drivers/infiniband/hw/nes/nes_verbs.c

   1 /*
   2  * Copyright (c) 2006 - 2011 Intel Corporation.  All rights reserved.
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and/or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  *
  32  */
  33
  34 #include <linux/module.h>
  35 #include <linux/moduleparam.h>
  36 #include <linux/random.h>
  37 #include <linux/highmem.h>
  38 #include <linux/slab.h>
  39 #include <asm/byteorder.h>
  40
  41 #include <rdma/ib_verbs.h>
  42 #include <rdma/iw_cm.h>
  43 #include <rdma/ib_user_verbs.h>
  44
  45 #include "nes.h"
  46
  47 #include <rdma/ib_umem.h>
  48
  49 atomic_t mod_qp_timouts;
  50 atomic_t qps_created;
  51 atomic_t sw_qps_destroyed;
  52
  53 static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev);
  54 static int nes_dereg_mr(struct ib_mr *ib_mr);
  55
  56 /**
  57  * nes_alloc_mw
  58  */
  59 static struct ib_mw *nes_alloc_mw(struct ib_pd *ibpd, enum ib_mw_type type,
  60                                   struct ib_udata *udata)
  61 {
  62         struct nes_pd *nespd = to_nespd(ibpd);
  63         struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
  64         struct nes_device *nesdev = nesvnic->nesdev;
  65         struct nes_adapter *nesadapter = nesdev->nesadapter;
  66         struct nes_cqp_request *cqp_request;
  67         struct nes_mr *nesmr;
  68         struct ib_mw *ibmw;
  69         struct nes_hw_cqp_wqe *cqp_wqe;
  70         int ret;
  71         u32 stag;
  72         u32 stag_index = 0;
  73         u32 next_stag_index = 0;
  74         u32 driver_key = 0;
  75         u8 stag_key = 0;
  76
  77         if (type != IB_MW_TYPE_1)
  78                 return ERR_PTR(-EINVAL);
  79
  80         get_random_bytes(&next_stag_index, sizeof(next_stag_index));
  81         stag_key = (u8)next_stag_index;
  82
  83         driver_key = 0;
  84
  85         next_stag_index >>= 8;
  86         next_stag_index %= nesadapter->max_mr;
  87
  88         ret = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
  89                         nesadapter->max_mr, &stag_index, &next_stag_index, NES_RESOURCE_MW);
  90         if (ret) {
  91                 return ERR_PTR(ret);
  92         }
  93
  94         nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
  95         if (!nesmr) {
  96                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
  97                 return ERR_PTR(-ENOMEM);
  98         }
  99
 100         stag = stag_index << 8;
 101         stag |= driver_key;
 102         stag += (u32)stag_key;
 103
 104         nes_debug(NES_DBG_MR, "Registering STag 0x%08X, index = 0x%08X\n",
 105                         stag, stag_index);
 106
 107         /* Register the region with the adapter */
 108         cqp_request = nes_get_cqp_request(nesdev);
 109         if (cqp_request == NULL) {
 110                 kfree(nesmr);
 111                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
 112                 return ERR_PTR(-ENOMEM);
 113         }
 114
 115         cqp_request->waiting = 1;
 116         cqp_wqe = &cqp_request->cqp_wqe;
 117
 118         cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] =
 119                         cpu_to_le32( NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_RIGHTS_REMOTE_READ |
 120                         NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_VA_TO |
 121                         NES_CQP_STAG_REM_ACC_EN);
 122
 123         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
 124         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX, (nespd->pd_id & 0x00007fff));
 125         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
 126
 127         atomic_set(&cqp_request->refcount, 2);
 128         nes_post_cqp_request(nesdev, cqp_request);
 129
 130         /* Wait for CQP */
 131         ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
 132                         NES_EVENT_TIMEOUT);
 133         nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
 134                         " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
 135                         stag, ret, cqp_request->major_code, cqp_request->minor_code);
 136         if ((!ret) || (cqp_request->major_code)) {
 137                 nes_put_cqp_request(nesdev, cqp_request);
 138                 kfree(nesmr);
 139                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
 140                 if (!ret) {
 141                         return ERR_PTR(-ETIME);
 142                 } else {
 143                         return ERR_PTR(-ENOMEM);
 144                 }
 145         }
 146         nes_put_cqp_request(nesdev, cqp_request);
 147
 148         nesmr->ibmw.rkey = stag;
 149         nesmr->mode = IWNES_MEMREG_TYPE_MW;
 150         ibmw = &nesmr->ibmw;
 151         nesmr->pbl_4k = 0;
 152         nesmr->pbls_used = 0;
 153
 154         return ibmw;
 155 }
 156
 157
 158 /**
 159  * nes_dealloc_mw
 160  */
 161 static int nes_dealloc_mw(struct ib_mw *ibmw)
 162 {
 163         struct nes_mr *nesmr = to_nesmw(ibmw);
 164         struct nes_vnic *nesvnic = to_nesvnic(ibmw->device);
 165         struct nes_device *nesdev = nesvnic->nesdev;
 166         struct nes_adapter *nesadapter = nesdev->nesadapter;
 167         struct nes_hw_cqp_wqe *cqp_wqe;
 168         struct nes_cqp_request *cqp_request;
 169         int err = 0;
 170         int ret;
 171
 172         /* Deallocate the window with the adapter */
 173         cqp_request = nes_get_cqp_request(nesdev);
 174         if (cqp_request == NULL) {
 175                 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
 176                 return -ENOMEM;
 177         }
 178         cqp_request->waiting = 1;
 179         cqp_wqe = &cqp_request->cqp_wqe;
 180         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
 181         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, NES_CQP_DEALLOCATE_STAG);
 182         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ibmw->rkey);
 183
 184         atomic_set(&cqp_request->refcount, 2);
 185         nes_post_cqp_request(nesdev, cqp_request);
 186
 187         /* Wait for CQP */
 188         nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X to complete.\n",
 189                         ibmw->rkey);
 190         ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
 191                         NES_EVENT_TIMEOUT);
 192         nes_debug(NES_DBG_MR, "Deallocate STag completed, wait_event_timeout ret = %u,"
 193                         " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
 194                         ret, cqp_request->major_code, cqp_request->minor_code);
 195         if (!ret)
 196                 err = -ETIME;
 197         else if (cqp_request->major_code)
 198                 err = -EIO;
 199
 200         nes_put_cqp_request(nesdev, cqp_request);
 201
 202         nes_free_resource(nesadapter, nesadapter->allocated_mrs,
 203                         (ibmw->rkey & 0x0fffff00) >> 8);
 204         kfree(nesmr);
 205
 206         return err;
 207 }
 208
 209
 210 /*
 211  * nes_alloc_fast_mr
 212  */
 213 static int alloc_fast_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd,
 214                              u32 stag, u32 page_count)
 215 {
 216         struct nes_hw_cqp_wqe *cqp_wqe;
 217         struct nes_cqp_request *cqp_request;
 218         unsigned long flags;
 219         int ret;
 220         struct nes_adapter *nesadapter = nesdev->nesadapter;
 221         u32 opcode = 0;
 222         u16 major_code;
 223         u64 region_length = page_count * PAGE_SIZE;
 224
 225
 226         cqp_request = nes_get_cqp_request(nesdev);
 227         if (cqp_request == NULL) {
 228                 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
 229                 return -ENOMEM;
 230         }
 231         nes_debug(NES_DBG_MR, "alloc_fast_reg_mr: page_count = %d, "
 232                               "region_length = %llu\n",
 233                               page_count, region_length);
 234         cqp_request->waiting = 1;
 235         cqp_wqe = &cqp_request->cqp_wqe;
 236
 237         spin_lock_irqsave(&nesadapter->pbl_lock, flags);
 238         if (nesadapter->free_4kpbl > 0) {
 239                 nesadapter->free_4kpbl--;
 240                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
 241         } else {
 242                 /* No 4kpbl's available: */
 243                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
 244                 nes_debug(NES_DBG_MR, "Out of Pbls\n");
 245                 nes_free_cqp_request(nesdev, cqp_request);
 246                 return -ENOMEM;
 247         }
 248
 249         opcode = NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_MR |
 250                  NES_CQP_STAG_PBL_BLK_SIZE | NES_CQP_STAG_VA_TO |
 251                  NES_CQP_STAG_REM_ACC_EN;
 252         /*
 253          * The current OFED API does not support the zero based TO option.
 254          * If added then need to changed the NES_CQP_STAG_VA* option.  Also,
 255          * the API does not support that ability to have the MR set for local
 256          * access only when created and not allow the SQ op to override. Given
 257          * this the remote enable must be set here.
 258          */
 259
 260         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
 261         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
 262         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, 1);
 263
 264         cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] =
 265                         cpu_to_le32((u32)(region_length >> 8) & 0xff000000);
 266         cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |=
 267                         cpu_to_le32(nespd->pd_id & 0x00007fff);
 268
 269         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
 270         set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, 0);
 271         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, 0);
 272         set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, 0);
 273         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX, (page_count * 8));
 274         cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE);
 275         barrier();
 276
 277         atomic_set(&cqp_request->refcount, 2);
 278         nes_post_cqp_request(nesdev, cqp_request);
 279
 280         /* Wait for CQP */
 281         ret = wait_event_timeout(cqp_request->waitq,
 282                                  (0 != cqp_request->request_done),
 283                                  NES_EVENT_TIMEOUT);
 284
 285         nes_debug(NES_DBG_MR, "Allocate STag 0x%08X completed, "
 286                   "wait_event_timeout ret = %u, CQP Major:Minor codes = "
 287                   "0x%04X:0x%04X.\n", stag, ret, cqp_request->major_code,
 288                   cqp_request->minor_code);
 289         major_code = cqp_request->major_code;
 290         nes_put_cqp_request(nesdev, cqp_request);
 291
 292         if (!ret || major_code) {
 293                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
 294                 nesadapter->free_4kpbl++;
 295                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
 296         }
 297
 298         if (!ret)
 299                 return -ETIME;
 300         else if (major_code)
 301                 return -EIO;
 302         return 0;
 303 }
 304
 305 /*
 306  * nes_alloc_mr
 307  */
 308 static struct ib_mr *nes_alloc_mr(struct ib_pd *ibpd,
 309                                   enum ib_mr_type mr_type,
 310                                   u32 max_num_sg)
 311 {
 312         struct nes_pd *nespd = to_nespd(ibpd);
 313         struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
 314         struct nes_device *nesdev = nesvnic->nesdev;
 315         struct nes_adapter *nesadapter = nesdev->nesadapter;
 316
 317         u32 next_stag_index;
 318         u8 stag_key = 0;
 319         u32 driver_key = 0;
 320         int err = 0;
 321         u32 stag_index = 0;
 322         struct nes_mr *nesmr;
 323         u32 stag;
 324         int ret;
 325         struct ib_mr *ibmr;
 326
 327         if (mr_type != IB_MR_TYPE_MEM_REG)
 328                 return ERR_PTR(-EINVAL);
 329
 330         if (max_num_sg > (NES_4K_PBL_CHUNK_SIZE / sizeof(u64)))
 331                 return ERR_PTR(-E2BIG);
 332
 333 /*
 334  * Note:  Set to always use a fixed length single page entry PBL.  This is to allow
 335  *       for the fast_reg_mr operation to always know the size of the PBL.
 336  */
 337         if (max_num_sg > (NES_4K_PBL_CHUNK_SIZE / sizeof(u64)))
 338                 return ERR_PTR(-E2BIG);
 339
 340         get_random_bytes(&next_stag_index, sizeof(next_stag_index));
 341         stag_key = (u8)next_stag_index;
 342         next_stag_index >>= 8;
 343         next_stag_index %= nesadapter->max_mr;
 344
 345         err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
 346                                  nesadapter->max_mr, &stag_index,
 347                                  &next_stag_index, NES_RESOURCE_FAST_MR);
 348         if (err)
 349                 return ERR_PTR(err);
 350
 351         nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
 352         if (!nesmr) {
 353                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
 354                 return ERR_PTR(-ENOMEM);
 355         }
 356
 357         stag = stag_index << 8;
 358         stag |= driver_key;
 359         stag += (u32)stag_key;
 360
 361         nes_debug(NES_DBG_MR, "Allocating STag 0x%08X index = 0x%08X\n",
 362                   stag, stag_index);
 363
 364         ret = alloc_fast_reg_mr(nesdev, nespd, stag, max_num_sg);
 365
 366         if (ret == 0) {
 367                 nesmr->ibmr.rkey = stag;
 368                 nesmr->ibmr.lkey = stag;
 369                 nesmr->mode = IWNES_MEMREG_TYPE_FMEM;
 370                 ibmr = &nesmr->ibmr;
 371         } else {
 372                 kfree(nesmr);
 373                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
 374                 return ERR_PTR(-ENOMEM);
 375         }
 376
 377         nesmr->pages = pci_alloc_consistent(nesdev->pcidev,
 378                                             max_num_sg * sizeof(u64),
 379                                             &nesmr->paddr);
 380         if (!nesmr->paddr)
 381                 goto err;
 382
 383         nesmr->max_pages = max_num_sg;
 384
 385         return ibmr;
 386
 387 err:
 388         nes_dereg_mr(ibmr);
 389
 390         return ERR_PTR(-ENOMEM);
 391 }
 392
 393 static int nes_set_page(struct ib_mr *ibmr, u64 addr)
 394 {
 395         struct nes_mr *nesmr = to_nesmr(ibmr);
 396
 397         if (unlikely(nesmr->npages == nesmr->max_pages))
 398                 return -ENOMEM;
 399
 400         nesmr->pages[nesmr->npages++] = cpu_to_le64(addr);
 401
 402         return 0;
 403 }
 404
 405 static int nes_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg,
 406                          int sg_nents, unsigned int *sg_offset)
 407 {
 408         struct nes_mr *nesmr = to_nesmr(ibmr);
 409
 410         nesmr->npages = 0;
 411
 412         return ib_sg_to_pages(ibmr, sg, sg_nents, sg_offset, nes_set_page);
 413 }
 414
 415 /**
 416  * nes_query_device
 417  */
 418 static int nes_query_device(struct ib_device *ibdev, struct ib_device_attr *props,
 419                             struct ib_udata *uhw)
 420 {
 421         struct nes_vnic *nesvnic = to_nesvnic(ibdev);
 422         struct nes_device *nesdev = nesvnic->nesdev;
 423         struct nes_ib_device *nesibdev = nesvnic->nesibdev;
 424
 425         if (uhw->inlen || uhw->outlen)
 426                 return -EINVAL;
 427
 428         memset(props, 0, sizeof(*props));
 429         memcpy(&props->sys_image_guid, nesvnic->netdev->dev_addr, 6);
 430
 431         props->fw_ver = nesdev->nesadapter->firmware_version;
 432         props->device_cap_flags = nesdev->nesadapter->device_cap_flags;
 433         props->vendor_id = nesdev->nesadapter->vendor_id;
 434         props->vendor_part_id = nesdev->nesadapter->vendor_part_id;
 435         props->hw_ver = nesdev->nesadapter->hw_rev;
 436         props->max_mr_size = 0x80000000;
 437         props->max_qp = nesibdev->max_qp;
 438         props->max_qp_wr = nesdev->nesadapter->max_qp_wr - 2;
 439         props->max_sge = nesdev->nesadapter->max_sge;
 440         props->max_cq = nesibdev->max_cq;
 441         props->max_cqe = nesdev->nesadapter->max_cqe;
 442         props->max_mr = nesibdev->max_mr;
 443         props->max_mw = nesibdev->max_mr;
 444         props->max_pd = nesibdev->max_pd;
 445         props->max_sge_rd = 1;
 446         switch (nesdev->nesadapter->max_irrq_wr) {
 447                 case 0:
 448                         props->max_qp_rd_atom = 2;
 449                         break;
 450                 case 1:
 451                         props->max_qp_rd_atom = 8;
 452                         break;
 453                 case 2:
 454                         props->max_qp_rd_atom = 32;
 455                         break;
 456                 case 3:
 457                         props->max_qp_rd_atom = 64;
 458                         break;
 459                 default:
 460                         props->max_qp_rd_atom = 0;
 461         }
 462         props->max_qp_init_rd_atom = props->max_qp_rd_atom;
 463         props->atomic_cap = IB_ATOMIC_NONE;
 464         props->max_map_per_fmr = 1;
 465
 466         return 0;
 467 }
 468
 469
 470 /**
 471  * nes_query_port
 472  */
 473 static int nes_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props)
 474 {
 475         struct nes_vnic *nesvnic = to_nesvnic(ibdev);
 476         struct net_device *netdev = nesvnic->netdev;
 477
 478         /* props being zeroed by the caller, avoid zeroing it here */
 479
 480         props->max_mtu = IB_MTU_4096;
 481         props->active_mtu = ib_mtu_int_to_enum(netdev->mtu);
 482
 483         props->lid = 1;
 484         props->lmc = 0;
 485         props->sm_lid = 0;
 486         props->sm_sl = 0;
 487         if (netif_queue_stopped(netdev))
 488                 props->state = IB_PORT_DOWN;
 489         else if (nesvnic->linkup)
 490                 props->state = IB_PORT_ACTIVE;
 491         else
 492                 props->state = IB_PORT_DOWN;
 493         props->phys_state = 0;
 494         props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP |
 495                         IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
 496         props->gid_tbl_len = 1;
 497         props->pkey_tbl_len = 1;
 498         props->qkey_viol_cntr = 0;
 499         props->active_width = IB_WIDTH_4X;
 500         props->active_speed = IB_SPEED_SDR;
 501         props->max_msg_sz = 0x80000000;
 502
 503         return 0;
 504 }
 505
 506 /**
 507  * nes_query_pkey
 508  */
 509 static int nes_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
 510 {
 511         *pkey = 0;
 512         return 0;
 513 }
 514
 515
 516 /**
 517  * nes_query_gid
 518  */
 519 static int nes_query_gid(struct ib_device *ibdev, u8 port,
 520                 int index, union ib_gid *gid)
 521 {
 522         struct nes_vnic *nesvnic = to_nesvnic(ibdev);
 523
 524         memset(&(gid->raw[0]), 0, sizeof(gid->raw));
 525         memcpy(&(gid->raw[0]), nesvnic->netdev->dev_addr, 6);
 526
 527         return 0;
 528 }
 529
 530
 531 /**
 532  * nes_alloc_ucontext - Allocate the user context data structure. This keeps track
 533  * of all objects associated with a particular user-mode client.
