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,
 406                          struct scatterlist *sg,
 407                          int sg_nents)
 408 {
 409         struct nes_mr *nesmr = to_nesmr(ibmr);
 410
 411         nesmr->npages = 0;
 412
 413         return ib_sg_to_pages(ibmr, sg, sg_nents, nes_set_page);
 414 }
 415
 416 /**
 417  * nes_query_device
 418  */
 419 static int nes_query_device(struct ib_device *ibdev, struct ib_device_attr *props,
 420                             struct ib_udata *uhw)
 421 {
 422         struct nes_vnic *nesvnic = to_nesvnic(ibdev);
 423         struct nes_device *nesdev = nesvnic->nesdev;
 424         struct nes_ib_device *nesibdev = nesvnic->nesibdev;
 425
 426         if (uhw->inlen || uhw->outlen)
 427                 return -EINVAL;
 428
 429         memset(props, 0, sizeof(*props));
 430         memcpy(&props->sys_image_guid, nesvnic->netdev->dev_addr, 6);
 431
 432         props->fw_ver = nesdev->nesadapter->firmware_version;
 433         props->device_cap_flags = nesdev->nesadapter->device_cap_flags;
 434         props->vendor_id = nesdev->nesadapter->vendor_id;
 435         props->vendor_part_id = nesdev->nesadapter->vendor_part_id;
 436         props->hw_ver = nesdev->nesadapter->hw_rev;
 437         props->max_mr_size = 0x80000000;
 438         props->max_qp = nesibdev->max_qp;
 439         props->max_qp_wr = nesdev->nesadapter->max_qp_wr - 2;
 440         props->max_sge = nesdev->nesadapter->max_sge;
 441         props->max_cq = nesibdev->max_cq;
 442         props->max_cqe = nesdev->nesadapter->max_cqe;
 443         props->max_mr = nesibdev->max_mr;
 444         props->max_mw = nesibdev->max_mr;
 445         props->max_pd = nesibdev->max_pd;
 446         props->max_sge_rd = 1;
 447         switch (nesdev->nesadapter->max_irrq_wr) {
 448                 case 0:
 449                         props->max_qp_rd_atom = 2;
 450                         break;
 451                 case 1:
 452                         props->max_qp_rd_atom = 8;
 453                         break;
 454                 case 2:
 455                         props->max_qp_rd_atom = 32;
 456                         break;
 457                 case 3:
 458                         props->max_qp_rd_atom = 64;
 459                         break;
 460                 default:
 461                         props->max_qp_rd_atom = 0;
 462         }
 463         props->max_qp_init_rd_atom = props->max_qp_rd_atom;
 464         props->atomic_cap = IB_ATOMIC_NONE;
 465         props->max_map_per_fmr = 1;
 466
 467         return 0;
 468 }
 469
 470
 471 /**
 472  * nes_query_port
 473  */
 474 static int nes_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props)
 475 {
 476         struct nes_vnic *nesvnic = to_nesvnic(ibdev);
 477         struct net_device *netdev = nesvnic->netdev;
 478
 479         memset(props, 0, sizeof(*props));
 480
 481         props->max_mtu = IB_MTU_4096;
 482
 483         if (netdev->mtu  >= 4096)
 484                 props->active_mtu = IB_MTU_4096;
 485         else if (netdev->mtu  >= 2048)
 486                 props->active_mtu = IB_MTU_2048;
 487         else if (netdev->mtu  >= 1024)
 488                 props->active_mtu = IB_MTU_1024;
 489         else if (netdev->mtu  >= 512)
 490                 props->active_mtu = IB_MTU_512;
 491         else
 492                 props->active_mtu = IB_MTU_256;
 493
 494         props->lid = 1;
 495         props->lmc = 0;
 496         props->sm_lid = 0;
 497         props->sm_sl = 0;
 498         if (netif_queue_stopped(netdev))
 499                 props->state = IB_PORT_DOWN;
 500         else if (nesvnic->linkup)
 501                 props->state = IB_PORT_ACTIVE;
 502         else
 503                 props->state = IB_PORT_DOWN;
 504         props->phys_state = 0;
 505         props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP |
 506                         IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
 507         props->gid_tbl_len = 1;
 508         props->pkey_tbl_len = 1;
 509         props->qkey_viol_cntr = 0;
 510         props->active_width = IB_WIDTH_4X;
 511         props->active_speed = IB_SPEED_SDR;
 512         props->max_msg_sz = 0x80000000;
 513
 514         return 0;
 515 }
 516
 517 /**
 518  * nes_query_pkey
 519  */
 520 static int nes_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
 521 {
 522         *pkey = 0;
 523         return 0;
 524 }
 525
 526
 527 /**
 528  * nes_query_gid
 529  */
 530 static int nes_query_gid(struct ib_device *ibdev, u8 port,
 531                 int index, union ib_gid *gid)
 532 {
 533         struct nes_vnic *nesvnic = to_nesvnic(ibdev);
 534
 535         memset(&(gid->raw[0]), 0, sizeof(gid->raw));
 536         memcpy(&(gid->raw[0]), nesvnic->netdev->dev_addr, 6);
 537
 538         return 0;
 539 }
 540
 541
 542 /**
 543  * nes_alloc_ucontext - Allocate the user context data structure. This keeps track
 544  * of all objects associated with a particular user-mode client.
 545  */
 546 static struct ib_ucontext *nes_alloc_ucontext(struct ib_device *ibdev,
 547                 struct ib_udata *udata)
 548 {
 549         struct nes_vnic *nesvnic = to_nesvnic(ibdev);
 550         struct nes_device *nesdev = nesvnic->nesdev;
 551         struct nes_adapter *nesadapter = nesdev->nesadapter;
 552         struct nes_alloc_ucontext_req req;
 553         struct nes_alloc_ucontext_resp uresp;
 554         struct nes_ucontext *nes_ucontext;
 555         struct nes_ib_device *nesibdev = nesvnic->nesibdev;
 556
 557
 558         if (ib_copy_from_udata(&req, udata, sizeof(struct nes_alloc_ucontext_req))) {
 559                 printk(KERN_ERR PFX "Invalid structure size on allocate user context.\n");
 560                 return ERR_PTR(-EINVAL);
 561         }
 562
 563         if (req.userspace_ver != NES_ABI_USERSPACE_VER) {
 564                 printk(KERN_ERR PFX "Invalid userspace driver version detected. Detected version %d, should be %d\n",
 565                         req.userspace_ver, NES_ABI_USERSPACE_VER);
 566                 return ERR_PTR(-EINVAL);
 567         }
 568
 569
 570         memset(&uresp, 0, sizeof uresp);
 571
 572         uresp.max_qps = nesibdev->max_qp;
 573         uresp.max_pds = nesibdev->max_pd;
 574         uresp.wq_size = nesdev->nesadapter->max_qp_wr * 2;
 575         uresp.virtwq = nesadapter->virtwq;
 576         uresp.kernel_ver = NES_ABI_KERNEL_VER;
 577
 578         nes_ucontext = kzalloc(sizeof *nes_ucontext, GFP_KERNEL);
 579         if (!nes_ucontext)
 580                 return ERR_PTR(-ENOMEM);
 581
 582         nes_ucontext->nesdev = nesdev;
 583         nes_ucontext->mmap_wq_offset = uresp.max_pds;
 584         nes_ucontext->mmap_cq_offset = nes_ucontext->mmap_wq_offset +
 585                         ((sizeof(struct nes_hw_qp_wqe) * uresp.max_qps * 2) + PAGE_SIZE-1) /
 586                         PAGE_SIZE;
 587
 588
 589         if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
 590                 kfree(nes_ucontext);
 591                 return ERR_PTR(-EFAULT);
 592         }
 593
 594         INIT_LIST_HEAD(&nes_ucontext->cq_reg_mem_list);
 595         INIT_LIST_HEAD(&nes_ucontext->qp_reg_mem_list);
 596         atomic_set(&nes_ucontext->usecnt, 1);
 597         return &nes_ucontext->ibucontext;
 598 }
 599
 600
 601 /**
 602  * nes_dealloc_ucontext
 603  */
 604 static int nes_dealloc_ucontext(struct ib_ucontext *context)
 605 {
 606         /* struct nes_vnic *nesvnic = to_nesvnic(context->device); */
 607         /* struct nes_device *nesdev = nesvnic->nesdev; */
 608         struct nes_ucontext *nes_ucontext = to_nesucontext(context);
 609
 610         if (!atomic_dec_and_test(&nes_ucontext->usecnt))
 611           return 0;
 612         kfree(nes_ucontext);
 613         return 0;
 614 }
 615
 616
 617 /**
 618  * nes_mmap
 619  */
 620 static int nes_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
 621 {
 622         unsigned long index;
 623         struct nes_vnic *nesvnic = to_nesvnic(context->device);
 624         struct nes_device *nesdev = nesvnic->nesdev;
 625         /* struct nes_adapter *nesadapter = nesdev->nesadapter; */
 626         struct nes_ucontext *nes_ucontext;
 627         struct nes_qp *nesqp;
 628
 629         nes_ucontext = to_nesucontext(context);
 630
 631
 632         if (vma->vm_pgoff >= nes_ucontext->mmap_wq_offset) {
 633                 index = (vma->vm_pgoff - nes_ucontext->mmap_wq_offset) * PAGE_SIZE;
 634                 index /= ((sizeof(struct nes_hw_qp_wqe) * nesdev->nesadapter->max_qp_wr * 2) +
 635                                 PAGE_SIZE-1) & (~(PAGE_SIZE-1));
 636                 if (!test_bit(index, nes_ucontext->allocated_wqs)) {
 637                         nes_debug(NES_DBG_MMAP, "wq %lu not allocated\n", index);
 638                         return -EFAULT;
 639                 }
 640                 nesqp = nes_ucontext->mmap_nesqp[index];
 641                 if (nesqp == NULL) {
 642                         nes_debug(NES_DBG_MMAP, "wq %lu has a NULL QP base.\n", index);
 643                         return -EFAULT;
 644                 }
 645                 if (remap_pfn_range(vma, vma->vm_start,
 646                                 virt_to_phys(nesqp->hwqp.sq_vbase) >> PAGE_SHIFT,
 647                                 vma->vm_end - vma->vm_start,
 648                                 vma->vm_page_prot)) {
 649                         nes_debug(NES_DBG_MMAP, "remap_pfn_range failed.\n");
 650                         return -EAGAIN;
 651                 }
 652                 vma->vm_private_data = nesqp;
 653                 return 0;
 654         } else {
 655                 index = vma->vm_pgoff;
 656                 if (!test_bit(index, nes_ucontext->allocated_doorbells))
 657                         return -EFAULT;
 658
 659                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 660                 if (io_remap_pfn_range(vma, vma->vm_start,
 661                                 (nesdev->doorbell_start +
 662                                 ((nes_ucontext->mmap_db_index[index] - nesdev->base_doorbell_index) * 4096))
 663                                 >> PAGE_SHIFT, PAGE_SIZE, vma->vm_page_prot))
 664                         return -EAGAIN;
 665                 vma->vm_private_data = nes_ucontext;
 666                 return 0;
 667         }
 668
 669         return -ENOSYS;
 670 }
 671
 672
 673 /**
 674  * nes_alloc_pd
 675  */
 676 static struct ib_pd *nes_alloc_pd(struct ib_device *ibdev,
 677                 struct ib_ucontext *context, struct ib_udata *udata)
 678 {
 679         struct nes_pd *nespd;
 680         struct nes_vnic *nesvnic = to_nesvnic(ibdev);
 681         struct nes_device *nesdev = nesvnic->nesdev;
 682         struct nes_adapter *nesadapter = nesdev->nesadapter;
 683         struct nes_ucontext *nesucontext;
 684         struct nes_alloc_pd_resp uresp;
 685         u32 pd_num = 0;
 686         int err;
 687
 688         nes_debug(NES_DBG_PD, "nesvnic=%p, netdev=%p %s, ibdev=%p, context=%p, netdev refcnt=%u\n",
 689                         nesvnic, nesdev->netdev[0], nesdev->netdev[0]->name, ibdev, context,
 690                         netdev_refcnt_read(nesvnic->netdev));
 691
 692         err = nes_alloc_resource(nesadapter, nesadapter->allocated_pds,
 693                         nesadapter->max_pd, &pd_num, &nesadapter->next_pd, NES_RESOURCE_PD);
 694         if (err) {
 695                 return ERR_PTR(err);
 696         }
 697
 698         nespd = kzalloc(sizeof (struct nes_pd), GFP_KERNEL);
 699         if (!nespd) {
 700                 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
 701                 return ERR_PTR(-ENOMEM);
 702         }
 703
 704         nes_debug(NES_DBG_PD, "Allocating PD (%p) for ib device %s\n",
 705                         nespd, nesvnic->nesibdev->ibdev.name);
 706
 707         nespd->pd_id = (pd_num << (PAGE_SHIFT-12)) + nesadapter->base_pd;
 708
 709         if (context) {
 710                 nesucontext = to_nesucontext(context);
 711                 nespd->mmap_db_index = find_next_zero_bit(nesucontext->allocated_doorbells,
 712                                 NES_MAX_USER_DB_REGIONS, nesucontext->first_free_db);
 713                 nes_debug(NES_DBG_PD, "find_first_zero_biton doorbells returned %u, mapping pd_id %u.\n",
 714                                 nespd->mmap_db_index, nespd->pd_id);
 715                 if (nespd->mmap_db_index >= NES_MAX_USER_DB_REGIONS) {
 716                         nes_debug(NES_DBG_PD, "mmap_db_index > MAX\n");
 717                         nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
 718                         kfree(nespd);
 719                         return ERR_PTR(-ENOMEM);
 720                 }
 721
 722                 uresp.pd_id = nespd->pd_id;
 723                 uresp.mmap_db_index = nespd->mmap_db_index;
 724                 if (ib_copy_to_udata(udata, &uresp, sizeof (struct nes_alloc_pd_resp))) {
 725                         nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
 726                         kfree(nespd);
 727                         return ERR_PTR(-EFAULT);
 728                 }
 729
 730                 set_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
 731                 nesucontext->mmap_db_index[nespd->mmap_db_index] = nespd->pd_id;
 732                 nesucontext->first_free_db = nespd->mmap_db_index + 1;
 733         }
 734
 735         nes_debug(NES_DBG_PD, "PD%u structure located @%p.\n", nespd->pd_id, nespd);
 736         return &nespd->ibpd;
 737 }
 738
 739
 740 /**
 741  * nes_dealloc_pd
 742  */
 743 static int nes_dealloc_pd(struct ib_pd *ibpd)
 744 {
 745         struct nes_ucontext *nesucontext;
 746         struct nes_pd *nespd = to_nespd(ibpd);
 747         struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
 748         struct nes_device *nesdev = nesvnic->nesdev;
 749         struct nes_adapter *nesadapter = nesdev->nesadapter;
 750
 751         if ((ibpd->uobject) && (ibpd->uobject->context)) {
 752                 nesucontext = to_nesucontext(ibpd->uobject->context);
 753                 nes_debug(NES_DBG_PD, "Clearing bit %u from allocated doorbells\n",
 754                                 nespd->mmap_db_index);
 755                 clear_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
 756                 nesucontext->mmap_db_index[nespd->mmap_db_index] = 0;
 757                 if (nesucontext->first_free_db > nespd->mmap_db_index) {
 758                         nesucontext->first_free_db = nespd->mmap_db_index;
 759                 }
 760         }
 761
 762         nes_debug(NES_DBG_PD, "Deallocating PD%u structure located @%p.\n",
 763                         nespd->pd_id, nespd);
 764         nes_free_resource(nesadapter, nesadapter->allocated_pds,
 765                         (nespd->pd_id-nesadapter->base_pd)>>(PAGE_SHIFT-12));
 766         kfree(nespd);
 767
 768         return 0;
 769 }
 770
 771
 772 /**
 773  * nes_create_ah
 774  */
 775 static struct ib_ah *nes_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
 776 {
 777         return ERR_PTR(-ENOSYS);
 778 }
 779
 780
 781 /**
 782  * nes_destroy_ah
 783  */
 784 static int nes_destroy_ah(struct ib_ah *ah)
 785 {
 786         return -ENOSYS;
 787 }
 788
 789
 790 /**
 791  * nes_get_encoded_size
 792  */
 793 static inline u8 nes_get_encoded_size(int *size)
 794 {
 795         u8 encoded_size = 0;
 796         if (*size <= 32) {
 797                 *size = 32;
 798                 encoded_size = 1;
 799         } else if (*size <= 128) {
 800                 *size = 128;
 801                 encoded_size = 2;
 802         } else if (*size <= 512) {
 803                 *size = 512;
 804                 encoded_size = 3;
 805         }
 806         return (encoded_size);
 807 }
 808
 809
 810
 811 /**
 812  * nes_setup_virt_qp
 813  */
 814 static int nes_setup_virt_qp(struct nes_qp *nesqp, struct nes_pbl *nespbl,
 815                 struct nes_vnic *nesvnic, int sq_size, int rq_size)
 816 {
 817         unsigned long flags;
 818         void *mem;
 819         __le64 *pbl = NULL;
 820         __le64 *tpbl;
 821         __le64 *pblbuffer;
 822         struct nes_device *nesdev = nesvnic->nesdev;
 823         struct nes_adapter *nesadapter = nesdev->nesadapter;
 824         u32 pbl_entries;
 825         u8 rq_pbl_entries;
 826         u8 sq_pbl_entries;
 827
 828         pbl_entries = nespbl->pbl_size >> 3;
 829         nes_debug(NES_DBG_QP, "Userspace PBL, pbl_size=%u, pbl_entries = %d pbl_vbase=%p, pbl_pbase=%lx\n",
 830                         nespbl->pbl_size, pbl_entries,
 831                         (void *)nespbl->pbl_vbase,
 832                         (unsigned long) nespbl->pbl_pbase);
 833         pbl = (__le64 *) nespbl->pbl_vbase; /* points to first pbl entry */
 834         /* now lets set the sq_vbase as well as rq_vbase addrs we will assign */
 835         /* the first pbl to be fro the rq_vbase... */
 836         rq_pbl_entries = (rq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
 837         sq_pbl_entries = (sq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
 838         nesqp->hwqp.sq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
 839         if (!nespbl->page) {
 840                 nes_debug(NES_DBG_QP, "QP nespbl->page is NULL \n");
 841                 kfree(nespbl);
 842                 return -ENOMEM;
 843         }
 844
 845         nesqp->hwqp.sq_vbase = kmap(nespbl->page);
 846         nesqp->page = nespbl->page;
 847         if (!nesqp->hwqp.sq_vbase) {
 848                 nes_debug(NES_DBG_QP, "QP sq_vbase kmap failed\n");
 849                 kfree(nespbl);
 850                 return -ENOMEM;
 851         }
 852
 853         /* Now to get to sq.. we need to calculate how many */
 854         /* PBL entries were used by the rq.. */
 855         pbl += sq_pbl_entries;
 856         nesqp->hwqp.rq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
 857         /* nesqp->hwqp.rq_vbase = bus_to_virt(*pbl); */
 858         /*nesqp->hwqp.rq_vbase = phys_to_virt(*pbl); */
 859
 860         nes_debug(NES_DBG_QP, "QP sq_vbase= %p sq_pbase=%lx rq_vbase=%p rq_pbase=%lx\n",
 861                   nesqp->hwqp.sq_vbase, (unsigned long) nesqp->hwqp.sq_pbase,
 862                   nesqp->hwqp.rq_vbase, (unsigned long) nesqp->hwqp.rq_pbase);
 863         spin_lock_irqsave(&nesadapter->pbl_lock, flags);
 864         if (!nesadapter->free_256pbl) {
 865                 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
 866                                 nespbl->pbl_pbase);
 867                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
 868                 kunmap(nesqp->page);
 869                 kfree(nespbl);
 870                 return -ENOMEM;
 871         }
 872         nesadapter->free_256pbl--;
 873         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
 874
 875         nesqp->pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 256, &nesqp->pbl_pbase);
 876         pblbuffer = nesqp->pbl_vbase;
 877         if (!nesqp->pbl_vbase) {
 878                 /* memory allocated during nes_reg_user_mr() */
 879                 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
 880                                     nespbl->pbl_pbase);
 881                 kfree(nespbl);
 882                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
 883                 nesadapter->free_256pbl++;
 884                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
 885                 kunmap(nesqp->page);
 886                 return -ENOMEM;
 887         }
 888         memset(nesqp->pbl_vbase, 0, 256);
 889         /* fill in the page address in the pbl buffer.. */
 890         tpbl = pblbuffer + 16;
 891         pbl = (__le64 *)nespbl->pbl_vbase;
 892         while (sq_pbl_entries--)
 893                 *tpbl++ = *pbl++;
 894         tpbl = pblbuffer;
 895         while (rq_pbl_entries--)
 896                 *tpbl++ = *pbl++;
 897
 898         /* done with memory allocated during nes_reg_user_mr() */
 899         pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
 900                             nespbl->pbl_pbase);
 901         kfree(nespbl);
 902
 903         nesqp->qp_mem_size =
 904                         max((u32)sizeof(struct nes_qp_context), ((u32)256)) + 256;     /* this is Q2 */
 905         /* Round up to a multiple of a page */
 906         nesqp->qp_mem_size += PAGE_SIZE - 1;
 907         nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
 908
 909         mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
 910                         &nesqp->hwqp.q2_pbase);
 911
 912         if (!mem) {
 913                 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase);
 914                 nesqp->pbl_vbase = NULL;
 915                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
 916                 nesadapter->free_256pbl++;
 917                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
 918                 kunmap(nesqp->page);
 919                 return -ENOMEM;
 920         }
 921         nesqp->sq_kmapped = 1;
 922         nesqp->hwqp.q2_vbase = mem;
 923         mem += 256;
 924         memset(nesqp->hwqp.q2_vbase, 0, 256);
 925         nesqp->nesqp_context = mem;
 926         memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
 927         nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
 928
 929         return 0;
 930 }
 931
 932
 933 /**
 934  * nes_setup_mmap_qp
 935  */
 936 static int nes_setup_mmap_qp(struct nes_qp *nesqp, struct nes_vnic *nesvnic,
 937                 int sq_size, int rq_size)
 938 {
 939         void *mem;
 940         struct nes_device *nesdev = nesvnic->nesdev;
 941
 942         nesqp->qp_mem_size = (sizeof(struct nes_hw_qp_wqe) * sq_size) +
 943                         (sizeof(struct nes_hw_qp_wqe) * rq_size) +
 944                         max((u32)sizeof(struct nes_qp_context), ((u32)256)) +
 945                         256; /* this is Q2 */
 946         /* Round up to a multiple of a page */
