Redistribution and use in source and binary forms, with or without
  13  * modification, are permitted provided that the following conditions
  14  * are met:
  15  *
  16  * - Redistributions of source code must retain the above copyright notice,
  17  *   this list of conditions and the following disclaimer.
  18  *
  19  * - 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 distribution.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  24  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
  27  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  28  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  29  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
  30  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  31  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  32  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  33  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  34  *
  35  * Contact Information:
  36  * linux-drivers@emulex.com
  37  *
  38  * Emulex
  39  * 3333 Susan Street
  40  * Costa Mesa, CA 92626
  41  */
  42
  43 #include <linux/sched.h>
  44 #include <linux/interrupt.h>
  45 #include <linux/log2.h>
  46 #include <linux/dma-mapping.h>
  47 #include <linux/if_ether.h>
  48
  49 #include <rdma/ib_verbs.h>
  50 #include <rdma/ib_user_verbs.h>
  51 #include <rdma/ib_cache.h>
  52
  53 #include "ocrdma.h"
  54 #include "ocrdma_hw.h"
  55 #include "ocrdma_verbs.h"
  56 #include "ocrdma_ah.h"
  57
  58 enum mbx_status {
  59         OCRDMA_MBX_STATUS_FAILED                = 1,
  60         OCRDMA_MBX_STATUS_ILLEGAL_FIELD         = 3,
  61         OCRDMA_MBX_STATUS_OOR                   = 100,
  62         OCRDMA_MBX_STATUS_INVALID_PD            = 101,
  63         OCRDMA_MBX_STATUS_PD_INUSE              = 102,
  64         OCRDMA_MBX_STATUS_INVALID_CQ            = 103,
  65         OCRDMA_MBX_STATUS_INVALID_QP            = 104,
  66         OCRDMA_MBX_STATUS_INVALID_LKEY          = 105,
  67         OCRDMA_MBX_STATUS_ORD_EXCEEDS           = 106,
  68         OCRDMA_MBX_STATUS_IRD_EXCEEDS           = 107,
  69         OCRDMA_MBX_STATUS_SENDQ_WQE_EXCEEDS     = 108,
  70         OCRDMA_MBX_STATUS_RECVQ_RQE_EXCEEDS     = 109,
  71         OCRDMA_MBX_STATUS_SGE_SEND_EXCEEDS      = 110,
  72         OCRDMA_MBX_STATUS_SGE_WRITE_EXCEEDS     = 111,
  73         OCRDMA_MBX_STATUS_SGE_RECV_EXCEEDS      = 112,
  74         OCRDMA_MBX_STATUS_INVALID_STATE_CHANGE  = 113,
  75         OCRDMA_MBX_STATUS_MW_BOUND              = 114,
  76         OCRDMA_MBX_STATUS_INVALID_VA            = 115,
  77         OCRDMA_MBX_STATUS_INVALID_LENGTH        = 116,
  78         OCRDMA_MBX_STATUS_INVALID_FBO           = 117,
  79         OCRDMA_MBX_STATUS_INVALID_ACC_RIGHTS    = 118,
  80         OCRDMA_MBX_STATUS_INVALID_PBE_SIZE      = 119,
  81         OCRDMA_MBX_STATUS_INVALID_PBL_ENTRY     = 120,
  82         OCRDMA_MBX_STATUS_INVALID_PBL_SHIFT     = 121,
  83         OCRDMA_MBX_STATUS_INVALID_SRQ_ID        = 129,
  84         OCRDMA_MBX_STATUS_SRQ_ERROR             = 133,
  85         OCRDMA_MBX_STATUS_RQE_EXCEEDS           = 134,
  86         OCRDMA_MBX_STATUS_MTU_EXCEEDS           = 135,
  87         OCRDMA_MBX_STATUS_MAX_QP_EXCEEDS        = 136,
  88         OCRDMA_MBX_STATUS_SRQ_LIMIT_EXCEEDS     = 137,
  89         OCRDMA_MBX_STATUS_SRQ_SIZE_UNDERUNS     = 138,
  90         OCRDMA_MBX_STATUS_QP_BOUND              = 130,
  91         OCRDMA_MBX_STATUS_INVALID_CHANGE        = 139,
  92         OCRDMA_MBX_STATUS_ATOMIC_OPS_UNSUP      = 140,
  93         OCRDMA_MBX_STATUS_INVALID_RNR_NAK_TIMER = 141,
  94         OCRDMA_MBX_STATUS_MW_STILL_BOUND        = 142,
  95         OCRDMA_MBX_STATUS_PKEY_INDEX_INVALID    = 143,
  96         OCRDMA_MBX_STATUS_PKEY_INDEX_EXCEEDS    = 144
  97 };
  98
  99 enum additional_status {
 100         OCRDMA_MBX_ADDI_STATUS_INSUFFICIENT_RESOURCES = 22
 101 };
 102
 103 enum cqe_status {
 104         OCRDMA_MBX_CQE_STATUS_INSUFFICIENT_PRIVILEDGES  = 1,
 105         OCRDMA_MBX_CQE_STATUS_INVALID_PARAMETER         = 2,
 106         OCRDMA_MBX_CQE_STATUS_INSUFFICIENT_RESOURCES    = 3,
 107         OCRDMA_MBX_CQE_STATUS_QUEUE_FLUSHING            = 4,
 108         OCRDMA_MBX_CQE_STATUS_DMA_FAILED                = 5
 109 };
 110
 111 static inline void *ocrdma_get_eqe(struct ocrdma_eq *eq)
 112 {
 113         return eq->q.va + (eq->q.tail * sizeof(struct ocrdma_eqe));
 114 }
 115
 116 static inline void ocrdma_eq_inc_tail(struct ocrdma_eq *eq)
 117 {
 118         eq->q.tail = (eq->q.tail + 1) & (OCRDMA_EQ_LEN - 1);
 119 }
 120
 121 static inline void *ocrdma_get_mcqe(struct ocrdma_dev *dev)
 122 {
 123         struct ocrdma_mcqe *cqe = (struct ocrdma_mcqe *)
 124             (dev->mq.cq.va + (dev->mq.cq.tail * sizeof(struct ocrdma_mcqe)));
 125
 126         if (!(le32_to_cpu(cqe->valid_ae_cmpl_cons) & OCRDMA_MCQE_VALID_MASK))
 127                 return NULL;
 128         return cqe;
 129 }
 130
 131 static inline void ocrdma_mcq_inc_tail(struct ocrdma_dev *dev)
 132 {
 133         dev->mq.cq.tail = (dev->mq.cq.tail + 1) & (OCRDMA_MQ_CQ_LEN - 1);
 134 }
 135
 136 static inline struct ocrdma_mqe *ocrdma_get_mqe(struct ocrdma_dev *dev)
 137 {
 138         return dev->mq.sq.va + (dev->mq.sq.head * sizeof(struct ocrdma_mqe));
 139 }
 140
 141 static inline void ocrdma_mq_inc_head(struct ocrdma_dev *dev)
 142 {
 143         dev->mq.sq.head = (dev->mq.sq.head + 1) & (OCRDMA_MQ_LEN - 1);
 144 }
 145
 146 static inline void *ocrdma_get_mqe_rsp(struct ocrdma_dev *dev)
 147 {
 148         return dev->mq.sq.va + (dev->mqe_ctx.tag * sizeof(struct ocrdma_mqe));
 149 }
 150
 151 enum ib_qp_state get_ibqp_state(enum ocrdma_qp_state qps)
 152 {
 153         switch (qps) {
 154         case OCRDMA_QPS_RST:
 155                 return IB_QPS_RESET;
 156         case OCRDMA_QPS_INIT:
 157                 return IB_QPS_INIT;
 158         case OCRDMA_QPS_RTR:
 159                 return IB_QPS_RTR;
 160         case OCRDMA_QPS_RTS:
 161                 return IB_QPS_RTS;
 162         case OCRDMA_QPS_SQD:
 163         case OCRDMA_QPS_SQ_DRAINING:
 164                 return IB_QPS_SQD;
 165         case OCRDMA_QPS_SQE:
 166                 return IB_QPS_SQE;
 167         case OCRDMA_QPS_ERR:
 168                 return IB_QPS_ERR;
 169         }
 170         return IB_QPS_ERR;
 171 }
 172
 173 static enum ocrdma_qp_state get_ocrdma_qp_state(enum ib_qp_state qps)
 174 {
 175         switch (qps) {
 176         case IB_QPS_RESET:
 177                 return OCRDMA_QPS_RST;
 178         case IB_QPS_INIT:
 179                 return OCRDMA_QPS_INIT;
 180         case IB_QPS_RTR:
 181                 return OCRDMA_QPS_RTR;
 182         case IB_QPS_RTS:
 183                 return OCRDMA_QPS_RTS;
 184         case IB_QPS_SQD:
 185                 return OCRDMA_QPS_SQD;
 186         case IB_QPS_SQE:
 187                 return OCRDMA_QPS_SQE;
 188         case IB_QPS_ERR:
 189                 return OCRDMA_QPS_ERR;
 190         }
 191         return OCRDMA_QPS_ERR;
 192 }
 193
 194 static int ocrdma_get_mbx_errno(u32 status)
 195 {
 196         int err_num;
 197         u8 mbox_status = (status & OCRDMA_MBX_RSP_STATUS_MASK) >>
 198                                         OCRDMA_MBX_RSP_STATUS_SHIFT;
 199         u8 add_status = (status & OCRDMA_MBX_RSP_ASTATUS_MASK) >>
 200                                         OCRDMA_MBX_RSP_ASTATUS_SHIFT;
 201
 202         switch (mbox_status) {
 203         case OCRDMA_MBX_STATUS_OOR:
 204         case OCRDMA_MBX_STATUS_MAX_QP_EXCEEDS:
 205                 err_num = -EAGAIN;
 206                 break;
 207
 208         case OCRDMA_MBX_STATUS_INVALID_PD:
 209         case OCRDMA_MBX_STATUS_INVALID_CQ:
 210         case OCRDMA_MBX_STATUS_INVALID_SRQ_ID:
 211         case OCRDMA_MBX_STATUS_INVALID_QP:
 212         case OCRDMA_MBX_STATUS_INVALID_CHANGE:
 213         case OCRDMA_MBX_STATUS_MTU_EXCEEDS:
 214         case OCRDMA_MBX_STATUS_INVALID_RNR_NAK_TIMER:
 215         case OCRDMA_MBX_STATUS_PKEY_INDEX_INVALID:
 216         case OCRDMA_MBX_STATUS_PKEY_INDEX_EXCEEDS:
 217         case OCRDMA_MBX_STATUS_ILLEGAL_FIELD:
 218         case OCRDMA_MBX_STATUS_INVALID_PBL_ENTRY:
 219         case OCRDMA_MBX_STATUS_INVALID_LKEY:
 220         case OCRDMA_MBX_STATUS_INVALID_VA:
 221         case OCRDMA_MBX_STATUS_INVALID_LENGTH:
 222         case OCRDMA_MBX_STATUS_INVALID_FBO:
 223         case OCRDMA_MBX_STATUS_INVALID_ACC_RIGHTS:
 224         case OCRDMA_MBX_STATUS_INVALID_PBE_SIZE:
 225         case OCRDMA_MBX_STATUS_ATOMIC_OPS_UNSUP:
 226         case OCRDMA_MBX_STATUS_SRQ_ERROR:
 227         case OCRDMA_MBX_STATUS_SRQ_SIZE_UNDERUNS:
 228                 err_num = -EINVAL;
 229                 break;
 230
 231         case OCRDMA_MBX_STATUS_PD_INUSE:
 232         case OCRDMA_MBX_STATUS_QP_BOUND:
 233         case OCRDMA_MBX_STATUS_MW_STILL_BOUND:
 234         case OCRDMA_MBX_STATUS_MW_BOUND:
 235                 err_num = -EBUSY;
 236                 break;
 237
 238         case OCRDMA_MBX_STATUS_RECVQ_RQE_EXCEEDS:
 239         case OCRDMA_MBX_STATUS_SGE_RECV_EXCEEDS:
 240         case OCRDMA_MBX_STATUS_RQE_EXCEEDS:
 241         case OCRDMA_MBX_STATUS_SRQ_LIMIT_EXCEEDS:
 242         case OCRDMA_MBX_STATUS_ORD_EXCEEDS:
 243         case OCRDMA_MBX_STATUS_IRD_EXCEEDS:
 244         case OCRDMA_MBX_STATUS_SENDQ_WQE_EXCEEDS:
 245         case OCRDMA_MBX_STATUS_SGE_SEND_EXCEEDS:
 246         case OCRDMA_MBX_STATUS_SGE_WRITE_EXCEEDS:
 247                 err_num = -ENOBUFS;
 248                 break;
 249
 250         case OCRDMA_MBX_STATUS_FAILED:
 251                 switch (add_status) {
 252                 case OCRDMA_MBX_ADDI_STATUS_INSUFFICIENT_RESOURCES:
 253                         err_num = -EAGAIN;
 254                         break;
 255                 default:
 256                         err_num = -EFAULT;
 257                 }
 258                 break;
 259         default:
 260                 err_num = -EFAULT;
 261         }
 262         return err_num;
 263 }
 264
 265 char *port_speed_string(struct ocrdma_dev *dev)
 266 {
 267         char *str = "";
 268         u16 speeds_supported;
 269
 270         speeds_supported = dev->phy.fixed_speeds_supported |
 271                                 dev->phy.auto_speeds_supported;
 272         if (speeds_supported & OCRDMA_PHY_SPEED_40GBPS)
 273                 str = "40Gbps ";
 274         else if (speeds_supported & OCRDMA_PHY_SPEED_10GBPS)
 275                 str = "10Gbps ";
 276         else if (speeds_supported & OCRDMA_PHY_SPEED_1GBPS)
 277                 str = "1Gbps ";
 278
 279         return str;
 280 }
 281
 282 static int ocrdma_get_mbx_cqe_errno(u16 cqe_status)
 283 {
 284         int err_num = -EINVAL;
 285
 286         switch (cqe_status) {
 287         case OCRDMA_MBX_CQE_STATUS_INSUFFICIENT_PRIVILEDGES:
 288                 err_num = -EPERM;
 289                 break;
 290         case OCRDMA_MBX_CQE_STATUS_INVALID_PARAMETER:
 291                 err_num = -EINVAL;
 292                 break;
 293         case OCRDMA_MBX_CQE_STATUS_INSUFFICIENT_RESOURCES:
 294         case OCRDMA_MBX_CQE_STATUS_QUEUE_FLUSHING:
 295                 err_num = -EINVAL;
 296                 break;
 297         case OCRDMA_MBX_CQE_STATUS_DMA_FAILED:
 298         default:
 299                 err_num = -EINVAL;
 300                 break;
 301         }
 302         return err_num;
 303 }
 304
 305 void ocrdma_ring_cq_db(struct ocrdma_dev *dev, u16 cq_id, bool armed,
 306                        bool solicited, u16 cqe_popped)
 307 {
 308         u32 val = cq_id & OCRDMA_DB_CQ_RING_ID_MASK;
 309
 310         val |= ((cq_id & OCRDMA_DB_CQ_RING_ID_EXT_MASK) <<
 311              OCRDMA_DB_CQ_RING_ID_EXT_MASK_SHIFT);
 312
 313         if (armed)
 314                 val |= (1 << OCRDMA_DB_CQ_REARM_SHIFT);
 315         if (solicited)
 316                 val |= (1 << OCRDMA_DB_CQ_SOLICIT_SHIFT);
 317         val |= (cqe_popped << OCRDMA_DB_CQ_NUM_POPPED_SHIFT);
 318         iowrite32(val, dev->nic_info.db + OCRDMA_DB_CQ_OFFSET);
 319 }
 320
 321 static void ocrdma_ring_mq_db(struct ocrdma_dev *dev)
 322 {
 323         u32 val = 0;
 324
 325         val |= dev->mq.sq.id & OCRDMA_MQ_ID_MASK;
 326         val |= 1 << OCRDMA_MQ_NUM_MQE_SHIFT;
 327         iowrite32(val, dev->nic_info.db + OCRDMA_DB_MQ_OFFSET);
 328 }
 329
 330 static void ocrdma_ring_eq_db(struct ocrdma_dev *dev, u16 eq_id,
 331                               bool arm, bool clear_int, u16 num_eqe)
 332 {
 333         u32 val = 0;
 334
 335         val |= eq_id & OCRDMA_EQ_ID_MASK;
 336         val |= ((eq_id & OCRDMA_EQ_ID_EXT_MASK) << OCRDMA_EQ_ID_EXT_MASK_SHIFT);
 337         if (arm)
 338                 val |= (1 << OCRDMA_REARM_SHIFT);
 339         if (clear_int)
 340                 val |= (1 << OCRDMA_EQ_CLR_SHIFT);
 341         val |= (1 << OCRDMA_EQ_TYPE_SHIFT);
 342         val |= (num_eqe << OCRDMA_NUM_EQE_SHIFT);
 343         iowrite32(val, dev->nic_info.db + OCRDMA_DB_EQ_OFFSET);
 344 }
 345
 346 static void ocrdma_init_mch(struct ocrdma_mbx_hdr *cmd_hdr,
 347                             u8 opcode, u8 subsys, u32 cmd_len)
 348 {
 349         cmd_hdr->subsys_op = (opcode | (subsys << OCRDMA_MCH_SUBSYS_SHIFT));
 350         cmd_hdr->timeout = 20; /* seconds */
 351         cmd_hdr->cmd_len = cmd_len - sizeof(struct ocrdma_mbx_hdr);
 352 }
 353
 354 static void *ocrdma_init_emb_mqe(u8 opcode, u32 cmd_len)
 355 {
 356         struct ocrdma_mqe *mqe;
 357
 358         mqe = kzalloc(sizeof(struct ocrdma_mqe), GFP_KERNEL);
 359         if (!mqe)
 360                 return NULL;
 361         mqe->hdr.spcl_sge_cnt_emb |=
 362                 (OCRDMA_MQE_EMBEDDED << OCRDMA_MQE_HDR_EMB_SHIFT) &
 363                                         OCRDMA_MQE_HDR_EMB_MASK;
 364         mqe->hdr.pyld_len = cmd_len - sizeof(struct ocrdma_mqe_hdr);
 365
 366         ocrdma_init_mch(&mqe->u.emb_req.mch, opcode, OCRDMA_SUBSYS_ROCE,
 367                         mqe->hdr.pyld_len);
 368         return mqe;
 369 }
 370
 371 static void ocrdma_free_q(struct ocrdma_dev *dev, struct ocrdma_queue_info *q)
 372 {
 373         dma_free_coherent(&dev->nic_info.pdev->dev, q->size, q->va, q->dma);
 374 }
 375
 376 static int ocrdma_alloc_q(struct ocrdma_dev *dev,
 377                           struct ocrdma_queue_info *q, u16 len, u16 entry_size)
 378 {
 379         memset(q, 0, sizeof(*q));
 380         q->len = len;
 381         q->entry_size = entry_size;
 382         q->size = len * entry_size;
 383         q->va = dma_alloc_coherent(&dev->nic_info.pdev->dev, q->size, &q->dma,
 384                                    GFP_KERNEL);
 385         if (!q->va)
 386                 return -ENOMEM;
 387         return 0;
 388 }
 389
 390 static void ocrdma_build_q_pages(struct ocrdma_pa *q_pa, int cnt,
 391                                         dma_addr_t host_pa, int hw_page_size)
 392 {
 393         int i;
 394
 395         for (i = 0; i < cnt; i++) {
 396                 q_pa[i].lo = (u32) (host_pa & 0xffffffff);
 397                 q_pa[i].hi = (u32) upper_32_bits(host_pa);
 398                 host_pa += hw_page_size;
 399         }
 400 }
 401
 402 static int ocrdma_mbx_delete_q(struct ocrdma_dev *dev,
 403                                struct ocrdma_queue_info *q, int queue_type)
 404 {
 405         u8 opcode = 0;
 406         int status;
 407         struct ocrdma_delete_q_req *cmd = dev->mbx_cmd;
 408
 409         switch (queue_type) {
 410         case QTYPE_MCCQ:
 411                 opcode = OCRDMA_CMD_DELETE_MQ;
 412                 break;
 413         case QTYPE_CQ:
 414                 opcode = OCRDMA_CMD_DELETE_CQ;
 415                 break;
 416         case QTYPE_EQ:
 417                 opcode = OCRDMA_CMD_DELETE_EQ;
 418                 break;
 419         default:
 420                 BUG();
 421         }
 422         memset(cmd, 0, sizeof(*cmd));
 423         ocrdma_init_mch(&cmd->req, opcode, OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
 424         cmd->id = q->id;
 425
 426         status = be_roce_mcc_cmd(dev->nic_info.netdev,
 427                                  cmd, sizeof(*cmd), NULL, NULL);
 428         if (!status)
 429                 q->created = false;
 430         return status;
 431 }
 432
 433 static int ocrdma_mbx_create_eq(struct ocrdma_dev *dev, struct ocrdma_eq *eq)
 434 {
 435         int status;
 436         struct ocrdma_create_eq_req *cmd = dev->mbx_cmd;
 437         struct ocrdma_create_eq_rsp *rsp = dev->mbx_cmd;
 438
 439         memset(cmd, 0, sizeof(*cmd));
 440         ocrdma_init_mch(&cmd->req, OCRDMA_CMD_CREATE_EQ, OCRDMA_SUBSYS_COMMON,
 441                         sizeof(*cmd));
 442
 443         cmd->req.rsvd_version = 2;
 444         cmd->num_pages = 4;
 445         cmd->valid = OCRDMA_CREATE_EQ_VALID;
 446         cmd->cnt = 4 << OCRDMA_CREATE_EQ_CNT_SHIFT;
 447
 448         ocrdma_build_q_pages(&cmd->pa[0], cmd->num_pages, eq->q.dma,
 449                              PAGE_SIZE_4K);
 450         status = be_roce_mcc_cmd(dev->nic_info.netdev, cmd, sizeof(*cmd), NULL,
 451                                  NULL);
 452         if (!status) {
 453                 eq->q.id = rsp->vector_eqid & 0xffff;
 454                 eq->vector = (rsp->vector_eqid >> 16) & 0xffff;
 455                 eq->q.created = true;
 456         }
 457         return status;
 458 }
 459
 460 static int ocrdma_create_eq(struct ocrdma_dev *dev,
 461                             struct ocrdma_eq *eq, u16 q_len)
 462 {
 463         int status;
 464
 465         status = ocrdma_alloc_q(dev, &eq->q, OCRDMA_EQ_LEN,
 466                                 sizeof(struct ocrdma_eqe));
 467         if (status)
 468                 return status;
 469
 470         status = ocrdma_mbx_create_eq(dev, eq);
 471         if (status)
 472                 goto mbx_err;
 473         eq->dev = dev;
 474         ocrdma_ring_eq_db(dev, eq->q.id, true, true, 0);
 475
 476         return 0;
 477 mbx_err:
 478         ocrdma_free_q(dev, &eq->q);
 479         return status;
 480 }
 481
 482 int ocrdma_get_irq(struct ocrdma_dev *dev, struct ocrdma_eq *eq)
 483 {
 484         int irq;
 485
 486         if (dev->nic_info.intr_mode == BE_INTERRUPT_MODE_INTX)
 487                 irq = dev->nic_info.pdev->irq;
 488         else
 489                 irq = dev->nic_info.msix.vector_list[eq->vector];
 490         return irq;
 491 }
 492
 493 static void _ocrdma_destroy_eq(struct ocrdma_dev *dev, struct ocrdma_eq *eq)
 494 {
 495         if (eq->q.created) {
 496                 ocrdma_mbx_delete_q(dev, &eq->q, QTYPE_EQ);
 497                 ocrdma_free_q(dev, &eq->q);
 498         }
 499 }
 500
 501 static void ocrdma_destroy_eq(struct ocrdma_dev *dev, struct ocrdma_eq *eq)
 502 {
 503         int irq;
 504
 505         /* disarm EQ so that interrupts are not generated
 506          * during freeing and EQ delete is in progress.