 534  */
 535 static struct ib_ucontext *nes_alloc_ucontext(struct ib_device *ibdev,
 536                 struct ib_udata *udata)
 537 {
 538         struct nes_vnic *nesvnic = to_nesvnic(ibdev);
 539         struct nes_device *nesdev = nesvnic->nesdev;
 540         struct nes_adapter *nesadapter = nesdev->nesadapter;
 541         struct nes_alloc_ucontext_req req;
 542         struct nes_alloc_ucontext_resp uresp;
 543         struct nes_ucontext *nes_ucontext;
 544         struct nes_ib_device *nesibdev = nesvnic->nesibdev;
 545
 546
 547         if (ib_copy_from_udata(&req, udata, sizeof(struct nes_alloc_ucontext_req))) {
 548                 printk(KERN_ERR PFX "Invalid structure size on allocate user context.\n");
 549                 return ERR_PTR(-EINVAL);
 550         }
 551
 552         if (req.userspace_ver != NES_ABI_USERSPACE_VER) {
 553                 printk(KERN_ERR PFX "Invalid userspace driver version detected. Detected version %d, should be %d\n",
 554                         req.userspace_ver, NES_ABI_USERSPACE_VER);
 555                 return ERR_PTR(-EINVAL);
 556         }
 557
 558
 559         memset(&uresp, 0, sizeof uresp);
 560
 561         uresp.max_qps = nesibdev->max_qp;
 562         uresp.max_pds = nesibdev->max_pd;
 563         uresp.wq_size = nesdev->nesadapter->max_qp_wr * 2;
 564         uresp.virtwq = nesadapter->virtwq;
 565         uresp.kernel_ver = NES_ABI_KERNEL_VER;
 566
 567         nes_ucontext = kzalloc(sizeof *nes_ucontext, GFP_KERNEL);
 568         if (!nes_ucontext)
 569                 return ERR_PTR(-ENOMEM);
 570
 571         nes_ucontext->nesdev = nesdev;
 572         nes_ucontext->mmap_wq_offset = uresp.max_pds;
 573         nes_ucontext->mmap_cq_offset = nes_ucontext->mmap_wq_offset +
 574                         ((sizeof(struct nes_hw_qp_wqe) * uresp.max_qps * 2) + PAGE_SIZE-1) /
 575                         PAGE_SIZE;
 576
 577
 578         if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
 579                 kfree(nes_ucontext);
 580                 return ERR_PTR(-EFAULT);
 581         }
 582
 583         INIT_LIST_HEAD(&nes_ucontext->cq_reg_mem_list);
 584         INIT_LIST_HEAD(&nes_ucontext->qp_reg_mem_list);
 585         atomic_set(&nes_ucontext->usecnt, 1);
 586         return &nes_ucontext->ibucontext;
 587 }
 588
 589
 590 /**
 591  * nes_dealloc_ucontext
 592  */
 593 static int nes_dealloc_ucontext(struct ib_ucontext *context)
 594 {
 595         /* struct nes_vnic *nesvnic = to_nesvnic(context->device); */
 596         /* struct nes_device *nesdev = nesvnic->nesdev; */
 597         struct nes_ucontext *nes_ucontext = to_nesucontext(context);
 598
 599         if (!atomic_dec_and_test(&nes_ucontext->usecnt))
 600           return 0;
 601         kfree(nes_ucontext);
 602         return 0;
 603 }
 604
 605
 606 /**
 607  * nes_mmap
 608  */
 609 static int nes_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
 610 {
 611         unsigned long index;
 612         struct nes_vnic *nesvnic = to_nesvnic(context->device);
 613         struct nes_device *nesdev = nesvnic->nesdev;
 614         /* struct nes_adapter *nesadapter = nesdev->nesadapter; */
 615         struct nes_ucontext *nes_ucontext;
 616         struct nes_qp *nesqp;
 617
 618         nes_ucontext = to_nesucontext(context);
 619
 620
 621         if (vma->vm_pgoff >= nes_ucontext->mmap_wq_offset) {
 622                 index = (vma->vm_pgoff - nes_ucontext->mmap_wq_offset) * PAGE_SIZE;
 623                 index /= ((sizeof(struct nes_hw_qp_wqe) * nesdev->nesadapter->max_qp_wr * 2) +
 624                                 PAGE_SIZE-1) & (~(PAGE_SIZE-1));
 625                 if (!test_bit(index, nes_ucontext->allocated_wqs)) {
 626                         nes_debug(NES_DBG_MMAP, "wq %lu not allocated\n", index);
 627                         return -EFAULT;
 628                 }
 629                 nesqp = nes_ucontext->mmap_nesqp[index];
 630                 if (nesqp == NULL) {
 631                         nes_debug(NES_DBG_MMAP, "wq %lu has a NULL QP base.\n", index);
 632                         return -EFAULT;
 633                 }
 634                 if (remap_pfn_range(vma, vma->vm_start,
 635                                 virt_to_phys(nesqp->hwqp.sq_vbase) >> PAGE_SHIFT,
 636                                 vma->vm_end - vma->vm_start,
 637                                 vma->vm_page_prot)) {
 638                         nes_debug(NES_DBG_MMAP, "remap_pfn_range failed.\n");
 639                         return -EAGAIN;
 640                 }
 641                 vma->vm_private_data = nesqp;
 642                 return 0;
 643         } else {
 644                 index = vma->vm_pgoff;
 645                 if (!test_bit(index, nes_ucontext->allocated_doorbells))
 646                         return -EFAULT;
 647
 648                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 649                 if (io_remap_pfn_range(vma, vma->vm_start,
 650                                 (nesdev->doorbell_start +
 651                                 ((nes_ucontext->mmap_db_index[index] - nesdev->base_doorbell_index) * 4096))
 652                                 >> PAGE_SHIFT, PAGE_SIZE, vma->vm_page_prot))
 653                         return -EAGAIN;
 654                 vma->vm_private_data = nes_ucontext;
 655                 return 0;
 656         }
 657
 658         return -ENOSYS;
 659 }
 660
 661
 662 /**
 663  * nes_alloc_pd
 664  */
 665 static struct ib_pd *nes_alloc_pd(struct ib_device *ibdev,
 666                 struct ib_ucontext *context, struct ib_udata *udata)
 667 {
 668         struct nes_pd *nespd;
 669         struct nes_vnic *nesvnic = to_nesvnic(ibdev);
 670         struct nes_device *nesdev = nesvnic->nesdev;
 671         struct nes_adapter *nesadapter = nesdev->nesadapter;
 672         struct nes_ucontext *nesucontext;
 673         struct nes_alloc_pd_resp uresp;
 674         u32 pd_num = 0;
 675         int err;
 676
 677         nes_debug(NES_DBG_PD, "nesvnic=%p, netdev=%p %s, ibdev=%p, context=%p, netdev refcnt=%u\n",
 678                         nesvnic, nesdev->netdev[0], nesdev->netdev[0]->name, ibdev, context,
 679                         netdev_refcnt_read(nesvnic->netdev));
 680
 681         err = nes_alloc_resource(nesadapter, nesadapter->allocated_pds,
 682                         nesadapter->max_pd, &pd_num, &nesadapter->next_pd, NES_RESOURCE_PD);
 683         if (err) {
 684                 return ERR_PTR(err);
 685         }
 686
 687         nespd = kzalloc(sizeof (struct nes_pd), GFP_KERNEL);
 688         if (!nespd) {
 689                 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
 690                 return ERR_PTR(-ENOMEM);
 691         }
 692
 693         nes_debug(NES_DBG_PD, "Allocating PD (%p) for ib device %s\n",
 694                         nespd, nesvnic->nesibdev->ibdev.name);
 695
 696         nespd->pd_id = (pd_num << (PAGE_SHIFT-12)) + nesadapter->base_pd;
 697
 698         if (context) {
 699                 nesucontext = to_nesucontext(context);
 700                 nespd->mmap_db_index = find_next_zero_bit(nesucontext->allocated_doorbells,
 701                                 NES_MAX_USER_DB_REGIONS, nesucontext->first_free_db);
 702                 nes_debug(NES_DBG_PD, "find_first_zero_biton doorbells returned %u, mapping pd_id %u.\n",
 703                                 nespd->mmap_db_index, nespd->pd_id);
 704                 if (nespd->mmap_db_index >= NES_MAX_USER_DB_REGIONS) {
 705                         nes_debug(NES_DBG_PD, "mmap_db_index > MAX\n");
 706                         nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
 707                         kfree(nespd);
 708                         return ERR_PTR(-ENOMEM);
 709                 }
 710
 711                 uresp.pd_id = nespd->pd_id;
 712                 uresp.mmap_db_index = nespd->mmap_db_index;
 713                 if (ib_copy_to_udata(udata, &uresp, sizeof (struct nes_alloc_pd_resp))) {
 714                         nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
 715                         kfree(nespd);
 716                         return ERR_PTR(-EFAULT);
 717                 }
 718
 719                 set_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
 720                 nesucontext->mmap_db_index[nespd->mmap_db_index] = nespd->pd_id;
 721                 nesucontext->first_free_db = nespd->mmap_db_index + 1;
 722         }
 723
 724         nes_debug(NES_DBG_PD, "PD%u structure located @%p.\n", nespd->pd_id, nespd);
 725         return &nespd->ibpd;
 726 }
 727
 728
 729 /**
 730  * nes_dealloc_pd
 731  */
 732 static int nes_dealloc_pd(struct ib_pd *ibpd)
 733 {
 734         struct nes_ucontext *nesucontext;
 735         struct nes_pd *nespd = to_nespd(ibpd);
 736         struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
 737         struct nes_device *nesdev = nesvnic->nesdev;
 738         struct nes_adapter *nesadapter = nesdev->nesadapter;
 739
 740         if ((ibpd->uobject) && (ibpd->uobject->context)) {
 741                 nesucontext = to_nesucontext(ibpd->uobject->context);
 742                 nes_debug(NES_DBG_PD, "Clearing bit %u from allocated doorbells\n",
 743                                 nespd->mmap_db_index);
 744                 clear_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
 745                 nesucontext->mmap_db_index[nespd->mmap_db_index] = 0;
 746                 if (nesucontext->first_free_db > nespd->mmap_db_index) {
 747                         nesucontext->first_free_db = nespd->mmap_db_index;
 748                 }
 749         }
 750
 751         nes_debug(NES_DBG_PD, "Deallocating PD%u structure located @%p.\n",
 752                         nespd->pd_id, nespd);
 753         nes_free_resource(nesadapter, nesadapter->allocated_pds,
 754                         (nespd->pd_id-nesadapter->base_pd)>>(PAGE_SHIFT-12));
 755         kfree(nespd);
 756
 757         return 0;
 758 }
 759
 760
 761 /**
 762  * nes_create_ah
 763  */
 764 static struct ib_ah *nes_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr,
 765                                    struct ib_udata *udata)
 766 {
 767         return ERR_PTR(-ENOSYS);
 768 }
 769
 770
 771 /**
 772  * nes_destroy_ah
 773  */
 774 static int nes_destroy_ah(struct ib_ah *ah)
 775 {
 776         return -ENOSYS;
 777 }
 778
 779
 780 /**
 781  * nes_get_encoded_size
 782  */
 783 static inline u8 nes_get_encoded_size(int *size)
 784 {
 785         u8 encoded_size = 0;
 786         if (*size <= 32) {
 787                 *size = 32;
 788                 encoded_size = 1;
 789         } else if (*size <= 128) {
 790                 *size = 128;
 791                 encoded_size = 2;
 792         } else if (*size <= 512) {
 793                 *size = 512;
 794                 encoded_size = 3;
 795         }
 796         return (encoded_size);
 797 }
 798
 799
 800
 801 /**
 802  * nes_setup_virt_qp
 803  */
 804 static int nes_setup_virt_qp(struct nes_qp *nesqp, struct nes_pbl *nespbl,
 805                 struct nes_vnic *nesvnic, int sq_size, int rq_size)
 806 {
 807         unsigned long flags;
 808         void *mem;
 809         __le64 *pbl = NULL;
 810         __le64 *tpbl;
 811         __le64 *pblbuffer;
 812         struct nes_device *nesdev = nesvnic->nesdev;
 813         struct nes_adapter *nesadapter = nesdev->nesadapter;
 814         u32 pbl_entries;
 815         u8 rq_pbl_entries;
 816         u8 sq_pbl_entries;
 817
 818         pbl_entries = nespbl->pbl_size >> 3;
 819         nes_debug(NES_DBG_QP, "Userspace PBL, pbl_size=%u, pbl_entries = %d pbl_vbase=%p, pbl_pbase=%lx\n",
 820                         nespbl->pbl_size, pbl_entries,
 821                         (void *)nespbl->pbl_vbase,
 822                         (unsigned long) nespbl->pbl_pbase);
 823         pbl = (__le64 *) nespbl->pbl_vbase; /* points to first pbl entry */
 824         /* now lets set the sq_vbase as well as rq_vbase addrs we will assign */
 825         /* the first pbl to be fro the rq_vbase... */
 826         rq_pbl_entries = (rq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
 827         sq_pbl_entries = (sq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
 828         nesqp->hwqp.sq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
 829         if (!nespbl->page) {
 830                 nes_debug(NES_DBG_QP, "QP nespbl->page is NULL \n");
 831                 kfree(nespbl);
 832                 return -ENOMEM;
 833         }
 834
 835         nesqp->hwqp.sq_vbase = kmap(nespbl->page);
 836         nesqp->page = nespbl->page;
 837         if (!nesqp->hwqp.sq_vbase) {
 838                 nes_debug(NES_DBG_QP, "QP sq_vbase kmap failed\n");
 839                 kfree(nespbl);
 840                 return -ENOMEM;
 841         }
 842
 843         /* Now to get to sq.. we need to calculate how many */
 844         /* PBL entries were used by the rq.. */
 845         pbl += sq_pbl_entries;
 846         nesqp->hwqp.rq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
 847         /* nesqp->hwqp.rq_vbase = bus_to_virt(*pbl); */
 848         /*nesqp->hwqp.rq_vbase = phys_to_virt(*pbl); */
 849
 850         nes_debug(NES_DBG_QP, "QP sq_vbase= %p sq_pbase=%lx rq_vbase=%p rq_pbase=%lx\n",
 851                   nesqp->hwqp.sq_vbase, (unsigned long) nesqp->hwqp.sq_pbase,
 852                   nesqp->hwqp.rq_vbase, (unsigned long) nesqp->hwqp.rq_pbase);
 853         spin_lock_irqsave(&nesadapter->pbl_lock, flags);
 854         if (!nesadapter->free_256pbl) {
 855                 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
 856                                 nespbl->pbl_pbase);
 857                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
 858                 kunmap(nesqp->page);
 859                 kfree(nespbl);
 860                 return -ENOMEM;
 861         }
 862         nesadapter->free_256pbl--;
 863         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
 864
 865         nesqp->pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 256, &nesqp->pbl_pbase);
 866         pblbuffer = nesqp->pbl_vbase;
 867         if (!nesqp->pbl_vbase) {
 868                 /* memory allocated during nes_reg_user_mr() */
 869                 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
 870                                     nespbl->pbl_pbase);
 871                 kfree(nespbl);
 872                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
 873                 nesadapter->free_256pbl++;
 874                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
 875                 kunmap(nesqp->page);
 876                 return -ENOMEM;
 877         }
 878         memset(nesqp->pbl_vbase, 0, 256);
 879         /* fill in the page address in the pbl buffer.. */
 880         tpbl = pblbuffer + 16;
 881         pbl = (__le64 *)nespbl->pbl_vbase;
 882         while (sq_pbl_entries--)
 883                 *tpbl++ = *pbl++;
 884         tpbl = pblbuffer;
 885         while (rq_pbl_entries--)
 886                 *tpbl++ = *pbl++;
 887
 888         /* done with memory allocated during nes_reg_user_mr() */
 889         pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
 890                             nespbl->pbl_pbase);
 891         kfree(nespbl);
 892
 893         nesqp->qp_mem_size =
 894                         max((u32)sizeof(struct nes_qp_context), ((u32)256)) + 256;     /* this is Q2 */
 895         /* Round up to a multiple of a page */
 896         nesqp->qp_mem_size += PAGE_SIZE - 1;
 897         nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
 898
 899         mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
 900                         &nesqp->hwqp.q2_pbase);
 901
 902         if (!mem) {
 903                 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase);
 904                 nesqp->pbl_vbase = NULL;
 905                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
 906                 nesadapter->free_256pbl++;
 907                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
 908                 kunmap(nesqp->page);
 909                 return -ENOMEM;
 910         }
 911         nesqp->sq_kmapped = 1;
 912         nesqp->hwqp.q2_vbase = mem;
 913         mem += 256;
 914         memset(nesqp->hwqp.q2_vbase, 0, 256);
 915         nesqp->nesqp_context = mem;
 916         memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
 917         nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
 918
 919         return 0;
 920 }
 921
 922
 923 /**
 924  * nes_setup_mmap_qp
 925  */
 926 static int nes_setup_mmap_qp(struct nes_qp *nesqp, struct nes_vnic *nesvnic,
 927                 int sq_size, int rq_size)
 928 {
 929         void *mem;
 930         struct nes_device *nesdev = nesvnic->nesdev;
 931
 932         nesqp->qp_mem_size = (sizeof(struct nes_hw_qp_wqe) * sq_size) +
 933                         (sizeof(struct nes_hw_qp_wqe) * rq_size) +
 934                         max((u32)sizeof(struct nes_qp_context), ((u32)256)) +
 935                         256; /* this is Q2 */
 936         /* Round up to a multiple of a page */
 937         nesqp->qp_mem_size += PAGE_SIZE - 1;
 938         nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
 939
 940         mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
 941                         &nesqp->hwqp.sq_pbase);
 942         if (!mem)
 943                 return -ENOMEM;
 944         nes_debug(NES_DBG_QP, "PCI consistent memory for "
 945                         "host descriptor rings located @ %p (pa = 0x%08lX.) size = %u.\n",
 946                         mem, (unsigned long)nesqp->hwqp.sq_pbase, nesqp->qp_mem_size);
 947
 948         memset(mem, 0, nesqp->qp_mem_size);
 949
 950         nesqp->hwqp.sq_vbase = mem;
 951         mem += sizeof(struct nes_hw_qp_wqe) * sq_size;
 952
 953         nesqp->hwqp.rq_vbase = mem;
 954         nesqp->hwqp.rq_pbase = nesqp->hwqp.sq_pbase +
 955                         sizeof(struct nes_hw_qp_wqe) * sq_size;
 956         mem += sizeof(struct nes_hw_qp_wqe) * rq_size;
 957
 958         nesqp->hwqp.q2_vbase = mem;
 959         nesqp->hwqp.q2_pbase = nesqp->hwqp.rq_pbase +
 960                         sizeof(struct nes_hw_qp_wqe) * rq_size;
 961         mem += 256;
 962         memset(nesqp->hwqp.q2_vbase, 0, 256);
 963
 964         nesqp->nesqp_context = mem;
 965         nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
 966         memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
 967         return 0;
 968 }
 969
 970
 971 /**
 972  * nes_free_qp_mem() is to free up the qp's pci_alloc_consistent() memory.
