drivers/infiniband/hw/nes/nes_verbs.c

   1 /*
   2  * Copyright (c) 2006 - 2009 Intel-NE, Inc.  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 <asm/byteorder.h>
  39
  40 #include <rdma/ib_verbs.h>
  41 #include <rdma/iw_cm.h>
  42 #include <rdma/ib_user_verbs.h>
  43
  44 #include "nes.h"
  45
  46 #include <rdma/ib_umem.h>
  47
  48 atomic_t mod_qp_timouts;
  49 atomic_t qps_created;
  50 atomic_t sw_qps_destroyed;
  51
  52 static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev);
  53
  54 /**
  55  * nes_alloc_mw
  56  */
  57 static struct ib_mw *nes_alloc_mw(struct ib_pd *ibpd) {
  58         struct nes_pd *nespd = to_nespd(ibpd);
  59         struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
  60         struct nes_device *nesdev = nesvnic->nesdev;
  61         struct nes_adapter *nesadapter = nesdev->nesadapter;
  62         struct nes_cqp_request *cqp_request;
  63         struct nes_mr *nesmr;
  64         struct ib_mw *ibmw;
  65         struct nes_hw_cqp_wqe *cqp_wqe;
  66         int ret;
  67         u32 stag;
  68         u32 stag_index = 0;
  69         u32 next_stag_index = 0;
  70         u32 driver_key = 0;
  71         u8 stag_key = 0;
  72
  73         get_random_bytes(&next_stag_index, sizeof(next_stag_index));
  74         stag_key = (u8)next_stag_index;
  75
  76         driver_key = 0;
  77
  78         next_stag_index >>= 8;
  79         next_stag_index %= nesadapter->max_mr;
  80
  81         ret = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
  82                         nesadapter->max_mr, &stag_index, &next_stag_index);
  83         if (ret) {
  84                 return ERR_PTR(ret);
  85         }
  86
  87         nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
  88         if (!nesmr) {
  89                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
  90                 return ERR_PTR(-ENOMEM);
  91         }
  92
  93         stag = stag_index << 8;
  94         stag |= driver_key;
  95         stag += (u32)stag_key;
  96
  97         nes_debug(NES_DBG_MR, "Registering STag 0x%08X, index = 0x%08X\n",
  98                         stag, stag_index);
  99
 100         /* Register the region with the adapter */
 101         cqp_request = nes_get_cqp_request(nesdev);
 102         if (cqp_request == NULL) {
 103                 kfree(nesmr);
 104                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
 105                 return ERR_PTR(-ENOMEM);
 106         }
 107
 108         cqp_request->waiting = 1;
 109         cqp_wqe = &cqp_request->cqp_wqe;
 110
 111         cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] =
 112                         cpu_to_le32( NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_RIGHTS_REMOTE_READ |
 113                         NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_VA_TO |
 114                         NES_CQP_STAG_REM_ACC_EN);
 115
 116         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
 117         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX, (nespd->pd_id & 0x00007fff));
 118         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
 119
 120         atomic_set(&cqp_request->refcount, 2);
 121         nes_post_cqp_request(nesdev, cqp_request);
 122
 123         /* Wait for CQP */
 124         ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
 125                         NES_EVENT_TIMEOUT);
 126         nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
 127                         " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
 128                         stag, ret, cqp_request->major_code, cqp_request->minor_code);
 129         if ((!ret) || (cqp_request->major_code)) {
 130                 nes_put_cqp_request(nesdev, cqp_request);
 131                 kfree(nesmr);
 132                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
 133                 if (!ret) {
 134                         return ERR_PTR(-ETIME);
 135                 } else {
 136                         return ERR_PTR(-ENOMEM);
 137                 }
 138         }
 139         nes_put_cqp_request(nesdev, cqp_request);
 140
 141         nesmr->ibmw.rkey = stag;
 142         nesmr->mode = IWNES_MEMREG_TYPE_MW;
 143         ibmw = &nesmr->ibmw;
 144         nesmr->pbl_4k = 0;
 145         nesmr->pbls_used = 0;
 146
 147         return ibmw;
 148 }
 149
 150
 151 /**
 152  * nes_dealloc_mw
 153  */
 154 static int nes_dealloc_mw(struct ib_mw *ibmw)
 155 {
 156         struct nes_mr *nesmr = to_nesmw(ibmw);
 157         struct nes_vnic *nesvnic = to_nesvnic(ibmw->device);
 158         struct nes_device *nesdev = nesvnic->nesdev;
 159         struct nes_adapter *nesadapter = nesdev->nesadapter;
 160         struct nes_hw_cqp_wqe *cqp_wqe;
 161         struct nes_cqp_request *cqp_request;
 162         int err = 0;
 163         int ret;
 164
 165         /* Deallocate the window with the adapter */
 166         cqp_request = nes_get_cqp_request(nesdev);
 167         if (cqp_request == NULL) {
 168                 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
 169                 return -ENOMEM;
 170         }
 171         cqp_request->waiting = 1;
 172         cqp_wqe = &cqp_request->cqp_wqe;
 173         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
 174         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, NES_CQP_DEALLOCATE_STAG);
 175         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ibmw->rkey);
 176
 177         atomic_set(&cqp_request->refcount, 2);
 178         nes_post_cqp_request(nesdev, cqp_request);
 179
 180         /* Wait for CQP */
 181         nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X to complete.\n",
 182                         ibmw->rkey);
 183         ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
 184                         NES_EVENT_TIMEOUT);
 185         nes_debug(NES_DBG_MR, "Deallocate STag completed, wait_event_timeout ret = %u,"
 186                         " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
 187                         ret, cqp_request->major_code, cqp_request->minor_code);
 188         if (!ret)
 189                 err = -ETIME;
 190         else if (cqp_request->major_code)
 191                 err = -EIO;
 192
 193         nes_put_cqp_request(nesdev, cqp_request);
 194
 195         nes_free_resource(nesadapter, nesadapter->allocated_mrs,
 196                         (ibmw->rkey & 0x0fffff00) >> 8);
 197         kfree(nesmr);
 198
 199         return err;
 200 }
 201
 202
 203 /**
 204  * nes_bind_mw
 205  */
 206 static int nes_bind_mw(struct ib_qp *ibqp, struct ib_mw *ibmw,
 207                 struct ib_mw_bind *ibmw_bind)
 208 {
 209         u64 u64temp;
 210         struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
 211         struct nes_device *nesdev = nesvnic->nesdev;
 212         /* struct nes_mr *nesmr = to_nesmw(ibmw); */
 213         struct nes_qp *nesqp = to_nesqp(ibqp);
 214         struct nes_hw_qp_wqe *wqe;
 215         unsigned long flags = 0;
 216         u32 head;
 217         u32 wqe_misc = 0;
 218         u32 qsize;
 219
 220         if (nesqp->ibqp_state > IB_QPS_RTS)
 221                 return -EINVAL;
 222
 223         spin_lock_irqsave(&nesqp->lock, flags);
 224
 225         head = nesqp->hwqp.sq_head;
 226         qsize = nesqp->hwqp.sq_tail;
 227
 228         /* Check for SQ overflow */
 229         if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
 230                 spin_unlock_irqrestore(&nesqp->lock, flags);
 231                 return -EINVAL;
 232         }
 233
 234         wqe = &nesqp->hwqp.sq_vbase[head];
 235         /* nes_debug(NES_DBG_MR, "processing sq wqe at %p, head = %u.\n", wqe, head); */
 236         nes_fill_init_qp_wqe(wqe, nesqp, head);
 237         u64temp = ibmw_bind->wr_id;
 238         set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX, u64temp);
 239         wqe_misc = NES_IWARP_SQ_OP_BIND;
 240
 241         wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
 242
 243         if (ibmw_bind->send_flags & IB_SEND_SIGNALED)
 244                 wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
 245
 246         if (ibmw_bind->mw_access_flags & IB_ACCESS_REMOTE_WRITE) {
 247                 wqe_misc |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE;
 248         }
 249         if (ibmw_bind->mw_access_flags & IB_ACCESS_REMOTE_READ) {
 250                 wqe_misc |= NES_CQP_STAG_RIGHTS_REMOTE_READ;
 251         }
 252
 253         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_MISC_IDX, wqe_misc);
 254         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_MR_IDX, ibmw_bind->mr->lkey);
 255         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_MW_IDX, ibmw->rkey);
 256         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_LENGTH_LOW_IDX,
 257                         ibmw_bind->length);
 258         wqe->wqe_words[NES_IWARP_SQ_BIND_WQE_LENGTH_HIGH_IDX] = 0;
 259         u64temp = (u64)ibmw_bind->addr;
 260         set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_VA_FBO_LOW_IDX, u64temp);
 261
 262         head++;
 263         if (head >= qsize)
 264                 head = 0;
 265
 266         nesqp->hwqp.sq_head = head;
 267         barrier();
 268
 269         nes_write32(nesdev->regs+NES_WQE_ALLOC,
 270                         (1 << 24) | 0x00800000 | nesqp->hwqp.qp_id);
 271
 272         spin_unlock_irqrestore(&nesqp->lock, flags);
 273
 274         return 0;
 275 }
 276
 277
 278 /**
 279  * nes_alloc_fmr
 280  */
 281 static struct ib_fmr *nes_alloc_fmr(struct ib_pd *ibpd,
 282                 int ibmr_access_flags,
 283                 struct ib_fmr_attr *ibfmr_attr)
 284 {
 285         unsigned long flags;
 286         struct nes_pd *nespd = to_nespd(ibpd);
 287         struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
 288         struct nes_device *nesdev = nesvnic->nesdev;
 289         struct nes_adapter *nesadapter = nesdev->nesadapter;
 290         struct nes_fmr *nesfmr;
 291         struct nes_cqp_request *cqp_request;
 292         struct nes_hw_cqp_wqe *cqp_wqe;
 293         int ret;
 294         u32 stag;
 295         u32 stag_index = 0;
 296         u32 next_stag_index = 0;
 297         u32 driver_key = 0;
 298         u32 opcode = 0;
 299         u8 stag_key = 0;
 300         int i=0;
 301         struct nes_vpbl vpbl;
 302
 303         get_random_bytes(&next_stag_index, sizeof(next_stag_index));
 304         stag_key = (u8)next_stag_index;
 305
 306         driver_key = 0;
 307
 308         next_stag_index >>= 8;
 309         next_stag_index %= nesadapter->max_mr;
 310
 311         ret = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
 312                         nesadapter->max_mr, &stag_index, &next_stag_index);
 313         if (ret) {
 314                 goto failed_resource_alloc;
 315         }
 316
 317         nesfmr = kzalloc(sizeof(*nesfmr), GFP_KERNEL);
 318         if (!nesfmr) {
 319                 ret = -ENOMEM;
 320                 goto failed_fmr_alloc;
 321         }
 322
 323         nesfmr->nesmr.mode = IWNES_MEMREG_TYPE_FMR;
 324         if (ibfmr_attr->max_pages == 1) {
 325                 /* use zero length PBL */
 326                 nesfmr->nesmr.pbl_4k = 0;
 327                 nesfmr->nesmr.pbls_used = 0;
 328         } else if (ibfmr_attr->max_pages <= 32) {
 329                 /* use PBL 256 */
 330                 nesfmr->nesmr.pbl_4k = 0;
 331                 nesfmr->nesmr.pbls_used = 1;
 332         } else if (ibfmr_attr->max_pages <= 512) {
 333                 /* use 4K PBLs */
 334                 nesfmr->nesmr.pbl_4k = 1;
 335                 nesfmr->nesmr.pbls_used = 1;
 336         } else {
 337                 /* use two level 4K PBLs */
 338                 /* add support for two level 256B PBLs */
 339                 nesfmr->nesmr.pbl_4k = 1;
 340                 nesfmr->nesmr.pbls_used = 1 + (ibfmr_attr->max_pages >> 9) +
 341                                 ((ibfmr_attr->max_pages & 511) ? 1 : 0);
 342         }
 343         /* Register the region with the adapter */
 344         spin_lock_irqsave(&nesadapter->pbl_lock, flags);
 345
 346         /* track PBL resources */
 347         if (nesfmr->nesmr.pbls_used != 0) {
 348                 if (nesfmr->nesmr.pbl_4k) {
 349                         if (nesfmr->nesmr.pbls_used > nesadapter->free_4kpbl) {
 350                                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
 351                                 ret = -ENOMEM;
 352                                 goto failed_vpbl_avail;
 353                         } else {
 354                                 nesadapter->free_4kpbl -= nesfmr->nesmr.pbls_used;
 355                         }
 356                 } else {
 357                         if (nesfmr->nesmr.pbls_used > nesadapter->free_256pbl) {
 358                                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
 359                                 ret = -ENOMEM;
 360                                 goto failed_vpbl_avail;
 361                         } else {
 362                                 nesadapter->free_256pbl -= nesfmr->nesmr.pbls_used;
 363                         }
 364                 }
 365         }
 366
 367         /* one level pbl */
 368         if (nesfmr->nesmr.pbls_used == 0) {
 369                 nesfmr->root_vpbl.pbl_vbase = NULL;
 370                 nes_debug(NES_DBG_MR,  "zero level pbl \n");
 371         } else if (nesfmr->nesmr.pbls_used == 1) {
 372                 /* can change it to kmalloc & dma_map_single */
 373                 nesfmr->root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
 374                                 &nesfmr->root_vpbl.pbl_pbase);
 375                 if (!nesfmr->root_vpbl.pbl_vbase) {
 376                         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
 377                         ret = -ENOMEM;
 378                         goto failed_vpbl_alloc;
 379                 }
 380                 nesfmr->leaf_pbl_cnt = 0;
 381                 nes_debug(NES_DBG_MR, "one level pbl, root_vpbl.pbl_vbase=%p \n",
 382                                 nesfmr->root_vpbl.pbl_vbase);
 383         }
 384         /* two level pbl */
 385         else {
 386                 nesfmr->root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 8192,
 387                                 &nesfmr->root_vpbl.pbl_pbase);
 388                 if (!nesfmr->root_vpbl.pbl_vbase) {
 389                         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
 390                         ret = -ENOMEM;
 391                         goto failed_vpbl_alloc;
 392                 }
 393
 394                 nesfmr->leaf_pbl_cnt = nesfmr->nesmr.pbls_used-1;
 395                 nesfmr->root_vpbl.leaf_vpbl = kzalloc(sizeof(*nesfmr->root_vpbl.leaf_vpbl)*1024, GFP_ATOMIC);
 396                 if (!nesfmr->root_vpbl.leaf_vpbl) {
 397                         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
 398                         ret = -ENOMEM;
 399                         goto failed_leaf_vpbl_alloc;
 400                 }
 401
 402                 nes_debug(NES_DBG_MR, "two level pbl, root_vpbl.pbl_vbase=%p"
 403                                 " leaf_pbl_cnt=%d root_vpbl.leaf_vpbl=%p\n",
 404                                 nesfmr->root_vpbl.pbl_vbase, nesfmr->leaf_pbl_cnt, nesfmr->root_vpbl.leaf_vpbl);
 405
 406                 for (i=0; i<nesfmr->leaf_pbl_cnt; i++)
 407                         nesfmr->root_vpbl.leaf_vpbl[i].pbl_vbase = NULL;
 408
 409                 for (i=0; i<nesfmr->leaf_pbl_cnt; i++) {
 410                         vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
 411                                         &vpbl.pbl_pbase);
 412
 413                         if (!vpbl.pbl_vbase) {
 414                                 ret = -ENOMEM;
 415                                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
 416                                 goto failed_leaf_vpbl_pages_alloc;
 417                         }
 418
 419                         nesfmr->root_vpbl.pbl_vbase[i].pa_low = cpu_to_le32((u32)vpbl.pbl_pbase);
 420                         nesfmr->root_vpbl.pbl_vbase[i].pa_high = cpu_to_le32((u32)((((u64)vpbl.pbl_pbase)>>32)));
 421                         nesfmr->root_vpbl.leaf_vpbl[i] = vpbl;
 422
 423                         nes_debug(NES_DBG_MR, "pbase_low=0x%x, pbase_high=0x%x, vpbl=%p\n",
 424                                         nesfmr->root_vpbl.pbl_vbase[i].pa_low,
 425                                         nesfmr->root_vpbl.pbl_vbase[i].pa_high,
 426                                         &nesfmr->root_vpbl.leaf_vpbl[i]);
 427                 }
 428         }
 429         nesfmr->ib_qp = NULL;
 430         nesfmr->access_rights =0;
 431
 432         stag = stag_index << 8;
 433         stag |= driver_key;
 434         stag += (u32)stag_key;
 435
 436         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
 437         cqp_request = nes_get_cqp_request(nesdev);
 438         if (cqp_request == NULL) {
 439                 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
 440                 ret = -ENOMEM;
 441                 goto failed_leaf_vpbl_pages_alloc;
 442         }
 443         cqp_request->waiting = 1;
 444         cqp_wqe = &cqp_request->cqp_wqe;
 445
 446         nes_debug(NES_DBG_MR, "Registering STag 0x%08X, index = 0x%08X\n",
 447                         stag, stag_index);
 448
 449         opcode = NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_VA_TO | NES_CQP_STAG_MR;
 450
 451         if (nesfmr->nesmr.pbl_4k == 1)
 452                 opcode |= NES_CQP_STAG_PBL_BLK_SIZE;
 453
 454         if (ibmr_access_flags & IB_ACCESS_REMOTE_WRITE) {
 455                 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE |
 456                                 NES_CQP_STAG_RIGHTS_LOCAL_WRITE | NES_CQP_STAG_REM_ACC_EN;
 457                 nesfmr->access_rights |=
 458                                 NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_RIGHTS_LOCAL_WRITE |
 459                                 NES_CQP_STAG_REM_ACC_EN;
 460         }
 461
 462         if (ibmr_access_flags & IB_ACCESS_REMOTE_READ) {
 463                 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_READ |
 464                                 NES_CQP_STAG_RIGHTS_LOCAL_READ | NES_CQP_STAG_REM_ACC_EN;
 465                 nesfmr->access_rights |=
 466                                 NES_CQP_STAG_RIGHTS_REMOTE_READ | NES_CQP_STAG_RIGHTS_LOCAL_READ |
 467                                 NES_CQP_STAG_REM_ACC_EN;
 468         }
 469
 470         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
 471         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
 472         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX, (nespd->pd_id & 0x00007fff));
 473         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
 474
 475         cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX] =
 476                         cpu_to_le32((nesfmr->nesmr.pbls_used>1) ?