 507          */
 508         ocrdma_ring_eq_db(dev, eq->q.id, false, false, 0);
 509
 510         irq = ocrdma_get_irq(dev, eq);
 511         free_irq(irq, eq);
 512         _ocrdma_destroy_eq(dev, eq);
 513 }
 514
 515 static void ocrdma_destroy_eqs(struct ocrdma_dev *dev)
 516 {
 517         int i;
 518
 519         for (i = 0; i < dev->eq_cnt; i++)
 520                 ocrdma_destroy_eq(dev, &dev->eq_tbl[i]);
 521 }
 522
 523 static int ocrdma_mbx_mq_cq_create(struct ocrdma_dev *dev,
 524                                    struct ocrdma_queue_info *cq,
 525                                    struct ocrdma_queue_info *eq)
 526 {
 527         struct ocrdma_create_cq_cmd *cmd = dev->mbx_cmd;
 528         struct ocrdma_create_cq_cmd_rsp *rsp = dev->mbx_cmd;
 529         int status;
 530
 531         memset(cmd, 0, sizeof(*cmd));
 532         ocrdma_init_mch(&cmd->req, OCRDMA_CMD_CREATE_CQ,
 533                         OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
 534
 535         cmd->req.rsvd_version = OCRDMA_CREATE_CQ_VER2;
 536         cmd->pgsz_pgcnt = (cq->size / OCRDMA_MIN_Q_PAGE_SIZE) <<
 537                 OCRDMA_CREATE_CQ_PAGE_SIZE_SHIFT;
 538         cmd->pgsz_pgcnt |= PAGES_4K_SPANNED(cq->va, cq->size);
 539
 540         cmd->ev_cnt_flags = OCRDMA_CREATE_CQ_DEF_FLAGS;
 541         cmd->eqn = eq->id;
 542         cmd->pdid_cqecnt = cq->size / sizeof(struct ocrdma_mcqe);
 543
 544         ocrdma_build_q_pages(&cmd->pa[0], cq->size / OCRDMA_MIN_Q_PAGE_SIZE,
 545                              cq->dma, PAGE_SIZE_4K);
 546         status = be_roce_mcc_cmd(dev->nic_info.netdev,
 547                                  cmd, sizeof(*cmd), NULL, NULL);
 548         if (!status) {
 549                 cq->id = (u16) (rsp->cq_id & OCRDMA_CREATE_CQ_RSP_CQ_ID_MASK);
 550                 cq->created = true;
 551         }
 552         return status;
 553 }
 554
 555 static u32 ocrdma_encoded_q_len(int q_len)
 556 {
 557         u32 len_encoded = fls(q_len);   /* log2(len) + 1 */
 558
 559         if (len_encoded == 16)
 560                 len_encoded = 0;
 561         return len_encoded;
 562 }
 563
 564 static int ocrdma_mbx_create_mq(struct ocrdma_dev *dev,
 565                                 struct ocrdma_queue_info *mq,
 566                                 struct ocrdma_queue_info *cq)
 567 {
 568         int num_pages, status;
 569         struct ocrdma_create_mq_req *cmd = dev->mbx_cmd;
 570         struct ocrdma_create_mq_rsp *rsp = dev->mbx_cmd;
 571         struct ocrdma_pa *pa;
 572
 573         memset(cmd, 0, sizeof(*cmd));
 574         num_pages = PAGES_4K_SPANNED(mq->va, mq->size);
 575
 576         ocrdma_init_mch(&cmd->req, OCRDMA_CMD_CREATE_MQ_EXT,
 577                         OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
 578         cmd->req.rsvd_version = 1;
 579         cmd->cqid_pages = num_pages;
 580         cmd->cqid_pages |= (cq->id << OCRDMA_CREATE_MQ_CQ_ID_SHIFT);
 581         cmd->async_cqid_valid = OCRDMA_CREATE_MQ_ASYNC_CQ_VALID;
 582
 583         cmd->async_event_bitmap = BIT(OCRDMA_ASYNC_GRP5_EVE_CODE);
 584         cmd->async_event_bitmap |= BIT(OCRDMA_ASYNC_RDMA_EVE_CODE);
 585         /* Request link events on this  MQ. */
 586         cmd->async_event_bitmap |= BIT(OCRDMA_ASYNC_LINK_EVE_CODE);
 587
 588         cmd->async_cqid_ringsize = cq->id;
 589         cmd->async_cqid_ringsize |= (ocrdma_encoded_q_len(mq->len) <<
 590                                 OCRDMA_CREATE_MQ_RING_SIZE_SHIFT);
 591         cmd->valid = OCRDMA_CREATE_MQ_VALID;
 592         pa = &cmd->pa[0];
 593
 594         ocrdma_build_q_pages(pa, num_pages, mq->dma, PAGE_SIZE_4K);
 595         status = be_roce_mcc_cmd(dev->nic_info.netdev,
 596                                  cmd, sizeof(*cmd), NULL, NULL);
 597         if (!status) {
 598                 mq->id = rsp->id;
 599                 mq->created = true;
 600         }
 601         return status;
 602 }
 603
 604 static int ocrdma_create_mq(struct ocrdma_dev *dev)
 605 {
 606         int status;
 607
 608         /* Alloc completion queue for Mailbox queue */
 609         status = ocrdma_alloc_q(dev, &dev->mq.cq, OCRDMA_MQ_CQ_LEN,
 610                                 sizeof(struct ocrdma_mcqe));
 611         if (status)
 612                 goto alloc_err;
 613
 614         dev->eq_tbl[0].cq_cnt++;
 615         status = ocrdma_mbx_mq_cq_create(dev, &dev->mq.cq, &dev->eq_tbl[0].q);
 616         if (status)
 617                 goto mbx_cq_free;
 618
 619         memset(&dev->mqe_ctx, 0, sizeof(dev->mqe_ctx));
 620         init_waitqueue_head(&dev->mqe_ctx.cmd_wait);
 621         mutex_init(&dev->mqe_ctx.lock);
 622
 623         /* Alloc Mailbox queue */
 624         status = ocrdma_alloc_q(dev, &dev->mq.sq, OCRDMA_MQ_LEN,
 625                                 sizeof(struct ocrdma_mqe));
 626         if (status)
 627                 goto mbx_cq_destroy;
 628         status = ocrdma_mbx_create_mq(dev, &dev->mq.sq, &dev->mq.cq);
 629         if (status)
 630                 goto mbx_q_free;
 631         ocrdma_ring_cq_db(dev, dev->mq.cq.id, true, false, 0);
 632         return 0;
 633
 634 mbx_q_free:
 635         ocrdma_free_q(dev, &dev->mq.sq);
 636 mbx_cq_destroy:
 637         ocrdma_mbx_delete_q(dev, &dev->mq.cq, QTYPE_CQ);
 638 mbx_cq_free:
 639         ocrdma_free_q(dev, &dev->mq.cq);
 640 alloc_err:
 641         return status;
 642 }
 643
 644 static void ocrdma_destroy_mq(struct ocrdma_dev *dev)
 645 {
 646         struct ocrdma_queue_info *mbxq, *cq;
 647
 648         /* mqe_ctx lock synchronizes with any other pending cmds. */
 649         mutex_lock(&dev->mqe_ctx.lock);
 650         mbxq = &dev->mq.sq;
 651         if (mbxq->created) {
 652                 ocrdma_mbx_delete_q(dev, mbxq, QTYPE_MCCQ);
 653                 ocrdma_free_q(dev, mbxq);
 654         }
 655         mutex_unlock(&dev->mqe_ctx.lock);
 656
 657         cq = &dev->mq.cq;
 658         if (cq->created) {
 659                 ocrdma_mbx_delete_q(dev, cq, QTYPE_CQ);
 660                 ocrdma_free_q(dev, cq);
 661         }
 662 }
 663
 664 static void ocrdma_process_qpcat_error(struct ocrdma_dev *dev,
 665                                        struct ocrdma_qp *qp)
 666 {
 667         enum ib_qp_state new_ib_qps = IB_QPS_ERR;
 668         enum ib_qp_state old_ib_qps;
 669
 670         if (qp == NULL)
 671                 BUG();
 672         ocrdma_qp_state_change(qp, new_ib_qps, &old_ib_qps);
 673 }
 674
 675 static void ocrdma_dispatch_ibevent(struct ocrdma_dev *dev,
 676                                     struct ocrdma_ae_mcqe *cqe)
 677 {
 678         struct ocrdma_qp *qp = NULL;
 679         struct ocrdma_cq *cq = NULL;
 680         struct ib_event ib_evt;
 681         int cq_event = 0;
 682         int qp_event = 1;
 683         int srq_event = 0;
 684         int dev_event = 0;
 685         int type = (cqe->valid_ae_event & OCRDMA_AE_MCQE_EVENT_TYPE_MASK) >>
 686             OCRDMA_AE_MCQE_EVENT_TYPE_SHIFT;
 687         u16 qpid = cqe->qpvalid_qpid & OCRDMA_AE_MCQE_QPID_MASK;
 688         u16 cqid = cqe->cqvalid_cqid & OCRDMA_AE_MCQE_CQID_MASK;
 689
 690         /*
 691          * Some FW version returns wrong qp or cq ids in CQEs.
 692          * Checking whether the IDs are valid
 693          */
 694
 695         if (cqe->qpvalid_qpid & OCRDMA_AE_MCQE_QPVALID) {
 696                 if (qpid < dev->attr.max_qp)
 697                         qp = dev->qp_tbl[qpid];
 698                 if (qp == NULL) {
 699                         pr_err("ocrdma%d:Async event - qpid %u is not valid\n",
 700                                dev->id, qpid);
 701                         return;
 702                 }
 703         }
 704
 705         if (cqe->cqvalid_cqid & OCRDMA_AE_MCQE_CQVALID) {
 706                 if (cqid < dev->attr.max_cq)
 707                         cq = dev->cq_tbl[cqid];
 708                 if (cq == NULL) {
 709                         pr_err("ocrdma%d:Async event - cqid %u is not valid\n",
 710                                dev->id, cqid);
 711                         return;
 712                 }
 713         }
 714
 715         memset(&ib_evt, 0, sizeof(ib_evt));
 716
 717         ib_evt.device = &dev->ibdev;
 718
 719         switch (type) {
 720         case OCRDMA_CQ_ERROR:
 721                 ib_evt.element.cq = &cq->ibcq;
 722                 ib_evt.event = IB_EVENT_CQ_ERR;
 723                 cq_event = 1;
 724                 qp_event = 0;
 725                 break;
 726         case OCRDMA_CQ_OVERRUN_ERROR:
 727                 ib_evt.element.cq = &cq->ibcq;
 728                 ib_evt.event = IB_EVENT_CQ_ERR;
 729                 cq_event = 1;
 730                 qp_event = 0;
 731                 break;
 732         case OCRDMA_CQ_QPCAT_ERROR:
 733                 ib_evt.element.qp = &qp->ibqp;
 734                 ib_evt.event = IB_EVENT_QP_FATAL;
 735                 ocrdma_process_qpcat_error(dev, qp);
 736                 break;
 737         case OCRDMA_QP_ACCESS_ERROR:
 738                 ib_evt.element.qp = &qp->ibqp;
 739                 ib_evt.event = IB_EVENT_QP_ACCESS_ERR;
 740                 break;
 741         case OCRDMA_QP_COMM_EST_EVENT:
 742                 ib_evt.element.qp = &qp->ibqp;
 743                 ib_evt.event = IB_EVENT_COMM_EST;
 744                 break;
 745         case OCRDMA_SQ_DRAINED_EVENT:
 746                 ib_evt.element.qp = &qp->ibqp;
 747                 ib_evt.event = IB_EVENT_SQ_DRAINED;
 748                 break;
 749         case OCRDMA_DEVICE_FATAL_EVENT:
 750                 ib_evt.element.port_num = 1;
 751                 ib_evt.event = IB_EVENT_DEVICE_FATAL;
 752                 qp_event = 0;
 753                 dev_event = 1;
 754                 break;
 755         case OCRDMA_SRQCAT_ERROR:
 756                 ib_evt.element.srq = &qp->srq->ibsrq;
 757                 ib_evt.event = IB_EVENT_SRQ_ERR;
 758                 srq_event = 1;
 759                 qp_event = 0;
 760                 break;
 761         case OCRDMA_SRQ_LIMIT_EVENT:
 762                 ib_evt.element.srq = &qp->srq->ibsrq;
 763                 ib_evt.event = IB_EVENT_SRQ_LIMIT_REACHED;
 764                 srq_event = 1;
 765                 qp_event = 0;
 766                 break;
 767         case OCRDMA_QP_LAST_WQE_EVENT:
 768                 ib_evt.element.qp = &qp->ibqp;
 769                 ib_evt.event = IB_EVENT_QP_LAST_WQE_REACHED;
 770                 break;
 771         default:
 772                 cq_event = 0;
 773                 qp_event = 0;
 774                 srq_event = 0;
 775                 dev_event = 0;
 776                 pr_err("%s() unknown type=0x%x\n", __func__, type);
 777                 break;
 778         }
 779
 780         if (type < OCRDMA_MAX_ASYNC_ERRORS)
 781                 atomic_inc(&dev->async_err_stats[type]);
 782
 783         if (qp_event) {
 784                 if (qp->ibqp.event_handler)
 785                         qp->ibqp.event_handler(&ib_evt, qp->ibqp.qp_context);
 786         } else if (cq_event) {
 787                 if (cq->ibcq.event_handler)
 788                         cq->ibcq.event_handler(&ib_evt, cq->ibcq.cq_context);
 789         } else if (srq_event) {
 790                 if (qp->srq->ibsrq.event_handler)
 791                         qp->srq->ibsrq.event_handler(&ib_evt,
 792                                                      qp->srq->ibsrq.