 947         nesqp->qp_mem_size += PAGE_SIZE - 1;
 948         nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
 949
 950         mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
 951                         &nesqp->hwqp.sq_pbase);
 952         if (!mem)
 953                 return -ENOMEM;
 954         nes_debug(NES_DBG_QP, "PCI consistent memory for "
 955                         "host descriptor rings located @ %p (pa = 0x%08lX.) size = %u.\n",
 956                         mem, (unsigned long)nesqp->hwqp.sq_pbase, nesqp->qp_mem_size);
 957
 958         memset(mem, 0, nesqp->qp_mem_size);
 959
 960         nesqp->hwqp.sq_vbase = mem;
 961         mem += sizeof(struct nes_hw_qp_wqe) * sq_size;
 962
 963         nesqp->hwqp.rq_vbase = mem;
 964         nesqp->hwqp.rq_pbase = nesqp->hwqp.sq_pbase +
 965                         sizeof(struct nes_hw_qp_wqe) * sq_size;
 966         mem += sizeof(struct nes_hw_qp_wqe) * rq_size;
 967
 968         nesqp->hwqp.q2_vbase = mem;
 969         nesqp->hwqp.q2_pbase = nesqp->hwqp.rq_pbase +
 970                         sizeof(struct nes_hw_qp_wqe) * rq_size;
 971         mem += 256;
 972         memset(nesqp->hwqp.q2_vbase, 0, 256);
 973
 974         nesqp->nesqp_context = mem;
 975         nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
 976         memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
 977         return 0;
 978 }
 979
 980
 981 /**
 982  * nes_free_qp_mem() is to free up the qp's pci_alloc_consistent() memory.
 983  */
 984 static inline void nes_free_qp_mem(struct nes_device *nesdev,
 985                 struct nes_qp *nesqp, int virt_wqs)
 986 {
 987         unsigned long flags;
 988         struct nes_adapter *nesadapter = nesdev->nesadapter;
 989         if (!virt_wqs) {
 990                 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
 991                                 nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase);
 992         }else {
 993                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
 994                 nesadapter->free_256pbl++;
 995                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
 996                 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size, nesqp->hwqp.q2_vbase, nesqp->hwqp.q2_pbase);
 997                 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase );
 998                 nesqp->pbl_vbase = NULL;
 999                 if (nesqp->sq_kmapped) {
1000                         nesqp->sq_kmapped = 0;
1001                         kunmap(nesqp->page);
1002                 }
1003         }
1004 }
1005
1006
1007 /**
1008  * nes_create_qp
1009  */
1010 static struct ib_qp *nes_create_qp(struct ib_pd *ibpd,
1011                 struct ib_qp_init_attr *init_attr, struct ib_udata *udata)
1012 {
1013         u64 u64temp= 0;
1014         u64 u64nesqp = 0;
1015         struct nes_pd *nespd = to_nespd(ibpd);
1016         struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
1017         struct nes_device *nesdev = nesvnic->nesdev;
1018         struct nes_adapter *nesadapter = nesdev->nesadapter;
1019         struct nes_qp *nesqp;
1020         struct nes_cq *nescq;
1021         struct nes_ucontext *nes_ucontext;
1022         struct nes_hw_cqp_wqe *cqp_wqe;
1023         struct nes_cqp_request *cqp_request;
1024         struct nes_create_qp_req req;
1025         struct nes_create_qp_resp uresp;
1026         struct nes_pbl  *nespbl = NULL;
1027         u32 qp_num = 0;
1028         u32 opcode = 0;
1029         /* u32 counter = 0; */
1030         void *mem;
1031         unsigned long flags;
1032         int ret;
1033         int err;
1034         int virt_wqs = 0;
1035         int sq_size;
1036         int rq_size;
1037         u8 sq_encoded_size;
1038         u8 rq_encoded_size;
1039         /* int counter; */
1040
1041         if (init_attr->create_flags)
1042                 return ERR_PTR(-EINVAL);
1043
1044         atomic_inc(&qps_created);
1045         switch (init_attr->qp_type) {
1046                 case IB_QPT_RC:
1047                         if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) {
1048                                 init_attr->cap.max_inline_data = 0;
1049                         } else {
1050                                 init_attr->cap.max_inline_data = 64;
1051                         }
1052                         sq_size = init_attr->cap.max_send_wr;
1053                         rq_size = init_attr->cap.max_recv_wr;
1054
1055                         /* check if the encoded sizes are OK or not... */
1056                         sq_encoded_size = nes_get_encoded_size(&sq_size);
1057                         rq_encoded_size = nes_get_encoded_size(&rq_size);
1058
1059                         if ((!sq_encoded_size) || (!rq_encoded_size)) {
1060                                 nes_debug(NES_DBG_QP, "ERROR bad rq (%u) or sq (%u) size\n",
1061                                                 rq_size, sq_size);
1062                                 return ERR_PTR(-EINVAL);
1063                         }
1064
1065                         init_attr->cap.max_send_wr = sq_size -2;
1066                         init_attr->cap.max_recv_wr = rq_size -1;
1067                         nes_debug(NES_DBG_QP, "RQ size=%u, SQ Size=%u\n", rq_size, sq_size);
1068
1069                         ret = nes_alloc_resource(nesadapter, nesadapter->allocated_qps,
1070                                         nesadapter->max_qp, &qp_num, &nesadapter->next_qp, NES_RESOURCE_QP);
1071                         if (ret) {
1072                                 return ERR_PTR(ret);
1073                         }
1074
1075                         /* Need 512 (actually now 1024) byte alignment on this structure */
1076                         mem = kzalloc(sizeof(*nesqp)+NES_SW_CONTEXT_ALIGN-1, GFP_KERNEL);
1077                         if (!mem) {
1078                                 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1079                                 nes_debug(NES_DBG_QP, "Unable to allocate QP\n");
1080                                 return ERR_PTR(-ENOMEM);
1081                         }
1082                         u64nesqp = (unsigned long)mem;
1083                         u64nesqp += ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1084                         u64temp = ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1085                         u64nesqp &= ~u64temp;
1086                         nesqp = (struct nes_qp *)(unsigned long)u64nesqp;
1087                         /* nes_debug(NES_DBG_QP, "nesqp=%p, allocated buffer=%p.  Rounded to closest %u\n",
1088                                         nesqp, mem, NES_SW_CONTEXT_ALIGN); */
1089                         nesqp->allocated_buffer = mem;
1090
1091                         if (udata) {
1092                                 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_create_qp_req))) {
1093                                         nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1094                                         kfree(nesqp->allocated_buffer);
1095                                         nes_debug(NES_DBG_QP, "ib_copy_from_udata() Failed \n");
1096                                         return ERR_PTR(-EFAULT);
1097                                 }
1098                                 if (req.user_wqe_buffers) {
1099                                         virt_wqs = 1;
1100                                 }
1101                                 if (req.user_qp_buffer)
1102                                         nesqp->nesuqp_addr = req.user_qp_buffer;
1103                                 if ((ibpd->uobject) && (ibpd->uobject->context)) {
1104                                         nesqp->user_mode = 1;
1105                                         nes_ucontext = to_nesucontext(ibpd->uobject->context);
1106                                         if (virt_wqs) {
1107                                                 err = 1;
1108                                                 list_for_each_entry(nespbl, &nes_ucontext->qp_reg_mem_list, list) {
1109                                                         if (nespbl->user_base == (unsigned long )req.user_wqe_buffers) {
1110                                                                 list_del(&nespbl->list);
1111                                                                 err = 0;
1112                                                                 nes_debug(NES_DBG_QP, "Found PBL for virtual QP. nespbl=%p. user_base=0x%lx\n",
1113                                                                           nespbl, nespbl->user_base);
1114                                                                 break;
1115                                                         }
1116                                                 }
1117                                                 if (err) {
1118                                                         nes_debug(NES_DBG_QP, "Didn't Find PBL for virtual QP. address = %llx.\n",
1119                                                                   (long long unsigned int)req.user_wqe_buffers);
1120                                                         nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1121                                                         kfree(nesqp->allocated_buffer);
1122                                                         return ERR_PTR(-EFAULT);
1123                                                 }
1124                                         }
1125
1126                                         nes_ucontext = to_nesucontext(ibpd->uobject->context);
1127                                         nesqp->mmap_sq_db_index =
1128                                                 find_next_zero_bit(nes_ucontext->allocated_wqs,
1129                                                                    NES_MAX_USER_WQ_REGIONS, nes_ucontext->first_free_wq);
1130                                         /* nes_debug(NES_DBG_QP, "find_first_zero_biton wqs returned %u\n",
1131                                                         nespd->mmap_db_index); */
1132                                         if (nesqp->mmap_sq_db_index >= NES_MAX_USER_WQ_REGIONS) {
1133                                                 nes_debug(NES_DBG_QP,
1134                                                           "db index > max user regions, failing create QP\n");
1135                                                 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1136                                                 if (virt_wqs) {
1137                                                         pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1138                                                                             nespbl->pbl_pbase);
1139                                                         kfree(nespbl);
1140                                                 }
1141                                                 kfree(nesqp->allocated_buffer);
1142                                                 return ERR_PTR(-ENOMEM);
1143                                         }
1144                                         set_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1145                                         nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = nesqp;
1146                                         nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index + 1;
1147                                 } else {
1148                                         nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1149                                         kfree(nesqp->allocated_buffer);
1150                                         return ERR_PTR(-EFAULT);
1151                                 }
1152                         }
1153                         err = (!virt_wqs) ? nes_setup_mmap_qp(nesqp, nesvnic, sq_size, rq_size) :
1154                                         nes_setup_virt_qp(nesqp, nespbl, nesvnic, sq_size, rq_size);
1155                         if (err) {
1156                                 nes_debug(NES_DBG_QP,
1157                                           "error geting qp mem code = %d\n", err);
1158                                 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1159                                 kfree(nesqp->allocated_buffer);
1160                                 return ERR_PTR(-ENOMEM);
1161                         }
1162
1163                         nesqp->hwqp.sq_size = sq_size;
1164                         nesqp->hwqp.sq_encoded_size = sq_encoded_size;
1165                         nesqp->hwqp.sq_head = 1;
1166                         nesqp->hwqp.rq_size = rq_size;
1167                         nesqp->hwqp.rq_encoded_size = rq_encoded_size;
1168                         /* nes_debug(NES_DBG_QP, "nesqp->nesqp_context_pbase = %p\n",
1169                                         (void *)nesqp->nesqp_context_pbase);
1170                         */
1171                         nesqp->hwqp.qp_id = qp_num;
1172                         nesqp->ibqp.qp_num = nesqp->hwqp.qp_id;
1173                         nesqp->nespd = nespd;
1174
1175                         nescq = to_nescq(init_attr->send_cq);
1176                         nesqp->nesscq = nescq;
1177                         nescq = to_nescq(init_attr->recv_cq);
1178                         nesqp->nesrcq = nescq;
1179
1180                         nesqp->nesqp_context->misc |= cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) <<
1181                                         NES_QPCONTEXT_MISC_PCI_FCN_SHIFT);
1182                         nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.rq_encoded_size <<
1183                                         NES_QPCONTEXT_MISC_RQ_SIZE_SHIFT);
1184                         nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.sq_encoded_size <<
1185                                         NES_QPCONTEXT_MISC_SQ_SIZE_SHIFT);
1186                         if (!udata) {
1187                                 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_PRIV_EN);
1188                                 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_FAST_REGISTER_EN);
1189                         }
1190                         nesqp->nesqp_context->cqs = cpu_to_le32(nesqp->nesscq->hw_cq.cq_number +
1191                                         ((u32)nesqp->nesrcq->hw_cq.cq_number << 16));
1192                         u64temp = (u64)nesqp->hwqp.sq_pbase;
1193                         nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1194                         nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1195
1196
1197                         if (!virt_wqs) {
1198                                 u64temp = (u64)nesqp->hwqp.sq_pbase;
1199                                 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1200                                 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1201                                 u64temp = (u64)nesqp->hwqp.rq_pbase;
1202                                 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1203                                 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1204                         } else {
1205                                 u64temp = (u64)nesqp->pbl_pbase;
1206                                 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1207                                 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1208                         }
1209
1210                         /* nes_debug(NES_DBG_QP, "next_qp_nic_index=%u, using nic_index=%d\n",
1211                                         nesvnic->next_qp_nic_index,
1212                                         nesvnic->qp_nic_index[nesvnic->next_qp_nic_index]); */
1213                         spin_lock_irqsave(&nesdev->cqp.lock, flags);
1214                         nesqp->nesqp_context->misc2 |= cpu_to_le32(
1215                                         (u32)nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] <<
1216                                         NES_QPCONTEXT_MISC2_NIC_INDEX_SHIFT);
1217                         nesvnic->next_qp_nic_index++;
1218                         if ((nesvnic->next_qp_nic_index > 3) ||
1219                                         (nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] == 0xf)) {
1220                                 nesvnic->next_qp_nic_index = 0;
1221                         }
1222                         spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
1223
1224                         nesqp->nesqp_context->pd_index_wscale |= cpu_to_le32((u32)nesqp->nespd->pd_id << 16);
1225                         u64temp = (u64)nesqp->hwqp.q2_pbase;
1226                         nesqp->nesqp_context->q2_addr_low = cpu_to_le32((u32)u64temp);
1227                         nesqp->nesqp_context->q2_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1228                         nesqp->nesqp_context->aeq_token_low =  cpu_to_le32((u32)((unsigned long)(nesqp)));
1229                         nesqp->nesqp_context->aeq_token_high =  cpu_to_le32((u32)(upper_32_bits((unsigned long)(nesqp))));
1230                         nesqp->nesqp_context->ird_ord_sizes = cpu_to_le32(NES_QPCONTEXT_ORDIRD_ALSMM |
1231                                         NES_QPCONTEXT_ORDIRD_AAH |
1232                                         ((((u32)nesadapter->max_irrq_wr) <<
1233                                         NES_QPCONTEXT_ORDIRD_IRDSIZE_SHIFT) & NES_QPCONTEXT_ORDIRD_IRDSIZE_MASK));
1234                         if (disable_mpa_crc) {
1235                                 nes_debug(NES_DBG_QP, "Disabling MPA crc checking due to module option.\n");
1236                                 nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32(NES_QPCONTEXT_ORDIRD_RNMC);
1237                         }
1238
1239
1240                         /* Create the QP */
1241                         cqp_request = nes_get_cqp_request(nesdev);
1242                         if (cqp_request == NULL) {
1243                                 nes_debug(NES_DBG_QP, "Failed to get a cqp_request\n");
1244                                 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1245                                 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1246                                 kfree(nesqp->allocated_buffer);
1247                                 return ERR_PTR(-ENOMEM);
1248                         }
1249                         cqp_request->waiting = 1;
1250                         cqp_wqe = &cqp_request->cqp_wqe;
1251
1252                         if (!virt_wqs) {
1253                                 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP |
1254                                         NES_CQP_QP_IWARP_STATE_IDLE;
1255                         } else {
1256                                 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP | NES_CQP_QP_VIRT_WQS |
1257                                         NES_CQP_QP_IWARP_STATE_IDLE;
1258                         }
1259                         opcode |= NES_CQP_QP_CQS_VALID;
1260                         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1261                         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1262                         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
1263
1264                         u64temp = (u64)nesqp->nesqp_context_pbase;
1265                         set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp);
1266
1267                         atomic_set(&cqp_request->refcount, 2);
1268                         nes_post_cqp_request(nesdev, cqp_request);
1269
1270                         /* Wait for CQP */
1271                         nes_debug(NES_DBG_QP, "Waiting for create iWARP QP%u to complete.\n",
1272                                         nesqp->hwqp.qp_id);
1273                         ret = wait_event_timeout(cqp_request->waitq,
1274                                         (cqp_request->request_done != 0), NES_EVENT_TIMEOUT);
1275                         nes_debug(NES_DBG_QP, "Create iwarp QP%u completed, wait_event_timeout ret=%u,"
1276                                         " nesdev->cqp_head = %u, nesdev->cqp.sq_tail = %u,"
1277                                         " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1278                                         nesqp->hwqp.qp_id, ret, nesdev->cqp.sq_head, nesdev->cqp.sq_tail,
1279                                         cqp_request->major_code, cqp_request->minor_code);
1280                         if ((!ret) || (cqp_request->major_code)) {
1281                                 nes_put_cqp_request(nesdev, cqp_request);
1282                                 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1283                                 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1284                                 kfree(nesqp->allocated_buffer);
1285                                 if (!ret) {
1286                                         return ERR_PTR(-ETIME);
1287                                 } else {
1288                                         return ERR_PTR(-EIO);
1289                                 }
1290                         }
1291
1292                         nes_put_cqp_request(nesdev, cqp_request);
1293
1294                         if (ibpd->uobject) {
1295                                 uresp.mmap_sq_db_index = nesqp->mmap_sq_db_index;
1296                                 uresp.mmap_rq_db_index = 0;
1297                                 uresp.actual_sq_size = sq_size;
1298                                 uresp.actual_rq_size = rq_size;
1299                                 uresp.qp_id = nesqp->hwqp.qp_id;
1300                                 uresp.nes_drv_opt = nes_drv_opt;
1301                                 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