 477                         (nesfmr->nesmr.pbls_used-1) : nesfmr->nesmr.pbls_used);
 478
 479         atomic_set(&cqp_request->refcount, 2);
 480         nes_post_cqp_request(nesdev, cqp_request);
 481
 482         /* Wait for CQP */
 483         ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
 484                         NES_EVENT_TIMEOUT);
 485         nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
 486                         " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
 487                         stag, ret, cqp_request->major_code, cqp_request->minor_code);
 488
 489         if ((!ret) || (cqp_request->major_code)) {
 490                 nes_put_cqp_request(nesdev, cqp_request);
 491                 ret = (!ret) ? -ETIME : -EIO;
 492                 goto failed_leaf_vpbl_pages_alloc;
 493         }
 494         nes_put_cqp_request(nesdev, cqp_request);
 495         nesfmr->nesmr.ibfmr.lkey = stag;
 496         nesfmr->nesmr.ibfmr.rkey = stag;
 497         nesfmr->attr = *ibfmr_attr;
 498
 499         return &nesfmr->nesmr.ibfmr;
 500
 501         failed_leaf_vpbl_pages_alloc:
 502         /* unroll all allocated pages */
 503         for (i=0; i<nesfmr->leaf_pbl_cnt; i++) {
 504                 if (nesfmr->root_vpbl.leaf_vpbl[i].pbl_vbase) {
 505                         pci_free_consistent(nesdev->pcidev, 4096, nesfmr->root_vpbl.leaf_vpbl[i].pbl_vbase,
 506                                         nesfmr->root_vpbl.leaf_vpbl[i].pbl_pbase);
 507                 }
 508         }
 509         if (nesfmr->root_vpbl.leaf_vpbl)
 510                 kfree(nesfmr->root_vpbl.leaf_vpbl);
 511
 512         failed_leaf_vpbl_alloc:
 513         if (nesfmr->leaf_pbl_cnt == 0) {
 514                 if (nesfmr->root_vpbl.pbl_vbase)
 515                         pci_free_consistent(nesdev->pcidev, 4096, nesfmr->root_vpbl.pbl_vbase,
 516                                         nesfmr->root_vpbl.pbl_pbase);
 517         } else
 518                 pci_free_consistent(nesdev->pcidev, 8192, nesfmr->root_vpbl.pbl_vbase,
 519                                 nesfmr->root_vpbl.pbl_pbase);
 520
 521         failed_vpbl_alloc:
 522         if (nesfmr->nesmr.pbls_used != 0) {
 523                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
 524                 if (nesfmr->nesmr.pbl_4k)
 525                         nesadapter->free_4kpbl += nesfmr->nesmr.pbls_used;
 526                 else
 527                         nesadapter->free_256pbl += nesfmr->nesmr.pbls_used;
 528                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
 529         }
 530
 531 failed_vpbl_avail:
 532         kfree(nesfmr);
 533
 534         failed_fmr_alloc:
 535         nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
 536
 537         failed_resource_alloc:
 538         return ERR_PTR(ret);
 539 }
 540
 541
 542 /**
 543  * nes_dealloc_fmr
 544  */
 545 static int nes_dealloc_fmr(struct ib_fmr *ibfmr)
 546 {
 547         unsigned long flags;
 548         struct nes_mr *nesmr = to_nesmr_from_ibfmr(ibfmr);
 549         struct nes_fmr *nesfmr = to_nesfmr(nesmr);
 550         struct nes_vnic *nesvnic = to_nesvnic(ibfmr->device);
 551         struct nes_device *nesdev = nesvnic->nesdev;
 552         struct nes_adapter *nesadapter = nesdev->nesadapter;
 553         int i = 0;
 554         int rc;
 555
 556         /* free the resources */
 557         if (nesfmr->leaf_pbl_cnt == 0) {
 558                 /* single PBL case */
 559                 if (nesfmr->root_vpbl.pbl_vbase)
 560                         pci_free_consistent(nesdev->pcidev, 4096, nesfmr->root_vpbl.pbl_vbase,
 561                                         nesfmr->root_vpbl.pbl_pbase);
 562         } else {
 563                 for (i = 0; i < nesfmr->leaf_pbl_cnt; i++) {
 564                         pci_free_consistent(nesdev->pcidev, 4096, nesfmr->root_vpbl.leaf_vpbl[i].pbl_vbase,
 565                                         nesfmr->root_vpbl.leaf_vpbl[i].pbl_pbase);
 566                 }
 567                 kfree(nesfmr->root_vpbl.leaf_vpbl);
 568                 pci_free_consistent(nesdev->pcidev, 8192, nesfmr->root_vpbl.pbl_vbase,
 569                                 nesfmr->root_vpbl.pbl_pbase);
 570         }
 571         nesmr->ibmw.device = ibfmr->device;
 572         nesmr->ibmw.pd = ibfmr->pd;
 573         nesmr->ibmw.rkey = ibfmr->rkey;
 574         nesmr->ibmw.uobject = NULL;
 575
 576         rc = nes_dealloc_mw(&nesmr->ibmw);
 577
 578         if ((rc == 0) && (nesfmr->nesmr.pbls_used != 0)) {
 579                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
 580                 if (nesfmr->nesmr.pbl_4k) {
 581                         nesadapter->free_4kpbl += nesfmr->nesmr.pbls_used;
 582                         WARN_ON(nesadapter->free_4kpbl > nesadapter->max_4kpbl);
 583                 } else {
 584                         nesadapter->free_256pbl += nesfmr->nesmr.pbls_used;
 585                         WARN_ON(nesadapter->free_256pbl > nesadapter->max_256pbl);
 586                 }
 587                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
 588         }
 589
 590         return rc;
 591 }
 592
 593
 594 /**
 595  * nes_map_phys_fmr
 596  */
 597 static int nes_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list,
 598                 int list_len, u64 iova)
 599 {
 600         return 0;
 601 }
 602
 603
 604 /**
 605  * nes_unmap_frm
 606  */
 607 static int nes_unmap_fmr(struct list_head *ibfmr_list)
 608 {
 609         return 0;
 610 }
 611
 612
 613
 614 /**
 615  * nes_query_device
 616  */
 617 static int nes_query_device(struct ib_device *ibdev, struct ib_device_attr *props)
 618 {
 619         struct nes_vnic *nesvnic = to_nesvnic(ibdev);
 620         struct nes_device *nesdev = nesvnic->nesdev;
 621         struct nes_ib_device *nesibdev = nesvnic->nesibdev;
 622
 623         memset(props, 0, sizeof(*props));
 624         memcpy(&props->sys_image_guid, nesvnic->netdev->dev_addr, 6);
 625
 626         props->fw_ver = nesdev->nesadapter->fw_ver;
 627         props->device_cap_flags = nesdev->nesadapter->device_cap_flags;
 628         props->vendor_id = nesdev->nesadapter->vendor_id;
 629         props->vendor_part_id = nesdev->nesadapter->vendor_part_id;
 630         props->hw_ver = nesdev->nesadapter->hw_rev;
 631         props->max_mr_size = 0x80000000;
 632         props->max_qp = nesibdev->max_qp;
 633         props->max_qp_wr = nesdev->nesadapter->max_qp_wr - 2;
 634         props->max_sge = nesdev->nesadapter->max_sge;
 635         props->max_cq = nesibdev->max_cq;
 636         props->max_cqe = nesdev->nesadapter->max_cqe - 1;
 637         props->max_mr = nesibdev->max_mr;
 638         props->max_mw = nesibdev->max_mr;
 639         props->max_pd = nesibdev->max_pd;
 640         props->max_sge_rd = 1;
 641         switch (nesdev->nesadapter->max_irrq_wr) {
 642                 case 0:
 643                         props->max_qp_rd_atom = 1;
 644                         break;
 645                 case 1:
 646                         props->max_qp_rd_atom = 4;
 647                         break;
 648                 case 2:
 649                         props->max_qp_rd_atom = 16;
 650                         break;
 651                 case 3:
 652                         props->max_qp_rd_atom = 32;
 653                         break;
 654                 default:
 655                         props->max_qp_rd_atom = 0;
 656         }
 657         props->max_qp_init_rd_atom = props->max_qp_rd_atom;
 658         props->atomic_cap = IB_ATOMIC_NONE;
 659         props->max_map_per_fmr = 1;
 660
 661         return 0;
 662 }
 663
 664
 665 /**
 666  * nes_query_port
 667  */
 668 static int nes_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props)
 669 {
 670         memset(props, 0, sizeof(*props));
 671
 672         props->max_mtu = IB_MTU_2048;
 673         props->active_mtu = IB_MTU_2048;
 674         props->lid = 1;
 675         props->lmc = 0;
 676         props->sm_lid = 0;
 677         props->sm_sl = 0;
 678         props->state = IB_PORT_ACTIVE;
 679         props->phys_state = 0;
 680         props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP |
 681                         IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
 682         props->gid_tbl_len = 1;
 683         props->pkey_tbl_len = 1;
 684         props->qkey_viol_cntr = 0;
 685         props->active_width = IB_WIDTH_4X;
 686         props->active_speed = 1;
 687         props->max_msg_sz = 0x80000000;
 688
 689         return 0;
 690 }
 691
 692
 693 /**
 694  * nes_modify_port
 695  */
 696 static int nes_modify_port(struct ib_device *ibdev, u8 port,
 697                 int port_modify_mask, struct ib_port_modify *props)
 698 {
 699         return 0;
 700 }
 701
 702
 703 /**
 704  * nes_query_pkey
 705  */
 706 static int nes_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
 707 {
 708         *pkey = 0;
 709         return 0;
 710 }
 711
 712
 713 /**
 714  * nes_query_gid
 715  */
 716 static int nes_query_gid(struct ib_device *ibdev, u8 port,
 717                 int index, union ib_gid *gid)
 718 {
 719         struct nes_vnic *nesvnic = to_nesvnic(ibdev);
 720
 721         memset(&(gid->raw[0]), 0, sizeof(gid->raw));
 722         memcpy(&(gid->raw[0]), nesvnic->netdev->dev_addr, 6);
 723
 724         return 0;
 725 }
 726
 727
 728 /**
 729  * nes_alloc_ucontext - Allocate the user context data structure. This keeps track
 730  * of all objects associated with a particular user-mode client.
 731  */
 732 static struct ib_ucontext *nes_alloc_ucontext(struct ib_device *ibdev,
 733                 struct ib_udata *udata)
 734 {
 735         struct nes_vnic *nesvnic = to_nesvnic(ibdev);
 736         struct nes_device *nesdev = nesvnic->nesdev;
 737         struct nes_adapter *nesadapter = nesdev->nesadapter;
 738         struct nes_alloc_ucontext_req req;
 739         struct nes_alloc_ucontext_resp uresp;
 740         struct nes_ucontext *nes_ucontext;
 741         struct nes_ib_device *nesibdev = nesvnic->nesibdev;
 742
 743
 744         if (ib_copy_from_udata(&req, udata, sizeof(struct nes_alloc_ucontext_req))) {
 745                 printk(KERN_ERR PFX "Invalid structure size on allocate user context.\n");
 746                 return ERR_PTR(-EINVAL);
 747         }
 748
 749         if (req.userspace_ver != NES_ABI_USERSPACE_VER) {
 750                 printk(KERN_ERR PFX "Invalid userspace driver version detected. Detected version %d, should be %d\n",
 751                         req.userspace_ver, NES_ABI_USERSPACE_VER);
 752                 return ERR_PTR(-EINVAL);
 753         }
 754
 755
 756         memset(&uresp, 0, sizeof uresp);
 757
 758         uresp.max_qps = nesibdev->max_qp;
 759         uresp.max_pds = nesibdev->max_pd;
 760         uresp.wq_size = nesdev->nesadapter->max_qp_wr * 2;
 761         uresp.virtwq = nesadapter->virtwq;
 762         uresp.kernel_ver = NES_ABI_KERNEL_VER;
 763
 764         nes_ucontext = kzalloc(sizeof *nes_ucontext, GFP_KERNEL);
 765         if (!nes_ucontext)
 766                 return ERR_PTR(-ENOMEM);
 767
 768         nes_ucontext->nesdev = nesdev;
 769         nes_ucontext->mmap_wq_offset = uresp.max_pds;
 770         nes_ucontext->mmap_cq_offset = nes_ucontext->mmap_wq_offset +
 771                         ((sizeof(struct nes_hw_qp_wqe) * uresp.max_qps * 2) + PAGE_SIZE-1) /
 772                         PAGE_SIZE;
 773
 774
 775         if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
 776                 kfree(nes_ucontext);
 777                 return ERR_PTR(-EFAULT);
 778         }
 779
 780         INIT_LIST_HEAD(&nes_ucontext->cq_reg_mem_list);
 781         INIT_LIST_HEAD(&nes_ucontext->qp_reg_mem_list);
 782         atomic_set(&nes_ucontext->usecnt, 1);
 783         return &nes_ucontext->ibucontext;
 784 }
 785
 786
 787 /**
 788  * nes_dealloc_ucontext
 789  */
 790 static int nes_dealloc_ucontext(struct ib_ucontext *context)
 791 {
 792         /* struct nes_vnic *nesvnic = to_nesvnic(context->device); */
 793         /* struct nes_device *nesdev = nesvnic->nesdev; */
 794         struct nes_ucontext *nes_ucontext = to_nesucontext(context);
 795
 796         if (!atomic_dec_and_test(&nes_ucontext->usecnt))
 797           return 0;
 798         kfree(nes_ucontext);
 799         return 0;
 800 }
 801
 802
 803 /**
 804  * nes_mmap
 805  */
 806 static int nes_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
 807 {
 808         unsigned long index;
 809         struct nes_vnic *nesvnic = to_nesvnic(context->device);
 810         struct nes_device *nesdev = nesvnic->nesdev;
 811         /* struct nes_adapter *nesadapter = nesdev->nesadapter; */
 812         struct nes_ucontext *nes_ucontext;
 813         struct nes_qp *nesqp;
 814
 815         nes_ucontext = to_nesucontext(context);
 816
 817
 818         if (vma->vm_pgoff >= nes_ucontext->mmap_wq_offset) {
 819                 index = (vma->vm_pgoff - nes_ucontext->mmap_wq_offset) * PAGE_SIZE;
 820                 index /= ((sizeof(struct nes_hw_qp_wqe) * nesdev->nesadapter->max_qp_wr * 2) +
 821                                 PAGE_SIZE-1) & (~(PAGE_SIZE-1));
 822                 if (!test_bit(index, nes_ucontext->allocated_wqs)) {
 823                         nes_debug(NES_DBG_MMAP, "wq %lu not allocated\n", index);
 824                         return -EFAULT;
 825                 }
 826                 nesqp = nes_ucontext->mmap_nesqp[index];
 827                 if (nesqp == NULL) {
 828                         nes_debug(NES_DBG_MMAP, "wq %lu has a NULL QP base.\n", index);
 829                         return -EFAULT;
 830                 }
 831                 if (remap_pfn_range(vma, vma->vm_start,
 832                                 virt_to_phys(nesqp->hwqp.sq_vbase) >> PAGE_SHIFT,
 833                                 vma->vm_end - vma->vm_start,
 834                                 vma->vm_page_prot)) {
 835                         nes_debug(NES_DBG_MMAP, "remap_pfn_range failed.\n");
 836                         return -EAGAIN;
 837                 }
 838                 vma->vm_private_data = nesqp;
 839                 return 0;
 840         } else {
 841                 index = vma->vm_pgoff;
 842                 if (!test_bit(index, nes_ucontext->allocated_doorbells))
 843                         return -EFAULT;
 844
 845                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 846                 if (io_remap_pfn_range(vma, vma->vm_start,
 847                                 (nesdev->doorbell_start +
 848                                 ((nes_ucontext->mmap_db_index[index] - nesdev->base_doorbell_index) * 4096))
 849                                 >> PAGE_SHIFT, PAGE_SIZE, vma->vm_page_prot))
 850                         return -EAGAIN;
 851                 vma->vm_private_data = nes_ucontext;
 852                 return 0;
 853         }
 854
 855         return -ENOSYS;
 856 }
 857
 858
 859 /**
 860  * nes_alloc_pd
 861  */
 862 static struct ib_pd *nes_alloc_pd(struct ib_device *ibdev,
 863                 struct ib_ucontext *context, struct ib_udata *udata)
 864 {
 865         struct nes_pd *nespd;
 866         struct nes_vnic *nesvnic = to_nesvnic(ibdev);
 867         struct nes_device *nesdev = nesvnic->nesdev;
 868         struct nes_adapter *nesadapter = nesdev->nesadapter;
 869         struct nes_ucontext *nesucontext;
 870         struct nes_alloc_pd_resp uresp;
 871         u32 pd_num = 0;
 872         int err;
 873
 874         nes_debug(NES_DBG_PD, "nesvnic=%p, netdev=%p %s, ibdev=%p, context=%p, netdev refcnt=%u\n",
 875                         nesvnic, nesdev->netdev[0], nesdev->netdev[0]->name, ibdev, context,
 876                         atomic_read(&nesvnic->netdev->refcnt));
 877
 878         err = nes_alloc_resource(nesadapter, nesadapter->allocated_pds,
 879                         nesadapter->max_pd, &pd_num, &nesadapter->next_pd);
 880         if (err) {
 881                 return ERR_PTR(err);
 882         }
 883
 884         nespd = kzalloc(sizeof (struct nes_pd), GFP_KERNEL);
 885         if (!nespd) {
 886                 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
 887                 return ERR_PTR(-ENOMEM);
 888         }
 889
 890         nes_debug(NES_DBG_PD, "Allocating PD (%p) for ib device %s\n",
 891                         nespd, nesvnic->nesibdev->ibdev.name);
 892
 893         nespd->pd_id = (pd_num << (PAGE_SHIFT-12)) + nesadapter->base_pd;
 894
 895         if (context) {
 896                 nesucontext = to_nesucontext(context);
 897                 nespd->mmap_db_index = find_next_zero_bit(nesucontext->allocated_doorbells,
 898                                 NES_MAX_USER_DB_REGIONS, nesucontext->first_free_db);
 899                 nes_debug(NES_DBG_PD, "find_first_zero_biton doorbells returned %u, mapping pd_id %u.\n",
 900                                 nespd->mmap_db_index, nespd->pd_id);
 901                 if (nespd->mmap_db_index >= NES_MAX_USER_DB_REGIONS) {
 902                         nes_debug(NES_DBG_PD, "mmap_db_index > MAX\n");
 903                         nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
 904                         kfree(nespd);
 905                         return ERR_PTR(-ENOMEM);
 906                 }
 907
 908                 uresp.pd_id = nespd->pd_id;
 909                 uresp.mmap_db_index = nespd->mmap_db_index;
 910                 if (ib_copy_to_udata(udata, &uresp, sizeof (struct nes_alloc_pd_resp))) {
 911                         nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
 912                         kfree(nespd);
 913                         return ERR_PTR(-EFAULT);
 914                 }
 915
 916                 set_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
 917                 nesucontext->mmap_db_index[nespd->mmap_db_index] = nespd->pd_id;
 918                 nesucontext->first_free_db = nespd->mmap_db_index + 1;
 919         }
 920
 921         nes_debug(NES_DBG_PD, "PD%u structure located @%p.\n", nespd->pd_id, nespd);
 922         return &nespd->ibpd;
 923 }
 924
 925
 926 /**
 927  * nes_dealloc_pd
 928  */
 929 static int nes_dealloc_pd(struct ib_pd *ibpd)
 930 {
 931         struct nes_ucontext *nesucontext;
 932         struct nes_pd *nespd = to_nespd(ibpd);
 933         struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
 934         struct nes_device *nesdev = nesvnic->nesdev;
 935         struct nes_adapter *nesadapter = nesdev->nesadapter;
 936
 937         if ((ibpd->uobject) && (ibpd->uobject->context)) {
 938                 nesucontext = to_nesucontext(ibpd->uobject->context);
 939                 nes_debug(NES_DBG_PD, "Clearing bit %u from allocated doorbells\n",
 940                                 nespd->mmap_db_index);
 941                 clear_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
 942                 nesucontext->mmap_db_index[nespd->mmap_db_index] = 0;
 943                 if (nesucontext->first_free_db > nespd->mmap_db_index) {
 944                         nesucontext->first_free_db = nespd->mmap_db_index;
 945                 }
 946         }
 947
 948         nes_debug(NES_DBG_PD, "Deallocating PD%u structure located @%p.\n",
 949                         nespd->pd_id, nespd);
 950         nes_free_resource(nesadapter, nesadapter->allocated_pds,
 951                         (nespd->pd_id-nesadapter->base_pd)>>(PAGE_SHIFT-12));
 952         kfree(nespd);
 953
 954         return 0;
 955 }
 956
 957
 958 /**
 959  * nes_create_ah
 960  */
 961 static struct ib_ah *nes_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
 962 {
 963         return ERR_PTR(-ENOSYS);
 964 }
 965
 966
 967 /**
 968  * nes_destroy_ah
 969  */
 970 static int nes_destroy_ah(struct ib_ah *ah)
 971 {
 972         return -ENOSYS;
 973 }
 974
 975
 976 /**
 977  * nes_get_encoded_size
 978  */
 979 static inline u8 nes_get_encoded_size(int *size)
 980 {
 981         u8 encoded_size = 0;
 982         if (*size <= 32) {
 983                 *size = 32;
 984                 encoded_size = 1;
 985         } else if (*size <= 128) {
 986                 *size = 128;
 987                 encoded_size = 2;
 988         } else if (*size <= 512) {
 989                 *size = 512;
 990                 encoded_size = 3;
 991         }
 992         return (encoded_size);
 993 }
 994
 995
 996
 997 /**
 998  * nes_setup_virt_qp
 999  */
1000 static int nes_setup_virt_qp(struct nes_qp *nesqp, struct nes_pbl *nespbl,
1001                 struct nes_vnic *nesvnic, int sq_size, int rq_size)
1002 {
1003         unsigned long flags;
1004         void *mem;
1005         __le64 *pbl = NULL;
1006         __le64 *tpbl;
1007         __le64 *pblbuffer;
1008         struct nes_device *nesdev = nesvnic->nesdev;
1009         struct nes_adapter *nesadapter = nesdev->nesadapter;
1010         u32 pbl_entries;
1011         u8 rq_pbl_entries;
1012         u8 sq_pbl_entries;
1013
1014         pbl_entries = nespbl->pbl_size >> 3;
1015         nes_debug(NES_DBG_QP, "Userspace PBL, pbl_size=%u, pbl_entries = %d pbl_vbase=%p, pbl_pbase=%lx\n",
1016                         nespbl->pbl_size, pbl_entries,
1017                         (void *)nespbl->pbl_vbase,
1018                         (unsigned long) nespbl->pbl_pbase);
1019         pbl = (__le64 *) nespbl->pbl_vbase; /* points to first pbl entry */
1020         /* now lets set the sq_vbase as well as rq_vbase addrs we will assign */
1021         /* the first pbl to be fro the rq_vbase... */
1022         rq_pbl_entries = (rq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
1023         sq_pbl_entries = (sq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
1024         nesqp->hwqp.sq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
1025         if (!nespbl->page) {
1026                 nes_debug(NES_DBG_QP, "QP nespbl->page is NULL \n");
1027                 kfree(nespbl);
1028                 return -ENOMEM;
1029         }
1030
1031         nesqp->hwqp.sq_vbase = kmap(nespbl->page);
1032         nesqp->page = nespbl->page;
1033         if (!nesqp->hwqp.sq_vbase) {
1034                 nes_debug(NES_DBG_QP, "QP sq_vbase kmap failed\n");
1035                 kfree(nespbl);
1036                 return -ENOMEM;
1037         }
1038
1039         /* Now to get to sq.. we need to calculate how many */
1040         /* PBL entries were used by the rq.. */
1041         pbl += sq_pbl_entries;
1042         nesqp->hwqp.rq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
1043         /* nesqp->hwqp.rq_vbase = bus_to_virt(*pbl); */
1044         /*nesqp->hwqp.rq_vbase = phys_to_virt(*pbl); */
1045
1046         nes_debug(NES_DBG_QP, "QP sq_vbase= %p sq_pbase=%lx rq_vbase=%p rq_pbase=%lx\n",
1047                   nesqp->hwqp.sq_vbase, (unsigned long) nesqp->hwqp.sq_pbase,
1048                   nesqp->hwqp.rq_vbase, (unsigned long) nesqp->hwqp.rq_pbase);
1049         spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1050         if (!nesadapter->free_256pbl) {
1051                 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1052                                 nespbl->pbl_pbase);
1053                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1054                 kunmap(nesqp->page);
1055                 kfree(nespbl);
1056                 return -ENOMEM;
1057         }
1058         nesadapter->free_256pbl--;
1059         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1060
1061         nesqp->pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 256, &nesqp->pbl_pbase);
1062         pblbuffer = nesqp->pbl_vbase;
1063         if (!nesqp->pbl_vbase) {
1064                 /* memory allocated during nes_reg_user_mr() */
1065                 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1066                                     nespbl->pbl_pbase);
1067                 kfree(nespbl);
1068                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1069                 nesadapter->free_256pbl++;
1070                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1071                 kunmap(nesqp->page);
1072                 return -ENOMEM;
1073         }
1074         memset(nesqp->pbl_vbase, 0, 256);
1075         /* fill in the page address in the pbl buffer.. */
1076         tpbl = pblbuffer + 16;
1077         pbl = (__le64 *)nespbl->pbl_vbase;
1078         while (sq_pbl_entries--)
1079                 *tpbl++ = *pbl++;
1080         tpbl = pblbuffer;
1081         while (rq_pbl_entries--)
1082                 *tpbl++ = *pbl++;
1083
1084         /* done with memory allocated during nes_reg_user_mr() */
1085         pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1086                             nespbl->pbl_pbase);
1087         kfree(nespbl);
1088
1089         nesqp->qp_mem_size =
1090                         max((u32)sizeof(struct nes_qp_context), ((u32)256)) + 256;     /* this is Q2 */
1091         /* Round up to a multiple of a page */
1092         nesqp->qp_mem_size += PAGE_SIZE - 1;
1093         nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
1094
1095         mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1096                         &nesqp->hwqp.q2_pbase);
1097
1098         if (!mem) {
1099                 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase);
1100                 nesqp->pbl_vbase = NULL;
1101                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1102                 nesadapter->free_256pbl++;
1103                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1104                 kunmap(nesqp->page);
1105                 return -ENOMEM;
1106         }
1107         nesqp->hwqp.q2_vbase = mem;
1108         mem += 256;
1109         memset(nesqp->hwqp.q2_vbase, 0, 256);
1110         nesqp->nesqp_context = mem;
1111         memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
1112         nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
1113
1114         return 0;
1115 }
1116
1117
1118 /**
1119  * nes_setup_mmap_qp
1120  */
1121 static int nes_setup_mmap_qp(struct nes_qp *nesqp, struct nes_vnic *nesvnic,
1122                 int sq_size, int rq_size)
1123 {
1124         void *mem;
1125         struct nes_device *nesdev = nesvnic->nesdev;
1126
1127         nesqp->qp_mem_size = (sizeof(struct nes_hw_qp_wqe) * sq_size) +
1128                         (sizeof(struct nes_hw_qp_wqe) * rq_size) +
1129                         max((u32)sizeof(struct nes_qp_context), ((u32)256)) +
1130                         256; /* this is Q2 */
1131         /* Round up to a multiple of a page */