 793                                                      srq_context);
 794         } else if (dev_event) {
 795                 dev_err(&dev->ibdev.dev, "Fatal event received\n");
 796                 ib_dispatch_event(&ib_evt);
 797         }
 798
 799 }
 800
 801 static void ocrdma_process_grp5_aync(struct ocrdma_dev *dev,
 802                                         struct ocrdma_ae_mcqe *cqe)
 803 {
 804         struct ocrdma_ae_pvid_mcqe *evt;
 805         int type = (cqe->valid_ae_event & OCRDMA_AE_MCQE_EVENT_TYPE_MASK) >>
 806                         OCRDMA_AE_MCQE_EVENT_TYPE_SHIFT;
 807
 808         switch (type) {
 809         case OCRDMA_ASYNC_EVENT_PVID_STATE:
 810                 evt = (struct ocrdma_ae_pvid_mcqe *)cqe;
 811                 if ((evt->tag_enabled & OCRDMA_AE_PVID_MCQE_ENABLED_MASK) >>
 812                         OCRDMA_AE_PVID_MCQE_ENABLED_SHIFT)
 813                         dev->pvid = ((evt->tag_enabled &
 814                                         OCRDMA_AE_PVID_MCQE_TAG_MASK) >>
 815                                         OCRDMA_AE_PVID_MCQE_TAG_SHIFT);
 816                 break;
 817
 818         case OCRDMA_ASYNC_EVENT_COS_VALUE:
 819                 atomic_set(&dev->update_sl, 1);
 820                 break;
 821         default:
 822                 /* Not interested evts. */
 823                 break;
 824         }
 825 }
 826
 827 static void ocrdma_process_link_state(struct ocrdma_dev *dev,
 828                                       struct ocrdma_ae_mcqe *cqe)
 829 {
 830         struct ocrdma_ae_lnkst_mcqe *evt;
 831         u8 lstate;
 832
 833         evt = (struct ocrdma_ae_lnkst_mcqe *)cqe;
 834         lstate = ocrdma_get_ae_link_state(evt->speed_state_ptn);
 835
 836         if (!(lstate & OCRDMA_AE_LSC_LLINK_MASK))
 837                 return;
 838
 839         if (dev->flags & OCRDMA_FLAGS_LINK_STATUS_INIT)
 840                 ocrdma_update_link_state(dev, (lstate & OCRDMA_LINK_ST_MASK));
 841 }
 842
 843 static void ocrdma_process_acqe(struct ocrdma_dev *dev, void *ae_cqe)
 844 {
 845         /* async CQE processing */
 846         struct ocrdma_ae_mcqe *cqe = ae_cqe;
 847         u32 evt_code = (cqe->valid_ae_event & OCRDMA_AE_MCQE_EVENT_CODE_MASK) >>
 848                         OCRDMA_AE_MCQE_EVENT_CODE_SHIFT;
 849         switch (evt_code) {
 850         case OCRDMA_ASYNC_LINK_EVE_CODE:
 851                 ocrdma_process_link_state(dev, cqe);
 852                 break;
 853         case OCRDMA_ASYNC_RDMA_EVE_CODE:
 854                 ocrdma_dispatch_ibevent(dev, cqe);
 855                 break;
 856         case OCRDMA_ASYNC_GRP5_EVE_CODE:
 857                 ocrdma_process_grp5_aync(dev, cqe);
 858                 break;
 859         default:
 860                 pr_err("%s(%d) invalid evt code=0x%x\n", __func__,
 861                        dev->id, evt_code);
 862         }
 863 }
 864
 865 static void ocrdma_process_mcqe(struct ocrdma_dev *dev, struct ocrdma_mcqe *cqe)
 866 {
 867         if (dev->mqe_ctx.tag == cqe->tag_lo && dev->mqe_ctx.cmd_done == false) {
 868                 dev->mqe_ctx.cqe_status = (cqe->status &
 869                      OCRDMA_MCQE_STATUS_MASK) >> OCRDMA_MCQE_STATUS_SHIFT;
 870                 dev->mqe_ctx.ext_status =
 871                     (cqe->status & OCRDMA_MCQE_ESTATUS_MASK)
 872                     >> OCRDMA_MCQE_ESTATUS_SHIFT;
 873                 dev->mqe_ctx.cmd_done = true;
 874                 wake_up(&dev->mqe_ctx.cmd_wait);
 875         } else
 876                 pr_err("%s() cqe for invalid tag0x%x.expected=0x%x\n",
 877                        __func__, cqe->tag_lo, dev->mqe_ctx.tag);
 878 }
 879
 880 static int ocrdma_mq_cq_handler(struct ocrdma_dev *dev, u16 cq_id)
 881 {
 882         u16 cqe_popped = 0;
 883         struct ocrdma_mcqe *cqe;
 884
 885         while (1) {
 886                 cqe = ocrdma_get_mcqe(dev);
 887                 if (cqe == NULL)
 888                         break;
 889                 ocrdma_le32_to_cpu(cqe, sizeof(*cqe));
 890                 cqe_popped += 1;
 891                 if (cqe->valid_ae_cmpl_cons & OCRDMA_MCQE_AE_MASK)
 892                         ocrdma_process_acqe(dev, cqe);
 893                 else if (cqe->valid_ae_cmpl_cons & OCRDMA_MCQE_CMPL_MASK)
 894                         ocrdma_process_mcqe(dev, cqe);
 895                 memset(cqe, 0, sizeof(struct ocrdma_mcqe));
 896                 ocrdma_mcq_inc_tail(dev);
 897         }
 898         ocrdma_ring_cq_db(dev, dev->mq.cq.id, true, false, cqe_popped);
 899         return 0;
 900 }
 901
 902 static struct ocrdma_cq *_ocrdma_qp_buddy_cq_handler(struct ocrdma_dev *dev,
 903                                 struct ocrdma_cq *cq, bool sq)
 904 {
 905         struct ocrdma_qp *qp;
 906         struct list_head *cur;
 907         struct ocrdma_cq *bcq = NULL;
 908         struct list_head *head = sq?(&cq->sq_head):(&cq->rq_head);
 909
 910         list_for_each(cur, head) {
 911                 if (sq)
 912                         qp = list_entry(cur, struct ocrdma_qp, sq_entry);
 913                 else
 914                         qp = list_entry(cur, struct ocrdma_qp, rq_entry);
 915
 916                 if (qp->srq)
 917                         continue;
 918                 /* if wq and rq share the same cq, than comp_handler
 919                  * is already invoked.
 920                  */
 921                 if (qp->sq_cq == qp->rq_cq)
 922                         continue;
 923                 /* if completion came on sq, rq's cq is buddy cq.
 924                  * if completion came on rq, sq's cq is buddy cq.
 925                  */
 926                 if (qp->sq_cq == cq)
 927                         bcq = qp->rq_cq;
 928                 else
 929                         bcq = qp->sq_cq;
 930                 return bcq;
 931         }
 932         return NULL;
 933 }
 934
 935 static void ocrdma_qp_buddy_cq_handler(struct ocrdma_dev *dev,
 936                                        struct ocrdma_cq *cq)
 937 {
 938         unsigned long flags;
 939         struct ocrdma_cq *bcq = NULL;
 940
 941         /* Go through list of QPs in error state which are using this CQ
 942          * and invoke its callback handler to trigger CQE processing for
 943          * error/flushed CQE. It is rare to find more than few entries in
 944          * this list as most consumers stops after getting error CQE.
 945          * List is traversed only once when a matching buddy cq found for a QP.
 946          */
 947         spin_lock_irqsave(&dev->flush_q_lock, flags);
 948         /* Check if buddy CQ is present.
 949          * true - Check for  SQ CQ
 950          * false - Check for RQ CQ
 951          */
 952         bcq = _ocrdma_qp_buddy_cq_handler(dev, cq, true);
 953         if (bcq == NULL)
 954                 bcq = _ocrdma_qp_buddy_cq_handler(dev, cq, false);
 955         spin_unlock_irqrestore(&dev->flush_q_lock, flags);
 956
 957         /* if there is valid buddy cq, look for its completion handler */
 958         if (bcq && bcq->ibcq.comp_handler) {
 959                 spin_lock_irqsave(&bcq->comp_handler_lock, flags);
 960                 (*bcq->ibcq.comp_handler) (&bcq->ibcq, bcq->ibcq.cq_context);
 961                 spin_unlock_irqrestore(&bcq->comp_handler_lock, flags);
 962         }
 963 }
 964
 965 static void ocrdma_qp_cq_handler(struct ocrdma_dev *dev, u16 cq_idx)
 966 {
 967         unsigned long flags;
 968         struct ocrdma_cq *cq;
 969
 970         if (cq_idx >= OCRDMA_MAX_CQ)
 971                 BUG();
 972
 973         cq = dev->cq_tbl[cq_idx];
 974         if (cq == NULL)
 975                 return;
 976
 977         if (cq->ibcq.comp_handler) {
 978                 spin_lock_irqsave(&cq->comp_handler_lock, flags);
 979                 (*cq->ibcq.comp_handler) (&cq->ibcq, cq->ibcq.cq_context);
 980                 spin_unlock_irqrestore(&cq->comp_handler_lock, flags);
 981         }
 982         ocrdma_qp_buddy_cq_handler(dev, cq);
 983 }
 984
 985 static void ocrdma_cq_handler(struct ocrdma_dev *dev, u16 cq_id)
 986 {
 987         /* process the MQ-CQE. */
 988         if (cq_id == dev->mq.cq.id)
 989                 ocrdma_mq_cq_handler(dev, cq_id);
 990         else
 991                 ocrdma_qp_cq_handler(dev, cq_id);
 992 }
 993
 994 static irqreturn_t ocrdma_irq_handler(int irq, void *handle)
 995 {
 996         struct ocrdma_eq *eq = handle;
 997         struct ocrdma_dev *dev = eq->dev;
 998         struct ocrdma_eqe eqe;
 999         struct ocrdma_eqe *ptr;
1000         u16 cq_id;
1001         u8 mcode;
1002         int budget = eq->cq_cnt;
1003
1004         do {
1005                 ptr = ocrdma_get_eqe(eq);
1006                 eqe = *ptr;
1007                 ocrdma_le32_to_cpu(&eqe, sizeof(eqe));
1008                 mcode = (eqe.id_valid & OCRDMA_EQE_MAJOR_CODE_MASK)
1009                                 >> OCRDMA_EQE_MAJOR_CODE_SHIFT;
1010                 if (mcode == OCRDMA_MAJOR_CODE_SENTINAL)
1011                         pr_err("EQ full on eqid = 0x%x, eqe = 0x%x\n",
1012                                eq->q.id, eqe.id_valid);
1013                 if ((eqe.id_valid & OCRDMA_EQE_VALID_MASK) == 0)
1014                         break;
1015
1016                 ptr->id_valid = 0;
1017                 /* ring eq doorbell as soon as its consumed. */
1018                 ocrdma_ring_eq_db(dev, eq->q.id, false, true, 1);
1019                 /* check whether its CQE or not. */
1020                 if ((eqe.id_valid & OCRDMA_EQE_FOR_CQE_MASK) == 0) {
1021                         cq_id = eqe.id_valid >> OCRDMA_EQE_RESOURCE_ID_SHIFT;
1022                         ocrdma_cq_handler(dev, cq_id);
1023                 }
1024                 ocrdma_eq_inc_tail(eq);
1025
1026                 /* There can be a stale EQE after the last bound CQ is
1027                  * destroyed. EQE valid and budget == 0 implies this.
1028                  */
1029                 if (budget)
1030                         budget--;
1031
1032         } while (budget);
1033
1034         eq->aic_obj.eq_intr_cnt++;
1035         ocrdma_ring_eq_db(dev, eq->q.id, true, true, 0);
1036         return IRQ_HANDLED;
1037 }
1038
1039 static void ocrdma_post_mqe(struct ocrdma_dev *dev, struct ocrdma_mqe *cmd)
1040 {
1041         struct ocrdma_mqe *mqe;
1042
1043         dev->mqe_ctx.tag = dev->mq.sq.head;
1044         dev->mqe_ctx.cmd_done = false;
1045         mqe = ocrdma_get_mqe(dev);
1046         cmd->hdr.tag_lo = dev->mq.sq.head;
1047         ocrdma_copy_cpu_to_le32(mqe, cmd, sizeof(*mqe));
1048         /* make sure descriptor is written before ringing doorbell */
1049         wmb();
1050         ocrdma_mq_inc_head(dev);
1051         ocrdma_ring_mq_db(dev);
1052 }
1053
1054 static int ocrdma_wait_mqe_cmpl(struct ocrdma_dev *dev)
1055 {
1056         long status;
1057         /* 30 sec timeout */
1058         status = wait_event_timeout(dev->mqe_ctx.cmd_wait,
1059                                     (dev->mqe_ctx.cmd_done != false),
1060                                     msecs_to_jiffies(30000));
1061         if (status)
1062                 return 0;
1063         else {
1064                 dev->mqe_ctx.fw_error_state = true;
1065                 pr_err("%s(%d) mailbox timeout: fw not responding\n",
1066                        __func__, dev->id);
1067                 return -1;
1068         }
1069 }
1070
1071 /* issue a mailbox command on the MQ */
1072 static int ocrdma_mbx_cmd(struct ocrdma_dev *dev, struct ocrdma_mqe *mqe)
1073 {
1074         int status = 0;
1075         u16 cqe_status, ext_status;
1076         struct ocrdma_mqe *rsp_mqe;
1077         struct ocrdma_mbx_rsp *rsp = NULL;
1078
1079         mutex_lock(&dev->mqe_ctx.lock);
1080         if (dev->mqe_ctx.fw_error_state)
1081                 goto mbx_err;
1082         ocrdma_post_mqe(dev, mqe);
1083         status = ocrdma_wait_mqe_cmpl(dev);
1084         if (status)
1085                 goto mbx_err;
1086         cqe_status = dev->mqe_ctx.cqe_status;
1087         ext_status = dev->mqe_ctx.ext_status;
1088         rsp_mqe = ocrdma_get_mqe_rsp(dev);
1089         ocrdma_copy_le32_to_cpu(mqe, rsp_mqe, (sizeof(*mqe)));
1090         if ((mqe->hdr.spcl_sge_cnt_emb & OCRDMA_MQE_HDR_EMB_MASK) >>
1091                                 OCRDMA_MQE_HDR_EMB_SHIFT)
1092                 rsp = &mqe->u.rsp;
1093
1094         if (cqe_status || ext_status) {
1095                 pr_err("%s() cqe_status=0x%x, ext_status=0x%x,\n",
1096                        __func__, cqe_status, ext_status);
1097                 if (rsp) {
1098                         /* This is for embedded cmds. */
1099                         pr_err("opcode=0x%x, subsystem=0x%x\n",
1100                                (rsp->subsys_op & OCRDMA_MBX_RSP_OPCODE_MASK) >>
1101                                 OCRDMA_MBX_RSP_OPCODE_SHIFT,
1102                                 (rsp->subsys_op & OCRDMA_MBX_RSP_SUBSYS_MASK) >>
1103                                 OCRDMA_MBX_RSP_SUBSYS_SHIFT);
1104                 }
1105                 status = ocrdma_get_mbx_cqe_errno(cqe_status);
1106                 goto mbx_err;
1107         }
1108         /* For non embedded, rsp errors are handled in ocrdma_nonemb_mbx_cmd */
1109         if (rsp && (mqe->u.rsp.status & OCRDMA_MBX_RSP_STATUS_MASK))
1110                 status = ocrdma_get_mbx_errno(mqe->u.rsp.status);
1111 mbx_err:
1112         mutex_unlock(&dev->mqe_ctx.lock);
1113         return status;
1114 }
1115
1116 static int ocrdma_nonemb_mbx_cmd(struct ocrdma_dev *dev, struct ocrdma_mqe *mqe,
1117                                  void *payload_va)
1118 {
1119         int status;
1120         struct ocrdma_mbx_rsp *rsp = payload_va;
1121
1122         if ((mqe->hdr.spcl_sge_cnt_emb & OCRDMA_MQE_HDR_EMB_MASK) >>
1123                                 OCRDMA_MQE_HDR_EMB_SHIFT)
1124                 BUG();
1125
1126         status = ocrdma_mbx_cmd(dev, mqe);
1127         if (!status)
1128                 /* For non embedded, only CQE failures are handled in
1129                  * ocrdma_mbx_cmd. We need to check for RSP errors.
1130                  */
1131                 if (rsp->status & OCRDMA_MBX_RSP_STATUS_MASK)
1132                         status = ocrdma_get_mbx_errno(rsp->status);
1133
1134         if (status)
1135                 pr_err("opcode=0x%x, subsystem=0x%x\n",
1136                        (rsp->subsys_op & OCRDMA_MBX_RSP_OPCODE_MASK) >>
1137                         OCRDMA_MBX_RSP_OPCODE_SHIFT,
1138                         (rsp->subsys_op & OCRDMA_MBX_RSP_SUBSYS_MASK) >>
1139                         OCRDMA_MBX_RSP_SUBSYS_SHIFT);
1140         return status;
1141 }
1142
1143 static void ocrdma_get_attr(struct ocrdma_dev *dev,
1144                               struct ocrdma_dev_attr *attr,
1145                               struct ocrdma_mbx_query_config *rsp)
1146 {
1147         attr->max_pd =
1148             (rsp->max_pd_ca_ack_delay & OCRDMA_MBX_QUERY_CFG_MAX_PD_MASK) >>
1149             OCRDMA_MBX_QUERY_CFG_MAX_PD_SHIFT;
1150         attr->udp_encap = (rsp->max_pd_ca_ack_delay &
1151                            OCRDMA_MBX_QUERY_CFG_L3_TYPE_MASK) >>
1152                            OCRDMA_MBX_QUERY_CFG_L3_TYPE_SHIFT;
1153         attr->max_dpp_pds =
1154            (rsp->max_dpp_pds_credits & OCRDMA_MBX_QUERY_CFG_MAX_DPP_PDS_MASK) >>
1155             OCRDMA_MBX_QUERY_CFG_MAX_DPP_PDS_OFFSET;
1156         attr->max_qp =
1157             (rsp->qp_srq_cq_ird_ord & OCRDMA_MBX_QUERY_CFG_MAX_QP_MASK) >>
1158             OCRDMA_MBX_QUERY_CFG_MAX_QP_SHIFT;
1159         attr->max_srq =
1160                 (rsp->max_srq_rpir_qps & OCRDMA_MBX_QUERY_CFG_MAX_SRQ_MASK) >>
1161                 OCRDMA_MBX_QUERY_CFG_MAX_SRQ_OFFSET;
1162         attr->max_send_sge = ((rsp->max_recv_send_sge &
1163                                OCRDMA_MBX_QUERY_CFG_MAX_SEND_SGE_MASK) >>
1164                               OCRDMA_MBX_QUERY_CFG_MAX_SEND_SGE_SHIFT);
1165         attr->max_recv_sge = (rsp->max_recv_send_sge &
1166                               OCRDMA_MBX_QUERY_CFG_MAX_RECV_SGE_MASK) >>
1167             OCRDMA_MBX_QUERY_CFG_MAX_RECV_SGE_SHIFT;
1168         attr->max_srq_sge = (rsp->max_srq_rqe_sge &
1169                               OCRDMA_MBX_QUERY_CFG_MAX_SRQ_SGE_MASK) >>
1170             OCRDMA_MBX_QUERY_CFG_MAX_SRQ_SGE_OFFSET;
1171         attr->max_rdma_sge = (rsp->max_wr_rd_sge &
1172                               OCRDMA_MBX_QUERY_CFG_MAX_RD_SGE_MASK) >>
1173             OCRDMA_MBX_QUERY_CFG_MAX_RD_SGE_SHIFT;
1174         attr->max_ord_per_qp = (rsp->max_ird_ord_per_qp &
1175                                 OCRDMA_MBX_QUERY_CFG_MAX_ORD_PER_QP_MASK) >>
1176             OCRDMA_MBX_QUERY_CFG_MAX_ORD_PER_QP_SHIFT;
1177         attr->max_ird_per_qp = (rsp->max_ird_ord_per_qp &
1178                                 OCRDMA_MBX_QUERY_CFG_MAX_IRD_PER_QP_MASK) >>
1179             OCRDMA_MBX_QUERY_CFG_MAX_IRD_PER_QP_SHIFT;
1180         attr->cq_overflow_detect = (rsp->qp_srq_cq_ird_ord &
1181                                     OCRDMA_MBX_QUERY_CFG_CQ_OVERFLOW_MASK) >>
1182             OCRDMA_MBX_QUERY_CFG_CQ_OVERFLOW_SHIFT;
1183         attr->srq_supported = (rsp->qp_srq_cq_ird_ord &
1184                                OCRDMA_MBX_QUERY_CFG_SRQ_SUPPORTED_MASK) >>
1185             OCRDMA_MBX_QUERY_CFG_SRQ_SUPPORTED_SHIFT;
1186         attr->local_ca_ack_delay = (rsp->max_pd_ca_ack_delay &
1187                                     OCRDMA_MBX_QUERY_CFG_CA_ACK_DELAY_MASK) >>
1188             OCRDMA_MBX_QUERY_CFG_CA_ACK_DELAY_SHIFT;
1189         attr->max_mw = rsp->max_mw;
1190         attr->max_mr = rsp->max_mr;
1191         attr->max_mr_size = ((u64)rsp->max_mr_size_hi << 32) |
1192                               rsp->max_mr_size_lo;
1193         attr->max_fmr = 0;
1194         attr->max_pages_per_frmr = rsp->max_pages_per_frmr;
1195         attr->max_num_mr_pbl = rsp->max_num_mr_pbl;
1196         attr->max_cqe = rsp->max_cq_cqes_per_cq &
1197                         OCRDMA_MBX_QUERY_CFG_MAX_CQES_PER_CQ_MASK;
1198         attr->max_cq = (rsp->max_cq_cqes_per_cq &
1199                         OCRDMA_MBX_QUERY_CFG_MAX_CQ_MASK) >>
1200                         OCRDMA_MBX_QUERY_CFG_MAX_CQ_OFFSET;
1201         attr->wqe_size = ((rsp->wqe_rqe_stride_max_dpp_cqs &
1202                 OCRDMA_MBX_QUERY_CFG_MAX_WQE_SIZE_MASK) >>
1203                 OCRDMA_MBX_QUERY_CFG_MAX_WQE_SIZE_OFFSET) *
1204                 OCRDMA_WQE_STRIDE;
1205         attr->rqe_size = ((rsp->wqe_rqe_stride_max_dpp_cqs &
1206                 OCRDMA_MBX_QUERY_CFG_MAX_RQE_SIZE_MASK) >>
1207                 OCRDMA_MBX_QUERY_CFG_MAX_RQE_SIZE_OFFSET) *
1208                 OCRDMA_WQE_STRIDE;
1209         attr->max_inline_data =
1210             attr->wqe_size - (sizeof(struct ocrdma_hdr_wqe) +
1211                               sizeof(struct ocrdma_sge));
1212         if (ocrdma_get_asic_type(dev) == OCRDMA_ASIC_GEN_SKH_R) {
1213                 attr->ird = 1;
1214                 attr->ird_page_size = OCRDMA_MIN_Q_PAGE_SIZE;
1215                 attr->num_ird_pages = MAX_OCRDMA_IRD_PAGES;
1216         }
1217         dev->attr.max_wqe = rsp->max_wqes_rqes_per_q >>
1218                  OCRDMA_MBX_QUERY_CFG_MAX_WQES_PER_WQ_OFFSET;
1219         dev->attr.max_rqe = rsp->max_wqes_rqes_per_q &
1220                 OCRDMA_MBX_QUERY_CFG_MAX_RQES_PER_RQ_MASK;
1221 }
1222
1223 static int ocrdma_check_fw_config(struct ocrdma_dev *dev,
1224                                    struct ocrdma_fw_conf_rsp *conf)
1225 {
1226         u32 fn_mode;
1227
1228         fn_mode = conf->fn_mode & OCRDMA_FN_MODE_RDMA;
1229         if (fn_mode != OCRDMA_FN_MODE_RDMA)
1230                 return -EINVAL;
1231         dev->base_eqid = conf->base_eqid;
1232         dev->max_eq = conf->max_eq;
1233         return 0;
1234 }
1235
1236 /* can be issued only during init time. */
1237 static int ocrdma_mbx_query_fw_ver(struct ocrdma_dev *dev)
1238 {
1239         int status = -ENOMEM;
1240         struct ocrdma_mqe *cmd;
1241         struct ocrdma_fw_ver_rsp *rsp;
1242
1243         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_GET_FW_VER, sizeof(*cmd));
1244         if (!cmd)
1245                 return -ENOMEM;
1246         ocrdma_init_mch((struct ocrdma_mbx_hdr *)&cmd->u.cmd[0],
1247                         OCRDMA_CMD_GET_FW_VER,
1248                         OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
1249
1250         status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1251         if (status)
1252                 goto mbx_err;
1253         rsp = (struct ocrdma_fw_ver_rsp *)cmd;
1254         memset(&dev->attr.fw_ver[0], 0, sizeof(dev->attr.fw_ver));