 973  */
 974 static void nes_free_qp_mem(struct nes_device *nesdev,
 975                 struct nes_qp *nesqp, int virt_wqs)
 976 {
 977         unsigned long flags;
 978         struct nes_adapter *nesadapter = nesdev->nesadapter;
 979         if (!virt_wqs) {
 980                 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
 981                                 nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase);
 982         }else {
 983                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
 984                 nesadapter->free_256pbl++;
 985                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
 986                 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size, nesqp->hwqp.q2_vbase, nesqp->hwqp.q2_pbase);
 987                 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase );
 988                 nesqp->pbl_vbase = NULL;
 989                 if (nesqp->sq_kmapped) {
 990                         nesqp->sq_kmapped = 0;
 991                         kunmap(nesqp->page);
 992                 }
 993         }
 994 }
 995
 996
 997 /**
 998  * nes_create_qp
 999  */
1000 static struct ib_qp *nes_create_qp(struct ib_pd *ibpd,
1001                 struct ib_qp_init_attr *init_attr, struct ib_udata *udata)
1002 {
1003         u64 u64temp= 0;
1004         u64 u64nesqp = 0;
1005         struct nes_pd *nespd = to_nespd(ibpd);
1006         struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
1007         struct nes_device *nesdev = nesvnic->nesdev;
1008         struct nes_adapter *nesadapter = nesdev->nesadapter;
1009         struct nes_qp *nesqp;
1010         struct nes_cq *nescq;
1011         struct nes_ucontext *nes_ucontext;
1012         struct nes_hw_cqp_wqe *cqp_wqe;
1013         struct nes_cqp_request *cqp_request;
1014         struct nes_create_qp_req req;
1015         struct nes_create_qp_resp uresp;
1016         struct nes_pbl  *nespbl = NULL;
1017         u32 qp_num = 0;
1018         u32 opcode = 0;
1019         /* u32 counter = 0; */
1020         void *mem;
1021         unsigned long flags;
1022         int ret;
1023         int err;
1024         int virt_wqs = 0;
1025         int sq_size;
1026         int rq_size;
1027         u8 sq_encoded_size;
1028         u8 rq_encoded_size;
1029         /* int counter; */
1030
1031         if (init_attr->create_flags)
1032                 return ERR_PTR(-EINVAL);
1033
1034         atomic_inc(&qps_created);
1035         switch (init_attr->qp_type) {
1036                 case IB_QPT_RC:
1037                         if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) {
1038                                 init_attr->cap.max_inline_data = 0;
1039                         } else {
1040                                 init_attr->cap.max_inline_data = 64;
1041                         }
1042                         sq_size = init_attr->cap.max_send_wr;
1043                         rq_size = init_attr->cap.max_recv_wr;
1044
1045                         /* check if the encoded sizes are OK or not... */
1046                         sq_encoded_size = nes_get_encoded_size(&sq_size);
1047                         rq_encoded_size = nes_get_encoded_size(&rq_size);
1048
1049                         if ((!sq_encoded_size) || (!rq_encoded_size)) {
1050                                 nes_debug(NES_DBG_QP, "ERROR bad rq (%u) or sq (%u) size\n",
1051                                                 rq_size, sq_size);
1052                                 return ERR_PTR(-EINVAL);
1053                         }
1054
1055                         init_attr->cap.max_send_wr = sq_size -2;
1056                         init_attr->cap.max_recv_wr = rq_size -1;
1057                         nes_debug(NES_DBG_QP, "RQ size=%u, SQ Size=%u\n", rq_size, sq_size);
1058
1059                         ret = nes_alloc_resource(nesadapter, nesadapter->allocated_qps,
1060                                         nesadapter->max_qp, &qp_num, &nesadapter->next_qp, NES_RESOURCE_QP);
1061                         if (ret) {
1062                                 return ERR_PTR(ret);
1063                         }
1064
1065                         /* Need 512 (actually now 1024) byte alignment on this structure */
1066                         mem = kzalloc(sizeof(*nesqp)+NES_SW_CONTEXT_ALIGN-1, GFP_KERNEL);
1067                         if (!mem) {
1068                                 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1069                                 return ERR_PTR(-ENOMEM);
1070                         }
1071                         u64nesqp = (unsigned long)mem;
1072                         u64nesqp += ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1073                         u64temp = ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1074                         u64nesqp &= ~u64temp;
1075                         nesqp = (struct nes_qp *)(unsigned long)u64nesqp;
1076                         /* nes_debug(NES_DBG_QP, "nesqp=%p, allocated buffer=%p.  Rounded to closest %u\n",
1077                                         nesqp, mem, NES_SW_CONTEXT_ALIGN); */
1078                         nesqp->allocated_buffer = mem;
1079
1080                         if (udata) {
1081                                 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_create_qp_req))) {
1082                                         nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1083                                         kfree(nesqp->allocated_buffer);
1084                                         nes_debug(NES_DBG_QP, "ib_copy_from_udata() Failed \n");
1085                                         return ERR_PTR(-EFAULT);
1086                                 }
1087                                 if (req.user_wqe_buffers) {
1088                                         virt_wqs = 1;
1089                                 }
1090                                 if (req.user_qp_buffer)
1091                                         nesqp->nesuqp_addr = req.user_qp_buffer;
1092                                 if ((ibpd->uobject) && (ibpd->uobject->context)) {
1093                                         nesqp->user_mode = 1;
1094                                         nes_ucontext = to_nesucontext(ibpd->uobject->context);
1095                                         if (virt_wqs) {
1096                                                 err = 1;
1097                                                 list_for_each_entry(nespbl, &nes_ucontext->qp_reg_mem_list, list) {
1098                                                         if (nespbl->user_base == (unsigned long )req.user_wqe_buffers) {
1099                                                                 list_del(&nespbl->list);
1100                                                                 err = 0;
1101                                                                 nes_debug(NES_DBG_QP, "Found PBL for virtual QP. nespbl=%p. user_base=0x%lx\n",
1102                                                                           nespbl, nespbl->user_base);
1103                                                                 break;
1104                                                         }
1105                                                 }
1106                                                 if (err) {
1107                                                         nes_debug(NES_DBG_QP, "Didn't Find PBL for virtual QP. address = %llx.\n",
1108                                                                   (long long unsigned int)req.user_wqe_buffers);
1109                                                         nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1110                                                         kfree(nesqp->allocated_buffer);
1111                                                         return ERR_PTR(-EFAULT);
1112                                                 }
1113                                         }
1114
1115                                         nes_ucontext = to_nesucontext(ibpd->uobject->context);
1116                                         nesqp->mmap_sq_db_index =
1117                                                 find_next_zero_bit(nes_ucontext->allocated_wqs,
1118                                                                    NES_MAX_USER_WQ_REGIONS, nes_ucontext->first_free_wq);
1119                                         /* nes_debug(NES_DBG_QP, "find_first_zero_biton wqs returned %u\n",
1120                                                         nespd->mmap_db_index); */
1121                                         if (nesqp->mmap_sq_db_index >= NES_MAX_USER_WQ_REGIONS) {
1122                                                 nes_debug(NES_DBG_QP,
1123                                                           "db index > max user regions, failing create QP\n");
1124                                                 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1125                                                 if (virt_wqs) {
1126                                                         pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1127                                                                             nespbl->pbl_pbase);
1128                                                         kfree(nespbl);
1129                                                 }
1130                                                 kfree(nesqp->allocated_buffer);
1131                                                 return ERR_PTR(-ENOMEM);
1132                                         }
1133                                         set_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1134                                         nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = nesqp;
1135                                         nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index + 1;
1136                                 } else {
1137                                         nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1138                                         kfree(nesqp->allocated_buffer);
1139                                         return ERR_PTR(-EFAULT);
1140                                 }
1141                         }
1142                         err = (!virt_wqs) ? nes_setup_mmap_qp(nesqp, nesvnic, sq_size, rq_size) :
1143                                         nes_setup_virt_qp(nesqp, nespbl, nesvnic, sq_size, rq_size);
1144                         if (err) {
1145                                 nes_debug(NES_DBG_QP,
1146                                           "error geting qp mem code = %d\n", err);
1147                                 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1148                                 kfree(nesqp->allocated_buffer);
1149                                 return ERR_PTR(-ENOMEM);
1150                         }
1151
1152                         nesqp->hwqp.sq_size = sq_size;
1153                         nesqp->hwqp.sq_encoded_size = sq_encoded_size;
1154                         nesqp->hwqp.sq_head = 1;
1155                         nesqp->hwqp.rq_size = rq_size;
1156                         nesqp->hwqp.rq_encoded_size = rq_encoded_size;
1157                         /* nes_debug(NES_DBG_QP, "nesqp->nesqp_context_pbase = %p\n",
1158                                         (void *)nesqp->nesqp_context_pbase);
1159                         */
1160                         nesqp->hwqp.qp_id = qp_num;
1161                         nesqp->ibqp.qp_num = nesqp->hwqp.qp_id;
1162                         nesqp->nespd = nespd;
1163
1164                         nescq = to_nescq(init_attr->send_cq);
1165                         nesqp->nesscq = nescq;
1166                         nescq = to_nescq(init_attr->recv_cq);
1167                         nesqp->nesrcq = nescq;
1168
1169                         nesqp->nesqp_context->misc |= cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) <<
1170                                         NES_QPCONTEXT_MISC_PCI_FCN_SHIFT);
1171                         nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.rq_encoded_size <<
1172                                         NES_QPCONTEXT_MISC_RQ_SIZE_SHIFT);
1173                         nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.sq_encoded_size <<
1174                                         NES_QPCONTEXT_MISC_SQ_SIZE_SHIFT);
1175                         if (!udata) {
1176                                 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_PRIV_EN);
1177                                 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_FAST_REGISTER_EN);
1178                         }
1179                         nesqp->nesqp_context->cqs = cpu_to_le32(nesqp->nesscq->hw_cq.cq_number +
1180                                         ((u32)nesqp->nesrcq->hw_cq.cq_number << 16));
1181                         u64temp = (u64)nesqp->hwqp.sq_pbase;
1182                         nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1183                         nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1184
1185
1186                         if (!virt_wqs) {
1187                                 u64temp = (u64)nesqp->hwqp.sq_pbase;
1188                                 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1189                                 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1190                                 u64temp = (u64)nesqp->hwqp.rq_pbase;
1191                                 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1192                                 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1193                         } else {
1194                                 u64temp = (u64)nesqp->pbl_pbase;
1195                                 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1196                                 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1197                         }
1198
1199                         /* nes_debug(NES_DBG_QP, "next_qp_nic_index=%u, using nic_index=%d\n",
1200                                         nesvnic->next_qp_nic_index,
1201                                         nesvnic->qp_nic_index[nesvnic->next_qp_nic_index]); */
1202                         spin_lock_irqsave(&nesdev->cqp.lock, flags);
1203                         nesqp->nesqp_context->misc2 |= cpu_to_le32(
1204                                         (u32)nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] <<
1205                                         NES_QPCONTEXT_MISC2_NIC_INDEX_SHIFT);
1206                         nesvnic->next_qp_nic_index++;
1207                         if ((nesvnic->next_qp_nic_index > 3) ||
1208                                         (nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] == 0xf)) {
1209                                 nesvnic->next_qp_nic_index = 0;
1210                         }
1211                         spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
1212
1213                         nesqp->nesqp_context->pd_index_wscale |= cpu_to_le32((u32)nesqp->nespd->pd_id << 16);
1214                         u64temp = (u64)nesqp->hwqp.q2_pbase;
1215                         nesqp->nesqp_context->q2_addr_low = cpu_to_le32((u32)u64temp);
1216                         nesqp->nesqp_context->q2_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1217                         nesqp->nesqp_context->aeq_token_low =  cpu_to_le32((u32)((unsigned long)(nesqp)));
1218                         nesqp->nesqp_context->aeq_token_high =  cpu_to_le32((u32)(upper_32_bits((unsigned long)(nesqp))));
1219                         nesqp->nesqp_context->ird_ord_sizes = cpu_to_le32(NES_QPCONTEXT_ORDIRD_ALSMM |
1220                                         NES_QPCONTEXT_ORDIRD_AAH |
1221                                         ((((u32)nesadapter->max_irrq_wr) <<
1222                                         NES_QPCONTEXT_ORDIRD_IRDSIZE_SHIFT) & NES_QPCONTEXT_ORDIRD_IRDSIZE_MASK));
1223                         if (disable_mpa_crc) {
1224                                 nes_debug(NES_DBG_QP, "Disabling MPA crc checking due to module option.\n");
1225                                 nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32(NES_QPCONTEXT_ORDIRD_RNMC);
1226                         }
1227
1228
1229                         /* Create the QP */
1230                         cqp_request = nes_get_cqp_request(nesdev);
1231                         if (cqp_request == NULL) {
1232                                 nes_debug(NES_DBG_QP, "Failed to get a cqp_request\n");
1233                                 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1234                                 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1235                                 kfree(nesqp->allocated_buffer);
1236                                 return ERR_PTR(-ENOMEM);
1237                         }
1238                         cqp_request->waiting = 1;
1239                         cqp_wqe = &cqp_request->cqp_wqe;
1240
1241                         if (!virt_wqs) {
1242                                 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP |
1243                                         NES_CQP_QP_IWARP_STATE_IDLE;
1244                         } else {
1245                                 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP | NES_CQP_QP_VIRT_WQS |
1246                                         NES_CQP_QP_IWARP_STATE_IDLE;
1247                         }
1248                         opcode |= NES_CQP_QP_CQS_VALID;
1249                         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1250                         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1251                         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
1252
1253                         u64temp = (u64)nesqp->nesqp_context_pbase;
1254                         set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp);
1255
1256                         atomic_set(&cqp_request->refcount, 2);
1257                         nes_post_cqp_request(nesdev, cqp_request);
1258
1259                         /* Wait for CQP */
1260                         nes_debug(NES_DBG_QP, "Waiting for create iWARP QP%u to complete.\n",
1261                                         nesqp->hwqp.qp_id);
1262                         ret = wait_event_timeout(cqp_request->waitq,
1263                                         (cqp_request->request_done != 0), NES_EVENT_TIMEOUT);
1264                         nes_debug(NES_DBG_QP, "Create iwarp QP%u completed, wait_event_timeout ret=%u,"
1265                                         " nesdev->cqp_head = %u, nesdev->cqp.sq_tail = %u,"
1266                                         " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1267                                         nesqp->hwqp.qp_id, ret, nesdev->cqp.sq_head, nesdev->cqp.sq_tail,
1268                                         cqp_request->major_code, cqp_request->minor_code);
1269                         if ((!ret) || (cqp_request->major_code)) {
1270                                 nes_put_cqp_request(nesdev, cqp_request);
1271                                 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1272                                 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1273                                 kfree(nesqp->allocated_buffer);
1274                                 if (!ret) {
1275                                         return ERR_PTR(-ETIME);
1276                                 } else {
1277                                         return ERR_PTR(-EIO);
1278                                 }
1279                         }
1280
1281                         nes_put_cqp_request(nesdev, cqp_request);
1282
1283                         if (ibpd->uobject) {
1284                                 uresp.mmap_sq_db_index = nesqp->mmap_sq_db_index;
1285                                 uresp.mmap_rq_db_index = 0;
1286                                 uresp.actual_sq_size = sq_size;
1287                                 uresp.actual_rq_size = rq_size;
1288                                 uresp.qp_id = nesqp->hwqp.qp_id;
1289                                 uresp.nes_drv_opt = nes_drv_opt;
1290                                 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
1291                                         nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1292                                         nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1293                                         kfree(nesqp->allocated_buffer);
1294                                         return ERR_PTR(-EFAULT);
1295                                 }
1296                         }
1297
1298                         nes_debug(NES_DBG_QP, "QP%u structure located @%p.Size = %u.\n",
1299                                         nesqp->hwqp.qp_id, nesqp, (u32)sizeof(*nesqp));
1300                         spin_lock_init(&nesqp->lock);
1301                         nes_add_ref(&nesqp->ibqp);
1302                         break;
1303                 default:
1304                         nes_debug(NES_DBG_QP, "Invalid QP type: %d\n", init_attr->qp_type);
1305                         return ERR_PTR(-EINVAL);
1306         }
1307         init_completion(&nesqp->sq_drained);
1308         init_completion(&nesqp->rq_drained);
1309
1310         nesqp->sig_all = (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR);
1311         init_timer(&nesqp->terminate_timer);
1312         nesqp->terminate_timer.function = nes_terminate_timeout;
1313         nesqp->terminate_timer.data = (unsigned long)nesqp;
1314
1315         /* update the QP table */
1316         nesdev->nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = nesqp;
1317         nes_debug(NES_DBG_QP, "netdev refcnt=%u\n",
1318                         netdev_refcnt_read(nesvnic->netdev));
1319
1320         return &nesqp->ibqp;
1321 }
1322
1323 /**
1324  * nes_clean_cq
1325  */
1326 static void nes_clean_cq(struct nes_qp *nesqp, struct nes_cq *nescq)
1327 {
1328         u32 cq_head;
1329         u32 lo;
1330         u32 hi;
1331         u64 u64temp;
1332         unsigned long flags = 0;
1333
1334         spin_lock_irqsave(&nescq->lock, flags);
1335
1336         cq_head = nescq->hw_cq.cq_head;
1337         while (le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_VALID) {
1338                 rmb();
1339                 lo = le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
1340                 hi = le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX]);
1341                 u64temp = (((u64)hi) << 32) | ((u64)lo);
1342                 u64temp &= ~(NES_SW_CONTEXT_ALIGN-1);
1343                 if (u64temp == (u64)(unsigned long)nesqp) {
1344                         /* Zero the context value so cqe will be ignored */
1345                         nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX] = 0;
1346                         nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX] = 0;
1347                 }
1348
1349                 if (++cq_head >= nescq->hw_cq.cq_size)
1350                         cq_head = 0;
1351         }
1352
1353         spin_unlock_irqrestore(&nescq->lock, flags);
1354 }
1355
1356
1357 /**
1358  * nes_destroy_qp
1359  */
1360 static int nes_destroy_qp(struct ib_qp *ibqp)
1361 {
1362         struct nes_qp *nesqp = to_nesqp(ibqp);
1363         struct nes_ucontext *nes_ucontext;
1364         struct ib_qp_attr attr;
1365         struct iw_cm_id *cm_id;
1366         struct iw_cm_event cm_event;
1367         int ret = 0;
1368
1369         atomic_inc(&sw_qps_destroyed);
1370         nesqp->destroyed = 1;
1371
1372         /* Blow away the connection if it exists. */
1373         if (nesqp->ibqp_state >= IB_QPS_INIT && nesqp->ibqp_state <= IB_QPS_RTS) {
1374                 /* if (nesqp->ibqp_state == IB_QPS_RTS) { */
1375                 attr.qp_state = IB_QPS_ERR;
1376                 nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL);
1377         }
1378
1379         if (((nesqp->ibqp_state == IB_QPS_INIT) ||
1380                         (nesqp->ibqp_state == IB_QPS_RTR)) && (nesqp->cm_id)) {
1381                 cm_id = nesqp->cm_id;
1382                 cm_event.event = IW_CM_EVENT_CONNECT_REPLY;
1383                 cm_event.status = -ETIMEDOUT;
1384                 cm_event.local_addr = cm_id->local_addr;
1385                 cm_event.remote_addr = cm_id->remote_addr;
1386                 cm_event.private_data = NULL;
1387                 cm_event.private_data_len = 0;
1388
1389                 nes_debug(NES_DBG_QP, "Generating a CM Timeout Event for "
1390                                 "QP%u. cm_id = %p, refcount = %u. \n",
1391                                 nesqp->hwqp.qp_id, cm_id, atomic_read(&nesqp->refcount));
1392
1393                 cm_id->rem_ref(cm_id);
1394                 ret = cm_id->event_handler(cm_id, &cm_event);
1395                 if (ret)
1396                         nes_debug(NES_DBG_QP, "OFA CM event_handler returned, ret=%d\n", ret);
1397         }
1398
1399         if (nesqp->user_mode) {
1400                 if ((ibqp->uobject)&&(ibqp->uobject->context)) {
1401                         nes_ucontext = to_nesucontext(ibqp->uobject->context);
1402                         clear_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1403                         nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = NULL;
1404                         if (nes_ucontext->first_free_wq > nesqp->mmap_sq_db_index) {
1405                                 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index;
1406                         }
1407                 }
1408                 if (nesqp->pbl_pbase && nesqp->sq_kmapped) {
1409                         nesqp->sq_kmapped = 0;
1410                         kunmap(nesqp->page);
1411                 }
1412         } else {
1413                 /* Clean any pending completions from the cq(s) */
1414                 if (nesqp->nesscq)
1415                         nes_clean_cq(nesqp, nesqp->nesscq);
1416
1417                 if ((nesqp->nesrcq) && (nesqp->nesrcq != nesqp->nesscq))
1418                         nes_clean_cq(nesqp, nesqp->nesrcq);
1419         }
1420         nes_rem_ref(&nesqp->ibqp);
1421         return 0;
1422 }
1423
1424
1425 /**
1426  * nes_create_cq
1427  */
1428 static struct ib_cq *nes_create_cq(struct ib_device *ibdev,
1429                                    const struct ib_cq_init_attr *attr,
1430                                    struct ib_ucontext *context,
1431                                    struct ib_udata *udata)
1432 {
1433         int entries = attr->cqe;
1434         u64 u64temp;
1435         struct nes_vnic *nesvnic = to_nesvnic(ibdev);
1436         struct nes_device *nesdev = nesvnic->nesdev;
1437         struct nes_adapter *nesadapter = nesdev->nesadapter;
1438         struct nes_cq *nescq;
