kernel/drivers/infiniband/hw/ocrdma/ocrdma_hw.c

   1 /*******************************************************************
   2  * This file is part of the Emulex RoCE Device Driver for          *
   3  * RoCE (RDMA over Converged Ethernet) CNA Adapters.              *
   4  * Copyright (C) 2008-2012 Emulex. All rights reserved.            *
   5  * EMULEX and SLI are trademarks of Emulex.                        *
   6  * www.emulex.com                                                  *
   7  *                                                                 *
   8  * This program is free software; you can redistribute it and/or   *
   9  * modify it under the terms of version 2 of the GNU General       *
  10  * Public License as published by the Free Software Foundation.    *
  11  * This program is distributed in the hope that it will be useful. *
  12  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  13  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  14  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  15  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  16  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  17  * more details, a copy of which can be found in the file COPYING  *
  18  * included with this package.                                     *
  19  *
  20  * Contact Information:
  21  * linux-drivers@emulex.com
  22  *
  23  * Emulex
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  25  * Costa Mesa, CA 92626
  26  *******************************************************************/
  27
  28 #include <linux/sched.h>
  29 #include <linux/interrupt.h>
  30 #include <linux/log2.h>
  31 #include <linux/dma-mapping.h>
  32
  33 #include <rdma/ib_verbs.h>
  34 #include <rdma/ib_user_verbs.h>
  35
  36 #include "ocrdma.h"
  37 #include "ocrdma_hw.h"
  38 #include "ocrdma_verbs.h"
  39 #include "ocrdma_ah.h"
  40
  41 enum mbx_status {
  42         OCRDMA_MBX_STATUS_FAILED                = 1,
  43         OCRDMA_MBX_STATUS_ILLEGAL_FIELD         = 3,
  44         OCRDMA_MBX_STATUS_OOR                   = 100,
  45         OCRDMA_MBX_STATUS_INVALID_PD            = 101,
  46         OCRDMA_MBX_STATUS_PD_INUSE              = 102,
  47         OCRDMA_MBX_STATUS_INVALID_CQ            = 103,
  48         OCRDMA_MBX_STATUS_INVALID_QP            = 104,
  49         OCRDMA_MBX_STATUS_INVALID_LKEY          = 105,
  50         OCRDMA_MBX_STATUS_ORD_EXCEEDS           = 106,
  51         OCRDMA_MBX_STATUS_IRD_EXCEEDS           = 107,
  52         OCRDMA_MBX_STATUS_SENDQ_WQE_EXCEEDS     = 108,
  53         OCRDMA_MBX_STATUS_RECVQ_RQE_EXCEEDS     = 109,
  54         OCRDMA_MBX_STATUS_SGE_SEND_EXCEEDS      = 110,
  55         OCRDMA_MBX_STATUS_SGE_WRITE_EXCEEDS     = 111,
  56         OCRDMA_MBX_STATUS_SGE_RECV_EXCEEDS      = 112,
  57         OCRDMA_MBX_STATUS_INVALID_STATE_CHANGE  = 113,
  58         OCRDMA_MBX_STATUS_MW_BOUND              = 114,
  59         OCRDMA_MBX_STATUS_INVALID_VA            = 115,
  60         OCRDMA_MBX_STATUS_INVALID_LENGTH        = 116,
  61         OCRDMA_MBX_STATUS_INVALID_FBO           = 117,
  62         OCRDMA_MBX_STATUS_INVALID_ACC_RIGHTS    = 118,
  63         OCRDMA_MBX_STATUS_INVALID_PBE_SIZE      = 119,
  64         OCRDMA_MBX_STATUS_INVALID_PBL_ENTRY     = 120,
  65         OCRDMA_MBX_STATUS_INVALID_PBL_SHIFT     = 121,
  66         OCRDMA_MBX_STATUS_INVALID_SRQ_ID        = 129,
  67         OCRDMA_MBX_STATUS_SRQ_ERROR             = 133,
  68         OCRDMA_MBX_STATUS_RQE_EXCEEDS           = 134,
  69         OCRDMA_MBX_STATUS_MTU_EXCEEDS           = 135,
  70         OCRDMA_MBX_STATUS_MAX_QP_EXCEEDS        = 136,
  71         OCRDMA_MBX_STATUS_SRQ_LIMIT_EXCEEDS     = 137,
  72         OCRDMA_MBX_STATUS_SRQ_SIZE_UNDERUNS     = 138,
  73         OCRDMA_MBX_STATUS_QP_BOUND              = 130,
  74         OCRDMA_MBX_STATUS_INVALID_CHANGE        = 139,
  75         OCRDMA_MBX_STATUS_ATOMIC_OPS_UNSUP      = 140,
  76         OCRDMA_MBX_STATUS_INVALID_RNR_NAK_TIMER = 141,
  77         OCRDMA_MBX_STATUS_MW_STILL_BOUND        = 142,
  78         OCRDMA_MBX_STATUS_PKEY_INDEX_INVALID    = 143,
  79         OCRDMA_MBX_STATUS_PKEY_INDEX_EXCEEDS    = 144
  80 };
  81
  82 enum additional_status {
  83         OCRDMA_MBX_ADDI_STATUS_INSUFFICIENT_RESOURCES = 22
  84 };
  85
  86 enum cqe_status {
  87         OCRDMA_MBX_CQE_STATUS_INSUFFICIENT_PRIVILEDGES  = 1,
  88         OCRDMA_MBX_CQE_STATUS_INVALID_PARAMETER         = 2,
  89         OCRDMA_MBX_CQE_STATUS_INSUFFICIENT_RESOURCES    = 3,
  90         OCRDMA_MBX_CQE_STATUS_QUEUE_FLUSHING            = 4,
  91         OCRDMA_MBX_CQE_STATUS_DMA_FAILED                = 5
  92 };
  93
  94 static inline void *ocrdma_get_eqe(struct ocrdma_eq *eq)
  95 {
  96         return eq->q.va + (eq->q.tail * sizeof(struct ocrdma_eqe));
  97 }
  98
  99 static inline void ocrdma_eq_inc_tail(struct ocrdma_eq *eq)
 100 {
 101         eq->q.tail = (eq->q.tail + 1) & (OCRDMA_EQ_LEN - 1);
 102 }
 103
 104 static inline void *ocrdma_get_mcqe(struct ocrdma_dev *dev)
 105 {
 106         struct ocrdma_mcqe *cqe = (struct ocrdma_mcqe *)
 107             (dev->mq.cq.va + (dev->mq.cq.tail * sizeof(struct ocrdma_mcqe)));
 108
 109         if (!(le32_to_cpu(cqe->valid_ae_cmpl_cons) & OCRDMA_MCQE_VALID_MASK))
 110                 return NULL;
 111         return cqe;
 112 }
 113
 114 static inline void ocrdma_mcq_inc_tail(struct ocrdma_dev *dev)
 115 {
 116         dev->mq.cq.tail = (dev->mq.cq.tail + 1) & (OCRDMA_MQ_CQ_LEN - 1);
 117 }
 118
 119 static inline struct ocrdma_mqe *ocrdma_get_mqe(struct ocrdma_dev *dev)
 120 {
 121         return dev->mq.sq.va + (dev->mq.sq.head * sizeof(struct ocrdma_mqe));
 122 }
 123
 124 static inline void ocrdma_mq_inc_head(struct ocrdma_dev *dev)
 125 {
 126         dev->mq.sq.head = (dev->mq.sq.head + 1) & (OCRDMA_MQ_LEN - 1);
 127 }
 128
 129 static inline void *ocrdma_get_mqe_rsp(struct ocrdma_dev *dev)
 130 {
 131         return dev->mq.sq.va + (dev->mqe_ctx.tag * sizeof(struct ocrdma_mqe));
 132 }
 133
 134 enum ib_qp_state get_ibqp_state(enum ocrdma_qp_state qps)
 135 {
 136         switch (qps) {
 137         case OCRDMA_QPS_RST:
 138                 return IB_QPS_RESET;
 139         case OCRDMA_QPS_INIT:
 140                 return IB_QPS_INIT;
 141         case OCRDMA_QPS_RTR:
 142                 return IB_QPS_RTR;
 143         case OCRDMA_QPS_RTS:
 144                 return IB_QPS_RTS;
 145         case OCRDMA_QPS_SQD:
 146         case OCRDMA_QPS_SQ_DRAINING:
 147                 return IB_QPS_SQD;
 148         case OCRDMA_QPS_SQE:
 149                 return IB_QPS_SQE;
 150         case OCRDMA_QPS_ERR:
 151                 return IB_QPS_ERR;
 152         }
 153         return IB_QPS_ERR;
 154 }
 155
 156 static enum ocrdma_qp_state get_ocrdma_qp_state(enum ib_qp_state qps)
 157 {
 158         switch (qps) {
 159         case IB_QPS_RESET:
 160                 return OCRDMA_QPS_RST;
 161         case IB_QPS_INIT:
 162                 return OCRDMA_QPS_INIT;
 163         case IB_QPS_RTR:
 164                 return OCRDMA_QPS_RTR;
 165         case IB_QPS_RTS:
 166                 return OCRDMA_QPS_RTS;
 167         case IB_QPS_SQD:
 168                 return OCRDMA_QPS_SQD;
 169         case IB_QPS_SQE:
 170                 return OCRDMA_QPS_SQE;
 171         case IB_QPS_ERR:
 172                 return OCRDMA_QPS_ERR;
 173         }
 174         return OCRDMA_QPS_ERR;
 175 }
 176
 177 static int ocrdma_get_mbx_errno(u32 status)
 178 {
 179         int err_num;
 180         u8 mbox_status = (status & OCRDMA_MBX_RSP_STATUS_MASK) >>
 181                                         OCRDMA_MBX_RSP_STATUS_SHIFT;
 182         u8 add_status = (status & OCRDMA_MBX_RSP_ASTATUS_MASK) >>
 183                                         OCRDMA_MBX_RSP_ASTATUS_SHIFT;
 184
 185         switch (mbox_status) {
 186         case OCRDMA_MBX_STATUS_OOR:
 187         case OCRDMA_MBX_STATUS_MAX_QP_EXCEEDS:
 188                 err_num = -EAGAIN;
 189                 break;
 190
 191         case OCRDMA_MBX_STATUS_INVALID_PD:
 192         case OCRDMA_MBX_STATUS_INVALID_CQ:
 193         case OCRDMA_MBX_STATUS_INVALID_SRQ_ID:
 194         case OCRDMA_MBX_STATUS_INVALID_QP:
 195         case OCRDMA_MBX_STATUS_INVALID_CHANGE:
 196         case OCRDMA_MBX_STATUS_MTU_EXCEEDS:
 197         case OCRDMA_MBX_STATUS_INVALID_RNR_NAK_TIMER:
 198         case OCRDMA_MBX_STATUS_PKEY_INDEX_INVALID:
 199         case OCRDMA_MBX_STATUS_PKEY_INDEX_EXCEEDS:
 200         case OCRDMA_MBX_STATUS_ILLEGAL_FIELD:
 201         case OCRDMA_MBX_STATUS_INVALID_PBL_ENTRY:
 202         case OCRDMA_MBX_STATUS_INVALID_LKEY:
 203         case OCRDMA_MBX_STATUS_INVALID_VA:
 204         case OCRDMA_MBX_STATUS_INVALID_LENGTH:
 205         case OCRDMA_MBX_STATUS_INVALID_FBO:
 206         case OCRDMA_MBX_STATUS_INVALID_ACC_RIGHTS:
 207         case OCRDMA_MBX_STATUS_INVALID_PBE_SIZE:
 208         case OCRDMA_MBX_STATUS_ATOMIC_OPS_UNSUP:
 209         case OCRDMA_MBX_STATUS_SRQ_ERROR:
 210         case OCRDMA_MBX_STATUS_SRQ_SIZE_UNDERUNS:
 211                 err_num = -EINVAL;
 212                 break;
 213
 214         case OCRDMA_MBX_STATUS_PD_INUSE:
 215         case OCRDMA_MBX_STATUS_QP_BOUND:
 216         case OCRDMA_MBX_STATUS_MW_STILL_BOUND:
 217         case OCRDMA_MBX_STATUS_MW_BOUND:
 218                 err_num = -EBUSY;
 219                 break;
 220
 221         case OCRDMA_MBX_STATUS_RECVQ_RQE_EXCEEDS:
 222         case OCRDMA_MBX_STATUS_SGE_RECV_EXCEEDS:
 223         case OCRDMA_MBX_STATUS_RQE_EXCEEDS:
 224         case OCRDMA_MBX_STATUS_SRQ_LIMIT_EXCEEDS:
 225         case OCRDMA_MBX_STATUS_ORD_EXCEEDS:
 226         case OCRDMA_MBX_STATUS_IRD_EXCEEDS:
 227         case OCRDMA_MBX_STATUS_SENDQ_WQE_EXCEEDS:
 228         case OCRDMA_MBX_STATUS_SGE_SEND_EXCEEDS:
 229         case OCRDMA_MBX_STATUS_SGE_WRITE_EXCEEDS:
 230                 err_num = -ENOBUFS;
 231                 break;
 232
 233         case OCRDMA_MBX_STATUS_FAILED:
 234                 switch (add_status) {
 235                 case OCRDMA_MBX_ADDI_STATUS_INSUFFICIENT_RESOURCES:
 236                         err_num = -EAGAIN;
 237                         break;
 238                 }
 239         default:
 240                 err_num = -EFAULT;
 241         }
 242         return err_num;
 243 }
 244
 245 char *port_speed_string(struct ocrdma_dev *dev)
 246 {
 247         char *str = "";
 248         u16 speeds_supported;
 249
 250         speeds_supported = dev->phy.fixed_speeds_supported |
 251                                 dev->phy.auto_speeds_supported;
 252         if (speeds_supported & OCRDMA_PHY_SPEED_40GBPS)
 253                 str = "40Gbps ";
 254         else if (speeds_supported & OCRDMA_PHY_SPEED_10GBPS)
 255                 str = "10Gbps ";
 256         else if (speeds_supported & OCRDMA_PHY_SPEED_1GBPS)
 257                 str = "1Gbps ";
 258
 259         return str;
 260 }
 261
 262 static int ocrdma_get_mbx_cqe_errno(u16 cqe_status)
 263 {
 264         int err_num = -EINVAL;
 265
 266         switch (cqe_status) {
 267         case OCRDMA_MBX_CQE_STATUS_INSUFFICIENT_PRIVILEDGES:
 268                 err_num = -EPERM;
 269                 break;
 270         case OCRDMA_MBX_CQE_STATUS_INVALID_PARAMETER:
 271                 err_num = -EINVAL;
 272                 break;
 273         case OCRDMA_MBX_CQE_STATUS_INSUFFICIENT_RESOURCES:
 274         case OCRDMA_MBX_CQE_STATUS_QUEUE_FLUSHING:
 275                 err_num = -EINVAL;
 276                 break;
 277         case OCRDMA_MBX_CQE_STATUS_DMA_FAILED:
 278         default:
 279                 err_num = -EINVAL;
 280                 break;
 281         }
 282         return err_num;
 283 }
 284
 285 void ocrdma_ring_cq_db(struct ocrdma_dev *dev, u16 cq_id, bool armed,
 286                        bool solicited, u16 cqe_popped)
 287 {
 288         u32 val = cq_id & OCRDMA_DB_CQ_RING_ID_MASK;
 289
 290         val |= ((cq_id & OCRDMA_DB_CQ_RING_ID_EXT_MASK) <<
 291              OCRDMA_DB_CQ_RING_ID_EXT_MASK_SHIFT);
 292
 293         if (armed)
 294                 val |= (1 << OCRDMA_DB_CQ_REARM_SHIFT);
 295         if (solicited)
 296                 val |= (1 << OCRDMA_DB_CQ_SOLICIT_SHIFT);
 297         val |= (cqe_popped << OCRDMA_DB_CQ_NUM_POPPED_SHIFT);
 298         iowrite32(val, dev->nic_info.db + OCRDMA_DB_CQ_OFFSET);
 299 }
 300
 301 static void ocrdma_ring_mq_db(struct ocrdma_dev *dev)
 302 {
 303         u32 val = 0;
 304
 305         val |= dev->mq.sq.id & OCRDMA_MQ_ID_MASK;
 306         val |= 1 << OCRDMA_MQ_NUM_MQE_SHIFT;
 307         iowrite32(val, dev->nic_info.db + OCRDMA_DB_MQ_OFFSET);
 308 }
 309
 310 static void ocrdma_ring_eq_db(struct ocrdma_dev *dev, u16 eq_id,
 311                               bool arm, bool clear_int, u16 num_eqe)
 312 {
 313         u32 val = 0;
 314
 315         val |= eq_id & OCRDMA_EQ_ID_MASK;
 316         val |= ((eq_id & OCRDMA_EQ_ID_EXT_MASK) << OCRDMA_EQ_ID_EXT_MASK_SHIFT);
 317         if (arm)
 318                 val |= (1 << OCRDMA_REARM_SHIFT);
 319         if (clear_int)
 320                 val |= (1 << OCRDMA_EQ_CLR_SHIFT);
 321         val |= (1 << OCRDMA_EQ_TYPE_SHIFT);
 322         val |= (num_eqe << OCRDMA_NUM_EQE_SHIFT);
 323         iowrite32(val, dev->nic_info.db + OCRDMA_DB_EQ_OFFSET);
 324 }
 325
 326 static void ocrdma_init_mch(struct ocrdma_mbx_hdr *cmd_hdr,
 327                             u8 opcode, u8 subsys, u32 cmd_len)
 328 {
 329         cmd_hdr->subsys_op = (opcode | (subsys << OCRDMA_MCH_SUBSYS_SHIFT));
 330         cmd_hdr->timeout = 20; /* seconds */
 331         cmd_hdr->cmd_len = cmd_len - sizeof(struct ocrdma_mbx_hdr);
 332 }
 333
 334 static void *ocrdma_init_emb_mqe(u8 opcode, u32 cmd_len)
 335 {
 336         struct ocrdma_mqe *mqe;
 337
 338         mqe = kzalloc(sizeof(struct ocrdma_mqe), GFP_KERNEL);
 339         if (!mqe)
 340                 return NULL;
 341         mqe->hdr.spcl_sge_cnt_emb |=
 342                 (OCRDMA_MQE_EMBEDDED << OCRDMA_MQE_HDR_EMB_SHIFT) &
 343                                         OCRDMA_MQE_HDR_EMB_MASK;
 344         mqe->hdr.pyld_len = cmd_len - sizeof(struct ocrdma_mqe_hdr);
 345
 346         ocrdma_init_mch(&mqe->u.emb_req.mch, opcode, OCRDMA_SUBSYS_ROCE,
 347                         mqe->hdr.pyld_len);
 348         return mqe;
 349 }
 350
 351 static void ocrdma_free_q(struct ocrdma_dev *dev, struct ocrdma_queue_info *q)
 352 {
 353         dma_free_coherent(&dev->nic_info.pdev->dev, q->size, q->va, q->dma);
 354 }
 355
 356 static int ocrdma_alloc_q(struct ocrdma_dev *dev,
 357                           struct ocrdma_queue_info *q, u16 len, u16 entry_size)
 358 {
 359         memset(q, 0, sizeof(*q));
 360         q->len = len;
 361         q->entry_size = entry_size;
 362         q->size = len * entry_size;
 363         q->va = dma_alloc_coherent(&dev->nic_info.pdev->dev, q->size,
 364                                    &q->dma, GFP_KERNEL);
 365         if (!q->va)
 366                 return -ENOMEM;
 367         memset(q->va, 0, q->size);
 368         return 0;
 369 }
 370
 371 static void ocrdma_build_q_pages(struct ocrdma_pa *q_pa, int cnt,
 372                                         dma_addr_t host_pa, int hw_page_size)
 373 {
 374         int i;
 375
 376         for (i = 0; i < cnt; i++) {
 377                 q_pa[i].lo = (u32) (host_pa & 0xffffffff);
 378                 q_pa[i].hi = (u32) upper_32_bits(host_pa);
 379                 host_pa += hw_page_size;
 380         }
 381 }
 382
 383 static int ocrdma_mbx_delete_q(struct ocrdma_dev *dev,
 384                                struct ocrdma_queue_info *q, int queue_type)
 385 {
 386         u8 opcode = 0;
 387         int status;
 388         struct ocrdma_delete_q_req *cmd = dev->mbx_cmd;
 389
 390         switch (queue_type) {
 391         case QTYPE_MCCQ:
 392                 opcode = OCRDMA_CMD_DELETE_MQ;
 393                 break;
 394         case QTYPE_CQ:
 395                 opcode = OCRDMA_CMD_DELETE_CQ;
 396                 break;
 397         case QTYPE_EQ:
 398                 opcode = OCRDMA_CMD_DELETE_EQ;
 399                 break;
 400         default:
 401                 BUG();
 402         }
 403         memset(cmd, 0, sizeof(*cmd));
 404         ocrdma_init_mch(&cmd->req, opcode, OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
 405         cmd->id = q->id;
 406
 407         status = be_roce_mcc_cmd(dev->nic_info.netdev,
 408                                  cmd, sizeof(*cmd), NULL, NULL);
 409         if (!status)
 410                 q->created = false;
 411         return status;
 412 }
 413
 414 static int ocrdma_mbx_create_eq(struct ocrdma_dev *dev, struct ocrdma_eq *eq)
 415 {
 416         int status;
 417         struct ocrdma_create_eq_req *cmd = dev->mbx_cmd;
 418         struct ocrdma_create_eq_rsp *rsp = dev->mbx_cmd;
 419
 420         memset(cmd, 0, sizeof(*cmd));
 421         ocrdma_init_mch(&cmd->req, OCRDMA_CMD_CREATE_EQ, OCRDMA_SUBSYS_COMMON,
 422                         sizeof(*cmd));
 423
 424         cmd->req.rsvd_version = 2;
 425         cmd->num_pages = 4;
 426         cmd->valid = OCRDMA_CREATE_EQ_VALID;
 427         cmd->cnt = 4 << OCRDMA_CREATE_EQ_CNT_SHIFT;
 428
 429         ocrdma_build_q_pages(&cmd->pa[0], cmd->num_pages, eq->q.dma,
 430                              PAGE_SIZE_4K);
 431         status = be_roce_mcc_cmd(dev->nic_info.netdev, cmd, sizeof(*cmd), NULL,
 432                                  NULL);
 433         if (!status) {
 434                 eq->q.id = rsp->vector_eqid & 0xffff;
 435                 eq->vector = (rsp->vector_eqid >> 16) & 0xffff;
 436                 eq->q.created = true;
 437         }
 438         return status;
 439 }
 440
 441 static int ocrdma_create_eq(struct ocrdma_dev *dev,
 442                             struct ocrdma_eq *eq, u16 q_len)
 443 {
 444         int status;
 445
 446         status = ocrdma_alloc_q(dev, &eq->q, OCRDMA_EQ_LEN,
 447                                 sizeof(struct ocrdma_eqe));
 448         if (status)
 449                 return status;
 450
 451         status = ocrdma_mbx_create_eq(dev, eq);
 452         if (status)
 453                 goto mbx_err;
 454         eq->dev = dev;
 455         ocrdma_ring_eq_db(dev, eq->q.id, true, true, 0);
 456
 457         return 0;
 458 mbx_err:
 459         ocrdma_free_q(dev, &eq->q);
 460         return status;
 461 }
 462
 463 int ocrdma_get_irq(struct ocrdma_dev *dev, struct ocrdma_eq *eq)
 464 {
 465         int irq;
 466
 467         if (dev->nic_info.intr_mode == BE_INTERRUPT_MODE_INTX)
 468                 irq = dev->nic_info.pdev->irq;
 469         else
 470                 irq = dev->nic_info.msix.vector_list[eq->vector];
 471         return irq;
 472 }
 473
 474 static void _ocrdma_destroy_eq(struct ocrdma_dev *dev, struct ocrdma_eq *eq)
 475 {
 476         if (eq->q.created) {
 477                 ocrdma_mbx_delete_q(dev, &eq->q, QTYPE_EQ);
 478                 ocrdma_free_q(dev, &eq->q);
 479         }
 480 }
 481
 482 static void ocrdma_destroy_eq(struct ocrdma_dev *dev, struct ocrdma_eq *eq)
 483 {
 484         int irq;
 485
 486         /* disarm EQ so that interrupts are not generated
 487          * during freeing and EQ delete is in progress.