1255         memcpy(&dev->attr.fw_ver[0], &rsp->running_ver[0],
1256                sizeof(rsp->running_ver));
1257         ocrdma_le32_to_cpu(dev->attr.fw_ver, sizeof(rsp->running_ver));
1258 mbx_err:
1259         kfree(cmd);
1260         return status;
1261 }
1262
1263 /* can be issued only during init time. */
1264 static int ocrdma_mbx_query_fw_config(struct ocrdma_dev *dev)
1265 {
1266         int status = -ENOMEM;
1267         struct ocrdma_mqe *cmd;
1268         struct ocrdma_fw_conf_rsp *rsp;
1269
1270         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_GET_FW_CONFIG, sizeof(*cmd));
1271         if (!cmd)
1272                 return -ENOMEM;
1273         ocrdma_init_mch((struct ocrdma_mbx_hdr *)&cmd->u.cmd[0],
1274                         OCRDMA_CMD_GET_FW_CONFIG,
1275                         OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
1276         status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1277         if (status)
1278                 goto mbx_err;
1279         rsp = (struct ocrdma_fw_conf_rsp *)cmd;
1280         status = ocrdma_check_fw_config(dev, rsp);
1281 mbx_err:
1282         kfree(cmd);
1283         return status;
1284 }
1285
1286 int ocrdma_mbx_rdma_stats(struct ocrdma_dev *dev, bool reset)
1287 {
1288         struct ocrdma_rdma_stats_req *req = dev->stats_mem.va;
1289         struct ocrdma_mqe *mqe = &dev->stats_mem.mqe;
1290         struct ocrdma_rdma_stats_resp *old_stats;
1291         int status;
1292
1293         old_stats = kmalloc(sizeof(*old_stats), GFP_KERNEL);
1294         if (old_stats == NULL)
1295                 return -ENOMEM;
1296
1297         memset(mqe, 0, sizeof(*mqe));
1298         mqe->hdr.pyld_len = dev->stats_mem.size;
1299         mqe->hdr.spcl_sge_cnt_emb |=
1300                         (1 << OCRDMA_MQE_HDR_SGE_CNT_SHIFT) &
1301                                 OCRDMA_MQE_HDR_SGE_CNT_MASK;
1302         mqe->u.nonemb_req.sge[0].pa_lo = (u32) (dev->stats_mem.pa & 0xffffffff);
1303         mqe->u.nonemb_req.sge[0].pa_hi = (u32) upper_32_bits(dev->stats_mem.pa);
1304         mqe->u.nonemb_req.sge[0].len = dev->stats_mem.size;
1305
1306         /* Cache the old stats */
1307         memcpy(old_stats, req, sizeof(struct ocrdma_rdma_stats_resp));
1308         memset(req, 0, dev->stats_mem.size);
1309
1310         ocrdma_init_mch((struct ocrdma_mbx_hdr *)req,
1311                         OCRDMA_CMD_GET_RDMA_STATS,
1312                         OCRDMA_SUBSYS_ROCE,
1313                         dev->stats_mem.size);
1314         if (reset)
1315                 req->reset_stats = reset;
1316
1317         status = ocrdma_nonemb_mbx_cmd(dev, mqe, dev->stats_mem.va);
1318         if (status)
1319                 /* Copy from cache, if mbox fails */
1320                 memcpy(req, old_stats, sizeof(struct ocrdma_rdma_stats_resp));
1321         else
1322                 ocrdma_le32_to_cpu(req, dev->stats_mem.size);
1323
1324         kfree(old_stats);
1325         return status;
1326 }
1327
1328 static int ocrdma_mbx_get_ctrl_attribs(struct ocrdma_dev *dev)
1329 {
1330         int status = -ENOMEM;
1331         struct ocrdma_dma_mem dma;
1332         struct ocrdma_mqe *mqe;
1333         struct ocrdma_get_ctrl_attribs_rsp *ctrl_attr_rsp;
1334         struct mgmt_hba_attribs *hba_attribs;
1335
1336         mqe = kzalloc(sizeof(struct ocrdma_mqe), GFP_KERNEL);
1337         if (!mqe)
1338                 return status;
1339
1340         dma.size = sizeof(struct ocrdma_get_ctrl_attribs_rsp);
1341         dma.va   = dma_alloc_coherent(&dev->nic_info.pdev->dev,
1342                                         dma.size, &dma.pa, GFP_KERNEL);
1343         if (!dma.va)
1344                 goto free_mqe;
1345
1346         mqe->hdr.pyld_len = dma.size;
1347         mqe->hdr.spcl_sge_cnt_emb |=
1348                         (1 << OCRDMA_MQE_HDR_SGE_CNT_SHIFT) &
1349                         OCRDMA_MQE_HDR_SGE_CNT_MASK;
1350         mqe->u.nonemb_req.sge[0].pa_lo = (u32) (dma.pa & 0xffffffff);
1351         mqe->u.nonemb_req.sge[0].pa_hi = (u32) upper_32_bits(dma.pa);
1352         mqe->u.nonemb_req.sge[0].len = dma.size;
1353
1354         memset(dma.va, 0, dma.size);
1355         ocrdma_init_mch((struct ocrdma_mbx_hdr *)dma.va,
1356                         OCRDMA_CMD_GET_CTRL_ATTRIBUTES,
1357                         OCRDMA_SUBSYS_COMMON,
1358                         dma.size);
1359
1360         status = ocrdma_nonemb_mbx_cmd(dev, mqe, dma.va);
1361         if (!status) {
1362                 ctrl_attr_rsp = (struct ocrdma_get_ctrl_attribs_rsp *)dma.va;
1363                 hba_attribs = &ctrl_attr_rsp->ctrl_attribs.hba_attribs;
1364
1365                 dev->hba_port_num = (hba_attribs->ptpnum_maxdoms_hbast_cv &
1366                                         OCRDMA_HBA_ATTRB_PTNUM_MASK)
1367                                         >> OCRDMA_HBA_ATTRB_PTNUM_SHIFT;
1368                 strlcpy(dev->model_number,
1369                         hba_attribs->controller_model_number,
1370                         sizeof(dev->model_number));
1371         }
1372         dma_free_coherent(&dev->nic_info.pdev->dev, dma.size, dma.va, dma.pa);
1373 free_mqe:
1374         kfree(mqe);
1375         return status;
1376 }
1377
1378 static int ocrdma_mbx_query_dev(struct ocrdma_dev *dev)
1379 {
1380         int status = -ENOMEM;
1381         struct ocrdma_mbx_query_config *rsp;
1382         struct ocrdma_mqe *cmd;
1383
1384         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_QUERY_CONFIG, sizeof(*cmd));
1385         if (!cmd)
1386                 return status;
1387         status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1388         if (status)
1389                 goto mbx_err;
1390         rsp = (struct ocrdma_mbx_query_config *)cmd;
1391         ocrdma_get_attr(dev, &dev->attr, rsp);
1392 mbx_err:
1393         kfree(cmd);
1394         return status;
1395 }
1396
1397 int ocrdma_mbx_get_link_speed(struct ocrdma_dev *dev, u8 *lnk_speed,
1398                               u8 *lnk_state)
1399 {
1400         int status = -ENOMEM;
1401         struct ocrdma_get_link_speed_rsp *rsp;
1402         struct ocrdma_mqe *cmd;
1403
1404         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_QUERY_NTWK_LINK_CONFIG_V1,
1405                                   sizeof(*cmd));
1406         if (!cmd)
1407                 return status;
1408         ocrdma_init_mch((struct ocrdma_mbx_hdr *)&cmd->u.cmd[0],
1409                         OCRDMA_CMD_QUERY_NTWK_LINK_CONFIG_V1,
1410                         OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
1411
1412         ((struct ocrdma_mbx_hdr *)cmd->u.cmd)->rsvd_version = 0x1;
1413
1414         status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1415         if (status)
1416                 goto mbx_err;
1417
1418         rsp = (struct ocrdma_get_link_speed_rsp *)cmd;
1419         if (lnk_speed)
1420                 *lnk_speed = (rsp->pflt_pps_ld_pnum & OCRDMA_PHY_PS_MASK)
1421                               >> OCRDMA_PHY_PS_SHIFT;
1422         if (lnk_state)
1423                 *lnk_state = (rsp->res_lnk_st & OCRDMA_LINK_ST_MASK);
1424
1425 mbx_err:
1426         kfree(cmd);
1427         return status;
1428 }
1429
1430 static int ocrdma_mbx_get_phy_info(struct ocrdma_dev *dev)
1431 {
1432         int status = -ENOMEM;
1433         struct ocrdma_mqe *cmd;
1434         struct ocrdma_get_phy_info_rsp *rsp;
1435
1436         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_PHY_DETAILS, sizeof(*cmd));
1437         if (!cmd)
1438                 return status;
1439
1440         ocrdma_init_mch((struct ocrdma_mbx_hdr *)&cmd->u.cmd[0],
1441                         OCRDMA_CMD_PHY_DETAILS, OCRDMA_SUBSYS_COMMON,
1442                         sizeof(*cmd));
1443
1444         status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1445         if (status)
1446                 goto mbx_err;
1447
1448         rsp = (struct ocrdma_get_phy_info_rsp *)cmd;
1449         dev->phy.phy_type =
1450                         (rsp->ityp_ptyp & OCRDMA_PHY_TYPE_MASK);
1451         dev->phy.interface_type =
1452                         (rsp->ityp_ptyp & OCRDMA_IF_TYPE_MASK)
1453                                 >> OCRDMA_IF_TYPE_SHIFT;
1454         dev->phy.auto_speeds_supported  =
1455                         (rsp->fspeed_aspeed & OCRDMA_ASPEED_SUPP_MASK);
1456         dev->phy.fixed_speeds_supported =
1457                         (rsp->fspeed_aspeed & OCRDMA_FSPEED_SUPP_MASK)
1458                                 >> OCRDMA_FSPEED_SUPP_SHIFT;
1459 mbx_err:
1460         kfree(cmd);
1461         return status;
1462 }
1463
1464 int ocrdma_mbx_alloc_pd(struct ocrdma_dev *dev, struct ocrdma_pd *pd)
1465 {
1466         int status = -ENOMEM;
1467         struct ocrdma_alloc_pd *cmd;
1468         struct ocrdma_alloc_pd_rsp *rsp;
1469
1470         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_ALLOC_PD, sizeof(*cmd));
1471         if (!cmd)
1472                 return status;
1473         if (pd->dpp_enabled)
1474                 cmd->enable_dpp_rsvd |= OCRDMA_ALLOC_PD_ENABLE_DPP;
1475         status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1476         if (status)
1477                 goto mbx_err;
1478         rsp = (struct ocrdma_alloc_pd_rsp *)cmd;
1479         pd->id = rsp->dpp_page_pdid & OCRDMA_ALLOC_PD_RSP_PDID_MASK;
1480         if (rsp->dpp_page_pdid & OCRDMA_ALLOC_PD_RSP_DPP) {
1481                 pd->dpp_enabled = true;
1482                 pd->dpp_page = rsp->dpp_page_pdid >>
1483                                 OCRDMA_ALLOC_PD_RSP_DPP_PAGE_SHIFT;
1484         } else {
1485                 pd->dpp_enabled = false;
1486                 pd->num_dpp_qp = 0;
1487         }
1488 mbx_err:
1489         kfree(cmd);
1490         return status;
1491 }
1492
1493 int ocrdma_mbx_dealloc_pd(struct ocrdma_dev *dev, struct ocrdma_pd *pd)
1494 {
1495         int status = -ENOMEM;
1496         struct ocrdma_dealloc_pd *cmd;
1497
1498         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DEALLOC_PD, sizeof(*cmd));
1499         if (!cmd)
1500                 return status;
1501         cmd->id = pd->id;
1502         status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1503         kfree(cmd);
1504         return status;
1505 }
1506
1507
1508 static int ocrdma_mbx_alloc_pd_range(struct ocrdma_dev *dev)
1509 {
1510         int status = -ENOMEM;
1511         size_t pd_bitmap_size;
1512         struct ocrdma_alloc_pd_range *cmd;
1513         struct ocrdma_alloc_pd_range_rsp *rsp;
1514
1515         /* Pre allocate the DPP PDs */
1516         if (dev->attr.max_dpp_pds) {
1517                 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_ALLOC_PD_RANGE,
1518                                           sizeof(*cmd));
1519                 if (!cmd)
1520                         return -ENOMEM;
1521                 cmd->pd_count = dev->attr.max_dpp_pds;
1522                 cmd->enable_dpp_rsvd |= OCRDMA_ALLOC_PD_ENABLE_DPP;
1523                 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1524                 rsp = (struct ocrdma_alloc_pd_range_rsp *)cmd;
1525
1526                 if (!status && (rsp->dpp_page_pdid & OCRDMA_ALLOC_PD_RSP_DPP) &&
1527                     rsp->pd_count) {
1528                         dev->pd_mgr->dpp_page_index = rsp->dpp_page_pdid >>
1529                                         OCRDMA_ALLOC_PD_RSP_DPP_PAGE_SHIFT;
1530                         dev->pd_mgr->pd_dpp_start = rsp->dpp_page_pdid &
1531                                         OCRDMA_ALLOC_PD_RNG_RSP_START_PDID_MASK;
1532                         dev->pd_mgr->max_dpp_pd = rsp->pd_count;
1533                         pd_bitmap_size =
1534                                 BITS_TO_LONGS(rsp->pd_count) * sizeof(long);
1535                         dev->pd_mgr->pd_dpp_bitmap = kzalloc(pd_bitmap_size,
1536                                                              GFP_KERNEL);
1537                 }
1538                 kfree(cmd);
1539         }
1540
1541         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_ALLOC_PD_RANGE, sizeof(*cmd));
1542         if (!cmd)
1543                 return -ENOMEM;
1544
1545         cmd->pd_count = dev->attr.max_pd - dev->attr.max_dpp_pds;
1546         status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1547         rsp = (struct ocrdma_alloc_pd_range_rsp *)cmd;
1548         if (!status && rsp->pd_count) {
1549                 dev->pd_mgr->pd_norm_start = rsp->dpp_page_pdid &
1550                                         OCRDMA_ALLOC_PD_RNG_RSP_START_PDID_MASK;
1551                 dev->pd_mgr->max_normal_pd = rsp->pd_count;
1552                 pd_bitmap_size = BITS_TO_LONGS(rsp->pd_count) * sizeof(long);
1553                 dev->pd_mgr->pd_norm_bitmap = kzalloc(pd_bitmap_size,
1554                                                       GFP_KERNEL);
1555         }
1556         kfree(cmd);
1557
1558         if (dev->pd_mgr->pd_norm_bitmap || dev->pd_mgr->pd_dpp_bitmap) {
1559                 /* Enable PD resource manager */
1560                 dev->pd_mgr->pd_prealloc_valid = true;
1561                 return 0;
1562         }
1563         return status;
1564 }
1565
1566 static void ocrdma_mbx_dealloc_pd_range(struct ocrdma_dev *dev)
1567 {
1568         struct ocrdma_dealloc_pd_range *cmd;
1569
1570         /* return normal PDs to firmware */
1571         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DEALLOC_PD_RANGE, sizeof(*cmd));
1572         if (!cmd)
1573                 goto mbx_err;
1574
1575         if (dev->pd_mgr->max_normal_pd) {
1576                 cmd->start_pd_id = dev->pd_mgr->pd_norm_start;
1577                 cmd->pd_count = dev->pd_mgr->max_normal_pd;
1578                 ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1579         }
1580
1581         if (dev->pd_mgr->max_dpp_pd) {
1582                 kfree(cmd);
1583                 /* return DPP PDs to firmware */
1584                 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DEALLOC_PD_RANGE,
1585                                           sizeof(*cmd));
1586                 if (!cmd)
1587                         goto mbx_err;
1588
1589                 cmd->start_pd_id = dev->pd_mgr->pd_dpp_start;
1590                 cmd->pd_count = dev->pd_mgr->max_dpp_pd;
1591                 ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1592         }
1593 mbx_err:
1594         kfree(cmd);
1595 }
1596
1597 void ocrdma_alloc_pd_pool(struct ocrdma_dev *dev)
1598 {
1599         int status;
1600
1601         dev->pd_mgr = kzalloc(sizeof(struct ocrdma_pd_resource_mgr),
1602                               GFP_KERNEL);
1603         if (!dev->pd_mgr)
1604                 return;
1605
1606         status = ocrdma_mbx_alloc_pd_range(dev);
1607         if (status) {
1608                 pr_err("%s(%d) Unable to initialize PD pool, using default.\n",
1609                          __func__, dev->id);
1610         }
1611 }
1612
1613 static void ocrdma_free_pd_pool(struct ocrdma_dev *dev)
1614 {
1615         ocrdma_mbx_dealloc_pd_range(dev);
1616         kfree(dev->pd_mgr->pd_norm_bitmap);
1617         kfree(dev->pd_mgr->pd_dpp_bitmap);
1618         kfree(dev->pd_mgr);
1619 }
1620
1621 static int ocrdma_build_q_conf(u32 *num_entries, int entry_size,
1622                                int *num_pages, int *page_size)
1623 {
1624         int i;
1625         int mem_size;
1626
1627         *num_entries = roundup_pow_of_two(*num_entries);
1628         mem_size = *num_entries * entry_size;
1629         /* find the possible lowest possible multiplier */
1630         for (i = 0; i < OCRDMA_MAX_Q_PAGE_SIZE_CNT; i++) {
1631                 if (mem_size <= (OCRDMA_Q_PAGE_BASE_SIZE << i))
1632                         break;
1633         }
1634         if (i >= OCRDMA_MAX_Q_PAGE_SIZE_CNT)
1635                 return -EINVAL;
1636         mem_size = roundup(mem_size,
1637                        ((OCRDMA_Q_PAGE_BASE_SIZE << i) / OCRDMA_MAX_Q_PAGES));
1638         *num_pages =
1639             mem_size / ((OCRDMA_Q_PAGE_BASE_SIZE << i) / OCRDMA_MAX_Q_PAGES);
1640         *page_size = ((OCRDMA_Q_PAGE_BASE_SIZE << i) / OCRDMA_MAX_Q_PAGES);
1641         *num_entries = mem_size / entry_size;
1642         return 0;
1643 }
1644
1645 static int ocrdma_mbx_create_ah_tbl(struct ocrdma_dev *dev)
1646 {
1647         int i;
1648         int status = -ENOMEM;
1649         int max_ah;
1650         struct ocrdma_create_ah_tbl *cmd;
1651         struct ocrdma_create_ah_tbl_rsp *rsp;
1652         struct pci_dev *pdev = dev->nic_info.pdev;
1653         dma_addr_t pa;
1654         struct ocrdma_pbe *pbes;
1655
1656         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_CREATE_AH_TBL, sizeof(*cmd));
1657         if (!cmd)
1658                 return status;
1659
1660         max_ah = OCRDMA_MAX_AH;
1661         dev->av_tbl.size = sizeof(struct ocrdma_av) * max_ah;
1662
1663         /* number of PBEs in PBL */
1664         cmd->ah_conf = (OCRDMA_AH_TBL_PAGES <<
1665                                 OCRDMA_CREATE_AH_NUM_PAGES_SHIFT) &
1666                                 OCRDMA_CREATE_AH_NUM_PAGES_MASK;
1667
1668         /* page size */
1669         for (i = 0; i < OCRDMA_MAX_Q_PAGE_SIZE_CNT; i++) {
1670                 if (PAGE_SIZE == (OCRDMA_MIN_Q_PAGE_SIZE << i))
1671                         break;
1672         }
1673         cmd->ah_conf |= (i << OCRDMA_CREATE_AH_PAGE_SIZE_SHIFT) &
1674                                 OCRDMA_CREATE_AH_PAGE_SIZE_MASK;
1675
1676         /* ah_entry size */
1677         cmd->ah_conf |= (sizeof(struct ocrdma_av) <<
1678                                 OCRDMA_CREATE_AH_ENTRY_SIZE_SHIFT) &
1679                                 OCRDMA_CREATE_AH_ENTRY_SIZE_MASK;
1680
1681         dev->av_tbl.pbl.va = dma_alloc_coherent(&pdev->dev, PAGE_SIZE,
1682                                                 &dev->av_tbl.pbl.pa,
1683                                                 GFP_KERNEL);
1684         if (dev->av_tbl.pbl.va == NULL)
1685                 goto mem_err;
1686
1687         dev->av_tbl.va = dma_alloc_coherent(&pdev->dev, dev->av_tbl.size,
1688                                             &pa, GFP_KERNEL);
1689         if (dev->av_tbl.va == NULL)
1690                 goto mem_err_ah;
1691         dev->av_tbl.pa = pa;
1692         dev->av_tbl.num_ah = max_ah;
1693         memset(dev->av_tbl.va, 0, dev->av_tbl.size);
1694
1695         pbes = (struct ocrdma_pbe *)dev->av_tbl.pbl.va;
1696         for (i = 0; i < dev->av_tbl.size / OCRDMA_MIN_Q_PAGE_SIZE; i++) {
1697                 pbes[i].pa_lo = (u32)cpu_to_le32(pa & 0xffffffff);
1698                 pbes[i].pa_hi = (u32)cpu_to_le32(upper_32_bits(pa));
1699                 pa += PAGE_SIZE;
1700         }
1701         cmd->tbl_addr[0].lo = (u32)(dev->av_tbl.pbl.pa & 0xFFFFFFFF);
1702         cmd->tbl_addr[0].hi = (u32)upper_32_bits(dev->av_tbl.pbl.pa);
1703         status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1704         if (status)
1705                 goto mbx_err;
1706         rsp = (struct ocrdma_create_ah_tbl_rsp *)cmd;
1707         dev->av_tbl.ahid = rsp->ahid & 0xFFFF;
1708         kfree(cmd);
1709         return 0;
1710
1711 mbx_err:
1712         dma_free_coherent(&pdev->dev, dev->av_tbl.size, dev->av_tbl.va,
1713                           dev->av_tbl.pa);
1714         dev->av_tbl.va = NULL;
1715 mem_err_ah:
1716         dma_free_coherent(&pdev->dev, PAGE_SIZE, dev->av_tbl.pbl.va,
1717                           dev->av_tbl.pbl.pa);
1718         dev->av_tbl.pbl.va = NULL;
1719         dev->av_tbl.size = 0;
1720 mem_err:
1721         kfree(cmd);
1722         return status;
1723 }
1724
1725 static void ocrdma_mbx_delete_ah_tbl(struct ocrdma_dev *dev)
1726 {
1727         struct ocrdma_delete_ah_tbl *cmd;
1728         struct pci_dev *pdev = dev->nic_info.pdev;
1729
1730         if (dev->av_tbl.va == NULL)
1731                 return;
1732
1733         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DELETE_AH_TBL, sizeof(*cmd));
1734         if (!cmd)
1735                 return;
1736         cmd->ahid = dev->av_tbl.ahid;
1737
1738         ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1739         dma_free_coherent(&pdev->dev, dev->av_tbl.size, dev->av_tbl.va,
1740                           dev->av_tbl.pa);
1741         dev->av_tbl.va = NULL;
1742         dma_free_coherent(&pdev->dev, PAGE_SIZE, dev->av_tbl.pbl.va,
1743                           dev->av_tbl.pbl.pa);
1744         kfree(cmd);
1745 }
1746
1747 /* Multiple CQs uses the EQ. This routine returns least used
1748  * EQ to associate with CQ. This will distributes the interrupt
1749  * processing and CPU load to associated EQ, vector and so to that CPU.