1439         struct nes_ucontext *nes_ucontext = NULL;
1440         struct nes_cqp_request *cqp_request;
1441         void *mem = NULL;
1442         struct nes_hw_cqp_wqe *cqp_wqe;
1443         struct nes_pbl *nespbl = NULL;
1444         struct nes_create_cq_req req;
1445         struct nes_create_cq_resp resp;
1446         u32 cq_num = 0;
1447         u32 opcode = 0;
1448         u32 pbl_entries = 1;
1449         int err;
1450         unsigned long flags;
1451         int ret;
1452
1453         if (attr->flags)
1454                 return ERR_PTR(-EINVAL);
1455
1456         if (entries > nesadapter->max_cqe)
1457                 return ERR_PTR(-EINVAL);
1458
1459         err = nes_alloc_resource(nesadapter, nesadapter->allocated_cqs,
1460                         nesadapter->max_cq, &cq_num, &nesadapter->next_cq, NES_RESOURCE_CQ);
1461         if (err) {
1462                 return ERR_PTR(err);
1463         }
1464
1465         nescq = kzalloc(sizeof(struct nes_cq), GFP_KERNEL);
1466         if (!nescq) {
1467                 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1468                 return ERR_PTR(-ENOMEM);
1469         }
1470
1471         nescq->hw_cq.cq_size = max(entries + 1, 5);
1472         nescq->hw_cq.cq_number = cq_num;
1473         nescq->ibcq.cqe = nescq->hw_cq.cq_size - 1;
1474
1475
1476         if (context) {
1477                 nes_ucontext = to_nesucontext(context);
1478                 if (ib_copy_from_udata(&req, udata, sizeof (struct nes_create_cq_req))) {
1479                         nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1480                         kfree(nescq);
1481                         return ERR_PTR(-EFAULT);
1482                 }
1483                 nesvnic->mcrq_ucontext = nes_ucontext;
1484                 nes_ucontext->mcrqf = req.mcrqf;
1485                 if (nes_ucontext->mcrqf) {
1486                         if (nes_ucontext->mcrqf & 0x80000000)
1487                                 nescq->hw_cq.cq_number = nesvnic->nic.qp_id + 28 + 2 * ((nes_ucontext->mcrqf & 0xf) - 1);
1488                         else if (nes_ucontext->mcrqf & 0x40000000)
1489                                 nescq->hw_cq.cq_number = nes_ucontext->mcrqf & 0xffff;
1490                         else
1491                                 nescq->hw_cq.cq_number = nesvnic->mcrq_qp_id + nes_ucontext->mcrqf-1;
1492                         nescq->mcrqf = nes_ucontext->mcrqf;
1493                         nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1494                 }
1495                 nes_debug(NES_DBG_CQ, "CQ Virtual Address = %08lX, size = %u.\n",
1496                                 (unsigned long)req.user_cq_buffer, entries);
1497                 err = 1;
1498                 list_for_each_entry(nespbl, &nes_ucontext->cq_reg_mem_list, list) {
1499                         if (nespbl->user_base == (unsigned long )req.user_cq_buffer) {
1500                                 list_del(&nespbl->list);
1501                                 err = 0;
1502                                 nes_debug(NES_DBG_CQ, "Found PBL for virtual CQ. nespbl=%p.\n",
1503                                                 nespbl);
1504                                 break;
1505                         }
1506                 }
1507                 if (err) {
1508                         nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1509                         kfree(nescq);
1510                         return ERR_PTR(-EFAULT);
1511                 }
1512
1513                 pbl_entries = nespbl->pbl_size >> 3;
1514                 nescq->cq_mem_size = 0;
1515         } else {
1516                 nescq->cq_mem_size = nescq->hw_cq.cq_size * sizeof(struct nes_hw_cqe);
1517                 nes_debug(NES_DBG_CQ, "Attempting to allocate pci memory (%u entries, %u bytes) for CQ%u.\n",
1518                                 entries, nescq->cq_mem_size, nescq->hw_cq.cq_number);
1519
1520                 /* allocate the physical buffer space */
1521                 mem = pci_zalloc_consistent(nesdev->pcidev, nescq->cq_mem_size,
1522                                             &nescq->hw_cq.cq_pbase);
1523                 if (!mem) {
1524                         printk(KERN_ERR PFX "Unable to allocate pci memory for cq\n");
1525                         nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1526                         kfree(nescq);
1527                         return ERR_PTR(-ENOMEM);
1528                 }
1529
1530                 nescq->hw_cq.cq_vbase = mem;
1531                 nescq->hw_cq.cq_head = 0;
1532                 nes_debug(NES_DBG_CQ, "CQ%u virtual address @ %p, phys = 0x%08X\n",
1533                                 nescq->hw_cq.cq_number, nescq->hw_cq.cq_vbase,
1534                                 (u32)nescq->hw_cq.cq_pbase);
1535         }
1536
1537         nescq->hw_cq.ce_handler = nes_iwarp_ce_handler;
1538         spin_lock_init(&nescq->lock);
1539
1540         /* send CreateCQ request to CQP */
1541         cqp_request = nes_get_cqp_request(nesdev);
1542         if (cqp_request == NULL) {
1543                 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1544                 if (!context)
1545                         pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1546                                         nescq->hw_cq.cq_pbase);
1547                 else {
1548                         pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1549                                             nespbl->pbl_vbase, nespbl->pbl_pbase);
1550                         kfree(nespbl);
1551                 }
1552
1553                 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1554                 kfree(nescq);
1555                 return ERR_PTR(-ENOMEM);
1556         }
1557         cqp_request->waiting = 1;
1558         cqp_wqe = &cqp_request->cqp_wqe;
1559
1560         opcode = NES_CQP_CREATE_CQ | NES_CQP_CQ_CEQ_VALID |
1561                         NES_CQP_CQ_CHK_OVERFLOW |
1562                         NES_CQP_CQ_CEQE_MASK | ((u32)nescq->hw_cq.cq_size << 16);
1563
1564         spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1565
1566         if (pbl_entries != 1) {
1567                 if (pbl_entries > 32) {
1568                         /* use 4k pbl */
1569                         nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 4k PBL\n", pbl_entries);
1570                         if (nesadapter->free_4kpbl == 0) {
1571                                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1572                                 nes_free_cqp_request(nesdev, cqp_request);
1573                                 if (!context)
1574                                         pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1575                                                         nescq->hw_cq.cq_pbase);
1576                                 else {
1577                                         pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1578                                                             nespbl->pbl_vbase, nespbl->pbl_pbase);
1579                                         kfree(nespbl);
1580                                 }
1581                                 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1582                                 kfree(nescq);
1583                                 return ERR_PTR(-ENOMEM);
1584                         } else {
1585                                 opcode |= (NES_CQP_CQ_VIRT | NES_CQP_CQ_4KB_CHUNK);
1586                                 nescq->virtual_cq = 2;
1587                                 nesadapter->free_4kpbl--;
1588                         }
1589                 } else {
1590                         /* use 256 byte pbl */
1591                         nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 256 byte PBL\n", pbl_entries);
1592                         if (nesadapter->free_256pbl == 0) {
1593                                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1594                                 nes_free_cqp_request(nesdev, cqp_request);
1595                                 if (!context)
1596                                         pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1597                                                         nescq->hw_cq.cq_pbase);
1598                                 else {
1599                                         pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1600                                                             nespbl->pbl_vbase, nespbl->pbl_pbase);
1601                                         kfree(nespbl);
1602                                 }
1603                                 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1604                                 kfree(nescq);
1605                                 return ERR_PTR(-ENOMEM);
1606                         } else {
1607                                 opcode |= NES_CQP_CQ_VIRT;
1608                                 nescq->virtual_cq = 1;
1609                                 nesadapter->free_256pbl--;
1610                         }
1611                 }
1612         }
1613
1614         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1615
1616         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1617         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1618         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1619                         (nescq->hw_cq.cq_number | ((u32)nesdev->ceq_index << 16)));
1620
1621         if (context) {
1622                 if (pbl_entries != 1)
1623                         u64temp = (u64)nespbl->pbl_pbase;
1624                 else
1625                         u64temp = le64_to_cpu(nespbl->pbl_vbase[0]);
1626                 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX,
1627                                 nes_ucontext->mmap_db_index[0]);
1628         } else {
1629                 u64temp = (u64)nescq->hw_cq.cq_pbase;
1630                 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX] = 0;
1631         }
1632         set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_PBL_LOW_IDX, u64temp);
1633         cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] = 0;
1634         u64temp = (u64)(unsigned long)&nescq->hw_cq;
1635         cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_LOW_IDX] =
1636                         cpu_to_le32((u32)(u64temp >> 1));
1637         cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] =
1638                         cpu_to_le32(((u32)((u64temp) >> 33)) & 0x7FFFFFFF);
1639
1640         atomic_set(&cqp_request->refcount, 2);
1641         nes_post_cqp_request(nesdev, cqp_request);
1642
1643         /* Wait for CQP */
1644         nes_debug(NES_DBG_CQ, "Waiting for create iWARP CQ%u to complete.\n",
1645                         nescq->hw_cq.cq_number);
1646         ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1647                         NES_EVENT_TIMEOUT * 2);
1648         nes_debug(NES_DBG_CQ, "Create iWARP CQ%u completed, wait_event_timeout ret = %d.\n",
1649                         nescq->hw_cq.cq_number, ret);
1650         if ((!ret) || (cqp_request->major_code)) {
1651                 nes_put_cqp_request(nesdev, cqp_request);
1652                 if (!context)
1653                         pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1654                                         nescq->hw_cq.cq_pbase);
1655                 else {
1656                         pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1657                                             nespbl->pbl_vbase, nespbl->pbl_pbase);
1658                         kfree(nespbl);
1659                 }
1660                 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1661                 kfree(nescq);
1662                 return ERR_PTR(-EIO);
1663         }
1664         nes_put_cqp_request(nesdev, cqp_request);
1665
1666         if (context) {
1667                 /* free the nespbl */
1668                 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1669                                 nespbl->pbl_pbase);
1670                 kfree(nespbl);
1671                 resp.cq_id = nescq->hw_cq.cq_number;
1672                 resp.cq_size = nescq->hw_cq.cq_size;
1673                 resp.mmap_db_index = 0;
1674                 if (ib_copy_to_udata(udata, &resp, sizeof resp - sizeof resp.reserved)) {
1675                         nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1676                         kfree(nescq);
1677                         return ERR_PTR(-EFAULT);
1678                 }
1679         }
1680
1681         return &nescq->ibcq;
1682 }
1683
1684
1685 /**
1686  * nes_destroy_cq
1687  */
1688 static int nes_destroy_cq(struct ib_cq *ib_cq)
1689 {
1690         struct nes_cq *nescq;
1691         struct nes_device *nesdev;
1692         struct nes_vnic *nesvnic;
1693         struct nes_adapter *nesadapter;
1694         struct nes_hw_cqp_wqe *cqp_wqe;
1695         struct nes_cqp_request *cqp_request;
1696         unsigned long flags;
1697         u32 opcode = 0;
1698         int ret;
1699
1700         if (ib_cq == NULL)
1701                 return 0;
1702
1703         nescq = to_nescq(ib_cq);
1704         nesvnic = to_nesvnic(ib_cq->device);
1705         nesdev = nesvnic->nesdev;
1706         nesadapter = nesdev->nesadapter;
1707
1708         nes_debug(NES_DBG_CQ, "Destroy CQ%u\n", nescq->hw_cq.cq_number);
1709
1710         /* Send DestroyCQ request to CQP */
1711         cqp_request = nes_get_cqp_request(nesdev);
1712         if (cqp_request == NULL) {
1713                 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1714                 return -ENOMEM;
1715         }
1716         cqp_request->waiting = 1;
1717         cqp_wqe = &cqp_request->cqp_wqe;
1718         opcode = NES_CQP_DESTROY_CQ | (nescq->hw_cq.cq_size << 16);
1719         spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1720         if (nescq->virtual_cq == 1) {
1721                 nesadapter->free_256pbl++;
1722                 if (nesadapter->free_256pbl > nesadapter->max_256pbl) {
1723                         printk(KERN_ERR PFX "%s: free 256B PBLs(%u) has exceeded the max(%u)\n",
1724                                         __func__, nesadapter->free_256pbl, nesadapter->max_256pbl);
1725                 }
1726         } else if (nescq->virtual_cq == 2) {
1727                 nesadapter->free_4kpbl++;
1728                 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl) {
1729                         printk(KERN_ERR PFX "%s: free 4K PBLs(%u) has exceeded the max(%u)\n",
1730                                         __func__, nesadapter->free_4kpbl, nesadapter->max_4kpbl);
1731                 }
1732                 opcode |= NES_CQP_CQ_4KB_CHUNK;
1733         }
1734
1735         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1736
1737         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1738         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1739         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1740                 (nescq->hw_cq.cq_number | ((u32)PCI_FUNC(nesdev->pcidev->devfn) << 16)));
1741         if (!nescq->mcrqf)
1742                 nes_free_resource(nesadapter, nesadapter->allocated_cqs, nescq->hw_cq.cq_number);
1743
1744         atomic_set(&cqp_request->refcount, 2);
1745         nes_post_cqp_request(nesdev, cqp_request);
1746
1747         /* Wait for CQP */
1748         nes_debug(NES_DBG_CQ, "Waiting for destroy iWARP CQ%u to complete.\n",
1749                         nescq->hw_cq.cq_number);
1750         ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1751                         NES_EVENT_TIMEOUT);
1752         nes_debug(NES_DBG_CQ, "Destroy iWARP CQ%u completed, wait_event_timeout ret = %u,"
1753                         " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1754                         nescq->hw_cq.cq_number, ret, cqp_request->major_code,
1755                         cqp_request->minor_code);
1756         if (!ret) {
1757                 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy timeout expired\n",
1758                                         nescq->hw_cq.cq_number);
1759                 ret = -ETIME;
1760         } else if (cqp_request->major_code) {
1761                 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy failed\n",
1762                                         nescq->hw_cq.cq_number);
1763                 ret = -EIO;
1764         } else {
1765                 ret = 0;
1766         }
1767         nes_put_cqp_request(nesdev, cqp_request);
1768
1769         if (nescq->cq_mem_size)
1770                 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size,
1771                                     nescq->hw_cq.cq_vbase, nescq->hw_cq.cq_pbase);
1772         kfree(nescq);
1773
1774         return ret;
1775 }
1776
1777 /**
1778  * root_256
1779  */
1780 static u32 root_256(struct nes_device *nesdev,
1781                     struct nes_root_vpbl *root_vpbl,
1782                     struct nes_root_vpbl *new_root,
1783                     u16 pbl_count_4k)
1784 {
1785         u64 leaf_pbl;
1786         int i, j, k;
1787
1788         if (pbl_count_4k == 1) {
1789                 new_root->pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
1790                                                 512, &new_root->pbl_pbase);
1791
1792                 if (new_root->pbl_vbase == NULL)
1793                         return 0;
1794
1795                 leaf_pbl = (u64)root_vpbl->pbl_pbase;
1796                 for (i = 0; i < 16; i++) {
1797                         new_root->pbl_vbase[i].pa_low =
1798                                 cpu_to_le32((u32)leaf_pbl);
1799                         new_root->pbl_vbase[i].pa_high =
1800                                 cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
1801                         leaf_pbl += 256;
1802                 }
1803         } else {
1804                 for (i = 3; i >= 0; i--) {
1805                         j = i * 16;
1806                         root_vpbl->pbl_vbase[j] = root_vpbl->pbl_vbase[i];
1807                         leaf_pbl = le32_to_cpu(root_vpbl->pbl_vbase[j].pa_low) +
1808                             (((u64)le32_to_cpu(root_vpbl->pbl_vbase[j].pa_high))
1809                                 << 32);
1810                         for (k = 1; k < 16; k++) {
1811                                 leaf_pbl += 256;
1812                                 root_vpbl->pbl_vbase[j + k].pa_low =
1813                                                 cpu_to_le32((u32)leaf_pbl);
1814                                 root_vpbl->pbl_vbase[j + k].pa_high =
1815                                     cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
1816                         }
1817                 }
1818         }
1819
1820         return 1;
1821 }
1822
1823
1824 /**
1825  * nes_reg_mr
1826  */
1827 static int nes_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd,
1828                 u32 stag, u64 region_length, struct nes_root_vpbl *root_vpbl,
1829                 dma_addr_t single_buffer, u16 pbl_count_4k,
1830                 u16 residual_page_count_4k, int acc, u64 *iova_start,
1831                 u16 *actual_pbl_cnt, u8 *used_4k_pbls)
1832 {
1833         struct nes_hw_cqp_wqe *cqp_wqe;
1834         struct nes_cqp_request *cqp_request;
1835         unsigned long flags;
1836         int ret;
1837         struct nes_adapter *nesadapter = nesdev->nesadapter;
1838         uint pg_cnt = 0;
1839         u16 pbl_count_256 = 0;
1840         u16 pbl_count = 0;
1841         u8  use_256_pbls = 0;
1842         u8  use_4k_pbls = 0;
1843         u16 use_two_level = (pbl_count_4k > 1) ? 1 : 0;
1844         struct nes_root_vpbl new_root = { 0, NULL, NULL };
1845         u32 opcode = 0;
1846         u16 major_code;
1847
1848         /* Register the region with the adapter */
1849         cqp_request = nes_get_cqp_request(nesdev);
1850         if (cqp_request == NULL) {
1851                 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
1852                 return -ENOMEM;
1853         }
1854         cqp_request->waiting = 1;
1855         cqp_wqe = &cqp_request->cqp_wqe;
1856
1857         if (pbl_count_4k) {
1858                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1859
1860                 pg_cnt = ((pbl_count_4k - 1) * 512) + residual_page_count_4k;
1861                 pbl_count_256 = (pg_cnt + 31) / 32;
1862                 if (pg_cnt <= 32) {
1863                         if (pbl_count_256 <= nesadapter->free_256pbl)
1864                                 use_256_pbls = 1;
1865                         else if (pbl_count_4k <= nesadapter->free_4kpbl)
1866                                 use_4k_pbls = 1;
1867                 } else if (pg_cnt <= 2048) {
1868                         if (((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) &&
1869                             (nesadapter->free_4kpbl > (nesadapter->max_4kpbl >> 1))) {
1870                                 use_4k_pbls = 1;
1871                         } else if ((pbl_count_256 + 1) <= nesadapter->free_256pbl) {
1872                                 use_256_pbls = 1;
1873                                 use_two_level = 1;
1874                         } else if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
1875                                 use_4k_pbls = 1;
1876                         }
1877                 } else {
1878                         if ((pbl_count_4k + 1) <= nesadapter->free_4kpbl)
1879                                 use_4k_pbls = 1;
1880                 }
1881
1882                 if (use_256_pbls) {
1883                         pbl_count = pbl_count_256;
1884                         nesadapter->free_256pbl -= pbl_count + use_two_level;
1885                 } else if (use_4k_pbls) {
1886                         pbl_count =  pbl_count_4k;
1887                         nesadapter->free_4kpbl -= pbl_count + use_two_level;
1888                 } else {
1889                         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1890                         nes_debug(NES_DBG_MR, "Out of Pbls\n");
1891                         nes_free_cqp_request(nesdev, cqp_request);
1892                         return -ENOMEM;
1893                 }
1894
1895                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1896         }
1897
1898         if (use_256_pbls && use_two_level) {
1899                 if (root_256(nesdev, root_vpbl, &new_root, pbl_count_4k) == 1) {
1900                         if (new_root.pbl_pbase != 0)
1901                                 root_vpbl = &new_root;
1902                 } else {
1903                         spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1904                         nesadapter->free_256pbl += pbl_count_256 + use_two_level;
1905                         use_256_pbls = 0;
1906
1907                         if (pbl_count_4k == 1)
1908                                 use_two_level = 0;
1909                         pbl_count = pbl_count_4k;
1910
1911                         if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
1912                                 nesadapter->free_4kpbl -= pbl_count + use_two_level;
1913                                 use_4k_pbls = 1;
1914                         }
1915                         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1916
1917                         if (use_4k_pbls == 0)
1918                                 return -ENOMEM;
1919                 }
1920         }
1921
1922         opcode = NES_CQP_REGISTER_STAG | NES_CQP_STAG_RIGHTS_LOCAL_READ |
1923                                         NES_CQP_STAG_VA_TO | NES_CQP_STAG_MR;
1924         if (acc & IB_ACCESS_LOCAL_WRITE)
1925                 opcode |= NES_CQP_STAG_RIGHTS_LOCAL_WRITE;
1926         if (acc & IB_ACCESS_REMOTE_WRITE)
1927                 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_REM_ACC_EN;
1928         if (acc & IB_ACCESS_REMOTE_READ)
1929                 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_READ | NES_CQP_STAG_REM_ACC_EN;
1930         if (acc & IB_ACCESS_MW_BIND)
1931                 opcode |= NES_CQP_STAG_RIGHTS_WINDOW_BIND | NES_CQP_STAG_REM_ACC_EN;
1932
1933         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1934         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1935         set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, *iova_start);
1936         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, region_length);
1937
1938         cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] =
1939                         cpu_to_le32((u32)(region_length >> 8) & 0xff000000);
1940         cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |=
1941                         cpu_to_le32(nespd->pd_id & 0x00007fff);
1942         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
1943
1944         if (pbl_count == 0) {
1945                 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, single_buffer);
1946         } else {
1947                 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, root_vpbl->pbl_pbase);
1948                 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, pbl_count);
1949                 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX, (pg_cnt * 8));
1950
1951                 if (use_4k_pbls)
1952                         cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE);
1953         }
1954         barrier();
1955
1956         atomic_set(&cqp_request->refcount, 2);
1957         nes_post_cqp_request(nesdev, cqp_request);
1958
1959         /* Wait for CQP */
1960         ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1961                         NES_EVENT_TIMEOUT);
1962         nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
1963                         " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1964                         stag, ret, cqp_request->major_code, cqp_request->minor_code);
1965         major_code = cqp_request->major_code;
1966         nes_put_cqp_request(nesdev, cqp_request);
1967
1968         if ((!ret || major_code) && pbl_count != 0) {
1969                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1970                 if (use_256_pbls)
1971                         nesadapter->free_256pbl += pbl_count + use_two_level;
1972                 else if (use_4k_pbls)
1973                         nesadapter->free_4kpbl += pbl_count + use_two_level;
1974                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1975         }
1976         if (new_root.pbl_pbase)
1977                 pci_free_consistent(nesdev->pcidev, 512, new_root.pbl_vbase,
1978                                     new_root.pbl_pbase);
1979
1980         if (!ret)
1981                 return -ETIME;
1982         else if (major_code)
1983                 return -EIO;
1984
1985         *actual_pbl_cnt = pbl_count + use_two_level;