1132         nesqp->qp_mem_size += PAGE_SIZE - 1;
1133         nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
1134
1135         mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1136                         &nesqp->hwqp.sq_pbase);
1137         if (!mem)
1138                 return -ENOMEM;
1139         nes_debug(NES_DBG_QP, "PCI consistent memory for "
1140                         "host descriptor rings located @ %p (pa = 0x%08lX.) size = %u.\n",
1141                         mem, (unsigned long)nesqp->hwqp.sq_pbase, nesqp->qp_mem_size);
1142
1143         memset(mem, 0, nesqp->qp_mem_size);
1144
1145         nesqp->hwqp.sq_vbase = mem;
1146         mem += sizeof(struct nes_hw_qp_wqe) * sq_size;
1147
1148         nesqp->hwqp.rq_vbase = mem;
1149         nesqp->hwqp.rq_pbase = nesqp->hwqp.sq_pbase +
1150                         sizeof(struct nes_hw_qp_wqe) * sq_size;
1151         mem += sizeof(struct nes_hw_qp_wqe) * rq_size;
1152
1153         nesqp->hwqp.q2_vbase = mem;
1154         nesqp->hwqp.q2_pbase = nesqp->hwqp.rq_pbase +
1155                         sizeof(struct nes_hw_qp_wqe) * rq_size;
1156         mem += 256;
1157         memset(nesqp->hwqp.q2_vbase, 0, 256);
1158
1159         nesqp->nesqp_context = mem;
1160         nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
1161         memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
1162         return 0;
1163 }
1164
1165
1166 /**
1167  * nes_free_qp_mem() is to free up the qp's pci_alloc_consistent() memory.
1168  */
1169 static inline void nes_free_qp_mem(struct nes_device *nesdev,
1170                 struct nes_qp *nesqp, int virt_wqs)
1171 {
1172         unsigned long flags;
1173         struct nes_adapter *nesadapter = nesdev->nesadapter;
1174         if (!virt_wqs) {
1175                 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1176                                 nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase);
1177         }else {
1178                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1179                 nesadapter->free_256pbl++;
1180                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1181                 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size, nesqp->hwqp.q2_vbase, nesqp->hwqp.q2_pbase);
1182                 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase );
1183                 nesqp->pbl_vbase = NULL;
1184                 kunmap(nesqp->page);
1185         }
1186 }
1187
1188
1189 /**
1190  * nes_create_qp
1191  */
1192 static struct ib_qp *nes_create_qp(struct ib_pd *ibpd,
1193                 struct ib_qp_init_attr *init_attr, struct ib_udata *udata)
1194 {
1195         u64 u64temp= 0;
1196         u64 u64nesqp = 0;
1197         struct nes_pd *nespd = to_nespd(ibpd);
1198         struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
1199         struct nes_device *nesdev = nesvnic->nesdev;
1200         struct nes_adapter *nesadapter = nesdev->nesadapter;
1201         struct nes_qp *nesqp;
1202         struct nes_cq *nescq;
1203         struct nes_ucontext *nes_ucontext;
1204         struct nes_hw_cqp_wqe *cqp_wqe;
1205         struct nes_cqp_request *cqp_request;
1206         struct nes_create_qp_req req;
1207         struct nes_create_qp_resp uresp;
1208         struct nes_pbl  *nespbl = NULL;
1209         u32 qp_num = 0;
1210         u32 opcode = 0;
1211         /* u32 counter = 0; */
1212         void *mem;
1213         unsigned long flags;
1214         int ret;
1215         int err;
1216         int virt_wqs = 0;
1217         int sq_size;
1218         int rq_size;
1219         u8 sq_encoded_size;
1220         u8 rq_encoded_size;
1221         /* int counter; */
1222
1223         if (init_attr->create_flags)
1224                 return ERR_PTR(-EINVAL);
1225
1226         atomic_inc(&qps_created);
1227         switch (init_attr->qp_type) {
1228                 case IB_QPT_RC:
1229                         if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) {
1230                                 init_attr->cap.max_inline_data = 0;
1231                         } else {
1232                                 init_attr->cap.max_inline_data = 64;
1233                         }
1234                         sq_size = init_attr->cap.max_send_wr;
1235                         rq_size = init_attr->cap.max_recv_wr;
1236
1237                         /* check if the encoded sizes are OK or not... */
1238                         sq_encoded_size = nes_get_encoded_size(&sq_size);
1239                         rq_encoded_size = nes_get_encoded_size(&rq_size);
1240
1241                         if ((!sq_encoded_size) || (!rq_encoded_size)) {
1242                                 nes_debug(NES_DBG_QP, "ERROR bad rq (%u) or sq (%u) size\n",
1243                                                 rq_size, sq_size);
1244                                 return ERR_PTR(-EINVAL);
1245                         }
1246
1247                         init_attr->cap.max_send_wr = sq_size -2;
1248                         init_attr->cap.max_recv_wr = rq_size -1;
1249                         nes_debug(NES_DBG_QP, "RQ size=%u, SQ Size=%u\n", rq_size, sq_size);
1250
1251                         ret = nes_alloc_resource(nesadapter, nesadapter->allocated_qps,
1252                                         nesadapter->max_qp, &qp_num, &nesadapter->next_qp);
1253                         if (ret) {
1254                                 return ERR_PTR(ret);
1255                         }
1256
1257                         /* Need 512 (actually now 1024) byte alignment on this structure */
1258                         mem = kzalloc(sizeof(*nesqp)+NES_SW_CONTEXT_ALIGN-1, GFP_KERNEL);
1259                         if (!mem) {
1260                                 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1261                                 nes_debug(NES_DBG_QP, "Unable to allocate QP\n");
1262                                 return ERR_PTR(-ENOMEM);
1263                         }
1264                         u64nesqp = (unsigned long)mem;
1265                         u64nesqp += ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1266                         u64temp = ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1267                         u64nesqp &= ~u64temp;
1268                         nesqp = (struct nes_qp *)(unsigned long)u64nesqp;
1269                         /* nes_debug(NES_DBG_QP, "nesqp=%p, allocated buffer=%p.  Rounded to closest %u\n",
1270                                         nesqp, mem, NES_SW_CONTEXT_ALIGN); */
1271                         nesqp->allocated_buffer = mem;
1272
1273                         if (udata) {
1274                                 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_create_qp_req))) {
1275                                         nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1276                                         kfree(nesqp->allocated_buffer);
1277                                         nes_debug(NES_DBG_QP, "ib_copy_from_udata() Failed \n");
1278                                         return NULL;
1279                                 }
1280                                 if (req.user_wqe_buffers) {
1281                                         virt_wqs = 1;
1282                                 }
1283                                 if ((ibpd->uobject) && (ibpd->uobject->context)) {
1284                                         nesqp->user_mode = 1;
1285                                         nes_ucontext = to_nesucontext(ibpd->uobject->context);
1286                                         if (virt_wqs) {
1287                                                 err = 1;
1288                                                 list_for_each_entry(nespbl, &nes_ucontext->qp_reg_mem_list, list) {
1289                                                         if (nespbl->user_base == (unsigned long )req.user_wqe_buffers) {
1290                                                                 list_del(&nespbl->list);
1291                                                                 err = 0;
1292                                                                 nes_debug(NES_DBG_QP, "Found PBL for virtual QP. nespbl=%p. user_base=0x%lx\n",
1293                                                                           nespbl, nespbl->user_base);
1294                                                                 break;
1295                                                         }
1296                                                 }
1297                                                 if (err) {
1298                                                         nes_debug(NES_DBG_QP, "Didn't Find PBL for virtual QP. address = %llx.\n",
1299                                                                   (long long unsigned int)req.user_wqe_buffers);
1300                                                         nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1301                                                         kfree(nesqp->allocated_buffer);
1302                                                         return ERR_PTR(-EFAULT);
1303                                                 }
1304                                         }
1305
1306                                         nes_ucontext = to_nesucontext(ibpd->uobject->context);
1307                                         nesqp->mmap_sq_db_index =
1308                                                 find_next_zero_bit(nes_ucontext->allocated_wqs,
1309                                                                    NES_MAX_USER_WQ_REGIONS, nes_ucontext->first_free_wq);
1310                                         /* nes_debug(NES_DBG_QP, "find_first_zero_biton wqs returned %u\n",
1311                                                         nespd->mmap_db_index); */
1312                                         if (nesqp->mmap_sq_db_index >= NES_MAX_USER_WQ_REGIONS) {
1313                                                 nes_debug(NES_DBG_QP,
1314                                                           "db index > max user regions, failing create QP\n");
1315                                                 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1316                                                 if (virt_wqs) {
1317                                                         pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1318                                                                             nespbl->pbl_pbase);
1319                                                         kfree(nespbl);
1320                                                 }
1321                                                 kfree(nesqp->allocated_buffer);
1322                                                 return ERR_PTR(-ENOMEM);
1323                                         }
1324                                         set_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1325                                         nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = nesqp;
1326                                         nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index + 1;
1327                                 } else {
1328                                         nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1329                                         kfree(nesqp->allocated_buffer);
1330                                         return ERR_PTR(-EFAULT);
1331                                 }
1332                         }
1333                         err = (!virt_wqs) ? nes_setup_mmap_qp(nesqp, nesvnic, sq_size, rq_size) :
1334                                         nes_setup_virt_qp(nesqp, nespbl, nesvnic, sq_size, rq_size);
1335                         if (err) {
1336                                 nes_debug(NES_DBG_QP,
1337                                           "error geting qp mem code = %d\n", err);
1338                                 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1339                                 kfree(nesqp->allocated_buffer);
1340                                 return ERR_PTR(-ENOMEM);
1341                         }
1342
1343                         nesqp->hwqp.sq_size = sq_size;
1344                         nesqp->hwqp.sq_encoded_size = sq_encoded_size;
1345                         nesqp->hwqp.sq_head = 1;
1346                         nesqp->hwqp.rq_size = rq_size;
1347                         nesqp->hwqp.rq_encoded_size = rq_encoded_size;
1348                         /* nes_debug(NES_DBG_QP, "nesqp->nesqp_context_pbase = %p\n",
1349                                         (void *)nesqp->nesqp_context_pbase);
1350                         */
1351                         nesqp->hwqp.qp_id = qp_num;
1352                         nesqp->ibqp.qp_num = nesqp->hwqp.qp_id;
1353                         nesqp->nespd = nespd;
1354
1355                         nescq = to_nescq(init_attr->send_cq);
1356                         nesqp->nesscq = nescq;
1357                         nescq = to_nescq(init_attr->recv_cq);
1358                         nesqp->nesrcq = nescq;
1359
1360                         nesqp->nesqp_context->misc |= cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) <<
1361                                         NES_QPCONTEXT_MISC_PCI_FCN_SHIFT);
1362                         nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.rq_encoded_size <<
1363                                         NES_QPCONTEXT_MISC_RQ_SIZE_SHIFT);
1364                         nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.sq_encoded_size <<
1365                                         NES_QPCONTEXT_MISC_SQ_SIZE_SHIFT);
1366                         if (!udata) {
1367                                 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_PRIV_EN);
1368                                 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_FAST_REGISTER_EN);
1369                         }
1370                         nesqp->nesqp_context->cqs = cpu_to_le32(nesqp->nesscq->hw_cq.cq_number +
1371                                         ((u32)nesqp->nesrcq->hw_cq.cq_number << 16));
1372                         u64temp = (u64)nesqp->hwqp.sq_pbase;
1373                         nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1374                         nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1375
1376
1377                         if (!virt_wqs) {
1378                                 u64temp = (u64)nesqp->hwqp.sq_pbase;
1379                                 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1380                                 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1381                                 u64temp = (u64)nesqp->hwqp.rq_pbase;
1382                                 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1383                                 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1384                         } else {
1385                                 u64temp = (u64)nesqp->pbl_pbase;
1386                                 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1387                                 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1388                         }
1389
1390                         /* nes_debug(NES_DBG_QP, "next_qp_nic_index=%u, using nic_index=%d\n",
1391                                         nesvnic->next_qp_nic_index,
1392                                         nesvnic->qp_nic_index[nesvnic->next_qp_nic_index]); */
1393                         spin_lock_irqsave(&nesdev->cqp.lock, flags);
1394                         nesqp->nesqp_context->misc2 |= cpu_to_le32(
1395                                         (u32)nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] <<
1396                                         NES_QPCONTEXT_MISC2_NIC_INDEX_SHIFT);
1397                         nesvnic->next_qp_nic_index++;
1398                         if ((nesvnic->next_qp_nic_index > 3) ||
1399                                         (nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] == 0xf)) {
1400                                 nesvnic->next_qp_nic_index = 0;
1401                         }
1402                         spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
1403
1404                         nesqp->nesqp_context->pd_index_wscale |= cpu_to_le32((u32)nesqp->nespd->pd_id << 16);
1405                         u64temp = (u64)nesqp->hwqp.q2_pbase;
1406                         nesqp->nesqp_context->q2_addr_low = cpu_to_le32((u32)u64temp);
1407                         nesqp->nesqp_context->q2_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1408                         nesqp->nesqp_context->aeq_token_low =  cpu_to_le32((u32)((unsigned long)(nesqp)));
1409                         nesqp->nesqp_context->aeq_token_high =  cpu_to_le32((u32)(upper_32_bits((unsigned long)(nesqp))));
1410                         nesqp->nesqp_context->ird_ord_sizes = cpu_to_le32(NES_QPCONTEXT_ORDIRD_ALSMM |
1411                                         ((((u32)nesadapter->max_irrq_wr) <<
1412                                         NES_QPCONTEXT_ORDIRD_IRDSIZE_SHIFT) & NES_QPCONTEXT_ORDIRD_IRDSIZE_MASK));
1413                         if (disable_mpa_crc) {
1414                                 nes_debug(NES_DBG_QP, "Disabling MPA crc checking due to module option.\n");
1415                                 nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32(NES_QPCONTEXT_ORDIRD_RNMC);
1416                         }
1417
1418
1419                         /* Create the QP */
1420                         cqp_request = nes_get_cqp_request(nesdev);
1421                         if (cqp_request == NULL) {
1422                                 nes_debug(NES_DBG_QP, "Failed to get a cqp_request\n");
1423                                 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1424                                 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1425                                 kfree(nesqp->allocated_buffer);
1426                                 return ERR_PTR(-ENOMEM);
1427                         }
1428                         cqp_request->waiting = 1;
1429                         cqp_wqe = &cqp_request->cqp_wqe;
1430
1431                         if (!virt_wqs) {
1432                                 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP |
1433                                         NES_CQP_QP_IWARP_STATE_IDLE;
1434                         } else {
1435                                 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP | NES_CQP_QP_VIRT_WQS |
1436                                         NES_CQP_QP_IWARP_STATE_IDLE;
1437                         }
1438                         opcode |= NES_CQP_QP_CQS_VALID;
1439                         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1440                         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1441                         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
1442
1443                         u64temp = (u64)nesqp->nesqp_context_pbase;
1444                         set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp);
1445
1446                         atomic_set(&cqp_request->refcount, 2);
1447                         nes_post_cqp_request(nesdev, cqp_request);
1448
1449                         /* Wait for CQP */
1450                         nes_debug(NES_DBG_QP, "Waiting for create iWARP QP%u to complete.\n",
1451                                         nesqp->hwqp.qp_id);
1452                         ret = wait_event_timeout(cqp_request->waitq,
1453                                         (cqp_request->request_done != 0), NES_EVENT_TIMEOUT);
1454                         nes_debug(NES_DBG_QP, "Create iwarp QP%u completed, wait_event_timeout ret=%u,"
1455                                         " nesdev->cqp_head = %u, nesdev->cqp.sq_tail = %u,"
1456                                         " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1457                                         nesqp->hwqp.qp_id, ret, nesdev->cqp.sq_head, nesdev->cqp.sq_tail,
1458                                         cqp_request->major_code, cqp_request->minor_code);
1459                         if ((!ret) || (cqp_request->major_code)) {
1460                                 nes_put_cqp_request(nesdev, cqp_request);
1461                                 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1462                                 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1463                                 kfree(nesqp->allocated_buffer);
1464                                 if (!ret) {
1465                                         return ERR_PTR(-ETIME);
1466                                 } else {
1467                                         return ERR_PTR(-EIO);
1468                                 }
1469                         }
1470
1471                         nes_put_cqp_request(nesdev, cqp_request);
1472
1473                         if (ibpd->uobject) {
1474                                 uresp.mmap_sq_db_index = nesqp->mmap_sq_db_index;
1475                                 uresp.actual_sq_size = sq_size;
1476                                 uresp.actual_rq_size = rq_size;
1477                                 uresp.qp_id = nesqp->hwqp.qp_id;
1478                                 uresp.nes_drv_opt = nes_drv_opt;
1479                                 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
1480                                         nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1481                                         nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1482                                         kfree(nesqp->allocated_buffer);
1483                                         return ERR_PTR(-EFAULT);
1484                                 }
1485                         }
1486
1487                         nes_debug(NES_DBG_QP, "QP%u structure located @%p.Size = %u.\n",
1488                                         nesqp->hwqp.qp_id, nesqp, (u32)sizeof(*nesqp));
1489                         spin_lock_init(&nesqp->lock);
1490                         init_waitqueue_head(&nesqp->state_waitq);
1491                         init_waitqueue_head(&nesqp->kick_waitq);
1492                         nes_add_ref(&nesqp->ibqp);
1493                         break;
1494                 default:
1495                         nes_debug(NES_DBG_QP, "Invalid QP type: %d\n", init_attr->qp_type);
1496                         return ERR_PTR(-EINVAL);
1497         }
1498
1499         /* update the QP table */
1500         nesdev->nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = nesqp;
1501         nes_debug(NES_DBG_QP, "netdev refcnt=%u\n",
1502                         atomic_read(&nesvnic->netdev->refcnt));
1503
1504         return &nesqp->ibqp;
1505 }
1506
1507
1508 /**
1509  * nes_destroy_qp
1510  */
1511 static int nes_destroy_qp(struct ib_qp *ibqp)
1512 {
1513         struct nes_qp *nesqp = to_nesqp(ibqp);
1514         /* struct nes_vnic *nesvnic = to_nesvnic(ibqp->device); */
1515         struct nes_ucontext *nes_ucontext;
1516         struct ib_qp_attr attr;
1517         struct iw_cm_id *cm_id;
1518         struct iw_cm_event cm_event;
1519         int ret;
1520
1521         atomic_inc(&sw_qps_destroyed);
1522         nesqp->destroyed = 1;
1523
1524         /* Blow away the connection if it exists. */
1525         if (nesqp->ibqp_state >= IB_QPS_INIT && nesqp->ibqp_state <= IB_QPS_RTS) {
1526                 /* if (nesqp->ibqp_state == IB_QPS_RTS) { */
1527                 attr.qp_state = IB_QPS_ERR;
1528                 nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL);
1529         }
1530
1531         if (((nesqp->ibqp_state == IB_QPS_INIT) ||
1532                         (nesqp->ibqp_state == IB_QPS_RTR)) && (nesqp->cm_id)) {
1533                 cm_id = nesqp->cm_id;
1534                 cm_event.event = IW_CM_EVENT_CONNECT_REPLY;
1535                 cm_event.status = IW_CM_EVENT_STATUS_TIMEOUT;
1536                 cm_event.local_addr = cm_id->local_addr;
1537                 cm_event.remote_addr = cm_id->remote_addr;
1538                 cm_event.private_data = NULL;
1539                 cm_event.private_data_len = 0;
1540
1541                 nes_debug(NES_DBG_QP, "Generating a CM Timeout Event for "
1542                                 "QP%u. cm_id = %p, refcount = %u. \n",
1543                                 nesqp->hwqp.qp_id, cm_id, atomic_read(&nesqp->refcount));
1544
1545                 cm_id->rem_ref(cm_id);
1546                 ret = cm_id->event_handler(cm_id, &cm_event);
1547                 if (ret)
1548                         nes_debug(NES_DBG_QP, "OFA CM event_handler returned, ret=%d\n", ret);
1549         }
1550
1551
1552         if (nesqp->user_mode) {
1553                 if ((ibqp->uobject)&&(ibqp->uobject->context)) {
1554                         nes_ucontext = to_nesucontext(ibqp->uobject->context);
1555                         clear_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1556                         nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = NULL;
1557                         if (nes_ucontext->first_free_wq > nesqp->mmap_sq_db_index) {
1558                                 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index;
1559                         }
1560                 }
1561                 if (nesqp->pbl_pbase)
1562                         kunmap(nesqp->page);
1563         }
1564
1565         nes_rem_ref(&nesqp->ibqp);
1566         return 0;
1567 }
1568
1569
1570 /**
1571  * nes_create_cq
1572  */
1573 static struct ib_cq *nes_create_cq(struct ib_device *ibdev, int entries,
1574                 int comp_vector,
1575                 struct ib_ucontext *context, struct ib_udata *udata)
1576 {
1577         u64 u64temp;
1578         struct nes_vnic *nesvnic = to_nesvnic(ibdev);
1579         struct nes_device *nesdev = nesvnic->nesdev;
1580         struct nes_adapter *nesadapter = nesdev->nesadapter;
1581         struct nes_cq *nescq;
1582         struct nes_ucontext *nes_ucontext = NULL;
1583         struct nes_cqp_request *cqp_request;
1584         void *mem = NULL;
1585         struct nes_hw_cqp_wqe *cqp_wqe;
1586         struct nes_pbl *nespbl = NULL;
1587         struct nes_create_cq_req req;
1588         struct nes_create_cq_resp resp;
1589         u32 cq_num = 0;