1750  */
1751 static u16 ocrdma_bind_eq(struct ocrdma_dev *dev)
1752 {
1753         int i, selected_eq = 0, cq_cnt = 0;
1754         u16 eq_id;
1755
1756         mutex_lock(&dev->dev_lock);
1757         cq_cnt = dev->eq_tbl[0].cq_cnt;
1758         eq_id = dev->eq_tbl[0].q.id;
1759         /* find the EQ which is has the least number of
1760          * CQs associated with it.
1761          */
1762         for (i = 0; i < dev->eq_cnt; i++) {
1763                 if (dev->eq_tbl[i].cq_cnt < cq_cnt) {
1764                         cq_cnt = dev->eq_tbl[i].cq_cnt;
1765                         eq_id = dev->eq_tbl[i].q.id;
1766                         selected_eq = i;
1767                 }
1768         }
1769         dev->eq_tbl[selected_eq].cq_cnt += 1;
1770         mutex_unlock(&dev->dev_lock);
1771         return eq_id;
1772 }
1773
1774 static void ocrdma_unbind_eq(struct ocrdma_dev *dev, u16 eq_id)
1775 {
1776         int i;
1777
1778         mutex_lock(&dev->dev_lock);
1779         i = ocrdma_get_eq_table_index(dev, eq_id);
1780         if (i == -EINVAL)
1781                 BUG();
1782         dev->eq_tbl[i].cq_cnt -= 1;
1783         mutex_unlock(&dev->dev_lock);
1784 }
1785
1786 int ocrdma_mbx_create_cq(struct ocrdma_dev *dev, struct ocrdma_cq *cq,
1787                          int entries, int dpp_cq, u16 pd_id)
1788 {
1789         int status = -ENOMEM; int max_hw_cqe;
1790         struct pci_dev *pdev = dev->nic_info.pdev;
1791         struct ocrdma_create_cq *cmd;
1792         struct ocrdma_create_cq_rsp *rsp;
1793         u32 hw_pages, cqe_size, page_size, cqe_count;
1794
1795         if (entries > dev->attr.max_cqe) {
1796                 pr_err("%s(%d) max_cqe=0x%x, requester_cqe=0x%x\n",
1797                        __func__, dev->id, dev->attr.max_cqe, entries);
1798                 return -EINVAL;
1799         }
1800         if (dpp_cq && (ocrdma_get_asic_type(dev) != OCRDMA_ASIC_GEN_SKH_R))
1801                 return -EINVAL;
1802
1803         if (dpp_cq) {
1804                 cq->max_hw_cqe = 1;
1805                 max_hw_cqe = 1;
1806                 cqe_size = OCRDMA_DPP_CQE_SIZE;
1807                 hw_pages = 1;
1808         } else {
1809                 cq->max_hw_cqe = dev->attr.max_cqe;
1810                 max_hw_cqe = dev->attr.max_cqe;
1811                 cqe_size = sizeof(struct ocrdma_cqe);
1812                 hw_pages = OCRDMA_CREATE_CQ_MAX_PAGES;
1813         }
1814
1815         cq->len = roundup(max_hw_cqe * cqe_size, OCRDMA_MIN_Q_PAGE_SIZE);
1816
1817         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_CREATE_CQ, sizeof(*cmd));
1818         if (!cmd)
1819                 return -ENOMEM;
1820         ocrdma_init_mch(&cmd->cmd.req, OCRDMA_CMD_CREATE_CQ,
1821                         OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
1822         cq->va = dma_alloc_coherent(&pdev->dev, cq->len, &cq->pa, GFP_KERNEL);
1823         if (!cq->va) {
1824                 status = -ENOMEM;
1825                 goto mem_err;
1826         }
1827         page_size = cq->len / hw_pages;
1828         cmd->cmd.pgsz_pgcnt = (page_size / OCRDMA_MIN_Q_PAGE_SIZE) <<
1829                                         OCRDMA_CREATE_CQ_PAGE_SIZE_SHIFT;
1830         cmd->cmd.pgsz_pgcnt |= hw_pages;
1831         cmd->cmd.ev_cnt_flags = OCRDMA_CREATE_CQ_DEF_FLAGS;
1832
1833         cq->eqn = ocrdma_bind_eq(dev);
1834         cmd->cmd.req.rsvd_version = OCRDMA_CREATE_CQ_VER3;
1835         cqe_count = cq->len / cqe_size;
1836         cq->cqe_cnt = cqe_count;
1837         if (cqe_count > 1024) {
1838                 /* Set cnt to 3 to indicate more than 1024 cq entries */
1839                 cmd->cmd.ev_cnt_flags |= (0x3 << OCRDMA_CREATE_CQ_CNT_SHIFT);
1840         } else {
1841                 u8 count = 0;
1842                 switch (cqe_count) {
1843                 case 256:
1844                         count = 0;
1845                         break;
1846                 case 512:
1847                         count = 1;
1848                         break;
1849                 case 1024:
1850                         count = 2;
1851                         break;
1852                 default:
1853                         goto mbx_err;
1854                 }
1855                 cmd->cmd.ev_cnt_flags |= (count << OCRDMA_CREATE_CQ_CNT_SHIFT);
1856         }
1857         /* shared eq between all the consumer cqs. */
1858         cmd->cmd.eqn = cq->eqn;
1859         if (ocrdma_get_asic_type(dev) == OCRDMA_ASIC_GEN_SKH_R) {
1860                 if (dpp_cq)
1861                         cmd->cmd.pgsz_pgcnt |= OCRDMA_CREATE_CQ_DPP <<
1862                                 OCRDMA_CREATE_CQ_TYPE_SHIFT;
1863                 cq->phase_change = false;
1864                 cmd->cmd.pdid_cqecnt = (cq->len / cqe_size);
1865         } else {
1866                 cmd->cmd.pdid_cqecnt = (cq->len / cqe_size) - 1;
1867                 cmd->cmd.ev_cnt_flags |= OCRDMA_CREATE_CQ_FLAGS_AUTO_VALID;
1868                 cq->phase_change = true;
1869         }
1870
1871         /* pd_id valid only for v3 */
1872         cmd->cmd.pdid_cqecnt |= (pd_id <<
1873                 OCRDMA_CREATE_CQ_CMD_PDID_SHIFT);
1874         ocrdma_build_q_pages(&cmd->cmd.pa[0], hw_pages, cq->pa, page_size);
1875         status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1876         if (status)
1877                 goto mbx_err;
1878
1879         rsp = (struct ocrdma_create_cq_rsp *)cmd;
1880         cq->id = (u16) (rsp->rsp.cq_id & OCRDMA_CREATE_CQ_RSP_CQ_ID_MASK);
1881         kfree(cmd);
1882         return 0;
1883 mbx_err:
1884         ocrdma_unbind_eq(dev, cq->eqn);
1885         dma_free_coherent(&pdev->dev, cq->len, cq->va, cq->pa);
1886 mem_err:
1887         kfree(cmd);
1888         return status;
1889 }
1890
1891 int ocrdma_mbx_destroy_cq(struct ocrdma_dev *dev, struct ocrdma_cq *cq)
1892 {
1893         int status = -ENOMEM;
1894         struct ocrdma_destroy_cq *cmd;
1895
1896         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DELETE_CQ, sizeof(*cmd));
1897         if (!cmd)
1898                 return status;
1899         ocrdma_init_mch(&cmd->req, OCRDMA_CMD_DELETE_CQ,
1900                         OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
1901
1902         cmd->bypass_flush_qid |=
1903             (cq->id << OCRDMA_DESTROY_CQ_QID_SHIFT) &
1904             OCRDMA_DESTROY_CQ_QID_MASK;
1905
1906         status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1907         ocrdma_unbind_eq(dev, cq->eqn);
1908         dma_free_coherent(&dev->nic_info.pdev->dev, cq->len, cq->va, cq->pa);
1909         kfree(cmd);
1910         return status;
1911 }
1912
1913 int ocrdma_mbx_alloc_lkey(struct ocrdma_dev *dev, struct ocrdma_hw_mr *hwmr,
1914                           u32 pdid, int addr_check)
1915 {
1916         int status = -ENOMEM;
1917         struct ocrdma_alloc_lkey *cmd;
1918         struct ocrdma_alloc_lkey_rsp *rsp;
1919
1920         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_ALLOC_LKEY, sizeof(*cmd));
1921         if (!cmd)
1922                 return status;
1923         cmd->pdid = pdid;
1924         cmd->pbl_sz_flags |= addr_check;
1925         cmd->pbl_sz_flags |= (hwmr->fr_mr << OCRDMA_ALLOC_LKEY_FMR_SHIFT);
1926         cmd->pbl_sz_flags |=
1927             (hwmr->remote_wr << OCRDMA_ALLOC_LKEY_REMOTE_WR_SHIFT);
1928         cmd->pbl_sz_flags |=
1929             (hwmr->remote_rd << OCRDMA_ALLOC_LKEY_REMOTE_RD_SHIFT);
1930         cmd->pbl_sz_flags |=
1931             (hwmr->local_wr << OCRDMA_ALLOC_LKEY_LOCAL_WR_SHIFT);
1932         cmd->pbl_sz_flags |=
1933             (hwmr->remote_atomic << OCRDMA_ALLOC_LKEY_REMOTE_ATOMIC_SHIFT);
1934         cmd->pbl_sz_flags |=
1935             (hwmr->num_pbls << OCRDMA_ALLOC_LKEY_PBL_SIZE_SHIFT);
1936
1937         status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1938         if (status)
1939                 goto mbx_err;
1940         rsp = (struct ocrdma_alloc_lkey_rsp *)cmd;
1941         hwmr->lkey = rsp->lrkey;
1942 mbx_err:
1943         kfree(cmd);
1944         return status;
1945 }
1946
1947 int ocrdma_mbx_dealloc_lkey(struct ocrdma_dev *dev, int fr_mr, u32 lkey)
1948 {
1949         int status;
1950         struct ocrdma_dealloc_lkey *cmd;
1951
1952         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DEALLOC_LKEY, sizeof(*cmd));
1953         if (!cmd)
1954                 return -ENOMEM;
1955         cmd->lkey = lkey;
1956         cmd->rsvd_frmr = fr_mr ? 1 : 0;
1957         status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1958
1959         kfree(cmd);
1960         return status;
1961 }
1962
1963 static int ocrdma_mbx_reg_mr(struct ocrdma_dev *dev, struct ocrdma_hw_mr *hwmr,
1964                              u32 pdid, u32 pbl_cnt, u32 pbe_size, u32 last)
1965 {
1966         int status = -ENOMEM;
1967         int i;
1968         struct ocrdma_reg_nsmr *cmd;
1969         struct ocrdma_reg_nsmr_rsp *rsp;
1970
1971         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_REGISTER_NSMR, sizeof(*cmd));
1972         if (!cmd)
1973                 return -ENOMEM;
1974         cmd->num_pbl_pdid =
1975             pdid | (hwmr->num_pbls << OCRDMA_REG_NSMR_NUM_PBL_SHIFT);
1976         cmd->fr_mr = hwmr->fr_mr;
1977
1978         cmd->flags_hpage_pbe_sz |= (hwmr->remote_wr <<
1979                                     OCRDMA_REG_NSMR_REMOTE_WR_SHIFT);
1980         cmd->flags_hpage_pbe_sz |= (hwmr->remote_rd <<
1981                                     OCRDMA_REG_NSMR_REMOTE_RD_SHIFT);
1982         cmd->flags_hpage_pbe_sz |= (hwmr->local_wr <<
1983                                     OCRDMA_REG_NSMR_LOCAL_WR_SHIFT);
1984         cmd->flags_hpage_pbe_sz |= (hwmr->remote_atomic <<
1985                                     OCRDMA_REG_NSMR_REMOTE_ATOMIC_SHIFT);
1986         cmd->flags_hpage_pbe_sz |= (hwmr->mw_bind <<
1987                                     OCRDMA_REG_NSMR_BIND_MEMWIN_SHIFT);
1988         cmd->flags_hpage_pbe_sz |= (last << OCRDMA_REG_NSMR_LAST_SHIFT);
1989
1990         cmd->flags_hpage_pbe_sz |= (hwmr->pbe_size / OCRDMA_MIN_HPAGE_SIZE);
1991         cmd->flags_hpage_pbe_sz |= (hwmr->pbl_size / OCRDMA_MIN_HPAGE_SIZE) <<
1992                                         OCRDMA_REG_NSMR_HPAGE_SIZE_SHIFT;
1993         cmd->totlen_low = hwmr->len;
1994         cmd->totlen_high = upper_32_bits(hwmr->len);
1995         cmd->fbo_low = (u32) (hwmr->fbo & 0xffffffff);
1996         cmd->fbo_high = (u32) upper_32_bits(hwmr->fbo);
1997         cmd->va_loaddr = (u32) hwmr->va;
1998         cmd->va_hiaddr = (u32) upper_32_bits(hwmr->va);
1999
2000         for (i = 0; i < pbl_cnt; i++) {
2001                 cmd->pbl[i].lo = (u32) (hwmr->pbl_table[i].pa & 0xffffffff);
2002                 cmd->pbl[i].hi = upper_32_bits(hwmr->pbl_table[i].pa);
2003         }
2004         status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
2005         if (status)
2006                 goto mbx_err;
2007         rsp = (struct ocrdma_reg_nsmr_rsp *)cmd;
2008         hwmr->lkey = rsp->lrkey;
2009 mbx_err:
2010         kfree(cmd);
2011         return status;
2012 }
2013
2014 static int ocrdma_mbx_reg_mr_cont(struct ocrdma_dev *dev,
2015                                   struct ocrdma_hw_mr *hwmr, u32 pbl_cnt,
2016                                   u32 pbl_offset, u32 last)
2017 {
2018         int status;
2019         int i;
2020         struct ocrdma_reg_nsmr_cont *cmd;
2021
2022         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_REGISTER_NSMR_CONT, sizeof(*cmd));
2023         if (!cmd)
2024                 return -ENOMEM;
2025         cmd->lrkey = hwmr->lkey;
2026         cmd->num_pbl_offset = (pbl_cnt << OCRDMA_REG_NSMR_CONT_NUM_PBL_SHIFT) |
2027             (pbl_offset & OCRDMA_REG_NSMR_CONT_PBL_SHIFT_MASK);
2028         cmd->last = last << OCRDMA_REG_NSMR_CONT_LAST_SHIFT;
2029
2030         for (i = 0; i < pbl_cnt; i++) {
2031                 cmd->pbl[i].lo =
2032                     (u32) (hwmr->pbl_table[i + pbl_offset].pa & 0xffffffff);
2033                 cmd->pbl[i].hi =
2034                     upper_32_bits(hwmr->pbl_table[i + pbl_offset].pa);
2035         }
2036         status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
2037
2038         kfree(cmd);
2039         return status;
2040 }
2041
2042 int ocrdma_reg_mr(struct ocrdma_dev *dev,
2043                   struct ocrdma_hw_mr *hwmr, u32 pdid, int acc)
2044 {
2045         int status;
2046         u32 last = 0;
2047         u32 cur_pbl_cnt, pbl_offset;
2048         u32 pending_pbl_cnt = hwmr->num_pbls;
2049
2050         pbl_offset = 0;
2051         cur_pbl_cnt = min(pending_pbl_cnt, MAX_OCRDMA_NSMR_PBL);
2052         if (cur_pbl_cnt == pending_pbl_cnt)
2053                 last = 1;
2054
2055         status = ocrdma_mbx_reg_mr(dev, hwmr, pdid,
2056                                    cur_pbl_cnt, hwmr->pbe_size, last);
2057         if (status) {
2058                 pr_err("%s() status=%d\n", __func__, status);
2059                 return status;
2060         }
2061         /* if there is no more pbls to register then exit. */
2062         if (last)
2063                 return 0;
2064
2065         while (!last) {
2066                 pbl_offset += cur_pbl_cnt;
2067                 pending_pbl_cnt -= cur_pbl_cnt;
2068                 cur_pbl_cnt = min(pending_pbl_cnt, MAX_OCRDMA_NSMR_PBL);
2069                 /* if we reach the end of the pbls, then need to set the last
2070                  * bit, indicating no more pbls to register for this memory key.
