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