1590         u32 opcode = 0;
1591         u32 pbl_entries = 1;
1592         int err;
1593         unsigned long flags;
1594         int ret;
1595
1596         err = nes_alloc_resource(nesadapter, nesadapter->allocated_cqs,
1597                         nesadapter->max_cq, &cq_num, &nesadapter->next_cq);
1598         if (err) {
1599                 return ERR_PTR(err);
1600         }
1601
1602         nescq = kzalloc(sizeof(struct nes_cq), GFP_KERNEL);
1603         if (!nescq) {
1604                 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1605                 nes_debug(NES_DBG_CQ, "Unable to allocate nes_cq struct\n");
1606                 return ERR_PTR(-ENOMEM);
1607         }
1608
1609         nescq->hw_cq.cq_size = max(entries + 1, 5);
1610         nescq->hw_cq.cq_number = cq_num;
1611         nescq->ibcq.cqe = nescq->hw_cq.cq_size - 1;
1612
1613
1614         if (context) {
1615                 nes_ucontext = to_nesucontext(context);
1616                 if (ib_copy_from_udata(&req, udata, sizeof (struct nes_create_cq_req))) {
1617                         nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1618                         kfree(nescq);
1619                         return ERR_PTR(-EFAULT);
1620                 }
1621                 nesvnic->mcrq_ucontext = nes_ucontext;
1622                 nes_ucontext->mcrqf = req.mcrqf;
1623                 if (nes_ucontext->mcrqf) {
1624                         if (nes_ucontext->mcrqf & 0x80000000)
1625                                 nescq->hw_cq.cq_number = nesvnic->nic.qp_id + 28 + 2 * ((nes_ucontext->mcrqf & 0xf) - 1);
1626                         else if (nes_ucontext->mcrqf & 0x40000000)
1627                                 nescq->hw_cq.cq_number = nes_ucontext->mcrqf & 0xffff;
1628                         else
1629                                 nescq->hw_cq.cq_number = nesvnic->mcrq_qp_id + nes_ucontext->mcrqf-1;
1630                         nescq->mcrqf = nes_ucontext->mcrqf;
1631                         nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1632                 }
1633                 nes_debug(NES_DBG_CQ, "CQ Virtual Address = %08lX, size = %u.\n",
1634                                 (unsigned long)req.user_cq_buffer, entries);
1635                 err = 1;
1636                 list_for_each_entry(nespbl, &nes_ucontext->cq_reg_mem_list, list) {
1637                         if (nespbl->user_base == (unsigned long )req.user_cq_buffer) {
1638                                 list_del(&nespbl->list);
1639                                 err = 0;
1640                                 nes_debug(NES_DBG_CQ, "Found PBL for virtual CQ. nespbl=%p.\n",
1641                                                 nespbl);
1642                                 break;
1643                         }
1644                 }
1645                 if (err) {
1646                         nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1647                         kfree(nescq);
1648                         return ERR_PTR(-EFAULT);
1649                 }
1650
1651                 pbl_entries = nespbl->pbl_size >> 3;
1652                 nescq->cq_mem_size = 0;
1653         } else {
1654                 nescq->cq_mem_size = nescq->hw_cq.cq_size * sizeof(struct nes_hw_cqe);
1655                 nes_debug(NES_DBG_CQ, "Attempting to allocate pci memory (%u entries, %u bytes) for CQ%u.\n",
1656                                 entries, nescq->cq_mem_size, nescq->hw_cq.cq_number);
1657
1658                 /* allocate the physical buffer space */
1659                 mem = pci_alloc_consistent(nesdev->pcidev, nescq->cq_mem_size,
1660                                 &nescq->hw_cq.cq_pbase);
1661                 if (!mem) {
1662                         printk(KERN_ERR PFX "Unable to allocate pci memory for cq\n");
1663                         nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1664                         kfree(nescq);
1665                         return ERR_PTR(-ENOMEM);
1666                 }
1667
1668                 memset(mem, 0, nescq->cq_mem_size);
1669                 nescq->hw_cq.cq_vbase = mem;
1670                 nescq->hw_cq.cq_head = 0;
1671                 nes_debug(NES_DBG_CQ, "CQ%u virtual address @ %p, phys = 0x%08X\n",
1672                                 nescq->hw_cq.cq_number, nescq->hw_cq.cq_vbase,
1673                                 (u32)nescq->hw_cq.cq_pbase);
1674         }
1675
1676         nescq->hw_cq.ce_handler = nes_iwarp_ce_handler;
1677         spin_lock_init(&nescq->lock);
1678
1679         /* send CreateCQ request to CQP */
1680         cqp_request = nes_get_cqp_request(nesdev);
1681         if (cqp_request == NULL) {
1682                 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1683                 if (!context)
1684                         pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1685                                         nescq->hw_cq.cq_pbase);
1686                 else {
1687                         pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1688                                             nespbl->pbl_vbase, nespbl->pbl_pbase);
1689                         kfree(nespbl);
1690                 }
1691
1692                 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1693                 kfree(nescq);
1694                 return ERR_PTR(-ENOMEM);
1695         }
1696         cqp_request->waiting = 1;
1697         cqp_wqe = &cqp_request->cqp_wqe;
1698
1699         opcode = NES_CQP_CREATE_CQ | NES_CQP_CQ_CEQ_VALID |
1700                         NES_CQP_CQ_CHK_OVERFLOW |
1701                         NES_CQP_CQ_CEQE_MASK | ((u32)nescq->hw_cq.cq_size << 16);
1702
1703         spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1704
1705         if (pbl_entries != 1) {
1706                 if (pbl_entries > 32) {
1707                         /* use 4k pbl */
1708                         nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 4k PBL\n", pbl_entries);
1709                         if (nesadapter->free_4kpbl == 0) {
1710                                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1711                                 nes_free_cqp_request(nesdev, cqp_request);
1712                                 if (!context)
1713                                         pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1714                                                         nescq->hw_cq.cq_pbase);
1715                                 else {
1716                                         pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1717                                                             nespbl->pbl_vbase, nespbl->pbl_pbase);
1718                                         kfree(nespbl);
1719                                 }
1720                                 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1721                                 kfree(nescq);
1722                                 return ERR_PTR(-ENOMEM);
1723                         } else {
1724                                 opcode |= (NES_CQP_CQ_VIRT | NES_CQP_CQ_4KB_CHUNK);
1725                                 nescq->virtual_cq = 2;
1726                                 nesadapter->free_4kpbl--;
1727                         }
1728                 } else {
1729                         /* use 256 byte pbl */
1730                         nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 256 byte PBL\n", pbl_entries);
1731                         if (nesadapter->free_256pbl == 0) {
1732                                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1733                                 nes_free_cqp_request(nesdev, cqp_request);
1734                                 if (!context)
1735                                         pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1736                                                         nescq->hw_cq.cq_pbase);
1737                                 else {
1738                                         pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1739                                                             nespbl->pbl_vbase, nespbl->pbl_pbase);
1740                                         kfree(nespbl);
1741                                 }
1742                                 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1743                                 kfree(nescq);
1744                                 return ERR_PTR(-ENOMEM);
1745                         } else {
1746                                 opcode |= NES_CQP_CQ_VIRT;
1747                                 nescq->virtual_cq = 1;
1748                                 nesadapter->free_256pbl--;
1749                         }
1750                 }
1751         }
1752
1753         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1754
1755         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1756         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1757         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1758                         (nescq->hw_cq.cq_number | ((u32)nesdev->ceq_index << 16)));
1759
1760         if (context) {
1761                 if (pbl_entries != 1)
1762                         u64temp = (u64)nespbl->pbl_pbase;
1763                 else
1764                         u64temp = le64_to_cpu(nespbl->pbl_vbase[0]);
1765                 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX,
1766                                 nes_ucontext->mmap_db_index[0]);
1767         } else {
1768                 u64temp = (u64)nescq->hw_cq.cq_pbase;
1769                 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX] = 0;
1770         }
1771         set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_PBL_LOW_IDX, u64temp);
1772         cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] = 0;
1773         u64temp = (u64)(unsigned long)&nescq->hw_cq;
1774         cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_LOW_IDX] =
1775                         cpu_to_le32((u32)(u64temp >> 1));
1776         cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] =
1777                         cpu_to_le32(((u32)((u64temp) >> 33)) & 0x7FFFFFFF);
1778
1779         atomic_set(&cqp_request->refcount, 2);
1780         nes_post_cqp_request(nesdev, cqp_request);
1781
1782         /* Wait for CQP */
1783         nes_debug(NES_DBG_CQ, "Waiting for create iWARP CQ%u to complete.\n",
1784                         nescq->hw_cq.cq_number);
1785         ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1786                         NES_EVENT_TIMEOUT * 2);
1787         nes_debug(NES_DBG_CQ, "Create iWARP CQ%u completed, wait_event_timeout ret = %d.\n",
1788                         nescq->hw_cq.cq_number, ret);
1789         if ((!ret) || (cqp_request->major_code)) {
1790                 nes_put_cqp_request(nesdev, cqp_request);
1791                 if (!context)
1792                         pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1793                                         nescq->hw_cq.cq_pbase);
1794                 else {
1795                         pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1796                                             nespbl->pbl_vbase, nespbl->pbl_pbase);
1797                         kfree(nespbl);
1798                 }
1799                 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1800                 kfree(nescq);
1801                 return ERR_PTR(-EIO);
1802         }
1803         nes_put_cqp_request(nesdev, cqp_request);
1804
1805         if (context) {
1806                 /* free the nespbl */
1807                 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1808                                 nespbl->pbl_pbase);
1809                 kfree(nespbl);
1810                 resp.cq_id = nescq->hw_cq.cq_number;
1811                 resp.cq_size = nescq->hw_cq.cq_size;
1812                 resp.mmap_db_index = 0;
1813                 if (ib_copy_to_udata(udata, &resp, sizeof resp)) {
1814                         nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1815                         kfree(nescq);
1816                         return ERR_PTR(-EFAULT);
1817                 }
1818         }
1819
1820         return &nescq->ibcq;
1821 }
1822
1823
1824 /**
1825  * nes_destroy_cq
1826  */
1827 static int nes_destroy_cq(struct ib_cq *ib_cq)
1828 {
1829         struct nes_cq *nescq;
1830         struct nes_device *nesdev;
1831         struct nes_vnic *nesvnic;
1832         struct nes_adapter *nesadapter;
1833         struct nes_hw_cqp_wqe *cqp_wqe;
1834         struct nes_cqp_request *cqp_request;
1835         unsigned long flags;
1836         u32 opcode = 0;
1837         int ret;
1838
1839         if (ib_cq == NULL)
1840                 return 0;
1841
1842         nescq = to_nescq(ib_cq);
1843         nesvnic = to_nesvnic(ib_cq->device);
1844         nesdev = nesvnic->nesdev;
1845         nesadapter = nesdev->nesadapter;
1846
1847         nes_debug(NES_DBG_CQ, "Destroy CQ%u\n", nescq->hw_cq.cq_number);
1848
1849         /* Send DestroyCQ request to CQP */
1850         cqp_request = nes_get_cqp_request(nesdev);
1851         if (cqp_request == NULL) {
1852                 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1853                 return -ENOMEM;
1854         }
1855         cqp_request->waiting = 1;
1856         cqp_wqe = &cqp_request->cqp_wqe;
1857         opcode = NES_CQP_DESTROY_CQ | (nescq->hw_cq.cq_size << 16);
1858         spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1859         if (nescq->virtual_cq == 1) {
1860                 nesadapter->free_256pbl++;
1861                 if (nesadapter->free_256pbl > nesadapter->max_256pbl) {
1862                         printk(KERN_ERR PFX "%s: free 256B PBLs(%u) has exceeded the max(%u)\n",
1863                                         __func__, nesadapter->free_256pbl, nesadapter->max_256pbl);
1864                 }
1865         } else if (nescq->virtual_cq == 2) {
1866                 nesadapter->free_4kpbl++;
1867                 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl) {
1868                         printk(KERN_ERR PFX "%s: free 4K PBLs(%u) has exceeded the max(%u)\n",
1869                                         __func__, nesadapter->free_4kpbl, nesadapter->max_4kpbl);
1870                 }
1871                 opcode |= NES_CQP_CQ_4KB_CHUNK;
1872         }
1873
1874         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1875
1876         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1877         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1878         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1879                 (nescq->hw_cq.cq_number | ((u32)PCI_FUNC(nesdev->pcidev->devfn) << 16)));
1880         if (!nescq->mcrqf)
1881                 nes_free_resource(nesadapter, nesadapter->allocated_cqs, nescq->hw_cq.cq_number);
1882
1883         atomic_set(&cqp_request->refcount, 2);
1884         nes_post_cqp_request(nesdev, cqp_request);
1885
1886         /* Wait for CQP */
1887         nes_debug(NES_DBG_CQ, "Waiting for destroy iWARP CQ%u to complete.\n",
1888                         nescq->hw_cq.cq_number);
1889         ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1890                         NES_EVENT_TIMEOUT);
1891         nes_debug(NES_DBG_CQ, "Destroy iWARP CQ%u completed, wait_event_timeout ret = %u,"
1892                         " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1893                         nescq->hw_cq.cq_number, ret, cqp_request->major_code,
1894                         cqp_request->minor_code);
1895         if (!ret) {
1896                 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy timeout expired\n",
1897                                         nescq->hw_cq.cq_number);
1898                 ret = -ETIME;
1899         } else if (cqp_request->major_code) {
1900                 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy failed\n",
1901                                         nescq->hw_cq.cq_number);
1902                 ret = -EIO;
1903         } else {
1904                 ret = 0;
1905         }
1906         nes_put_cqp_request(nesdev, cqp_request);
1907
1908         if (nescq->cq_mem_size)
1909                 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size,
1910                                     nescq->hw_cq.cq_vbase, nescq->hw_cq.cq_pbase);
1911         kfree(nescq);
1912
1913         return ret;
1914 }
1915
1916 /**
1917  * root_256
1918  */
1919 static u32 root_256(struct nes_device *nesdev,
1920                     struct nes_root_vpbl *root_vpbl,
1921                     struct nes_root_vpbl *new_root,
1922                     u16 pbl_count_4k)
1923 {
1924         u64 leaf_pbl;
1925         int i, j, k;
1926
1927         if (pbl_count_4k == 1) {
1928                 new_root->pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
1929                                                 512, &new_root->pbl_pbase);
1930
1931                 if (new_root->pbl_vbase == NULL)
1932                         return 0;
1933
1934                 leaf_pbl = (u64)root_vpbl->pbl_pbase;
1935                 for (i = 0; i < 16; i++) {
1936                         new_root->pbl_vbase[i].pa_low =
1937                                 cpu_to_le32((u32)leaf_pbl);
1938                         new_root->pbl_vbase[i].pa_high =
1939                                 cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
1940                         leaf_pbl += 256;
1941                 }
1942         } else {
1943                 for (i = 3; i >= 0; i--) {
1944                         j = i * 16;
1945                         root_vpbl->pbl_vbase[j] = root_vpbl->pbl_vbase[i];
1946                         leaf_pbl = le32_to_cpu(root_vpbl->pbl_vbase[j].pa_low) +
1947                             (((u64)le32_to_cpu(root_vpbl->pbl_vbase[j].pa_high))
1948                                 << 32);
1949                         for (k = 1; k < 16; k++) {
1950                                 leaf_pbl += 256;
1951                                 root_vpbl->pbl_vbase[j + k].pa_low =
1952                                                 cpu_to_le32((u32)leaf_pbl);
1953                                 root_vpbl->pbl_vbase[j + k].pa_high =
1954                                     cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
1955                         }
1956                 }
1957         }
1958
1959         return 1;
1960 }
1961
1962
1963 /**
1964  * nes_reg_mr
1965  */
1966 static int nes_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd,
1967                 u32 stag, u64 region_length, struct nes_root_vpbl *root_vpbl,
1968                 dma_addr_t single_buffer, u16 pbl_count_4k,
1969                 u16 residual_page_count_4k, int acc, u64 *iova_start,
1970                 u16 *actual_pbl_cnt, u8 *used_4k_pbls)
1971 {
1972         struct nes_hw_cqp_wqe *cqp_wqe;
1973         struct nes_cqp_request *cqp_request;
1974         unsigned long flags;
1975         int ret;
1976         struct nes_adapter *nesadapter = nesdev->nesadapter;
1977         uint pg_cnt = 0;
1978         u16 pbl_count_256 = 0;
1979         u16 pbl_count = 0;
1980         u8  use_256_pbls = 0;
1981         u8  use_4k_pbls = 0;
1982         u16 use_two_level = (pbl_count_4k > 1) ? 1 : 0;
1983         struct nes_root_vpbl new_root = {0, 0, 0};
1984         u32 opcode = 0;
1985         u16 major_code;
1986
1987         /* Register the region with the adapter */
1988         cqp_request = nes_get_cqp_request(nesdev);
1989         if (cqp_request == NULL) {
1990                 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
1991                 return -ENOMEM;
1992         }
1993         cqp_request->waiting = 1;
1994         cqp_wqe = &cqp_request->cqp_wqe;
1995
1996         if (pbl_count_4k) {
1997                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1998
1999                 pg_cnt = ((pbl_count_4k - 1) * 512) + residual_page_count_4k;
2000                 pbl_count_256 = (pg_cnt + 31) / 32;
2001                 if (pg_cnt <= 32) {
2002                         if (pbl_count_256 <= nesadapter->free_256pbl)
2003                                 use_256_pbls = 1;
2004                         else if (pbl_count_4k <= nesadapter->free_4kpbl)
2005                                 use_4k_pbls = 1;
2006                 } else if (pg_cnt <= 2048) {
2007                         if (((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) &&
2008                             (nesadapter->free_4kpbl > (nesadapter->max_4kpbl >> 1))) {
2009                                 use_4k_pbls = 1;
2010                         } else if ((pbl_count_256 + 1) <= nesadapter->free_256pbl) {
2011                                 use_256_pbls = 1;
2012                                 use_two_level = 1;
2013                         } else if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
2014                                 use_4k_pbls = 1;
2015                         }
2016                 } else {
2017                         if ((pbl_count_4k + 1) <= nesadapter->free_4kpbl)
2018                                 use_4k_pbls = 1;
2019                 }
2020
2021                 if (use_256_pbls) {
2022                         pbl_count = pbl_count_256;
2023                         nesadapter->free_256pbl -= pbl_count + use_two_level;
2024                 } else if (use_4k_pbls) {
2025                         pbl_count =  pbl_count_4k;
2026                         nesadapter->free_4kpbl -= pbl_count + use_two_level;
2027                 } else {
2028                         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2029                         nes_debug(NES_DBG_MR, "Out of Pbls\n");
2030                         nes_free_cqp_request(nesdev, cqp_request);
2031                         return -ENOMEM;
2032                 }
2033
2034                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2035         }
2036
2037         if (use_256_pbls && use_two_level) {
2038                 if (root_256(nesdev, root_vpbl, &new_root, pbl_count_4k) == 1) {
2039                         if (new_root.pbl_pbase != 0)
2040                                 root_vpbl = &new_root;
2041                 } else {
2042                         spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2043                         nesadapter->free_256pbl += pbl_count_256 + use_two_level;
2044                         use_256_pbls = 0;
2045
2046                         if (pbl_count_4k == 1)
2047                                 use_two_level = 0;
2048                         pbl_count = pbl_count_4k;
2049
2050                         if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
2051                                 nesadapter->free_4kpbl -= pbl_count + use_two_level;
2052                                 use_4k_pbls = 1;
2053                         }
2054                         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2055
2056                         if (use_4k_pbls == 0)
2057                                 return -ENOMEM;
2058                 }
2059         }
2060
2061         opcode = NES_CQP_REGISTER_STAG | NES_CQP_STAG_RIGHTS_LOCAL_READ |
2062                                         NES_CQP_STAG_VA_TO | NES_CQP_STAG_MR;
2063         if (acc & IB_ACCESS_LOCAL_WRITE)
2064                 opcode |= NES_CQP_STAG_RIGHTS_LOCAL_WRITE;
2065         if (acc & IB_ACCESS_REMOTE_WRITE)
2066                 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_REM_ACC_EN;
2067         if (acc & IB_ACCESS_REMOTE_READ)
2068                 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_READ | NES_CQP_STAG_REM_ACC_EN;
2069         if (acc & IB_ACCESS_MW_BIND)
2070                 opcode |= NES_CQP_STAG_RIGHTS_WINDOW_BIND | NES_CQP_STAG_REM_ACC_EN;
2071
2072         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2073         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
2074         set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, *iova_start);
2075         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, region_length);
2076
2077         cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] =
2078                         cpu_to_le32((u32)(region_length >> 8) & 0xff000000);
2079         cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |=
2080                         cpu_to_le32(nespd->pd_id & 0x00007fff);
2081         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
2082
2083         if (pbl_count == 0) {
2084                 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, single_buffer);
2085         } else {
2086                 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, root_vpbl->pbl_pbase);
2087                 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, pbl_count);
2088                 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX, (pg_cnt * 8));
2089
2090                 if (use_4k_pbls)
2091                         cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE);
2092         }
2093         barrier();
2094
2095         atomic_set(&cqp_request->refcount, 2);
2096         nes_post_cqp_request(nesdev, cqp_request);
2097
2098         /* Wait for CQP */
2099         ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
2100                         NES_EVENT_TIMEOUT);
2101         nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
2102                         " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2103                         stag, ret, cqp_request->major_code, cqp_request->minor_code);
2104         major_code = cqp_request->major_code;
2105         nes_put_cqp_request(nesdev, cqp_request);
2106
2107         if ((!ret || major_code) && pbl_count != 0) {
2108                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2109                 if (use_256_pbls)
2110                         nesadapter->free_256pbl += pbl_count + use_two_level;
2111                 else if (use_4k_pbls)
2112                         nesadapter->free_4kpbl += pbl_count + use_two_level;
2113                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2114         }
2115         if (new_root.pbl_pbase)
2116                 pci_free_consistent(nesdev->pcidev, 512, new_root.pbl_vbase,
2117                                     new_root.pbl_pbase);
2118
2119         if (!ret)
2120                 return -ETIME;
2121         else if (major_code)
2122                 return -EIO;
2123