 488          */
 489         ocrdma_ring_eq_db(dev, eq->q.id, false, false, 0);
 490
 491         irq = ocrdma_get_irq(dev, eq);
 492         free_irq(irq, eq);
 493         _ocrdma_destroy_eq(dev, eq);
 494 }
 495
 496 static void ocrdma_destroy_eqs(struct ocrdma_dev *dev)
 497 {
 498         int i;
 499
 500         for (i = 0; i < dev->eq_cnt; i++)
 501                 ocrdma_destroy_eq(dev, &dev->eq_tbl[i]);
 502 }
 503
 504 static int ocrdma_mbx_mq_cq_create(struct ocrdma_dev *dev,
 505                                    struct ocrdma_queue_info *cq,
 506                                    struct ocrdma_queue_info *eq)
 507 {
 508         struct ocrdma_create_cq_cmd *cmd = dev->mbx_cmd;
 509         struct ocrdma_create_cq_cmd_rsp *rsp = dev->mbx_cmd;
 510         int status;
 511
 512         memset(cmd, 0, sizeof(*cmd));
 513         ocrdma_init_mch(&cmd->req, OCRDMA_CMD_CREATE_CQ,
 514                         OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
 515
 516         cmd->req.rsvd_version = OCRDMA_CREATE_CQ_VER2;
 517         cmd->pgsz_pgcnt = (cq->size / OCRDMA_MIN_Q_PAGE_SIZE) <<
 518                 OCRDMA_CREATE_CQ_PAGE_SIZE_SHIFT;
 519         cmd->pgsz_pgcnt |= PAGES_4K_SPANNED(cq->va, cq->size);
 520
 521         cmd->ev_cnt_flags = OCRDMA_CREATE_CQ_DEF_FLAGS;
 522         cmd->eqn = eq->id;
 523         cmd->pdid_cqecnt = cq->size / sizeof(struct ocrdma_mcqe);
 524
 525         ocrdma_build_q_pages(&cmd->pa[0], cq->size / OCRDMA_MIN_Q_PAGE_SIZE,
 526                              cq->dma, PAGE_SIZE_4K);
 527         status = be_roce_mcc_cmd(dev->nic_info.netdev,
 528                                  cmd, sizeof(*cmd), NULL, NULL);
 529         if (!status) {
 530                 cq->id = (u16) (rsp->cq_id & OCRDMA_CREATE_CQ_RSP_CQ_ID_MASK);
 531                 cq->created = true;
 532         }
 533         return status;
 534 }
 535
 536 static u32 ocrdma_encoded_q_len(int q_len)
 537 {
 538         u32 len_encoded = fls(q_len);   /* log2(len) + 1 */
 539
 540         if (len_encoded == 16)
 541                 len_encoded = 0;
 542         return len_encoded;
 543 }
 544
 545 static int ocrdma_mbx_create_mq(struct ocrdma_dev *dev,
 546                                 struct ocrdma_queue_info *mq,
 547                                 struct ocrdma_queue_info *cq)
 548 {
 549         int num_pages, status;
 550         struct ocrdma_create_mq_req *cmd = dev->mbx_cmd;
 551         struct ocrdma_create_mq_rsp *rsp = dev->mbx_cmd;
 552         struct ocrdma_pa *pa;
 553
 554         memset(cmd, 0, sizeof(*cmd));
 555         num_pages = PAGES_4K_SPANNED(mq->va, mq->size);
 556
 557         ocrdma_init_mch(&cmd->req, OCRDMA_CMD_CREATE_MQ_EXT,
 558                         OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
 559         cmd->req.rsvd_version = 1;
 560         cmd->cqid_pages = num_pages;
 561         cmd->cqid_pages |= (cq->id << OCRDMA_CREATE_MQ_CQ_ID_SHIFT);
 562         cmd->async_cqid_valid = OCRDMA_CREATE_MQ_ASYNC_CQ_VALID;
 563
 564         cmd->async_event_bitmap = BIT(OCRDMA_ASYNC_GRP5_EVE_CODE);
 565         cmd->async_event_bitmap |= BIT(OCRDMA_ASYNC_RDMA_EVE_CODE);
 566
 567         cmd->async_cqid_ringsize = cq->id;
 568         cmd->async_cqid_ringsize |= (ocrdma_encoded_q_len(mq->len) <<
 569                                 OCRDMA_CREATE_MQ_RING_SIZE_SHIFT);
 570         cmd->valid = OCRDMA_CREATE_MQ_VALID;
 571         pa = &cmd->pa[0];
 572
 573         ocrdma_build_q_pages(pa, num_pages, mq->dma, PAGE_SIZE_4K);
 574         status = be_roce_mcc_cmd(dev->nic_info.netdev,
 575                                  cmd, sizeof(*cmd), NULL, NULL);
 576         if (!status) {
 577                 mq->id = rsp->id;
 578                 mq->created = true;
 579         }
 580         return status;
 581 }
 582
 583 static int ocrdma_create_mq(struct ocrdma_dev *dev)
 584 {
 585         int status;
 586
 587         /* Alloc completion queue for Mailbox queue */
 588         status = ocrdma_alloc_q(dev, &dev->mq.cq, OCRDMA_MQ_CQ_LEN,
 589                                 sizeof(struct ocrdma_mcqe));
 590         if (status)
 591                 goto alloc_err;
 592
 593         dev->eq_tbl[0].cq_cnt++;
 594         status = ocrdma_mbx_mq_cq_create(dev, &dev->mq.cq, &dev->eq_tbl[0].q);
 595         if (status)
 596                 goto mbx_cq_free;
 597
 598         memset(&dev->mqe_ctx, 0, sizeof(dev->mqe_ctx));
 599         init_waitqueue_head(&dev->mqe_ctx.cmd_wait);
 600         mutex_init(&dev->mqe_ctx.lock);
 601
 602         /* Alloc Mailbox queue */
 603         status = ocrdma_alloc_q(dev, &dev->mq.sq, OCRDMA_MQ_LEN,
 604                                 sizeof(struct ocrdma_mqe));
 605         if (status)
 606                 goto mbx_cq_destroy;
 607         status = ocrdma_mbx_create_mq(dev, &dev->mq.sq, &dev->mq.cq);
 608         if (status)
 609                 goto mbx_q_free;
 610         ocrdma_ring_cq_db(dev, dev->mq.cq.id, true, false, 0);
 611         return 0;
 612
 613 mbx_q_free:
 614         ocrdma_free_q(dev, &dev->mq.sq);
 615 mbx_cq_destroy:
 616         ocrdma_mbx_delete_q(dev, &dev->mq.cq, QTYPE_CQ);
 617 mbx_cq_free:
 618         ocrdma_free_q(dev, &dev->mq.cq);
 619 alloc_err:
 620         return status;
 621 }
 622
 623 static void ocrdma_destroy_mq(struct ocrdma_dev *dev)
 624 {
 625         struct ocrdma_queue_info *mbxq, *cq;
 626
 627         /* mqe_ctx lock synchronizes with any other pending cmds. */
 628         mutex_lock(&dev->mqe_ctx.lock);
 629         mbxq = &dev->mq.sq;
 630         if (mbxq->created) {
 631                 ocrdma_mbx_delete_q(dev, mbxq, QTYPE_MCCQ);
 632                 ocrdma_free_q(dev, mbxq);
 633         }
 634         mutex_unlock(&dev->mqe_ctx.lock);
 635
 636         cq = &dev->mq.cq;
 637         if (cq->created) {
 638                 ocrdma_mbx_delete_q(dev, cq, QTYPE_CQ);
 639                 ocrdma_free_q(dev, cq);
 640         }
 641 }
 642
 643 static void ocrdma_process_qpcat_error(struct ocrdma_dev *dev,
 644                                        struct ocrdma_qp *qp)
 645 {
 646         enum ib_qp_state new_ib_qps = IB_QPS_ERR;
 647         enum ib_qp_state old_ib_qps;
 648
 649         if (qp == NULL)
 650                 BUG();
 651         ocrdma_qp_state_change(qp, new_ib_qps, &old_ib_qps);
 652 }
 653
 654 static void ocrdma_dispatch_ibevent(struct ocrdma_dev *dev,
 655                                     struct ocrdma_ae_mcqe *cqe)
 656 {
 657         struct ocrdma_qp *qp = NULL;
 658         struct ocrdma_cq *cq = NULL;
 659         struct ib_event ib_evt;
 660         int cq_event = 0;
 661         int qp_event = 1;
 662         int srq_event = 0;
 663         int dev_event = 0;
 664         int type = (cqe->valid_ae_event & OCRDMA_AE_MCQE_EVENT_TYPE_MASK) >>
 665             OCRDMA_AE_MCQE_EVENT_TYPE_SHIFT;
 666
 667         if (cqe->qpvalid_qpid & OCRDMA_AE_MCQE_QPVALID)
 668                 qp = dev->qp_tbl[cqe->qpvalid_qpid & OCRDMA_AE_MCQE_QPID_MASK];
 669         if (cqe->cqvalid_cqid & OCRDMA_AE_MCQE_CQVALID)
 670                 cq = dev->cq_tbl[cqe->cqvalid_cqid & OCRDMA_AE_MCQE_CQID_MASK];
 671
 672         memset(&ib_evt, 0, sizeof(ib_evt));
 673
 674         ib_evt.device = &dev->ibdev;
 675
 676         switch (type) {
 677         case OCRDMA_CQ_ERROR:
 678                 ib_evt.element.cq = &cq->ibcq;
 679                 ib_evt.event = IB_EVENT_CQ_ERR;
 680                 cq_event = 1;
 681                 qp_event = 0;
 682                 break;
 683         case OCRDMA_CQ_OVERRUN_ERROR:
 684                 ib_evt.element.cq = &cq->ibcq;
 685                 ib_evt.event = IB_EVENT_CQ_ERR;
 686                 cq_event = 1;
 687                 qp_event = 0;
 688                 break;
 689         case OCRDMA_CQ_QPCAT_ERROR:
 690                 ib_evt.element.qp = &qp->ibqp;
 691                 ib_evt.event = IB_EVENT_QP_FATAL;
 692                 ocrdma_process_qpcat_error(dev, qp);
 693                 break;
 694         case OCRDMA_QP_ACCESS_ERROR:
 695                 ib_evt.element.qp = &qp->ibqp;
 696                 ib_evt.event = IB_EVENT_QP_ACCESS_ERR;
 697                 break;
 698         case OCRDMA_QP_COMM_EST_EVENT:
 699                 ib_evt.element.qp = &qp->ibqp;
 700                 ib_evt.event = IB_EVENT_COMM_EST;
 701                 break;
 702         case OCRDMA_SQ_DRAINED_EVENT:
 703                 ib_evt.element.qp = &qp->ibqp;
 704                 ib_evt.event = IB_EVENT_SQ_DRAINED;
 705                 break;
 706         case OCRDMA_DEVICE_FATAL_EVENT:
 707                 ib_evt.element.port_num = 1;
 708                 ib_evt.event = IB_EVENT_DEVICE_FATAL;
 709                 qp_event = 0;
 710                 dev_event = 1;
 711                 break;
 712         case OCRDMA_SRQCAT_ERROR:
 713                 ib_evt.element.srq = &qp->srq->ibsrq;
 714                 ib_evt.event = IB_EVENT_SRQ_ERR;
 715                 srq_event = 1;
 716                 qp_event = 0;
 717                 break;
 718         case OCRDMA_SRQ_LIMIT_EVENT:
 719                 ib_evt.element.srq = &qp->srq->ibsrq;
 720                 ib_evt.event = IB_EVENT_SRQ_LIMIT_REACHED;
 721                 srq_event = 1;
 722                 qp_event = 0;
 723                 break;
 724         case OCRDMA_QP_LAST_WQE_EVENT:
 725                 ib_evt.element.qp = &qp->ibqp;
 726                 ib_evt.event = IB_EVENT_QP_LAST_WQE_REACHED;
 727                 break;
 728         default:
 729                 cq_event = 0;
 730                 qp_event = 0;
 731                 srq_event = 0;
 732                 dev_event = 0;
 733                 pr_err("%s() unknown type=0x%x\n", __func__, type);
 734                 break;
 735         }
 736
 737         if (type < OCRDMA_MAX_ASYNC_ERRORS)
 738                 atomic_inc(&dev->async_err_stats[type]);
 739
 740         if (qp_event) {
 741                 if (qp->ibqp.event_handler)
 742                         qp->ibqp.event_handler(&ib_evt, qp->ibqp.qp_context);
 743         } else if (cq_event) {
 744                 if (cq->ibcq.event_handler)
 745                         cq->ibcq.event_handler(&ib_evt, cq->ibcq.cq_context);
 746         } else if (srq_event) {
 747                 if (qp->srq->ibsrq.event_handler)
 748                         qp->srq->ibsrq.event_handler(&ib_evt,
 749                                                      qp->srq->ibsrq.
 750                                                      srq_context);
 751         } else if (dev_event) {
 752                 pr_err("%s: Fatal event received\n", dev->ibdev.name);
 753                 ib_dispatch_event(&ib_evt);
 754         }
 755
 756 }
 757
 758 static void ocrdma_process_grp5_aync(struct ocrdma_dev *dev,
 759                                         struct ocrdma_ae_mcqe *cqe)
 760 {
 761         struct ocrdma_ae_pvid_mcqe *evt;
 762         int type = (cqe->valid_ae_event & OCRDMA_AE_MCQE_EVENT_TYPE_MASK) >>
 763                         OCRDMA_AE_MCQE_EVENT_TYPE_SHIFT;
 764
 765         switch (type) {
 766         case OCRDMA_ASYNC_EVENT_PVID_STATE:
 767                 evt = (struct ocrdma_ae_pvid_mcqe *)cqe;
 768                 if ((evt->tag_enabled & OCRDMA_AE_PVID_MCQE_ENABLED_MASK) >>
 769                         OCRDMA_AE_PVID_MCQE_ENABLED_SHIFT)
 770                         dev->pvid = ((evt->tag_enabled &
 771                                         OCRDMA_AE_PVID_MCQE_TAG_MASK) >>
 772                                         OCRDMA_AE_PVID_MCQE_TAG_SHIFT);
 773                 break;
 774
 775         case OCRDMA_ASYNC_EVENT_COS_VALUE:
 776                 atomic_set(&dev->update_sl, 1);
 777                 break;
 778         default:
 779                 /* Not interested evts. */
 780                 break;
 781         }
 782 }
 783
 784 static void ocrdma_process_acqe(struct ocrdma_dev *dev, void *ae_cqe)
 785 {
 786         /* async CQE processing */
 787         struct ocrdma_ae_mcqe *cqe = ae_cqe;
 788         u32 evt_code = (cqe->valid_ae_event & OCRDMA_AE_MCQE_EVENT_CODE_MASK) >>
 789                         OCRDMA_AE_MCQE_EVENT_CODE_SHIFT;
 790
 791         if (evt_code == OCRDMA_ASYNC_RDMA_EVE_CODE)
 792                 ocrdma_dispatch_ibevent(dev, cqe);
 793         else if (evt_code == OCRDMA_ASYNC_GRP5_EVE_CODE)
 794                 ocrdma_process_grp5_aync(dev, cqe);
 795         else
 796                 pr_err("%s(%d) invalid evt code=0x%x\n", __func__,
 797                        dev->id, evt_code);
 798 }
 799
 800 static void ocrdma_process_mcqe(struct ocrdma_dev *dev, struct ocrdma_mcqe *cqe)
 801 {
 802         if (dev->mqe_ctx.tag == cqe->tag_lo && dev->mqe_ctx.cmd_done == false) {
 803                 dev->mqe_ctx.cqe_status = (cqe->status &
 804                      OCRDMA_MCQE_STATUS_MASK) >> OCRDMA_MCQE_STATUS_SHIFT;
 805                 dev->mqe_ctx.ext_status =
 806                     (cqe->status & OCRDMA_MCQE_ESTATUS_MASK)
 807                     >> OCRDMA_MCQE_ESTATUS_SHIFT;
 808                 dev->mqe_ctx.cmd_done = true;
 809                 wake_up(&dev->mqe_ctx.cmd_wait);
 810         } else
 811                 pr_err("%s() cqe for invalid tag0x%x.expected=0x%x\n",
 812                        __func__, cqe->tag_lo, dev->mqe_ctx.tag);
 813 }
 814
 815 static int ocrdma_mq_cq_handler(struct ocrdma_dev *dev, u16 cq_id)
 816 {
 817         u16 cqe_popped = 0;
 818         struct ocrdma_mcqe *cqe;
 819
 820         while (1) {
 821                 cqe = ocrdma_get_mcqe(dev);
 822                 if (cqe == NULL)
 823                         break;
 824                 ocrdma_le32_to_cpu(cqe, sizeof(*cqe));
 825                 cqe_popped += 1;
 826                 if (cqe->valid_ae_cmpl_cons & OCRDMA_MCQE_AE_MASK)
 827                         ocrdma_process_acqe(dev, cqe);
 828                 else if (cqe->valid_ae_cmpl_cons & OCRDMA_MCQE_CMPL_MASK)
 829                         ocrdma_process_mcqe(dev, cqe);
 830                 memset(cqe, 0, sizeof(struct ocrdma_mcqe));
 831                 ocrdma_mcq_inc_tail(dev);
 832         }
 833         ocrdma_ring_cq_db(dev, dev->mq.cq.id, true, false, cqe_popped);
 834         return 0;
 835 }
 836
 837 static struct ocrdma_cq *_ocrdma_qp_buddy_cq_handler(struct ocrdma_dev *dev,
 838                                 struct ocrdma_cq *cq, bool sq)
 839 {
 840         struct ocrdma_qp *qp;
 841         struct list_head *cur;
 842         struct ocrdma_cq *bcq = NULL;
 843         struct list_head *head = sq?(&cq->sq_head):(&cq->rq_head);
 844
 845         list_for_each(cur, head) {
 846                 if (sq)
 847                         qp = list_entry(cur, struct ocrdma_qp, sq_entry);
 848                 else
 849                         qp = list_entry(cur, struct ocrdma_qp, rq_entry);
 850
 851                 if (qp->srq)
 852                         continue;
 853                 /* if wq and rq share the same cq, than comp_handler
 854                  * is already invoked.