1302                                         nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1303                                         nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1304                                         kfree(nesqp->allocated_buffer);
1305                                         return ERR_PTR(-EFAULT);
1306                                 }
1307                         }
1308
1309                         nes_debug(NES_DBG_QP, "QP%u structure located @%p.Size = %u.\n",
1310                                         nesqp->hwqp.qp_id, nesqp, (u32)sizeof(*nesqp));
1311                         spin_lock_init(&nesqp->lock);
1312                         nes_add_ref(&nesqp->ibqp);
1313                         break;
1314                 default:
1315                         nes_debug(NES_DBG_QP, "Invalid QP type: %d\n", init_attr->qp_type);
1316                         return ERR_PTR(-EINVAL);
1317         }
1318
1319         nesqp->sig_all = (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR);
1320         init_timer(&nesqp->terminate_timer);
1321         nesqp->terminate_timer.function = nes_terminate_timeout;
1322         nesqp->terminate_timer.data = (unsigned long)nesqp;
1323
1324         /* update the QP table */
1325         nesdev->nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = nesqp;
1326         nes_debug(NES_DBG_QP, "netdev refcnt=%u\n",
1327                         netdev_refcnt_read(nesvnic->netdev));
1328
1329         return &nesqp->ibqp;
1330 }
1331
1332 /**
1333  * nes_clean_cq
1334  */
1335 static void nes_clean_cq(struct nes_qp *nesqp, struct nes_cq *nescq)
1336 {
1337         u32 cq_head;
1338         u32 lo;
1339         u32 hi;
1340         u64 u64temp;
1341         unsigned long flags = 0;
1342
1343         spin_lock_irqsave(&nescq->lock, flags);
1344
1345         cq_head = nescq->hw_cq.cq_head;
1346         while (le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_VALID) {
1347                 rmb();
1348                 lo = le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
1349                 hi = le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX]);
1350                 u64temp = (((u64)hi) << 32) | ((u64)lo);
1351                 u64temp &= ~(NES_SW_CONTEXT_ALIGN-1);
1352                 if (u64temp == (u64)(unsigned long)nesqp) {
1353                         /* Zero the context value so cqe will be ignored */
1354                         nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX] = 0;
1355                         nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX] = 0;
1356                 }
1357
1358                 if (++cq_head >= nescq->hw_cq.cq_size)
1359                         cq_head = 0;
1360         }
1361
1362         spin_unlock_irqrestore(&nescq->lock, flags);
1363 }
1364
1365
1366 /**
1367  * nes_destroy_qp
1368  */
1369 static int nes_destroy_qp(struct ib_qp *ibqp)
1370 {
1371         struct nes_qp *nesqp = to_nesqp(ibqp);
1372         struct nes_ucontext *nes_ucontext;
1373         struct ib_qp_attr attr;
1374         struct iw_cm_id *cm_id;
1375         struct iw_cm_event cm_event;
1376         int ret = 0;
1377
1378         atomic_inc(&sw_qps_destroyed);
1379         nesqp->destroyed = 1;
1380
1381         /* Blow away the connection if it exists. */
1382         if (nesqp->ibqp_state >= IB_QPS_INIT && nesqp->ibqp_state <= IB_QPS_RTS) {
1383                 /* if (nesqp->ibqp_state == IB_QPS_RTS) { */
1384                 attr.qp_state = IB_QPS_ERR;
1385                 nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL);
1386         }
1387
1388         if (((nesqp->ibqp_state == IB_QPS_INIT) ||
1389                         (nesqp->ibqp_state == IB_QPS_RTR)) && (nesqp->cm_id)) {
1390                 cm_id = nesqp->cm_id;
1391                 cm_event.event = IW_CM_EVENT_CONNECT_REPLY;
1392                 cm_event.status = -ETIMEDOUT;
1393                 cm_event.local_addr = cm_id->local_addr;
1394                 cm_event.remote_addr = cm_id->remote_addr;
1395                 cm_event.private_data = NULL;
1396                 cm_event.private_data_len = 0;
1397
1398                 nes_debug(NES_DBG_QP, "Generating a CM Timeout Event for "
1399                                 "QP%u. cm_id = %p, refcount = %u. \n",
1400                                 nesqp->hwqp.qp_id, cm_id, atomic_read(&nesqp->refcount));
1401
1402                 cm_id->rem_ref(cm_id);
1403                 ret = cm_id->event_handler(cm_id, &cm_event);
1404                 if (ret)
1405                         nes_debug(NES_DBG_QP, "OFA CM event_handler returned, ret=%d\n", ret);
1406         }
1407
1408         if (nesqp->user_mode) {
1409                 if ((ibqp->uobject)&&(ibqp->uobject->context)) {
1410                         nes_ucontext = to_nesucontext(ibqp->uobject->context);
1411                         clear_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1412                         nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = NULL;
1413                         if (nes_ucontext->first_free_wq > nesqp->mmap_sq_db_index) {
1414                                 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index;
1415                         }
1416                 }
1417                 if (nesqp->pbl_pbase && nesqp->sq_kmapped) {
1418                         nesqp->sq_kmapped = 0;
1419                         kunmap(nesqp->page);
1420                 }
1421         } else {
1422                 /* Clean any pending completions from the cq(s) */
1423                 if (nesqp->nesscq)
1424                         nes_clean_cq(nesqp, nesqp->nesscq);
1425
1426                 if ((nesqp->nesrcq) && (nesqp->nesrcq != nesqp->nesscq))
1427                         nes_clean_cq(nesqp, nesqp->nesrcq);
1428         }
1429         nes_rem_ref(&nesqp->ibqp);
1430         return 0;
1431 }
1432
1433
1434 /**
1435  * nes_create_cq
1436  */
1437 static struct ib_cq *nes_create_cq(struct ib_device *ibdev,
1438                                    const struct ib_cq_init_attr *attr,
1439                                    struct ib_ucontext *context,
1440                                    struct ib_udata *udata)
1441 {
1442         int entries = attr->cqe;
1443         u64 u64temp;
1444         struct nes_vnic *nesvnic = to_nesvnic(ibdev);
1445         struct nes_device *nesdev = nesvnic->nesdev;
1446         struct nes_adapter *nesadapter = nesdev->nesadapter;
1447         struct nes_cq *nescq;
1448         struct nes_ucontext *nes_ucontext = NULL;
1449         struct nes_cqp_request *cqp_request;
1450         void *mem = NULL;
1451         struct nes_hw_cqp_wqe *cqp_wqe;
1452         struct nes_pbl *nespbl = NULL;
1453         struct nes_create_cq_req req;
1454         struct nes_create_cq_resp resp;
1455         u32 cq_num = 0;
1456         u32 opcode = 0;
1457         u32 pbl_entries = 1;
1458         int err;
1459         unsigned long flags;
1460         int ret;
1461
1462         if (attr->flags)
1463                 return ERR_PTR(-EINVAL);
1464
1465         if (entries > nesadapter->max_cqe)
1466                 return ERR_PTR(-EINVAL);
1467
1468         err = nes_alloc_resource(nesadapter, nesadapter->allocated_cqs,
1469                         nesadapter->max_cq, &cq_num, &nesadapter->next_cq, NES_RESOURCE_CQ);
1470         if (err) {
1471                 return ERR_PTR(err);
1472         }
1473
1474         nescq = kzalloc(sizeof(struct nes_cq), GFP_KERNEL);
1475         if (!nescq) {
1476                 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1477                 nes_debug(NES_DBG_CQ, "Unable to allocate nes_cq struct\n");
1478                 return ERR_PTR(-ENOMEM);
1479         }
1480
1481         nescq->hw_cq.cq_size = max(entries + 1, 5);
1482         nescq->hw_cq.cq_number = cq_num;
1483         nescq->ibcq.cqe = nescq->hw_cq.cq_size - 1;
1484
1485
1486         if (context) {
1487                 nes_ucontext = to_nesucontext(context);
1488                 if (ib_copy_from_udata(&req, udata, sizeof (struct nes_create_cq_req))) {
1489                         nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1490                         kfree(nescq);
1491                         return ERR_PTR(-EFAULT);
1492                 }
1493                 nesvnic->mcrq_ucontext = nes_ucontext;
1494                 nes_ucontext->mcrqf = req.mcrqf;
1495                 if (nes_ucontext->mcrqf) {
1496                         if (nes_ucontext->mcrqf & 0x80000000)
1497                                 nescq->hw_cq.cq_number = nesvnic->nic.qp_id + 28 + 2 * ((nes_ucontext->mcrqf & 0xf) - 1);
1498                         else if (nes_ucontext->mcrqf & 0x40000000)
1499                                 nescq->hw_cq.cq_number = nes_ucontext->mcrqf & 0xffff;
1500                         else
1501                                 nescq->hw_cq.cq_number = nesvnic->mcrq_qp_id + nes_ucontext->mcrqf-1;
1502                         nescq->mcrqf = nes_ucontext->mcrqf;
1503                         nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1504                 }
1505                 nes_debug(NES_DBG_CQ, "CQ Virtual Address = %08lX, size = %u.\n",
1506                                 (unsigned long)req.user_cq_buffer, entries);
1507                 err = 1;
1508                 list_for_each_entry(nespbl, &nes_ucontext->cq_reg_mem_list, list) {
1509                         if (nespbl->user_base == (unsigned long )req.user_cq_buffer) {
1510                                 list_del(&nespbl->list);
1511                                 err = 0;
1512                                 nes_debug(NES_DBG_CQ, "Found PBL for virtual CQ. nespbl=%p.\n",
1513                                                 nespbl);
1514                                 break;
1515                         }
1516                 }
1517                 if (err) {
1518                         nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1519                         kfree(nescq);
1520                         return ERR_PTR(-EFAULT);
1521                 }
1522
1523                 pbl_entries = nespbl->pbl_size >> 3;
1524                 nescq->cq_mem_size = 0;
1525         } else {
1526                 nescq->cq_mem_size = nescq->hw_cq.cq_size * sizeof(struct nes_hw_cqe);
1527                 nes_debug(NES_DBG_CQ, "Attempting to allocate pci memory (%u entries, %u bytes) for CQ%u.\n",
1528                                 entries, nescq->cq_mem_size, nescq->hw_cq.cq_number);
1529
1530                 /* allocate the physical buffer space */
1531                 mem = pci_zalloc_consistent(nesdev->pcidev, nescq->cq_mem_size,
1532                                             &nescq->hw_cq.cq_pbase);
1533                 if (!mem) {
1534                         printk(KERN_ERR PFX "Unable to allocate pci memory for cq\n");
1535                         nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1536                         kfree(nescq);
1537                         return ERR_PTR(-ENOMEM);
1538                 }
1539
1540                 nescq->hw_cq.cq_vbase = mem;
1541                 nescq->hw_cq.cq_head = 0;
1542                 nes_debug(NES_DBG_CQ, "CQ%u virtual address @ %p, phys = 0x%08X\n",
1543                                 nescq->hw_cq.cq_number, nescq->hw_cq.cq_vbase,
1544                                 (u32)nescq->hw_cq.cq_pbase);
1545         }
1546
1547         nescq->hw_cq.ce_handler = nes_iwarp_ce_handler;
1548         spin_lock_init(&nescq->lock);
1549
1550         /* send CreateCQ request to CQP */
1551         cqp_request = nes_get_cqp_request(nesdev);
1552         if (cqp_request == NULL) {
1553                 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1554                 if (!context)
1555                         pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1556                                         nescq->hw_cq.cq_pbase);
1557                 else {
1558                         pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1559                                             nespbl->pbl_vbase, nespbl->pbl_pbase);
1560                         kfree(nespbl);
1561                 }
1562
1563                 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1564                 kfree(nescq);
1565                 return ERR_PTR(-ENOMEM);
1566         }
1567         cqp_request->waiting = 1;
1568         cqp_wqe = &cqp_request->cqp_wqe;
1569
1570         opcode = NES_CQP_CREATE_CQ | NES_CQP_CQ_CEQ_VALID |
1571                         NES_CQP_CQ_CHK_OVERFLOW |
1572                         NES_CQP_CQ_CEQE_MASK | ((u32)nescq->hw_cq.cq_size << 16);
1573
1574         spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1575
1576         if (pbl_entries != 1) {
1577                 if (pbl_entries > 32) {
1578                         /* use 4k pbl */
1579                         nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 4k PBL\n", pbl_entries);
1580                         if (nesadapter->free_4kpbl == 0) {
1581                                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1582                                 nes_free_cqp_request(nesdev, cqp_request);
1583                                 if (!context)
1584                                         pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1585                                                         nescq->hw_cq.cq_pbase);
1586                                 else {
1587                                         pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1588                                                             nespbl->pbl_vbase, nespbl->pbl_pbase);
1589                                         kfree(nespbl);
1590                                 }
1591                                 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1592                                 kfree(nescq);
1593                                 return ERR_PTR(-ENOMEM);
1594                         } else {
1595                                 opcode |= (NES_CQP_CQ_VIRT | NES_CQP_CQ_4KB_CHUNK);
1596                                 nescq->virtual_cq = 2;
1597                                 nesadapter->free_4kpbl--;
1598                         }
1599                 } else {
1600                         /* use 256 byte pbl */
1601                         nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 256 byte PBL\n", pbl_entries);
1602                         if (nesadapter->free_256pbl == 0) {
1603                                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1604                                 nes_free_cqp_request(nesdev, cqp_request);
1605                                 if (!context)
1606                                         pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1607                                                         nescq->hw_cq.cq_pbase);
1608                                 else {
1609                                         pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1610                                                             nespbl->pbl_vbase, nespbl->pbl_pbase);
1611                                         kfree(nespbl);
1612                                 }
1613                                 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1614                                 kfree(nescq);
1615                                 return ERR_PTR(-ENOMEM);
1616                         } else {
1617                                 opcode |= NES_CQP_CQ_VIRT;
1618                                 nescq->virtual_cq = 1;
1619                                 nesadapter->free_256pbl--;
1620                         }
1621                 }
1622         }
1623
1624         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1625
1626         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1627         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1628         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1629                         (nescq->hw_cq.cq_number | ((u32)nesdev->ceq_index << 16)));
1630
1631         if (context) {
1632                 if (pbl_entries != 1)
1633                         u64temp = (u64)nespbl->pbl_pbase;
1634                 else
1635                         u64temp = le64_to_cpu(nespbl->pbl_vbase[0]);
1636                 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX,
1637                                 nes_ucontext->mmap_db_index[0]);
1638         } else {
1639                 u64temp = (u64)nescq->hw_cq.cq_pbase;
1640                 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX] = 0;
1641         }
1642         set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_PBL_LOW_IDX, u64temp);
1643         cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] = 0;
1644         u64temp = (u64)(unsigned long)&nescq->hw_cq;
1645         cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_LOW_IDX] =
1646                         cpu_to_le32((u32)(u64temp >> 1));
1647         cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] =
1648                         cpu_to_le32(((u32)((u64temp) >> 33)) & 0x7FFFFFFF);
1649
1650         atomic_set(&cqp_request->refcount, 2);
1651         nes_post_cqp_request(nesdev, cqp_request);
1652
1653         /* Wait for CQP */
1654         nes_debug(NES_DBG_CQ, "Waiting for create iWARP CQ%u to complete.\n",
1655                         nescq->hw_cq.cq_number);
1656         ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1657                         NES_EVENT_TIMEOUT * 2);
1658         nes_debug(NES_DBG_CQ, "Create iWARP CQ%u completed, wait_event_timeout ret = %d.\n",
1659                         nescq->hw_cq.cq_number, ret);
1660         if ((!ret) || (cqp_request->major_code)) {
1661                 nes_put_cqp_request(nesdev, cqp_request);
1662                 if (!context)
1663                         pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1664                                         nescq->hw_cq.cq_pbase);
1665                 else {
1666                         pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1667                                             nespbl->pbl_vbase, nespbl->pbl_pbase);
1668                         kfree(nespbl);
1669                 }
1670                 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1671                 kfree(nescq);
1672                 return ERR_PTR(-EIO);
1673         }
1674         nes_put_cqp_request(nesdev, cqp_request);
1675
1676         if (context) {
1677                 /* free the nespbl */
1678                 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1679                                 nespbl->pbl_pbase);
1680                 kfree(nespbl);
1681                 resp.cq_id = nescq->hw_cq.cq_number;
1682                 resp.cq_size = nescq->hw_cq.cq_size;
1683                 resp.mmap_db_index = 0;
1684                 if (ib_copy_to_udata(udata, &resp, sizeof resp - sizeof resp.reserved)) {
1685                         nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1686                         kfree(nescq);
1687                         return ERR_PTR(-EFAULT);
1688                 }
1689         }
1690
1691         return &nescq->ibcq;
1692 }
1693
1694
1695 /**
1696  * nes_destroy_cq
1697  */
1698 static int nes_destroy_cq(struct ib_cq *ib_cq)
1699 {
1700         struct nes_cq *nescq;
1701         struct nes_device *nesdev;
1702         struct nes_vnic *nesvnic;
1703         struct nes_adapter *nesadapter;
1704         struct nes_hw_cqp_wqe *cqp_wqe;
1705         struct nes_cqp_request *cqp_request;
1706         unsigned long flags;
1707         u32 opcode = 0;
1708         int ret;
1709
1710         if (ib_cq == NULL)
1711                 return 0;
1712
1713         nescq = to_nescq(ib_cq);
1714         nesvnic = to_nesvnic(ib_cq->device);
1715         nesdev = nesvnic->nesdev;
1716         nesadapter = nesdev->nesadapter;
1717
1718         nes_debug(NES_DBG_CQ, "Destroy CQ%u\n", nescq->hw_cq.cq_number);
1719
1720         /* Send DestroyCQ request to CQP */
1721         cqp_request = nes_get_cqp_request(nesdev);
1722         if (cqp_request == NULL) {
1723                 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1724                 return -ENOMEM;
1725         }
1726         cqp_request->waiting = 1;
1727         cqp_wqe = &cqp_request->cqp_wqe;
1728         opcode = NES_CQP_DESTROY_CQ | (nescq->hw_cq.cq_size << 16);
1729         spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1730         if (nescq->virtual_cq == 1) {
1731                 nesadapter->free_256pbl++;
1732                 if (nesadapter->free_256pbl > nesadapter->max_256pbl) {
1733                         printk(KERN_ERR PFX "%s: free 256B PBLs(%u) has exceeded the max(%u)\n",
1734                                         __func__, nesadapter->free_256pbl, nesadapter->max_256pbl);
1735                 }
1736         } else if (nescq->virtual_cq == 2) {
1737                 nesadapter->free_4kpbl++;
1738                 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl) {
1739                         printk(KERN_ERR PFX "%s: free 4K PBLs(%u) has exceeded the max(%u)\n",
1740                                         __func__, nesadapter->free_4kpbl, nesadapter->max_4kpbl);
1741                 }
1742                 opcode |= NES_CQP_CQ_4KB_CHUNK;
1743         }
1744
1745         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1746
1747         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1748         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1749         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1750                 (nescq->hw_cq.cq_number | ((u32)PCI_FUNC(nesdev->pcidev->devfn) << 16)));
1751         if (!nescq->mcrqf)
1752                 nes_free_resource(nesadapter, nesadapter->allocated_cqs, nescq->hw_cq.cq_number);
1753
1754         atomic_set(&cqp_request->refcount, 2);
1755         nes_post_cqp_request(nesdev, cqp_request);
1756
1757         /* Wait for CQP */
1758         nes_debug(NES_DBG_CQ, "Waiting for destroy iWARP CQ%u to complete.\n",
1759                         nescq->hw_cq.cq_number);