2124         *actual_pbl_cnt = pbl_count + use_two_level;
2125         *used_4k_pbls = use_4k_pbls;
2126         return 0;
2127 }
2128
2129
2130 /**
2131  * nes_reg_phys_mr
2132  */
2133 static struct ib_mr *nes_reg_phys_mr(struct ib_pd *ib_pd,
2134                 struct ib_phys_buf *buffer_list, int num_phys_buf, int acc,
2135                 u64 * iova_start)
2136 {
2137         u64 region_length;
2138         struct nes_pd *nespd = to_nespd(ib_pd);
2139         struct nes_vnic *nesvnic = to_nesvnic(ib_pd->device);
2140         struct nes_device *nesdev = nesvnic->nesdev;
2141         struct nes_adapter *nesadapter = nesdev->nesadapter;
2142         struct nes_mr *nesmr;
2143         struct ib_mr *ibmr;
2144         struct nes_vpbl vpbl;
2145         struct nes_root_vpbl root_vpbl;
2146         u32 stag;
2147         u32 i;
2148         unsigned long mask;
2149         u32 stag_index = 0;
2150         u32 next_stag_index = 0;
2151         u32 driver_key = 0;
2152         u32 root_pbl_index = 0;
2153         u32 cur_pbl_index = 0;
2154         int err = 0, pbl_depth = 0;
2155         int ret = 0;
2156         u16 pbl_count = 0;
2157         u8 single_page = 1;
2158         u8 stag_key = 0;
2159
2160         pbl_depth = 0;
2161         region_length = 0;
2162         vpbl.pbl_vbase = NULL;
2163         root_vpbl.pbl_vbase = NULL;
2164         root_vpbl.pbl_pbase = 0;
2165
2166         get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2167         stag_key = (u8)next_stag_index;
2168
2169         driver_key = 0;
2170
2171         next_stag_index >>= 8;
2172         next_stag_index %= nesadapter->max_mr;
2173         if (num_phys_buf > (1024*512)) {
2174                 return ERR_PTR(-E2BIG);
2175         }
2176
2177         if ((buffer_list[0].addr ^ *iova_start) & ~PAGE_MASK)
2178                 return ERR_PTR(-EINVAL);
2179
2180         err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs, nesadapter->max_mr,
2181                         &stag_index, &next_stag_index);
2182         if (err) {
2183                 return ERR_PTR(err);
2184         }
2185
2186         nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2187         if (!nesmr) {
2188                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2189                 return ERR_PTR(-ENOMEM);
2190         }
2191
2192         for (i = 0; i < num_phys_buf; i++) {
2193
2194                 if ((i & 0x01FF) == 0) {
2195                         if (root_pbl_index == 1) {
2196                                 /* Allocate the root PBL */
2197                                 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 8192,
2198                                                 &root_vpbl.pbl_pbase);
2199                                 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2200                                                 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2201                                 if (!root_vpbl.pbl_vbase) {
2202                                         pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2203                                                         vpbl.pbl_pbase);
2204                                         nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2205                                         kfree(nesmr);
2206                                         return ERR_PTR(-ENOMEM);
2207                                 }
2208                                 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024, GFP_KERNEL);
2209                                 if (!root_vpbl.leaf_vpbl) {
2210                                         pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2211                                                         root_vpbl.pbl_pbase);
2212                                         pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2213                                                         vpbl.pbl_pbase);
2214                                         nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2215                                         kfree(nesmr);
2216                                         return ERR_PTR(-ENOMEM);
2217                                 }
2218                                 root_vpbl.pbl_vbase[0].pa_low = cpu_to_le32((u32)vpbl.pbl_pbase);
2219                                 root_vpbl.pbl_vbase[0].pa_high =
2220                                                 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2221                                 root_vpbl.leaf_vpbl[0] = vpbl;
2222                         }
2223                         /* Allocate a 4K buffer for the PBL */
2224                         vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2225                                         &vpbl.pbl_pbase);
2226                         nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%016lX\n",
2227                                         vpbl.pbl_vbase, (unsigned long)vpbl.pbl_pbase);
2228                         if (!vpbl.pbl_vbase) {
2229                                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2230                                 ibmr = ERR_PTR(-ENOMEM);
2231                                 kfree(nesmr);
2232                                 goto reg_phys_err;
2233                         }
2234                         /* Fill in the root table */
2235                         if (1 <= root_pbl_index) {
2236                                 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2237                                                 cpu_to_le32((u32)vpbl.pbl_pbase);
2238                                 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2239                                                 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2240                                 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2241                         }
2242                         root_pbl_index++;
2243                         cur_pbl_index = 0;
2244                 }
2245
2246                 mask = !buffer_list[i].size;
2247                 if (i != 0)
2248                         mask |= buffer_list[i].addr;
2249                 if (i != num_phys_buf - 1)
2250                         mask |= buffer_list[i].addr + buffer_list[i].size;
2251
2252                 if (mask & ~PAGE_MASK) {
2253                         nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2254                         nes_debug(NES_DBG_MR, "Invalid buffer addr or size\n");
2255                         ibmr = ERR_PTR(-EINVAL);
2256                         kfree(nesmr);
2257                         goto reg_phys_err;
2258                 }
2259
2260                 region_length += buffer_list[i].size;
2261                 if ((i != 0) && (single_page)) {
2262                         if ((buffer_list[i-1].addr+PAGE_SIZE) != buffer_list[i].addr)
2263                                 single_page = 0;
2264                 }
2265                 vpbl.pbl_vbase[cur_pbl_index].pa_low = cpu_to_le32((u32)buffer_list[i].addr & PAGE_MASK);
2266                 vpbl.pbl_vbase[cur_pbl_index++].pa_high =
2267                                 cpu_to_le32((u32)((((u64)buffer_list[i].addr) >> 32)));
2268         }
2269
2270         stag = stag_index << 8;
2271         stag |= driver_key;
2272         stag += (u32)stag_key;
2273
2274         nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%016lX,"
2275                         " length = 0x%016lX, index = 0x%08X\n",
2276                         stag, (unsigned long)*iova_start, (unsigned long)region_length, stag_index);
2277
2278         /* Make the leaf PBL the root if only one PBL */
2279         if (root_pbl_index == 1) {
2280                 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2281         }
2282
2283         if (single_page) {
2284                 pbl_count = 0;
2285         } else {
2286                 pbl_count = root_pbl_index;
2287         }
2288         ret = nes_reg_mr(nesdev, nespd, stag, region_length, &root_vpbl,
2289                         buffer_list[0].addr, pbl_count, (u16)cur_pbl_index, acc, iova_start,
2290                         &nesmr->pbls_used, &nesmr->pbl_4k);
2291
2292         if (ret == 0) {
2293                 nesmr->ibmr.rkey = stag;
2294                 nesmr->ibmr.lkey = stag;
2295                 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2296                 ibmr = &nesmr->ibmr;
2297         } else {
2298                 kfree(nesmr);
2299                 ibmr = ERR_PTR(-ENOMEM);
2300         }
2301
2302         reg_phys_err:
2303         /* free the resources */
2304         if (root_pbl_index == 1) {
2305                 /* single PBL case */
2306                 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, vpbl.pbl_pbase);
2307         } else {
2308                 for (i=0; i<root_pbl_index; i++) {
2309                         pci_free_consistent(nesdev->pcidev, 4096, root_vpbl.leaf_vpbl[i].pbl_vbase,
2310                                         root_vpbl.leaf_vpbl[i].pbl_pbase);
2311                 }
2312                 kfree(root_vpbl.leaf_vpbl);
2313                 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2314                                 root_vpbl.pbl_pbase);
2315         }
2316
2317         return ibmr;
2318 }
2319
2320
2321 /**
2322  * nes_get_dma_mr
2323  */
2324 static struct ib_mr *nes_get_dma_mr(struct ib_pd *pd, int acc)
2325 {
2326         struct ib_phys_buf bl;
2327         u64 kva = 0;
2328
2329         nes_debug(NES_DBG_MR, "\n");
2330
2331         bl.size = (u64)0xffffffffffULL;
2332         bl.addr = 0;
2333         return nes_reg_phys_mr(pd, &bl, 1, acc, &kva);
2334 }
2335
2336
2337 /**
2338  * nes_reg_user_mr
2339  */
2340 static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
2341                 u64 virt, int acc, struct ib_udata *udata)
2342 {
2343         u64 iova_start;
2344         __le64 *pbl;
2345         u64 region_length;
2346         dma_addr_t last_dma_addr = 0;
2347         dma_addr_t first_dma_addr = 0;
2348         struct nes_pd *nespd = to_nespd(pd);
2349         struct nes_vnic *nesvnic = to_nesvnic(pd->device);
2350         struct nes_device *nesdev = nesvnic->nesdev;
2351         struct nes_adapter *nesadapter = nesdev->nesadapter;
2352         struct ib_mr *ibmr = ERR_PTR(-EINVAL);
2353         struct ib_umem_chunk *chunk;
2354         struct nes_ucontext *nes_ucontext;
2355         struct nes_pbl *nespbl;
2356         struct nes_mr *nesmr;
2357         struct ib_umem *region;
2358         struct nes_mem_reg_req req;
2359         struct nes_vpbl vpbl;
2360         struct nes_root_vpbl root_vpbl;
2361         int nmap_index, page_index;
2362         int page_count = 0;
2363         int err, pbl_depth = 0;
2364         int chunk_pages;
2365         int ret;
2366         u32 stag;
2367         u32 stag_index = 0;
2368         u32 next_stag_index;
2369         u32 driver_key;
2370         u32 root_pbl_index = 0;
2371         u32 cur_pbl_index = 0;
2372         u32 skip_pages;
2373         u16 pbl_count;
2374         u8 single_page = 1;
2375         u8 stag_key;
2376
2377         region = ib_umem_get(pd->uobject->context, start, length, acc, 0);
2378         if (IS_ERR(region)) {
2379                 return (struct ib_mr *)region;
2380         }
2381
2382         nes_debug(NES_DBG_MR, "User base = 0x%lX, Virt base = 0x%lX, length = %u,"
2383                         " offset = %u, page size = %u.\n",
2384                         (unsigned long int)start, (unsigned long int)virt, (u32)length,
2385                         region->offset, region->page_size);
2386
2387         skip_pages = ((u32)region->offset) >> 12;
2388
2389         if (ib_copy_from_udata(&req, udata, sizeof(req)))
2390                 return ERR_PTR(-EFAULT);
2391         nes_debug(NES_DBG_MR, "Memory Registration type = %08X.\n", req.reg_type);
2392
2393         switch (req.reg_type) {
2394                 case IWNES_MEMREG_TYPE_MEM:
2395                         pbl_depth = 0;
2396                         region_length = 0;
2397                         vpbl.pbl_vbase = NULL;
2398                         root_vpbl.pbl_vbase = NULL;
2399                         root_vpbl.pbl_pbase = 0;
2400
2401                         get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2402                         stag_key = (u8)next_stag_index;
2403
2404                         driver_key = next_stag_index & 0x70000000;
2405
2406                         next_stag_index >>= 8;
2407                         next_stag_index %= nesadapter->max_mr;
2408
2409                         err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
2410                                         nesadapter->max_mr, &stag_index, &next_stag_index);
2411                         if (err) {
2412                                 ib_umem_release(region);
2413                                 return ERR_PTR(err);
2414                         }
2415
2416                         nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2417                         if (!nesmr) {
2418                                 ib_umem_release(region);
2419                                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2420                                 return ERR_PTR(-ENOMEM);
2421                         }
2422                         nesmr->region = region;
2423
2424                         list_for_each_entry(chunk, &region->chunk_list, list) {
2425                                 nes_debug(NES_DBG_MR, "Chunk: nents = %u, nmap = %u .\n",
2426                                                 chunk->nents, chunk->nmap);
2427                                 for (nmap_index = 0; nmap_index < chunk->nmap; ++nmap_index) {
2428                                         if (sg_dma_address(&chunk->page_list[nmap_index]) & ~PAGE_MASK) {
2429                                                 ib_umem_release(region);
2430                                                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2431                                                 nes_debug(NES_DBG_MR, "Unaligned Memory Buffer: 0x%x\n",
2432                                                                 (unsigned int) sg_dma_address(&chunk->page_list[nmap_index]));
2433                                                 ibmr = ERR_PTR(-EINVAL);
2434                                                 kfree(nesmr);
2435                                                 goto reg_user_mr_err;
2436                                         }
2437
2438                                         if (!sg_dma_len(&chunk->page_list[nmap_index])) {
2439                                                 ib_umem_release(region);
2440                                                 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2441                                                                 stag_index);
2442                                                 nes_debug(NES_DBG_MR, "Invalid Buffer Size\n");
2443                                                 ibmr = ERR_PTR(-EINVAL);
2444                                                 kfree(nesmr);
2445                                                 goto reg_user_mr_err;
2446                                         }
2447
2448                                         region_length += sg_dma_len(&chunk->page_list[nmap_index]);
2449                                         chunk_pages = sg_dma_len(&chunk->page_list[nmap_index]) >> 12;
2450                                         region_length -= skip_pages << 12;
2451                                         for (page_index=skip_pages; page_index < chunk_pages; page_index++) {
2452                                                 skip_pages = 0;
2453                                                 if ((page_count!=0)&&(page_count<<12)-(region->offset&(4096-1))>=region->length)
2454                                                         goto enough_pages;
2455                                                 if ((page_count&0x01FF) == 0) {
2456                                                         if (page_count >= 1024 * 512) {
2457                                                                 ib_umem_release(region);
2458                                                                 nes_free_resource(nesadapter,
2459                                                                                 nesadapter->allocated_mrs, stag_index);
2460                                                                 kfree(nesmr);
2461                                                                 ibmr = ERR_PTR(-E2BIG);
2462                                                                 goto reg_user_mr_err;
2463                                                         }
2464                                                         if (root_pbl_index == 1) {
2465                                                                 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
2466                                                                                 8192, &root_vpbl.pbl_pbase);
2467                                                                 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2468                                                                                 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2469                                                                 if (!root_vpbl.pbl_vbase) {
2470                                                                         ib_umem_release(region);
2471                                                                         pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2472                                                                                         vpbl.pbl_pbase);
2473                                                                         nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2474                                                                                         stag_index);
2475                                                                         kfree(nesmr);
2476                                                                         ibmr = ERR_PTR(-ENOMEM);
2477                                                                         goto reg_user_mr_err;
2478                                                                 }
2479                                                                 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024,
2480                                                                                 GFP_KERNEL);
2481                                                                 if (!root_vpbl.leaf_vpbl) {
2482                                                                         ib_umem_release(region);
2483                                                                         pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2484                                                                                         root_vpbl.pbl_pbase);
2485                                                                         pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2486                                                                                         vpbl.pbl_pbase);
2487                                                                         nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2488                                                                                         stag_index);
2489                                                                         kfree(nesmr);
2490                                                                         ibmr = ERR_PTR(-ENOMEM);
2491                                                                         goto reg_user_mr_err;
2492                                                                 }
2493                                                                 root_vpbl.pbl_vbase[0].pa_low =
2494                                                                                 cpu_to_le32((u32)vpbl.pbl_pbase);
2495                                                                 root_vpbl.pbl_vbase[0].pa_high =
2496                                                                                 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2497                                                                 root_vpbl.leaf_vpbl[0] = vpbl;
2498                                                         }
2499                                                         vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2500                                                                         &vpbl.pbl_pbase);
2501                                                         nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%08X\n",
2502                                                                         vpbl.pbl_vbase, (unsigned int)vpbl.pbl_pbase);
2503                                                         if (!vpbl.pbl_vbase) {
2504                                                                 ib_umem_release(region);
2505                                                                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2506                                                                 ibmr = ERR_PTR(-ENOMEM);
2507                                                                 kfree(nesmr);
2508                                                                 goto reg_user_mr_err;
2509                                                         }
2510                                                         if (1 <= root_pbl_index) {
2511                                                                 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2512                                                                                 cpu_to_le32((u32)vpbl.pbl_pbase);
2513                                                                 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2514                                                                                 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase)>>32)));
2515                                                                 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2516                                                         }
2517                                                         root_pbl_index++;
2518                                                         cur_pbl_index = 0;
2519                                                 }
2520                                                 if (single_page) {
2521                                                         if (page_count != 0) {
2522                                                                 if ((last_dma_addr+4096) !=
2523                                                                                 (sg_dma_address(&chunk->page_list[nmap_index])+
2524                                                                                 (page_index*4096)))
2525                                                                         single_page = 0;
2526                                                                 last_dma_addr = sg_dma_address(&chunk->page_list[nmap_index])+
2527                                                                                 (page_index*4096);
2528                                                         } else {
2529                                                                 first_dma_addr = sg_dma_address(&chunk->page_list[nmap_index])+
2530                                                                                 (page_index*4096);
2531                                                                 last_dma_addr = first_dma_addr;
2532                                                         }
2533                                                 }
2534
2535                                                 vpbl.pbl_vbase[cur_pbl_index].pa_low =
2536                                                                 cpu_to_le32((u32)(sg_dma_address(&chunk->page_list[nmap_index])+
2537                                                                 (page_index*4096)));
2538                                                 vpbl.pbl_vbase[cur_pbl_index].pa_high =
2539                                                                 cpu_to_le32((u32)((((u64)(sg_dma_address(&chunk->page_list[nmap_index])+
2540                                                                 (page_index*4096))) >> 32)));
2541                                                 cur_pbl_index++;
2542                                                 page_count++;
2543                                         }
2544                                 }
2545                         }
2546                         enough_pages:
2547                         nes_debug(NES_DBG_MR, "calculating stag, stag_index=0x%08x, driver_key=0x%08x,"
2548                                         " stag_key=0x%08x\n",
2549                                         stag_index, driver_key, stag_key);
2550                         stag = stag_index << 8;
2551                         stag |= driver_key;
2552                         stag += (u32)stag_key;
2553                         if (stag == 0) {
2554                                 stag = 1;
2555                         }
2556
2557                         iova_start = virt;
2558                         /* Make the leaf PBL the root if only one PBL */
2559                         if (root_pbl_index == 1) {
2560                                 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2561                         }
2562
2563                         if (single_page) {
2564                                 pbl_count = 0;
2565                         } else {
2566                                 pbl_count = root_pbl_index;
2567                                 first_dma_addr = 0;
2568                         }
2569                         nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%08X, length = 0x%08X,"
2570                                         " index = 0x%08X, region->length=0x%08llx, pbl_count = %u\n",
2571                                         stag, (unsigned int)iova_start,
2572                                         (unsigned int)region_length, stag_index,
2573                                         (unsigned long long)region->length, pbl_count);