 855                  */
 856                 if (qp->sq_cq == qp->rq_cq)
 857                         continue;
 858                 /* if completion came on sq, rq's cq is buddy cq.
 859                  * if completion came on rq, sq's cq is buddy cq.
 860                  */
 861                 if (qp->sq_cq == cq)
 862                         bcq = qp->rq_cq;
 863                 else
 864                         bcq = qp->sq_cq;
 865                 return bcq;
 866         }
 867         return NULL;
 868 }
 869
 870 static void ocrdma_qp_buddy_cq_handler(struct ocrdma_dev *dev,
 871                                        struct ocrdma_cq *cq)
 872 {
 873         unsigned long flags;
 874         struct ocrdma_cq *bcq = NULL;
 875
 876         /* Go through list of QPs in error state which are using this CQ
 877          * and invoke its callback handler to trigger CQE processing for
 878          * error/flushed CQE. It is rare to find more than few entries in
 879          * this list as most consumers stops after getting error CQE.
 880          * List is traversed only once when a matching buddy cq found for a QP.
 881          */
 882         spin_lock_irqsave(&dev->flush_q_lock, flags);
 883         /* Check if buddy CQ is present.
 884          * true - Check for  SQ CQ
 885          * false - Check for RQ CQ
 886          */
 887         bcq = _ocrdma_qp_buddy_cq_handler(dev, cq, true);
 888         if (bcq == NULL)
 889                 bcq = _ocrdma_qp_buddy_cq_handler(dev, cq, false);
 890         spin_unlock_irqrestore(&dev->flush_q_lock, flags);
 891
 892         /* if there is valid buddy cq, look for its completion handler */
 893         if (bcq && bcq->ibcq.comp_handler) {
 894                 spin_lock_irqsave(&bcq->comp_handler_lock, flags);
 895                 (*bcq->ibcq.comp_handler) (&bcq->ibcq, bcq->ibcq.cq_context);
 896                 spin_unlock_irqrestore(&bcq->comp_handler_lock, flags);
 897         }
 898 }
 899
 900 static void ocrdma_qp_cq_handler(struct ocrdma_dev *dev, u16 cq_idx)
 901 {
 902         unsigned long flags;
 903         struct ocrdma_cq *cq;
 904
 905         if (cq_idx >= OCRDMA_MAX_CQ)
 906                 BUG();
 907
 908         cq = dev->cq_tbl[cq_idx];
 909         if (cq == NULL)
 910                 return;
 911
 912         if (cq->ibcq.comp_handler) {
 913                 spin_lock_irqsave(&cq->comp_handler_lock, flags);
 914                 (*cq->ibcq.comp_handler) (&cq->ibcq, cq->ibcq.cq_context);
 915                 spin_unlock_irqrestore(&cq->comp_handler_lock, flags);
 916         }
 917         ocrdma_qp_buddy_cq_handler(dev, cq);
 918 }
 919
 920 static void ocrdma_cq_handler(struct ocrdma_dev *dev, u16 cq_id)
 921 {
 922         /* process the MQ-CQE. */
 923         if (cq_id == dev->mq.cq.id)
 924                 ocrdma_mq_cq_handler(dev, cq_id);
 925         else
 926                 ocrdma_qp_cq_handler(dev, cq_id);
 927 }
 928
 929 static irqreturn_t ocrdma_irq_handler(int irq, void *handle)
 930 {
 931         struct ocrdma_eq *eq = handle;
 932         struct ocrdma_dev *dev = eq->dev;
 933         struct ocrdma_eqe eqe;
 934         struct ocrdma_eqe *ptr;
 935         u16 cq_id;
 936         u8 mcode;
 937         int budget = eq->cq_cnt;
 938
 939         do {
 940                 ptr = ocrdma_get_eqe(eq);
 941                 eqe = *ptr;
 942                 ocrdma_le32_to_cpu(&eqe, sizeof(eqe));
 943                 mcode = (eqe.id_valid & OCRDMA_EQE_MAJOR_CODE_MASK)
 944                                 >> OCRDMA_EQE_MAJOR_CODE_SHIFT;
 945                 if (mcode == OCRDMA_MAJOR_CODE_SENTINAL)
 946                         pr_err("EQ full on eqid = 0x%x, eqe = 0x%x\n",
 947                                eq->q.id, eqe.id_valid);
 948                 if ((eqe.id_valid & OCRDMA_EQE_VALID_MASK) == 0)
 949                         break;
 950
 951                 ptr->id_valid = 0;
 952                 /* ring eq doorbell as soon as its consumed. */
 953                 ocrdma_ring_eq_db(dev, eq->q.id, false, true, 1);
 954                 /* check whether its CQE or not. */
 955                 if ((eqe.id_valid & OCRDMA_EQE_FOR_CQE_MASK) == 0) {
 956                         cq_id = eqe.id_valid >> OCRDMA_EQE_RESOURCE_ID_SHIFT;
 957                         ocrdma_cq_handler(dev, cq_id);
 958                 }
 959                 ocrdma_eq_inc_tail(eq);
 960
 961                 /* There can be a stale EQE after the last bound CQ is
 962                  * destroyed. EQE valid and budget == 0 implies this.
 963                  */
 964                 if (budget)
 965                         budget--;
 966
 967         } while (budget);
 968
 969         eq->aic_obj.eq_intr_cnt++;
 970         ocrdma_ring_eq_db(dev, eq->q.id, true, true, 0);
 971         return IRQ_HANDLED;
 972 }
 973
 974 static void ocrdma_post_mqe(struct ocrdma_dev *dev, struct ocrdma_mqe *cmd)
 975 {
 976         struct ocrdma_mqe *mqe;
 977
 978         dev->mqe_ctx.tag = dev->mq.sq.head;
 979         dev->mqe_ctx.cmd_done = false;
 980         mqe = ocrdma_get_mqe(dev);
 981         cmd->hdr.tag_lo = dev->mq.sq.head;
 982         ocrdma_copy_cpu_to_le32(mqe, cmd, sizeof(*mqe));
 983         /* make sure descriptor is written before ringing doorbell */
 984         wmb();
 985         ocrdma_mq_inc_head(dev);
 986         ocrdma_ring_mq_db(dev);
 987 }
 988
 989 static int ocrdma_wait_mqe_cmpl(struct ocrdma_dev *dev)
 990 {
 991         long status;
 992         /* 30 sec timeout */
 993         status = wait_event_timeout(dev->mqe_ctx.cmd_wait,
 994                                     (dev->mqe_ctx.cmd_done != false),
 995                                     msecs_to_jiffies(30000));
 996         if (status)
 997                 return 0;
 998         else {
 999                 dev->mqe_ctx.fw_error_state = true;
1000                 pr_err("%s(%d) mailbox timeout: fw not responding\n",
1001                        __func__, dev->id);
1002                 return -1;
1003         }
1004 }
1005
1006 /* issue a mailbox command on the MQ */
1007 static int ocrdma_mbx_cmd(struct ocrdma_dev *dev, struct ocrdma_mqe *mqe)
1008 {
1009         int status = 0;
1010         u16 cqe_status, ext_status;
1011         struct ocrdma_mqe *rsp_mqe;
1012         struct ocrdma_mbx_rsp *rsp = NULL;
1013
1014         mutex_lock(&dev->mqe_ctx.lock);
1015         if (dev->mqe_ctx.fw_error_state)
1016                 goto mbx_err;
1017         ocrdma_post_mqe(dev, mqe);
1018         status = ocrdma_wait_mqe_cmpl(dev);
1019         if (status)
1020                 goto mbx_err;
1021         cqe_status = dev->mqe_ctx.cqe_status;
1022         ext_status = dev->mqe_ctx.ext_status;
1023         rsp_mqe = ocrdma_get_mqe_rsp(dev);
1024         ocrdma_copy_le32_to_cpu(mqe, rsp_mqe, (sizeof(*mqe)));
1025         if ((mqe->hdr.spcl_sge_cnt_emb & OCRDMA_MQE_HDR_EMB_MASK) >>
1026                                 OCRDMA_MQE_HDR_EMB_SHIFT)
1027                 rsp = &mqe->u.rsp;
1028
1029         if (cqe_status || ext_status) {
1030                 pr_err("%s() cqe_status=0x%x, ext_status=0x%x,",
1031                        __func__, cqe_status, ext_status);
1032                 if (rsp) {
1033                         /* This is for embedded cmds. */
1034                         pr_err("opcode=0x%x, subsystem=0x%x\n",
1035                                (rsp->subsys_op & OCRDMA_MBX_RSP_OPCODE_MASK) >>
1036                                 OCRDMA_MBX_RSP_OPCODE_SHIFT,
1037                                 (rsp->subsys_op & OCRDMA_MBX_RSP_SUBSYS_MASK) >>
1038                                 OCRDMA_MBX_RSP_SUBSYS_SHIFT);
1039                 }
1040                 status = ocrdma_get_mbx_cqe_errno(cqe_status);
1041                 goto mbx_err;
1042         }
1043         /* For non embedded, rsp errors are handled in ocrdma_nonemb_mbx_cmd */
1044         if (rsp && (mqe->u.rsp.status & OCRDMA_MBX_RSP_STATUS_MASK))
1045                 status = ocrdma_get_mbx_errno(mqe->u.rsp.status);
1046 mbx_err:
1047         mutex_unlock(&dev->mqe_ctx.lock);
1048         return status;
1049 }
1050
1051 static int ocrdma_nonemb_mbx_cmd(struct ocrdma_dev *dev, struct ocrdma_mqe *mqe,
1052                                  void *payload_va)
1053 {
1054         int status = 0;
1055         struct ocrdma_mbx_rsp *rsp = payload_va;
1056
1057         if ((mqe->hdr.spcl_sge_cnt_emb & OCRDMA_MQE_HDR_EMB_MASK) >>
1058                                 OCRDMA_MQE_HDR_EMB_SHIFT)
1059                 BUG();
1060
1061         status = ocrdma_mbx_cmd(dev, mqe);
1062         if (!status)
1063                 /* For non embedded, only CQE failures are handled in
1064                  * ocrdma_mbx_cmd. We need to check for RSP errors.
1065                  */
1066                 if (rsp->status & OCRDMA_MBX_RSP_STATUS_MASK)
1067                         status = ocrdma_get_mbx_errno(rsp->status);
1068
1069         if (status)
1070                 pr_err("opcode=0x%x, subsystem=0x%x\n",
1071                        (rsp->subsys_op & OCRDMA_MBX_RSP_OPCODE_MASK) >>
1072                         OCRDMA_MBX_RSP_OPCODE_SHIFT,
1073                         (rsp->subsys_op & OCRDMA_MBX_RSP_SUBSYS_MASK) >>
1074                         OCRDMA_MBX_RSP_SUBSYS_SHIFT);
1075         return status;
1076 }
1077
1078 static void ocrdma_get_attr(struct ocrdma_dev *dev,
1079                               struct ocrdma_dev_attr *attr,
1080                               struct ocrdma_mbx_query_config *rsp)
1081 {
1082         attr->max_pd =
1083             (rsp->max_pd_ca_ack_delay & OCRDMA_MBX_QUERY_CFG_MAX_PD_MASK) >>
1084             OCRDMA_MBX_QUERY_CFG_MAX_PD_SHIFT;
1085         attr->max_dpp_pds =
1086            (rsp->max_dpp_pds_credits & OCRDMA_MBX_QUERY_CFG_MAX_DPP_PDS_MASK) >>
1087             OCRDMA_MBX_QUERY_CFG_MAX_DPP_PDS_OFFSET;
1088         attr->max_qp =
1089             (rsp->qp_srq_cq_ird_ord & OCRDMA_MBX_QUERY_CFG_MAX_QP_MASK) >>
1090             OCRDMA_MBX_QUERY_CFG_MAX_QP_SHIFT;
1091         attr->max_srq =
1092                 (rsp->max_srq_rpir_qps & OCRDMA_MBX_QUERY_CFG_MAX_SRQ_MASK) >>
1093                 OCRDMA_MBX_QUERY_CFG_MAX_SRQ_OFFSET;
1094         attr->max_send_sge = ((rsp->max_write_send_sge &
1095                                OCRDMA_MBX_QUERY_CFG_MAX_SEND_SGE_MASK) >>
1096                               OCRDMA_MBX_QUERY_CFG_MAX_SEND_SGE_SHIFT);
1097         attr->max_recv_sge = (rsp->max_write_send_sge &
1098                               OCRDMA_MBX_QUERY_CFG_MAX_SEND_SGE_MASK) >>
1099             OCRDMA_MBX_QUERY_CFG_MAX_SEND_SGE_SHIFT;
1100         attr->max_srq_sge = (rsp->max_srq_rqe_sge &
1101                               OCRDMA_MBX_QUERY_CFG_MAX_SRQ_SGE_MASK) >>
1102             OCRDMA_MBX_QUERY_CFG_MAX_SRQ_SGE_OFFSET;
1103         attr->max_rdma_sge = (rsp->max_write_send_sge &
1104                               OCRDMA_MBX_QUERY_CFG_MAX_WRITE_SGE_MASK) >>
1105             OCRDMA_MBX_QUERY_CFG_MAX_WRITE_SGE_SHIFT;
1106         attr->max_ord_per_qp = (rsp->max_ird_ord_per_qp &
1107                                 OCRDMA_MBX_QUERY_CFG_MAX_ORD_PER_QP_MASK) >>
1108             OCRDMA_MBX_QUERY_CFG_MAX_ORD_PER_QP_SHIFT;
1109         attr->max_ird_per_qp = (rsp->max_ird_ord_per_qp &
1110                                 OCRDMA_MBX_QUERY_CFG_MAX_IRD_PER_QP_MASK) >>
1111             OCRDMA_MBX_QUERY_CFG_MAX_IRD_PER_QP_SHIFT;
1112         attr->cq_overflow_detect = (rsp->qp_srq_cq_ird_ord &
1113                                     OCRDMA_MBX_QUERY_CFG_CQ_OVERFLOW_MASK) >>
1114             OCRDMA_MBX_QUERY_CFG_CQ_OVERFLOW_SHIFT;
1115         attr->srq_supported = (rsp->qp_srq_cq_ird_ord &
1116                                OCRDMA_MBX_QUERY_CFG_SRQ_SUPPORTED_MASK) >>
1117             OCRDMA_MBX_QUERY_CFG_SRQ_SUPPORTED_SHIFT;
1118         attr->local_ca_ack_delay = (rsp->max_pd_ca_ack_delay &
1119                                     OCRDMA_MBX_QUERY_CFG_CA_ACK_DELAY_MASK) >>
1120             OCRDMA_MBX_QUERY_CFG_CA_ACK_DELAY_SHIFT;
1121         attr->max_mw = rsp->max_mw;
1122         attr->max_mr = rsp->max_mr;
1123         attr->max_mr_size = ((u64)rsp->max_mr_size_hi << 32) |
1124                               rsp->max_mr_size_lo;
1125         attr->max_fmr = 0;
1126         attr->max_pages_per_frmr = rsp->max_pages_per_frmr;
1127         attr->max_num_mr_pbl = rsp->max_num_mr_pbl;
1128         attr->max_cqe = rsp->max_cq_cqes_per_cq &
1129                         OCRDMA_MBX_QUERY_CFG_MAX_CQES_PER_CQ_MASK;
1130         attr->max_cq = (rsp->max_cq_cqes_per_cq &
1131                         OCRDMA_MBX_QUERY_CFG_MAX_CQ_MASK) >>
1132                         OCRDMA_MBX_QUERY_CFG_MAX_CQ_OFFSET;
1133         attr->wqe_size = ((rsp->wqe_rqe_stride_max_dpp_cqs &
1134                 OCRDMA_MBX_QUERY_CFG_MAX_WQE_SIZE_MASK) >>
1135                 OCRDMA_MBX_QUERY_CFG_MAX_WQE_SIZE_OFFSET) *
1136                 OCRDMA_WQE_STRIDE;
1137         attr->rqe_size = ((rsp->wqe_rqe_stride_max_dpp_cqs &
1138                 OCRDMA_MBX_QUERY_CFG_MAX_RQE_SIZE_MASK) >>
1139                 OCRDMA_MBX_QUERY_CFG_MAX_RQE_SIZE_OFFSET) *
1140                 OCRDMA_WQE_STRIDE;
1141         attr->max_inline_data =
1142             attr->wqe_size - (sizeof(struct ocrdma_hdr_wqe) +
1143                               sizeof(struct ocrdma_sge));
1144         if (ocrdma_get_asic_type(dev) == OCRDMA_ASIC_GEN_SKH_R) {
1145                 attr->ird = 1;
1146                 attr->ird_page_size = OCRDMA_MIN_Q_PAGE_SIZE;
1147                 attr->num_ird_pages = MAX_OCRDMA_IRD_PAGES;
1148         }
1149         dev->attr.max_wqe = rsp->max_wqes_rqes_per_q >>
1150                  OCRDMA_MBX_QUERY_CFG_MAX_WQES_PER_WQ_OFFSET;
1151         dev->attr.max_rqe = rsp->max_wqes_rqes_per_q &
1152                 OCRDMA_MBX_QUERY_CFG_MAX_RQES_PER_RQ_MASK;
1153 }
1154
1155 static int ocrdma_check_fw_config(struct ocrdma_dev *dev,
1156                                    struct ocrdma_fw_conf_rsp *conf)
1157 {
1158         u32 fn_mode;
1159
1160         fn_mode = conf->fn_mode & OCRDMA_FN_MODE_RDMA;
1161         if (fn_mode != OCRDMA_FN_MODE_RDMA)
1162                 return -EINVAL;
1163         dev->base_eqid = conf->base_eqid;
1164         dev->max_eq = conf->max_eq;
1165         return 0;
1166 }
1167
1168 /* can be issued only during init time. */
1169 static int ocrdma_mbx_query_fw_ver(struct ocrdma_dev *dev)
1170 {
1171         int status = -ENOMEM;
1172         struct ocrdma_mqe *cmd;
1173         struct ocrdma_fw_ver_rsp *rsp;
1174
1175         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_GET_FW_VER, sizeof(*cmd));
1176         if (!cmd)
1177                 return -ENOMEM;
1178         ocrdma_init_mch((struct ocrdma_mbx_hdr *)&cmd->u.cmd[0],
1179                         OCRDMA_CMD_GET_FW_VER,
1180                         OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
1181
1182         status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1183         if (status)
1184                 goto mbx_err;
1185         rsp = (struct ocrdma_fw_ver_rsp *)cmd;
1186         memset(&dev->attr.fw_ver[0], 0, sizeof(dev->attr.fw_ver));
1187         memcpy(&dev->attr.fw_ver[0], &rsp->running_ver[0],
1188                sizeof(rsp->running_ver));
1189         ocrdma_le32_to_cpu(dev->attr.fw_ver, sizeof(rsp->running_ver));
1190 mbx_err:
1191         kfree(cmd);
1192         return status;
1193 }
1194
1195 /* can be issued only during init time. */
1196 static int ocrdma_mbx_query_fw_config(struct ocrdma_dev *dev)
1197 {
1198         int status = -ENOMEM;
1199         struct ocrdma_mqe *cmd;
1200         struct ocrdma_fw_conf_rsp *rsp;
1201
1202         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_GET_FW_CONFIG, sizeof(*cmd));
1203         if (!cmd)
1204                 return -ENOMEM;
1205         ocrdma_init_mch((struct ocrdma_mbx_hdr *)&cmd->u.cmd[0],
1206                         OCRDMA_CMD_GET_FW_CONFIG,
1207                         OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
1208         status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1209         if (status)
1210                 goto mbx_err;
1211         rsp = (struct ocrdma_fw_conf_rsp *)cmd;
1212         status = ocrdma_check_fw_config(dev, rsp);
1213 mbx_err:
1214         kfree(cmd);
1215         return status;
1216 }
1217
1218 int ocrdma_mbx_rdma_stats(struct ocrdma_dev *dev, bool reset)
1219 {
1220         struct ocrdma_rdma_stats_req *req = dev->stats_mem.va;
1221         struct ocrdma_mqe *mqe = &dev->stats_mem.mqe;
1222         struct ocrdma_rdma_stats_resp *old_stats;
1223         int status;
1224
1225         old_stats = kmalloc(sizeof(*old_stats), GFP_KERNEL);
1226         if (old_stats == NULL)
1227                 return -ENOMEM;
1228
1229         memset(mqe, 0, sizeof(*mqe));
1230         mqe->hdr.pyld_len = dev->stats_mem.size;
1231         mqe->hdr.spcl_sge_cnt_emb |=
1232                         (1 << OCRDMA_MQE_HDR_SGE_CNT_SHIFT) &
1233                                 OCRDMA_MQE_HDR_SGE_CNT_MASK;
1234         mqe->u.nonemb_req.sge[0].pa_lo = (u32) (dev->stats_mem.pa & 0xffffffff);
1235         mqe->u.nonemb_req.sge[0].pa_hi = (u32) upper_32_bits(dev->stats_mem.pa);
1236         mqe->u.nonemb_req.sge[0].len = dev->stats_mem.size;
1237
1238         /* Cache the old stats */
1239         memcpy(old_stats, req, sizeof(struct ocrdma_rdma_stats_resp));
1240         memset(req, 0, dev->stats_mem.size);
1241
1242         ocrdma_init_mch((struct ocrdma_mbx_hdr *)req,
1243                         OCRDMA_CMD_GET_RDMA_STATS,
1244                         OCRDMA_SUBSYS_ROCE,
1245                         dev->stats_mem.size);
1246         if (reset)
1247                 req->reset_stats = reset;
1248
1249         status = ocrdma_nonemb_mbx_cmd(dev, mqe, dev->stats_mem.va);
1250         if (status)