1986         *used_4k_pbls = use_4k_pbls;
1987         return 0;
1988 }
1989
1990
1991 /**
1992  * nes_reg_phys_mr
1993  */
1994 struct ib_mr *nes_reg_phys_mr(struct ib_pd *ib_pd, u64 addr, u64 size,
1995                 int acc, u64 *iova_start)
1996 {
1997         u64 region_length;
1998         struct nes_pd *nespd = to_nespd(ib_pd);
1999         struct nes_vnic *nesvnic = to_nesvnic(ib_pd->device);
2000         struct nes_device *nesdev = nesvnic->nesdev;
2001         struct nes_adapter *nesadapter = nesdev->nesadapter;
2002         struct nes_mr *nesmr;
2003         struct ib_mr *ibmr;
2004         struct nes_vpbl vpbl;
2005         struct nes_root_vpbl root_vpbl;
2006         u32 stag;
2007         unsigned long mask;
2008         u32 stag_index = 0;
2009         u32 next_stag_index = 0;
2010         u32 driver_key = 0;
2011         int err = 0;
2012         int ret = 0;
2013         u16 pbl_count = 0;
2014         u8 single_page = 1;
2015         u8 stag_key = 0;
2016
2017         region_length = 0;
2018         vpbl.pbl_vbase = NULL;
2019         root_vpbl.pbl_vbase = NULL;
2020         root_vpbl.pbl_pbase = 0;
2021
2022         get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2023         stag_key = (u8)next_stag_index;
2024
2025         driver_key = 0;
2026
2027         next_stag_index >>= 8;
2028         next_stag_index %= nesadapter->max_mr;
2029
2030         if ((addr ^ *iova_start) & ~PAGE_MASK)
2031                 return ERR_PTR(-EINVAL);
2032
2033         err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs, nesadapter->max_mr,
2034                         &stag_index, &next_stag_index, NES_RESOURCE_PHYS_MR);
2035         if (err) {
2036                 return ERR_PTR(err);
2037         }
2038
2039         nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2040         if (!nesmr) {
2041                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2042                 return ERR_PTR(-ENOMEM);
2043         }
2044
2045         /* Allocate a 4K buffer for the PBL */
2046         vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2047                         &vpbl.pbl_pbase);
2048         nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%016lX\n",
2049                         vpbl.pbl_vbase, (unsigned long)vpbl.pbl_pbase);
2050         if (!vpbl.pbl_vbase) {
2051                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2052                 ibmr = ERR_PTR(-ENOMEM);
2053                 kfree(nesmr);
2054                 goto reg_phys_err;
2055         }
2056
2057
2058         mask = !size;
2059
2060         if (mask & ~PAGE_MASK) {
2061                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2062                 nes_debug(NES_DBG_MR, "Invalid buffer addr or size\n");
2063                 ibmr = ERR_PTR(-EINVAL);
2064                 kfree(nesmr);
2065                 goto reg_phys_err;
2066         }
2067
2068         region_length += size;
2069         vpbl.pbl_vbase[0].pa_low = cpu_to_le32((u32)addr & PAGE_MASK);
2070         vpbl.pbl_vbase[0].pa_high = cpu_to_le32((u32)((((u64)addr) >> 32)));
2071
2072         stag = stag_index << 8;
2073         stag |= driver_key;
2074         stag += (u32)stag_key;
2075
2076         nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%016lX,"
2077                         " length = 0x%016lX, index = 0x%08X\n",
2078                         stag, (unsigned long)*iova_start, (unsigned long)region_length, stag_index);
2079
2080         /* Make the leaf PBL the root if only one PBL */
2081         root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2082
2083         if (single_page) {
2084                 pbl_count = 0;
2085         } else {
2086                 pbl_count = 1;
2087         }
2088         ret = nes_reg_mr(nesdev, nespd, stag, region_length, &root_vpbl,
2089                         addr, pbl_count, 1, acc, iova_start,
2090                         &nesmr->pbls_used, &nesmr->pbl_4k);
2091
2092         if (ret == 0) {
2093                 nesmr->ibmr.rkey = stag;
2094                 nesmr->ibmr.lkey = stag;
2095                 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2096                 ibmr = &nesmr->ibmr;
2097         } else {
2098                 kfree(nesmr);
2099                 ibmr = ERR_PTR(-ENOMEM);
2100         }
2101
2102 reg_phys_err:
2103         /* single PBL case */
2104         pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, vpbl.pbl_pbase);
2105         return ibmr;
2106 }
2107
2108
2109 /**
2110  * nes_get_dma_mr
2111  */
2112 static struct ib_mr *nes_get_dma_mr(struct ib_pd *pd, int acc)
2113 {
2114         u64 kva = 0;
2115
2116         nes_debug(NES_DBG_MR, "\n");
2117
2118         return nes_reg_phys_mr(pd, 0, 0xffffffffffULL, acc, &kva);
2119 }
2120
2121 /**
2122  * nes_reg_user_mr
2123  */
2124 static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
2125                 u64 virt, int acc, struct ib_udata *udata)
2126 {
2127         u64 iova_start;
2128         __le64 *pbl;
2129         u64 region_length;
2130         dma_addr_t last_dma_addr = 0;
2131         dma_addr_t first_dma_addr = 0;
2132         struct nes_pd *nespd = to_nespd(pd);
2133         struct nes_vnic *nesvnic = to_nesvnic(pd->device);
2134         struct nes_device *nesdev = nesvnic->nesdev;
2135         struct nes_adapter *nesadapter = nesdev->nesadapter;
2136         struct ib_mr *ibmr = ERR_PTR(-EINVAL);
2137         struct scatterlist *sg;
2138         struct nes_ucontext *nes_ucontext;
2139         struct nes_pbl *nespbl;
2140         struct nes_mr *nesmr;
2141         struct ib_umem *region;
2142         struct nes_mem_reg_req req;
2143         struct nes_vpbl vpbl;
2144         struct nes_root_vpbl root_vpbl;
2145         int entry, page_index;
2146         int page_count = 0;
2147         int err, pbl_depth = 0;
2148         int chunk_pages;
2149         int ret;
2150         u32 stag;
2151         u32 stag_index = 0;
2152         u32 next_stag_index;
2153         u32 driver_key;
2154         u32 root_pbl_index = 0;
2155         u32 cur_pbl_index = 0;
2156         u32 skip_pages;
2157         u16 pbl_count;
2158         u8 single_page = 1;
2159         u8 stag_key;
2160         int first_page = 1;
2161
2162         region = ib_umem_get(pd->uobject->context, start, length, acc, 0);
2163         if (IS_ERR(region)) {
2164                 return (struct ib_mr *)region;
2165         }
2166
2167         nes_debug(NES_DBG_MR, "User base = 0x%lX, Virt base = 0x%lX, length = %u,"
2168                         " offset = %u, page size = %u.\n",
2169                         (unsigned long int)start, (unsigned long int)virt, (u32)length,
2170                         ib_umem_offset(region), region->page_size);
2171
2172         skip_pages = ((u32)ib_umem_offset(region)) >> 12;
2173
2174         if (ib_copy_from_udata(&req, udata, sizeof(req))) {
2175                 ib_umem_release(region);
2176                 return ERR_PTR(-EFAULT);
2177         }
2178         nes_debug(NES_DBG_MR, "Memory Registration type = %08X.\n", req.reg_type);
2179
2180         switch (req.reg_type) {
2181                 case IWNES_MEMREG_TYPE_MEM:
2182                         pbl_depth = 0;
2183                         region_length = 0;
2184                         vpbl.pbl_vbase = NULL;
2185                         root_vpbl.pbl_vbase = NULL;
2186                         root_vpbl.pbl_pbase = 0;
2187
2188                         get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2189                         stag_key = (u8)next_stag_index;
2190
2191                         driver_key = next_stag_index & 0x70000000;
2192
2193                         next_stag_index >>= 8;
2194                         next_stag_index %= nesadapter->max_mr;
2195
2196                         err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
2197                                         nesadapter->max_mr, &stag_index, &next_stag_index, NES_RESOURCE_USER_MR);
2198                         if (err) {
2199                                 ib_umem_release(region);
2200                                 return ERR_PTR(err);
2201                         }
2202
2203                         nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2204                         if (!nesmr) {
2205                                 ib_umem_release(region);
2206                                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2207                                 return ERR_PTR(-ENOMEM);
2208                         }
2209                         nesmr->region = region;
2210
2211                         for_each_sg(region->sg_head.sgl, sg, region->nmap, entry) {
2212                                 if (sg_dma_address(sg) & ~PAGE_MASK) {
2213                                         ib_umem_release(region);
2214                                         nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2215                                         nes_debug(NES_DBG_MR, "Unaligned Memory Buffer: 0x%x\n",
2216                                                   (unsigned int) sg_dma_address(sg));
2217                                         ibmr = ERR_PTR(-EINVAL);
2218                                         kfree(nesmr);
2219                                         goto reg_user_mr_err;
2220                                 }
2221
2222                                 if (!sg_dma_len(sg)) {
2223                                         ib_umem_release(region);
2224                                         nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2225                                                           stag_index);
2226                                         nes_debug(NES_DBG_MR, "Invalid Buffer Size\n");
2227                                         ibmr = ERR_PTR(-EINVAL);
2228                                         kfree(nesmr);
2229                                         goto reg_user_mr_err;
2230                                 }
2231
2232                                 region_length += sg_dma_len(sg);
2233                                 chunk_pages = sg_dma_len(sg) >> 12;
2234                                 region_length -= skip_pages << 12;
2235                                 for (page_index = skip_pages; page_index < chunk_pages; page_index++) {
2236                                         skip_pages = 0;
2237                                         if ((page_count != 0) && (page_count << 12) - (ib_umem_offset(region) & (4096 - 1)) >= region->length)
2238                                                 goto enough_pages;
2239                                         if ((page_count&0x01FF) == 0) {
2240                                                 if (page_count >= 1024 * 512) {
2241                                                         ib_umem_release(region);
2242                                                         nes_free_resource(nesadapter,
2243                                                                           nesadapter->allocated_mrs, stag_index);
2244                                                         kfree(nesmr);
2245                                                         ibmr = ERR_PTR(-E2BIG);
2246                                                         goto reg_user_mr_err;
2247                                                 }
2248                                                 if (root_pbl_index == 1) {
2249                                                         root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
2250                                                                         8192, &root_vpbl.pbl_pbase);
2251                                                         nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2252                                                                   root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2253                                                         if (!root_vpbl.pbl_vbase) {
2254                                                                 ib_umem_release(region);
2255                                                                 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2256                                                                                     vpbl.pbl_pbase);
2257                                                                 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2258                                                                                   stag_index);
2259                                                                 kfree(nesmr);
2260                                                                 ibmr = ERR_PTR(-ENOMEM);
2261                                                                 goto reg_user_mr_err;
2262                                                         }
2263                                                         root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024,
2264                                                                         GFP_KERNEL);
2265                                                         if (!root_vpbl.leaf_vpbl) {
2266                                                                 ib_umem_release(region);
2267                                                                 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2268                                                                                     root_vpbl.pbl_pbase);
2269                                                                 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2270                                                                                     vpbl.pbl_pbase);
2271                                                                 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2272                                                                                   stag_index);
2273                                                                 kfree(nesmr);
2274                                                                 ibmr = ERR_PTR(-ENOMEM);
2275                                                                 goto reg_user_mr_err;
2276                                                         }
2277                                                         root_vpbl.pbl_vbase[0].pa_low =
2278                                                                         cpu_to_le32((u32)vpbl.pbl_pbase);
2279                                                         root_vpbl.pbl_vbase[0].pa_high =
2280                                                                         cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2281                                                         root_vpbl.leaf_vpbl[0] = vpbl;
2282                                                 }
2283                                                 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2284                                                                 &vpbl.pbl_pbase);
2285                                                 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%08X\n",
2286                                                           vpbl.pbl_vbase, (unsigned int)vpbl.pbl_pbase);
2287                                                 if (!vpbl.pbl_vbase) {
2288                                                         ib_umem_release(region);
2289                                                         nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2290                                                         ibmr = ERR_PTR(-ENOMEM);
2291                                                         kfree(nesmr);
2292                                                         goto reg_user_mr_err;
2293                                                 }
2294                                                 if (1 <= root_pbl_index) {
2295                                                         root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2296                                                                         cpu_to_le32((u32)vpbl.pbl_pbase);
2297                                                         root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2298                                                                         cpu_to_le32((u32)((((u64)vpbl.pbl_pbase)>>32)));
2299                                                         root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2300                                                 }
2301                                                 root_pbl_index++;
2302                                                 cur_pbl_index = 0;
2303                                         }
2304                                         if (single_page) {
2305                                                 if (page_count != 0) {
2306                                                         if ((last_dma_addr+4096) !=
2307                                                                         (sg_dma_address(sg)+
2308                                                                         (page_index*4096)))
2309                                                                 single_page = 0;
2310                                                         last_dma_addr = sg_dma_address(sg)+
2311                                                                         (page_index*4096);
2312                                                 } else {
2313                                                         first_dma_addr = sg_dma_address(sg)+
2314                                                                         (page_index*4096);
2315                                                         last_dma_addr = first_dma_addr;
2316                                                 }
2317                                         }
2318
2319                                         vpbl.pbl_vbase[cur_pbl_index].pa_low =
2320                                                         cpu_to_le32((u32)(sg_dma_address(sg)+
2321                                                         (page_index*4096)));
2322                                         vpbl.pbl_vbase[cur_pbl_index].pa_high =
2323                                                         cpu_to_le32((u32)((((u64)(sg_dma_address(sg)+
2324                                                         (page_index*4096))) >> 32)));
2325                                         cur_pbl_index++;
2326                                         page_count++;
2327                                 }
2328                         }
2329
2330                         enough_pages:
2331                         nes_debug(NES_DBG_MR, "calculating stag, stag_index=0x%08x, driver_key=0x%08x,"
2332                                         " stag_key=0x%08x\n",
2333                                         stag_index, driver_key, stag_key);
2334                         stag = stag_index << 8;
2335                         stag |= driver_key;
2336                         stag += (u32)stag_key;
2337
2338                         iova_start = virt;
2339                         /* Make the leaf PBL the root if only one PBL */
2340                         if (root_pbl_index == 1) {
2341                                 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2342                         }
2343
2344                         if (single_page) {
2345                                 pbl_count = 0;
2346                         } else {
2347                                 pbl_count = root_pbl_index;
2348                                 first_dma_addr = 0;
2349                         }
2350                         nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%08X, length = 0x%08X,"
2351                                         " index = 0x%08X, region->length=0x%08llx, pbl_count = %u\n",
2352                                         stag, (unsigned int)iova_start,
2353                                         (unsigned int)region_length, stag_index,
2354                                         (unsigned long long)region->length, pbl_count);
2355                         ret = nes_reg_mr(nesdev, nespd, stag, region->length, &root_vpbl,
2356                                          first_dma_addr, pbl_count, (u16)cur_pbl_index, acc,
2357                                          &iova_start, &nesmr->pbls_used, &nesmr->pbl_4k);
2358
2359                         nes_debug(NES_DBG_MR, "ret=%d\n", ret);
2360
2361                         if (ret == 0) {
2362                                 nesmr->ibmr.rkey = stag;
2363                                 nesmr->ibmr.lkey = stag;
2364                                 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2365                                 ibmr = &nesmr->ibmr;
2366                         } else {
2367                                 ib_umem_release(region);
2368                                 kfree(nesmr);
2369                                 ibmr = ERR_PTR(-ENOMEM);
2370                         }
2371
2372                         reg_user_mr_err:
2373                         /* free the resources */
2374                         if (root_pbl_index == 1) {
2375                                 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2376                                                 vpbl.pbl_pbase);
2377                         } else {
2378                                 for (page_index=0; page_index<root_pbl_index; page_index++) {
2379                                         pci_free_consistent(nesdev->pcidev, 4096,
2380                                                         root_vpbl.leaf_vpbl[page_index].pbl_vbase,
2381                                                         root_vpbl.leaf_vpbl[page_index].pbl_pbase);
2382                                 }
2383                                 kfree(root_vpbl.leaf_vpbl);
2384                                 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2385                                                 root_vpbl.pbl_pbase);
2386                         }
2387
2388                         nes_debug(NES_DBG_MR, "Leaving, ibmr=%p", ibmr);
2389
2390                         return ibmr;
2391                 case IWNES_MEMREG_TYPE_QP:
2392                 case IWNES_MEMREG_TYPE_CQ:
2393                         if (!region->length) {
2394                                 nes_debug(NES_DBG_MR, "Unable to register zero length region for CQ\n");
2395                                 ib_umem_release(region);
2396                                 return ERR_PTR(-EINVAL);
2397                         }
2398                         nespbl = kzalloc(sizeof(*nespbl), GFP_KERNEL);
2399                         if (!nespbl) {
2400                                 ib_umem_release(region);
2401                                 return ERR_PTR(-ENOMEM);
2402                         }
2403                         nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2404                         if (!nesmr) {
2405                                 ib_umem_release(region);
2406                                 kfree(nespbl);
2407                                 return ERR_PTR(-ENOMEM);
2408                         }
2409                         nesmr->region = region;
2410                         nes_ucontext = to_nesucontext(pd->uobject->context);
2411                         pbl_depth = region->length >> 12;
2412                         pbl_depth += (region->length & (4096-1)) ? 1 : 0;
2413                         nespbl->pbl_size = pbl_depth*sizeof(u64);
2414                         if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2415                                 nes_debug(NES_DBG_MR, "Attempting to allocate QP PBL memory");
2416                         } else {
2417                                 nes_debug(NES_DBG_MR, "Attempting to allocate CP PBL memory");
2418                         }
2419
2420                         nes_debug(NES_DBG_MR, " %u bytes, %u entries.\n",
2421                                         nespbl->pbl_size, pbl_depth);
2422                         pbl = pci_alloc_consistent(nesdev->pcidev, nespbl->pbl_size,
2423                                         &nespbl->pbl_pbase);
2424                         if (!pbl) {
2425                                 ib_umem_release(region);
2426                                 kfree(nesmr);
2427                                 kfree(nespbl);
2428                                 nes_debug(NES_DBG_MR, "Unable to allocate PBL memory\n");
2429                                 return ERR_PTR(-ENOMEM);
2430                         }
2431
2432                         nespbl->pbl_vbase = (u64 *)pbl;
2433                         nespbl->user_base = start;
2434                         nes_debug(NES_DBG_MR, "Allocated PBL memory, %u bytes, pbl_pbase=%lx,"
2435                                         " pbl_vbase=%p user_base=0x%lx\n",
2436                                   nespbl->pbl_size, (unsigned long) nespbl->pbl_pbase,
2437                                   (void *) nespbl->pbl_vbase, nespbl->user_base);
2438
2439                         for_each_sg(region->sg_head.sgl, sg, region->nmap, entry) {
2440                                 chunk_pages = sg_dma_len(sg) >> 12;
2441                                 chunk_pages += (sg_dma_len(sg) & (4096-1)) ? 1 : 0;
2442                                 if (first_page) {
2443                                         nespbl->page = sg_page(sg);
2444                                         first_page = 0;
2445                                 }
2446
2447                                 for (page_index = 0; page_index < chunk_pages; page_index++) {
2448                                         ((__le32 *)pbl)[0] = cpu_to_le32((u32)
2449                                                         (sg_dma_address(sg)+
2450                                                         (page_index*4096)));
2451                                         ((__le32 *)pbl)[1] = cpu_to_le32(((u64)
2452                                                         (sg_dma_address(sg)+
2453                                                         (page_index*4096)))>>32);
2454                                         nes_debug(NES_DBG_MR, "pbl=%p, *pbl=0x%016llx, 0x%08x%08x\n", pbl,
2455                                                   (unsigned long long)*pbl,
2456                                                   le32_to_cpu(((__le32 *)pbl)[1]), le32_to_cpu(((__le32 *)pbl)[0]));
2457                                         pbl++;
2458                                 }
2459                         }
2460
2461                         if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2462                                 list_add_tail(&nespbl->list, &nes_ucontext->qp_reg_mem_list);
2463                         } else {
2464                                 list_add_tail(&nespbl->list, &nes_ucontext->cq_reg_mem_list);
2465                         }
2466                         nesmr->ibmr.rkey = -1;