2574                         ret = nes_reg_mr(nesdev, nespd, stag, region->length, &root_vpbl,
2575                                          first_dma_addr, pbl_count, (u16)cur_pbl_index, acc,
2576                                          &iova_start, &nesmr->pbls_used, &nesmr->pbl_4k);
2577
2578                         nes_debug(NES_DBG_MR, "ret=%d\n", ret);
2579
2580                         if (ret == 0) {
2581                                 nesmr->ibmr.rkey = stag;
2582                                 nesmr->ibmr.lkey = stag;
2583                                 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2584                                 ibmr = &nesmr->ibmr;
2585                         } else {
2586                                 ib_umem_release(region);
2587                                 kfree(nesmr);
2588                                 ibmr = ERR_PTR(-ENOMEM);
2589                         }
2590
2591                         reg_user_mr_err:
2592                         /* free the resources */
2593                         if (root_pbl_index == 1) {
2594                                 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2595                                                 vpbl.pbl_pbase);
2596                         } else {
2597                                 for (page_index=0; page_index<root_pbl_index; page_index++) {
2598                                         pci_free_consistent(nesdev->pcidev, 4096,
2599                                                         root_vpbl.leaf_vpbl[page_index].pbl_vbase,
2600                                                         root_vpbl.leaf_vpbl[page_index].pbl_pbase);
2601                                 }
2602                                 kfree(root_vpbl.leaf_vpbl);
2603                                 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2604                                                 root_vpbl.pbl_pbase);
2605                         }
2606
2607                         nes_debug(NES_DBG_MR, "Leaving, ibmr=%p", ibmr);
2608
2609                         return ibmr;
2610                 case IWNES_MEMREG_TYPE_QP:
2611                 case IWNES_MEMREG_TYPE_CQ:
2612                         nespbl = kzalloc(sizeof(*nespbl), GFP_KERNEL);
2613                         if (!nespbl) {
2614                                 nes_debug(NES_DBG_MR, "Unable to allocate PBL\n");
2615                                 ib_umem_release(region);
2616                                 return ERR_PTR(-ENOMEM);
2617                         }
2618                         nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2619                         if (!nesmr) {
2620                                 ib_umem_release(region);
2621                                 kfree(nespbl);
2622                                 nes_debug(NES_DBG_MR, "Unable to allocate nesmr\n");
2623                                 return ERR_PTR(-ENOMEM);
2624                         }
2625                         nesmr->region = region;
2626                         nes_ucontext = to_nesucontext(pd->uobject->context);
2627                         pbl_depth = region->length >> 12;
2628                         pbl_depth += (region->length & (4096-1)) ? 1 : 0;
2629                         nespbl->pbl_size = pbl_depth*sizeof(u64);
2630                         if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2631                                 nes_debug(NES_DBG_MR, "Attempting to allocate QP PBL memory");
2632                         } else {
2633                                 nes_debug(NES_DBG_MR, "Attempting to allocate CP PBL memory");
2634                         }
2635
2636                         nes_debug(NES_DBG_MR, " %u bytes, %u entries.\n",
2637                                         nespbl->pbl_size, pbl_depth);
2638                         pbl = pci_alloc_consistent(nesdev->pcidev, nespbl->pbl_size,
2639                                         &nespbl->pbl_pbase);
2640                         if (!pbl) {
2641                                 ib_umem_release(region);
2642                                 kfree(nesmr);
2643                                 kfree(nespbl);
2644                                 nes_debug(NES_DBG_MR, "Unable to allocate PBL memory\n");
2645                                 return ERR_PTR(-ENOMEM);
2646                         }
2647
2648                         nespbl->pbl_vbase = (u64 *)pbl;
2649                         nespbl->user_base = start;
2650                         nes_debug(NES_DBG_MR, "Allocated PBL memory, %u bytes, pbl_pbase=%lx,"
2651                                         " pbl_vbase=%p user_base=0x%lx\n",
2652                                   nespbl->pbl_size, (unsigned long) nespbl->pbl_pbase,
2653                                   (void *) nespbl->pbl_vbase, nespbl->user_base);
2654
2655                         list_for_each_entry(chunk, &region->chunk_list, list) {
2656                                 for (nmap_index = 0; nmap_index < chunk->nmap; ++nmap_index) {
2657                                         chunk_pages = sg_dma_len(&chunk->page_list[nmap_index]) >> 12;
2658                                         chunk_pages += (sg_dma_len(&chunk->page_list[nmap_index]) & (4096-1)) ? 1 : 0;
2659                                         nespbl->page = sg_page(&chunk->page_list[0]);
2660                                         for (page_index=0; page_index<chunk_pages; page_index++) {
2661                                                 ((__le32 *)pbl)[0] = cpu_to_le32((u32)
2662                                                                 (sg_dma_address(&chunk->page_list[nmap_index])+
2663                                                                 (page_index*4096)));
2664                                                 ((__le32 *)pbl)[1] = cpu_to_le32(((u64)
2665                                                                 (sg_dma_address(&chunk->page_list[nmap_index])+
2666                                                                 (page_index*4096)))>>32);
2667                                                 nes_debug(NES_DBG_MR, "pbl=%p, *pbl=0x%016llx, 0x%08x%08x\n", pbl,
2668                                                                 (unsigned long long)*pbl,
2669                                                                 le32_to_cpu(((__le32 *)pbl)[1]), le32_to_cpu(((__le32 *)pbl)[0]));
2670                                                 pbl++;
2671                                         }
2672                                 }
2673                         }
2674                         if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2675                                 list_add_tail(&nespbl->list, &nes_ucontext->qp_reg_mem_list);
2676                         } else {
2677                                 list_add_tail(&nespbl->list, &nes_ucontext->cq_reg_mem_list);
2678                         }
2679                         nesmr->ibmr.rkey = -1;
2680                         nesmr->ibmr.lkey = -1;
2681                         nesmr->mode = req.reg_type;
2682                         return &nesmr->ibmr;
2683         }
2684
2685         return ERR_PTR(-ENOSYS);
2686 }
2687
2688
2689 /**
2690  * nes_dereg_mr
2691  */
2692 static int nes_dereg_mr(struct ib_mr *ib_mr)
2693 {
2694         struct nes_mr *nesmr = to_nesmr(ib_mr);
2695         struct nes_vnic *nesvnic = to_nesvnic(ib_mr->device);
2696         struct nes_device *nesdev = nesvnic->nesdev;
2697         struct nes_adapter *nesadapter = nesdev->nesadapter;
2698         struct nes_hw_cqp_wqe *cqp_wqe;
2699         struct nes_cqp_request *cqp_request;
2700         unsigned long flags;
2701         int ret;
2702         u16 major_code;
2703         u16 minor_code;
2704
2705         if (nesmr->region) {
2706                 ib_umem_release(nesmr->region);
2707         }
2708         if (nesmr->mode != IWNES_MEMREG_TYPE_MEM) {
2709                 kfree(nesmr);
2710                 return 0;
2711         }
2712
2713         /* Deallocate the region with the adapter */
2714
2715         cqp_request = nes_get_cqp_request(nesdev);
2716         if (cqp_request == NULL) {
2717                 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
2718                 return -ENOMEM;
2719         }
2720         cqp_request->waiting = 1;
2721         cqp_wqe = &cqp_request->cqp_wqe;
2722
2723         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2724         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2725                         NES_CQP_DEALLOCATE_STAG | NES_CQP_STAG_VA_TO |
2726                         NES_CQP_STAG_DEALLOC_PBLS | NES_CQP_STAG_MR);
2727         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ib_mr->rkey);
2728
2729         atomic_set(&cqp_request->refcount, 2);
2730         nes_post_cqp_request(nesdev, cqp_request);
2731
2732         /* Wait for CQP */
2733         nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X completed\n", ib_mr->rkey);
2734         ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2735                         NES_EVENT_TIMEOUT);
2736         nes_debug(NES_DBG_MR, "Deallocate STag 0x%08X completed, wait_event_timeout ret = %u,"
2737                         " CQP Major:Minor codes = 0x%04X:0x%04X\n",
2738                         ib_mr->rkey, ret, cqp_request->major_code, cqp_request->minor_code);
2739
2740         major_code = cqp_request->major_code;
2741         minor_code = cqp_request->minor_code;
2742
2743         nes_put_cqp_request(nesdev, cqp_request);
2744
2745         if (!ret) {
2746                 nes_debug(NES_DBG_MR, "Timeout waiting to destroy STag,"
2747                                 " ib_mr=%p, rkey = 0x%08X\n",
2748                                 ib_mr, ib_mr->rkey);
2749                 return -ETIME;
2750         } else if (major_code) {
2751                 nes_debug(NES_DBG_MR, "Error (0x%04X:0x%04X) while attempting"
2752                                 " to destroy STag, ib_mr=%p, rkey = 0x%08X\n",
2753                                 major_code, minor_code, ib_mr, ib_mr->rkey);
2754                 return -EIO;
2755         }
2756
2757         if (nesmr->pbls_used != 0) {
2758                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2759                 if (nesmr->pbl_4k) {
2760                         nesadapter->free_4kpbl += nesmr->pbls_used;
2761                         if (nesadapter->free_4kpbl > nesadapter->max_4kpbl)
2762                                 printk(KERN_ERR PFX "free 4KB PBLs(%u) has "
2763                                         "exceeded the max(%u)\n",
2764                                         nesadapter->free_4kpbl,
2765                                         nesadapter->max_4kpbl);
2766                 } else {
2767                         nesadapter->free_256pbl += nesmr->pbls_used;
2768                         if (nesadapter->free_256pbl > nesadapter->max_256pbl)
2769                                 printk(KERN_ERR PFX "free 256B PBLs(%u) has "
2770                                         "exceeded the max(%u)\n",
2771                                         nesadapter->free_256pbl,
2772                                         nesadapter->max_256pbl);
2773                 }
2774                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2775         }
2776         nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2777                         (ib_mr->rkey & 0x0fffff00) >> 8);
2778
2779         kfree(nesmr);
2780
2781         return 0;
2782 }
2783
2784
2785 /**
2786  * show_rev
2787  */
2788 static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
2789                         char *buf)
2790 {
2791         struct nes_ib_device *nesibdev =
2792                         container_of(dev, struct nes_ib_device, ibdev.dev);
2793         struct nes_vnic *nesvnic = nesibdev->nesvnic;
2794
2795         nes_debug(NES_DBG_INIT, "\n");
2796         return sprintf(buf, "%x\n", nesvnic->nesdev->nesadapter->hw_rev);
2797 }
2798
2799
2800 /**
2801  * show_fw_ver
2802  */
2803 static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr,
2804                            char *buf)
2805 {
2806         struct nes_ib_device *nesibdev =
2807                         container_of(dev, struct nes_ib_device, ibdev.dev);
2808         struct nes_vnic *nesvnic = nesibdev->nesvnic;
2809
2810         nes_debug(NES_DBG_INIT, "\n");
2811         return sprintf(buf, "%u.%u\n",
2812                 (nesvnic->nesdev->nesadapter->firmware_version >> 16),
2813                 (nesvnic->nesdev->nesadapter->firmware_version & 0x000000ff));
2814 }
2815
2816
2817 /**
2818  * show_hca
2819  */
2820 static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
2821                         char *buf)
2822 {
2823         nes_debug(NES_DBG_INIT, "\n");
2824         return sprintf(buf, "NES020\n");
2825 }
2826
2827
2828 /**
2829  * show_board
2830  */
2831 static ssize_t show_board(struct device *dev, struct device_attribute *attr,
2832                           char *buf)
2833 {
2834         nes_debug(NES_DBG_INIT, "\n");
2835         return sprintf(buf, "%.*s\n", 32, "NES020 Board ID");
2836 }
2837
2838
2839 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
2840 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
2841 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
2842 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
2843
2844 static struct device_attribute *nes_dev_attributes[] = {
2845         &dev_attr_hw_rev,
2846         &dev_attr_fw_ver,
2847         &dev_attr_hca_type,
2848         &dev_attr_board_id
2849 };
2850
2851
2852 /**
2853  * nes_query_qp
2854  */
2855 static int nes_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2856                 int attr_mask, struct ib_qp_init_attr *init_attr)
2857 {
2858         struct nes_qp *nesqp = to_nesqp(ibqp);
2859
2860         nes_debug(NES_DBG_QP, "\n");
2861
2862         attr->qp_access_flags = 0;
2863         attr->cap.max_send_wr = nesqp->hwqp.sq_size;
2864         attr->cap.max_recv_wr = nesqp->hwqp.rq_size;
2865         attr->cap.max_recv_sge = 1;
2866         if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) {
2867                 init_attr->cap.max_inline_data = 0;
2868         } else {
2869                 init_attr->cap.max_inline_data = 64;
2870         }
2871
2872         init_attr->event_handler = nesqp->ibqp.event_handler;
2873         init_attr->qp_context = nesqp->ibqp.qp_context;
2874         init_attr->send_cq = nesqp->ibqp.send_cq;
2875         init_attr->recv_cq = nesqp->ibqp.recv_cq;
2876         init_attr->srq = nesqp->ibqp.srq = nesqp->ibqp.srq;
2877         init_attr->cap = attr->cap;
2878
2879         return 0;
2880 }
2881
2882
2883 /**
2884  * nes_hw_modify_qp
2885  */
2886 int nes_hw_modify_qp(struct nes_device *nesdev, struct nes_qp *nesqp,
2887                 u32 next_iwarp_state, u32 wait_completion)
2888 {
2889         struct nes_hw_cqp_wqe *cqp_wqe;
2890         /* struct iw_cm_id *cm_id = nesqp->cm_id; */
2891         /* struct iw_cm_event cm_event; */
2892         struct nes_cqp_request *cqp_request;
2893         int ret;
2894         u16 major_code;
2895
2896         nes_debug(NES_DBG_MOD_QP, "QP%u, refcount=%d\n",
2897                         nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
2898
2899         cqp_request = nes_get_cqp_request(nesdev);
2900         if (cqp_request == NULL) {
2901                 nes_debug(NES_DBG_MOD_QP, "Failed to get a cqp_request.\n");
2902                 return -ENOMEM;
2903         }
2904         if (wait_completion) {
2905                 cqp_request->waiting = 1;
2906         } else {
2907                 cqp_request->waiting = 0;
2908         }
2909         cqp_wqe = &cqp_request->cqp_wqe;
2910
2911         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2912                         NES_CQP_MODIFY_QP | NES_CQP_QP_TYPE_IWARP | next_iwarp_state);
2913         nes_debug(NES_DBG_MOD_QP, "using next_iwarp_state=%08x, wqe_words=%08x\n",
2914                         next_iwarp_state, le32_to_cpu(cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX]));
2915         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2916         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
2917         set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, (u64)nesqp->nesqp_context_pbase);
2918
2919         atomic_set(&cqp_request->refcount, 2);
2920         nes_post_cqp_request(nesdev, cqp_request);
2921
2922         /* Wait for CQP */
2923         if (wait_completion) {
2924                 /* nes_debug(NES_DBG_MOD_QP, "Waiting for modify iWARP QP%u to complete.\n",
2925                                 nesqp->hwqp.qp_id); */
2926                 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2927                                 NES_EVENT_TIMEOUT);
2928                 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u completed, wait_event_timeout ret=%u, "
2929                                 "CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2930                                 nesqp->hwqp.qp_id, ret, cqp_request->major_code, cqp_request->minor_code);
2931                 major_code = cqp_request->major_code;
2932                 if (major_code) {
2933                         nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u failed"
2934                                         "CQP Major:Minor codes = 0x%04X:0x%04X, intended next state = 0x%08X.\n",
2935                                         nesqp->hwqp.qp_id, cqp_request->major_code,
2936                                         cqp_request->minor_code, next_iwarp_state);
2937                 }
2938
2939                 nes_put_cqp_request(nesdev, cqp_request);
2940
2941                 if (!ret)
2942                         return -ETIME;
2943                 else if (major_code)
2944                         return -EIO;
2945                 else
2946                         return 0;
2947         } else {
2948                 return 0;
2949         }
2950 }
2951
2952
2953 /**
2954  * nes_modify_qp
2955  */
2956 int nes_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2957                 int attr_mask, struct ib_udata *udata)
2958 {
2959         struct nes_qp *nesqp = to_nesqp(ibqp);
2960         struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
2961         struct nes_device *nesdev = nesvnic->nesdev;
2962         /* u32 cqp_head; */
2963         /* u32 counter; */
2964         u32 next_iwarp_state = 0;
2965         int err;
2966         unsigned long qplockflags;
2967         int ret;
2968         u16 original_last_aeq;
2969         u8 issue_modify_qp = 0;
2970         u8 issue_disconnect = 0;
2971         u8 dont_wait = 0;
2972
2973         nes_debug(NES_DBG_MOD_QP, "QP%u: QP State=%u, cur QP State=%u,"
2974                         " iwarp_state=0x%X, refcount=%d\n",
2975                         nesqp->hwqp.qp_id, attr->qp_state, nesqp->ibqp_state,
2976                         nesqp->iwarp_state, atomic_read(&nesqp->refcount));
2977
2978         spin_lock_irqsave(&nesqp->lock, qplockflags);
2979
2980         nes_debug(NES_DBG_MOD_QP, "QP%u: hw_iwarp_state=0x%X, hw_tcp_state=0x%X,"
2981                         " QP Access Flags=0x%X, attr_mask = 0x%0x\n",
2982                         nesqp->hwqp.qp_id, nesqp->hw_iwarp_state,
2983                         nesqp->hw_tcp_state, attr->qp_access_flags, attr_mask);
2984
2985         if (attr_mask & IB_QP_STATE) {
2986                 switch (attr->qp_state) {
2987                         case IB_QPS_INIT:
2988                                 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = init\n",
2989                                                 nesqp->hwqp.qp_id);
2990                                 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_IDLE) {
2991                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2992                                         return -EINVAL;
2993                                 }
2994                                 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
2995                                 issue_modify_qp = 1;
2996                                 break;
2997                         case IB_QPS_RTR:
2998                                 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rtr\n",
2999                                                 nesqp->hwqp.qp_id);
3000                                 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_IDLE) {
3001                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3002                                         return -EINVAL;
3003                                 }
3004                                 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
3005                                 issue_modify_qp = 1;
3006                                 break;
3007                         case IB_QPS_RTS:
3008                                 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rts\n",
3009                                                 nesqp->hwqp.qp_id);
3010                                 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_RTS) {
3011                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3012                                         return -EINVAL;
3013                                 }
3014                                 if (nesqp->cm_id == NULL) {
3015                                         nes_debug(NES_DBG_MOD_QP, "QP%u: Failing attempt to move QP to RTS without a CM_ID. \n",
3016                                                         nesqp->hwqp.qp_id );
3017                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3018                                         return -EINVAL;
3019                                 }
3020                                 next_iwarp_state = NES_CQP_QP_IWARP_STATE_RTS;
3021                                 if (nesqp->iwarp_state != NES_CQP_QP_IWARP_STATE_RTS)
3022                                         next_iwarp_state |= NES_CQP_QP_CONTEXT_VALID |
3023                                                         NES_CQP_QP_ARP_VALID | NES_CQP_QP_ORD_VALID;
3024                                 issue_modify_qp = 1;
3025                                 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_ESTABLISHED;
3026                                 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_RTS;
3027                                 nesqp->hte_added = 1;
3028                                 break;
3029                         case IB_QPS_SQD:
3030                                 issue_modify_qp = 1;
3031                                 nes_debug(NES_DBG_MOD_QP, "QP%u: new state=closing. SQ head=%u, SQ tail=%u\n",
3032                                                 nesqp->hwqp.qp_id, nesqp->hwqp.sq_head, nesqp->hwqp.sq_tail);
3033                                 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
3034                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3035                                         return 0;
3036                                 } else {
3037                                         if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
3038                                                 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
3039                                                                 " ignored due to current iWARP state\n",
3040                                                                 nesqp->hwqp.qp_id);
3041                                                 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3042                                                 return -EINVAL;
3043                                         }
3044                                         if (nesqp->hw_iwarp_state != NES_AEQE_IWARP_STATE_RTS) {
3045                                                 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
3046                                                                 " already done based on hw state.\n",
3047                                                                 nesqp->hwqp.qp_id);
3048                                                 issue_modify_qp = 0;
3049                                                 nesqp->in_disconnect = 0;
3050                                         }
3051                                         switch (nesqp->hw_iwarp_state) {
3052                                                 case NES_AEQE_IWARP_STATE_CLOSING:
3053                                                         next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
3054                                                 case NES_AEQE_IWARP_STATE_TERMINATE:
3055                                                         next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
3056                                                         break;
3057                                                 case NES_AEQE_IWARP_STATE_ERROR:
3058                                                         next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
3059                                                         break;
3060                                                 default:
3061                                                         next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
3062                                                         nesqp->in_disconnect = 1;
3063                                                         nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_CLOSING;
3064                                                         break;
3065                                         }
3066                                 }
3067                                 break;
3068                         case IB_QPS_SQE:
3069                                 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = terminate\n",
3070                                                 nesqp->hwqp.qp_id);
3071                                 if (nesqp->iwarp_state>=(u32)NES_CQP_QP_IWARP_STATE_TERMINATE) {
3072                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3073                                         return -EINVAL;
3074                                 }
3075                                 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
3076                                 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
3077                                 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_TERMINATE;
3078                                 issue_modify_qp = 1;