1251                 /* Copy from cache, if mbox fails */
1252                 memcpy(req, old_stats, sizeof(struct ocrdma_rdma_stats_resp));
1253         else
1254                 ocrdma_le32_to_cpu(req, dev->stats_mem.size);
1255
1256         kfree(old_stats);
1257         return status;
1258 }
1259
1260 static int ocrdma_mbx_get_ctrl_attribs(struct ocrdma_dev *dev)
1261 {
1262         int status = -ENOMEM;
1263         struct ocrdma_dma_mem dma;
1264         struct ocrdma_mqe *mqe;
1265         struct ocrdma_get_ctrl_attribs_rsp *ctrl_attr_rsp;
1266         struct mgmt_hba_attribs *hba_attribs;
1267
1268         mqe = kzalloc(sizeof(struct ocrdma_mqe), GFP_KERNEL);
1269         if (!mqe)
1270                 return status;
1271
1272         dma.size = sizeof(struct ocrdma_get_ctrl_attribs_rsp);
1273         dma.va   = dma_alloc_coherent(&dev->nic_info.pdev->dev,
1274                                         dma.size, &dma.pa, GFP_KERNEL);
1275         if (!dma.va)
1276                 goto free_mqe;
1277
1278         mqe->hdr.pyld_len = dma.size;
1279         mqe->hdr.spcl_sge_cnt_emb |=
1280                         (1 << OCRDMA_MQE_HDR_SGE_CNT_SHIFT) &
1281                         OCRDMA_MQE_HDR_SGE_CNT_MASK;
1282         mqe->u.nonemb_req.sge[0].pa_lo = (u32) (dma.pa & 0xffffffff);
1283         mqe->u.nonemb_req.sge[0].pa_hi = (u32) upper_32_bits(dma.pa);
1284         mqe->u.nonemb_req.sge[0].len = dma.size;
1285
1286         memset(dma.va, 0, dma.size);
1287         ocrdma_init_mch((struct ocrdma_mbx_hdr *)dma.va,
1288                         OCRDMA_CMD_GET_CTRL_ATTRIBUTES,
1289                         OCRDMA_SUBSYS_COMMON,
1290                         dma.size);
1291
1292         status = ocrdma_nonemb_mbx_cmd(dev, mqe, dma.va);
1293         if (!status) {
1294                 ctrl_attr_rsp = (struct ocrdma_get_ctrl_attribs_rsp *)dma.va;
1295                 hba_attribs = &ctrl_attr_rsp->ctrl_attribs.hba_attribs;
1296
1297                 dev->hba_port_num = (hba_attribs->ptpnum_maxdoms_hbast_cv &
1298                                         OCRDMA_HBA_ATTRB_PTNUM_MASK)
1299                                         >> OCRDMA_HBA_ATTRB_PTNUM_SHIFT;
1300                 strncpy(dev->model_number,
1301                         hba_attribs->controller_model_number, 31);
1302         }
1303         dma_free_coherent(&dev->nic_info.pdev->dev, dma.size, dma.va, dma.pa);
1304 free_mqe:
1305         kfree(mqe);
1306         return status;
1307 }
1308
1309 static int ocrdma_mbx_query_dev(struct ocrdma_dev *dev)
1310 {
1311         int status = -ENOMEM;
1312         struct ocrdma_mbx_query_config *rsp;
1313         struct ocrdma_mqe *cmd;
1314
1315         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_QUERY_CONFIG, sizeof(*cmd));
1316         if (!cmd)
1317                 return status;
1318         status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1319         if (status)
1320                 goto mbx_err;
1321         rsp = (struct ocrdma_mbx_query_config *)cmd;
1322         ocrdma_get_attr(dev, &dev->attr, rsp);
1323 mbx_err:
1324         kfree(cmd);
1325         return status;
1326 }
1327
1328 int ocrdma_mbx_get_link_speed(struct ocrdma_dev *dev, u8 *lnk_speed)
1329 {
1330         int status = -ENOMEM;
1331         struct ocrdma_get_link_speed_rsp *rsp;
1332         struct ocrdma_mqe *cmd;
1333
1334         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_QUERY_NTWK_LINK_CONFIG_V1,
1335                                   sizeof(*cmd));
1336         if (!cmd)
1337                 return status;
1338         ocrdma_init_mch((struct ocrdma_mbx_hdr *)&cmd->u.cmd[0],
1339                         OCRDMA_CMD_QUERY_NTWK_LINK_CONFIG_V1,
1340                         OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
1341
1342         ((struct ocrdma_mbx_hdr *)cmd->u.cmd)->rsvd_version = 0x1;
1343
1344         status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1345         if (status)
1346                 goto mbx_err;
1347
1348         rsp = (struct ocrdma_get_link_speed_rsp *)cmd;
1349         *lnk_speed = (rsp->pflt_pps_ld_pnum & OCRDMA_PHY_PS_MASK)
1350                         >> OCRDMA_PHY_PS_SHIFT;
1351
1352 mbx_err:
1353         kfree(cmd);
1354         return status;
1355 }
1356
1357 static int ocrdma_mbx_get_phy_info(struct ocrdma_dev *dev)
1358 {
1359         int status = -ENOMEM;
1360         struct ocrdma_mqe *cmd;
1361         struct ocrdma_get_phy_info_rsp *rsp;
1362
1363         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_PHY_DETAILS, sizeof(*cmd));
1364         if (!cmd)
1365                 return status;
1366
1367         ocrdma_init_mch((struct ocrdma_mbx_hdr *)&cmd->u.cmd[0],
1368                         OCRDMA_CMD_PHY_DETAILS, OCRDMA_SUBSYS_COMMON,
1369                         sizeof(*cmd));
1370
1371         status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1372         if (status)
1373                 goto mbx_err;
1374
1375         rsp = (struct ocrdma_get_phy_info_rsp *)cmd;
1376         dev->phy.phy_type =
1377                         (rsp->ityp_ptyp & OCRDMA_PHY_TYPE_MASK);
1378         dev->phy.interface_type =
1379                         (rsp->ityp_ptyp & OCRDMA_IF_TYPE_MASK)
1380                                 >> OCRDMA_IF_TYPE_SHIFT;
1381         dev->phy.auto_speeds_supported  =
1382                         (rsp->fspeed_aspeed & OCRDMA_ASPEED_SUPP_MASK);
1383         dev->phy.fixed_speeds_supported =
1384                         (rsp->fspeed_aspeed & OCRDMA_FSPEED_SUPP_MASK)
1385                                 >> OCRDMA_FSPEED_SUPP_SHIFT;
1386 mbx_err:
1387         kfree(cmd);
1388         return status;
1389 }
1390
1391 int ocrdma_mbx_alloc_pd(struct ocrdma_dev *dev, struct ocrdma_pd *pd)
1392 {
1393         int status = -ENOMEM;
1394         struct ocrdma_alloc_pd *cmd;
1395         struct ocrdma_alloc_pd_rsp *rsp;
1396
1397         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_ALLOC_PD, sizeof(*cmd));
1398         if (!cmd)
1399                 return status;
1400         if (pd->dpp_enabled)
1401                 cmd->enable_dpp_rsvd |= OCRDMA_ALLOC_PD_ENABLE_DPP;
1402         status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1403         if (status)
1404                 goto mbx_err;
1405         rsp = (struct ocrdma_alloc_pd_rsp *)cmd;
1406         pd->id = rsp->dpp_page_pdid & OCRDMA_ALLOC_PD_RSP_PDID_MASK;
1407         if (rsp->dpp_page_pdid & OCRDMA_ALLOC_PD_RSP_DPP) {
1408                 pd->dpp_enabled = true;
1409                 pd->dpp_page = rsp->dpp_page_pdid >>
1410                                 OCRDMA_ALLOC_PD_RSP_DPP_PAGE_SHIFT;
1411         } else {
1412                 pd->dpp_enabled = false;
1413                 pd->num_dpp_qp = 0;
1414         }
1415 mbx_err:
1416         kfree(cmd);
1417         return status;
1418 }
1419
1420 int ocrdma_mbx_dealloc_pd(struct ocrdma_dev *dev, struct ocrdma_pd *pd)
1421 {
1422         int status = -ENOMEM;
1423         struct ocrdma_dealloc_pd *cmd;
1424
1425         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DEALLOC_PD, sizeof(*cmd));
1426         if (!cmd)
1427                 return status;
1428         cmd->id = pd->id;
1429         status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1430         kfree(cmd);
1431         return status;
1432 }
1433
1434
1435 static int ocrdma_mbx_alloc_pd_range(struct ocrdma_dev *dev)
1436 {
1437         int status = -ENOMEM;
1438         size_t pd_bitmap_size;
1439         struct ocrdma_alloc_pd_range *cmd;
1440         struct ocrdma_alloc_pd_range_rsp *rsp;
1441
1442         /* Pre allocate the DPP PDs */
1443         if (dev->attr.max_dpp_pds) {
1444                 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_ALLOC_PD_RANGE,
1445                                           sizeof(*cmd));
1446                 if (!cmd)
1447                         return -ENOMEM;
1448                 cmd->pd_count = dev->attr.max_dpp_pds;
1449                 cmd->enable_dpp_rsvd |= OCRDMA_ALLOC_PD_ENABLE_DPP;
1450                 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1451                 rsp = (struct ocrdma_alloc_pd_range_rsp *)cmd;
1452
1453                 if (!status && (rsp->dpp_page_pdid & OCRDMA_ALLOC_PD_RSP_DPP) &&
1454                     rsp->pd_count) {
1455                         dev->pd_mgr->dpp_page_index = rsp->dpp_page_pdid >>
1456                                         OCRDMA_ALLOC_PD_RSP_DPP_PAGE_SHIFT;
1457                         dev->pd_mgr->pd_dpp_start = rsp->dpp_page_pdid &
1458                                         OCRDMA_ALLOC_PD_RNG_RSP_START_PDID_MASK;
1459                         dev->pd_mgr->max_dpp_pd = rsp->pd_count;
1460                         pd_bitmap_size =
1461                                 BITS_TO_LONGS(rsp->pd_count) * sizeof(long);
1462                         dev->pd_mgr->pd_dpp_bitmap = kzalloc(pd_bitmap_size,
1463                                                              GFP_KERNEL);
1464                 }
1465                 kfree(cmd);
1466         }
1467
1468         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_ALLOC_PD_RANGE, sizeof(*cmd));
1469         if (!cmd)
1470                 return -ENOMEM;
1471
1472         cmd->pd_count = dev->attr.max_pd - dev->attr.max_dpp_pds;
1473         status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1474         rsp = (struct ocrdma_alloc_pd_range_rsp *)cmd;
1475         if (!status && rsp->pd_count) {
1476                 dev->pd_mgr->pd_norm_start = rsp->dpp_page_pdid &
1477                                         OCRDMA_ALLOC_PD_RNG_RSP_START_PDID_MASK;
1478                 dev->pd_mgr->max_normal_pd = rsp->pd_count;
1479                 pd_bitmap_size = BITS_TO_LONGS(rsp->pd_count) * sizeof(long);
1480                 dev->pd_mgr->pd_norm_bitmap = kzalloc(pd_bitmap_size,
1481                                                       GFP_KERNEL);
1482         }
1483         kfree(cmd);
1484
1485         if (dev->pd_mgr->pd_norm_bitmap || dev->pd_mgr->pd_dpp_bitmap) {
1486                 /* Enable PD resource manager */
1487                 dev->pd_mgr->pd_prealloc_valid = true;
1488                 return 0;
1489         }
1490         return status;
1491 }
1492
1493 static void ocrdma_mbx_dealloc_pd_range(struct ocrdma_dev *dev)
1494 {
1495         struct ocrdma_dealloc_pd_range *cmd;
1496
1497         /* return normal PDs to firmware */
1498         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DEALLOC_PD_RANGE, sizeof(*cmd));
1499         if (!cmd)
1500                 goto mbx_err;
1501
1502         if (dev->pd_mgr->max_normal_pd) {
1503                 cmd->start_pd_id = dev->pd_mgr->pd_norm_start;
1504                 cmd->pd_count = dev->pd_mgr->max_normal_pd;
1505                 ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1506         }
1507
1508         if (dev->pd_mgr->max_dpp_pd) {
1509                 kfree(cmd);
1510                 /* return DPP PDs to firmware */
1511                 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DEALLOC_PD_RANGE,
1512                                           sizeof(*cmd));
1513                 if (!cmd)
1514                         goto mbx_err;
1515
1516                 cmd->start_pd_id = dev->pd_mgr->pd_dpp_start;
1517                 cmd->pd_count = dev->pd_mgr->max_dpp_pd;
1518                 ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1519         }
1520 mbx_err:
1521         kfree(cmd);
1522 }
1523
1524 void ocrdma_alloc_pd_pool(struct ocrdma_dev *dev)
1525 {
1526         int status;
1527
1528         dev->pd_mgr = kzalloc(sizeof(struct ocrdma_pd_resource_mgr),
1529                               GFP_KERNEL);
1530         if (!dev->pd_mgr) {
1531                 pr_err("%s(%d)Memory allocation failure.\n", __func__, dev->id);
1532                 return;
1533         }
1534         status = ocrdma_mbx_alloc_pd_range(dev);
1535         if (status) {
1536                 pr_err("%s(%d) Unable to initialize PD pool, using default.\n",
1537                          __func__, dev->id);
1538         }
1539 }
1540
1541 static void ocrdma_free_pd_pool(struct ocrdma_dev *dev)
1542 {
1543         ocrdma_mbx_dealloc_pd_range(dev);
1544         kfree(dev->pd_mgr->pd_norm_bitmap);
1545         kfree(dev->pd_mgr->pd_dpp_bitmap);
1546         kfree(dev->pd_mgr);
1547 }
1548
1549 static int ocrdma_build_q_conf(u32 *num_entries, int entry_size,
1550                                int *num_pages, int *page_size)
1551 {
1552         int i;
1553         int mem_size;
1554
1555         *num_entries = roundup_pow_of_two(*num_entries);
1556         mem_size = *num_entries * entry_size;
1557         /* find the possible lowest possible multiplier */
1558         for (i = 0; i < OCRDMA_MAX_Q_PAGE_SIZE_CNT; i++) {
1559                 if (mem_size <= (OCRDMA_Q_PAGE_BASE_SIZE << i))
1560                         break;
1561         }
1562         if (i >= OCRDMA_MAX_Q_PAGE_SIZE_CNT)
1563                 return -EINVAL;
1564         mem_size = roundup(mem_size,
1565                        ((OCRDMA_Q_PAGE_BASE_SIZE << i) / OCRDMA_MAX_Q_PAGES));
1566         *num_pages =
1567             mem_size / ((OCRDMA_Q_PAGE_BASE_SIZE << i) / OCRDMA_MAX_Q_PAGES);
1568         *page_size = ((OCRDMA_Q_PAGE_BASE_SIZE << i) / OCRDMA_MAX_Q_PAGES);
1569         *num_entries = mem_size / entry_size;
1570         return 0;
1571 }
1572
1573 static int ocrdma_mbx_create_ah_tbl(struct ocrdma_dev *dev)
1574 {
1575         int i;
1576         int status = 0;
1577         int max_ah;
1578         struct ocrdma_create_ah_tbl *cmd;
1579         struct ocrdma_create_ah_tbl_rsp *rsp;
1580         struct pci_dev *pdev = dev->nic_info.pdev;
1581         dma_addr_t pa;
1582         struct ocrdma_pbe *pbes;
1583
1584         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_CREATE_AH_TBL, sizeof(*cmd));
1585         if (!cmd)
1586                 return status;
1587
1588         max_ah = OCRDMA_MAX_AH;
1589         dev->av_tbl.size = sizeof(struct ocrdma_av) * max_ah;
1590
1591         /* number of PBEs in PBL */
1592         cmd->ah_conf = (OCRDMA_AH_TBL_PAGES <<
1593                                 OCRDMA_CREATE_AH_NUM_PAGES_SHIFT) &
1594                                 OCRDMA_CREATE_AH_NUM_PAGES_MASK;
1595
1596         /* page size */
1597         for (i = 0; i < OCRDMA_MAX_Q_PAGE_SIZE_CNT; i++) {
1598                 if (PAGE_SIZE == (OCRDMA_MIN_Q_PAGE_SIZE << i))
1599                         break;
1600         }
1601         cmd->ah_conf |= (i << OCRDMA_CREATE_AH_PAGE_SIZE_SHIFT) &
1602                                 OCRDMA_CREATE_AH_PAGE_SIZE_MASK;
1603
1604         /* ah_entry size */
1605         cmd->ah_conf |= (sizeof(struct ocrdma_av) <<
1606                                 OCRDMA_CREATE_AH_ENTRY_SIZE_SHIFT) &
1607                                 OCRDMA_CREATE_AH_ENTRY_SIZE_MASK;
1608
1609         dev->av_tbl.pbl.va = dma_alloc_coherent(&pdev->dev, PAGE_SIZE,
1610                                                 &dev->av_tbl.pbl.pa,
1611                                                 GFP_KERNEL);
1612         if (dev->av_tbl.pbl.va == NULL)
1613                 goto mem_err;
1614
1615         dev->av_tbl.va = dma_alloc_coherent(&pdev->dev, dev->av_tbl.size,
1616                                             &pa, GFP_KERNEL);
1617         if (dev->av_tbl.va == NULL)
1618                 goto mem_err_ah;
1619         dev->av_tbl.pa = pa;
1620         dev->av_tbl.num_ah = max_ah;
1621         memset(dev->av_tbl.va, 0, dev->av_tbl.size);
1622
1623         pbes = (struct ocrdma_pbe *)dev->av_tbl.pbl.va;
1624         for (i = 0; i < dev->av_tbl.size / OCRDMA_MIN_Q_PAGE_SIZE; i++) {
1625                 pbes[i].pa_lo = (u32)cpu_to_le32(pa & 0xffffffff);
1626                 pbes[i].pa_hi = (u32)cpu_to_le32(upper_32_bits(pa));
1627                 pa += PAGE_SIZE;
1628         }
1629         cmd->tbl_addr[0].lo = (u32)(dev->av_tbl.pbl.pa & 0xFFFFFFFF);
1630         cmd->tbl_addr[0].hi = (u32)upper_32_bits(dev->av_tbl.pbl.pa);
1631         status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1632         if (status)
1633                 goto mbx_err;
1634         rsp = (struct ocrdma_create_ah_tbl_rsp *)cmd;
1635         dev->av_tbl.ahid = rsp->ahid & 0xFFFF;
1636         kfree(cmd);
1637         return 0;
1638
1639 mbx_err:
1640         dma_free_coherent(&pdev->dev, dev->av_tbl.size, dev->av_tbl.va,
1641                           dev->av_tbl.pa);
1642         dev->av_tbl.va = NULL;
1643 mem_err_ah:
1644         dma_free_coherent(&pdev->dev, PAGE_SIZE, dev->av_tbl.pbl.va,
1645                           dev->av_tbl.pbl.pa);
1646         dev->av_tbl.pbl.va = NULL;
1647         dev->av_tbl.size = 0;
1648 mem_err:
1649         kfree(cmd);
1650         return status;
1651 }
1652
1653 static void ocrdma_mbx_delete_ah_tbl(struct ocrdma_dev *dev)
1654 {
1655         struct ocrdma_delete_ah_tbl *cmd;
1656         struct pci_dev *pdev = dev->nic_info.pdev;
1657
1658         if (dev->av_tbl.va == NULL)
1659                 return;
1660
1661         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DELETE_AH_TBL, sizeof(*cmd));
1662         if (!cmd)
1663                 return;
1664         cmd->ahid = dev->av_tbl.ahid;
1665
1666         ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1667         dma_free_coherent(&pdev->dev, dev->av_tbl.size, dev->av_tbl.va,
1668                           dev->av_tbl.pa);
1669         dev->av_tbl.va = NULL;
1670         dma_free_coherent(&pdev->dev, PAGE_SIZE, dev->av_tbl.pbl.va,
1671                           dev->av_tbl.pbl.pa);
1672         kfree(cmd);
1673 }
1674
1675 /* Multiple CQs uses the EQ. This routine returns least used
1676  * EQ to associate with CQ. This will distributes the interrupt
1677  * processing and CPU load to associated EQ, vector and so to that CPU.