2071                  */
2072                 if (cur_pbl_cnt == pending_pbl_cnt)
2073                         last = 1;
2074
2075                 status = ocrdma_mbx_reg_mr_cont(dev, hwmr, cur_pbl_cnt,
2076                                                 pbl_offset, last);
2077                 if (status)
2078                         break;
2079         }
2080         if (status)
2081                 pr_err("%s() err. status=%d\n", __func__, status);
2082
2083         return status;
2084 }
2085
2086 bool ocrdma_is_qp_in_sq_flushlist(struct ocrdma_cq *cq, struct ocrdma_qp *qp)
2087 {
2088         struct ocrdma_qp *tmp;
2089         bool found = false;
2090         list_for_each_entry(tmp, &cq->sq_head, sq_entry) {
2091                 if (qp == tmp) {
2092                         found = true;
2093                         break;
2094                 }
2095         }
2096         return found;
2097 }
2098
2099 bool ocrdma_is_qp_in_rq_flushlist(struct ocrdma_cq *cq, struct ocrdma_qp *qp)
2100 {
2101         struct ocrdma_qp *tmp;
2102         bool found = false;
2103         list_for_each_entry(tmp, &cq->rq_head, rq_entry) {
2104                 if (qp == tmp) {
2105                         found = true;
2106                         break;
2107                 }
2108         }
2109         return found;
2110 }
2111
2112 void ocrdma_flush_qp(struct ocrdma_qp *qp)
2113 {
2114         bool found;
2115         unsigned long flags;
2116         struct ocrdma_dev *dev = get_ocrdma_dev(qp->ibqp.device);
2117
2118         spin_lock_irqsave(&dev->flush_q_lock, flags);
2119         found = ocrdma_is_qp_in_sq_flushlist(qp->sq_cq, qp);
2120         if (!found)
2121                 list_add_tail(&qp->sq_entry, &qp->sq_cq->sq_head);
2122         if (!qp->srq) {
2123                 found = ocrdma_is_qp_in_rq_flushlist(qp->rq_cq, qp);
2124                 if (!found)
2125                         list_add_tail(&qp->rq_entry, &qp->rq_cq->rq_head);
2126         }
2127         spin_unlock_irqrestore(&dev->flush_q_lock, flags);
2128 }
2129
2130 static void ocrdma_init_hwq_ptr(struct ocrdma_qp *qp)
2131 {
2132         qp->sq.head = 0;
2133         qp->sq.tail = 0;
2134         qp->rq.head = 0;
2135         qp->rq.tail = 0;
2136 }
2137
2138 int ocrdma_qp_state_change(struct ocrdma_qp *qp, enum ib_qp_state new_ib_state,
2139                            enum ib_qp_state *old_ib_state)
2140 {
2141         unsigned long flags;
2142         enum ocrdma_qp_state new_state;
2143         new_state = get_ocrdma_qp_state(new_ib_state);
2144
2145         /* sync with wqe and rqe posting */
2146         spin_lock_irqsave(&qp->q_lock, flags);
2147
2148         if (old_ib_state)
2149                 *old_ib_state = get_ibqp_state(qp->state);
2150         if (new_state == qp->state) {
2151                 spin_unlock_irqrestore(&qp->q_lock, flags);
2152                 return 1;
2153         }
2154
2155
2156         if (new_state == OCRDMA_QPS_INIT) {
2157                 ocrdma_init_hwq_ptr(qp);
2158                 ocrdma_del_flush_qp(qp);
2159         } else if (new_state == OCRDMA_QPS_ERR) {
2160                 ocrdma_flush_qp(qp);
2161         }
2162
2163         qp->state = new_state;
2164
2165         spin_unlock_irqrestore(&qp->q_lock, flags);
2166         return 0;
2167 }
2168
2169 static u32 ocrdma_set_create_qp_mbx_access_flags(struct ocrdma_qp *qp)
2170 {
2171         u32 flags = 0;
2172         if (qp->cap_flags & OCRDMA_QP_INB_RD)
2173                 flags |= OCRDMA_CREATE_QP_REQ_INB_RDEN_MASK;
2174         if (qp->cap_flags & OCRDMA_QP_INB_WR)
2175                 flags |= OCRDMA_CREATE_QP_REQ_INB_WREN_MASK;
2176         if (qp->cap_flags & OCRDMA_QP_MW_BIND)
2177                 flags |= OCRDMA_CREATE_QP_REQ_BIND_MEMWIN_MASK;
2178         if (qp->cap_flags & OCRDMA_QP_LKEY0)
2179                 flags |= OCRDMA_CREATE_QP_REQ_ZERO_LKEYEN_MASK;
2180         if (qp->cap_flags & OCRDMA_QP_FAST_REG)
2181                 flags |= OCRDMA_CREATE_QP_REQ_FMR_EN_MASK;
2182         return flags;
2183 }
2184
2185 static int ocrdma_set_create_qp_sq_cmd(struct ocrdma_create_qp_req *cmd,
2186                                         struct ib_qp_init_attr *attrs,
2187                                         struct ocrdma_qp *qp)
2188 {
2189         int status;
2190         u32 len, hw_pages, hw_page_size;
2191         dma_addr_t pa;
2192         struct ocrdma_pd *pd = qp->pd;
2193         struct ocrdma_dev *dev = get_ocrdma_dev(pd->ibpd.device);
2194         struct pci_dev *pdev = dev->nic_info.pdev;
2195         u32 max_wqe_allocated;
2196         u32 max_sges = attrs->cap.max_send_sge;
2197
2198         /* QP1 may exceed 127 */
2199         max_wqe_allocated = min_t(u32, attrs->cap.max_send_wr + 1,
2200                                 dev->attr.max_wqe);
2201
2202         status = ocrdma_build_q_conf(&max_wqe_allocated,
2203                 dev->attr.wqe_size, &hw_pages, &hw_page_size);
2204         if (status) {
2205                 pr_err("%s() req. max_send_wr=0x%x\n", __func__,
2206                        max_wqe_allocated);
2207                 return -EINVAL;
2208         }
2209         qp->sq.max_cnt = max_wqe_allocated;
2210         len = (hw_pages * hw_page_size);
2211
2212         qp->sq.va = dma_alloc_coherent(&pdev->dev, len, &pa, GFP_KERNEL);
2213         if (!qp->sq.va)
2214                 return -EINVAL;
2215         qp->sq.len = len;
2216         qp->sq.pa = pa;
2217         qp->sq.entry_size = dev->attr.wqe_size;
2218         ocrdma_build_q_pages(&cmd->wq_addr[0], hw_pages, pa, hw_page_size);
2219
2220         cmd->type_pgsz_pdn |= (ilog2(hw_page_size / OCRDMA_MIN_Q_PAGE_SIZE)
2221                                 << OCRDMA_CREATE_QP_REQ_SQ_PAGE_SIZE_SHIFT);
2222         cmd->num_wq_rq_pages |= (hw_pages <<
2223                                  OCRDMA_CREATE_QP_REQ_NUM_WQ_PAGES_SHIFT) &
2224             OCRDMA_CREATE_QP_REQ_NUM_WQ_PAGES_MASK;
2225         cmd->max_sge_send_write |= (max_sges <<
2226                                     OCRDMA_CREATE_QP_REQ_MAX_SGE_SEND_SHIFT) &
2227             OCRDMA_CREATE_QP_REQ_MAX_SGE_SEND_MASK;
2228         cmd->max_sge_send_write |= (max_sges <<
2229                                     OCRDMA_CREATE_QP_REQ_MAX_SGE_WRITE_SHIFT) &
2230                                         OCRDMA_CREATE_QP_REQ_MAX_SGE_WRITE_MASK;
2231         cmd->max_wqe_rqe |= (ilog2(qp->sq.max_cnt) <<
2232                              OCRDMA_CREATE_QP_REQ_MAX_WQE_SHIFT) &
2233                                 OCRDMA_CREATE_QP_REQ_MAX_WQE_MASK;
2234         cmd->wqe_rqe_size |= (dev->attr.wqe_size <<
2235                               OCRDMA_CREATE_QP_REQ_WQE_SIZE_SHIFT) &
2236                                 OCRDMA_CREATE_QP_REQ_WQE_SIZE_MASK;
2237         return 0;
2238 }
2239
2240 static int ocrdma_set_create_qp_rq_cmd(struct ocrdma_create_qp_req *cmd,
2241                                         struct ib_qp_init_attr *attrs,
2242                                         struct ocrdma_qp *qp)
2243 {
2244         int status;
2245         u32 len, hw_pages, hw_page_size;
2246         dma_addr_t pa = 0;
2247         struct ocrdma_pd *pd = qp->pd;
2248         struct ocrdma_dev *dev = get_ocrdma_dev(pd->ibpd.device);
2249         struct pci_dev *pdev = dev->nic_info.pdev;
2250         u32 max_rqe_allocated = attrs->cap.max_recv_wr + 1;
2251
2252         status = ocrdma_build_q_conf(&max_rqe_allocated, dev->attr.rqe_size,
2253                                      &hw_pages, &hw_page_size);
2254         if (status) {
2255                 pr_err("%s() req. max_recv_wr=0x%x\n", __func__,
2256                        attrs->cap.max_recv_wr + 1);
2257                 return status;
2258         }
2259         qp->rq.max_cnt = max_rqe_allocated;
2260         len = (hw_pages * hw_page_size);
2261
2262         qp->rq.va = dma_alloc_coherent(&pdev->dev, len, &pa, GFP_KERNEL);
2263         if (!qp->rq.va)
2264                 return -ENOMEM;
2265         qp->rq.pa = pa;
2266         qp->rq.len = len;
2267         qp->rq.entry_size = dev->attr.rqe_size;
2268
2269         ocrdma_build_q_pages(&cmd->rq_addr[0], hw_pages, pa, hw_page_size);
2270         cmd->type_pgsz_pdn |= (ilog2(hw_page_size / OCRDMA_MIN_Q_PAGE_SIZE) <<
2271                 OCRDMA_CREATE_QP_REQ_RQ_PAGE_SIZE_SHIFT);
2272         cmd->num_wq_rq_pages |=
2273             (hw_pages << OCRDMA_CREATE_QP_REQ_NUM_RQ_PAGES_SHIFT) &
2274             OCRDMA_CREATE_QP_REQ_NUM_RQ_PAGES_MASK;
2275         cmd->max_sge_recv_flags |= (attrs->cap.max_recv_sge <<
2276                                 OCRDMA_CREATE_QP_REQ_MAX_SGE_RECV_SHIFT) &
2277                                 OCRDMA_CREATE_QP_REQ_MAX_SGE_RECV_MASK;
2278         cmd->max_wqe_rqe |= (ilog2(qp->rq.max_cnt) <<
2279                                 OCRDMA_CREATE_QP_REQ_MAX_RQE_SHIFT) &
2280                                 OCRDMA_CREATE_QP_REQ_MAX_RQE_MASK;
2281         cmd->wqe_rqe_size |= (dev->attr.rqe_size <<
2282                         OCRDMA_CREATE_QP_REQ_RQE_SIZE_SHIFT) &
2283                         OCRDMA_CREATE_QP_REQ_RQE_SIZE_MASK;
2284         return 0;
2285 }
2286
2287 static void ocrdma_set_create_qp_dpp_cmd(struct ocrdma_create_qp_req *cmd,
2288                                          struct ocrdma_pd *pd,
2289                                          struct ocrdma_qp *qp,
2290                                          u8 enable_dpp_cq, u16 dpp_cq_id)
2291 {
2292         pd->num_dpp_qp--;
2293         qp->dpp_enabled = true;
2294         cmd->max_sge_recv_flags |= OCRDMA_CREATE_QP_REQ_ENABLE_DPP_MASK;
2295         if (!enable_dpp_cq)
2296                 return;
2297         cmd->max_sge_recv_flags |= OCRDMA_CREATE_QP_REQ_ENABLE_DPP_MASK;
2298         cmd->dpp_credits_cqid = dpp_cq_id;
2299         cmd->dpp_credits_cqid |= OCRDMA_CREATE_QP_REQ_DPP_CREDIT_LIMIT <<
2300                                         OCRDMA_CREATE_QP_REQ_DPP_CREDIT_SHIFT;
2301 }
2302
2303 static int ocrdma_set_create_qp_ird_cmd(struct ocrdma_create_qp_req *cmd,
2304                                         struct ocrdma_qp *qp)
2305 {
2306         struct ocrdma_pd *pd = qp->pd;
2307         struct ocrdma_dev *dev = get_ocrdma_dev(pd->ibpd.device);
2308         struct pci_dev *pdev = dev->nic_info.pdev;
2309         dma_addr_t pa = 0;
2310         int ird_page_size = dev->attr.ird_page_size;
2311         int ird_q_len = dev->attr.num_ird_pages * ird_page_size;
2312         struct ocrdma_hdr_wqe *rqe;
2313         int i  = 0;
2314
2315         if (dev->attr.ird == 0)
2316                 return 0;
2317
2318         qp->ird_q_va = dma_alloc_coherent(&pdev->dev, ird_q_len, &pa,
2319                                           GFP_KERNEL);
2320         if (!qp->ird_q_va)
2321                 return -ENOMEM;
2322         ocrdma_build_q_pages(&cmd->ird_addr[0], dev->attr.num_ird_pages,
2323                              pa, ird_page_size);
2324         for (; i < ird_q_len / dev->attr.rqe_size; i++) {
2325                 rqe = (struct ocrdma_hdr_wqe *)(qp->ird_q_va +
2326                         (i * dev->attr.rqe_size));
2327                 rqe->cw = 0;
2328                 rqe->cw |= 2;
2329                 rqe->cw |= (OCRDMA_TYPE_LKEY << OCRDMA_WQE_TYPE_SHIFT);
2330                 rqe->cw |= (8 << OCRDMA_WQE_SIZE_SHIFT);
2331                 rqe->cw |= (8 << OCRDMA_WQE_NXT_WQE_SIZE_SHIFT);
2332         }
2333         return 0;
2334 }
2335
2336 static void ocrdma_get_create_qp_rsp(struct ocrdma_create_qp_rsp *rsp,
2337                                      struct ocrdma_qp *qp,
2338                                      struct ib_qp_init_attr *attrs,
2339                                      u16 *dpp_offset, u16 *dpp_credit_lmt)
2340 {
2341         u32 max_wqe_allocated, max_rqe_allocated;
2342         qp->id = rsp->qp_id & OCRDMA_CREATE_QP_RSP_QP_ID_MASK;
2343         qp->rq.dbid = rsp->sq_rq_id & OCRDMA_CREATE_QP_RSP_RQ_ID_MASK;
2344         qp->sq.dbid = rsp->sq_rq_id >> OCRDMA_CREATE_QP_RSP_SQ_ID_SHIFT;
2345         qp->max_ird = rsp->max_ord_ird & OCRDMA_CREATE_QP_RSP_MAX_IRD_MASK;
2346         qp->max_ord = (rsp->max_ord_ird >> OCRDMA_CREATE_QP_RSP_MAX_ORD_SHIFT);
2347         qp->dpp_enabled = false;
2348         if (rsp->dpp_response & OCRDMA_CREATE_QP_RSP_DPP_ENABLED_MASK) {
2349                 qp->dpp_enabled = true;
2350                 *dpp_credit_lmt = (rsp->dpp_response &
2351                                 OCRDMA_CREATE_QP_RSP_DPP_CREDITS_MASK) >>
2352                                 OCRDMA_CREATE_QP_RSP_DPP_CREDITS_SHIFT;
2353                 *dpp_offset = (rsp->dpp_response &
2354                                 OCRDMA_CREATE_QP_RSP_DPP_PAGE_OFFSET_MASK) >>
2355                                 OCRDMA_CREATE_QP_RSP_DPP_PAGE_OFFSET_SHIFT;
2356         }
2357         max_wqe_allocated =
2358                 rsp->max_wqe_rqe >> OCRDMA_CREATE_QP_RSP_MAX_WQE_SHIFT;
2359         max_wqe_allocated = 1 << max_wqe_allocated;
2360         max_rqe_allocated = 1 << ((u16)rsp->max_wqe_rqe);
2361
2362         qp->sq.max_cnt = max_wqe_allocated;
2363         qp->sq.max_wqe_idx = max_wqe_allocated - 1;
2364
2365         if (!attrs->srq) {
2366                 qp->rq.max_cnt = max_rqe_allocated;
2367                 qp->rq.max_wqe_idx = max_rqe_allocated - 1;
2368         }
2369 }
2370
2371 int ocrdma_mbx_create_qp(struct ocrdma_qp *qp, struct ib_qp_init_attr *attrs,
2372                          u8 enable_dpp_cq, u16 dpp_cq_id, u16 *dpp_offset,
2373                          u16 *dpp_credit_lmt)
2374 {
2375         int status = -ENOMEM;
2376         u32 flags = 0;
2377         struct ocrdma_pd *pd = qp->pd;
2378         struct ocrdma_dev *dev = get_ocrdma_dev(pd->ibpd.device);
2379         struct pci_dev *pdev = dev->nic_info.pdev;
2380         struct ocrdma_cq *cq;
2381         struct ocrdma_create_qp_req *cmd;
2382         struct ocrdma_create_qp_rsp *rsp;
2383         int qptype;
2384
2385         switch (attrs->qp_type) {
2386         case IB_QPT_GSI:
2387                 qptype = OCRDMA_QPT_GSI;
2388                 break;
2389         case IB_QPT_RC:
2390                 qptype = OCRDMA_QPT_RC;
2391                 break;
2392         case IB_QPT_UD:
2393                 qptype = OCRDMA_QPT_UD;
2394                 break;
2395         default:
2396                 return -EINVAL;
2397         }
2398
2399         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_CREATE_QP, sizeof(*cmd));
2400         if (!cmd)
2401                 return status;
2402         cmd->type_pgsz_pdn |= (qptype << OCRDMA_CREATE_QP_REQ_QPT_SHIFT) &
2403                                                 OCRDMA_CREATE_QP_REQ_QPT_MASK;
2404         status = ocrdma_set_create_qp_sq_cmd(cmd, attrs, qp);
2405         if (status)
2406                 goto sq_err;
2407
2408         if (attrs->srq) {
2409                 struct ocrdma_srq *srq = get_ocrdma_srq(attrs->srq);
2410                 cmd->max_sge_recv_flags |= OCRDMA_CREATE_QP_REQ_USE_SRQ_MASK;
2411                 cmd->rq_addr[0].lo = srq->id;
2412                 qp->srq = srq;
2413         } else {
2414                 status = ocrdma_set_create_qp_rq_cmd(cmd, attrs, qp);
2415                 if (status)
2416                         goto rq_err;
2417         }
2418
2419         status = ocrdma_set_create_qp_ird_cmd(cmd, qp);
2420         if (status)
2421                 goto mbx_err;
2422
2423         cmd->type_pgsz_pdn |= (pd->id << OCRDMA_CREATE_QP_REQ_PD_ID_SHIFT) &
2424                                 OCRDMA_CREATE_QP_REQ_PD_ID_MASK;
2425
2426         flags = ocrdma_set_create_qp_mbx_access_flags(qp);
2427
2428         cmd->max_sge_recv_flags |= flags;
2429         cmd->max_ord_ird |= (dev->attr.max_ord_per_qp <<
2430                              OCRDMA_CREATE_QP_REQ_MAX_ORD_SHIFT) &
2431                                 OCRDMA_CREATE_QP_REQ_MAX_ORD_MASK;
2432         cmd->max_ord_ird |= (dev->attr.max_ird_per_qp <<
2433                              OCRDMA_CREATE_QP_REQ_MAX_IRD_SHIFT) &
2434                                 OCRDMA_CREATE_QP_REQ_MAX_IRD_MASK;
2435         cq = get_ocrdma_cq(attrs->send_cq);
2436         cmd->wq_rq_cqid |= (cq->id << OCRDMA_CREATE_QP_REQ_WQ_CQID_SHIFT) &
2437                                 OCRDMA_CREATE_QP_REQ_WQ_CQID_MASK;
2438         qp->sq_cq = cq;
2439         cq = get_ocrdma_cq(attrs->recv_cq);
2440         cmd->wq_rq_cqid |= (cq->id << OCRDMA_CREATE_QP_REQ_RQ_CQID_SHIFT) &
2441                                 OCRDMA_CREATE_QP_REQ_RQ_CQID_MASK;
2442         qp->rq_cq = cq;
2443
2444         if (pd->dpp_enabled && attrs->cap.max_inline_data && pd->num_dpp_qp &&
2445             (attrs->cap.max_inline_data <= dev->attr.max_inline_data)) {
2446                 ocrdma_set_create_qp_dpp_cmd(cmd, pd, qp, enable_dpp_cq,
2447                                              dpp_cq_id);
2448         }
2449
2450         status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
2451         if (status)
2452                 goto mbx_err;
2453         rsp = (struct ocrdma_create_qp_rsp *)cmd;
2454         ocrdma_get_create_qp_rsp(rsp, qp, attrs, dpp_offset, dpp_credit_lmt);
2455         qp->state = OCRDMA_QPS_RST;
2456         kfree(cmd);