3079                                 nesqp->in_disconnect = 1;
3080                                 break;
3081                         case IB_QPS_ERR:
3082                         case IB_QPS_RESET:
3083                                 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_ERROR) {
3084                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3085                                         return -EINVAL;
3086                                 }
3087                                 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = error\n",
3088                                                 nesqp->hwqp.qp_id);
3089                                 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
3090                                 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
3091                                         if (nesqp->hte_added) {
3092                                                 nes_debug(NES_DBG_MOD_QP, "set CQP_QP_DEL_HTE\n");
3093                                                 next_iwarp_state |= NES_CQP_QP_DEL_HTE;
3094                                                 nesqp->hte_added = 0;
3095                                         }
3096                                 if ((nesqp->hw_tcp_state > NES_AEQE_TCP_STATE_CLOSED) &&
3097                                                 (nesqp->hw_tcp_state != NES_AEQE_TCP_STATE_TIME_WAIT)) {
3098                                         next_iwarp_state |= NES_CQP_QP_RESET;
3099                                         nesqp->in_disconnect = 1;
3100                                 } else {
3101                                         nes_debug(NES_DBG_MOD_QP, "QP%u NOT setting NES_CQP_QP_RESET since TCP state = %u\n",
3102                                                         nesqp->hwqp.qp_id, nesqp->hw_tcp_state);
3103                                         dont_wait = 1;
3104                                 }
3105                                 issue_modify_qp = 1;
3106                                 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_ERROR;
3107                                 break;
3108                         default:
3109                                 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3110                                 return -EINVAL;
3111                                 break;
3112                 }
3113
3114                 nesqp->ibqp_state = attr->qp_state;
3115                 if (((nesqp->iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) ==
3116                                 (u32)NES_CQP_QP_IWARP_STATE_RTS) &&
3117                                 ((next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) >
3118                                 (u32)NES_CQP_QP_IWARP_STATE_RTS)) {
3119                         nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
3120                         nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
3121                                         nesqp->iwarp_state);
3122                         issue_disconnect = 1;
3123                 } else {
3124                         nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
3125                         nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
3126                                         nesqp->iwarp_state);
3127                 }
3128         }
3129
3130         if (attr_mask & IB_QP_ACCESS_FLAGS) {
3131                 if (attr->qp_access_flags & IB_ACCESS_LOCAL_WRITE) {
3132                         nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
3133                                         NES_QPCONTEXT_MISC_RDMA_READ_EN);
3134                         issue_modify_qp = 1;
3135                 }
3136                 if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE) {
3137                         nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN);
3138                         issue_modify_qp = 1;
3139                 }
3140                 if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ) {
3141                         nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_READ_EN);
3142                         issue_modify_qp = 1;
3143                 }
3144                 if (attr->qp_access_flags & IB_ACCESS_MW_BIND) {
3145                         nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_WBIND_EN);
3146                         issue_modify_qp = 1;
3147                 }
3148
3149                 if (nesqp->user_mode) {
3150                         nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
3151                                         NES_QPCONTEXT_MISC_RDMA_READ_EN);
3152                         issue_modify_qp = 1;
3153                 }
3154         }
3155
3156         original_last_aeq = nesqp->last_aeq;
3157         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3158
3159         nes_debug(NES_DBG_MOD_QP, "issue_modify_qp=%u\n", issue_modify_qp);
3160
3161         ret = 0;
3162
3163
3164         if (issue_modify_qp) {
3165                 nes_debug(NES_DBG_MOD_QP, "call nes_hw_modify_qp\n");
3166                 ret = nes_hw_modify_qp(nesdev, nesqp, next_iwarp_state, 1);
3167                 if (ret)
3168                         nes_debug(NES_DBG_MOD_QP, "nes_hw_modify_qp (next_iwarp_state = 0x%08X)"
3169                                         " failed for QP%u.\n",
3170                                         next_iwarp_state, nesqp->hwqp.qp_id);
3171
3172         }
3173
3174         if ((issue_modify_qp) && (nesqp->ibqp_state > IB_QPS_RTS)) {
3175                 nes_debug(NES_DBG_MOD_QP, "QP%u Issued ModifyQP refcount (%d),"
3176                                 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3177                                 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3178                                 original_last_aeq, nesqp->last_aeq);
3179                 if ((!ret) ||
3180                                 ((original_last_aeq != NES_AEQE_AEID_RDMAP_ROE_BAD_LLP_CLOSE) &&
3181                                 (ret))) {
3182                         if (dont_wait) {
3183                                 if (nesqp->cm_id && nesqp->hw_tcp_state != 0) {
3184                                         nes_debug(NES_DBG_MOD_QP, "QP%u Queuing fake disconnect for QP refcount (%d),"
3185                                                         " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3186                                                         nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3187                                                         original_last_aeq, nesqp->last_aeq);
3188                                         /* this one is for the cm_disconnect thread */
3189                                         spin_lock_irqsave(&nesqp->lock, qplockflags);
3190                                         nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_CLOSED;
3191                                         nesqp->last_aeq = NES_AEQE_AEID_RESET_SENT;
3192                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3193                                         nes_cm_disconn(nesqp);
3194                                 } else {
3195                                         nes_debug(NES_DBG_MOD_QP, "QP%u No fake disconnect, QP refcount=%d\n",
3196                                                         nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3197                                 }
3198                         } else {
3199                                 spin_lock_irqsave(&nesqp->lock, qplockflags);
3200                                 if (nesqp->cm_id) {
3201                                         /* These two are for the timer thread */
3202                                         if (atomic_inc_return(&nesqp->close_timer_started) == 1) {
3203                                                 nesqp->cm_id->add_ref(nesqp->cm_id);
3204                                                 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3205                                                                 " need ae to finish up, original_last_aeq = 0x%04X."
3206                                                                 " last_aeq = 0x%04X, scheduling timer.\n",
3207                                                                 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3208                                                                 original_last_aeq, nesqp->last_aeq);
3209                                                 schedule_nes_timer(nesqp->cm_node, (struct sk_buff *) nesqp, NES_TIMER_TYPE_CLOSE, 1, 0);
3210                                         }
3211                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3212                                 } else {
3213                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3214                                         nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3215                                                         " need ae to finish up, original_last_aeq = 0x%04X."
3216                                                         " last_aeq = 0x%04X.\n",
3217                                                         nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3218                                                         original_last_aeq, nesqp->last_aeq);
3219                                 }
3220                         }
3221                 } else {
3222                         nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3223                                         " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3224                                         nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3225                                         original_last_aeq, nesqp->last_aeq);
3226                 }
3227         } else {
3228                 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3229                                 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3230                                 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3231                                 original_last_aeq, nesqp->last_aeq);
3232         }
3233
3234         err = 0;
3235
3236         nes_debug(NES_DBG_MOD_QP, "QP%u Leaving, refcount=%d\n",
3237                         nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3238
3239         return err;
3240 }
3241
3242
3243 /**
3244  * nes_muticast_attach
3245  */
3246 static int nes_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3247 {
3248         nes_debug(NES_DBG_INIT, "\n");
3249         return -ENOSYS;
3250 }
3251
3252
3253 /**
3254  * nes_multicast_detach
3255  */
3256 static int nes_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3257 {
3258         nes_debug(NES_DBG_INIT, "\n");
3259         return -ENOSYS;
3260 }
3261
3262
3263 /**
3264  * nes_process_mad
3265  */
3266 static int nes_process_mad(struct ib_device *ibdev, int mad_flags,
3267                 u8 port_num, struct ib_wc *in_wc, struct ib_grh *in_grh,
3268                 struct ib_mad *in_mad, struct ib_mad *out_mad)
3269 {
3270         nes_debug(NES_DBG_INIT, "\n");
3271         return -ENOSYS;
3272 }
3273
3274 static inline void
3275 fill_wqe_sg_send(struct nes_hw_qp_wqe *wqe, struct ib_send_wr *ib_wr, u32 uselkey)
3276 {
3277         int sge_index;
3278         int total_payload_length = 0;
3279         for (sge_index = 0; sge_index < ib_wr->num_sge; sge_index++) {
3280                 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3281                         ib_wr->sg_list[sge_index].addr);
3282                 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_LENGTH0_IDX + (sge_index*4),
3283                         ib_wr->sg_list[sge_index].length);
3284                 if (uselkey)
3285                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4),
3286                                                 (ib_wr->sg_list[sge_index].lkey));
3287                 else
3288                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4), 0);
3289
3290                 total_payload_length += ib_wr->sg_list[sge_index].length;
3291         }
3292         nes_debug(NES_DBG_IW_TX, "UC UC UC, sending total_payload_length=%u \n",
3293                         total_payload_length);
3294         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3295                                 total_payload_length);
3296 }
3297
3298 /**
3299  * nes_post_send
3300  */
3301 static int nes_post_send(struct ib_qp *ibqp, struct ib_send_wr *ib_wr,
3302                 struct ib_send_wr **bad_wr)
3303 {
3304         u64 u64temp;
3305         unsigned long flags = 0;
3306         struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3307         struct nes_device *nesdev = nesvnic->nesdev;
3308         struct nes_qp *nesqp = to_nesqp(ibqp);
3309         struct nes_hw_qp_wqe *wqe;
3310         int err;
3311         u32 qsize = nesqp->hwqp.sq_size;
3312         u32 head;
3313         u32 wqe_misc;
3314         u32 wqe_count;
3315         u32 counter;
3316         u32 total_payload_length;
3317
3318         err = 0;
3319         wqe_misc = 0;
3320         wqe_count = 0;
3321         total_payload_length = 0;
3322
3323         if (nesqp->ibqp_state > IB_QPS_RTS)
3324                 return -EINVAL;
3325
3326         spin_lock_irqsave(&nesqp->lock, flags);
3327
3328         head = nesqp->hwqp.sq_head;
3329
3330         while (ib_wr) {
3331                 /* Check for SQ overflow */
3332                 if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
3333                         err = -EINVAL;
3334                         break;
3335                 }
3336
3337                 wqe = &nesqp->hwqp.sq_vbase[head];
3338                 /* nes_debug(NES_DBG_IW_TX, "processing sq wqe for QP%u at %p, head = %u.\n",
3339                                 nesqp->hwqp.qp_id, wqe, head); */
3340                 nes_fill_init_qp_wqe(wqe, nesqp, head);
3341                 u64temp = (u64)(ib_wr->wr_id);
3342                 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3343                                         u64temp);
3344                         switch (ib_wr->opcode) {
3345                                 case IB_WR_SEND:
3346                                         if (ib_wr->send_flags & IB_SEND_SOLICITED) {
3347                                                 wqe_misc = NES_IWARP_SQ_OP_SENDSE;
3348                                         } else {
3349                                                 wqe_misc = NES_IWARP_SQ_OP_SEND;
3350                                         }
3351                                         if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3352                                                 err = -EINVAL;
3353                                                 break;
3354                                         }
3355                                         if (ib_wr->send_flags & IB_SEND_FENCE) {
3356                                                 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3357                                         }
3358                                         if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3359                                                         ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3360                                                         (ib_wr->sg_list[0].length <= 64)) {
3361                                                 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3362                                                                (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3363                                                 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3364                                                                 ib_wr->sg_list[0].length);
3365                                                 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3366                                         } else {
3367                                                 fill_wqe_sg_send(wqe, ib_wr, 1);
3368                                         }
3369
3370                                         break;
3371                                 case IB_WR_RDMA_WRITE:
3372                                         wqe_misc = NES_IWARP_SQ_OP_RDMAW;
3373                                         if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3374                                                 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=%u\n",
3375                                                                 ib_wr->num_sge,
3376                                                                 nesdev->nesadapter->max_sge);
3377                                                 err = -EINVAL;
3378                                                 break;
3379                                         }
3380                                         if (ib_wr->send_flags & IB_SEND_FENCE) {
3381                                                 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3382                                         }
3383
3384                                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3385                                                         ib_wr->wr.rdma.rkey);
3386                                         set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3387                                                         ib_wr->wr.rdma.remote_addr);
3388
3389                                         if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3390                                                         ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3391                                                         (ib_wr->sg_list[0].length <= 64)) {
3392                                                 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3393                                                                (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3394                                                 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3395                                                                 ib_wr->sg_list[0].length);
3396                                                 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3397                                         } else {
3398                                                 fill_wqe_sg_send(wqe, ib_wr, 1);
3399                                         }
3400                                         wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX] =
3401                                                         wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX];
3402                                         break;
3403                                 case IB_WR_RDMA_READ:
3404                                         /* iWARP only supports 1 sge for RDMA reads */
3405                                         if (ib_wr->num_sge > 1) {
3406                                                 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=1\n",
3407                                                                 ib_wr->num_sge);
3408                                                 err = -EINVAL;
3409                                                 break;
3410                                         }
3411                                         wqe_misc = NES_IWARP_SQ_OP_RDMAR;
3412                                         set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3413                                                         ib_wr->wr.rdma.remote_addr);
3414                                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3415                                                         ib_wr->wr.rdma.rkey);
3416                                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX,
3417                                                         ib_wr->sg_list->length);
3418                                         set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX,
3419                                                         ib_wr->sg_list->addr);
3420                                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX,
3421                                                         ib_wr->sg_list->lkey);
3422                                         break;
3423                                 default:
3424                                         /* error */
3425                                         err = -EINVAL;
3426                                         break;
3427                         }
3428
3429                 if (ib_wr->send_flags & IB_SEND_SIGNALED) {
3430                         wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
3431                 }
3432                 wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = cpu_to_le32(wqe_misc);
3433
3434                 ib_wr = ib_wr->next;
3435                 head++;
3436                 wqe_count++;
3437                 if (head >= qsize)
3438                         head = 0;
3439
3440         }
3441
3442         nesqp->hwqp.sq_head = head;
3443         barrier();
3444         while (wqe_count) {
3445                 counter = min(wqe_count, ((u32)255));
3446                 wqe_count -= counter;
3447                 nes_write32(nesdev->regs + NES_WQE_ALLOC,
3448                                 (counter << 24) | 0x00800000 | nesqp->hwqp.qp_id);
3449         }
3450
3451         spin_unlock_irqrestore(&nesqp->lock, flags);
3452
3453         if (err)
3454                 *bad_wr = ib_wr;
3455         return err;
3456 }
3457
3458
3459 /**
3460  * nes_post_recv
3461  */
3462 static int nes_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *ib_wr,
3463                 struct ib_recv_wr **bad_wr)
3464 {
3465         u64 u64temp;
3466         unsigned long flags = 0;
3467         struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3468         struct nes_device *nesdev = nesvnic->nesdev;
3469         struct nes_qp *nesqp = to_nesqp(ibqp);
3470         struct nes_hw_qp_wqe *wqe;
3471         int err = 0;
3472         int sge_index;
3473         u32 qsize = nesqp->hwqp.rq_size;
3474         u32 head;
3475         u32 wqe_count = 0;
3476         u32 counter;
3477         u32 total_payload_length;
3478
3479         if (nesqp->ibqp_state > IB_QPS_RTS)
3480                 return -EINVAL;
3481
3482         spin_lock_irqsave(&nesqp->lock, flags);
3483
3484         head = nesqp->hwqp.rq_head;
3485
3486         while (ib_wr) {
3487                 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3488                         err = -EINVAL;
3489                         break;
3490                 }
3491                 /* Check for RQ overflow */
3492                 if (((head + (2 * qsize) - nesqp->hwqp.rq_tail) % qsize) == (qsize - 1)) {
3493                         err = -EINVAL;
3494                         break;
3495                 }
3496
3497                 nes_debug(NES_DBG_IW_RX, "ibwr sge count = %u.\n", ib_wr->num_sge);
3498                 wqe = &nesqp->hwqp.rq_vbase[head];
3499
3500                 /* nes_debug(NES_DBG_IW_RX, "QP%u:processing rq wqe at %p, head = %u.\n",
3501                                 nesqp->hwqp.qp_id, wqe, head); */
3502                 nes_fill_init_qp_wqe(wqe, nesqp, head);
3503                 u64temp = (u64)(ib_wr->wr_id);
3504                 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3505                                         u64temp);
3506                 total_payload_length = 0;
3507                 for (sge_index=0; sge_index < ib_wr->num_sge; sge_index++) {
3508                         set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3509                                         ib_wr->sg_list[sge_index].addr);
3510                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_LENGTH0_IDX+(sge_index*4),
3511                                         ib_wr->sg_list[sge_index].length);
3512                         set_wqe_32bit_value(wqe->wqe_words,NES_IWARP_RQ_WQE_STAG0_IDX+(sge_index*4),
3513                                         ib_wr->sg_list[sge_index].lkey);
3514
3515                         total_payload_length += ib_wr->sg_list[sge_index].length;
3516                 }
3517                 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_TOTAL_PAYLOAD_IDX,
3518                                         total_payload_length);
3519
3520                 ib_wr = ib_wr->next;
3521                 head++;
3522                 wqe_count++;
3523                 if (head >= qsize)
3524                         head = 0;
3525         }
3526
3527         nesqp->hwqp.rq_head = head;
3528         barrier();
3529         while (wqe_count) {
3530                 counter = min(wqe_count, ((u32)255));
3531                 wqe_count -= counter;
3532                 nes_write32(nesdev->regs+NES_WQE_ALLOC, (counter<<24) | nesqp->hwqp.qp_id);
3533         }
3534
3535         spin_unlock_irqrestore(&nesqp->lock, flags);
3536
3537         if (err)
3538                 *bad_wr = ib_wr;
3539         return err;
3540 }
3541
3542
3543 /**
3544  * nes_poll_cq
3545  */
3546 static int nes_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry)
3547 {
3548         u64 u64temp;
3549         u64 wrid;
3550         /* u64 u64temp; */
3551         unsigned long flags = 0;
3552         struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3553         struct nes_device *nesdev = nesvnic->nesdev;
3554         struct nes_cq *nescq = to_nescq(ibcq);
3555         struct nes_qp *nesqp;
3556         struct nes_hw_cqe cqe;
3557         u32 head;
3558         u32 wq_tail;
3559         u32 cq_size;
3560         u32 cqe_count = 0;
3561         u32 wqe_index;
3562         u32 u32temp;
3563         /* u32 counter; */
3564
3565         nes_debug(NES_DBG_CQ, "\n");
3566
3567         spin_lock_irqsave(&nescq->lock, flags);
3568
3569         head = nescq->hw_cq.cq_head;
3570         cq_size = nescq->hw_cq.cq_size;
3571
3572         while (cqe_count < num_entries) {
3573                 if (le32_to_cpu(nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX]) &
3574                                 NES_CQE_VALID) {
3575                         /*
3576                          * Make sure we read CQ entry contents *after*
3577                          * we've checked the valid bit.