1760         ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1761                         NES_EVENT_TIMEOUT);
1762         nes_debug(NES_DBG_CQ, "Destroy iWARP CQ%u completed, wait_event_timeout ret = %u,"
1763                         " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1764                         nescq->hw_cq.cq_number, ret, cqp_request->major_code,
1765                         cqp_request->minor_code);
1766         if (!ret) {
1767                 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy timeout expired\n",
1768                                         nescq->hw_cq.cq_number);
1769                 ret = -ETIME;
1770         } else if (cqp_request->major_code) {
1771                 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy failed\n",
1772                                         nescq->hw_cq.cq_number);
1773                 ret = -EIO;
1774         } else {
1775                 ret = 0;
1776         }
1777         nes_put_cqp_request(nesdev, cqp_request);
1778
1779         if (nescq->cq_mem_size)
1780                 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size,
1781                                     nescq->hw_cq.cq_vbase, nescq->hw_cq.cq_pbase);
1782         kfree(nescq);
1783
1784         return ret;
1785 }
1786
1787 /**
1788  * root_256
1789  */
1790 static u32 root_256(struct nes_device *nesdev,
1791                     struct nes_root_vpbl *root_vpbl,
1792                     struct nes_root_vpbl *new_root,
1793                     u16 pbl_count_4k)
1794 {
1795         u64 leaf_pbl;
1796         int i, j, k;
1797
1798         if (pbl_count_4k == 1) {
1799                 new_root->pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
1800                                                 512, &new_root->pbl_pbase);
1801
1802                 if (new_root->pbl_vbase == NULL)
1803                         return 0;
1804
1805                 leaf_pbl = (u64)root_vpbl->pbl_pbase;
1806                 for (i = 0; i < 16; i++) {
1807                         new_root->pbl_vbase[i].pa_low =
1808                                 cpu_to_le32((u32)leaf_pbl);
1809                         new_root->pbl_vbase[i].pa_high =
1810                                 cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
1811                         leaf_pbl += 256;
1812                 }
1813         } else {
1814                 for (i = 3; i >= 0; i--) {
1815                         j = i * 16;
1816                         root_vpbl->pbl_vbase[j] = root_vpbl->pbl_vbase[i];
1817                         leaf_pbl = le32_to_cpu(root_vpbl->pbl_vbase[j].pa_low) +
1818                             (((u64)le32_to_cpu(root_vpbl->pbl_vbase[j].pa_high))
1819                                 << 32);
1820                         for (k = 1; k < 16; k++) {
1821                                 leaf_pbl += 256;
1822                                 root_vpbl->pbl_vbase[j + k].pa_low =
1823                                                 cpu_to_le32((u32)leaf_pbl);
1824                                 root_vpbl->pbl_vbase[j + k].pa_high =
1825                                     cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
1826                         }
1827                 }
1828         }
1829
1830         return 1;
1831 }
1832
1833
1834 /**
1835  * nes_reg_mr
1836  */
1837 static int nes_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd,
1838                 u32 stag, u64 region_length, struct nes_root_vpbl *root_vpbl,
1839                 dma_addr_t single_buffer, u16 pbl_count_4k,
1840                 u16 residual_page_count_4k, int acc, u64 *iova_start,
1841                 u16 *actual_pbl_cnt, u8 *used_4k_pbls)
1842 {
1843         struct nes_hw_cqp_wqe *cqp_wqe;
1844         struct nes_cqp_request *cqp_request;
1845         unsigned long flags;
1846         int ret;
1847         struct nes_adapter *nesadapter = nesdev->nesadapter;
1848         uint pg_cnt = 0;
1849         u16 pbl_count_256 = 0;
1850         u16 pbl_count = 0;
1851         u8  use_256_pbls = 0;
1852         u8  use_4k_pbls = 0;
1853         u16 use_two_level = (pbl_count_4k > 1) ? 1 : 0;
1854         struct nes_root_vpbl new_root = { 0, NULL, NULL };
1855         u32 opcode = 0;
1856         u16 major_code;
1857
1858         /* Register the region with the adapter */
1859         cqp_request = nes_get_cqp_request(nesdev);
1860         if (cqp_request == NULL) {
1861                 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
1862                 return -ENOMEM;
1863         }
1864         cqp_request->waiting = 1;
1865         cqp_wqe = &cqp_request->cqp_wqe;
1866
1867         if (pbl_count_4k) {
1868                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1869
1870                 pg_cnt = ((pbl_count_4k - 1) * 512) + residual_page_count_4k;
1871                 pbl_count_256 = (pg_cnt + 31) / 32;
1872                 if (pg_cnt <= 32) {
1873                         if (pbl_count_256 <= nesadapter->free_256pbl)
1874                                 use_256_pbls = 1;
1875                         else if (pbl_count_4k <= nesadapter->free_4kpbl)
1876                                 use_4k_pbls = 1;
1877                 } else if (pg_cnt <= 2048) {
1878                         if (((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) &&
1879                             (nesadapter->free_4kpbl > (nesadapter->max_4kpbl >> 1))) {
1880                                 use_4k_pbls = 1;
1881                         } else if ((pbl_count_256 + 1) <= nesadapter->free_256pbl) {
1882                                 use_256_pbls = 1;
1883                                 use_two_level = 1;
1884                         } else if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
1885                                 use_4k_pbls = 1;
1886                         }
1887                 } else {
1888                         if ((pbl_count_4k + 1) <= nesadapter->free_4kpbl)
1889                                 use_4k_pbls = 1;
1890                 }
1891
1892                 if (use_256_pbls) {
1893                         pbl_count = pbl_count_256;
1894                         nesadapter->free_256pbl -= pbl_count + use_two_level;
1895                 } else if (use_4k_pbls) {
1896                         pbl_count =  pbl_count_4k;
1897                         nesadapter->free_4kpbl -= pbl_count + use_two_level;
1898                 } else {
1899                         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1900                         nes_debug(NES_DBG_MR, "Out of Pbls\n");
1901                         nes_free_cqp_request(nesdev, cqp_request);
1902                         return -ENOMEM;
1903                 }
1904
1905                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1906         }
1907
1908         if (use_256_pbls && use_two_level) {
1909                 if (root_256(nesdev, root_vpbl, &new_root, pbl_count_4k) == 1) {
1910                         if (new_root.pbl_pbase != 0)
1911                                 root_vpbl = &new_root;
1912                 } else {
1913                         spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1914                         nesadapter->free_256pbl += pbl_count_256 + use_two_level;
1915                         use_256_pbls = 0;
1916
1917                         if (pbl_count_4k == 1)
1918                                 use_two_level = 0;
1919                         pbl_count = pbl_count_4k;
1920
1921                         if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
1922                                 nesadapter->free_4kpbl -= pbl_count + use_two_level;
1923                                 use_4k_pbls = 1;
1924                         }
1925                         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1926
1927                         if (use_4k_pbls == 0)
1928                                 return -ENOMEM;
1929                 }
1930         }
1931
1932         opcode = NES_CQP_REGISTER_STAG | NES_CQP_STAG_RIGHTS_LOCAL_READ |
1933                                         NES_CQP_STAG_VA_TO | NES_CQP_STAG_MR;
1934         if (acc & IB_ACCESS_LOCAL_WRITE)
1935                 opcode |= NES_CQP_STAG_RIGHTS_LOCAL_WRITE;
1936         if (acc & IB_ACCESS_REMOTE_WRITE)
1937                 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_REM_ACC_EN;
1938         if (acc & IB_ACCESS_REMOTE_READ)
1939                 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_READ | NES_CQP_STAG_REM_ACC_EN;
1940         if (acc & IB_ACCESS_MW_BIND)
1941                 opcode |= NES_CQP_STAG_RIGHTS_WINDOW_BIND | NES_CQP_STAG_REM_ACC_EN;
1942
1943         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1944         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1945         set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, *iova_start);
1946         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, region_length);
1947
1948         cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] =
1949                         cpu_to_le32((u32)(region_length >> 8) & 0xff000000);
1950         cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |=
1951                         cpu_to_le32(nespd->pd_id & 0x00007fff);
1952         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
1953
1954         if (pbl_count == 0) {
1955                 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, single_buffer);
1956         } else {
1957                 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, root_vpbl->pbl_pbase);
1958                 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, pbl_count);
1959                 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX, (pg_cnt * 8));
1960
1961                 if (use_4k_pbls)
1962                         cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE);
1963         }
1964         barrier();
1965
1966         atomic_set(&cqp_request->refcount, 2);
1967         nes_post_cqp_request(nesdev, cqp_request);
1968
1969         /* Wait for CQP */
1970         ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1971                         NES_EVENT_TIMEOUT);
1972         nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
1973                         " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1974                         stag, ret, cqp_request->major_code, cqp_request->minor_code);
1975         major_code = cqp_request->major_code;
1976         nes_put_cqp_request(nesdev, cqp_request);
1977
1978         if ((!ret || major_code) && pbl_count != 0) {
1979                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1980                 if (use_256_pbls)
1981                         nesadapter->free_256pbl += pbl_count + use_two_level;
1982                 else if (use_4k_pbls)
1983                         nesadapter->free_4kpbl += pbl_count + use_two_level;
1984                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1985         }
1986         if (new_root.pbl_pbase)
1987                 pci_free_consistent(nesdev->pcidev, 512, new_root.pbl_vbase,
1988                                     new_root.pbl_pbase);
1989
1990         if (!ret)
1991                 return -ETIME;
1992         else if (major_code)
1993                 return -EIO;
1994
1995         *actual_pbl_cnt = pbl_count + use_two_level;
1996         *used_4k_pbls = use_4k_pbls;
1997         return 0;
1998 }
1999
2000
2001 /**
2002  * nes_reg_phys_mr
2003  */
2004 struct ib_mr *nes_reg_phys_mr(struct ib_pd *ib_pd, u64 addr, u64 size,
2005                 int acc, u64 *iova_start)
2006 {
2007         u64 region_length;
2008         struct nes_pd *nespd = to_nespd(ib_pd);
2009         struct nes_vnic *nesvnic = to_nesvnic(ib_pd->device);
2010         struct nes_device *nesdev = nesvnic->nesdev;
2011         struct nes_adapter *nesadapter = nesdev->nesadapter;
2012         struct nes_mr *nesmr;
2013         struct ib_mr *ibmr;
2014         struct nes_vpbl vpbl;
2015         struct nes_root_vpbl root_vpbl;
2016         u32 stag;
2017         unsigned long mask;
2018         u32 stag_index = 0;
2019         u32 next_stag_index = 0;
2020         u32 driver_key = 0;
2021         int err = 0;
2022         int ret = 0;
2023         u16 pbl_count = 0;
2024         u8 single_page = 1;
2025         u8 stag_key = 0;
2026
2027         region_length = 0;
2028         vpbl.pbl_vbase = NULL;
2029         root_vpbl.pbl_vbase = NULL;
2030         root_vpbl.pbl_pbase = 0;
2031
2032         get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2033         stag_key = (u8)next_stag_index;
2034
2035         driver_key = 0;
2036
2037         next_stag_index >>= 8;
2038         next_stag_index %= nesadapter->max_mr;
2039
2040         if ((addr ^ *iova_start) & ~PAGE_MASK)
2041                 return ERR_PTR(-EINVAL);
2042
2043         err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs, nesadapter->max_mr,
2044                         &stag_index, &next_stag_index, NES_RESOURCE_PHYS_MR);
2045         if (err) {
2046                 return ERR_PTR(err);
2047         }
2048
2049         nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2050         if (!nesmr) {
2051                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2052                 return ERR_PTR(-ENOMEM);
2053         }
2054
2055         /* Allocate a 4K buffer for the PBL */
2056         vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2057                         &vpbl.pbl_pbase);
2058         nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%016lX\n",
2059                         vpbl.pbl_vbase, (unsigned long)vpbl.pbl_pbase);
2060         if (!vpbl.pbl_vbase) {
2061                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2062                 ibmr = ERR_PTR(-ENOMEM);
2063                 kfree(nesmr);
2064                 goto reg_phys_err;
2065         }
2066
2067
2068         mask = !size;
2069
2070         if (mask & ~PAGE_MASK) {
2071                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2072                 nes_debug(NES_DBG_MR, "Invalid buffer addr or size\n");
2073                 ibmr = ERR_PTR(-EINVAL);
2074                 kfree(nesmr);
2075                 goto reg_phys_err;
2076         }
2077
2078         region_length += size;
2079         vpbl.pbl_vbase[0].pa_low = cpu_to_le32((u32)addr & PAGE_MASK);
2080         vpbl.pbl_vbase[0].pa_high = cpu_to_le32((u32)((((u64)addr) >> 32)));
2081
2082         stag = stag_index << 8;
2083         stag |= driver_key;
2084         stag += (u32)stag_key;
2085
2086         nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%016lX,"
2087                         " length = 0x%016lX, index = 0x%08X\n",
2088                         stag, (unsigned long)*iova_start, (unsigned long)region_length, stag_index);
2089
2090         /* Make the leaf PBL the root if only one PBL */
2091         root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2092
2093         if (single_page) {
2094                 pbl_count = 0;
2095         } else {
2096                 pbl_count = 1;
2097         }
2098         ret = nes_reg_mr(nesdev, nespd, stag, region_length, &root_vpbl,
2099                         addr, pbl_count, 1, acc, iova_start,
2100                         &nesmr->pbls_used, &nesmr->pbl_4k);
2101
2102         if (ret == 0) {
2103                 nesmr->ibmr.rkey = stag;
2104                 nesmr->ibmr.lkey = stag;
2105                 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2106                 ibmr = &nesmr->ibmr;
2107         } else {
2108                 kfree(nesmr);
2109                 ibmr = ERR_PTR(-ENOMEM);
2110         }
2111
2112 reg_phys_err:
2113         /* single PBL case */
2114         pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, vpbl.pbl_pbase);
2115         return ibmr;
2116 }
2117
2118
2119 /**
2120  * nes_get_dma_mr
2121  */
2122 static struct ib_mr *nes_get_dma_mr(struct ib_pd *pd, int acc)
2123 {
2124         u64 kva = 0;
2125
2126         nes_debug(NES_DBG_MR, "\n");
2127
2128         return nes_reg_phys_mr(pd, 0, 0xffffffffffULL, acc, &kva);
2129 }
2130
2131 /**
2132  * nes_reg_user_mr
2133  */
2134 static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
2135                 u64 virt, int acc, struct ib_udata *udata)
2136 {
2137         u64 iova_start;
2138         __le64 *pbl;
2139         u64 region_length;
2140         dma_addr_t last_dma_addr = 0;
2141         dma_addr_t first_dma_addr = 0;
2142         struct nes_pd *nespd = to_nespd(pd);
2143         struct nes_vnic *nesvnic = to_nesvnic(pd->device);
2144         struct nes_device *nesdev = nesvnic->nesdev;
2145         struct nes_adapter *nesadapter = nesdev->nesadapter;
2146         struct ib_mr *ibmr = ERR_PTR(-EINVAL);
2147         struct scatterlist *sg;
2148         struct nes_ucontext *nes_ucontext;
2149         struct nes_pbl *nespbl;
2150         struct nes_mr *nesmr;
2151         struct ib_umem *region;
2152         struct nes_mem_reg_req req;
2153         struct nes_vpbl vpbl;
2154         struct nes_root_vpbl root_vpbl;
2155         int entry, page_index;
2156         int page_count = 0;
2157         int err, pbl_depth = 0;
2158         int chunk_pages;
2159         int ret;
2160         u32 stag;
2161         u32 stag_index = 0;
2162         u32 next_stag_index;
2163         u32 driver_key;
2164         u32 root_pbl_index = 0;
2165         u32 cur_pbl_index = 0;
2166         u32 skip_pages;
2167         u16 pbl_count;
2168         u8 single_page = 1;
2169         u8 stag_key;
2170         int first_page = 1;
2171
2172         region = ib_umem_get(pd->uobject->context, start, length, acc, 0);
2173         if (IS_ERR(region)) {
2174                 return (struct ib_mr *)region;
2175         }
2176
2177         nes_debug(NES_DBG_MR, "User base = 0x%lX, Virt base = 0x%lX, length = %u,"
2178                         " offset = %u, page size = %u.\n",
2179                         (unsigned long int)start, (unsigned long int)virt, (u32)length,
2180                         ib_umem_offset(region), region->page_size);
2181
2182         skip_pages = ((u32)ib_umem_offset(region)) >> 12;
2183
2184         if (ib_copy_from_udata(&req, udata, sizeof(req))) {
2185                 ib_umem_release(region);
2186                 return ERR_PTR(-EFAULT);
2187         }
2188         nes_debug(NES_DBG_MR, "Memory Registration type = %08X.\n", req.reg_type);
2189
2190         switch (req.reg_type) {
2191                 case IWNES_MEMREG_TYPE_MEM:
2192                         pbl_depth = 0;
2193                         region_length = 0;
2194                         vpbl.pbl_vbase = NULL;
2195                         root_vpbl.pbl_vbase = NULL;
2196                         root_vpbl.pbl_pbase = 0;
2197
2198                         get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2199                         stag_key = (u8)next_stag_index;
2200
2201                         driver_key = next_stag_index & 0x70000000;
2202
2203                         next_stag_index >>= 8;
2204                         next_stag_index %= nesadapter->max_mr;
2205
2206                         err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
2207                                         nesadapter->max_mr, &stag_index, &next_stag_index, NES_RESOURCE_USER_MR);
2208                         if (err) {
2209                                 ib_umem_release(region);
2210                                 return ERR_PTR(err);
2211                         }
2212
2213                         nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2214                         if (!nesmr) {
2215                                 ib_umem_release(region);
2216                                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2217                                 return ERR_PTR(-ENOMEM);
2218                         }
2219                         nesmr->region = region;
2220
2221                         for_each_sg(region->sg_head.sgl, sg, region->nmap, entry) {
2222                                 if (sg_dma_address(sg) & ~PAGE_MASK) {
2223                                         ib_umem_release(region);
2224                                         nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2225                                         nes_debug(NES_DBG_MR, "Unaligned Memory Buffer: 0x%x\n",
2226                                                   (unsigned int) sg_dma_address(sg));
2227                                         ibmr = ERR_PTR(-EINVAL);
2228                                         kfree(nesmr);
2229                                         goto reg_user_mr_err;
2230                                 }
2231
2232                                 if (!sg_dma_len(sg)) {
2233                                         ib_umem_release(region);
2234                                         nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2235                                                           stag_index);
2236                                         nes_debug(NES_DBG_MR, "Invalid Buffer Size\n");
2237                                         ibmr = ERR_PTR(-EINVAL);
2238                                         kfree(nesmr);
2239                                         goto reg_user_mr_err;
2240                                 }
2241
2242                                 region_length += sg_dma_len(sg);
2243                                 chunk_pages = sg_dma_len(sg) >> 12;
2244                                 region_length -= skip_pages << 12;
2245                                 for (page_index = skip_pages; page_index < chunk_pages; page_index++) {
2246                                         skip_pages = 0;
2247                                         if ((page_count != 0) && (page_count << 12) - (ib_umem_offset(region) & (4096 - 1)) >= region->length)
2248                                                 goto enough_pages;
2249                                         if ((page_count&0x01FF) == 0) {
2250                                                 if (page_count >= 1024 * 512) {