2467                         nesmr->ibmr.lkey = -1;
2468                         nesmr->mode = req.reg_type;
2469                         return &nesmr->ibmr;
2470         }
2471
2472         ib_umem_release(region);
2473         return ERR_PTR(-ENOSYS);
2474 }
2475
2476
2477 /**
2478  * nes_dereg_mr
2479  */
2480 static int nes_dereg_mr(struct ib_mr *ib_mr)
2481 {
2482         struct nes_mr *nesmr = to_nesmr(ib_mr);
2483         struct nes_vnic *nesvnic = to_nesvnic(ib_mr->device);
2484         struct nes_device *nesdev = nesvnic->nesdev;
2485         struct nes_adapter *nesadapter = nesdev->nesadapter;
2486         struct nes_hw_cqp_wqe *cqp_wqe;
2487         struct nes_cqp_request *cqp_request;
2488         unsigned long flags;
2489         int ret;
2490         u16 major_code;
2491         u16 minor_code;
2492
2493
2494         if (nesmr->pages)
2495                 pci_free_consistent(nesdev->pcidev,
2496                                     nesmr->max_pages * sizeof(u64),
2497                                     nesmr->pages,
2498                                     nesmr->paddr);
2499
2500         if (nesmr->region) {
2501                 ib_umem_release(nesmr->region);
2502         }
2503         if (nesmr->mode != IWNES_MEMREG_TYPE_MEM) {
2504                 kfree(nesmr);
2505                 return 0;
2506         }
2507
2508         /* Deallocate the region with the adapter */
2509
2510         cqp_request = nes_get_cqp_request(nesdev);
2511         if (cqp_request == NULL) {
2512                 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
2513                 return -ENOMEM;
2514         }
2515         cqp_request->waiting = 1;
2516         cqp_wqe = &cqp_request->cqp_wqe;
2517
2518         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2519         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2520                         NES_CQP_DEALLOCATE_STAG | NES_CQP_STAG_VA_TO |
2521                         NES_CQP_STAG_DEALLOC_PBLS | NES_CQP_STAG_MR);
2522         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ib_mr->rkey);
2523
2524         atomic_set(&cqp_request->refcount, 2);
2525         nes_post_cqp_request(nesdev, cqp_request);
2526
2527         /* Wait for CQP */
2528         nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X completed\n", ib_mr->rkey);
2529         ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2530                         NES_EVENT_TIMEOUT);
2531         nes_debug(NES_DBG_MR, "Deallocate STag 0x%08X completed, wait_event_timeout ret = %u,"
2532                         " CQP Major:Minor codes = 0x%04X:0x%04X\n",
2533                         ib_mr->rkey, ret, cqp_request->major_code, cqp_request->minor_code);
2534
2535         major_code = cqp_request->major_code;
2536         minor_code = cqp_request->minor_code;
2537
2538         nes_put_cqp_request(nesdev, cqp_request);
2539
2540         if (!ret) {
2541                 nes_debug(NES_DBG_MR, "Timeout waiting to destroy STag,"
2542                                 " ib_mr=%p, rkey = 0x%08X\n",
2543                                 ib_mr, ib_mr->rkey);
2544                 return -ETIME;
2545         } else if (major_code) {
2546                 nes_debug(NES_DBG_MR, "Error (0x%04X:0x%04X) while attempting"
2547                                 " to destroy STag, ib_mr=%p, rkey = 0x%08X\n",
2548                                 major_code, minor_code, ib_mr, ib_mr->rkey);
2549                 return -EIO;
2550         }
2551
2552         if (nesmr->pbls_used != 0) {
2553                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2554                 if (nesmr->pbl_4k) {
2555                         nesadapter->free_4kpbl += nesmr->pbls_used;
2556                         if (nesadapter->free_4kpbl > nesadapter->max_4kpbl)
2557                                 printk(KERN_ERR PFX "free 4KB PBLs(%u) has "
2558                                         "exceeded the max(%u)\n",
2559                                         nesadapter->free_4kpbl,
2560                                         nesadapter->max_4kpbl);
2561                 } else {
2562                         nesadapter->free_256pbl += nesmr->pbls_used;
2563                         if (nesadapter->free_256pbl > nesadapter->max_256pbl)
2564                                 printk(KERN_ERR PFX "free 256B PBLs(%u) has "
2565                                         "exceeded the max(%u)\n",
2566                                         nesadapter->free_256pbl,
2567                                         nesadapter->max_256pbl);
2568                 }
2569                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2570         }
2571         nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2572                         (ib_mr->rkey & 0x0fffff00) >> 8);
2573
2574         kfree(nesmr);
2575
2576         return 0;
2577 }
2578
2579
2580 /**
2581  * show_rev
2582  */
2583 static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
2584                         char *buf)
2585 {
2586         struct nes_ib_device *nesibdev =
2587                         container_of(dev, struct nes_ib_device, ibdev.dev);
2588         struct nes_vnic *nesvnic = nesibdev->nesvnic;
2589
2590         nes_debug(NES_DBG_INIT, "\n");
2591         return sprintf(buf, "%x\n", nesvnic->nesdev->nesadapter->hw_rev);
2592 }
2593
2594
2595 /**
2596  * show_hca
2597  */
2598 static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
2599                         char *buf)
2600 {
2601         nes_debug(NES_DBG_INIT, "\n");
2602         return sprintf(buf, "NES020\n");
2603 }
2604
2605
2606 /**
2607  * show_board
2608  */
2609 static ssize_t show_board(struct device *dev, struct device_attribute *attr,
2610                           char *buf)
2611 {
2612         nes_debug(NES_DBG_INIT, "\n");
2613         return sprintf(buf, "%.*s\n", 32, "NES020 Board ID");
2614 }
2615
2616
2617 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
2618 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
2619 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
2620
2621 static struct device_attribute *nes_dev_attributes[] = {
2622         &dev_attr_hw_rev,
2623         &dev_attr_hca_type,
2624         &dev_attr_board_id
2625 };
2626
2627
2628 /**
2629  * nes_query_qp
2630  */
2631 static int nes_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2632                 int attr_mask, struct ib_qp_init_attr *init_attr)
2633 {
2634         struct nes_qp *nesqp = to_nesqp(ibqp);
2635
2636         nes_debug(NES_DBG_QP, "\n");
2637
2638         attr->qp_access_flags = 0;
2639         attr->cap.max_send_wr = nesqp->hwqp.sq_size;
2640         attr->cap.max_recv_wr = nesqp->hwqp.rq_size;
2641         attr->cap.max_recv_sge = 1;
2642         if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA)
2643                 attr->cap.max_inline_data = 0;
2644         else
2645                 attr->cap.max_inline_data = 64;
2646
2647         init_attr->event_handler = nesqp->ibqp.event_handler;
2648         init_attr->qp_context = nesqp->ibqp.qp_context;
2649         init_attr->send_cq = nesqp->ibqp.send_cq;
2650         init_attr->recv_cq = nesqp->ibqp.recv_cq;
2651         init_attr->srq = nesqp->ibqp.srq;
2652         init_attr->cap = attr->cap;
2653
2654         return 0;
2655 }
2656
2657
2658 /**
2659  * nes_hw_modify_qp
2660  */
2661 int nes_hw_modify_qp(struct nes_device *nesdev, struct nes_qp *nesqp,
2662                 u32 next_iwarp_state, u32 termlen, u32 wait_completion)
2663 {
2664         struct nes_hw_cqp_wqe *cqp_wqe;
2665         /* struct iw_cm_id *cm_id = nesqp->cm_id; */
2666         /* struct iw_cm_event cm_event; */
2667         struct nes_cqp_request *cqp_request;
2668         int ret;
2669         u16 major_code;
2670
2671         nes_debug(NES_DBG_MOD_QP, "QP%u, refcount=%d\n",
2672                         nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
2673
2674         cqp_request = nes_get_cqp_request(nesdev);
2675         if (cqp_request == NULL) {
2676                 nes_debug(NES_DBG_MOD_QP, "Failed to get a cqp_request.\n");
2677                 return -ENOMEM;
2678         }
2679         if (wait_completion) {
2680                 cqp_request->waiting = 1;
2681         } else {
2682                 cqp_request->waiting = 0;
2683         }
2684         cqp_wqe = &cqp_request->cqp_wqe;
2685
2686         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2687                         NES_CQP_MODIFY_QP | NES_CQP_QP_TYPE_IWARP | next_iwarp_state);
2688         nes_debug(NES_DBG_MOD_QP, "using next_iwarp_state=%08x, wqe_words=%08x\n",
2689                         next_iwarp_state, le32_to_cpu(cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX]));
2690         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2691         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
2692         set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, (u64)nesqp->nesqp_context_pbase);
2693
2694         /* If sending a terminate message, fill in the length (in words) */
2695         if (((next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) == NES_CQP_QP_IWARP_STATE_TERMINATE) &&
2696             !(next_iwarp_state & NES_CQP_QP_TERM_DONT_SEND_TERM_MSG)) {
2697                 termlen = ((termlen + 3) >> 2) << NES_CQP_OP_TERMLEN_SHIFT;
2698                 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_NEW_MSS_IDX, termlen);
2699         }
2700
2701         atomic_set(&cqp_request->refcount, 2);
2702         nes_post_cqp_request(nesdev, cqp_request);
2703
2704         /* Wait for CQP */
2705         if (wait_completion) {
2706                 /* nes_debug(NES_DBG_MOD_QP, "Waiting for modify iWARP QP%u to complete.\n",
2707                                 nesqp->hwqp.qp_id); */
2708                 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2709                                 NES_EVENT_TIMEOUT);
2710                 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u completed, wait_event_timeout ret=%u, "
2711                                 "CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2712                                 nesqp->hwqp.qp_id, ret, cqp_request->major_code, cqp_request->minor_code);
2713                 major_code = cqp_request->major_code;
2714                 if (major_code) {
2715                         nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u failed"
2716                                         "CQP Major:Minor codes = 0x%04X:0x%04X, intended next state = 0x%08X.\n",
2717                                         nesqp->hwqp.qp_id, cqp_request->major_code,
2718                                         cqp_request->minor_code, next_iwarp_state);
2719                 }
2720
2721                 nes_put_cqp_request(nesdev, cqp_request);
2722
2723                 if (!ret)
2724                         return -ETIME;
2725                 else if (major_code)
2726                         return -EIO;
2727                 else
2728                         return 0;
2729         } else {
2730                 return 0;
2731         }
2732 }
2733
2734
2735 /**
2736  * nes_modify_qp
2737  */
2738 int nes_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2739                 int attr_mask, struct ib_udata *udata)
2740 {
2741         struct nes_qp *nesqp = to_nesqp(ibqp);
2742         struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
2743         struct nes_device *nesdev = nesvnic->nesdev;
2744         /* u32 cqp_head; */
2745         /* u32 counter; */
2746         u32 next_iwarp_state = 0;
2747         int err;
2748         unsigned long qplockflags;
2749         int ret;
2750         u16 original_last_aeq;
2751         u8 issue_modify_qp = 0;
2752         u8 dont_wait = 0;
2753
2754         nes_debug(NES_DBG_MOD_QP, "QP%u: QP State=%u, cur QP State=%u,"
2755                         " iwarp_state=0x%X, refcount=%d\n",
2756                         nesqp->hwqp.qp_id, attr->qp_state, nesqp->ibqp_state,
2757                         nesqp->iwarp_state, atomic_read(&nesqp->refcount));
2758
2759         spin_lock_irqsave(&nesqp->lock, qplockflags);
2760
2761         nes_debug(NES_DBG_MOD_QP, "QP%u: hw_iwarp_state=0x%X, hw_tcp_state=0x%X,"
2762                         " QP Access Flags=0x%X, attr_mask = 0x%0x\n",
2763                         nesqp->hwqp.qp_id, nesqp->hw_iwarp_state,
2764                         nesqp->hw_tcp_state, attr->qp_access_flags, attr_mask);
2765
2766         if (attr_mask & IB_QP_STATE) {
2767                 switch (attr->qp_state) {
2768                         case IB_QPS_INIT:
2769                                 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = init\n",
2770                                                 nesqp->hwqp.qp_id);
2771                                 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_IDLE) {
2772                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2773                                         return -EINVAL;
2774                                 }
2775                                 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
2776                                 issue_modify_qp = 1;
2777                                 break;
2778                         case IB_QPS_RTR:
2779                                 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rtr\n",
2780                                                 nesqp->hwqp.qp_id);
2781                                 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_IDLE) {
2782                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2783                                         return -EINVAL;
2784                                 }
2785                                 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
2786                                 issue_modify_qp = 1;
2787                                 break;
2788                         case IB_QPS_RTS:
2789                                 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rts\n",
2790                                                 nesqp->hwqp.qp_id);
2791                                 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_RTS) {
2792                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2793                                         return -EINVAL;
2794                                 }
2795                                 if (nesqp->cm_id == NULL) {
2796                                         nes_debug(NES_DBG_MOD_QP, "QP%u: Failing attempt to move QP to RTS without a CM_ID. \n",
2797                                                         nesqp->hwqp.qp_id );
2798                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2799                                         return -EINVAL;
2800                                 }
2801                                 next_iwarp_state = NES_CQP_QP_IWARP_STATE_RTS;
2802                                 if (nesqp->iwarp_state != NES_CQP_QP_IWARP_STATE_RTS)
2803                                         next_iwarp_state |= NES_CQP_QP_CONTEXT_VALID |
2804                                                         NES_CQP_QP_ARP_VALID | NES_CQP_QP_ORD_VALID;
2805                                 issue_modify_qp = 1;
2806                                 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_ESTABLISHED;
2807                                 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_RTS;
2808                                 nesqp->hte_added = 1;
2809                                 break;
2810                         case IB_QPS_SQD:
2811                                 issue_modify_qp = 1;
2812                                 nes_debug(NES_DBG_MOD_QP, "QP%u: new state=closing. SQ head=%u, SQ tail=%u\n",
2813                                                 nesqp->hwqp.qp_id, nesqp->hwqp.sq_head, nesqp->hwqp.sq_tail);
2814                                 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
2815                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2816                                         return 0;
2817                                 } else {
2818                                         if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
2819                                                 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
2820                                                                 " ignored due to current iWARP state\n",
2821                                                                 nesqp->hwqp.qp_id);
2822                                                 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2823                                                 return -EINVAL;
2824                                         }
2825                                         if (nesqp->hw_iwarp_state != NES_AEQE_IWARP_STATE_RTS) {
2826                                                 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
2827                                                                 " already done based on hw state.\n",
2828                                                                 nesqp->hwqp.qp_id);
2829                                                 issue_modify_qp = 0;
2830                                         }
2831                                         switch (nesqp->hw_iwarp_state) {
2832                                                 case NES_AEQE_IWARP_STATE_CLOSING:
2833                                                         next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
2834                                                         break;
2835                                                 case NES_AEQE_IWARP_STATE_TERMINATE:
2836                                                         next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
2837                                                         break;
2838                                                 case NES_AEQE_IWARP_STATE_ERROR:
2839                                                         next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
2840                                                         break;
2841                                                 default:
2842                                                         next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
2843                                                         nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_CLOSING;
2844                                                         break;
2845                                         }
2846                                 }
2847                                 break;
2848                         case IB_QPS_SQE:
2849                                 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = terminate\n",
2850                                                 nesqp->hwqp.qp_id);
2851                                 if (nesqp->iwarp_state>=(u32)NES_CQP_QP_IWARP_STATE_TERMINATE) {
2852                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2853                                         return -EINVAL;
2854                                 }
2855                                 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
2856                                 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
2857                                 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_TERMINATE;
2858                                 issue_modify_qp = 1;
2859                                 break;
2860                         case IB_QPS_ERR:
2861                         case IB_QPS_RESET:
2862                                 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_ERROR) {
2863                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2864                                         return -EINVAL;
2865                                 }
2866                                 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = error\n",
2867                                                 nesqp->hwqp.qp_id);
2868                                 if (nesqp->term_flags)
2869                                         del_timer(&nesqp->terminate_timer);
2870
2871                                 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
2872                                 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
2873                                         if (nesqp->hte_added) {
2874                                                 nes_debug(NES_DBG_MOD_QP, "set CQP_QP_DEL_HTE\n");
2875                                                 next_iwarp_state |= NES_CQP_QP_DEL_HTE;
2876                                                 nesqp->hte_added = 0;
2877                                         }
2878                                 if ((nesqp->hw_tcp_state > NES_AEQE_TCP_STATE_CLOSED) &&
2879                                                 (nesdev->iw_status) &&
2880                                                 (nesqp->hw_tcp_state != NES_AEQE_TCP_STATE_TIME_WAIT)) {
2881                                         next_iwarp_state |= NES_CQP_QP_RESET;
2882                                 } else {
2883                                         nes_debug(NES_DBG_MOD_QP, "QP%u NOT setting NES_CQP_QP_RESET since TCP state = %u\n",
2884                                                         nesqp->hwqp.qp_id, nesqp->hw_tcp_state);
2885                                         dont_wait = 1;
2886                                 }
2887                                 issue_modify_qp = 1;
2888                                 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_ERROR;
2889                                 break;
2890                         default:
2891                                 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2892                                 return -EINVAL;
2893                                 break;
2894                 }
2895
2896                 nesqp->ibqp_state = attr->qp_state;
2897                 nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
2898                 nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
2899                                 nesqp->iwarp_state);
2900         }
2901
2902         if (attr_mask & IB_QP_ACCESS_FLAGS) {
2903                 if (attr->qp_access_flags & IB_ACCESS_LOCAL_WRITE) {
2904                         nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
2905                                         NES_QPCONTEXT_MISC_RDMA_READ_EN);
2906                         issue_modify_qp = 1;
2907                 }
2908                 if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE) {
2909                         nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN);
2910                         issue_modify_qp = 1;
2911                 }
2912                 if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ) {
2913                         nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_READ_EN);
2914                         issue_modify_qp = 1;
2915                 }
2916                 if (attr->qp_access_flags & IB_ACCESS_MW_BIND) {
2917                         nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_WBIND_EN);
2918                         issue_modify_qp = 1;
2919                 }
2920
2921                 if (nesqp->user_mode) {
2922                         nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
2923                                         NES_QPCONTEXT_MISC_RDMA_READ_EN);
2924                         issue_modify_qp = 1;
2925                 }
2926         }
2927
2928         original_last_aeq = nesqp->last_aeq;
2929         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2930
2931         nes_debug(NES_DBG_MOD_QP, "issue_modify_qp=%u\n", issue_modify_qp);
2932
2933         ret = 0;
2934
2935
2936         if (issue_modify_qp) {
2937                 nes_debug(NES_DBG_MOD_QP, "call nes_hw_modify_qp\n");
2938                 ret = nes_hw_modify_qp(nesdev, nesqp, next_iwarp_state, 0, 1);
2939                 if (ret)
2940                         nes_debug(NES_DBG_MOD_QP, "nes_hw_modify_qp (next_iwarp_state = 0x%08X)"
2941                                         " failed for QP%u.\n",
2942                                         next_iwarp_state, nesqp->hwqp.qp_id);
2943
2944         }
2945
2946         if ((issue_modify_qp) && (nesqp->ibqp_state > IB_QPS_RTS)) {
2947                 nes_debug(NES_DBG_MOD_QP, "QP%u Issued ModifyQP refcount (%d),"
2948                                 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
2949                                 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
2950                                 original_last_aeq, nesqp->last_aeq);
2951                 if (!ret || original_last_aeq != NES_AEQE_AEID_RDMAP_ROE_BAD_LLP_CLOSE) {
2952                         if (dont_wait) {
2953                                 if (nesqp->cm_id && nesqp->hw_tcp_state != 0) {
2954                                         nes_debug(NES_DBG_MOD_QP, "QP%u Queuing fake disconnect for QP refcount (%d),"
2955                                                         " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
2956                                                         nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
2957                                                         original_last_aeq, nesqp->last_aeq);
2958                                         /* this one is for the cm_disconnect thread */
2959                                         spin_lock_irqsave(&nesqp->lock, qplockflags);
2960                                         nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_CLOSED;
2961                                         nesqp->last_aeq = NES_AEQE_AEID_RESET_SENT;
2962                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2963                                         nes_cm_disconn(nesqp);
2964                                 } else {
2965                                         nes_debug(NES_DBG_MOD_QP, "QP%u No fake disconnect, QP refcount=%d\n",
2966                                                         nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
2967                                 }
2968                         } else {
2969                                 spin_lock_irqsave(&nesqp->lock, qplockflags);
2970                                 if (nesqp->cm_id) {
2971                                         /* These two are for the timer thread */
2972                                         if (atomic_inc_return(&nesqp->close_timer_started) == 1) {
2973                                                 nesqp->cm_id->add_ref(nesqp->cm_id);
2974                                                 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
2975                                                                 " need ae to finish up, original_last_aeq = 0x%04X."