3578                          */
3579                         rmb();
3580
3581                         cqe = nescq->hw_cq.cq_vbase[head];
3582                         nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX] = 0;
3583                         u32temp = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3584                         wqe_index = u32temp &
3585                                         (nesdev->nesadapter->max_qp_wr - 1);
3586                         u32temp &= ~(NES_SW_CONTEXT_ALIGN-1);
3587                         /* parse CQE, get completion context from WQE (either rq or sq */
3588                         u64temp = (((u64)(le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX])))<<32) |
3589                                         ((u64)u32temp);
3590                         nesqp = *((struct nes_qp **)&u64temp);
3591                         memset(entry, 0, sizeof *entry);
3592                         if (cqe.cqe_words[NES_CQE_ERROR_CODE_IDX] == 0) {
3593                                 entry->status = IB_WC_SUCCESS;
3594                         } else {
3595                                 entry->status = IB_WC_WR_FLUSH_ERR;
3596                         }
3597
3598                         entry->qp = &nesqp->ibqp;
3599                         entry->src_qp = nesqp->hwqp.qp_id;
3600
3601                         if (le32_to_cpu(cqe.cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_SQ) {
3602                                 if (nesqp->skip_lsmm) {
3603                                         nesqp->skip_lsmm = 0;
3604                                         wq_tail = nesqp->hwqp.sq_tail++;
3605                                 }
3606
3607                                 /* Working on a SQ Completion*/
3608                                 wq_tail = wqe_index;
3609                                 nesqp->hwqp.sq_tail = (wqe_index+1)&(nesqp->hwqp.sq_size - 1);
3610                                 wrid = (((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wq_tail].
3611                                                 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_HIGH_IDX]))) << 32) |
3612                                                 ((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wq_tail].
3613                                                 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX])));
3614                                 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wq_tail].
3615                                                 wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX]);
3616
3617                                 switch (le32_to_cpu(nesqp->hwqp.sq_vbase[wq_tail].
3618                                                 wqe_words[NES_IWARP_SQ_WQE_MISC_IDX]) & 0x3f) {
3619                                         case NES_IWARP_SQ_OP_RDMAW:
3620                                                 nes_debug(NES_DBG_CQ, "Operation = RDMA WRITE.\n");
3621                                                 entry->opcode = IB_WC_RDMA_WRITE;
3622                                                 break;
3623                                         case NES_IWARP_SQ_OP_RDMAR:
3624                                                 nes_debug(NES_DBG_CQ, "Operation = RDMA READ.\n");
3625                                                 entry->opcode = IB_WC_RDMA_READ;
3626                                                 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wq_tail].
3627                                                                 wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX]);
3628                                                 break;
3629                                         case NES_IWARP_SQ_OP_SENDINV:
3630                                         case NES_IWARP_SQ_OP_SENDSEINV:
3631                                         case NES_IWARP_SQ_OP_SEND:
3632                                         case NES_IWARP_SQ_OP_SENDSE:
3633                                                 nes_debug(NES_DBG_CQ, "Operation = Send.\n");
3634                                                 entry->opcode = IB_WC_SEND;
3635                                                 break;
3636                                 }
3637                         } else {
3638                                 /* Working on a RQ Completion*/
3639                                 wq_tail = wqe_index;
3640                                         nesqp->hwqp.rq_tail = (wqe_index+1)&(nesqp->hwqp.rq_size - 1);
3641                                 entry->byte_len = le32_to_cpu(cqe.cqe_words[NES_CQE_PAYLOAD_LENGTH_IDX]);
3642                                 wrid = ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wq_tail].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_LOW_IDX]))) |
3643                                         ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wq_tail].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_HIGH_IDX]))<<32);
3644                                         entry->opcode = IB_WC_RECV;
3645                         }
3646                         entry->wr_id = wrid;
3647
3648                         if (++head >= cq_size)
3649                                 head = 0;
3650                         cqe_count++;
3651                         nescq->polled_completions++;
3652                         if ((nescq->polled_completions > (cq_size / 2)) ||
3653                                         (nescq->polled_completions == 255)) {
3654                                 nes_debug(NES_DBG_CQ, "CQ%u Issuing CQE Allocate since more than half of cqes"
3655                                                 " are pending %u of %u.\n",
3656                                                 nescq->hw_cq.cq_number, nescq->polled_completions, cq_size);
3657                                 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3658                                                 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3659                                 nescq->polled_completions = 0;
3660                         }
3661                         entry++;
3662                 } else
3663                         break;
3664         }
3665
3666         if (nescq->polled_completions) {
3667                 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3668                                 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3669                 nescq->polled_completions = 0;
3670         }
3671
3672         nescq->hw_cq.cq_head = head;
3673         nes_debug(NES_DBG_CQ, "Reporting %u completions for CQ%u.\n",
3674                         cqe_count, nescq->hw_cq.cq_number);
3675
3676         spin_unlock_irqrestore(&nescq->lock, flags);
3677
3678         return cqe_count;
3679 }
3680
3681
3682 /**
3683  * nes_req_notify_cq
3684  */
3685 static int nes_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags notify_flags)
3686                 {
3687         struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3688         struct nes_device *nesdev = nesvnic->nesdev;
3689         struct nes_cq *nescq = to_nescq(ibcq);
3690         u32 cq_arm;
3691
3692         nes_debug(NES_DBG_CQ, "Requesting notification for CQ%u.\n",
3693                         nescq->hw_cq.cq_number);
3694
3695         cq_arm = nescq->hw_cq.cq_number;
3696         if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_NEXT_COMP)
3697                 cq_arm |= NES_CQE_ALLOC_NOTIFY_NEXT;
3698         else if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
3699                 cq_arm |= NES_CQE_ALLOC_NOTIFY_SE;
3700         else
3701                 return -EINVAL;
3702
3703         nes_write32(nesdev->regs+NES_CQE_ALLOC, cq_arm);
3704         nes_read32(nesdev->regs+NES_CQE_ALLOC);
3705
3706         return 0;
3707 }
3708
3709
3710 /**
3711  * nes_init_ofa_device
3712  */
3713 struct nes_ib_device *nes_init_ofa_device(struct net_device *netdev)
3714 {
3715         struct nes_ib_device *nesibdev;
3716         struct nes_vnic *nesvnic = netdev_priv(netdev);
3717         struct nes_device *nesdev = nesvnic->nesdev;
3718
3719         nesibdev = (struct nes_ib_device *)ib_alloc_device(sizeof(struct nes_ib_device));
3720         if (nesibdev == NULL) {
3721                 return NULL;
3722         }
3723         strlcpy(nesibdev->ibdev.name, "nes%d", IB_DEVICE_NAME_MAX);
3724         nesibdev->ibdev.owner = THIS_MODULE;
3725
3726         nesibdev->ibdev.node_type = RDMA_NODE_RNIC;
3727         memset(&nesibdev->ibdev.node_guid, 0, sizeof(nesibdev->ibdev.node_guid));
3728         memcpy(&nesibdev->ibdev.node_guid, netdev->dev_addr, 6);
3729
3730         nesibdev->ibdev.uverbs_cmd_mask =
3731                         (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
3732                         (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
3733                         (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
3734                         (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
3735                         (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
3736                         (1ull << IB_USER_VERBS_CMD_REG_MR) |
3737                         (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
3738                         (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
3739                         (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
3740                         (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
3741                         (1ull << IB_USER_VERBS_CMD_CREATE_AH) |
3742                         (1ull << IB_USER_VERBS_CMD_DESTROY_AH) |
3743                         (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
3744                         (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
3745                         (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
3746                         (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
3747                         (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
3748                         (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
3749                         (1ull << IB_USER_VERBS_CMD_BIND_MW) |
3750                         (1ull << IB_USER_VERBS_CMD_DEALLOC_MW) |
3751                         (1ull << IB_USER_VERBS_CMD_POST_RECV) |
3752                         (1ull << IB_USER_VERBS_CMD_POST_SEND);
3753
3754         nesibdev->ibdev.phys_port_cnt = 1;
3755         nesibdev->ibdev.num_comp_vectors = 1;
3756         nesibdev->ibdev.dma_device = &nesdev->pcidev->dev;
3757         nesibdev->ibdev.dev.parent = &nesdev->pcidev->dev;
3758         nesibdev->ibdev.query_device = nes_query_device;
3759         nesibdev->ibdev.query_port = nes_query_port;
3760         nesibdev->ibdev.modify_port = nes_modify_port;
3761         nesibdev->ibdev.query_pkey = nes_query_pkey;
3762         nesibdev->ibdev.query_gid = nes_query_gid;
3763         nesibdev->ibdev.alloc_ucontext = nes_alloc_ucontext;
3764         nesibdev->ibdev.dealloc_ucontext = nes_dealloc_ucontext;
3765         nesibdev->ibdev.mmap = nes_mmap;
3766         nesibdev->ibdev.alloc_pd = nes_alloc_pd;
3767         nesibdev->ibdev.dealloc_pd = nes_dealloc_pd;
3768         nesibdev->ibdev.create_ah = nes_create_ah;
3769         nesibdev->ibdev.destroy_ah = nes_destroy_ah;
3770         nesibdev->ibdev.create_qp = nes_create_qp;
3771         nesibdev->ibdev.modify_qp = nes_modify_qp;
3772         nesibdev->ibdev.query_qp = nes_query_qp;
3773         nesibdev->ibdev.destroy_qp = nes_destroy_qp;
3774         nesibdev->ibdev.create_cq = nes_create_cq;
3775         nesibdev->ibdev.destroy_cq = nes_destroy_cq;
3776         nesibdev->ibdev.poll_cq = nes_poll_cq;
3777         nesibdev->ibdev.get_dma_mr = nes_get_dma_mr;
3778         nesibdev->ibdev.reg_phys_mr = nes_reg_phys_mr;
3779         nesibdev->ibdev.reg_user_mr = nes_reg_user_mr;
3780         nesibdev->ibdev.dereg_mr = nes_dereg_mr;
3781         nesibdev->ibdev.alloc_mw = nes_alloc_mw;
3782         nesibdev->ibdev.dealloc_mw = nes_dealloc_mw;
3783         nesibdev->ibdev.bind_mw = nes_bind_mw;
3784
3785         nesibdev->ibdev.alloc_fmr = nes_alloc_fmr;
3786         nesibdev->ibdev.unmap_fmr = nes_unmap_fmr;
3787         nesibdev->ibdev.dealloc_fmr = nes_dealloc_fmr;
3788         nesibdev->ibdev.map_phys_fmr = nes_map_phys_fmr;
3789
3790         nesibdev->ibdev.attach_mcast = nes_multicast_attach;
3791         nesibdev->ibdev.detach_mcast = nes_multicast_detach;
3792         nesibdev->ibdev.process_mad = nes_process_mad;
3793
3794         nesibdev->ibdev.req_notify_cq = nes_req_notify_cq;
3795         nesibdev->ibdev.post_send = nes_post_send;
3796         nesibdev->ibdev.post_recv = nes_post_recv;
3797
3798         nesibdev->ibdev.iwcm = kzalloc(sizeof(*nesibdev->ibdev.iwcm), GFP_KERNEL);
3799         if (nesibdev->ibdev.iwcm == NULL) {
3800                 ib_dealloc_device(&nesibdev->ibdev);
3801                 return NULL;
3802         }
3803         nesibdev->ibdev.iwcm->add_ref = nes_add_ref;
3804         nesibdev->ibdev.iwcm->rem_ref = nes_rem_ref;
3805         nesibdev->ibdev.iwcm->get_qp = nes_get_qp;
3806         nesibdev->ibdev.iwcm->connect = nes_connect;
3807         nesibdev->ibdev.iwcm->accept = nes_accept;
3808         nesibdev->ibdev.iwcm->reject = nes_reject;
3809         nesibdev->ibdev.iwcm->create_listen = nes_create_listen;
3810         nesibdev->ibdev.iwcm->destroy_listen = nes_destroy_listen;
3811
3812         return nesibdev;
3813 }
3814
3815
3816 /**
3817  * nes_destroy_ofa_device
3818  */
3819 void nes_destroy_ofa_device(struct nes_ib_device *nesibdev)
3820 {
3821         if (nesibdev == NULL)
3822                 return;
3823
3824         nes_unregister_ofa_device(nesibdev);
3825
3826         kfree(nesibdev->ibdev.iwcm);
3827         ib_dealloc_device(&nesibdev->ibdev);
3828 }
3829
3830
3831 /**
3832  * nes_register_ofa_device
3833  */
3834 int nes_register_ofa_device(struct nes_ib_device *nesibdev)
3835 {
3836         struct nes_vnic *nesvnic = nesibdev->nesvnic;
3837         struct nes_device *nesdev = nesvnic->nesdev;
3838         struct nes_adapter *nesadapter = nesdev->nesadapter;
3839         int i, ret;
3840
3841         ret = ib_register_device(&nesvnic->nesibdev->ibdev);
3842         if (ret) {
3843                 return ret;
3844         }
3845
3846         /* Get the resources allocated to this device */
3847         nesibdev->max_cq = (nesadapter->max_cq-NES_FIRST_QPN) / nesadapter->port_count;
3848         nesibdev->max_mr = nesadapter->max_mr / nesadapter->port_count;
3849         nesibdev->max_qp = (nesadapter->max_qp-NES_FIRST_QPN) / nesadapter->port_count;
3850         nesibdev->max_pd = nesadapter->max_pd / nesadapter->port_count;
3851
3852         for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
3853                 ret = device_create_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
3854                 if (ret) {
3855                         while (i > 0) {
3856                                 i--;
3857                                 device_remove_file(&nesibdev->ibdev.dev,
3858                                                    nes_dev_attributes[i]);
3859                         }
3860                         ib_unregister_device(&nesibdev->ibdev);
3861                         return ret;
3862                 }
3863         }
3864
3865         nesvnic->of_device_registered = 1;
3866
3867         return 0;
3868 }
3869
3870
3871 /**
3872  * nes_unregister_ofa_device
3873  */
3874 static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev)
3875 {
3876         struct nes_vnic *nesvnic = nesibdev->nesvnic;
3877         int i;
3878
3879         for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
3880                 device_remove_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
3881         }
3882
3883         if (nesvnic->of_device_registered) {
3884                 ib_unregister_device(&nesibdev->ibdev);
3885         }
3886
3887         nesvnic->of_device_registered = 0;
3888 }