2251                                                         ib_umem_release(region);
2252                                                         nes_free_resource(nesadapter,
2253                                                                           nesadapter->allocated_mrs, stag_index);
2254                                                         kfree(nesmr);
2255                                                         ibmr = ERR_PTR(-E2BIG);
2256                                                         goto reg_user_mr_err;
2257                                                 }
2258                                                 if (root_pbl_index == 1) {
2259                                                         root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
2260                                                                         8192, &root_vpbl.pbl_pbase);
2261                                                         nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2262                                                                   root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2263                                                         if (!root_vpbl.pbl_vbase) {
2264                                                                 ib_umem_release(region);
2265                                                                 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2266                                                                                     vpbl.pbl_pbase);
2267                                                                 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2268                                                                                   stag_index);
2269                                                                 kfree(nesmr);
2270                                                                 ibmr = ERR_PTR(-ENOMEM);
2271                                                                 goto reg_user_mr_err;
2272                                                         }
2273                                                         root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024,
2274                                                                         GFP_KERNEL);
2275                                                         if (!root_vpbl.leaf_vpbl) {
2276                                                                 ib_umem_release(region);
2277                                                                 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2278                                                                                     root_vpbl.pbl_pbase);
2279                                                                 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2280                                                                                     vpbl.pbl_pbase);
2281                                                                 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2282                                                                                   stag_index);
2283                                                                 kfree(nesmr);
2284                                                                 ibmr = ERR_PTR(-ENOMEM);
2285                                                                 goto reg_user_mr_err;
2286                                                         }
2287                                                         root_vpbl.pbl_vbase[0].pa_low =
2288                                                                         cpu_to_le32((u32)vpbl.pbl_pbase);
2289                                                         root_vpbl.pbl_vbase[0].pa_high =
2290                                                                         cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2291                                                         root_vpbl.leaf_vpbl[0] = vpbl;
2292                                                 }
2293                                                 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2294                                                                 &vpbl.pbl_pbase);
2295                                                 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%08X\n",
2296                                                           vpbl.pbl_vbase, (unsigned int)vpbl.pbl_pbase);
2297                                                 if (!vpbl.pbl_vbase) {
2298                                                         ib_umem_release(region);
2299                                                         nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2300                                                         ibmr = ERR_PTR(-ENOMEM);
2301                                                         kfree(nesmr);
2302                                                         goto reg_user_mr_err;
2303                                                 }
2304                                                 if (1 <= root_pbl_index) {
2305                                                         root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2306                                                                         cpu_to_le32((u32)vpbl.pbl_pbase);
2307                                                         root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2308                                                                         cpu_to_le32((u32)((((u64)vpbl.pbl_pbase)>>32)));
2309                                                         root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2310                                                 }
2311                                                 root_pbl_index++;
2312                                                 cur_pbl_index = 0;
2313                                         }
2314                                         if (single_page) {
2315                                                 if (page_count != 0) {
2316                                                         if ((last_dma_addr+4096) !=
2317                                                                         (sg_dma_address(sg)+
2318                                                                         (page_index*4096)))
2319                                                                 single_page = 0;
2320                                                         last_dma_addr = sg_dma_address(sg)+
2321                                                                         (page_index*4096);
2322                                                 } else {
2323                                                         first_dma_addr = sg_dma_address(sg)+
2324                                                                         (page_index*4096);
2325                                                         last_dma_addr = first_dma_addr;
2326                                                 }
2327                                         }
2328
2329                                         vpbl.pbl_vbase[cur_pbl_index].pa_low =
2330                                                         cpu_to_le32((u32)(sg_dma_address(sg)+
2331                                                         (page_index*4096)));
2332                                         vpbl.pbl_vbase[cur_pbl_index].pa_high =
2333                                                         cpu_to_le32((u32)((((u64)(sg_dma_address(sg)+
2334                                                         (page_index*4096))) >> 32)));
2335                                         cur_pbl_index++;
2336                                         page_count++;
2337                                 }
2338                         }
2339
2340                         enough_pages:
2341                         nes_debug(NES_DBG_MR, "calculating stag, stag_index=0x%08x, driver_key=0x%08x,"
2342                                         " stag_key=0x%08x\n",
2343                                         stag_index, driver_key, stag_key);
2344                         stag = stag_index << 8;
2345                         stag |= driver_key;
2346                         stag += (u32)stag_key;
2347
2348                         iova_start = virt;
2349                         /* Make the leaf PBL the root if only one PBL */
2350                         if (root_pbl_index == 1) {
2351                                 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2352                         }
2353
2354                         if (single_page) {
2355                                 pbl_count = 0;
2356                         } else {
2357                                 pbl_count = root_pbl_index;
2358                                 first_dma_addr = 0;
2359                         }
2360                         nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%08X, length = 0x%08X,"
2361                                         " index = 0x%08X, region->length=0x%08llx, pbl_count = %u\n",
2362                                         stag, (unsigned int)iova_start,
2363                                         (unsigned int)region_length, stag_index,
2364                                         (unsigned long long)region->length, pbl_count);
2365                         ret = nes_reg_mr(nesdev, nespd, stag, region->length, &root_vpbl,
2366                                          first_dma_addr, pbl_count, (u16)cur_pbl_index, acc,
2367                                          &iova_start, &nesmr->pbls_used, &nesmr->pbl_4k);
2368
2369                         nes_debug(NES_DBG_MR, "ret=%d\n", ret);
2370
2371                         if (ret == 0) {
2372                                 nesmr->ibmr.rkey = stag;
2373                                 nesmr->ibmr.lkey = stag;
2374                                 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2375                                 ibmr = &nesmr->ibmr;
2376                         } else {
2377                                 ib_umem_release(region);
2378                                 kfree(nesmr);
2379                                 ibmr = ERR_PTR(-ENOMEM);
2380                         }
2381
2382                         reg_user_mr_err:
2383                         /* free the resources */
2384                         if (root_pbl_index == 1) {
2385                                 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2386                                                 vpbl.pbl_pbase);
2387                         } else {
2388                                 for (page_index=0; page_index<root_pbl_index; page_index++) {
2389                                         pci_free_consistent(nesdev->pcidev, 4096,
2390                                                         root_vpbl.leaf_vpbl[page_index].pbl_vbase,
2391                                                         root_vpbl.leaf_vpbl[page_index].pbl_pbase);
2392                                 }
2393                                 kfree(root_vpbl.leaf_vpbl);
2394                                 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2395                                                 root_vpbl.pbl_pbase);
2396                         }
2397
2398                         nes_debug(NES_DBG_MR, "Leaving, ibmr=%p", ibmr);
2399
2400                         return ibmr;
2401                 case IWNES_MEMREG_TYPE_QP:
2402                 case IWNES_MEMREG_TYPE_CQ:
2403                         if (!region->length) {
2404                                 nes_debug(NES_DBG_MR, "Unable to register zero length region for CQ\n");
2405                                 ib_umem_release(region);
2406                                 return ERR_PTR(-EINVAL);
2407                         }
2408                         nespbl = kzalloc(sizeof(*nespbl), GFP_KERNEL);
2409                         if (!nespbl) {
2410                                 nes_debug(NES_DBG_MR, "Unable to allocate PBL\n");
2411                                 ib_umem_release(region);
2412                                 return ERR_PTR(-ENOMEM);
2413                         }
2414                         nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2415                         if (!nesmr) {
2416                                 ib_umem_release(region);
2417                                 kfree(nespbl);
2418                                 nes_debug(NES_DBG_MR, "Unable to allocate nesmr\n");
2419                                 return ERR_PTR(-ENOMEM);
2420                         }
2421                         nesmr->region = region;
2422                         nes_ucontext = to_nesucontext(pd->uobject->context);
2423                         pbl_depth = region->length >> 12;
2424                         pbl_depth += (region->length & (4096-1)) ? 1 : 0;
2425                         nespbl->pbl_size = pbl_depth*sizeof(u64);
2426                         if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2427                                 nes_debug(NES_DBG_MR, "Attempting to allocate QP PBL memory");
2428                         } else {
2429                                 nes_debug(NES_DBG_MR, "Attempting to allocate CP PBL memory");
2430                         }
2431
2432                         nes_debug(NES_DBG_MR, " %u bytes, %u entries.\n",
2433                                         nespbl->pbl_size, pbl_depth);
2434                         pbl = pci_alloc_consistent(nesdev->pcidev, nespbl->pbl_size,
2435                                         &nespbl->pbl_pbase);
2436                         if (!pbl) {
2437                                 ib_umem_release(region);
2438                                 kfree(nesmr);
2439                                 kfree(nespbl);
2440                                 nes_debug(NES_DBG_MR, "Unable to allocate PBL memory\n");
2441                                 return ERR_PTR(-ENOMEM);
2442                         }
2443
2444                         nespbl->pbl_vbase = (u64 *)pbl;
2445                         nespbl->user_base = start;
2446                         nes_debug(NES_DBG_MR, "Allocated PBL memory, %u bytes, pbl_pbase=%lx,"
2447                                         " pbl_vbase=%p user_base=0x%lx\n",
2448                                   nespbl->pbl_size, (unsigned long) nespbl->pbl_pbase,
2449                                   (void *) nespbl->pbl_vbase, nespbl->user_base);
2450
2451                         for_each_sg(region->sg_head.sgl, sg, region->nmap, entry) {
2452                                 chunk_pages = sg_dma_len(sg) >> 12;
2453                                 chunk_pages += (sg_dma_len(sg) & (4096-1)) ? 1 : 0;
2454                                 if (first_page) {
2455                                         nespbl->page = sg_page(sg);
2456                                         first_page = 0;
2457                                 }
2458
2459                                 for (page_index = 0; page_index < chunk_pages; page_index++) {
2460                                         ((__le32 *)pbl)[0] = cpu_to_le32((u32)
2461                                                         (sg_dma_address(sg)+
2462                                                         (page_index*4096)));
2463                                         ((__le32 *)pbl)[1] = cpu_to_le32(((u64)
2464                                                         (sg_dma_address(sg)+
2465                                                         (page_index*4096)))>>32);
2466                                         nes_debug(NES_DBG_MR, "pbl=%p, *pbl=0x%016llx, 0x%08x%08x\n", pbl,
2467                                                   (unsigned long long)*pbl,
2468                                                   le32_to_cpu(((__le32 *)pbl)[1]), le32_to_cpu(((__le32 *)pbl)[0]));
2469                                         pbl++;
2470                                 }
2471                         }
2472
2473                         if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2474                                 list_add_tail(&nespbl->list, &nes_ucontext->qp_reg_mem_list);
2475                         } else {
2476                                 list_add_tail(&nespbl->list, &nes_ucontext->cq_reg_mem_list);
2477                         }
2478                         nesmr->ibmr.rkey = -1;
2479                         nesmr->ibmr.lkey = -1;
2480                         nesmr->mode = req.reg_type;
2481                         return &nesmr->ibmr;
2482         }
2483
2484         ib_umem_release(region);
2485         return ERR_PTR(-ENOSYS);
2486 }
2487
2488
2489 /**
2490  * nes_dereg_mr
2491  */
2492 static int nes_dereg_mr(struct ib_mr *ib_mr)
2493 {
2494         struct nes_mr *nesmr = to_nesmr(ib_mr);
2495         struct nes_vnic *nesvnic = to_nesvnic(ib_mr->device);
2496         struct nes_device *nesdev = nesvnic->nesdev;
2497         struct nes_adapter *nesadapter = nesdev->nesadapter;
2498         struct nes_hw_cqp_wqe *cqp_wqe;
2499         struct nes_cqp_request *cqp_request;
2500         unsigned long flags;
2501         int ret;
2502         u16 major_code;
2503         u16 minor_code;
2504
2505
2506         if (nesmr->pages)
2507                 pci_free_consistent(nesdev->pcidev,
2508                                     nesmr->max_pages * sizeof(u64),
2509                                     nesmr->pages,
2510                                     nesmr->paddr);
2511
2512         if (nesmr->region) {
2513                 ib_umem_release(nesmr->region);
2514         }
2515         if (nesmr->mode != IWNES_MEMREG_TYPE_MEM) {
2516                 kfree(nesmr);
2517                 return 0;
2518         }
2519
2520         /* Deallocate the region with the adapter */
2521
2522         cqp_request = nes_get_cqp_request(nesdev);
2523         if (cqp_request == NULL) {
2524                 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
2525                 return -ENOMEM;
2526         }
2527         cqp_request->waiting = 1;
2528         cqp_wqe = &cqp_request->cqp_wqe;
2529
2530         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2531         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2532                         NES_CQP_DEALLOCATE_STAG | NES_CQP_STAG_VA_TO |
2533                         NES_CQP_STAG_DEALLOC_PBLS | NES_CQP_STAG_MR);
2534         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ib_mr->rkey);
2535
2536         atomic_set(&cqp_request->refcount, 2);
2537         nes_post_cqp_request(nesdev, cqp_request);
2538
2539         /* Wait for CQP */
2540         nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X completed\n", ib_mr->rkey);
2541         ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2542                         NES_EVENT_TIMEOUT);
2543         nes_debug(NES_DBG_MR, "Deallocate STag 0x%08X completed, wait_event_timeout ret = %u,"
2544                         " CQP Major:Minor codes = 0x%04X:0x%04X\n",
2545                         ib_mr->rkey, ret, cqp_request->major_code, cqp_request->minor_code);
2546
2547         major_code = cqp_request->major_code;
2548         minor_code = cqp_request->minor_code;
2549
2550         nes_put_cqp_request(nesdev, cqp_request);
2551
2552         if (!ret) {
2553                 nes_debug(NES_DBG_MR, "Timeout waiting to destroy STag,"
2554                                 " ib_mr=%p, rkey = 0x%08X\n",
2555                                 ib_mr, ib_mr->rkey);
2556                 return -ETIME;
2557         } else if (major_code) {
2558                 nes_debug(NES_DBG_MR, "Error (0x%04X:0x%04X) while attempting"
2559                                 " to destroy STag, ib_mr=%p, rkey = 0x%08X\n",
2560                                 major_code, minor_code, ib_mr, ib_mr->rkey);
2561                 return -EIO;
2562         }
2563
2564         if (nesmr->pbls_used != 0) {
2565                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2566                 if (nesmr->pbl_4k) {
2567                         nesadapter->free_4kpbl += nesmr->pbls_used;
2568                         if (nesadapter->free_4kpbl > nesadapter->max_4kpbl)
2569                                 printk(KERN_ERR PFX "free 4KB PBLs(%u) has "
2570                                         "exceeded the max(%u)\n",
2571                                         nesadapter->free_4kpbl,
2572                                         nesadapter->max_4kpbl);
2573                 } else {
2574                         nesadapter->free_256pbl += nesmr->pbls_used;
2575                         if (nesadapter->free_256pbl > nesadapter->max_256pbl)
2576                                 printk(KERN_ERR PFX "free 256B PBLs(%u) has "
2577                                         "exceeded the max(%u)\n",
2578                                         nesadapter->free_256pbl,
2579                                         nesadapter->max_256pbl);
2580                 }
2581                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2582         }
2583         nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2584                         (ib_mr->rkey & 0x0fffff00) >> 8);
2585
2586         kfree(nesmr);
2587
2588         return 0;
2589 }
2590
2591
2592 /**
2593  * show_rev
2594  */
2595 static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
2596                         char *buf)
2597 {
2598         struct nes_ib_device *nesibdev =
2599                         container_of(dev, struct nes_ib_device, ibdev.dev);
2600         struct nes_vnic *nesvnic = nesibdev->nesvnic;
2601
2602         nes_debug(NES_DBG_INIT, "\n");
2603         return sprintf(buf, "%x\n", nesvnic->nesdev->nesadapter->hw_rev);
2604 }
2605
2606
2607 /**
2608  * show_fw_ver
2609  */
2610 static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr,
2611                            char *buf)
2612 {
2613         struct nes_ib_device *nesibdev =
2614                         container_of(dev, struct nes_ib_device, ibdev.dev);