1678  */
1679 static u16 ocrdma_bind_eq(struct ocrdma_dev *dev)
1680 {
1681         int i, selected_eq = 0, cq_cnt = 0;
1682         u16 eq_id;
1683
1684         mutex_lock(&dev->dev_lock);
1685         cq_cnt = dev->eq_tbl[0].cq_cnt;
1686         eq_id = dev->eq_tbl[0].q.id;
1687         /* find the EQ which is has the least number of
1688          * CQs associated with it.
1689          */
1690         for (i = 0; i < dev->eq_cnt; i++) {
1691                 if (dev->eq_tbl[i].cq_cnt < cq_cnt) {
1692                         cq_cnt = dev->eq_tbl[i].cq_cnt;
1693                         eq_id = dev->eq_tbl[i].q.id;
1694                         selected_eq = i;
1695                 }
1696         }
1697         dev->eq_tbl[selected_eq].cq_cnt += 1;
1698         mutex_unlock(&dev->dev_lock);
1699         return eq_id;
1700 }
1701
1702 static void ocrdma_unbind_eq(struct ocrdma_dev *dev, u16 eq_id)
1703 {
1704         int i;
1705
1706         mutex_lock(&dev->dev_lock);
1707         i = ocrdma_get_eq_table_index(dev, eq_id);
1708         if (i == -EINVAL)
1709                 BUG();
1710         dev->eq_tbl[i].cq_cnt -= 1;
1711         mutex_unlock(&dev->dev_lock);
1712 }
1713
1714 int ocrdma_mbx_create_cq(struct ocrdma_dev *dev, struct ocrdma_cq *cq,
1715                          int entries, int dpp_cq, u16 pd_id)
1716 {
1717         int status = -ENOMEM; int max_hw_cqe;
1718         struct pci_dev *pdev = dev->nic_info.pdev;
1719         struct ocrdma_create_cq *cmd;
1720         struct ocrdma_create_cq_rsp *rsp;
1721         u32 hw_pages, cqe_size, page_size, cqe_count;
1722
1723         if (entries > dev->attr.max_cqe) {
1724                 pr_err("%s(%d) max_cqe=0x%x, requester_cqe=0x%x\n",
1725                        __func__, dev->id, dev->attr.max_cqe, entries);
1726                 return -EINVAL;
1727         }
1728         if (dpp_cq && (ocrdma_get_asic_type(dev) != OCRDMA_ASIC_GEN_SKH_R))
1729                 return -EINVAL;
1730
1731         if (dpp_cq) {
1732                 cq->max_hw_cqe = 1;
1733                 max_hw_cqe = 1;
1734                 cqe_size = OCRDMA_DPP_CQE_SIZE;
1735                 hw_pages = 1;
1736         } else {
1737                 cq->max_hw_cqe = dev->attr.max_cqe;
1738                 max_hw_cqe = dev->attr.max_cqe;
1739                 cqe_size = sizeof(struct ocrdma_cqe);
1740                 hw_pages = OCRDMA_CREATE_CQ_MAX_PAGES;
1741         }
1742
1743         cq->len = roundup(max_hw_cqe * cqe_size, OCRDMA_MIN_Q_PAGE_SIZE);
1744
1745         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_CREATE_CQ, sizeof(*cmd));
1746         if (!cmd)
1747                 return -ENOMEM;
1748         ocrdma_init_mch(&cmd->cmd.req, OCRDMA_CMD_CREATE_CQ,
1749                         OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
1750         cq->va = dma_alloc_coherent(&pdev->dev, cq->len, &cq->pa, GFP_KERNEL);
1751         if (!cq->va) {
1752                 status = -ENOMEM;
1753                 goto mem_err;
1754         }
1755         memset(cq->va, 0, cq->len);
1756         page_size = cq->len / hw_pages;
1757         cmd->cmd.pgsz_pgcnt = (page_size / OCRDMA_MIN_Q_PAGE_SIZE) <<
1758                                         OCRDMA_CREATE_CQ_PAGE_SIZE_SHIFT;
1759         cmd->cmd.pgsz_pgcnt |= hw_pages;
1760         cmd->cmd.ev_cnt_flags = OCRDMA_CREATE_CQ_DEF_FLAGS;
1761
1762         cq->eqn = ocrdma_bind_eq(dev);
1763         cmd->cmd.req.rsvd_version = OCRDMA_CREATE_CQ_VER3;
1764         cqe_count = cq->len / cqe_size;
1765         cq->cqe_cnt = cqe_count;
1766         if (cqe_count > 1024) {
1767                 /* Set cnt to 3 to indicate more than 1024 cq entries */
1768                 cmd->cmd.ev_cnt_flags |= (0x3 << OCRDMA_CREATE_CQ_CNT_SHIFT);
1769         } else {
1770                 u8 count = 0;
1771                 switch (cqe_count) {
1772                 case 256:
1773                         count = 0;
1774                         break;
1775                 case 512:
1776                         count = 1;
1777                         break;
1778                 case 1024:
1779                         count = 2;
1780                         break;
1781                 default:
1782                         goto mbx_err;
1783                 }
1784                 cmd->cmd.ev_cnt_flags |= (count << OCRDMA_CREATE_CQ_CNT_SHIFT);
1785         }
1786         /* shared eq between all the consumer cqs. */
1787         cmd->cmd.eqn = cq->eqn;
1788         if (ocrdma_get_asic_type(dev) == OCRDMA_ASIC_GEN_SKH_R) {
1789                 if (dpp_cq)
1790                         cmd->cmd.pgsz_pgcnt |= OCRDMA_CREATE_CQ_DPP <<
1791                                 OCRDMA_CREATE_CQ_TYPE_SHIFT;
1792                 cq->phase_change = false;
1793                 cmd->cmd.pdid_cqecnt = (cq->len / cqe_size);
1794         } else {
1795                 cmd->cmd.pdid_cqecnt = (cq->len / cqe_size) - 1;
1796                 cmd->cmd.ev_cnt_flags |= OCRDMA_CREATE_CQ_FLAGS_AUTO_VALID;
1797                 cq->phase_change = true;
1798         }
1799
1800         /* pd_id valid only for v3 */
1801         cmd->cmd.pdid_cqecnt |= (pd_id <<
1802                 OCRDMA_CREATE_CQ_CMD_PDID_SHIFT);
1803         ocrdma_build_q_pages(&cmd->cmd.pa[0], hw_pages, cq->pa, page_size);
1804         status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1805         if (status)
1806                 goto mbx_err;
1807
1808         rsp = (struct ocrdma_create_cq_rsp *)cmd;
1809         cq->id = (u16) (rsp->rsp.cq_id & OCRDMA_CREATE_CQ_RSP_CQ_ID_MASK);
1810         kfree(cmd);
1811         return 0;
1812 mbx_err:
1813         ocrdma_unbind_eq(dev, cq->eqn);
1814         dma_free_coherent(&pdev->dev, cq->len, cq->va, cq->pa);
1815 mem_err:
1816         kfree(cmd);
1817         return status;
1818 }
1819
1820 int ocrdma_mbx_destroy_cq(struct ocrdma_dev *dev, struct ocrdma_cq *cq)
1821 {
1822         int status = -ENOMEM;
1823         struct ocrdma_destroy_cq *cmd;
1824
1825         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DELETE_CQ, sizeof(*cmd));
1826         if (!cmd)
1827                 return status;
1828         ocrdma_init_mch(&cmd->req, OCRDMA_CMD_DELETE_CQ,
1829                         OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
1830
1831         cmd->bypass_flush_qid |=
1832             (cq->id << OCRDMA_DESTROY_CQ_QID_SHIFT) &
1833             OCRDMA_DESTROY_CQ_QID_MASK;
1834
1835         status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1836         ocrdma_unbind_eq(dev, cq->eqn);
1837         dma_free_coherent(&dev->nic_info.pdev->dev, cq->len, cq->va, cq->pa);
1838         kfree(cmd);
1839         return status;
1840 }
1841
1842 int ocrdma_mbx_alloc_lkey(struct ocrdma_dev *dev, struct ocrdma_hw_mr *hwmr,
1843                           u32 pdid, int addr_check)
1844 {
1845         int status = -ENOMEM;
1846         struct ocrdma_alloc_lkey *cmd;
1847         struct ocrdma_alloc_lkey_rsp *rsp;
1848
1849         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_ALLOC_LKEY, sizeof(*cmd));
1850         if (!cmd)
1851                 return status;
1852         cmd->pdid = pdid;
1853         cmd->pbl_sz_flags |= addr_check;
1854         cmd->pbl_sz_flags |= (hwmr->fr_mr << OCRDMA_ALLOC_LKEY_FMR_SHIFT);
1855         cmd->pbl_sz_flags |=
1856             (hwmr->remote_wr << OCRDMA_ALLOC_LKEY_REMOTE_WR_SHIFT);
1857         cmd->pbl_sz_flags |=
1858             (hwmr->remote_rd << OCRDMA_ALLOC_LKEY_REMOTE_RD_SHIFT);
1859         cmd->pbl_sz_flags |=
1860             (hwmr->local_wr << OCRDMA_ALLOC_LKEY_LOCAL_WR_SHIFT);
1861         cmd->pbl_sz_flags |=
1862             (hwmr->remote_atomic << OCRDMA_ALLOC_LKEY_REMOTE_ATOMIC_SHIFT);
1863         cmd->pbl_sz_flags |=
1864             (hwmr->num_pbls << OCRDMA_ALLOC_LKEY_PBL_SIZE_SHIFT);
1865
1866         status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1867         if (status)
1868                 goto mbx_err;
1869         rsp = (struct ocrdma_alloc_lkey_rsp *)cmd;
1870         hwmr->lkey = rsp->lrkey;
1871 mbx_err:
1872         kfree(cmd);
1873         return status;
1874 }
1875
1876 int ocrdma_mbx_dealloc_lkey(struct ocrdma_dev *dev, int fr_mr, u32 lkey)
1877 {
1878         int status = -ENOMEM;
1879         struct ocrdma_dealloc_lkey *cmd;
1880
1881         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DEALLOC_LKEY, sizeof(*cmd));
1882         if (!cmd)
1883                 return -ENOMEM;
1884         cmd->lkey = lkey;
1885         cmd->rsvd_frmr = fr_mr ? 1 : 0;
1886         status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1887         if (status)
1888                 goto mbx_err;
1889 mbx_err:
1890         kfree(cmd);
1891         return status;
1892 }
1893
1894 static int ocrdma_mbx_reg_mr(struct ocrdma_dev *dev, struct ocrdma_hw_mr *hwmr,
1895                              u32 pdid, u32 pbl_cnt, u32 pbe_size, u32 last)
1896 {
1897         int status = -ENOMEM;
1898         int i;
1899         struct ocrdma_reg_nsmr *cmd;
1900         struct ocrdma_reg_nsmr_rsp *rsp;
1901
1902         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_REGISTER_NSMR, sizeof(*cmd));
1903         if (!cmd)
1904                 return -ENOMEM;
1905         cmd->num_pbl_pdid =
1906             pdid | (hwmr->num_pbls << OCRDMA_REG_NSMR_NUM_PBL_SHIFT);
1907         cmd->fr_mr = hwmr->fr_mr;
1908
1909         cmd->flags_hpage_pbe_sz |= (hwmr->remote_wr <<
1910                                     OCRDMA_REG_NSMR_REMOTE_WR_SHIFT);
1911         cmd->flags_hpage_pbe_sz |= (hwmr->remote_rd <<
1912                                     OCRDMA_REG_NSMR_REMOTE_RD_SHIFT);
1913         cmd->flags_hpage_pbe_sz |= (hwmr->local_wr <<
1914                                     OCRDMA_REG_NSMR_LOCAL_WR_SHIFT);
1915         cmd->flags_hpage_pbe_sz |= (hwmr->remote_atomic <<
1916                                     OCRDMA_REG_NSMR_REMOTE_ATOMIC_SHIFT);
1917         cmd->flags_hpage_pbe_sz |= (hwmr->mw_bind <<
1918                                     OCRDMA_REG_NSMR_BIND_MEMWIN_SHIFT);
1919         cmd->flags_hpage_pbe_sz |= (last << OCRDMA_REG_NSMR_LAST_SHIFT);
1920
1921         cmd->flags_hpage_pbe_sz |= (hwmr->pbe_size / OCRDMA_MIN_HPAGE_SIZE);
1922         cmd->flags_hpage_pbe_sz |= (hwmr->pbl_size / OCRDMA_MIN_HPAGE_SIZE) <<
1923                                         OCRDMA_REG_NSMR_HPAGE_SIZE_SHIFT;
1924         cmd->totlen_low = hwmr->len;
1925         cmd->totlen_high = upper_32_bits(hwmr->len);
1926         cmd->fbo_low = (u32) (hwmr->fbo & 0xffffffff);
1927         cmd->fbo_high = (u32) upper_32_bits(hwmr->fbo);
1928         cmd->va_loaddr = (u32) hwmr->va;
1929         cmd->va_hiaddr = (u32) upper_32_bits(hwmr->va);
1930
1931         for (i = 0; i < pbl_cnt; i++) {
1932                 cmd->pbl[i].lo = (u32) (hwmr->pbl_table[i].pa & 0xffffffff);
1933                 cmd->pbl[i].hi = upper_32_bits(hwmr->pbl_table[i].pa);
1934         }
1935         status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1936         if (status)
1937                 goto mbx_err;
1938         rsp = (struct ocrdma_reg_nsmr_rsp *)cmd;
1939         hwmr->lkey = rsp->lrkey;
1940 mbx_err:
1941         kfree(cmd);
1942         return status;
1943 }
1944
1945 static int ocrdma_mbx_reg_mr_cont(struct ocrdma_dev *dev,
1946                                   struct ocrdma_hw_mr *hwmr, u32 pbl_cnt,
1947                                   u32 pbl_offset, u32 last)
1948 {
1949         int status = -ENOMEM;
1950         int i;
1951         struct ocrdma_reg_nsmr_cont *cmd;
1952
1953         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_REGISTER_NSMR_CONT, sizeof(*cmd));
1954         if (!cmd)
1955                 return -ENOMEM;
1956         cmd->lrkey = hwmr->lkey;
1957         cmd->num_pbl_offset = (pbl_cnt << OCRDMA_REG_NSMR_CONT_NUM_PBL_SHIFT) |
1958             (pbl_offset & OCRDMA_REG_NSMR_CONT_PBL_SHIFT_MASK);
1959         cmd->last = last << OCRDMA_REG_NSMR_CONT_LAST_SHIFT;
1960
1961         for (i = 0; i < pbl_cnt; i++) {
1962                 cmd->pbl[i].lo =
1963                     (u32) (hwmr->pbl_table[i + pbl_offset].pa & 0xffffffff);
1964                 cmd->pbl[i].hi =
1965                     upper_32_bits(hwmr->pbl_table[i + pbl_offset].pa);
1966         }
1967         status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1968         if (status)
1969                 goto mbx_err;
1970 mbx_err:
1971         kfree(cmd);
1972         return status;
1973 }
1974
1975 int ocrdma_reg_mr(struct ocrdma_dev *dev,
1976                   struct ocrdma_hw_mr *hwmr, u32 pdid, int acc)
1977 {
1978         int status;
1979         u32 last = 0;
1980         u32 cur_pbl_cnt, pbl_offset;
1981         u32 pending_pbl_cnt = hwmr->num_pbls;
1982
1983         pbl_offset = 0;
1984         cur_pbl_cnt = min(pending_pbl_cnt, MAX_OCRDMA_NSMR_PBL);
1985         if (cur_pbl_cnt == pending_pbl_cnt)
1986                 last = 1;
1987
1988         status = ocrdma_mbx_reg_mr(dev, hwmr, pdid,
1989                                    cur_pbl_cnt, hwmr->pbe_size, last);
1990         if (status) {
1991                 pr_err("%s() status=%d\n", __func__, status);
1992                 return status;
1993         }
1994         /* if there is no more pbls to register then exit. */
1995         if (last)
1996                 return 0;
1997
1998         while (!last) {
1999                 pbl_offset += cur_pbl_cnt;
2000                 pending_pbl_cnt -= cur_pbl_cnt;
2001                 cur_pbl_cnt = min(pending_pbl_cnt, MAX_OCRDMA_NSMR_PBL);
2002                 /* if we reach the end of the pbls, then need to set the last
2003                  * bit, indicating no more pbls to register for this memory key.