2976                                                                 " last_aeq = 0x%04X, scheduling timer.\n",
2977                                                                 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
2978                                                                 original_last_aeq, nesqp->last_aeq);
2979                                                 schedule_nes_timer(nesqp->cm_node, (struct sk_buff *) nesqp, NES_TIMER_TYPE_CLOSE, 1, 0);
2980                                         }
2981                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2982                                 } else {
2983                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2984                                         nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
2985                                                         " need ae to finish up, original_last_aeq = 0x%04X."
2986                                                         " last_aeq = 0x%04X.\n",
2987                                                         nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
2988                                                         original_last_aeq, nesqp->last_aeq);
2989                                 }
2990                         }
2991                 } else {
2992                         nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
2993                                         " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
2994                                         nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
2995                                         original_last_aeq, nesqp->last_aeq);
2996                 }
2997         } else {
2998                 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
2999                                 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3000                                 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3001                                 original_last_aeq, nesqp->last_aeq);
3002         }
3003
3004         err = 0;
3005
3006         nes_debug(NES_DBG_MOD_QP, "QP%u Leaving, refcount=%d\n",
3007                         nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3008
3009         return err;
3010 }
3011
3012
3013 /**
3014  * nes_muticast_attach
3015  */
3016 static int nes_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3017 {
3018         nes_debug(NES_DBG_INIT, "\n");
3019         return -ENOSYS;
3020 }
3021
3022
3023 /**
3024  * nes_multicast_detach
3025  */
3026 static int nes_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3027 {
3028         nes_debug(NES_DBG_INIT, "\n");
3029         return -ENOSYS;
3030 }
3031
3032
3033 /**
3034  * nes_process_mad
3035  */
3036 static int nes_process_mad(struct ib_device *ibdev, int mad_flags,
3037                 u8 port_num, const struct ib_wc *in_wc, const struct ib_grh *in_grh,
3038                 const struct ib_mad_hdr *in, size_t in_mad_size,
3039                 struct ib_mad_hdr *out, size_t *out_mad_size,
3040                 u16 *out_mad_pkey_index)
3041 {
3042         nes_debug(NES_DBG_INIT, "\n");
3043         return -ENOSYS;
3044 }
3045
3046 static inline void
3047 fill_wqe_sg_send(struct nes_hw_qp_wqe *wqe, struct ib_send_wr *ib_wr, u32 uselkey)
3048 {
3049         int sge_index;
3050         int total_payload_length = 0;
3051         for (sge_index = 0; sge_index < ib_wr->num_sge; sge_index++) {
3052                 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3053                         ib_wr->sg_list[sge_index].addr);
3054                 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_LENGTH0_IDX + (sge_index*4),
3055                         ib_wr->sg_list[sge_index].length);
3056                 if (uselkey)
3057                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4),
3058                                                 (ib_wr->sg_list[sge_index].lkey));
3059                 else
3060                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4), 0);
3061
3062                 total_payload_length += ib_wr->sg_list[sge_index].length;
3063         }
3064         nes_debug(NES_DBG_IW_TX, "UC UC UC, sending total_payload_length=%u \n",
3065                         total_payload_length);
3066         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3067                                 total_payload_length);
3068 }
3069
3070 /**
3071  * nes_post_send
3072  */
3073 static int nes_post_send(struct ib_qp *ibqp, struct ib_send_wr *ib_wr,
3074                 struct ib_send_wr **bad_wr)
3075 {
3076         u64 u64temp;
3077         unsigned long flags = 0;
3078         struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3079         struct nes_device *nesdev = nesvnic->nesdev;
3080         struct nes_qp *nesqp = to_nesqp(ibqp);
3081         struct nes_hw_qp_wqe *wqe;
3082         int err = 0;
3083         u32 qsize = nesqp->hwqp.sq_size;
3084         u32 head;
3085         u32 wqe_misc = 0;
3086         u32 wqe_count = 0;
3087         u32 counter;
3088
3089         if (nesqp->ibqp_state > IB_QPS_RTS) {
3090                 err = -EINVAL;
3091                 goto out;
3092         }
3093
3094         spin_lock_irqsave(&nesqp->lock, flags);
3095
3096         head = nesqp->hwqp.sq_head;
3097
3098         while (ib_wr) {
3099                 /* Check for QP error */
3100                 if (nesqp->term_flags) {
3101                         err = -EINVAL;
3102                         break;
3103                 }
3104
3105                 /* Check for SQ overflow */
3106                 if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
3107                         err = -ENOMEM;
3108                         break;
3109                 }
3110
3111                 wqe = &nesqp->hwqp.sq_vbase[head];
3112                 /* nes_debug(NES_DBG_IW_TX, "processing sq wqe for QP%u at %p, head = %u.\n",
3113                                 nesqp->hwqp.qp_id, wqe, head); */
3114                 nes_fill_init_qp_wqe(wqe, nesqp, head);
3115                 u64temp = (u64)(ib_wr->wr_id);
3116                 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3117                                         u64temp);
3118                 switch (ib_wr->opcode) {
3119                 case IB_WR_SEND:
3120                 case IB_WR_SEND_WITH_INV:
3121                         if (IB_WR_SEND == ib_wr->opcode) {
3122                                 if (ib_wr->send_flags & IB_SEND_SOLICITED)
3123                                         wqe_misc = NES_IWARP_SQ_OP_SENDSE;
3124                                 else
3125                                         wqe_misc = NES_IWARP_SQ_OP_SEND;
3126                         } else {
3127                                 if (ib_wr->send_flags & IB_SEND_SOLICITED)
3128                                         wqe_misc = NES_IWARP_SQ_OP_SENDSEINV;
3129                                 else
3130                                         wqe_misc = NES_IWARP_SQ_OP_SENDINV;
3131
3132                                 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_INV_STAG_LOW_IDX,
3133                                                     ib_wr->ex.invalidate_rkey);
3134                         }
3135
3136                         if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3137                                 err = -EINVAL;
3138                                 break;
3139                         }
3140
3141                         if (ib_wr->send_flags & IB_SEND_FENCE)
3142                                 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3143
3144                         if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3145                             ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3146                              (ib_wr->sg_list[0].length <= 64)) {
3147                                 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3148                                        (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3149                                 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3150                                                     ib_wr->sg_list[0].length);
3151                                 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3152                         } else {
3153                                 fill_wqe_sg_send(wqe, ib_wr, 1);
3154                         }
3155
3156                         break;
3157                 case IB_WR_RDMA_WRITE:
3158                         wqe_misc = NES_IWARP_SQ_OP_RDMAW;
3159                         if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3160                                 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=%u\n",
3161                                           ib_wr->num_sge, nesdev->nesadapter->max_sge);
3162                                 err = -EINVAL;
3163                                 break;
3164                         }
3165
3166                         if (ib_wr->send_flags & IB_SEND_FENCE)
3167                                 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3168
3169                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3170                                             rdma_wr(ib_wr)->rkey);
3171                         set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3172                                             rdma_wr(ib_wr)->remote_addr);
3173
3174                         if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3175                             ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3176                              (ib_wr->sg_list[0].length <= 64)) {
3177                                 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3178                                        (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3179                                 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3180                                                     ib_wr->sg_list[0].length);
3181                                 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3182                         } else {
3183                                 fill_wqe_sg_send(wqe, ib_wr, 1);
3184                         }
3185
3186                         wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX] =
3187                                 wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX];
3188                         break;
3189                 case IB_WR_RDMA_READ:
3190                 case IB_WR_RDMA_READ_WITH_INV:
3191                         /* iWARP only supports 1 sge for RDMA reads */
3192                         if (ib_wr->num_sge > 1) {
3193                                 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=1\n",
3194                                           ib_wr->num_sge);
3195                                 err = -EINVAL;
3196                                 break;
3197                         }
3198                         if (ib_wr->opcode == IB_WR_RDMA_READ) {
3199                                 wqe_misc = NES_IWARP_SQ_OP_RDMAR;
3200                         } else {
3201                                 wqe_misc = NES_IWARP_SQ_OP_RDMAR_LOCINV;
3202                                 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_INV_STAG_LOW_IDX,
3203                                                     ib_wr->ex.invalidate_rkey);
3204                         }
3205
3206                         set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3207                                             rdma_wr(ib_wr)->remote_addr);
3208                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3209                                             rdma_wr(ib_wr)->rkey);
3210                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX,
3211                                             ib_wr->sg_list->length);
3212                         set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX,
3213                                             ib_wr->sg_list->addr);
3214                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX,
3215                                             ib_wr->sg_list->lkey);
3216                         break;
3217                 case IB_WR_LOCAL_INV:
3218                         wqe_misc = NES_IWARP_SQ_OP_LOCINV;
3219                         set_wqe_32bit_value(wqe->wqe_words,
3220                                             NES_IWARP_SQ_LOCINV_WQE_INV_STAG_IDX,
3221                                             ib_wr->ex.invalidate_rkey);
3222                         break;
3223                 case IB_WR_REG_MR:
3224                 {
3225                         struct nes_mr *mr = to_nesmr(reg_wr(ib_wr)->mr);
3226                         int page_shift = ilog2(reg_wr(ib_wr)->mr->page_size);
3227                         int flags = reg_wr(ib_wr)->access;
3228
3229                         if (mr->npages > (NES_4K_PBL_CHUNK_SIZE / sizeof(u64))) {
3230                                 nes_debug(NES_DBG_IW_TX, "SQ_FMR: bad page_list_len\n");
3231                                 err = -EINVAL;
3232                                 break;
3233                         }
3234                         wqe_misc = NES_IWARP_SQ_OP_FAST_REG;
3235                         set_wqe_64bit_value(wqe->wqe_words,
3236                                             NES_IWARP_SQ_FMR_WQE_VA_FBO_LOW_IDX,
3237                                             mr->ibmr.iova);
3238                         set_wqe_32bit_value(wqe->wqe_words,
3239                                             NES_IWARP_SQ_FMR_WQE_LENGTH_LOW_IDX,
3240                                             mr->ibmr.length);
3241                         set_wqe_32bit_value(wqe->wqe_words,
3242                                             NES_IWARP_SQ_FMR_WQE_LENGTH_HIGH_IDX, 0);
3243                         set_wqe_32bit_value(wqe->wqe_words,
3244                                             NES_IWARP_SQ_FMR_WQE_MR_STAG_IDX,
3245                                             reg_wr(ib_wr)->key);
3246
3247                         if (page_shift == 12) {
3248                                 wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_4K;
3249                         } else if (page_shift == 21) {
3250                                 wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_2M;
3251                         } else {
3252                                 nes_debug(NES_DBG_IW_TX, "Invalid page shift,"
3253                                           " ib_wr=%u, max=1\n", ib_wr->num_sge);
3254                                 err = -EINVAL;
3255                                 break;
3256                         }
3257
3258                         /* Set access_flags */
3259                         wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_READ;
3260                         if (flags & IB_ACCESS_LOCAL_WRITE)
3261                                 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_WRITE;
3262
3263                         if (flags & IB_ACCESS_REMOTE_WRITE)
3264                                 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_WRITE;
3265
3266                         if (flags & IB_ACCESS_REMOTE_READ)
3267                                 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_READ;
3268
3269                         if (flags & IB_ACCESS_MW_BIND)
3270                                 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_WINDOW_BIND;
3271
3272                         /* Fill in PBL info: */
3273                         set_wqe_64bit_value(wqe->wqe_words,
3274                                             NES_IWARP_SQ_FMR_WQE_PBL_ADDR_LOW_IDX,
3275                                             mr->paddr);
3276
3277                         set_wqe_32bit_value(wqe->wqe_words,
3278                                             NES_IWARP_SQ_FMR_WQE_PBL_LENGTH_IDX,
3279                                             mr->npages * 8);
3280
3281                         nes_debug(NES_DBG_IW_TX, "SQ_REG_MR: iova_start: %llx, "
3282                                   "length: %d, rkey: %0x, pgl_paddr: %llx, "
3283                                   "page_list_len: %u, wqe_misc: %x\n",
3284                                   (unsigned long long) mr->ibmr.iova,
3285                                   mr->ibmr.length,
3286                                   reg_wr(ib_wr)->key,
3287                                   (unsigned long long) mr->paddr,
3288                                   mr->npages,
3289                                   wqe_misc);
3290                         break;
3291                 }
3292                 default:
3293                         /* error */
3294                         err = -EINVAL;
3295                         break;
3296                 }
3297
3298                 if (err)
3299                         break;
3300
3301                 if ((ib_wr->send_flags & IB_SEND_SIGNALED) || nesqp->sig_all)
3302                         wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
3303
3304                 wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = cpu_to_le32(wqe_misc);
3305
3306                 ib_wr = ib_wr->next;
3307                 head++;
3308                 wqe_count++;
3309                 if (head >= qsize)
3310                         head = 0;
3311
3312         }
3313
3314         nesqp->hwqp.sq_head = head;
3315         barrier();
3316         while (wqe_count) {
3317                 counter = min(wqe_count, ((u32)255));
3318                 wqe_count -= counter;
3319                 nes_write32(nesdev->regs + NES_WQE_ALLOC,
3320                                 (counter << 24) | 0x00800000 | nesqp->hwqp.qp_id);
3321         }
3322
3323         spin_unlock_irqrestore(&nesqp->lock, flags);
3324
3325 out:
3326         if (err)
3327                 *bad_wr = ib_wr;
3328         return err;
3329 }
3330
3331
3332 /**
3333  * nes_post_recv
3334  */
3335 static int nes_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *ib_wr,
3336                 struct ib_recv_wr **bad_wr)
3337 {
3338         u64 u64temp;
3339         unsigned long flags = 0;
3340         struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3341         struct nes_device *nesdev = nesvnic->nesdev;
3342         struct nes_qp *nesqp = to_nesqp(ibqp);
3343         struct nes_hw_qp_wqe *wqe;
3344         int err = 0;
3345         int sge_index;
3346         u32 qsize = nesqp->hwqp.rq_size;
3347         u32 head;
3348         u32 wqe_count = 0;
3349         u32 counter;
3350         u32 total_payload_length;
3351
3352         if (nesqp->ibqp_state > IB_QPS_RTS) {
3353                 err = -EINVAL;
3354                 goto out;
3355         }
3356
3357         spin_lock_irqsave(&nesqp->lock, flags);
3358
3359         head = nesqp->hwqp.rq_head;
3360
3361         while (ib_wr) {
3362                 /* Check for QP error */
3363                 if (nesqp->term_flags) {
3364                         err = -EINVAL;
3365                         break;
3366                 }
3367
3368                 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3369                         err = -EINVAL;
3370                         break;
3371                 }
3372                 /* Check for RQ overflow */
3373                 if (((head + (2 * qsize) - nesqp->hwqp.rq_tail) % qsize) == (qsize - 1)) {
3374                         err = -ENOMEM;
3375                         break;
3376                 }
3377
3378                 nes_debug(NES_DBG_IW_RX, "ibwr sge count = %u.\n", ib_wr->num_sge);
3379                 wqe = &nesqp->hwqp.rq_vbase[head];
3380
3381                 /* nes_debug(NES_DBG_IW_RX, "QP%u:processing rq wqe at %p, head = %u.\n",
3382                                 nesqp->hwqp.qp_id, wqe, head); */
3383                 nes_fill_init_qp_wqe(wqe, nesqp, head);
3384                 u64temp = (u64)(ib_wr->wr_id);
3385                 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3386                                         u64temp);
3387                 total_payload_length = 0;
3388                 for (sge_index=0; sge_index < ib_wr->num_sge; sge_index++) {
3389                         set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3390                                         ib_wr->sg_list[sge_index].addr);
3391                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_LENGTH0_IDX+(sge_index*4),
3392                                         ib_wr->sg_list[sge_index].length);
3393                         set_wqe_32bit_value(wqe->wqe_words,NES_IWARP_RQ_WQE_STAG0_IDX+(sge_index*4),
3394                                         ib_wr->sg_list[sge_index].lkey);
3395
3396                         total_payload_length += ib_wr->sg_list[sge_index].length;
3397                 }
3398                 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_TOTAL_PAYLOAD_IDX,
3399                                         total_payload_length);
3400
3401                 ib_wr = ib_wr->next;
3402                 head++;
3403                 wqe_count++;
3404                 if (head >= qsize)
3405                         head = 0;
3406         }
3407
3408         nesqp->hwqp.rq_head = head;
3409         barrier();
3410         while (wqe_count) {
3411                 counter = min(wqe_count, ((u32)255));
3412                 wqe_count -= counter;
3413                 nes_write32(nesdev->regs+NES_WQE_ALLOC, (counter<<24) | nesqp->hwqp.qp_id);
3414         }
3415
3416         spin_unlock_irqrestore(&nesqp->lock, flags);
3417
3418 out:
3419         if (err)
3420                 *bad_wr = ib_wr;
3421         return err;
3422 }
3423
3424 /**
3425  * nes_drain_sq - drain sq
3426  * @ibqp: pointer to ibqp
3427  */
3428 static void nes_drain_sq(struct ib_qp *ibqp)
3429 {
3430         struct nes_qp *nesqp = to_nesqp(ibqp);
3431
3432         if (nesqp->hwqp.sq_tail != nesqp->hwqp.sq_head)
3433                 wait_for_completion(&nesqp->sq_drained);
3434 }
3435
3436 /**
3437  * nes_drain_rq - drain rq
3438  * @ibqp: pointer to ibqp
3439  */
3440 static void nes_drain_rq(struct ib_qp *ibqp)
3441 {
3442         struct nes_qp *nesqp = to_nesqp(ibqp);
3443
3444         if (nesqp->hwqp.rq_tail != nesqp->hwqp.rq_head)
3445                 wait_for_completion(&nesqp->rq_drained);
3446 }
3447
3448 /**
3449  * nes_poll_cq
3450  */
3451 static int nes_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry)
3452 {
3453         u64 u64temp;
3454         u64 wrid;
3455         unsigned long flags = 0;
3456         struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3457         struct nes_device *nesdev = nesvnic->nesdev;
3458         struct nes_cq *nescq = to_nescq(ibcq);
3459         struct nes_qp *nesqp;
3460         struct nes_hw_cqe cqe;
3461         u32 head;
3462         u32 wq_tail = 0;
3463         u32 cq_size;
3464         u32 cqe_count = 0;
3465         u32 wqe_index;
3466         u32 u32temp;
3467         u32 move_cq_head = 1;
3468         u32 err_code;
3469
3470         nes_debug(NES_DBG_CQ, "\n");
3471
3472         spin_lock_irqsave(&nescq->lock, flags);
3473
3474         head = nescq->hw_cq.cq_head;
3475         cq_size = nescq->hw_cq.cq_size;
3476
3477         while (cqe_count < num_entries) {
3478                 if ((le32_to_cpu(nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX]) &
3479                                 NES_CQE_VALID) == 0)
3480                         break;
3481
3482                 /*
3483                  * Make sure we read CQ entry contents *after*
3484                  * we've checked the valid bit.