2615         struct nes_vnic *nesvnic = nesibdev->nesvnic;
2616
2617         nes_debug(NES_DBG_INIT, "\n");
2618         return sprintf(buf, "%u.%u\n",
2619                 (nesvnic->nesdev->nesadapter->firmware_version >> 16),
2620                 (nesvnic->nesdev->nesadapter->firmware_version & 0x000000ff));
2621 }
2622
2623
2624 /**
2625  * show_hca
2626  */
2627 static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
2628                         char *buf)
2629 {
2630         nes_debug(NES_DBG_INIT, "\n");
2631         return sprintf(buf, "NES020\n");
2632 }
2633
2634
2635 /**
2636  * show_board
2637  */
2638 static ssize_t show_board(struct device *dev, struct device_attribute *attr,
2639                           char *buf)
2640 {
2641         nes_debug(NES_DBG_INIT, "\n");
2642         return sprintf(buf, "%.*s\n", 32, "NES020 Board ID");
2643 }
2644
2645
2646 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
2647 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
2648 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
2649 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
2650
2651 static struct device_attribute *nes_dev_attributes[] = {
2652         &dev_attr_hw_rev,
2653         &dev_attr_fw_ver,
2654         &dev_attr_hca_type,
2655         &dev_attr_board_id
2656 };
2657
2658
2659 /**
2660  * nes_query_qp
2661  */
2662 static int nes_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2663                 int attr_mask, struct ib_qp_init_attr *init_attr)
2664 {
2665         struct nes_qp *nesqp = to_nesqp(ibqp);
2666
2667         nes_debug(NES_DBG_QP, "\n");
2668
2669         attr->qp_access_flags = 0;
2670         attr->cap.max_send_wr = nesqp->hwqp.sq_size;
2671         attr->cap.max_recv_wr = nesqp->hwqp.rq_size;
2672         attr->cap.max_recv_sge = 1;
2673         if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA)
2674                 attr->cap.max_inline_data = 0;
2675         else
2676                 attr->cap.max_inline_data = 64;
2677
2678         init_attr->event_handler = nesqp->ibqp.event_handler;
2679         init_attr->qp_context = nesqp->ibqp.qp_context;
2680         init_attr->send_cq = nesqp->ibqp.send_cq;
2681         init_attr->recv_cq = nesqp->ibqp.recv_cq;
2682         init_attr->srq = nesqp->ibqp.srq;
2683         init_attr->cap = attr->cap;
2684
2685         return 0;
2686 }
2687
2688
2689 /**
2690  * nes_hw_modify_qp
2691  */
2692 int nes_hw_modify_qp(struct nes_device *nesdev, struct nes_qp *nesqp,
2693                 u32 next_iwarp_state, u32 termlen, u32 wait_completion)
2694 {
2695         struct nes_hw_cqp_wqe *cqp_wqe;
2696         /* struct iw_cm_id *cm_id = nesqp->cm_id; */
2697         /* struct iw_cm_event cm_event; */
2698         struct nes_cqp_request *cqp_request;
2699         int ret;
2700         u16 major_code;
2701
2702         nes_debug(NES_DBG_MOD_QP, "QP%u, refcount=%d\n",
2703                         nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
2704
2705         cqp_request = nes_get_cqp_request(nesdev);
2706         if (cqp_request == NULL) {
2707                 nes_debug(NES_DBG_MOD_QP, "Failed to get a cqp_request.\n");
2708                 return -ENOMEM;
2709         }
2710         if (wait_completion) {
2711                 cqp_request->waiting = 1;
2712         } else {
2713                 cqp_request->waiting = 0;
2714         }
2715         cqp_wqe = &cqp_request->cqp_wqe;
2716
2717         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2718                         NES_CQP_MODIFY_QP | NES_CQP_QP_TYPE_IWARP | next_iwarp_state);
2719         nes_debug(NES_DBG_MOD_QP, "using next_iwarp_state=%08x, wqe_words=%08x\n",
2720                         next_iwarp_state, le32_to_cpu(cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX]));
2721         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2722         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
2723         set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, (u64)nesqp->nesqp_context_pbase);
2724
2725         /* If sending a terminate message, fill in the length (in words) */
2726         if (((next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) == NES_CQP_QP_IWARP_STATE_TERMINATE) &&
2727             !(next_iwarp_state & NES_CQP_QP_TERM_DONT_SEND_TERM_MSG)) {
2728                 termlen = ((termlen + 3) >> 2) << NES_CQP_OP_TERMLEN_SHIFT;
2729                 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_NEW_MSS_IDX, termlen);
2730         }
2731
2732         atomic_set(&cqp_request->refcount, 2);
2733         nes_post_cqp_request(nesdev, cqp_request);
2734
2735         /* Wait for CQP */
2736         if (wait_completion) {
2737                 /* nes_debug(NES_DBG_MOD_QP, "Waiting for modify iWARP QP%u to complete.\n",
2738                                 nesqp->hwqp.qp_id); */
2739                 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2740                                 NES_EVENT_TIMEOUT);
2741                 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u completed, wait_event_timeout ret=%u, "
2742                                 "CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2743                                 nesqp->hwqp.qp_id, ret, cqp_request->major_code, cqp_request->minor_code);
2744                 major_code = cqp_request->major_code;
2745                 if (major_code) {
2746                         nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u failed"
2747                                         "CQP Major:Minor codes = 0x%04X:0x%04X, intended next state = 0x%08X.\n",
2748                                         nesqp->hwqp.qp_id, cqp_request->major_code,
2749                                         cqp_request->minor_code, next_iwarp_state);
2750                 }
2751
2752                 nes_put_cqp_request(nesdev, cqp_request);
2753
2754                 if (!ret)
2755                         return -ETIME;
2756                 else if (major_code)
2757                         return -EIO;
2758                 else
2759                         return 0;
2760         } else {
2761                 return 0;
2762         }
2763 }
2764
2765
2766 /**
2767  * nes_modify_qp
2768  */
2769 int nes_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2770                 int attr_mask, struct ib_udata *udata)
2771 {
2772         struct nes_qp *nesqp = to_nesqp(ibqp);
2773         struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
2774         struct nes_device *nesdev = nesvnic->nesdev;
2775         /* u32 cqp_head; */
2776         /* u32 counter; */
2777         u32 next_iwarp_state = 0;
2778         int err;
2779         unsigned long qplockflags;
2780         int ret;
2781         u16 original_last_aeq;
2782         u8 issue_modify_qp = 0;
2783         u8 dont_wait = 0;
2784
2785         nes_debug(NES_DBG_MOD_QP, "QP%u: QP State=%u, cur QP State=%u,"
2786                         " iwarp_state=0x%X, refcount=%d\n",
2787                         nesqp->hwqp.qp_id, attr->qp_state, nesqp->ibqp_state,
2788                         nesqp->iwarp_state, atomic_read(&nesqp->refcount));
2789
2790         spin_lock_irqsave(&nesqp->lock, qplockflags);
2791
2792         nes_debug(NES_DBG_MOD_QP, "QP%u: hw_iwarp_state=0x%X, hw_tcp_state=0x%X,"
2793                         " QP Access Flags=0x%X, attr_mask = 0x%0x\n",
2794                         nesqp->hwqp.qp_id, nesqp->hw_iwarp_state,
2795                         nesqp->hw_tcp_state, attr->qp_access_flags, attr_mask);
2796
2797         if (attr_mask & IB_QP_STATE) {
2798                 switch (attr->qp_state) {
2799                         case IB_QPS_INIT:
2800                                 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = init\n",
2801                                                 nesqp->hwqp.qp_id);
2802                                 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_IDLE) {
2803                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2804                                         return -EINVAL;
2805                                 }
2806                                 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
2807                                 issue_modify_qp = 1;
2808                                 break;
2809                         case IB_QPS_RTR:
2810                                 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rtr\n",
2811                                                 nesqp->hwqp.qp_id);
2812                                 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_IDLE) {
2813                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2814                                         return -EINVAL;
2815                                 }
2816                                 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
2817                                 issue_modify_qp = 1;
2818                                 break;
2819                         case IB_QPS_RTS:
2820                                 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rts\n",
2821                                                 nesqp->hwqp.qp_id);
2822                                 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_RTS) {
2823                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2824                                         return -EINVAL;
2825                                 }
2826                                 if (nesqp->cm_id == NULL) {
2827                                         nes_debug(NES_DBG_MOD_QP, "QP%u: Failing attempt to move QP to RTS without a CM_ID. \n",
2828                                                         nesqp->hwqp.qp_id );
2829                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2830                                         return -EINVAL;
2831                                 }
2832                                 next_iwarp_state = NES_CQP_QP_IWARP_STATE_RTS;
2833                                 if (nesqp->iwarp_state != NES_CQP_QP_IWARP_STATE_RTS)
2834                                         next_iwarp_state |= NES_CQP_QP_CONTEXT_VALID |
2835                                                         NES_CQP_QP_ARP_VALID | NES_CQP_QP_ORD_VALID;
2836                                 issue_modify_qp = 1;
2837                                 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_ESTABLISHED;
2838                                 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_RTS;
2839                                 nesqp->hte_added = 1;
2840                                 break;
2841                         case IB_QPS_SQD:
2842                                 issue_modify_qp = 1;
2843                                 nes_debug(NES_DBG_MOD_QP, "QP%u: new state=closing. SQ head=%u, SQ tail=%u\n",
2844                                                 nesqp->hwqp.qp_id, nesqp->hwqp.sq_head, nesqp->hwqp.sq_tail);
2845                                 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
2846                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2847                                         return 0;
2848                                 } else {
2849                                         if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
2850                                                 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
2851                                                                 " ignored due to current iWARP state\n",
2852                                                                 nesqp->hwqp.qp_id);
2853                                                 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2854                                                 return -EINVAL;
2855                                         }
2856                                         if (nesqp->hw_iwarp_state != NES_AEQE_IWARP_STATE_RTS) {
2857                                                 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
2858                                                                 " already done based on hw state.\n",
2859                                                                 nesqp->hwqp.qp_id);
2860                                                 issue_modify_qp = 0;
2861                                         }
2862                                         switch (nesqp->hw_iwarp_state) {
2863                                                 case NES_AEQE_IWARP_STATE_CLOSING:
2864                                                         next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
2865                                                         break;
2866                                                 case NES_AEQE_IWARP_STATE_TERMINATE:
2867                                                         next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
2868                                                         break;
2869                                                 case NES_AEQE_IWARP_STATE_ERROR:
2870                                                         next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
2871                                                         break;
2872                                                 default:
2873                                                         next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
2874                                                         nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_CLOSING;
2875                                                         break;
2876                                         }
2877                                 }
2878                                 break;
2879                         case IB_QPS_SQE:
2880                                 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = terminate\n",
2881                                                 nesqp->hwqp.qp_id);
2882                                 if (nesqp->iwarp_state>=(u32)NES_CQP_QP_IWARP_STATE_TERMINATE) {
2883                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2884                                         return -EINVAL;
2885                                 }
2886                                 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
2887                                 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
2888                                 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_TERMINATE;
2889                                 issue_modify_qp = 1;
2890                                 break;
2891                         case IB_QPS_ERR:
2892                         case IB_QPS_RESET:
2893                                 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_ERROR) {
2894                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2895                                         return -EINVAL;
2896                                 }
2897                                 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = error\n",
2898                                                 nesqp->hwqp.qp_id);
2899                                 if (nesqp->term_flags)
2900                                         del_timer(&nesqp->terminate_timer);
2901
2902                                 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
2903                                 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
2904                                         if (nesqp->hte_added) {
2905                                                 nes_debug(NES_DBG_MOD_QP, "set CQP_QP_DEL_HTE\n");
2906                                                 next_iwarp_state |= NES_CQP_QP_DEL_HTE;
2907                                                 nesqp->hte_added = 0;
2908                                         }
2909                                 if ((nesqp->hw_tcp_state > NES_AEQE_TCP_STATE_CLOSED) &&
2910                                                 (nesdev->iw_status) &&
2911                                                 (nesqp->hw_tcp_state != NES_AEQE_TCP_STATE_TIME_WAIT)) {
2912                                         next_iwarp_state |= NES_CQP_QP_RESET;
2913                                 } else {
2914                                         nes_debug(NES_DBG_MOD_QP, "QP%u NOT setting NES_CQP_QP_RESET since TCP state = %u\n",
2915                                                         nesqp->hwqp.qp_id, nesqp->hw_tcp_state);
2916                                         dont_wait = 1;
2917                                 }
2918                                 issue_modify_qp = 1;
2919                                 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_ERROR;
2920                                 break;
2921                         default:
2922                                 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2923                                 return -EINVAL;
2924                                 break;
2925                 }
2926
2927                 nesqp->ibqp_state = attr->qp_state;
2928                 nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
2929                 nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
2930                                 nesqp->iwarp_state);
2931         }
2932
2933         if (attr_mask & IB_QP_ACCESS_FLAGS) {
2934                 if (attr->qp_access_flags & IB_ACCESS_LOCAL_WRITE) {
2935                         nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
2936                                         NES_QPCONTEXT_MISC_RDMA_READ_EN);
2937                         issue_modify_qp = 1;
2938                 }
2939                 if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE) {
2940                         nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN);
2941                         issue_modify_qp = 1;
2942                 }
2943                 if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ) {
2944                         nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_READ_EN);
2945                         issue_modify_qp = 1;
2946                 }
2947                 if (attr->qp_access_flags & IB_ACCESS_MW_BIND) {
2948                         nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_WBIND_EN);
2949                         issue_modify_qp = 1;
2950                 }
2951
2952                 if (nesqp->user_mode) {
2953                         nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
2954                                         NES_QPCONTEXT_MISC_RDMA_READ_EN);
2955                         issue_modify_qp = 1;
2956                 }
2957         }
2958
2959         original_last_aeq = nesqp->last_aeq;
2960         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2961
2962         nes_debug(NES_DBG_MOD_QP, "issue_modify_qp=%u\n", issue_modify_qp);
2963
2964         ret = 0;
2965
2966
2967         if (issue_modify_qp) {
2968                 nes_debug(NES_DBG_MOD_QP, "call nes_hw_modify_qp\n");
2969                 ret = nes_hw_modify_qp(nesdev, nesqp, next_iwarp_state, 0, 1);
2970                 if (ret)
2971                         nes_debug(NES_DBG_MOD_QP, "nes_hw_modify_qp (next_iwarp_state = 0x%08X)"
2972                                         " failed for QP%u.\n",
2973                                         next_iwarp_state, nesqp->hwqp.qp_id);
2974
2975         }
2976
2977         if ((issue_modify_qp) && (nesqp->ibqp_state > IB_QPS_RTS)) {
2978                 nes_debug(NES_DBG_MOD_QP, "QP%u Issued ModifyQP refcount (%d),"
2979                                 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
2980                                 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
2981                                 original_last_aeq, nesqp->last_aeq);
2982                 if (!ret || original_last_aeq != NES_AEQE_AEID_RDMAP_ROE_BAD_LLP_CLOSE) {
2983                         if (dont_wait) {
2984                                 if (nesqp->cm_id && nesqp->hw_tcp_state != 0) {
2985                                         nes_debug(NES_DBG_MOD_QP, "QP%u Queuing fake disconnect for QP refcount (%d),"
2986                                                         " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
2987                                                         nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
2988                                                         original_last_aeq, nesqp->last_aeq);
2989                                         /* this one is for the cm_disconnect thread */
2990                                         spin_lock_irqsave(&nesqp->lock, qplockflags);
2991                                         nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_CLOSED;
2992                                         nesqp->last_aeq = NES_AEQE_AEID_RESET_SENT;
2993                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2994                                         nes_cm_disconn(nesqp);
2995                                 } else {
2996                                         nes_debug(NES_DBG_MOD_QP, "QP%u No fake disconnect, QP refcount=%d\n",
2997                                                         nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
2998                                 }
2999                         } else {
3000                                 spin_lock_irqsave(&nesqp->lock, qplockflags);
3001                                 if (nesqp->cm_id) {
3002                                         /* These two are for the timer thread */
3003                                         if (atomic_inc_return(&nesqp->close_timer_started) == 1) {
3004                                                 nesqp->cm_id->add_ref(nesqp->cm_id);
3005                                                 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3006                                                                 " need ae to finish up, original_last_aeq = 0x%04X."