2004                  */
2005                 if (cur_pbl_cnt == pending_pbl_cnt)
2006                         last = 1;
2007
2008                 status = ocrdma_mbx_reg_mr_cont(dev, hwmr, cur_pbl_cnt,
2009                                                 pbl_offset, last);
2010                 if (status)
2011                         break;
2012         }
2013         if (status)
2014                 pr_err("%s() err. status=%d\n", __func__, status);
2015
2016         return status;
2017 }
2018
2019 bool ocrdma_is_qp_in_sq_flushlist(struct ocrdma_cq *cq, struct ocrdma_qp *qp)
2020 {
2021         struct ocrdma_qp *tmp;
2022         bool found = false;
2023         list_for_each_entry(tmp, &cq->sq_head, sq_entry) {
2024                 if (qp == tmp) {
2025                         found = true;
2026                         break;
2027                 }
2028         }
2029         return found;
2030 }
2031
2032 bool ocrdma_is_qp_in_rq_flushlist(struct ocrdma_cq *cq, struct ocrdma_qp *qp)
2033 {
2034         struct ocrdma_qp *tmp;
2035         bool found = false;
2036         list_for_each_entry(tmp, &cq->rq_head, rq_entry) {
2037                 if (qp == tmp) {
2038                         found = true;
2039                         break;
2040                 }
2041         }
2042         return found;
2043 }
2044
2045 void ocrdma_flush_qp(struct ocrdma_qp *qp)
2046 {
2047         bool found;
2048         unsigned long flags;
2049         struct ocrdma_dev *dev = get_ocrdma_dev(qp->ibqp.device);
2050
2051         spin_lock_irqsave(&dev->flush_q_lock, flags);
2052         found = ocrdma_is_qp_in_sq_flushlist(qp->sq_cq, qp);
2053         if (!found)
2054                 list_add_tail(&qp->sq_entry, &qp->sq_cq->sq_head);
2055         if (!qp->srq) {
2056                 found = ocrdma_is_qp_in_rq_flushlist(qp->rq_cq, qp);
2057                 if (!found)
2058                         list_add_tail(&qp->rq_entry, &qp->rq_cq->rq_head);
2059         }
2060         spin_unlock_irqrestore(&dev->flush_q_lock, flags);
2061 }
2062
2063 static void ocrdma_init_hwq_ptr(struct ocrdma_qp *qp)
2064 {
2065         qp->sq.head = 0;
2066         qp->sq.tail = 0;
2067         qp->rq.head = 0;
2068         qp->rq.tail = 0;
2069 }
2070
2071 int ocrdma_qp_state_change(struct ocrdma_qp *qp, enum ib_qp_state new_ib_state,
2072                            enum ib_qp_state *old_ib_state)
2073 {
2074         unsigned long flags;
2075         int status = 0;
2076         enum ocrdma_qp_state new_state;
2077         new_state = get_ocrdma_qp_state(new_ib_state);
2078
2079         /* sync with wqe and rqe posting */
2080         spin_lock_irqsave(&qp->q_lock, flags);
2081
2082         if (old_ib_state)
2083                 *old_ib_state = get_ibqp_state(qp->state);
2084         if (new_state == qp->state) {
2085                 spin_unlock_irqrestore(&qp->q_lock, flags);
2086                 return 1;
2087         }
2088
2089
2090         if (new_state == OCRDMA_QPS_INIT) {
2091                 ocrdma_init_hwq_ptr(qp);
2092                 ocrdma_del_flush_qp(qp);
2093         } else if (new_state == OCRDMA_QPS_ERR) {
2094                 ocrdma_flush_qp(qp);
2095         }
2096
2097         qp->state = new_state;
2098
2099         spin_unlock_irqrestore(&qp->q_lock, flags);
2100         return status;
2101 }
2102
2103 static u32 ocrdma_set_create_qp_mbx_access_flags(struct ocrdma_qp *qp)
2104 {
2105         u32 flags = 0;
2106         if (qp->cap_flags & OCRDMA_QP_INB_RD)
2107                 flags |= OCRDMA_CREATE_QP_REQ_INB_RDEN_MASK;
2108         if (qp->cap_flags & OCRDMA_QP_INB_WR)
2109                 flags |= OCRDMA_CREATE_QP_REQ_INB_WREN_MASK;
2110         if (qp->cap_flags & OCRDMA_QP_MW_BIND)
2111                 flags |= OCRDMA_CREATE_QP_REQ_BIND_MEMWIN_MASK;
2112         if (qp->cap_flags & OCRDMA_QP_LKEY0)
2113                 flags |= OCRDMA_CREATE_QP_REQ_ZERO_LKEYEN_MASK;
2114         if (qp->cap_flags & OCRDMA_QP_FAST_REG)
2115                 flags |= OCRDMA_CREATE_QP_REQ_FMR_EN_MASK;
2116         return flags;
2117 }
2118
2119 static int ocrdma_set_create_qp_sq_cmd(struct ocrdma_create_qp_req *cmd,
2120                                         struct ib_qp_init_attr *attrs,
2121                                         struct ocrdma_qp *qp)
2122 {
2123         int status;
2124         u32 len, hw_pages, hw_page_size;
2125         dma_addr_t pa;
2126         struct ocrdma_pd *pd = qp->pd;
2127         struct ocrdma_dev *dev = get_ocrdma_dev(pd->ibpd.device);
2128         struct pci_dev *pdev = dev->nic_info.pdev;
2129         u32 max_wqe_allocated;
2130         u32 max_sges = attrs->cap.max_send_sge;
2131
2132         /* QP1 may exceed 127 */
2133         max_wqe_allocated = min_t(u32, attrs->cap.max_send_wr + 1,
2134                                 dev->attr.max_wqe);
2135
2136         status = ocrdma_build_q_conf(&max_wqe_allocated,
2137                 dev->attr.wqe_size, &hw_pages, &hw_page_size);
2138         if (status) {
2139                 pr_err("%s() req. max_send_wr=0x%x\n", __func__,
2140                        max_wqe_allocated);
2141                 return -EINVAL;
2142         }
2143         qp->sq.max_cnt = max_wqe_allocated;
2144         len = (hw_pages * hw_page_size);
2145
2146         qp->sq.va = dma_alloc_coherent(&pdev->dev, len, &pa, GFP_KERNEL);
2147         if (!qp->sq.va)
2148                 return -EINVAL;
2149         memset(qp->sq.va, 0, len);
2150         qp->sq.len = len;
2151         qp->sq.pa = pa;
2152         qp->sq.entry_size = dev->attr.wqe_size;
2153         ocrdma_build_q_pages(&cmd->wq_addr[0], hw_pages, pa, hw_page_size);
2154
2155         cmd->type_pgsz_pdn |= (ilog2(hw_page_size / OCRDMA_MIN_Q_PAGE_SIZE)
2156                                 << OCRDMA_CREATE_QP_REQ_SQ_PAGE_SIZE_SHIFT);
2157         cmd->num_wq_rq_pages |= (hw_pages <<
2158                                  OCRDMA_CREATE_QP_REQ_NUM_WQ_PAGES_SHIFT) &
2159             OCRDMA_CREATE_QP_REQ_NUM_WQ_PAGES_MASK;
2160         cmd->max_sge_send_write |= (max_sges <<
2161                                     OCRDMA_CREATE_QP_REQ_MAX_SGE_SEND_SHIFT) &
2162             OCRDMA_CREATE_QP_REQ_MAX_SGE_SEND_MASK;
2163         cmd->max_sge_send_write |= (max_sges <<
2164                                     OCRDMA_CREATE_QP_REQ_MAX_SGE_WRITE_SHIFT) &
2165                                         OCRDMA_CREATE_QP_REQ_MAX_SGE_WRITE_MASK;
2166         cmd->max_wqe_rqe |= (ilog2(qp->sq.max_cnt) <<
2167                              OCRDMA_CREATE_QP_REQ_MAX_WQE_SHIFT) &
2168                                 OCRDMA_CREATE_QP_REQ_MAX_WQE_MASK;
2169         cmd->wqe_rqe_size |= (dev->attr.wqe_size <<
2170                               OCRDMA_CREATE_QP_REQ_WQE_SIZE_SHIFT) &
2171                                 OCRDMA_CREATE_QP_REQ_WQE_SIZE_MASK;
2172         return 0;
2173 }
2174
2175 static int ocrdma_set_create_qp_rq_cmd(struct ocrdma_create_qp_req *cmd,
2176                                         struct ib_qp_init_attr *attrs,
2177                                         struct ocrdma_qp *qp)
2178 {
2179         int status;
2180         u32 len, hw_pages, hw_page_size;
2181         dma_addr_t pa = 0;
2182         struct ocrdma_pd *pd = qp->pd;
2183         struct ocrdma_dev *dev = get_ocrdma_dev(pd->ibpd.device);
2184         struct pci_dev *pdev = dev->nic_info.pdev;
2185         u32 max_rqe_allocated = attrs->cap.max_recv_wr + 1;
2186
2187         status = ocrdma_build_q_conf(&max_rqe_allocated, dev->attr.rqe_size,
2188                                      &hw_pages, &hw_page_size);
2189         if (status) {
2190                 pr_err("%s() req. max_recv_wr=0x%x\n", __func__,
2191                        attrs->cap.max_recv_wr + 1);
2192                 return status;
2193         }
2194         qp->rq.max_cnt = max_rqe_allocated;
2195         len = (hw_pages * hw_page_size);
2196
2197         qp->rq.va = dma_alloc_coherent(&pdev->dev, len, &pa, GFP_KERNEL);
2198         if (!qp->rq.va)
2199                 return -ENOMEM;
2200         memset(qp->rq.va, 0, len);
2201         qp->rq.pa = pa;
2202         qp->rq.len = len;
2203         qp->rq.entry_size = dev->attr.rqe_size;
2204
2205         ocrdma_build_q_pages(&cmd->rq_addr[0], hw_pages, pa, hw_page_size);
2206         cmd->type_pgsz_pdn |= (ilog2(hw_page_size / OCRDMA_MIN_Q_PAGE_SIZE) <<
2207                 OCRDMA_CREATE_QP_REQ_RQ_PAGE_SIZE_SHIFT);
2208         cmd->num_wq_rq_pages |=
2209             (hw_pages << OCRDMA_CREATE_QP_REQ_NUM_RQ_PAGES_SHIFT) &
2210             OCRDMA_CREATE_QP_REQ_NUM_RQ_PAGES_MASK;
2211         cmd->max_sge_recv_flags |= (attrs->cap.max_recv_sge <<
2212                                 OCRDMA_CREATE_QP_REQ_MAX_SGE_RECV_SHIFT) &
2213                                 OCRDMA_CREATE_QP_REQ_MAX_SGE_RECV_MASK;
2214         cmd->max_wqe_rqe |= (ilog2(qp->rq.max_cnt) <<
2215                                 OCRDMA_CREATE_QP_REQ_MAX_RQE_SHIFT) &
2216                                 OCRDMA_CREATE_QP_REQ_MAX_RQE_MASK;
2217         cmd->wqe_rqe_size |= (dev->attr.rqe_size <<
2218                         OCRDMA_CREATE_QP_REQ_RQE_SIZE_SHIFT) &
2219                         OCRDMA_CREATE_QP_REQ_RQE_SIZE_MASK;
2220         return 0;
2221 }
2222
2223 static void ocrdma_set_create_qp_dpp_cmd(struct ocrdma_create_qp_req *cmd,
2224                                          struct ocrdma_pd *pd,
2225                                          struct ocrdma_qp *qp,
2226                                          u8 enable_dpp_cq, u16 dpp_cq_id)
2227 {
2228         pd->num_dpp_qp--;
2229         qp->dpp_enabled = true;
2230         cmd->max_sge_recv_flags |= OCRDMA_CREATE_QP_REQ_ENABLE_DPP_MASK;
2231         if (!enable_dpp_cq)
2232                 return;
2233         cmd->max_sge_recv_flags |= OCRDMA_CREATE_QP_REQ_ENABLE_DPP_MASK;
2234         cmd->dpp_credits_cqid = dpp_cq_id;
2235         cmd->dpp_credits_cqid |= OCRDMA_CREATE_QP_REQ_DPP_CREDIT_LIMIT <<
2236                                         OCRDMA_CREATE_QP_REQ_DPP_CREDIT_SHIFT;
2237 }
2238
2239 static int ocrdma_set_create_qp_ird_cmd(struct ocrdma_create_qp_req *cmd,
2240                                         struct ocrdma_qp *qp)
2241 {
2242         struct ocrdma_pd *pd = qp->pd;
2243         struct ocrdma_dev *dev = get_ocrdma_dev(pd->ibpd.device);
2244         struct pci_dev *pdev = dev->nic_info.pdev;
2245         dma_addr_t pa = 0;
2246         int ird_page_size = dev->attr.ird_page_size;
2247         int ird_q_len = dev->attr.num_ird_pages * ird_page_size;
2248         struct ocrdma_hdr_wqe *rqe;
2249         int i  = 0;
2250
2251         if (dev->attr.ird == 0)
2252                 return 0;
2253
2254         qp->ird_q_va = dma_alloc_coherent(&pdev->dev, ird_q_len,
2255                                         &pa, GFP_KERNEL);
2256         if (!qp->ird_q_va)
2257                 return -ENOMEM;
2258         memset(qp->ird_q_va, 0, ird_q_len);
2259         ocrdma_build_q_pages(&cmd->ird_addr[0], dev->attr.num_ird_pages,
2260                              pa, ird_page_size);
2261         for (; i < ird_q_len / dev->attr.rqe_size; i++) {
2262                 rqe = (struct ocrdma_hdr_wqe *)(qp->ird_q_va +
2263                         (i * dev->attr.rqe_size));
2264                 rqe->cw = 0;
2265                 rqe->cw |= 2;
2266                 rqe->cw |= (OCRDMA_TYPE_LKEY << OCRDMA_WQE_TYPE_SHIFT);
2267                 rqe->cw |= (8 << OCRDMA_WQE_SIZE_SHIFT);
2268                 rqe->cw |= (8 << OCRDMA_WQE_NXT_WQE_SIZE_SHIFT);
2269         }
2270         return 0;
2271 }
2272
2273 static void ocrdma_get_create_qp_rsp(struct ocrdma_create_qp_rsp *rsp,
2274                                      struct ocrdma_qp *qp,
2275                                      struct ib_qp_init_attr *attrs,
2276                                      u16 *dpp_offset, u16 *dpp_credit_lmt)
2277 {
2278         u32 max_wqe_allocated, max_rqe_allocated;
2279         qp->id = rsp->qp_id & OCRDMA_CREATE_QP_RSP_QP_ID_MASK;
2280         qp->rq.dbid = rsp->sq_rq_id & OCRDMA_CREATE_QP_RSP_RQ_ID_MASK;
2281         qp->sq.dbid = rsp->sq_rq_id >> OCRDMA_CREATE_QP_RSP_SQ_ID_SHIFT;
2282         qp->max_ird = rsp->max_ord_ird & OCRDMA_CREATE_QP_RSP_MAX_IRD_MASK;
2283         qp->max_ord = (rsp->max_ord_ird >> OCRDMA_CREATE_QP_RSP_MAX_ORD_SHIFT);
2284         qp->dpp_enabled = false;
2285         if (rsp->dpp_response & OCRDMA_CREATE_QP_RSP_DPP_ENABLED_MASK) {
2286                 qp->dpp_enabled = true;
2287                 *dpp_credit_lmt = (rsp->dpp_response &
2288                                 OCRDMA_CREATE_QP_RSP_DPP_CREDITS_MASK) >>
2289                                 OCRDMA_CREATE_QP_RSP_DPP_CREDITS_SHIFT;
2290                 *dpp_offset = (rsp->dpp_response &
2291                                 OCRDMA_CREATE_QP_RSP_DPP_PAGE_OFFSET_MASK) >>
2292                                 OCRDMA_CREATE_QP_RSP_DPP_PAGE_OFFSET_SHIFT;
2293         }
2294         max_wqe_allocated =
2295                 rsp->max_wqe_rqe >> OCRDMA_CREATE_QP_RSP_MAX_WQE_SHIFT;
2296         max_wqe_allocated = 1 << max_wqe_allocated;
2297         max_rqe_allocated = 1 << ((u16)rsp->max_wqe_rqe);
2298
2299         qp->sq.max_cnt = max_wqe_allocated;
2300         qp->sq.max_wqe_idx = max_wqe_allocated - 1;
2301
2302         if (!attrs->srq) {
2303                 qp->rq.max_cnt = max_rqe_allocated;
2304                 qp->rq.max_wqe_idx = max_rqe_allocated - 1;
2305         }
2306 }
2307
2308 int ocrdma_mbx_create_qp(struct ocrdma_qp *qp, struct ib_qp_init_attr *attrs,
2309                          u8 enable_dpp_cq, u16 dpp_cq_id, u16 *dpp_offset,
2310                          u16 *dpp_credit_lmt)
2311 {
2312         int status = -ENOMEM;
2313         u32 flags = 0;
2314         struct ocrdma_pd *pd = qp->pd;
2315         struct ocrdma_dev *dev = get_ocrdma_dev(pd->ibpd.device);
2316         struct pci_dev *pdev = dev->nic_info.pdev;
2317         struct ocrdma_cq *cq;
2318         struct ocrdma_create_qp_req *cmd;
2319         struct ocrdma_create_qp_rsp *rsp;
2320         int qptype;
2321
2322         switch (attrs->qp_type) {
2323         case IB_QPT_GSI:
2324                 qptype = OCRDMA_QPT_GSI;
2325                 break;
2326         case IB_QPT_RC:
2327                 qptype = OCRDMA_QPT_RC;
2328                 break;
2329         case IB_QPT_UD:
2330                 qptype = OCRDMA_QPT_UD;
2331                 break;
2332         default:
2333                 return -EINVAL;
2334         }
2335
2336         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_CREATE_QP, sizeof(*cmd));
2337         if (!cmd)
2338                 return status;
2339         cmd->type_pgsz_pdn |= (qptype << OCRDMA_CREATE_QP_REQ_QPT_SHIFT) &
2340                                                 OCRDMA_CREATE_QP_REQ_QPT_MASK;
2341         status = ocrdma_set_create_qp_sq_cmd(cmd, attrs, qp);
2342         if (status)
2343                 goto sq_err;
2344
2345         if (attrs->srq) {
2346                 struct ocrdma_srq *srq = get_ocrdma_srq(attrs->srq);
2347                 cmd->max_sge_recv_flags |= OCRDMA_CREATE_QP_REQ_USE_SRQ_MASK;
2348                 cmd->rq_addr[0].lo = srq->id;
2349                 qp->srq = srq;
2350         } else {
2351                 status = ocrdma_set_create_qp_rq_cmd(cmd, attrs, qp);
2352                 if (status)
2353                         goto rq_err;
2354         }
2355
2356         status = ocrdma_set_create_qp_ird_cmd(cmd, qp);
2357         if (status)
2358                 goto mbx_err;
2359
2360         cmd->type_pgsz_pdn |= (pd->id << OCRDMA_CREATE_QP_REQ_PD_ID_SHIFT) &
2361                                 OCRDMA_CREATE_QP_REQ_PD_ID_MASK;
2362
2363         flags = ocrdma_set_create_qp_mbx_access_flags(qp);
2364
2365         cmd->max_sge_recv_flags |= flags;
2366         cmd->max_ord_ird |= (dev->attr.max_ord_per_qp <<
2367                              OCRDMA_CREATE_QP_REQ_MAX_ORD_SHIFT) &
2368                                 OCRDMA_CREATE_QP_REQ_MAX_ORD_MASK;
2369         cmd->max_ord_ird |= (dev->attr.max_ird_per_qp <<
2370                              OCRDMA_CREATE_QP_REQ_MAX_IRD_SHIFT) &
2371                                 OCRDMA_CREATE_QP_REQ_MAX_IRD_MASK;
2372         cq = get_ocrdma_cq(attrs->send_cq);
2373         cmd->wq_rq_cqid |= (cq->id << OCRDMA_CREATE_QP_REQ_WQ_CQID_SHIFT) &
2374                                 OCRDMA_CREATE_QP_REQ_WQ_CQID_MASK;
2375         qp->sq_cq = cq;
2376         cq = get_ocrdma_cq(attrs->recv_cq);
2377         cmd->wq_rq_cqid |= (cq->id << OCRDMA_CREATE_QP_REQ_RQ_CQID_SHIFT) &
2378                                 OCRDMA_CREATE_QP_REQ_RQ_CQID_MASK;
2379         qp->rq_cq = cq;
2380
2381         if (pd->dpp_enabled && attrs->cap.max_inline_data && pd->num_dpp_qp &&
2382             (attrs->cap.max_inline_data <= dev->attr.max_inline_data)) {
2383                 ocrdma_set_create_qp_dpp_cmd(cmd, pd, qp, enable_dpp_cq,
