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         struct nes_vnic *nesvnic = to_nesvnic(ibdev);
 671         struct net_device *netdev = nesvnic->netdev;
 672
 673         memset(props, 0, sizeof(*props));
 674
 675         props->max_mtu = IB_MTU_4096;
 676
 677         if (netdev->mtu  >= 4096)
 678                 props->active_mtu = IB_MTU_4096;
 679         else if (netdev->mtu  >= 2048)
 680                 props->active_mtu = IB_MTU_2048;
 681         else if (netdev->mtu  >= 1024)
 682                 props->active_mtu = IB_MTU_1024;
 683         else if (netdev->mtu  >= 512)
 684                 props->active_mtu = IB_MTU_512;
 685         else
 686                 props->active_mtu = IB_MTU_256;
 687
 688         props->lid = 1;
 689         props->lmc = 0;
 690         props->sm_lid = 0;
 691         props->sm_sl = 0;
 692         if (nesvnic->linkup)
 693                 props->state = IB_PORT_ACTIVE;
 694         else
 695                 props->state = IB_PORT_DOWN;
 696         props->phys_state = 0;
 697         props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP |
 698                         IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
 699         props->gid_tbl_len = 1;
 700         props->pkey_tbl_len = 1;
 701         props->qkey_viol_cntr = 0;
 702         props->active_width = IB_WIDTH_4X;
 703         props->active_speed = 1;
 704         props->max_msg_sz = 0x80000000;
 705
 706         return 0;
 707 }
 708
 709
 710 /**
 711  * nes_modify_port
 712  */
 713 static int nes_modify_port(struct ib_device *ibdev, u8 port,
 714                 int port_modify_mask, struct ib_port_modify *props)
 715 {
 716         return 0;
 717 }
 718
 719
 720 /**
 721  * nes_query_pkey
 722  */
 723 static int nes_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
 724 {
 725         *pkey = 0;
 726         return 0;
 727 }
 728
 729
 730 /**
 731  * nes_query_gid
 732  */
 733 static int nes_query_gid(struct ib_device *ibdev, u8 port,
 734                 int index, union ib_gid *gid)
 735 {
 736         struct nes_vnic *nesvnic = to_nesvnic(ibdev);
 737
 738         memset(&(gid->raw[0]), 0, sizeof(gid->raw));
 739         memcpy(&(gid->raw[0]), nesvnic->netdev->dev_addr, 6);
 740
 741         return 0;
 742 }
 743
 744
 745 /**
 746  * nes_alloc_ucontext - Allocate the user context data structure. This keeps track
 747  * of all objects associated with a particular user-mode client.
 748  */
 749 static struct ib_ucontext *nes_alloc_ucontext(struct ib_device *ibdev,
 750                 struct ib_udata *udata)
 751 {
 752         struct nes_vnic *nesvnic = to_nesvnic(ibdev);
 753         struct nes_device *nesdev = nesvnic->nesdev;
 754         struct nes_adapter *nesadapter = nesdev->nesadapter;
 755         struct nes_alloc_ucontext_req req;
 756         struct nes_alloc_ucontext_resp uresp;
 757         struct nes_ucontext *nes_ucontext;
 758         struct nes_ib_device *nesibdev = nesvnic->nesibdev;
 759
 760
 761         if (ib_copy_from_udata(&req, udata, sizeof(struct nes_alloc_ucontext_req))) {
 762                 printk(KERN_ERR PFX "Invalid structure size on allocate user context.\n");
 763                 return ERR_PTR(-EINVAL);
 764         }
 765
 766         if (req.userspace_ver != NES_ABI_USERSPACE_VER) {
 767                 printk(KERN_ERR PFX "Invalid userspace driver version detected. Detected version %d, should be %d\n",
 768                         req.userspace_ver, NES_ABI_USERSPACE_VER);
 769                 return ERR_PTR(-EINVAL);
 770         }
 771
 772
 773         memset(&uresp, 0, sizeof uresp);
 774
 775         uresp.max_qps = nesibdev->max_qp;
 776         uresp.max_pds = nesibdev->max_pd;
 777         uresp.wq_size = nesdev->nesadapter->max_qp_wr * 2;
 778         uresp.virtwq = nesadapter->virtwq;
 779         uresp.kernel_ver = NES_ABI_KERNEL_VER;
 780
 781         nes_ucontext = kzalloc(sizeof *nes_ucontext, GFP_KERNEL);
 782         if (!nes_ucontext)
 783                 return ERR_PTR(-ENOMEM);
 784
 785         nes_ucontext->nesdev = nesdev;
 786         nes_ucontext->mmap_wq_offset = uresp.max_pds;
 787         nes_ucontext->mmap_cq_offset = nes_ucontext->mmap_wq_offset +
 788                         ((sizeof(struct nes_hw_qp_wqe) * uresp.max_qps * 2) + PAGE_SIZE-1) /
 789                         PAGE_SIZE;
 790
 791
 792         if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
 793                 kfree(nes_ucontext);
 794                 return ERR_PTR(-EFAULT);
 795         }
 796
 797         INIT_LIST_HEAD(&nes_ucontext->cq_reg_mem_list);
 798         INIT_LIST_HEAD(&nes_ucontext->qp_reg_mem_list);
 799         atomic_set(&nes_ucontext->usecnt, 1);
 800         return &nes_ucontext->ibucontext;
 801 }
 802
 803
 804 /**
 805  * nes_dealloc_ucontext
 806  */
 807 static int nes_dealloc_ucontext(struct ib_ucontext *context)
 808 {
 809         /* struct nes_vnic *nesvnic = to_nesvnic(context->device); */