3007                                                                 " last_aeq = 0x%04X, scheduling timer.\n",
3008                                                                 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3009                                                                 original_last_aeq, nesqp->last_aeq);
3010                                                 schedule_nes_timer(nesqp->cm_node, (struct sk_buff *) nesqp, NES_TIMER_TYPE_CLOSE, 1, 0);
3011                                         }
3012                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3013                                 } else {
3014                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3015                                         nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3016                                                         " need ae to finish up, original_last_aeq = 0x%04X."
3017                                                         " last_aeq = 0x%04X.\n",
3018                                                         nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3019                                                         original_last_aeq, nesqp->last_aeq);
3020                                 }
3021                         }
3022                 } else {
3023                         nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3024                                         " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3025                                         nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3026                                         original_last_aeq, nesqp->last_aeq);
3027                 }
3028         } else {
3029                 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3030                                 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3031                                 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3032                                 original_last_aeq, nesqp->last_aeq);
3033         }
3034
3035         err = 0;
3036
3037         nes_debug(NES_DBG_MOD_QP, "QP%u Leaving, refcount=%d\n",
3038                         nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3039
3040         return err;
3041 }
3042
3043
3044 /**
3045  * nes_muticast_attach
3046  */
3047 static int nes_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3048 {
3049         nes_debug(NES_DBG_INIT, "\n");
3050         return -ENOSYS;
3051 }
3052
3053
3054 /**
3055  * nes_multicast_detach
3056  */
3057 static int nes_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3058 {
3059         nes_debug(NES_DBG_INIT, "\n");
3060         return -ENOSYS;
3061 }
3062
3063
3064 /**
3065  * nes_process_mad
3066  */
3067 static int nes_process_mad(struct ib_device *ibdev, int mad_flags,
3068                 u8 port_num, const struct ib_wc *in_wc, const struct ib_grh *in_grh,
3069                 const struct ib_mad_hdr *in, size_t in_mad_size,
3070                 struct ib_mad_hdr *out, size_t *out_mad_size,
3071                 u16 *out_mad_pkey_index)
3072 {
3073         nes_debug(NES_DBG_INIT, "\n");
3074         return -ENOSYS;
3075 }
3076
3077 static inline void
3078 fill_wqe_sg_send(struct nes_hw_qp_wqe *wqe, struct ib_send_wr *ib_wr, u32 uselkey)
3079 {
3080         int sge_index;
3081         int total_payload_length = 0;
3082         for (sge_index = 0; sge_index < ib_wr->num_sge; sge_index++) {
3083                 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3084                         ib_wr->sg_list[sge_index].addr);
3085                 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_LENGTH0_IDX + (sge_index*4),
3086                         ib_wr->sg_list[sge_index].length);
3087                 if (uselkey)
3088                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4),
3089                                                 (ib_wr->sg_list[sge_index].lkey));
3090                 else
3091                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4), 0);
3092
3093                 total_payload_length += ib_wr->sg_list[sge_index].length;
3094         }
3095         nes_debug(NES_DBG_IW_TX, "UC UC UC, sending total_payload_length=%u \n",
3096                         total_payload_length);
3097         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3098                                 total_payload_length);
3099 }
3100
3101 /**
3102  * nes_post_send
3103  */
3104 static int nes_post_send(struct ib_qp *ibqp, struct ib_send_wr *ib_wr,
3105                 struct ib_send_wr **bad_wr)
3106 {
3107         u64 u64temp;
3108         unsigned long flags = 0;
3109         struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3110         struct nes_device *nesdev = nesvnic->nesdev;
3111         struct nes_qp *nesqp = to_nesqp(ibqp);
3112         struct nes_hw_qp_wqe *wqe;
3113         int err = 0;
3114         u32 qsize = nesqp->hwqp.sq_size;
3115         u32 head;
3116         u32 wqe_misc = 0;
3117         u32 wqe_count = 0;
3118         u32 counter;
3119
3120         if (nesqp->ibqp_state > IB_QPS_RTS) {
3121                 err = -EINVAL;
3122                 goto out;
3123         }
3124
3125         spin_lock_irqsave(&nesqp->lock, flags);
3126
3127         head = nesqp->hwqp.sq_head;
3128
3129         while (ib_wr) {
3130                 /* Check for QP error */
3131                 if (nesqp->term_flags) {
3132                         err = -EINVAL;
3133                         break;
3134                 }
3135
3136                 /* Check for SQ overflow */
3137                 if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
3138                         err = -ENOMEM;
3139                         break;
3140                 }
3141
3142                 wqe = &nesqp->hwqp.sq_vbase[head];
3143                 /* nes_debug(NES_DBG_IW_TX, "processing sq wqe for QP%u at %p, head = %u.\n",
3144                                 nesqp->hwqp.qp_id, wqe, head); */
3145                 nes_fill_init_qp_wqe(wqe, nesqp, head);
3146                 u64temp = (u64)(ib_wr->wr_id);
3147                 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3148                                         u64temp);
3149                 switch (ib_wr->opcode) {
3150                 case IB_WR_SEND:
3151                 case IB_WR_SEND_WITH_INV:
3152                         if (IB_WR_SEND == ib_wr->opcode) {
3153                                 if (ib_wr->send_flags & IB_SEND_SOLICITED)
3154                                         wqe_misc = NES_IWARP_SQ_OP_SENDSE;
3155                                 else
3156                                         wqe_misc = NES_IWARP_SQ_OP_SEND;
3157                         } else {
3158                                 if (ib_wr->send_flags & IB_SEND_SOLICITED)
3159                                         wqe_misc = NES_IWARP_SQ_OP_SENDSEINV;
3160                                 else
3161                                         wqe_misc = NES_IWARP_SQ_OP_SENDINV;
3162
3163                                 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_INV_STAG_LOW_IDX,
3164                                                     ib_wr->ex.invalidate_rkey);
3165                         }
3166
3167                         if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3168                                 err = -EINVAL;
3169                                 break;
3170                         }
3171
3172                         if (ib_wr->send_flags & IB_SEND_FENCE)
3173                                 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3174
3175                         if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3176                             ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3177                              (ib_wr->sg_list[0].length <= 64)) {
3178                                 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3179                                        (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3180                                 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3181                                                     ib_wr->sg_list[0].length);
3182                                 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3183                         } else {
3184                                 fill_wqe_sg_send(wqe, ib_wr, 1);
3185                         }
3186
3187                         break;
3188                 case IB_WR_RDMA_WRITE:
3189                         wqe_misc = NES_IWARP_SQ_OP_RDMAW;
3190                         if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3191                                 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=%u\n",
3192                                           ib_wr->num_sge, nesdev->nesadapter->max_sge);
3193                                 err = -EINVAL;
3194                                 break;
3195                         }
3196
3197                         if (ib_wr->send_flags & IB_SEND_FENCE)
3198                                 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3199
3200                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3201                                             rdma_wr(ib_wr)->rkey);
3202                         set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3203                                             rdma_wr(ib_wr)->remote_addr);
3204
3205                         if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3206                             ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3207                              (ib_wr->sg_list[0].length <= 64)) {
3208                                 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3209                                        (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3210                                 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3211                                                     ib_wr->sg_list[0].length);
3212                                 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3213                         } else {
3214                                 fill_wqe_sg_send(wqe, ib_wr, 1);
3215                         }
3216
3217                         wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX] =
3218                                 wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX];
3219                         break;
3220                 case IB_WR_RDMA_READ:
3221                 case IB_WR_RDMA_READ_WITH_INV:
3222                         /* iWARP only supports 1 sge for RDMA reads */
3223                         if (ib_wr->num_sge > 1) {
3224                                 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=1\n",
3225                                           ib_wr->num_sge);
3226                                 err = -EINVAL;
3227                                 break;
3228                         }
3229                         if (ib_wr->opcode == IB_WR_RDMA_READ) {
3230                                 wqe_misc = NES_IWARP_SQ_OP_RDMAR;
3231                         } else {
3232                                 wqe_misc = NES_IWARP_SQ_OP_RDMAR_LOCINV;
3233                                 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_INV_STAG_LOW_IDX,
3234                                                     ib_wr->ex.invalidate_rkey);
3235                         }
3236
3237                         set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3238                                             rdma_wr(ib_wr)->remote_addr);
3239                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3240                                             rdma_wr(ib_wr)->rkey);
3241                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX,
3242                                             ib_wr->sg_list->length);
3243                         set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX,
3244                                             ib_wr->sg_list->addr);
3245                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX,
3246                                             ib_wr->sg_list->lkey);
3247                         break;
3248                 case IB_WR_LOCAL_INV:
3249                         wqe_misc = NES_IWARP_SQ_OP_LOCINV;
3250                         set_wqe_32bit_value(wqe->wqe_words,
3251                                             NES_IWARP_SQ_LOCINV_WQE_INV_STAG_IDX,
3252                                             ib_wr->ex.invalidate_rkey);
3253                         break;
3254                 case IB_WR_REG_MR:
3255                 {
3256                         struct nes_mr *mr = to_nesmr(reg_wr(ib_wr)->mr);
3257                         int page_shift = ilog2(reg_wr(ib_wr)->mr->page_size);
3258                         int flags = reg_wr(ib_wr)->access;
3259
3260                         if (mr->npages > (NES_4K_PBL_CHUNK_SIZE / sizeof(u64))) {
3261                                 nes_debug(NES_DBG_IW_TX, "SQ_FMR: bad page_list_len\n");
3262                                 err = -EINVAL;
3263                                 break;
3264                         }
3265                         wqe_misc = NES_IWARP_SQ_OP_FAST_REG;
3266                         set_wqe_64bit_value(wqe->wqe_words,
3267                                             NES_IWARP_SQ_FMR_WQE_VA_FBO_LOW_IDX,
3268                                             mr->ibmr.iova);
3269                         set_wqe_32bit_value(wqe->wqe_words,
3270                                             NES_IWARP_SQ_FMR_WQE_LENGTH_LOW_IDX,
3271                                             mr->ibmr.length);
3272                         set_wqe_32bit_value(wqe->wqe_words,
3273                                             NES_IWARP_SQ_FMR_WQE_LENGTH_HIGH_IDX, 0);
3274                         set_wqe_32bit_value(wqe->wqe_words,
3275                                             NES_IWARP_SQ_FMR_WQE_MR_STAG_IDX,
3276                                             reg_wr(ib_wr)->key);
3277
3278                         if (page_shift == 12) {
3279                                 wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_4K;
3280                         } else if (page_shift == 21) {
3281                                 wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_2M;
3282                         } else {
3283                                 nes_debug(NES_DBG_IW_TX, "Invalid page shift,"
3284                                           " ib_wr=%u, max=1\n", ib_wr->num_sge);
3285                                 err = -EINVAL;
3286                                 break;
3287                         }
3288
3289                         /* Set access_flags */
3290                         wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_READ;
3291                         if (flags & IB_ACCESS_LOCAL_WRITE)
3292                                 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_WRITE;
3293
3294                         if (flags & IB_ACCESS_REMOTE_WRITE)
3295                                 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_WRITE;
3296
3297                         if (flags & IB_ACCESS_REMOTE_READ)
3298                                 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_READ;
3299
3300                         if (flags & IB_ACCESS_MW_BIND)
3301                                 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_WINDOW_BIND;
3302
3303                         /* Fill in PBL info: */
3304                         set_wqe_64bit_value(wqe->wqe_words,
3305                                             NES_IWARP_SQ_FMR_WQE_PBL_ADDR_LOW_IDX,
3306                                             mr->paddr);
3307
3308                         set_wqe_32bit_value(wqe->wqe_words,
3309                                             NES_IWARP_SQ_FMR_WQE_PBL_LENGTH_IDX,
3310                                             mr->npages * 8);
3311
3312                         nes_debug(NES_DBG_IW_TX, "SQ_REG_MR: iova_start: %llx, "
3313                                   "length: %d, rkey: %0x, pgl_paddr: %llx, "
3314                                   "page_list_len: %u, wqe_misc: %x\n",
3315                                   (unsigned long long) mr->ibmr.iova,
3316                                   mr->ibmr.length,
3317                                   reg_wr(ib_wr)->key,
3318                                   (unsigned long long) mr->paddr,
3319                                   mr->npages,
3320                                   wqe_misc);
3321                         break;
3322                 }
3323                 default:
3324                         /* error */
3325                         err = -EINVAL;
3326                         break;
3327                 }
3328
3329                 if (err)
3330                         break;
3331
3332                 if ((ib_wr->send_flags & IB_SEND_SIGNALED) || nesqp->sig_all)
3333                         wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
3334
3335                 wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = cpu_to_le32(wqe_misc);
3336
3337                 ib_wr = ib_wr->next;
3338                 head++;
3339                 wqe_count++;
3340                 if (head >= qsize)
3341                         head = 0;
3342
3343         }
3344
3345         nesqp->hwqp.sq_head = head;
3346         barrier();
3347         while (wqe_count) {
3348                 counter = min(wqe_count, ((u32)255));
3349                 wqe_count -= counter;
3350                 nes_write32(nesdev->regs + NES_WQE_ALLOC,
3351                                 (counter << 24) | 0x00800000 | nesqp->hwqp.qp_id);
3352         }
3353
3354         spin_unlock_irqrestore(&nesqp->lock, flags);
3355
3356 out:
3357         if (err)
3358                 *bad_wr = ib_wr;
3359         return err;
3360 }
3361
3362
3363 /**
3364  * nes_post_recv
3365  */
3366 static int nes_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *ib_wr,
3367                 struct ib_recv_wr **bad_wr)
3368 {
3369         u64 u64temp;
3370         unsigned long flags = 0;
3371         struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3372         struct nes_device *nesdev = nesvnic->nesdev;
3373         struct nes_qp *nesqp = to_nesqp(ibqp);
3374         struct nes_hw_qp_wqe *wqe;
3375         int err = 0;
3376         int sge_index;
3377         u32 qsize = nesqp->hwqp.rq_size;
3378         u32 head;
3379         u32 wqe_count = 0;
3380         u32 counter;
3381         u32 total_payload_length;
3382
3383         if (nesqp->ibqp_state > IB_QPS_RTS) {
3384                 err = -EINVAL;
3385                 goto out;
3386         }
3387
3388         spin_lock_irqsave(&nesqp->lock, flags);
3389
3390         head = nesqp->hwqp.rq_head;
3391
3392         while (ib_wr) {
3393                 /* Check for QP error */
3394                 if (nesqp->term_flags) {
3395                         err = -EINVAL;
3396                         break;
3397                 }
3398
3399                 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3400                         err = -EINVAL;
3401                         break;
3402                 }
3403                 /* Check for RQ overflow */
3404                 if (((head + (2 * qsize) - nesqp->hwqp.rq_tail) % qsize) == (qsize - 1)) {
3405                         err = -ENOMEM;
3406                         break;
3407                 }
3408
3409                 nes_debug(NES_DBG_IW_RX, "ibwr sge count = %u.\n", ib_wr->num_sge);
3410                 wqe = &nesqp->hwqp.rq_vbase[head];
3411
3412                 /* nes_debug(NES_DBG_IW_RX, "QP%u:processing rq wqe at %p, head = %u.\n",
3413                                 nesqp->hwqp.qp_id, wqe, head); */
3414                 nes_fill_init_qp_wqe(wqe, nesqp, head);
3415                 u64temp = (u64)(ib_wr->wr_id);
3416                 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3417                                         u64temp);
3418                 total_payload_length = 0;
3419                 for (sge_index=0; sge_index < ib_wr->num_sge; sge_index++) {
3420                         set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3421                                         ib_wr->sg_list[sge_index].addr);
3422                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_LENGTH0_IDX+(sge_index*4),
3423                                         ib_wr->sg_list[sge_index].length);
3424                         set_wqe_32bit_value(wqe->wqe_words,NES_IWARP_RQ_WQE_STAG0_IDX+(sge_index*4),
3425                                         ib_wr->sg_list[sge_index].lkey);
3426
3427                         total_payload_length += ib_wr->sg_list[sge_index].length;
3428                 }
3429                 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_TOTAL_PAYLOAD_IDX,
3430                                         total_payload_length);
3431
3432                 ib_wr = ib_wr->next;
3433                 head++;
3434                 wqe_count++;
3435                 if (head >= qsize)
3436                         head = 0;
3437         }
3438
3439         nesqp->hwqp.rq_head = head;
3440         barrier();
3441         while (wqe_count) {
3442                 counter = min(wqe_count, ((u32)255));
3443                 wqe_count -= counter;
3444                 nes_write32(nesdev->regs+NES_WQE_ALLOC, (counter<<24) | nesqp->hwqp.qp_id);
3445         }
3446
3447         spin_unlock_irqrestore(&nesqp->lock, flags);
3448
3449 out:
3450         if (err)
3451                 *bad_wr = ib_wr;
3452         return err;
3453 }
3454
3455
3456 /**
3457  * nes_poll_cq
3458  */
3459 static int nes_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry)
3460 {
3461         u64 u64temp;
3462         u64 wrid;
3463         unsigned long flags = 0;
3464         struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3465         struct nes_device *nesdev = nesvnic->nesdev;
3466         struct nes_cq *nescq = to_nescq(ibcq);
3467         struct nes_qp *nesqp;
3468         struct nes_hw_cqe cqe;
3469         u32 head;
3470         u32 wq_tail = 0;
3471         u32 cq_size;
3472         u32 cqe_count = 0;
3473         u32 wqe_index;
3474         u32 u32temp;
3475         u32 move_cq_head = 1;
3476         u32 err_code;
3477
3478         nes_debug(NES_DBG_CQ, "\n");
3479
3480         spin_lock_irqsave(&nescq->lock, flags);
3481
3482         head = nescq->hw_cq.cq_head;
3483         cq_size = nescq->hw_cq.cq_size;
3484
3485         while (cqe_count < num_entries) {
3486                 if ((le32_to_cpu(nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX]) &
3487                                 NES_CQE_VALID) == 0)
3488                         break;
3489
3490                 /*
3491                  * Make sure we read CQ entry contents *after*
3492                  * we've checked the valid bit.