2457         return 0;
2458 mbx_err:
2459         if (qp->rq.va)
2460                 dma_free_coherent(&pdev->dev, qp->rq.len, qp->rq.va, qp->rq.pa);
2461 rq_err:
2462         pr_err("%s(%d) rq_err\n", __func__, dev->id);
2463         dma_free_coherent(&pdev->dev, qp->sq.len, qp->sq.va, qp->sq.pa);
2464 sq_err:
2465         pr_err("%s(%d) sq_err\n", __func__, dev->id);
2466         kfree(cmd);
2467         return status;
2468 }
2469
2470 int ocrdma_mbx_query_qp(struct ocrdma_dev *dev, struct ocrdma_qp *qp,
2471                         struct ocrdma_qp_params *param)
2472 {
2473         int status = -ENOMEM;
2474         struct ocrdma_query_qp *cmd;
2475         struct ocrdma_query_qp_rsp *rsp;
2476
2477         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_QUERY_QP, sizeof(*rsp));
2478         if (!cmd)
2479                 return status;
2480         cmd->qp_id = qp->id;
2481         status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
2482         if (status)
2483                 goto mbx_err;
2484         rsp = (struct ocrdma_query_qp_rsp *)cmd;
2485         memcpy(param, &rsp->params, sizeof(struct ocrdma_qp_params));
2486 mbx_err:
2487         kfree(cmd);
2488         return status;
2489 }
2490
2491 static int ocrdma_set_av_params(struct ocrdma_qp *qp,
2492                                 struct ocrdma_modify_qp *cmd,
2493                                 struct ib_qp_attr *attrs,
2494                                 int attr_mask)
2495 {
2496         int status;
2497         struct rdma_ah_attr *ah_attr = &attrs->ah_attr;
2498         const struct ib_gid_attr *sgid_attr;
2499         u32 vlan_id = 0xFFFF;
2500         u8 mac_addr[6], hdr_type;
2501         union {
2502                 struct sockaddr     _sockaddr;
2503                 struct sockaddr_in  _sockaddr_in;
2504                 struct sockaddr_in6 _sockaddr_in6;
2505         } sgid_addr, dgid_addr;
2506         struct ocrdma_dev *dev = get_ocrdma_dev(qp->ibqp.device);
2507         const struct ib_global_route *grh;
2508
2509         if ((rdma_ah_get_ah_flags(ah_attr) & IB_AH_GRH) == 0)
2510                 return -EINVAL;
2511         grh = rdma_ah_read_grh(ah_attr);
2512         if (atomic_cmpxchg(&dev->update_sl, 1, 0))
2513                 ocrdma_init_service_level(dev);
2514         cmd->params.tclass_sq_psn |=
2515             (grh->traffic_class << OCRDMA_QP_PARAMS_TCLASS_SHIFT);
2516         cmd->params.rnt_rc_sl_fl |=
2517             (grh->flow_label & OCRDMA_QP_PARAMS_FLOW_LABEL_MASK);
2518         cmd->params.rnt_rc_sl_fl |= (rdma_ah_get_sl(ah_attr) <<
2519                                      OCRDMA_QP_PARAMS_SL_SHIFT);
2520         cmd->params.hop_lmt_rq_psn |=
2521             (grh->hop_limit << OCRDMA_QP_PARAMS_HOP_LMT_SHIFT);
2522         cmd->flags |= OCRDMA_QP_PARA_FLOW_LBL_VALID;
2523
2524         /* GIDs */
2525         memcpy(&cmd->params.dgid[0], &grh->dgid.raw[0],
2526                sizeof(cmd->params.dgid));
2527
2528         sgid_attr = ah_attr->grh.sgid_attr;
2529         vlan_id = rdma_vlan_dev_vlan_id(sgid_attr->ndev);
2530         memcpy(mac_addr, sgid_attr->ndev->dev_addr, ETH_ALEN);
2531
2532         qp->sgid_idx = grh->sgid_index;
2533         memcpy(&cmd->params.sgid[0], &sgid_attr->gid.raw[0],
2534                sizeof(cmd->params.sgid));
2535         status = ocrdma_resolve_dmac(dev, ah_attr, &mac_addr[0]);
2536         if (status)
2537                 return status;
2538
2539         cmd->params.dmac_b0_to_b3 = mac_addr[0] | (mac_addr[1] << 8) |
2540                                 (mac_addr[2] << 16) | (mac_addr[3] << 24);
2541
2542         hdr_type = rdma_gid_attr_network_type(sgid_attr);
2543         if (hdr_type == RDMA_NETWORK_IPV4) {
2544                 rdma_gid2ip(&sgid_addr._sockaddr, &sgid_attr->gid);
2545                 rdma_gid2ip(&dgid_addr._sockaddr, &grh->dgid);
2546                 memcpy(&cmd->params.dgid[0],
2547                        &dgid_addr._sockaddr_in.sin_addr.s_addr, 4);
2548                 memcpy(&cmd->params.sgid[0],
2549                        &sgid_addr._sockaddr_in.sin_addr.s_addr, 4);
2550         }
2551         /* convert them to LE format. */
2552         ocrdma_cpu_to_le32(&cmd->params.dgid[0], sizeof(cmd->params.dgid));
2553         ocrdma_cpu_to_le32(&cmd->params.sgid[0], sizeof(cmd->params.sgid));
2554         cmd->params.vlan_dmac_b4_to_b5 = mac_addr[4] | (mac_addr[5] << 8);
2555
2556         if (vlan_id == 0xFFFF)
2557                 vlan_id = 0;
2558         if (vlan_id || dev->pfc_state) {
2559                 if (!vlan_id) {
2560                         pr_err("ocrdma%d:Using VLAN with PFC is recommended\n",
2561                                dev->id);
2562                         pr_err("ocrdma%d:Using VLAN 0 for this connection\n",
2563                                dev->id);
2564                 }
2565                 cmd->params.vlan_dmac_b4_to_b5 |=
2566                     vlan_id << OCRDMA_QP_PARAMS_VLAN_SHIFT;
2567                 cmd->flags |= OCRDMA_QP_PARA_VLAN_EN_VALID;
2568                 cmd->params.rnt_rc_sl_fl |=
2569                         (dev->sl & 0x07) << OCRDMA_QP_PARAMS_SL_SHIFT;
2570         }
2571         cmd->params.max_sge_recv_flags |= ((hdr_type <<
2572                                         OCRDMA_QP_PARAMS_FLAGS_L3_TYPE_SHIFT) &
2573                                         OCRDMA_QP_PARAMS_FLAGS_L3_TYPE_MASK);
2574         return 0;
2575 }
2576
2577 static int ocrdma_set_qp_params(struct ocrdma_qp *qp,
2578                                 struct ocrdma_modify_qp *cmd,
2579                                 struct ib_qp_attr *attrs, int attr_mask)
2580 {
2581         int status = 0;
2582         struct ocrdma_dev *dev = get_ocrdma_dev(qp->ibqp.device);
2583
2584         if (attr_mask & IB_QP_PKEY_INDEX) {
2585                 cmd->params.path_mtu_pkey_indx |= (attrs->pkey_index &
2586                                             OCRDMA_QP_PARAMS_PKEY_INDEX_MASK);
2587                 cmd->flags |= OCRDMA_QP_PARA_PKEY_VALID;
2588         }
2589         if (attr_mask & IB_QP_QKEY) {
2590                 qp->qkey = attrs->qkey;
2591                 cmd->params.qkey = attrs->qkey;
2592                 cmd->flags |= OCRDMA_QP_PARA_QKEY_VALID;
2593         }
2594         if (attr_mask & IB_QP_AV) {
2595                 status = ocrdma_set_av_params(qp, cmd, attrs, attr_mask);
2596                 if (status)
2597                         return status;
2598         } else if (qp->qp_type == IB_QPT_GSI || qp->qp_type == IB_QPT_UD) {
2599                 /* set the default mac address for UD, GSI QPs */
2600                 cmd->params.dmac_b0_to_b3 = dev->nic_info.mac_addr[0] |
2601                         (dev->nic_info.mac_addr[1] << 8) |
2602                         (dev->nic_info.mac_addr[2] << 16) |
2603                         (dev->nic_info.mac_addr[3] << 24);
2604                 cmd->params.vlan_dmac_b4_to_b5 = dev->nic_info.mac_addr[4] |
2605                                         (dev->nic_info.mac_addr[5] << 8);
2606         }
2607         if ((attr_mask & IB_QP_EN_SQD_ASYNC_NOTIFY) &&
2608             attrs->en_sqd_async_notify) {
2609                 cmd->params.max_sge_recv_flags |=
2610                         OCRDMA_QP_PARAMS_FLAGS_SQD_ASYNC;
2611                 cmd->flags |= OCRDMA_QP_PARA_DST_QPN_VALID;
2612         }
2613         if (attr_mask & IB_QP_DEST_QPN) {
2614                 cmd->params.ack_to_rnr_rtc_dest_qpn |= (attrs->dest_qp_num &
2615                                 OCRDMA_QP_PARAMS_DEST_QPN_MASK);
2616                 cmd->flags |= OCRDMA_QP_PARA_DST_QPN_VALID;
2617         }
2618         if (attr_mask & IB_QP_PATH_MTU) {
2619                 if (attrs->path_mtu < IB_MTU_512 ||
2620                     attrs->path_mtu > IB_MTU_4096) {
2621                         pr_err("ocrdma%d: IB MTU %d is not supported\n",
2622                                dev->id, ib_mtu_enum_to_int(attrs->path_mtu));
2623                         status = -EINVAL;
2624                         goto pmtu_err;
2625                 }
2626                 cmd->params.path_mtu_pkey_indx |=
2627                     (ib_mtu_enum_to_int(attrs->path_mtu) <<
2628                      OCRDMA_QP_PARAMS_PATH_MTU_SHIFT) &
2629                     OCRDMA_QP_PARAMS_PATH_MTU_MASK;
2630                 cmd->flags |= OCRDMA_QP_PARA_PMTU_VALID;
2631         }
2632         if (attr_mask & IB_QP_TIMEOUT) {
2633                 cmd->params.ack_to_rnr_rtc_dest_qpn |= attrs->timeout <<
2634                     OCRDMA_QP_PARAMS_ACK_TIMEOUT_SHIFT;
2635                 cmd->flags |= OCRDMA_QP_PARA_ACK_TO_VALID;
2636         }
2637         if (attr_mask & IB_QP_RETRY_CNT) {
2638                 cmd->params.rnt_rc_sl_fl |= (attrs->retry_cnt <<
2639                                       OCRDMA_QP_PARAMS_RETRY_CNT_SHIFT) &
2640                     OCRDMA_QP_PARAMS_RETRY_CNT_MASK;
2641                 cmd->flags |= OCRDMA_QP_PARA_RETRY_CNT_VALID;
2642         }
2643         if (attr_mask & IB_QP_MIN_RNR_TIMER) {
2644                 cmd->params.rnt_rc_sl_fl |= (attrs->min_rnr_timer <<
2645                                       OCRDMA_QP_PARAMS_RNR_NAK_TIMER_SHIFT) &
2646                     OCRDMA_QP_PARAMS_RNR_NAK_TIMER_MASK;
2647                 cmd->flags |= OCRDMA_QP_PARA_RNT_VALID;
2648         }
2649         if (attr_mask & IB_QP_RNR_RETRY) {
2650                 cmd->params.ack_to_rnr_rtc_dest_qpn |= (attrs->rnr_retry <<
2651                         OCRDMA_QP_PARAMS_RNR_RETRY_CNT_SHIFT)
2652                         & OCRDMA_QP_PARAMS_RNR_RETRY_CNT_MASK;
2653                 cmd->flags |= OCRDMA_QP_PARA_RRC_VALID;
2654         }
2655         if (attr_mask & IB_QP_SQ_PSN) {
2656                 cmd->params.tclass_sq_psn |= (attrs->sq_psn & 0x00ffffff);
2657                 cmd->flags |= OCRDMA_QP_PARA_SQPSN_VALID;
2658         }
2659         if (attr_mask & IB_QP_RQ_PSN) {
2660                 cmd->params.hop_lmt_rq_psn |= (attrs->rq_psn & 0x00ffffff);
2661                 cmd->flags |= OCRDMA_QP_PARA_RQPSN_VALID;
2662         }
2663         if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC) {
2664                 if (attrs->max_rd_atomic > dev->attr.max_ord_per_qp) {
2665                         status = -EINVAL;
2666                         goto pmtu_err;
2667                 }
2668                 qp->max_ord = attrs->max_rd_atomic;
2669                 cmd->flags |= OCRDMA_QP_PARA_MAX_ORD_VALID;
2670         }
2671         if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) {
2672                 if (attrs->max_dest_rd_atomic > dev->attr.max_ird_per_qp) {
2673                         status = -EINVAL;
2674                         goto pmtu_err;
2675                 }
2676                 qp->max_ird = attrs->max_dest_rd_atomic;
2677                 cmd->flags |= OCRDMA_QP_PARA_MAX_IRD_VALID;
2678         }
2679         cmd->params.max_ord_ird = (qp->max_ord <<
2680                                 OCRDMA_QP_PARAMS_MAX_ORD_SHIFT) |
2681                                 (qp->max_ird & OCRDMA_QP_PARAMS_MAX_IRD_MASK);
2682 pmtu_err:
2683         return status;
2684 }
2685
2686 int ocrdma_mbx_modify_qp(struct ocrdma_dev *dev, struct ocrdma_qp *qp,
2687                          struct ib_qp_attr *attrs, int attr_mask)
2688 {
2689         int status = -ENOMEM;
2690         struct ocrdma_modify_qp *cmd;
2691
2692         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_MODIFY_QP, sizeof(*cmd));
2693         if (!cmd)
2694                 return status;
2695
2696         cmd->params.id = qp->id;
2697         cmd->flags = 0;
2698         if (attr_mask & IB_QP_STATE) {
2699                 cmd->params.max_sge_recv_flags |=
2700                     (get_ocrdma_qp_state(attrs->qp_state) <<
2701                      OCRDMA_QP_PARAMS_STATE_SHIFT) &
2702                     OCRDMA_QP_PARAMS_STATE_MASK;
2703                 cmd->flags |= OCRDMA_QP_PARA_QPS_VALID;
2704         } else {
2705                 cmd->params.max_sge_recv_flags |=
2706                     (qp->state << OCRDMA_QP_PARAMS_STATE_SHIFT) &
2707                     OCRDMA_QP_PARAMS_STATE_MASK;
2708         }
2709
2710         status = ocrdma_set_qp_params(qp, cmd, attrs, attr_mask);
2711         if (status)
2712                 goto mbx_err;
2713         status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
2714         if (status)
2715                 goto mbx_err;
2716
2717 mbx_err:
2718         kfree(cmd);
2719         return status;
2720 }
2721
2722 int ocrdma_mbx_destroy_qp(struct ocrdma_dev *dev, struct ocrdma_qp *qp)
2723 {
2724         int status = -ENOMEM;
2725         struct ocrdma_destroy_qp *cmd;
2726         struct pci_dev *pdev = dev->nic_info.pdev;
2727
2728         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DELETE_QP, sizeof(*cmd));
2729         if (!cmd)
2730                 return status;
2731         cmd->qp_id = qp->id;
2732         status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
2733         if (status)
2734                 goto mbx_err;
2735
2736 mbx_err:
2737         kfree(cmd);
2738         if (qp->sq.va)
2739                 dma_free_coherent(&pdev->dev, qp->sq.len, qp->sq.va, qp->sq.pa);
2740         if (!qp->srq && qp->rq.va)
2741                 dma_free_coherent(&pdev->dev, qp->rq.len, qp->rq.va, qp->rq.pa);
2742         if (qp->dpp_enabled)
2743                 qp->pd->num_dpp_qp++;
2744         return status;
2745 }
2746
2747 int ocrdma_mbx_create_srq(struct ocrdma_dev *dev, struct ocrdma_srq *srq,
2748                           struct ib_srq_init_attr *srq_attr,
2749                           struct ocrdma_pd *pd)
2750 {
2751         int status = -ENOMEM;
2752         int hw_pages, hw_page_size;
2753         int len;
2754         struct ocrdma_create_srq_rsp *rsp;
2755         struct ocrdma_create_srq *cmd;
2756         dma_addr_t pa;
2757         struct pci_dev *pdev = dev->nic_info.pdev;
2758         u32 max_rqe_allocated;
2759
2760         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_CREATE_SRQ, sizeof(*cmd));
2761         if (!cmd)
2762                 return status;
2763
2764         cmd->pgsz_pdid = pd->id & OCRDMA_CREATE_SRQ_PD_ID_MASK;
2765         max_rqe_allocated = srq_attr->attr.max_wr + 1;
2766         status = ocrdma_build_q_conf(&max_rqe_allocated,
2767                                 dev->attr.rqe_size,
2768                                 &hw_pages, &hw_page_size);
2769         if (status) {
2770                 pr_err("%s() req. max_wr=0x%x\n", __func__,
2771                        srq_attr->attr.max_wr);
2772                 status = -EINVAL;
2773                 goto ret;
2774         }
2775         len = hw_pages * hw_page_size;
2776         srq->rq.va = dma_alloc_coherent(&pdev->dev, len, &pa, GFP_KERNEL);
2777         if (!srq->rq.va) {
2778                 status = -ENOMEM;
2779                 goto ret;
2780         }
2781         ocrdma_build_q_pages(&cmd->rq_addr[0], hw_pages, pa, hw_page_size);
2782
2783         srq->rq.entry_size = dev->attr.rqe_size;
2784         srq->rq.pa = pa;
2785         srq->rq.len = len;
2786         srq->rq.max_cnt = max_rqe_allocated;
2787
2788         cmd->max_sge_rqe = ilog2(max_rqe_allocated);
2789         cmd->max_sge_rqe |= srq_attr->attr.max_sge <<
2790                                 OCRDMA_CREATE_SRQ_MAX_SGE_RECV_SHIFT;
2791
2792         cmd->pgsz_pdid |= (ilog2(hw_page_size / OCRDMA_MIN_Q_PAGE_SIZE)
2793                 << OCRDMA_CREATE_SRQ_PG_SZ_SHIFT);
2794         cmd->pages_rqe_sz |= (dev->attr.rqe_size
2795                 << OCRDMA_CREATE_SRQ_RQE_SIZE_SHIFT)
2796                 & OCRDMA_CREATE_SRQ_RQE_SIZE_MASK;
2797         cmd->pages_rqe_sz |= hw_pages << OCRDMA_CREATE_SRQ_NUM_RQ_PAGES_SHIFT;
2798
2799         status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
2800         if (status)
2801                 goto mbx_err;
2802         rsp = (struct ocrdma_create_srq_rsp *)cmd;
2803         srq->id = rsp->id;
2804         srq->rq.dbid = rsp->id;
2805         max_rqe_allocated = ((rsp->max_sge_rqe_allocated &
2806                 OCRDMA_CREATE_SRQ_RSP_MAX_RQE_ALLOCATED_MASK) >>
2807                 OCRDMA_CREATE_SRQ_RSP_MAX_RQE_ALLOCATED_SHIFT);
2808         max_rqe_allocated = (1 << max_rqe_allocated);
2809         srq->rq.max_cnt = max_rqe_allocated;
2810         srq->rq.max_wqe_idx = max_rqe_allocated - 1;
2811         srq->rq.max_sges = (rsp->max_sge_rqe_allocated &
2812                 OCRDMA_CREATE_SRQ_RSP_MAX_SGE_RECV_ALLOCATED_MASK) >>
2813                 OCRDMA_CREATE_SRQ_RSP_MAX_SGE_RECV_ALLOCATED_SHIFT;
2814         goto ret;
2815 mbx_err:
2816         dma_free_coherent(&pdev->dev, srq->rq.len, srq->rq.va, pa);
2817 ret:
2818         kfree(cmd);
2819         return status;
2820 }
2821
2822 int ocrdma_mbx_modify_srq(struct ocrdma_srq *srq, struct ib_srq_attr *srq_attr)
2823 {
2824         int status = -ENOMEM;
2825         struct ocrdma_modify_srq *cmd;
2826         struct ocrdma_pd *pd = srq->pd;
2827         struct ocrdma_dev *dev = get_ocrdma_dev(pd->ibpd.device);
2828
2829         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_MODIFY_SRQ, sizeof(*cmd));
2830         if (!cmd)