2384                                              dpp_cq_id);
2385         }
2386
2387         status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
2388         if (status)
2389                 goto mbx_err;
2390         rsp = (struct ocrdma_create_qp_rsp *)cmd;
2391         ocrdma_get_create_qp_rsp(rsp, qp, attrs, dpp_offset, dpp_credit_lmt);
2392         qp->state = OCRDMA_QPS_RST;
2393         kfree(cmd);
2394         return 0;
2395 mbx_err:
2396         if (qp->rq.va)
2397                 dma_free_coherent(&pdev->dev, qp->rq.len, qp->rq.va, qp->rq.pa);
2398 rq_err:
2399         pr_err("%s(%d) rq_err\n", __func__, dev->id);
2400         dma_free_coherent(&pdev->dev, qp->sq.len, qp->sq.va, qp->sq.pa);
2401 sq_err:
2402         pr_err("%s(%d) sq_err\n", __func__, dev->id);
2403         kfree(cmd);
2404         return status;
2405 }
2406
2407 int ocrdma_mbx_query_qp(struct ocrdma_dev *dev, struct ocrdma_qp *qp,
2408                         struct ocrdma_qp_params *param)
2409 {
2410         int status = -ENOMEM;
2411         struct ocrdma_query_qp *cmd;
2412         struct ocrdma_query_qp_rsp *rsp;
2413
2414         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_QUERY_QP, sizeof(*rsp));
2415         if (!cmd)
2416                 return status;
2417         cmd->qp_id = qp->id;
2418         status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
2419         if (status)
2420                 goto mbx_err;
2421         rsp = (struct ocrdma_query_qp_rsp *)cmd;
2422         memcpy(param, &rsp->params, sizeof(struct ocrdma_qp_params));
2423 mbx_err:
2424         kfree(cmd);
2425         return status;
2426 }
2427
2428 static int ocrdma_set_av_params(struct ocrdma_qp *qp,
2429                                 struct ocrdma_modify_qp *cmd,
2430                                 struct ib_qp_attr *attrs,
2431                                 int attr_mask)
2432 {
2433         int status;
2434         struct ib_ah_attr *ah_attr = &attrs->ah_attr;
2435         union ib_gid sgid, zgid;
2436         u32 vlan_id = 0xFFFF;
2437         u8 mac_addr[6];
2438         struct ocrdma_dev *dev = get_ocrdma_dev(qp->ibqp.device);
2439
2440         if ((ah_attr->ah_flags & IB_AH_GRH) == 0)
2441                 return -EINVAL;
2442         if (atomic_cmpxchg(&dev->update_sl, 1, 0))
2443                 ocrdma_init_service_level(dev);
2444         cmd->params.tclass_sq_psn |=
2445             (ah_attr->grh.traffic_class << OCRDMA_QP_PARAMS_TCLASS_SHIFT);
2446         cmd->params.rnt_rc_sl_fl |=
2447             (ah_attr->grh.flow_label & OCRDMA_QP_PARAMS_FLOW_LABEL_MASK);
2448         cmd->params.rnt_rc_sl_fl |= (ah_attr->sl << OCRDMA_QP_PARAMS_SL_SHIFT);
2449         cmd->params.hop_lmt_rq_psn |=
2450             (ah_attr->grh.hop_limit << OCRDMA_QP_PARAMS_HOP_LMT_SHIFT);
2451         cmd->flags |= OCRDMA_QP_PARA_FLOW_LBL_VALID;
2452         memcpy(&cmd->params.dgid[0], &ah_attr->grh.dgid.raw[0],
2453                sizeof(cmd->params.dgid));
2454         status = ocrdma_query_gid(&dev->ibdev, 1,
2455                         ah_attr->grh.sgid_index, &sgid);
2456         if (status)
2457                 return status;
2458
2459         memset(&zgid, 0, sizeof(zgid));
2460         if (!memcmp(&sgid, &zgid, sizeof(zgid)))
2461                 return -EINVAL;
2462
2463         qp->sgid_idx = ah_attr->grh.sgid_index;
2464         memcpy(&cmd->params.sgid[0], &sgid.raw[0], sizeof(cmd->params.sgid));
2465         status = ocrdma_resolve_dmac(dev, ah_attr, &mac_addr[0]);
2466         if (status)
2467                 return status;
2468         cmd->params.dmac_b0_to_b3 = mac_addr[0] | (mac_addr[1] << 8) |
2469                                 (mac_addr[2] << 16) | (mac_addr[3] << 24);
2470         /* convert them to LE format. */
2471         ocrdma_cpu_to_le32(&cmd->params.dgid[0], sizeof(cmd->params.dgid));
2472         ocrdma_cpu_to_le32(&cmd->params.sgid[0], sizeof(cmd->params.sgid));
2473         cmd->params.vlan_dmac_b4_to_b5 = mac_addr[4] | (mac_addr[5] << 8);
2474         if (attr_mask & IB_QP_VID) {
2475                 vlan_id = attrs->vlan_id;
2476         } else if (dev->pfc_state) {
2477                 vlan_id = 0;
2478                 pr_err("ocrdma%d:Using VLAN with PFC is recommended\n",
2479                         dev->id);
2480                 pr_err("ocrdma%d:Using VLAN 0 for this connection\n",
2481                         dev->id);
2482         }
2483
2484         if (vlan_id < 0x1000) {
2485                 cmd->params.vlan_dmac_b4_to_b5 |=
2486                     vlan_id << OCRDMA_QP_PARAMS_VLAN_SHIFT;
2487                 cmd->flags |= OCRDMA_QP_PARA_VLAN_EN_VALID;
2488                 cmd->params.rnt_rc_sl_fl |=
2489                         (dev->sl & 0x07) << OCRDMA_QP_PARAMS_SL_SHIFT;
2490         }
2491
2492         return 0;
2493 }
2494
2495 static int ocrdma_set_qp_params(struct ocrdma_qp *qp,
2496                                 struct ocrdma_modify_qp *cmd,
2497                                 struct ib_qp_attr *attrs, int attr_mask)
2498 {
2499         int status = 0;
2500         struct ocrdma_dev *dev = get_ocrdma_dev(qp->ibqp.device);
2501
2502         if (attr_mask & IB_QP_PKEY_INDEX) {
2503                 cmd->params.path_mtu_pkey_indx |= (attrs->pkey_index &
2504                                             OCRDMA_QP_PARAMS_PKEY_INDEX_MASK);
2505                 cmd->flags |= OCRDMA_QP_PARA_PKEY_VALID;
2506         }
2507         if (attr_mask & IB_QP_QKEY) {
2508                 qp->qkey = attrs->qkey;
2509                 cmd->params.qkey = attrs->qkey;
2510                 cmd->flags |= OCRDMA_QP_PARA_QKEY_VALID;
2511         }
2512         if (attr_mask & IB_QP_AV) {
2513                 status = ocrdma_set_av_params(qp, cmd, attrs, attr_mask);
2514                 if (status)
2515                         return status;
2516         } else if (qp->qp_type == IB_QPT_GSI || qp->qp_type == IB_QPT_UD) {
2517                 /* set the default mac address for UD, GSI QPs */
2518                 cmd->params.dmac_b0_to_b3 = dev->nic_info.mac_addr[0] |
2519                         (dev->nic_info.mac_addr[1] << 8) |
2520                         (dev->nic_info.mac_addr[2] << 16) |
2521                         (dev->nic_info.mac_addr[3] << 24);
2522                 cmd->params.vlan_dmac_b4_to_b5 = dev->nic_info.mac_addr[4] |
2523                                         (dev->nic_info.mac_addr[5] << 8);
2524         }
2525         if ((attr_mask & IB_QP_EN_SQD_ASYNC_NOTIFY) &&
2526             attrs->en_sqd_async_notify) {
2527                 cmd->params.max_sge_recv_flags |=
2528                         OCRDMA_QP_PARAMS_FLAGS_SQD_ASYNC;
2529                 cmd->flags |= OCRDMA_QP_PARA_DST_QPN_VALID;
2530         }
2531         if (attr_mask & IB_QP_DEST_QPN) {
2532                 cmd->params.ack_to_rnr_rtc_dest_qpn |= (attrs->dest_qp_num &
2533                                 OCRDMA_QP_PARAMS_DEST_QPN_MASK);
2534                 cmd->flags |= OCRDMA_QP_PARA_DST_QPN_VALID;
2535         }
2536         if (attr_mask & IB_QP_PATH_MTU) {
2537                 if (attrs->path_mtu < IB_MTU_512 ||
2538                     attrs->path_mtu > IB_MTU_4096) {
2539                         pr_err("ocrdma%d: IB MTU %d is not supported\n",
2540                                dev->id, ib_mtu_enum_to_int(attrs->path_mtu));
2541                         status = -EINVAL;
2542                         goto pmtu_err;
2543                 }
2544                 cmd->params.path_mtu_pkey_indx |=
2545                     (ib_mtu_enum_to_int(attrs->path_mtu) <<
2546                      OCRDMA_QP_PARAMS_PATH_MTU_SHIFT) &
2547                     OCRDMA_QP_PARAMS_PATH_MTU_MASK;
2548                 cmd->flags |= OCRDMA_QP_PARA_PMTU_VALID;
2549         }
2550         if (attr_mask & IB_QP_TIMEOUT) {
2551                 cmd->params.ack_to_rnr_rtc_dest_qpn |= attrs->timeout <<
2552                     OCRDMA_QP_PARAMS_ACK_TIMEOUT_SHIFT;
2553                 cmd->flags |= OCRDMA_QP_PARA_ACK_TO_VALID;
2554         }
2555         if (attr_mask & IB_QP_RETRY_CNT) {
2556                 cmd->params.rnt_rc_sl_fl |= (attrs->retry_cnt <<
2557                                       OCRDMA_QP_PARAMS_RETRY_CNT_SHIFT) &
2558                     OCRDMA_QP_PARAMS_RETRY_CNT_MASK;
2559                 cmd->flags |= OCRDMA_QP_PARA_RETRY_CNT_VALID;
2560         }
2561         if (attr_mask & IB_QP_MIN_RNR_TIMER) {
2562                 cmd->params.rnt_rc_sl_fl |= (attrs->min_rnr_timer <<
2563                                       OCRDMA_QP_PARAMS_RNR_NAK_TIMER_SHIFT) &
2564                     OCRDMA_QP_PARAMS_RNR_NAK_TIMER_MASK;
2565                 cmd->flags |= OCRDMA_QP_PARA_RNT_VALID;
2566         }
2567         if (attr_mask & IB_QP_RNR_RETRY) {
2568                 cmd->params.ack_to_rnr_rtc_dest_qpn |= (attrs->rnr_retry <<
2569                         OCRDMA_QP_PARAMS_RNR_RETRY_CNT_SHIFT)
2570                         & OCRDMA_QP_PARAMS_RNR_RETRY_CNT_MASK;
2571                 cmd->flags |= OCRDMA_QP_PARA_RRC_VALID;
2572         }
2573         if (attr_mask & IB_QP_SQ_PSN) {
2574                 cmd->params.tclass_sq_psn |= (attrs->sq_psn & 0x00ffffff);
2575                 cmd->flags |= OCRDMA_QP_PARA_SQPSN_VALID;
2576         }
2577         if (attr_mask & IB_QP_RQ_PSN) {
2578                 cmd->params.hop_lmt_rq_psn |= (attrs->rq_psn & 0x00ffffff);
2579                 cmd->flags |= OCRDMA_QP_PARA_RQPSN_VALID;
2580         }
2581         if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC) {
2582                 if (attrs->max_rd_atomic > dev->attr.max_ord_per_qp) {
2583                         status = -EINVAL;
2584                         goto pmtu_err;
2585                 }
2586                 qp->max_ord = attrs->max_rd_atomic;
2587                 cmd->flags |= OCRDMA_QP_PARA_MAX_ORD_VALID;
2588         }
2589         if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) {
2590                 if (attrs->max_dest_rd_atomic > dev->attr.max_ird_per_qp) {
2591                         status = -EINVAL;
2592                         goto pmtu_err;
2593                 }
2594                 qp->max_ird = attrs->max_dest_rd_atomic;
2595                 cmd->flags |= OCRDMA_QP_PARA_MAX_IRD_VALID;
2596         }
2597         cmd->params.max_ord_ird = (qp->max_ord <<
2598                                 OCRDMA_QP_PARAMS_MAX_ORD_SHIFT) |
2599                                 (qp->max_ird & OCRDMA_QP_PARAMS_MAX_IRD_MASK);
2600 pmtu_err:
2601         return status;
2602 }
2603
2604 int ocrdma_mbx_modify_qp(struct ocrdma_dev *dev, struct ocrdma_qp *qp,
2605                          struct ib_qp_attr *attrs, int attr_mask)
2606 {
2607         int status = -ENOMEM;
2608         struct ocrdma_modify_qp *cmd;
2609
2610         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_MODIFY_QP, sizeof(*cmd));
2611         if (!cmd)
2612                 return status;
2613
2614         cmd->params.id = qp->id;
2615         cmd->flags = 0;
2616         if (attr_mask & IB_QP_STATE) {
2617                 cmd->params.max_sge_recv_flags |=
2618                     (get_ocrdma_qp_state(attrs->qp_state) <<
2619                      OCRDMA_QP_PARAMS_STATE_SHIFT) &
2620                     OCRDMA_QP_PARAMS_STATE_MASK;
2621                 cmd->flags |= OCRDMA_QP_PARA_QPS_VALID;
2622         } else {
2623                 cmd->params.max_sge_recv_flags |=
2624                     (qp->state << OCRDMA_QP_PARAMS_STATE_SHIFT) &
2625                     OCRDMA_QP_PARAMS_STATE_MASK;
2626         }
2627
2628         status = ocrdma_set_qp_params(qp, cmd, attrs, attr_mask);
2629         if (status)
2630                 goto mbx_err;
2631         status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
2632         if (status)
2633                 goto mbx_err;
2634
2635 mbx_err:
2636         kfree(cmd);
2637         return status;
2638 }
2639
2640 int ocrdma_mbx_destroy_qp(struct ocrdma_dev *dev, struct ocrdma_qp *qp)
2641 {
2642         int status = -ENOMEM;
2643         struct ocrdma_destroy_qp *cmd;
2644         struct pci_dev *pdev = dev->nic_info.pdev;
2645
2646         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DELETE_QP, sizeof(*cmd));
2647         if (!cmd)
2648                 return status;
2649         cmd->qp_id = qp->id;
2650         status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
2651         if (status)
2652                 goto mbx_err;
2653
2654 mbx_err:
2655         kfree(cmd);
2656         if (qp->sq.va)
2657                 dma_free_coherent(&pdev->dev, qp->sq.len, qp->sq.va, qp->sq.pa);
2658         if (!qp->srq && qp->rq.va)
2659                 dma_free_coherent(&pdev->dev, qp->rq.len, qp->rq.va, qp->rq.pa);
2660         if (qp->dpp_enabled)
2661                 qp->pd->num_dpp_qp++;
2662         return status;
2663 }
2664
2665 int ocrdma_mbx_create_srq(struct ocrdma_dev *dev, struct ocrdma_srq *srq,
2666                           struct ib_srq_init_attr *srq_attr,
2667                           struct ocrdma_pd *pd)
2668 {
2669         int status = -ENOMEM;
2670         int hw_pages, hw_page_size;
2671         int len;
2672         struct ocrdma_create_srq_rsp *rsp;
2673         struct ocrdma_create_srq *cmd;
2674         dma_addr_t pa;
2675         struct pci_dev *pdev = dev->nic_info.pdev;
2676         u32 max_rqe_allocated;
2677
2678         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_CREATE_SRQ, sizeof(*cmd));
2679         if (!cmd)
2680                 return status;
2681
2682         cmd->pgsz_pdid = pd->id & OCRDMA_CREATE_SRQ_PD_ID_MASK;
2683         max_rqe_allocated = srq_attr->attr.max_wr + 1;
2684         status = ocrdma_build_q_conf(&max_rqe_allocated,
2685                                 dev->attr.rqe_size,
2686                                 &hw_pages, &hw_page_size);
2687         if (status) {
2688                 pr_err("%s() req. max_wr=0x%x\n", __func__,
2689                        srq_attr->attr.max_wr);
2690                 status = -EINVAL;
2691                 goto ret;
2692         }
2693         len = hw_pages * hw_page_size;
2694         srq->rq.va = dma_alloc_coherent(&pdev->dev, len, &pa, GFP_KERNEL);
2695         if (!srq->rq.va) {
2696                 status = -ENOMEM;
2697                 goto ret;
2698         }
2699         ocrdma_build_q_pages(&cmd->rq_addr[0], hw_pages, pa, hw_page_size);
2700
2701         srq->rq.entry_size = dev->attr.rqe_size;
2702         srq->rq.pa = pa;
2703         srq->rq.len = len;
2704         srq->rq.max_cnt = max_rqe_allocated;
2705
2706         cmd->max_sge_rqe = ilog2(max_rqe_allocated);
2707         cmd->max_sge_rqe |= srq_attr->attr.max_sge <<
2708                                 OCRDMA_CREATE_SRQ_MAX_SGE_RECV_SHIFT;
2709
2710         cmd->pgsz_pdid |= (ilog2(hw_page_size / OCRDMA_MIN_Q_PAGE_SIZE)
2711                 << OCRDMA_CREATE_SRQ_PG_SZ_SHIFT);
2712         cmd->pages_rqe_sz |= (dev->attr.rqe_size
2713                 << OCRDMA_CREATE_SRQ_RQE_SIZE_SHIFT)
2714                 & OCRDMA_CREATE_SRQ_RQE_SIZE_MASK;
2715         cmd->pages_rqe_sz |= hw_pages << OCRDMA_CREATE_SRQ_NUM_RQ_PAGES_SHIFT;
2716
2717         status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
2718         if (status)
2719                 goto mbx_err;
2720         rsp = (struct ocrdma_create_srq_rsp *)cmd;
2721         srq->id = rsp->id;
2722         srq->rq.dbid = rsp->id;
2723         max_rqe_allocated = ((rsp->max_sge_rqe_allocated &
2724                 OCRDMA_CREATE_SRQ_RSP_MAX_RQE_ALLOCATED_MASK) >>
2725                 OCRDMA_CREATE_SRQ_RSP_MAX_RQE_ALLOCATED_SHIFT);
2726         max_rqe_allocated = (1 << max_rqe_allocated);
2727         srq->rq.max_cnt = max_rqe_allocated;
2728         srq->rq.max_wqe_idx = max_rqe_allocated - 1;
2729         srq->rq.max_sges = (rsp->max_sge_rqe_allocated &
2730                 OCRDMA_CREATE_SRQ_RSP_MAX_SGE_RECV_ALLOCATED_MASK) >>
2731                 OCRDMA_CREATE_SRQ_RSP_MAX_SGE_RECV_ALLOCATED_SHIFT;
2732         goto ret;
2733 mbx_err:
2734         dma_free_coherent(&pdev->dev, srq->rq.len, srq->rq.va, pa);
2735 ret:
2736         kfree(cmd);
2737         return status;
2738 }
2739
2740 int ocrdma_mbx_modify_srq(struct ocrdma_srq *srq, struct ib_srq_attr *srq_attr)
2741 {
2742         int status = -ENOMEM;
2743         struct ocrdma_modify_srq *cmd;
2744         struct ocrdma_pd *pd = srq->pd;
2745         struct ocrdma_dev *dev = get_ocrdma_dev(pd->ibpd.device);
2746
2747         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_MODIFY_SRQ, sizeof(*cmd));
2748         if (!cmd)
2749                 return status;
2750         cmd->id = srq->id;
2751         cmd->limit_max_rqe |= srq_attr->srq_limit <<
2752             OCRDMA_MODIFY_SRQ_LIMIT_SHIFT;
2753         status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
2754         kfree(cmd);
2755         return status;
2756 }
2757
2758 int ocrdma_mbx_query_srq(struct ocrdma_srq *srq, struct ib_srq_attr *srq_attr)