3493                  */
3494                 rmb();
3495
3496                 cqe = nescq->hw_cq.cq_vbase[head];
3497                 u32temp = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3498                 wqe_index = u32temp & (nesdev->nesadapter->max_qp_wr - 1);
3499                 u32temp &= ~(NES_SW_CONTEXT_ALIGN-1);
3500                 /* parse CQE, get completion context from WQE (either rq or sq) */
3501                 u64temp = (((u64)(le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX])))<<32) |
3502                                 ((u64)u32temp);
3503
3504                 if (u64temp) {
3505                         nesqp = (struct nes_qp *)(unsigned long)u64temp;
3506                         memset(entry, 0, sizeof *entry);
3507                         if (cqe.cqe_words[NES_CQE_ERROR_CODE_IDX] == 0) {
3508                                 entry->status = IB_WC_SUCCESS;
3509                         } else {
3510                                 err_code = le32_to_cpu(cqe.cqe_words[NES_CQE_ERROR_CODE_IDX]);
3511                                 if (NES_IWARP_CQE_MAJOR_DRV == (err_code >> 16)) {
3512                                         entry->status = err_code & 0x0000ffff;
3513
3514                                         /* The rest of the cqe's will be marked as flushed */
3515                                         nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_ERROR_CODE_IDX] =
3516                                                 cpu_to_le32((NES_IWARP_CQE_MAJOR_FLUSH << 16) |
3517                                                             NES_IWARP_CQE_MINOR_FLUSH);
3518                                 } else
3519                                         entry->status = IB_WC_WR_FLUSH_ERR;
3520                         }
3521
3522                         entry->qp = &nesqp->ibqp;
3523                         entry->src_qp = nesqp->hwqp.qp_id;
3524
3525                         if (le32_to_cpu(cqe.cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_SQ) {
3526                                 if (nesqp->skip_lsmm) {
3527                                         nesqp->skip_lsmm = 0;
3528                                         nesqp->hwqp.sq_tail++;
3529                                 }
3530
3531                                 /* Working on a SQ Completion*/
3532                                 wrid = (((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wqe_index].
3533                                                 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_HIGH_IDX]))) << 32) |
3534                                                 ((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wqe_index].
3535                                                 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX])));
3536                                 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3537                                                 wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX]);
3538
3539                                 switch (le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3540                                                 wqe_words[NES_IWARP_SQ_WQE_MISC_IDX]) & 0x3f) {
3541                                         case NES_IWARP_SQ_OP_RDMAW:
3542                                                 nes_debug(NES_DBG_CQ, "Operation = RDMA WRITE.\n");
3543                                                 entry->opcode = IB_WC_RDMA_WRITE;
3544                                                 break;
3545                                         case NES_IWARP_SQ_OP_RDMAR:
3546                                                 nes_debug(NES_DBG_CQ, "Operation = RDMA READ.\n");
3547                                                 entry->opcode = IB_WC_RDMA_READ;
3548                                                 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3549                                                                 wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX]);
3550                                                 break;
3551                                         case NES_IWARP_SQ_OP_SENDINV:
3552                                         case NES_IWARP_SQ_OP_SENDSEINV:
3553                                         case NES_IWARP_SQ_OP_SEND:
3554                                         case NES_IWARP_SQ_OP_SENDSE:
3555                                                 nes_debug(NES_DBG_CQ, "Operation = Send.\n");
3556                                                 entry->opcode = IB_WC_SEND;
3557                                                 break;
3558                                         case NES_IWARP_SQ_OP_LOCINV:
3559                                                 entry->opcode = IB_WC_LOCAL_INV;
3560                                                 break;
3561                                         case NES_IWARP_SQ_OP_FAST_REG:
3562                                                 entry->opcode = IB_WC_REG_MR;
3563                                                 break;
3564                                 }
3565
3566                                 nesqp->hwqp.sq_tail = (wqe_index+1)&(nesqp->hwqp.sq_size - 1);
3567                                 if ((entry->status != IB_WC_SUCCESS) && (nesqp->hwqp.sq_tail != nesqp->hwqp.sq_head)) {
3568                                         move_cq_head = 0;
3569                                         wq_tail = nesqp->hwqp.sq_tail;
3570                                 }
3571                         } else {
3572                                 /* Working on a RQ Completion*/
3573                                 entry->byte_len = le32_to_cpu(cqe.cqe_words[NES_CQE_PAYLOAD_LENGTH_IDX]);
3574                                 wrid = ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wqe_index].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_LOW_IDX]))) |
3575                                         ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wqe_index].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_HIGH_IDX]))<<32);
3576                                         entry->opcode = IB_WC_RECV;
3577
3578                                 nesqp->hwqp.rq_tail = (wqe_index+1)&(nesqp->hwqp.rq_size - 1);
3579                                 if ((entry->status != IB_WC_SUCCESS) && (nesqp->hwqp.rq_tail != nesqp->hwqp.rq_head)) {
3580                                         move_cq_head = 0;
3581                                         wq_tail = nesqp->hwqp.rq_tail;
3582                                 }
3583                         }
3584
3585                         entry->wr_id = wrid;
3586                         entry++;
3587                         cqe_count++;
3588                 }
3589
3590                 if (move_cq_head) {
3591                         nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX] = 0;
3592                         if (++head >= cq_size)
3593                                 head = 0;
3594                         nescq->polled_completions++;
3595
3596                         if ((nescq->polled_completions > (cq_size / 2)) ||
3597                                         (nescq->polled_completions == 255)) {
3598                                 nes_debug(NES_DBG_CQ, "CQ%u Issuing CQE Allocate since more than half of cqes"
3599                                         " are pending %u of %u.\n",
3600                                         nescq->hw_cq.cq_number, nescq->polled_completions, cq_size);
3601                                 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3602                                         nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3603                                 nescq->polled_completions = 0;
3604                         }
3605                 } else {
3606                         /* Update the wqe index and set status to flush */
3607                         wqe_index = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3608                         wqe_index = (wqe_index & (~(nesdev->nesadapter->max_qp_wr - 1))) | wq_tail;
3609                         nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX] =
3610                                 cpu_to_le32(wqe_index);
3611                         move_cq_head = 1; /* ready for next pass */
3612                 }
3613         }
3614
3615         if (nescq->polled_completions) {
3616                 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3617                                 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3618                 nescq->polled_completions = 0;
3619         }
3620
3621         nescq->hw_cq.cq_head = head;
3622         nes_debug(NES_DBG_CQ, "Reporting %u completions for CQ%u.\n",
3623                         cqe_count, nescq->hw_cq.cq_number);
3624
3625         spin_unlock_irqrestore(&nescq->lock, flags);
3626
3627         return cqe_count;
3628 }
3629
3630
3631 /**
3632  * nes_req_notify_cq
3633  */
3634 static int nes_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags notify_flags)
3635                 {
3636         struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3637         struct nes_device *nesdev = nesvnic->nesdev;
3638         struct nes_cq *nescq = to_nescq(ibcq);
3639         u32 cq_arm;
3640
3641         nes_debug(NES_DBG_CQ, "Requesting notification for CQ%u.\n",
3642                         nescq->hw_cq.cq_number);
3643
3644         cq_arm = nescq->hw_cq.cq_number;
3645         if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_NEXT_COMP)
3646                 cq_arm |= NES_CQE_ALLOC_NOTIFY_NEXT;
3647         else if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
3648                 cq_arm |= NES_CQE_ALLOC_NOTIFY_SE;
3649         else
3650                 return -EINVAL;
3651
3652         nes_write32(nesdev->regs+NES_CQE_ALLOC, cq_arm);
3653         nes_read32(nesdev->regs+NES_CQE_ALLOC);
3654
3655         return 0;
3656 }
3657
3658 static int nes_port_immutable(struct ib_device *ibdev, u8 port_num,
3659                               struct ib_port_immutable *immutable)
3660 {
3661         struct ib_port_attr attr;
3662         int err;
3663
3664         err = nes_query_port(ibdev, port_num, &attr);
3665         if (err)
3666                 return err;
3667
3668         immutable->pkey_tbl_len = attr.pkey_tbl_len;
3669         immutable->gid_tbl_len = attr.gid_tbl_len;
3670         immutable->core_cap_flags = RDMA_CORE_PORT_IWARP;
3671
3672         return 0;
3673 }
3674
3675 /**
3676  * nes_init_ofa_device
3677  */
3678 struct nes_ib_device *nes_init_ofa_device(struct net_device *netdev)
3679 {
3680         struct nes_ib_device *nesibdev;
3681         struct nes_vnic *nesvnic = netdev_priv(netdev);
3682         struct nes_device *nesdev = nesvnic->nesdev;
3683
3684         nesibdev = (struct nes_ib_device *)ib_alloc_device(sizeof(struct nes_ib_device));
3685         if (nesibdev == NULL) {
3686                 return NULL;
3687         }
3688         strlcpy(nesibdev->ibdev.name, "nes%d", IB_DEVICE_NAME_MAX);
3689         nesibdev->ibdev.owner = THIS_MODULE;
3690
3691         nesibdev->ibdev.node_type = RDMA_NODE_RNIC;
3692         memset(&nesibdev->ibdev.node_guid, 0, sizeof(nesibdev->ibdev.node_guid));
3693         memcpy(&nesibdev->ibdev.node_guid, netdev->dev_addr, 6);
3694
3695         nesibdev->ibdev.uverbs_cmd_mask =
3696                         (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
3697                         (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
3698                         (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
3699                         (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
3700                         (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
3701                         (1ull << IB_USER_VERBS_CMD_REG_MR) |
3702                         (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
3703                         (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
3704                         (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
3705                         (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
3706                         (1ull << IB_USER_VERBS_CMD_CREATE_AH) |
3707                         (1ull << IB_USER_VERBS_CMD_DESTROY_AH) |
3708                         (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
3709                         (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
3710                         (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
3711                         (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
3712                         (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
3713                         (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
3714                         (1ull << IB_USER_VERBS_CMD_BIND_MW) |
3715                         (1ull << IB_USER_VERBS_CMD_DEALLOC_MW) |
3716                         (1ull << IB_USER_VERBS_CMD_POST_RECV) |
3717                         (1ull << IB_USER_VERBS_CMD_POST_SEND);
3718
3719         nesibdev->ibdev.phys_port_cnt = 1;
3720         nesibdev->ibdev.num_comp_vectors = 1;
3721         nesibdev->ibdev.dma_device = &nesdev->pcidev->dev;
3722         nesibdev->ibdev.dev.parent = &nesdev->pcidev->dev;
3723         nesibdev->ibdev.query_device = nes_query_device;
3724         nesibdev->ibdev.query_port = nes_query_port;
3725         nesibdev->ibdev.query_pkey = nes_query_pkey;
3726         nesibdev->ibdev.query_gid = nes_query_gid;
3727         nesibdev->ibdev.alloc_ucontext = nes_alloc_ucontext;
3728         nesibdev->ibdev.dealloc_ucontext = nes_dealloc_ucontext;
3729         nesibdev->ibdev.mmap = nes_mmap;
3730         nesibdev->ibdev.alloc_pd = nes_alloc_pd;
3731         nesibdev->ibdev.dealloc_pd = nes_dealloc_pd;
3732         nesibdev->ibdev.create_ah = nes_create_ah;
3733         nesibdev->ibdev.destroy_ah = nes_destroy_ah;
3734         nesibdev->ibdev.create_qp = nes_create_qp;
3735         nesibdev->ibdev.modify_qp = nes_modify_qp;
3736         nesibdev->ibdev.query_qp = nes_query_qp;
3737         nesibdev->ibdev.destroy_qp = nes_destroy_qp;
3738         nesibdev->ibdev.create_cq = nes_create_cq;
3739         nesibdev->ibdev.destroy_cq = nes_destroy_cq;
3740         nesibdev->ibdev.poll_cq = nes_poll_cq;
3741         nesibdev->ibdev.get_dma_mr = nes_get_dma_mr;
3742         nesibdev->ibdev.reg_user_mr = nes_reg_user_mr;
3743         nesibdev->ibdev.dereg_mr = nes_dereg_mr;
3744         nesibdev->ibdev.alloc_mw = nes_alloc_mw;
3745         nesibdev->ibdev.dealloc_mw = nes_dealloc_mw;
3746
3747         nesibdev->ibdev.alloc_mr = nes_alloc_mr;
3748         nesibdev->ibdev.map_mr_sg = nes_map_mr_sg;
3749
3750         nesibdev->ibdev.attach_mcast = nes_multicast_attach;
3751         nesibdev->ibdev.detach_mcast = nes_multicast_detach;
3752         nesibdev->ibdev.process_mad = nes_process_mad;
3753
3754         nesibdev->ibdev.req_notify_cq = nes_req_notify_cq;
3755         nesibdev->ibdev.post_send = nes_post_send;
3756         nesibdev->ibdev.post_recv = nes_post_recv;
3757
3758         nesibdev->ibdev.iwcm = kzalloc(sizeof(*nesibdev->ibdev.iwcm), GFP_KERNEL);
3759         if (nesibdev->ibdev.iwcm == NULL) {
3760                 ib_dealloc_device(&nesibdev->ibdev);
3761                 return NULL;
3762         }
3763         nesibdev->ibdev.iwcm->add_ref = nes_add_ref;
3764         nesibdev->ibdev.iwcm->rem_ref = nes_rem_ref;
3765         nesibdev->ibdev.iwcm->get_qp = nes_get_qp;
3766         nesibdev->ibdev.iwcm->connect = nes_connect;
3767         nesibdev->ibdev.iwcm->accept = nes_accept;
3768         nesibdev->ibdev.iwcm->reject = nes_reject;
3769         nesibdev->ibdev.iwcm->create_listen = nes_create_listen;
3770         nesibdev->ibdev.iwcm->destroy_listen = nes_destroy_listen;
3771         nesibdev->ibdev.get_port_immutable   = nes_port_immutable;
3772         memcpy(nesibdev->ibdev.iwcm->ifname, netdev->name,
3773                sizeof(nesibdev->ibdev.iwcm->ifname));
3774
3775         return nesibdev;
3776 }
3777
3778
3779 /**
3780  * nes_handle_delayed_event
3781  */
3782 static void nes_handle_delayed_event(unsigned long data)
3783 {
3784         struct nes_vnic *nesvnic = (void *) data;
3785
3786         if (nesvnic->delayed_event != nesvnic->last_dispatched_event) {
3787                 struct ib_event event;
3788
3789                 event.device = &nesvnic->nesibdev->ibdev;
3790                 if (!event.device)
3791                         goto stop_timer;
3792                 event.event = nesvnic->delayed_event;
3793                 event.element.port_num = nesvnic->logical_port + 1;
3794                 ib_dispatch_event(&event);
3795         }
3796
3797 stop_timer:
3798         nesvnic->event_timer.function = NULL;
3799 }
3800
3801
3802 void  nes_port_ibevent(struct nes_vnic *nesvnic)
3803 {
3804         struct nes_ib_device *nesibdev = nesvnic->nesibdev;
3805         struct nes_device *nesdev = nesvnic->nesdev;
3806         struct ib_event event;
3807         event.device = &nesibdev->ibdev;
3808         event.element.port_num = nesvnic->logical_port + 1;
3809         event.event = nesdev->iw_status ? IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
3810
3811         if (!nesvnic->event_timer.function) {
3812                 ib_dispatch_event(&event);
3813                 nesvnic->last_dispatched_event = event.event;
3814                 nesvnic->event_timer.function = nes_handle_delayed_event;
3815                 nesvnic->event_timer.data = (unsigned long) nesvnic;
3816                 nesvnic->event_timer.expires = jiffies + NES_EVENT_DELAY;
3817                 add_timer(&nesvnic->event_timer);
3818         } else {
3819                 mod_timer(&nesvnic->event_timer, jiffies + NES_EVENT_DELAY);
3820         }
3821         nesvnic->delayed_event = event.event;
3822 }
3823
3824
3825 /**
3826  * nes_destroy_ofa_device
3827  */
3828 void nes_destroy_ofa_device(struct nes_ib_device *nesibdev)
3829 {
3830         if (nesibdev == NULL)
3831                 return;
3832
3833         nes_unregister_ofa_device(nesibdev);
3834
3835         kfree(nesibdev->ibdev.iwcm);
3836         ib_dealloc_device(&nesibdev->ibdev);
3837 }
3838
3839
3840 /**
3841  * nes_register_ofa_device
3842  */
3843 int nes_register_ofa_device(struct nes_ib_device *nesibdev)
3844 {
3845         struct nes_vnic *nesvnic = nesibdev->nesvnic;
3846         struct nes_device *nesdev = nesvnic->nesdev;
3847         struct nes_adapter *nesadapter = nesdev->nesadapter;
3848         int i, ret;
3849
3850         ret = ib_register_device(&nesvnic->nesibdev->ibdev, NULL);
3851         if (ret) {
3852                 return ret;
3853         }
3854
3855         /* Get the resources allocated to this device */
3856         nesibdev->max_cq = (nesadapter->max_cq-NES_FIRST_QPN) / nesadapter->port_count;
3857         nesibdev->max_mr = nesadapter->max_mr / nesadapter->port_count;
3858         nesibdev->max_qp = (nesadapter->max_qp-NES_FIRST_QPN) / nesadapter->port_count;
3859         nesibdev->max_pd = nesadapter->max_pd / nesadapter->port_count;
3860
3861         for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
3862                 ret = device_create_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
3863                 if (ret) {
3864                         while (i > 0) {
3865                                 i--;
3866                                 device_remove_file(&nesibdev->ibdev.dev,
3867                                                    nes_dev_attributes[i]);
3868                         }
3869                         ib_unregister_device(&nesibdev->ibdev);
3870                         return ret;
3871                 }
3872         }
3873
3874         nesvnic->of_device_registered = 1;
3875
3876         return 0;
3877 }
3878
3879
3880 /**
3881  * nes_unregister_ofa_device
3882  */
3883 static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev)
3884 {
3885         struct nes_vnic *nesvnic = nesibdev->nesvnic;
3886         int i;
3887
3888         for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
3889                 device_remove_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
3890         }
3891
3892         if (nesvnic->of_device_registered) {
3893                 ib_unregister_device(&nesibdev->ibdev);
3894         }
3895
3896         nesvnic->of_device_registered = 0;
3897 }