2831                 return status;
2832         cmd->id = srq->id;
2833         cmd->limit_max_rqe |= srq_attr->srq_limit <<
2834             OCRDMA_MODIFY_SRQ_LIMIT_SHIFT;
2835         status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
2836         kfree(cmd);
2837         return status;
2838 }
2839
2840 int ocrdma_mbx_query_srq(struct ocrdma_srq *srq, struct ib_srq_attr *srq_attr)
2841 {
2842         int status = -ENOMEM;
2843         struct ocrdma_query_srq *cmd;
2844         struct ocrdma_dev *dev = get_ocrdma_dev(srq->ibsrq.device);
2845
2846         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_QUERY_SRQ, sizeof(*cmd));
2847         if (!cmd)
2848                 return status;
2849         cmd->id = srq->rq.dbid;
2850         status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
2851         if (status == 0) {
2852                 struct ocrdma_query_srq_rsp *rsp =
2853                     (struct ocrdma_query_srq_rsp *)cmd;
2854                 srq_attr->max_sge =
2855                     rsp->srq_lmt_max_sge &
2856                     OCRDMA_QUERY_SRQ_RSP_MAX_SGE_RECV_MASK;
2857                 srq_attr->max_wr =
2858                     rsp->max_rqe_pdid >> OCRDMA_QUERY_SRQ_RSP_MAX_RQE_SHIFT;
2859                 srq_attr->srq_limit = rsp->srq_lmt_max_sge >>
2860                     OCRDMA_QUERY_SRQ_RSP_SRQ_LIMIT_SHIFT;
2861         }
2862         kfree(cmd);
2863         return status;
2864 }
2865
2866 int ocrdma_mbx_destroy_srq(struct ocrdma_dev *dev, struct ocrdma_srq *srq)
2867 {
2868         int status = -ENOMEM;
2869         struct ocrdma_destroy_srq *cmd;
2870         struct pci_dev *pdev = dev->nic_info.pdev;
2871         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DELETE_SRQ, sizeof(*cmd));
2872         if (!cmd)
2873                 return status;
2874         cmd->id = srq->id;
2875         status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
2876         if (srq->rq.va)
2877                 dma_free_coherent(&pdev->dev, srq->rq.len,
2878                                   srq->rq.va, srq->rq.pa);
2879         kfree(cmd);
2880         return status;
2881 }
2882
2883 static int ocrdma_mbx_get_dcbx_config(struct ocrdma_dev *dev, u32 ptype,
2884                                       struct ocrdma_dcbx_cfg *dcbxcfg)
2885 {
2886         int status;
2887         dma_addr_t pa;
2888         struct ocrdma_mqe cmd;
2889
2890         struct ocrdma_get_dcbx_cfg_req *req = NULL;
2891         struct ocrdma_get_dcbx_cfg_rsp *rsp = NULL;
2892         struct pci_dev *pdev = dev->nic_info.pdev;
2893         struct ocrdma_mqe_sge *mqe_sge = cmd.u.nonemb_req.sge;
2894
2895         memset(&cmd, 0, sizeof(struct ocrdma_mqe));
2896         cmd.hdr.pyld_len = max_t (u32, sizeof(struct ocrdma_get_dcbx_cfg_rsp),
2897                                         sizeof(struct ocrdma_get_dcbx_cfg_req));
2898         req = dma_alloc_coherent(&pdev->dev, cmd.hdr.pyld_len, &pa, GFP_KERNEL);
2899         if (!req) {
2900                 status = -ENOMEM;
2901                 goto mem_err;
2902         }
2903
2904         cmd.hdr.spcl_sge_cnt_emb |= (1 << OCRDMA_MQE_HDR_SGE_CNT_SHIFT) &
2905                                         OCRDMA_MQE_HDR_SGE_CNT_MASK;
2906         mqe_sge->pa_lo = (u32) (pa & 0xFFFFFFFFUL);
2907         mqe_sge->pa_hi = (u32) upper_32_bits(pa);
2908         mqe_sge->len = cmd.hdr.pyld_len;
2909
2910         memset(req, 0, sizeof(struct ocrdma_get_dcbx_cfg_req));
2911         ocrdma_init_mch(&req->hdr, OCRDMA_CMD_GET_DCBX_CONFIG,
2912                         OCRDMA_SUBSYS_DCBX, cmd.hdr.pyld_len);
2913         req->param_type = ptype;
2914
2915         status = ocrdma_mbx_cmd(dev, &cmd);
2916         if (status)
2917                 goto mbx_err;
2918
2919         rsp = (struct ocrdma_get_dcbx_cfg_rsp *)req;
2920         ocrdma_le32_to_cpu(rsp, sizeof(struct ocrdma_get_dcbx_cfg_rsp));
2921         memcpy(dcbxcfg, &rsp->cfg, sizeof(struct ocrdma_dcbx_cfg));
2922
2923 mbx_err:
2924         dma_free_coherent(&pdev->dev, cmd.hdr.pyld_len, req, pa);
2925 mem_err:
2926         return status;
2927 }
2928
2929 #define OCRDMA_MAX_SERVICE_LEVEL_INDEX  0x08
2930 #define OCRDMA_DEFAULT_SERVICE_LEVEL    0x05
2931
2932 static int ocrdma_parse_dcbxcfg_rsp(struct ocrdma_dev *dev, int ptype,
2933                                     struct ocrdma_dcbx_cfg *dcbxcfg,
2934                                     u8 *srvc_lvl)
2935 {
2936         int status = -EINVAL, indx, slindx;
2937         int ventry_cnt;
2938         struct ocrdma_app_parameter *app_param;
2939         u8 valid, proto_sel;
2940         u8 app_prio, pfc_prio;
2941         u16 proto;
2942
2943         if (!(dcbxcfg->tcv_aev_opv_st & OCRDMA_DCBX_STATE_MASK)) {
2944                 pr_info("%s ocrdma%d DCBX is disabled\n",
2945                         dev_name(&dev->nic_info.pdev->dev), dev->id);
2946                 goto out;
2947         }
2948
2949         if (!ocrdma_is_enabled_and_synced(dcbxcfg->pfc_state)) {
2950                 pr_info("%s ocrdma%d priority flow control(%s) is %s%s\n",
2951                         dev_name(&dev->nic_info.pdev->dev), dev->id,
2952                         (ptype > 0 ? "operational" : "admin"),
2953                         (dcbxcfg->pfc_state & OCRDMA_STATE_FLAG_ENABLED) ?
2954                         "enabled" : "disabled",
2955                         (dcbxcfg->pfc_state & OCRDMA_STATE_FLAG_SYNC) ?
2956                         "" : ", not sync'ed");
2957                 goto out;
2958         } else {
2959                 pr_info("%s ocrdma%d priority flow control is enabled and sync'ed\n",
2960                         dev_name(&dev->nic_info.pdev->dev), dev->id);
2961         }
2962
2963         ventry_cnt = (dcbxcfg->tcv_aev_opv_st >>
2964                                 OCRDMA_DCBX_APP_ENTRY_SHIFT)
2965                                 & OCRDMA_DCBX_STATE_MASK;
2966
2967         for (indx = 0; indx < ventry_cnt; indx++) {
2968                 app_param = &dcbxcfg->app_param[indx];
2969                 valid = (app_param->valid_proto_app >>
2970                                 OCRDMA_APP_PARAM_VALID_SHIFT)
2971                                 & OCRDMA_APP_PARAM_VALID_MASK;
2972                 proto_sel = (app_param->valid_proto_app
2973                                 >>  OCRDMA_APP_PARAM_PROTO_SEL_SHIFT)
2974                                 & OCRDMA_APP_PARAM_PROTO_SEL_MASK;
2975                 proto = app_param->valid_proto_app &
2976                                 OCRDMA_APP_PARAM_APP_PROTO_MASK;
2977
2978                 if (
2979                         valid && proto == ETH_P_IBOE &&
2980                         proto_sel == OCRDMA_PROTO_SELECT_L2) {
2981                         for (slindx = 0; slindx <
2982                                 OCRDMA_MAX_SERVICE_LEVEL_INDEX; slindx++) {
2983                                 app_prio = ocrdma_get_app_prio(
2984                                                 (u8 *)app_param->app_prio,
2985                                                 slindx);
2986                                 pfc_prio = ocrdma_get_pfc_prio(
2987                                                 (u8 *)dcbxcfg->pfc_prio,
2988                                                 slindx);
2989
2990                                 if (app_prio && pfc_prio) {
2991                                         *srvc_lvl = slindx;
2992                                         status = 0;
2993                                         goto out;
2994                                 }
2995                         }
2996                         if (slindx == OCRDMA_MAX_SERVICE_LEVEL_INDEX) {
2997                                 pr_info("%s ocrdma%d application priority not set for 0x%x protocol\n",
2998                                         dev_name(&dev->nic_info.pdev->dev),
2999                                         dev->id, proto);
3000                         }
3001                 }
3002         }
3003
3004 out:
3005         return status;
3006 }
3007
3008 void ocrdma_init_service_level(struct ocrdma_dev *dev)
3009 {
3010         int status = 0, indx;
3011         struct ocrdma_dcbx_cfg dcbxcfg;
3012         u8 srvc_lvl = OCRDMA_DEFAULT_SERVICE_LEVEL;
3013         int ptype = OCRDMA_PARAMETER_TYPE_OPER;
3014
3015         for (indx = 0; indx < 2; indx++) {
3016                 status = ocrdma_mbx_get_dcbx_config(dev, ptype, &dcbxcfg);
3017                 if (status) {
3018                         pr_err("%s(): status=%d\n", __func__, status);
3019                         ptype = OCRDMA_PARAMETER_TYPE_ADMIN;
3020                         continue;
3021                 }
3022
3023                 status = ocrdma_parse_dcbxcfg_rsp(dev, ptype,
3024                                                   &dcbxcfg, &srvc_lvl);
3025                 if (status) {
3026                         ptype = OCRDMA_PARAMETER_TYPE_ADMIN;
3027                         continue;
3028                 }
3029
3030                 break;
3031         }
3032
3033         if (status)
3034                 pr_info("%s ocrdma%d service level default\n",
3035                         dev_name(&dev->nic_info.pdev->dev), dev->id);
3036         else
3037                 pr_info("%s ocrdma%d service level %d\n",
3038                         dev_name(&dev->nic_info.pdev->dev), dev->id,
3039                         srvc_lvl);
3040
3041         dev->pfc_state = ocrdma_is_enabled_and_synced(dcbxcfg.pfc_state);
3042         dev->sl = srvc_lvl;
3043 }
3044
3045 int ocrdma_alloc_av(struct ocrdma_dev *dev, struct ocrdma_ah *ah)
3046 {
3047         int i;
3048         int status = -EINVAL;
3049         struct ocrdma_av *av;
3050         unsigned long flags;
3051
3052         av = dev->av_tbl.va;
3053         spin_lock_irqsave(&dev->av_tbl.lock, flags);
3054         for (i = 0; i < dev->av_tbl.num_ah; i++) {
3055                 if (av->valid == 0) {
3056                         av->valid = OCRDMA_AV_VALID;
3057                         ah->av = av;
3058                         ah->id = i;
3059                         status = 0;
3060                         break;
3061                 }
3062                 av++;
3063         }
3064         if (i == dev->av_tbl.num_ah)
3065                 status = -EAGAIN;
3066         spin_unlock_irqrestore(&dev->av_tbl.lock, flags);
3067         return status;
3068 }
3069
3070 int ocrdma_free_av(struct ocrdma_dev *dev, struct ocrdma_ah *ah)
3071 {
3072         unsigned long flags;
3073         spin_lock_irqsave(&dev->av_tbl.lock, flags);
3074         ah->av->valid = 0;
3075         spin_unlock_irqrestore(&dev->av_tbl.lock, flags);
3076         return 0;
3077 }
3078
3079 static int ocrdma_create_eqs(struct ocrdma_dev *dev)
3080 {
3081         int num_eq, i, status = 0;
3082         int irq;
3083         unsigned long flags = 0;
3084
3085         num_eq = dev->nic_info.msix.num_vectors -
3086                         dev->nic_info.msix.start_vector;
3087         if (dev->nic_info.intr_mode == BE_INTERRUPT_MODE_INTX) {
3088                 num_eq = 1;
3089                 flags = IRQF_SHARED;
3090         } else {
3091                 num_eq = min_t(u32, num_eq, num_online_cpus());
3092         }
3093
3094         if (!num_eq)
3095                 return -EINVAL;
3096
3097         dev->eq_tbl = kcalloc(num_eq, sizeof(struct ocrdma_eq), GFP_KERNEL);
3098         if (!dev->eq_tbl)
3099                 return -ENOMEM;
3100
3101         for (i = 0; i < num_eq; i++) {
3102                 status = ocrdma_create_eq(dev, &dev->eq_tbl[i],
3103                                         OCRDMA_EQ_LEN);
3104                 if (status) {
3105                         status = -EINVAL;
3106                         break;
3107                 }
3108                 sprintf(dev->eq_tbl[i].irq_name, "ocrdma%d-%d",
3109                         dev->id, i);
3110                 irq = ocrdma_get_irq(dev, &dev->eq_tbl[i]);
3111                 status = request_irq(irq, ocrdma_irq_handler, flags,
3112                                      dev->eq_tbl[i].irq_name,
3113                                      &dev->eq_tbl[i]);
3114                 if (status)
3115                         goto done;
3116                 dev->eq_cnt += 1;
3117         }
3118         /* one eq is sufficient for data path to work */
3119         return 0;
3120 done:
3121         ocrdma_destroy_eqs(dev);
3122         return status;
3123 }
3124
3125 static int ocrdma_mbx_modify_eqd(struct ocrdma_dev *dev, struct ocrdma_eq *eq,
3126                                  int num)
3127 {
3128         int i, status;
3129         struct ocrdma_modify_eqd_req *cmd;
3130
3131         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_MODIFY_EQ_DELAY, sizeof(*cmd));
3132         if (!cmd)
3133                 return -ENOMEM;
3134
3135         ocrdma_init_mch(&cmd->cmd.req, OCRDMA_CMD_MODIFY_EQ_DELAY,
3136                         OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
3137
3138         cmd->cmd.num_eq = num;
3139         for (i = 0; i < num; i++) {
3140                 cmd->cmd.set_eqd[i].eq_id = eq[i].q.id;
3141                 cmd->cmd.set_eqd[i].phase = 0;
3142                 cmd->cmd.set_eqd[i].delay_multiplier =
3143                                 (eq[i].aic_obj.prev_eqd * 65)/100;
3144         }
3145         status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
3146
3147         kfree(cmd);
3148         return status;
3149 }
3150
3151 static int ocrdma_modify_eqd(struct ocrdma_dev *dev, struct ocrdma_eq *eq,
3152                              int num)
3153 {
3154         int num_eqs, i = 0;
3155         if (num > 8) {
3156                 while (num) {
3157                         num_eqs = min(num, 8);
3158                         ocrdma_mbx_modify_eqd(dev, &eq[i], num_eqs);
3159                         i += num_eqs;
3160                         num -= num_eqs;
3161                 }
3162         } else {
3163                 ocrdma_mbx_modify_eqd(dev, eq, num);
3164         }
3165         return 0;
3166 }
3167
3168 void ocrdma_eqd_set_task(struct work_struct *work)
3169 {
3170         struct ocrdma_dev *dev =
3171                 container_of(work, struct ocrdma_dev, eqd_work.work);
3172         struct ocrdma_eq *eq = NULL;
3173         int i, num = 0;
3174         u64 eq_intr;
3175
3176         for (i = 0; i < dev->eq_cnt; i++) {
3177                 eq = &dev->eq_tbl[i];
3178                 if (eq->aic_obj.eq_intr_cnt > eq->aic_obj.prev_eq_intr_cnt) {
3179                         eq_intr = eq->aic_obj.eq_intr_cnt -
3180                                   eq->aic_obj.prev_eq_intr_cnt;
3181                         if ((eq_intr > EQ_INTR_PER_SEC_THRSH_HI) &&
3182                             (eq->aic_obj.prev_eqd == EQ_AIC_MIN_EQD)) {
3183                                 eq->aic_obj.prev_eqd = EQ_AIC_MAX_EQD;
3184                                 num++;
3185                         } else if ((eq_intr < EQ_INTR_PER_SEC_THRSH_LOW) &&
3186                                    (eq->aic_obj.prev_eqd == EQ_AIC_MAX_EQD)) {
3187                                 eq->aic_obj.prev_eqd = EQ_AIC_MIN_EQD;
3188                                 num++;
3189                         }
3190                 }
3191                 eq->aic_obj.prev_eq_intr_cnt = eq->aic_obj.eq_intr_cnt;
3192         }
3193
3194         if (num)
3195                 ocrdma_modify_eqd(dev, &dev->eq_tbl[0], num);
3196         schedule_delayed_work(&dev->eqd_work, msecs_to_jiffies(1000));
3197 }
3198
3199 int ocrdma_init_hw(struct ocrdma_dev *dev)
3200 {
3201         int status;
3202
3203         /* create the eqs  */
3204         status = ocrdma_create_eqs(dev);
3205         if (status)
3206                 goto qpeq_err;
3207         status = ocrdma_create_mq(dev);
3208         if (status)
3209                 goto mq_err;
3210         status = ocrdma_mbx_query_fw_config(dev);
3211         if (status)
3212                 goto conf_err;
3213         status = ocrdma_mbx_query_dev(dev);
3214         if (status)
3215                 goto conf_err;
3216         status = ocrdma_mbx_query_fw_ver(dev);
3217         if (status)
3218                 goto conf_err;
3219         status = ocrdma_mbx_create_ah_tbl(dev);
3220         if (status)
3221                 goto conf_err;
3222         status = ocrdma_mbx_get_phy_info(dev);
3223         if (status)
3224                 goto info_attrb_err;
3225         status = ocrdma_mbx_get_ctrl_attribs(dev);
3226         if (status)
3227                 goto info_attrb_err;
3228
3229         return 0;
3230
3231 info_attrb_err:
3232         ocrdma_mbx_delete_ah_tbl(dev);
3233 conf_err:
3234         ocrdma_destroy_mq(dev);
3235 mq_err:
3236         ocrdma_destroy_eqs(dev);
3237 qpeq_err:
3238         pr_err("%s() status=%d\n", __func__, status);
3239         return status;
3240 }
3241
3242 void ocrdma_cleanup_hw(struct ocrdma_dev *dev)
3243 {
3244         ocrdma_free_pd_pool(dev);
3245         ocrdma_mbx_delete_ah_tbl(dev);
3246
3247         /* cleanup the control path */
3248         ocrdma_destroy_mq(dev);
3249
3250         /* cleanup the eqs */
3251         ocrdma_destroy_eqs(dev);
3252 }