2759 {
2760         int status = -ENOMEM;
2761         struct ocrdma_query_srq *cmd;
2762         struct ocrdma_dev *dev = get_ocrdma_dev(srq->ibsrq.device);
2763
2764         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_QUERY_SRQ, sizeof(*cmd));
2765         if (!cmd)
2766                 return status;
2767         cmd->id = srq->rq.dbid;
2768         status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
2769         if (status == 0) {
2770                 struct ocrdma_query_srq_rsp *rsp =
2771                     (struct ocrdma_query_srq_rsp *)cmd;
2772                 srq_attr->max_sge =
2773                     rsp->srq_lmt_max_sge &
2774                     OCRDMA_QUERY_SRQ_RSP_MAX_SGE_RECV_MASK;
2775                 srq_attr->max_wr =
2776                     rsp->max_rqe_pdid >> OCRDMA_QUERY_SRQ_RSP_MAX_RQE_SHIFT;
2777                 srq_attr->srq_limit = rsp->srq_lmt_max_sge >>
2778                     OCRDMA_QUERY_SRQ_RSP_SRQ_LIMIT_SHIFT;
2779         }
2780         kfree(cmd);
2781         return status;
2782 }
2783
2784 int ocrdma_mbx_destroy_srq(struct ocrdma_dev *dev, struct ocrdma_srq *srq)
2785 {
2786         int status = -ENOMEM;
2787         struct ocrdma_destroy_srq *cmd;
2788         struct pci_dev *pdev = dev->nic_info.pdev;
2789         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DELETE_SRQ, sizeof(*cmd));
2790         if (!cmd)
2791                 return status;
2792         cmd->id = srq->id;
2793         status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
2794         if (srq->rq.va)
2795                 dma_free_coherent(&pdev->dev, srq->rq.len,
2796                                   srq->rq.va, srq->rq.pa);
2797         kfree(cmd);
2798         return status;
2799 }
2800
2801 static int ocrdma_mbx_get_dcbx_config(struct ocrdma_dev *dev, u32 ptype,
2802                                       struct ocrdma_dcbx_cfg *dcbxcfg)
2803 {
2804         int status = 0;
2805         dma_addr_t pa;
2806         struct ocrdma_mqe cmd;
2807
2808         struct ocrdma_get_dcbx_cfg_req *req = NULL;
2809         struct ocrdma_get_dcbx_cfg_rsp *rsp = NULL;
2810         struct pci_dev *pdev = dev->nic_info.pdev;
2811         struct ocrdma_mqe_sge *mqe_sge = cmd.u.nonemb_req.sge;
2812
2813         memset(&cmd, 0, sizeof(struct ocrdma_mqe));
2814         cmd.hdr.pyld_len = max_t (u32, sizeof(struct ocrdma_get_dcbx_cfg_rsp),
2815                                         sizeof(struct ocrdma_get_dcbx_cfg_req));
2816         req = dma_alloc_coherent(&pdev->dev, cmd.hdr.pyld_len, &pa, GFP_KERNEL);
2817         if (!req) {
2818                 status = -ENOMEM;
2819                 goto mem_err;
2820         }
2821
2822         cmd.hdr.spcl_sge_cnt_emb |= (1 << OCRDMA_MQE_HDR_SGE_CNT_SHIFT) &
2823                                         OCRDMA_MQE_HDR_SGE_CNT_MASK;
2824         mqe_sge->pa_lo = (u32) (pa & 0xFFFFFFFFUL);
2825         mqe_sge->pa_hi = (u32) upper_32_bits(pa);
2826         mqe_sge->len = cmd.hdr.pyld_len;
2827
2828         memset(req, 0, sizeof(struct ocrdma_get_dcbx_cfg_req));
2829         ocrdma_init_mch(&req->hdr, OCRDMA_CMD_GET_DCBX_CONFIG,
2830                         OCRDMA_SUBSYS_DCBX, cmd.hdr.pyld_len);
2831         req->param_type = ptype;
2832
2833         status = ocrdma_mbx_cmd(dev, &cmd);
2834         if (status)
2835                 goto mbx_err;
2836
2837         rsp = (struct ocrdma_get_dcbx_cfg_rsp *)req;
2838         ocrdma_le32_to_cpu(rsp, sizeof(struct ocrdma_get_dcbx_cfg_rsp));
2839         memcpy(dcbxcfg, &rsp->cfg, sizeof(struct ocrdma_dcbx_cfg));
2840
2841 mbx_err:
2842         dma_free_coherent(&pdev->dev, cmd.hdr.pyld_len, req, pa);
2843 mem_err:
2844         return status;
2845 }
2846
2847 #define OCRDMA_MAX_SERVICE_LEVEL_INDEX  0x08
2848 #define OCRDMA_DEFAULT_SERVICE_LEVEL    0x05
2849
2850 static int ocrdma_parse_dcbxcfg_rsp(struct ocrdma_dev *dev, int ptype,
2851                                     struct ocrdma_dcbx_cfg *dcbxcfg,
2852                                     u8 *srvc_lvl)
2853 {
2854         int status = -EINVAL, indx, slindx;
2855         int ventry_cnt;
2856         struct ocrdma_app_parameter *app_param;
2857         u8 valid, proto_sel;
2858         u8 app_prio, pfc_prio;
2859         u16 proto;
2860
2861         if (!(dcbxcfg->tcv_aev_opv_st & OCRDMA_DCBX_STATE_MASK)) {
2862                 pr_info("%s ocrdma%d DCBX is disabled\n",
2863                         dev_name(&dev->nic_info.pdev->dev), dev->id);
2864                 goto out;
2865         }
2866
2867         if (!ocrdma_is_enabled_and_synced(dcbxcfg->pfc_state)) {
2868                 pr_info("%s ocrdma%d priority flow control(%s) is %s%s\n",
2869                         dev_name(&dev->nic_info.pdev->dev), dev->id,
2870                         (ptype > 0 ? "operational" : "admin"),
2871                         (dcbxcfg->pfc_state & OCRDMA_STATE_FLAG_ENABLED) ?
2872                         "enabled" : "disabled",
2873                         (dcbxcfg->pfc_state & OCRDMA_STATE_FLAG_SYNC) ?
2874                         "" : ", not sync'ed");
2875                 goto out;
2876         } else {
2877                 pr_info("%s ocrdma%d priority flow control is enabled and sync'ed\n",
2878                         dev_name(&dev->nic_info.pdev->dev), dev->id);
2879         }
2880
2881         ventry_cnt = (dcbxcfg->tcv_aev_opv_st >>
2882                                 OCRDMA_DCBX_APP_ENTRY_SHIFT)
2883                                 & OCRDMA_DCBX_STATE_MASK;
2884
2885         for (indx = 0; indx < ventry_cnt; indx++) {
2886                 app_param = &dcbxcfg->app_param[indx];
2887                 valid = (app_param->valid_proto_app >>
2888                                 OCRDMA_APP_PARAM_VALID_SHIFT)
2889                                 & OCRDMA_APP_PARAM_VALID_MASK;
2890                 proto_sel = (app_param->valid_proto_app
2891                                 >>  OCRDMA_APP_PARAM_PROTO_SEL_SHIFT)
2892                                 & OCRDMA_APP_PARAM_PROTO_SEL_MASK;
2893                 proto = app_param->valid_proto_app &
2894                                 OCRDMA_APP_PARAM_APP_PROTO_MASK;
2895
2896                 if (
2897                         valid && proto == OCRDMA_APP_PROTO_ROCE &&
2898                         proto_sel == OCRDMA_PROTO_SELECT_L2) {
2899                         for (slindx = 0; slindx <
2900                                 OCRDMA_MAX_SERVICE_LEVEL_INDEX; slindx++) {
2901                                 app_prio = ocrdma_get_app_prio(
2902                                                 (u8 *)app_param->app_prio,
2903                                                 slindx);
2904                                 pfc_prio = ocrdma_get_pfc_prio(
2905                                                 (u8 *)dcbxcfg->pfc_prio,
2906                                                 slindx);
2907
2908                                 if (app_prio && pfc_prio) {
2909                                         *srvc_lvl = slindx;
2910                                         status = 0;
2911                                         goto out;
2912                                 }
2913                         }
2914                         if (slindx == OCRDMA_MAX_SERVICE_LEVEL_INDEX) {
2915                                 pr_info("%s ocrdma%d application priority not set for 0x%x protocol\n",
2916                                         dev_name(&dev->nic_info.pdev->dev),
2917                                         dev->id, proto);
2918                         }
2919                 }
2920         }
2921
2922 out:
2923         return status;
2924 }
2925
2926 void ocrdma_init_service_level(struct ocrdma_dev *dev)
2927 {
2928         int status = 0, indx;
2929         struct ocrdma_dcbx_cfg dcbxcfg;
2930         u8 srvc_lvl = OCRDMA_DEFAULT_SERVICE_LEVEL;
2931         int ptype = OCRDMA_PARAMETER_TYPE_OPER;
2932
2933         for (indx = 0; indx < 2; indx++) {
2934                 status = ocrdma_mbx_get_dcbx_config(dev, ptype, &dcbxcfg);
2935                 if (status) {
2936                         pr_err("%s(): status=%d\n", __func__, status);
2937                         ptype = OCRDMA_PARAMETER_TYPE_ADMIN;
2938                         continue;
2939                 }
2940
2941                 status = ocrdma_parse_dcbxcfg_rsp(dev, ptype,
2942                                                   &dcbxcfg, &srvc_lvl);
2943                 if (status) {
2944                         ptype = OCRDMA_PARAMETER_TYPE_ADMIN;
2945                         continue;
2946                 }
2947
2948                 break;
2949         }
2950
2951         if (status)
2952                 pr_info("%s ocrdma%d service level default\n",
2953                         dev_name(&dev->nic_info.pdev->dev), dev->id);
2954         else
2955                 pr_info("%s ocrdma%d service level %d\n",
2956                         dev_name(&dev->nic_info.pdev->dev), dev->id,
2957                         srvc_lvl);
2958
2959         dev->pfc_state = ocrdma_is_enabled_and_synced(dcbxcfg.pfc_state);
2960         dev->sl = srvc_lvl;
2961 }
2962
2963 int ocrdma_alloc_av(struct ocrdma_dev *dev, struct ocrdma_ah *ah)
2964 {
2965         int i;
2966         int status = -EINVAL;
2967         struct ocrdma_av *av;
2968         unsigned long flags;
2969
2970         av = dev->av_tbl.va;
2971         spin_lock_irqsave(&dev->av_tbl.lock, flags);
2972         for (i = 0; i < dev->av_tbl.num_ah; i++) {
2973                 if (av->valid == 0) {
2974                         av->valid = OCRDMA_AV_VALID;
2975                         ah->av = av;
2976                         ah->id = i;
2977                         status = 0;
2978                         break;
2979                 }
2980                 av++;
2981         }
2982         if (i == dev->av_tbl.num_ah)
2983                 status = -EAGAIN;
2984         spin_unlock_irqrestore(&dev->av_tbl.lock, flags);
2985         return status;
2986 }
2987
2988 int ocrdma_free_av(struct ocrdma_dev *dev, struct ocrdma_ah *ah)
2989 {
2990         unsigned long flags;
2991         spin_lock_irqsave(&dev->av_tbl.lock, flags);
2992         ah->av->valid = 0;
2993         spin_unlock_irqrestore(&dev->av_tbl.lock, flags);
2994         return 0;
2995 }
2996
2997 static int ocrdma_create_eqs(struct ocrdma_dev *dev)
2998 {
2999         int num_eq, i, status = 0;
3000         int irq;
3001         unsigned long flags = 0;
3002
3003         num_eq = dev->nic_info.msix.num_vectors -
3004                         dev->nic_info.msix.start_vector;
3005         if (dev->nic_info.intr_mode == BE_INTERRUPT_MODE_INTX) {
3006                 num_eq = 1;
3007                 flags = IRQF_SHARED;
3008         } else {
3009                 num_eq = min_t(u32, num_eq, num_online_cpus());
3010         }
3011
3012         if (!num_eq)
3013                 return -EINVAL;
3014
3015         dev->eq_tbl = kzalloc(sizeof(struct ocrdma_eq) * num_eq, GFP_KERNEL);
3016         if (!dev->eq_tbl)
3017                 return -ENOMEM;
3018
3019         for (i = 0; i < num_eq; i++) {
3020                 status = ocrdma_create_eq(dev, &dev->eq_tbl[i],
3021                                         OCRDMA_EQ_LEN);
3022                 if (status) {
3023                         status = -EINVAL;
3024                         break;
3025                 }
3026                 sprintf(dev->eq_tbl[i].irq_name, "ocrdma%d-%d",
3027                         dev->id, i);
3028                 irq = ocrdma_get_irq(dev, &dev->eq_tbl[i]);
3029                 status = request_irq(irq, ocrdma_irq_handler, flags,
3030                                      dev->eq_tbl[i].irq_name,
3031                                      &dev->eq_tbl[i]);
3032                 if (status)
3033                         goto done;
3034                 dev->eq_cnt += 1;
3035         }
3036         /* one eq is sufficient for data path to work */
3037         return 0;
3038 done:
3039         ocrdma_destroy_eqs(dev);
3040         return status;
3041 }
3042
3043 static int ocrdma_mbx_modify_eqd(struct ocrdma_dev *dev, struct ocrdma_eq *eq,
3044                                  int num)
3045 {
3046         int i, status = -ENOMEM;
3047         struct ocrdma_modify_eqd_req *cmd;
3048
3049         cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_MODIFY_EQ_DELAY, sizeof(*cmd));
3050         if (!cmd)
3051                 return status;
3052
3053         ocrdma_init_mch(&cmd->cmd.req, OCRDMA_CMD_MODIFY_EQ_DELAY,
3054                         OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
3055
3056         cmd->cmd.num_eq = num;
3057         for (i = 0; i < num; i++) {
3058                 cmd->cmd.set_eqd[i].eq_id = eq[i].q.id;
3059                 cmd->cmd.set_eqd[i].phase = 0;
3060                 cmd->cmd.set_eqd[i].delay_multiplier =
3061                                 (eq[i].aic_obj.prev_eqd * 65)/100;
3062         }
3063         status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
3064         if (status)
3065                 goto mbx_err;
3066 mbx_err:
3067         kfree(cmd);
3068         return status;
3069 }
3070
3071 static int ocrdma_modify_eqd(struct ocrdma_dev *dev, struct ocrdma_eq *eq,
3072                              int num)
3073 {
3074         int num_eqs, i = 0;
3075         if (num > 8) {
3076                 while (num) {
3077                         num_eqs = min(num, 8);
3078                         ocrdma_mbx_modify_eqd(dev, &eq[i], num_eqs);
3079                         i += num_eqs;
3080                         num -= num_eqs;
3081                 }
3082         } else {
3083                 ocrdma_mbx_modify_eqd(dev, eq, num);
3084         }
3085         return 0;
3086 }
3087
3088 void ocrdma_eqd_set_task(struct work_struct *work)
3089 {
3090         struct ocrdma_dev *dev =
3091                 container_of(work, struct ocrdma_dev, eqd_work.work);
3092         struct ocrdma_eq *eq = 0;
3093         int i, num = 0, status = -EINVAL;
3094         u64 eq_intr;
3095
3096         for (i = 0; i < dev->eq_cnt; i++) {
3097                 eq = &dev->eq_tbl[i];
3098                 if (eq->aic_obj.eq_intr_cnt > eq->aic_obj.prev_eq_intr_cnt) {
3099                         eq_intr = eq->aic_obj.eq_intr_cnt -
3100                                   eq->aic_obj.prev_eq_intr_cnt;
3101                         if ((eq_intr > EQ_INTR_PER_SEC_THRSH_HI) &&
3102                             (eq->aic_obj.prev_eqd == EQ_AIC_MIN_EQD)) {
3103                                 eq->aic_obj.prev_eqd = EQ_AIC_MAX_EQD;
3104                                 num++;
3105                         } else if ((eq_intr < EQ_INTR_PER_SEC_THRSH_LOW) &&
3106                                    (eq->aic_obj.prev_eqd == EQ_AIC_MAX_EQD)) {
3107                                 eq->aic_obj.prev_eqd = EQ_AIC_MIN_EQD;
3108                                 num++;
3109                         }
3110                 }
3111                 eq->aic_obj.prev_eq_intr_cnt = eq->aic_obj.eq_intr_cnt;
3112         }
3113
3114         if (num)
3115                 status = ocrdma_modify_eqd(dev, &dev->eq_tbl[0], num);
3116         schedule_delayed_work(&dev->eqd_work, msecs_to_jiffies(1000));
3117 }
3118
3119 int ocrdma_init_hw(struct ocrdma_dev *dev)
3120 {
3121         int status;
3122
3123         /* create the eqs  */
3124         status = ocrdma_create_eqs(dev);
3125         if (status)
3126                 goto qpeq_err;
3127         status = ocrdma_create_mq(dev);
3128         if (status)
3129                 goto mq_err;
3130         status = ocrdma_mbx_query_fw_config(dev);
3131         if (status)
3132                 goto conf_err;
3133         status = ocrdma_mbx_query_dev(dev);
3134         if (status)
3135                 goto conf_err;
3136         status = ocrdma_mbx_query_fw_ver(dev);
3137         if (status)
3138                 goto conf_err;
3139         status = ocrdma_mbx_create_ah_tbl(dev);
3140         if (status)
3141                 goto conf_err;
3142         status = ocrdma_mbx_get_phy_info(dev);
3143         if (status)
3144                 goto info_attrb_err;
3145         status = ocrdma_mbx_get_ctrl_attribs(dev);
3146         if (status)
3147                 goto info_attrb_err;
3148
3149         return 0;
3150
3151 info_attrb_err:
3152         ocrdma_mbx_delete_ah_tbl(dev);
3153 conf_err:
3154         ocrdma_destroy_mq(dev);
3155 mq_err:
3156         ocrdma_destroy_eqs(dev);
3157 qpeq_err:
3158         pr_err("%s() status=%d\n", __func__, status);
3159         return status;
3160 }
3161
3162 void ocrdma_cleanup_hw(struct ocrdma_dev *dev)
3163 {
3164         ocrdma_free_pd_pool(dev);
3165         ocrdma_mbx_delete_ah_tbl(dev);
3166
3167         /* cleanup the control path */
3168         ocrdma_destroy_mq(dev);
3169
3170         /* cleanup the eqs */
3171         ocrdma_destroy_eqs(dev);
3172 }