3485                  */
3486                 rmb();
3487
3488                 cqe = nescq->hw_cq.cq_vbase[head];
3489                 u32temp = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3490                 wqe_index = u32temp & (nesdev->nesadapter->max_qp_wr - 1);
3491                 u32temp &= ~(NES_SW_CONTEXT_ALIGN-1);
3492                 /* parse CQE, get completion context from WQE (either rq or sq) */
3493                 u64temp = (((u64)(le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX])))<<32) |
3494                                 ((u64)u32temp);
3495
3496                 if (u64temp) {
3497                         nesqp = (struct nes_qp *)(unsigned long)u64temp;
3498                         memset(entry, 0, sizeof *entry);
3499                         if (cqe.cqe_words[NES_CQE_ERROR_CODE_IDX] == 0) {
3500                                 entry->status = IB_WC_SUCCESS;
3501                         } else {
3502                                 err_code = le32_to_cpu(cqe.cqe_words[NES_CQE_ERROR_CODE_IDX]);
3503                                 if (NES_IWARP_CQE_MAJOR_DRV == (err_code >> 16)) {
3504                                         entry->status = err_code & 0x0000ffff;
3505
3506                                         /* The rest of the cqe's will be marked as flushed */
3507                                         nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_ERROR_CODE_IDX] =
3508                                                 cpu_to_le32((NES_IWARP_CQE_MAJOR_FLUSH << 16) |
3509                                                             NES_IWARP_CQE_MINOR_FLUSH);
3510                                 } else
3511                                         entry->status = IB_WC_WR_FLUSH_ERR;
3512                         }
3513
3514                         entry->qp = &nesqp->ibqp;
3515                         entry->src_qp = nesqp->hwqp.qp_id;
3516
3517                         if (le32_to_cpu(cqe.cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_SQ) {
3518                                 if (nesqp->skip_lsmm) {
3519                                         nesqp->skip_lsmm = 0;
3520                                         nesqp->hwqp.sq_tail++;
3521                                 }
3522
3523                                 /* Working on a SQ Completion*/
3524                                 wrid = (((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wqe_index].
3525                                                 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_HIGH_IDX]))) << 32) |
3526                                                 ((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wqe_index].
3527                                                 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX])));
3528                                 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3529                                                 wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX]);
3530
3531                                 switch (le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3532                                                 wqe_words[NES_IWARP_SQ_WQE_MISC_IDX]) & 0x3f) {
3533                                         case NES_IWARP_SQ_OP_RDMAW:
3534                                                 nes_debug(NES_DBG_CQ, "Operation = RDMA WRITE.\n");
3535                                                 entry->opcode = IB_WC_RDMA_WRITE;
3536                                                 break;
3537                                         case NES_IWARP_SQ_OP_RDMAR:
3538                                                 nes_debug(NES_DBG_CQ, "Operation = RDMA READ.\n");
3539                                                 entry->opcode = IB_WC_RDMA_READ;
3540                                                 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3541                                                                 wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX]);
3542                                                 break;
3543                                         case NES_IWARP_SQ_OP_SENDINV:
3544                                         case NES_IWARP_SQ_OP_SENDSEINV:
3545                                         case NES_IWARP_SQ_OP_SEND:
3546                                         case NES_IWARP_SQ_OP_SENDSE:
3547                                                 nes_debug(NES_DBG_CQ, "Operation = Send.\n");
3548                                                 entry->opcode = IB_WC_SEND;
3549                                                 break;
3550                                         case NES_IWARP_SQ_OP_LOCINV:
3551                                                 entry->opcode = IB_WC_LOCAL_INV;
3552                                                 break;
3553                                         case NES_IWARP_SQ_OP_FAST_REG:
3554                                                 entry->opcode = IB_WC_REG_MR;
3555                                                 break;
3556                                 }
3557
3558                                 nesqp->hwqp.sq_tail = (wqe_index+1)&(nesqp->hwqp.sq_size - 1);
3559                                 if ((entry->status != IB_WC_SUCCESS) && (nesqp->hwqp.sq_tail != nesqp->hwqp.sq_head)) {
3560                                         move_cq_head = 0;
3561                                         wq_tail = nesqp->hwqp.sq_tail;
3562                                 }
3563                         } else {
3564                                 /* Working on a RQ Completion*/
3565                                 entry->byte_len = le32_to_cpu(cqe.cqe_words[NES_CQE_PAYLOAD_LENGTH_IDX]);
3566                                 wrid = ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wqe_index].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_LOW_IDX]))) |
3567                                         ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wqe_index].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_HIGH_IDX]))<<32);
3568                                         entry->opcode = IB_WC_RECV;
3569
3570                                 nesqp->hwqp.rq_tail = (wqe_index+1)&(nesqp->hwqp.rq_size - 1);
3571                                 if ((entry->status != IB_WC_SUCCESS) && (nesqp->hwqp.rq_tail != nesqp->hwqp.rq_head)) {
3572                                         move_cq_head = 0;
3573                                         wq_tail = nesqp->hwqp.rq_tail;
3574                                 }
3575                         }
3576
3577                         if (nesqp->iwarp_state > NES_CQP_QP_IWARP_STATE_RTS) {
3578                                 if (nesqp->hwqp.sq_tail == nesqp->hwqp.sq_head)
3579                                         complete(&nesqp->sq_drained);
3580                                 if (nesqp->hwqp.rq_tail == nesqp->hwqp.rq_head)
3581                                         complete(&nesqp->rq_drained);
3582                         }
3583
3584                         entry->wr_id = wrid;
3585                         entry++;
3586                         cqe_count++;
3587                 }
3588
3589                 if (move_cq_head) {
3590                         nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX] = 0;
3591                         if (++head >= cq_size)
3592                                 head = 0;
3593                         nescq->polled_completions++;
3594
3595                         if ((nescq->polled_completions > (cq_size / 2)) ||
3596                                         (nescq->polled_completions == 255)) {
3597                                 nes_debug(NES_DBG_CQ, "CQ%u Issuing CQE Allocate since more than half of cqes"
3598                                         " are pending %u of %u.\n",
3599                                         nescq->hw_cq.cq_number, nescq->polled_completions, cq_size);
3600                                 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3601                                         nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3602                                 nescq->polled_completions = 0;
3603                         }
3604                 } else {
3605                         /* Update the wqe index and set status to flush */
3606                         wqe_index = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3607                         wqe_index = (wqe_index & (~(nesdev->nesadapter->max_qp_wr - 1))) | wq_tail;
3608                         nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX] =
3609                                 cpu_to_le32(wqe_index);
3610                         move_cq_head = 1; /* ready for next pass */
3611                 }
3612         }
3613
3614         if (nescq->polled_completions) {
3615                 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3616                                 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3617                 nescq->polled_completions = 0;
3618         }
3619
3620         nescq->hw_cq.cq_head = head;
3621         nes_debug(NES_DBG_CQ, "Reporting %u completions for CQ%u.\n",
3622                         cqe_count, nescq->hw_cq.cq_number);
3623
3624         spin_unlock_irqrestore(&nescq->lock, flags);
3625
3626         return cqe_count;
3627 }
3628
3629
3630 /**
3631  * nes_req_notify_cq
3632  */
3633 static int nes_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags notify_flags)
3634                 {
3635         struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3636         struct nes_device *nesdev = nesvnic->nesdev;
3637         struct nes_cq *nescq = to_nescq(ibcq);
3638         u32 cq_arm;
3639
3640         nes_debug(NES_DBG_CQ, "Requesting notification for CQ%u.\n",
3641                         nescq->hw_cq.cq_number);
3642
3643         cq_arm = nescq->hw_cq.cq_number;
3644         if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_NEXT_COMP)
3645                 cq_arm |= NES_CQE_ALLOC_NOTIFY_NEXT;
3646         else if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
3647                 cq_arm |= NES_CQE_ALLOC_NOTIFY_SE;
3648         else
3649                 return -EINVAL;
3650
3651         nes_write32(nesdev->regs+NES_CQE_ALLOC, cq_arm);
3652         nes_read32(nesdev->regs+NES_CQE_ALLOC);
3653
3654         return 0;
3655 }
3656
3657 static int nes_port_immutable(struct ib_device *ibdev, u8 port_num,
3658                               struct ib_port_immutable *immutable)
3659 {
3660         struct ib_port_attr attr;
3661         int err;
3662
3663         immutable->core_cap_flags = RDMA_CORE_PORT_IWARP;
3664
3665         err = nes_query_port(ibdev, port_num, &attr);
3666         if (err)
3667                 return err;
3668
3669         immutable->pkey_tbl_len = attr.pkey_tbl_len;
3670         immutable->gid_tbl_len = attr.gid_tbl_len;
3671
3672         return 0;
3673 }
3674
3675 static void get_dev_fw_str(struct ib_device *dev, char *str,
3676                            size_t str_len)
3677 {
3678         struct nes_ib_device *nesibdev =
3679                         container_of(dev, struct nes_ib_device, ibdev);
3680         struct nes_vnic *nesvnic = nesibdev->nesvnic;
3681
3682         nes_debug(NES_DBG_INIT, "\n");
3683         snprintf(str, str_len, "%u.%u",
3684                  (nesvnic->nesdev->nesadapter->firmware_version >> 16),
3685                  (nesvnic->nesdev->nesadapter->firmware_version & 0x000000ff));
3686 }
3687
3688 /**
3689  * nes_init_ofa_device
3690  */
3691 struct nes_ib_device *nes_init_ofa_device(struct net_device *netdev)
3692 {
3693         struct nes_ib_device *nesibdev;
3694         struct nes_vnic *nesvnic = netdev_priv(netdev);
3695         struct nes_device *nesdev = nesvnic->nesdev;
3696
3697         nesibdev = (struct nes_ib_device *)ib_alloc_device(sizeof(struct nes_ib_device));
3698         if (nesibdev == NULL) {
3699                 return NULL;
3700         }
3701         strlcpy(nesibdev->ibdev.name, "nes%d", IB_DEVICE_NAME_MAX);
3702         nesibdev->ibdev.owner = THIS_MODULE;
3703
3704         nesibdev->ibdev.node_type = RDMA_NODE_RNIC;
3705         memset(&nesibdev->ibdev.node_guid, 0, sizeof(nesibdev->ibdev.node_guid));
3706         memcpy(&nesibdev->ibdev.node_guid, netdev->dev_addr, 6);
3707
3708         nesibdev->ibdev.uverbs_cmd_mask =
3709                         (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
3710                         (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
3711                         (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
3712                         (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
3713                         (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
3714                         (1ull << IB_USER_VERBS_CMD_REG_MR) |
3715                         (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
3716                         (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
3717                         (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
3718                         (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
3719                         (1ull << IB_USER_VERBS_CMD_CREATE_AH) |
3720                         (1ull << IB_USER_VERBS_CMD_DESTROY_AH) |
3721                         (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
3722                         (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
3723                         (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
3724                         (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
3725                         (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
3726                         (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
3727                         (1ull << IB_USER_VERBS_CMD_BIND_MW) |
3728                         (1ull << IB_USER_VERBS_CMD_DEALLOC_MW) |
3729                         (1ull << IB_USER_VERBS_CMD_POST_RECV) |
3730                         (1ull << IB_USER_VERBS_CMD_POST_SEND);
3731
3732         nesibdev->ibdev.phys_port_cnt = 1;
3733         nesibdev->ibdev.num_comp_vectors = 1;
3734         nesibdev->ibdev.dma_device = &nesdev->pcidev->dev;
3735         nesibdev->ibdev.dev.parent = &nesdev->pcidev->dev;
3736         nesibdev->ibdev.query_device = nes_query_device;
3737         nesibdev->ibdev.query_port = nes_query_port;
3738         nesibdev->ibdev.query_pkey = nes_query_pkey;
3739         nesibdev->ibdev.query_gid = nes_query_gid;
3740         nesibdev->ibdev.alloc_ucontext = nes_alloc_ucontext;
3741         nesibdev->ibdev.dealloc_ucontext = nes_dealloc_ucontext;
3742         nesibdev->ibdev.mmap = nes_mmap;
3743         nesibdev->ibdev.alloc_pd = nes_alloc_pd;
3744         nesibdev->ibdev.dealloc_pd = nes_dealloc_pd;
3745         nesibdev->ibdev.create_ah = nes_create_ah;
3746         nesibdev->ibdev.destroy_ah = nes_destroy_ah;
3747         nesibdev->ibdev.create_qp = nes_create_qp;
3748         nesibdev->ibdev.modify_qp = nes_modify_qp;
3749         nesibdev->ibdev.query_qp = nes_query_qp;
3750         nesibdev->ibdev.destroy_qp = nes_destroy_qp;
3751         nesibdev->ibdev.create_cq = nes_create_cq;
3752         nesibdev->ibdev.destroy_cq = nes_destroy_cq;
3753         nesibdev->ibdev.poll_cq = nes_poll_cq;
3754         nesibdev->ibdev.get_dma_mr = nes_get_dma_mr;
3755         nesibdev->ibdev.reg_user_mr = nes_reg_user_mr;
3756         nesibdev->ibdev.dereg_mr = nes_dereg_mr;
3757         nesibdev->ibdev.alloc_mw = nes_alloc_mw;
3758         nesibdev->ibdev.dealloc_mw = nes_dealloc_mw;
3759
3760         nesibdev->ibdev.alloc_mr = nes_alloc_mr;
3761         nesibdev->ibdev.map_mr_sg = nes_map_mr_sg;
3762
3763         nesibdev->ibdev.attach_mcast = nes_multicast_attach;
3764         nesibdev->ibdev.detach_mcast = nes_multicast_detach;
3765         nesibdev->ibdev.process_mad = nes_process_mad;
3766
3767         nesibdev->ibdev.req_notify_cq = nes_req_notify_cq;
3768         nesibdev->ibdev.post_send = nes_post_send;
3769         nesibdev->ibdev.post_recv = nes_post_recv;
3770         nesibdev->ibdev.drain_sq = nes_drain_sq;
3771         nesibdev->ibdev.drain_rq = nes_drain_rq;
3772
3773         nesibdev->ibdev.iwcm = kzalloc(sizeof(*nesibdev->ibdev.iwcm), GFP_KERNEL);
3774         if (nesibdev->ibdev.iwcm == NULL) {
3775                 ib_dealloc_device(&nesibdev->ibdev);
3776                 return NULL;
3777         }
3778         nesibdev->ibdev.iwcm->add_ref = nes_add_ref;
3779         nesibdev->ibdev.iwcm->rem_ref = nes_rem_ref;
3780         nesibdev->ibdev.iwcm->get_qp = nes_get_qp;
3781         nesibdev->ibdev.iwcm->connect = nes_connect;
3782         nesibdev->ibdev.iwcm->accept = nes_accept;
3783         nesibdev->ibdev.iwcm->reject = nes_reject;
3784         nesibdev->ibdev.iwcm->create_listen = nes_create_listen;
3785         nesibdev->ibdev.iwcm->destroy_listen = nes_destroy_listen;
3786         nesibdev->ibdev.get_port_immutable   = nes_port_immutable;
3787         nesibdev->ibdev.get_dev_fw_str   = get_dev_fw_str;
3788         memcpy(nesibdev->ibdev.iwcm->ifname, netdev->name,
3789                sizeof(nesibdev->ibdev.iwcm->ifname));
3790
3791         return nesibdev;
3792 }
3793
3794
3795 /**
3796  * nes_handle_delayed_event
3797  */
3798 static void nes_handle_delayed_event(unsigned long data)
3799 {
3800         struct nes_vnic *nesvnic = (void *) data;
3801
3802         if (nesvnic->delayed_event != nesvnic->last_dispatched_event) {
3803                 struct ib_event event;
3804
3805                 event.device = &nesvnic->nesibdev->ibdev;
3806                 if (!event.device)
3807                         goto stop_timer;
3808                 event.event = nesvnic->delayed_event;
3809                 event.element.port_num = nesvnic->logical_port + 1;
3810                 ib_dispatch_event(&event);
3811         }
3812
3813 stop_timer:
3814         nesvnic->event_timer.function = NULL;
3815 }
3816
3817
3818 void  nes_port_ibevent(struct nes_vnic *nesvnic)
3819 {
3820         struct nes_ib_device *nesibdev = nesvnic->nesibdev;
3821         struct nes_device *nesdev = nesvnic->nesdev;
3822         struct ib_event event;
3823         event.device = &nesibdev->ibdev;
3824         event.element.port_num = nesvnic->logical_port + 1;
3825         event.event = nesdev->iw_status ? IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
3826
3827         if (!nesvnic->event_timer.function) {
3828                 ib_dispatch_event(&event);
3829                 nesvnic->last_dispatched_event = event.event;
3830                 nesvnic->event_timer.function = nes_handle_delayed_event;
3831                 nesvnic->event_timer.data = (unsigned long) nesvnic;
3832                 nesvnic->event_timer.expires = jiffies + NES_EVENT_DELAY;
3833                 add_timer(&nesvnic->event_timer);
3834         } else {
3835                 mod_timer(&nesvnic->event_timer, jiffies + NES_EVENT_DELAY);
3836         }
3837         nesvnic->delayed_event = event.event;
3838 }
3839
3840
3841 /**
3842  * nes_destroy_ofa_device
3843  */
3844 void nes_destroy_ofa_device(struct nes_ib_device *nesibdev)
3845 {
3846         if (nesibdev == NULL)
3847                 return;
3848
3849         nes_unregister_ofa_device(nesibdev);
3850
3851         kfree(nesibdev->ibdev.iwcm);
3852         ib_dealloc_device(&nesibdev->ibdev);
3853 }
3854
3855
3856 /**
3857  * nes_register_ofa_device
3858  */
3859 int nes_register_ofa_device(struct nes_ib_device *nesibdev)
3860 {
3861         struct nes_vnic *nesvnic = nesibdev->nesvnic;
3862         struct nes_device *nesdev = nesvnic->nesdev;
3863         struct nes_adapter *nesadapter = nesdev->nesadapter;
3864         int i, ret;
3865
3866         ret = ib_register_device(&nesvnic->nesibdev->ibdev, NULL);
3867         if (ret) {
3868                 return ret;
3869         }
3870
3871         /* Get the resources allocated to this device */
3872         nesibdev->max_cq = (nesadapter->max_cq-NES_FIRST_QPN) / nesadapter->port_count;
3873         nesibdev->max_mr = nesadapter->max_mr / nesadapter->port_count;
3874         nesibdev->max_qp = (nesadapter->max_qp-NES_FIRST_QPN) / nesadapter->port_count;
3875         nesibdev->max_pd = nesadapter->max_pd / nesadapter->port_count;
3876
3877         for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
3878                 ret = device_create_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
3879                 if (ret) {
3880                         while (i > 0) {
3881                                 i--;
3882                                 device_remove_file(&nesibdev->ibdev.dev,
3883                                                    nes_dev_attributes[i]);
3884                         }
3885                         ib_unregister_device(&nesibdev->ibdev);
3886                         return ret;
3887                 }
3888         }
3889
3890         nesvnic->of_device_registered = 1;
3891
3892         return 0;
3893 }
3894
3895
3896 /**
3897  * nes_unregister_ofa_device
3898  */
3899 static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev)
3900 {
3901         struct nes_vnic *nesvnic = nesibdev->nesvnic;
3902         int i;
3903
3904         for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
3905                 device_remove_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
3906         }
3907
3908         if (nesvnic->of_device_registered) {
3909                 ib_unregister_device(&nesibdev->ibdev);
3910         }
3911
3912         nesvnic->of_device_registered = 0;
3913 }