 810         /* struct nes_device *nesdev = nesvnic->nesdev; */
 811         struct nes_ucontext *nes_ucontext = to_nesucontext(context);
 812
 813         if (!atomic_dec_and_test(&nes_ucontext->usecnt))
 814           return 0;
 815         kfree(nes_ucontext);
 816         return 0;
 817 }
 818
 819
 820 /**
 821  * nes_mmap
 822  */
 823 static int nes_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
 824 {
 825         unsigned long index;
 826         struct nes_vnic *nesvnic = to_nesvnic(context->device);
 827         struct nes_device *nesdev = nesvnic->nesdev;
 828         /* struct nes_adapter *nesadapter = nesdev->nesadapter; */
 829         struct nes_ucontext *nes_ucontext;
 830         struct nes_qp *nesqp;
 831
 832         nes_ucontext = to_nesucontext(context);
 833
 834
 835         if (vma->vm_pgoff >= nes_ucontext->mmap_wq_offset) {
 836                 index = (vma->vm_pgoff - nes_ucontext->mmap_wq_offset) * PAGE_SIZE;
 837                 index /= ((sizeof(struct nes_hw_qp_wqe) * nesdev->nesadapter->max_qp_wr * 2) +
 838                                 PAGE_SIZE-1) & (~(PAGE_SIZE-1));
 839                 if (!test_bit(index, nes_ucontext->allocated_wqs)) {
 840                         nes_debug(NES_DBG_MMAP, "wq %lu not allocated\n", index);
 841                         return -EFAULT;
 842                 }
 843                 nesqp = nes_ucontext->mmap_nesqp[index];
 844                 if (nesqp == NULL) {
 845                         nes_debug(NES_DBG_MMAP, "wq %lu has a NULL QP base.\n", index);
 846                         return -EFAULT;
 847                 }
 848                 if (remap_pfn_range(vma, vma->vm_start,
 849                                 virt_to_phys(nesqp->hwqp.sq_vbase) >> PAGE_SHIFT,
 850                                 vma->vm_end - vma->vm_start,
 851                                 vma->vm_page_prot)) {
 852                         nes_debug(NES_DBG_MMAP, "remap_pfn_range failed.\n");
 853                         return -EAGAIN;
 854                 }
 855                 vma->vm_private_data = nesqp;
 856                 return 0;
 857         } else {
 858                 index = vma->vm_pgoff;
 859                 if (!test_bit(index, nes_ucontext->allocated_doorbells))
 860                         return -EFAULT;
 861
 862                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 863                 if (io_remap_pfn_range(vma, vma->vm_start,
 864                                 (nesdev->doorbell_start +
 865                                 ((nes_ucontext->mmap_db_index[index] - nesdev->base_doorbell_index) * 4096))
 866                                 >> PAGE_SHIFT, PAGE_SIZE, vma->vm_page_prot))
 867                         return -EAGAIN;
 868                 vma->vm_private_data = nes_ucontext;
 869                 return 0;
 870         }
 871
 872         return -ENOSYS;
 873 }
 874
 875
 876 /**
 877  * nes_alloc_pd
 878  */
 879 static struct ib_pd *nes_alloc_pd(struct ib_device *ibdev,
 880                 struct ib_ucontext *context, struct ib_udata *udata)
 881 {
 882         struct nes_pd *nespd;
 883         struct nes_vnic *nesvnic = to_nesvnic(ibdev);
 884         struct nes_device *nesdev = nesvnic->nesdev;
 885         struct nes_adapter *nesadapter = nesdev->nesadapter;
 886         struct nes_ucontext *nesucontext;
 887         struct nes_alloc_pd_resp uresp;
 888         u32 pd_num = 0;
 889         int err;
 890
 891         nes_debug(NES_DBG_PD, "nesvnic=%p, netdev=%p %s, ibdev=%p, context=%p, netdev refcnt=%u\n",
 892                         nesvnic, nesdev->netdev[0], nesdev->netdev[0]->name, ibdev, context,
 893                         atomic_read(&nesvnic->netdev->refcnt));
 894
 895         err = nes_alloc_resource(nesadapter, nesadapter->allocated_pds,
 896                         nesadapter->max_pd, &pd_num, &nesadapter->next_pd);
 897         if (err) {
 898                 return ERR_PTR(err);
 899         }
 900
 901         nespd = kzalloc(sizeof (struct nes_pd), GFP_KERNEL);
 902         if (!nespd) {
 903                 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
 904                 return ERR_PTR(-ENOMEM);
 905         }
 906
 907         nes_debug(NES_DBG_PD, "Allocating PD (%p) for ib device %s\n",
 908                         nespd, nesvnic->nesibdev->ibdev.name);
 909
 910         nespd->pd_id = (pd_num << (PAGE_SHIFT-12)) + nesadapter->base_pd;
 911
 912         if (context) {
 913                 nesucontext = to_nesucontext(context);
 914                 nespd->mmap_db_index = find_next_zero_bit(nesucontext->allocated_doorbells,
 915                                 NES_MAX_USER_DB_REGIONS, nesucontext->first_free_db);
 916                 nes_debug(NES_DBG_PD, "find_first_zero_biton doorbells returned %u, mapping pd_id %u.\n",
 917                                 nespd->mmap_db_index, nespd->pd_id);
 918                 if (nespd->mmap_db_index >= NES_MAX_USER_DB_REGIONS) {
 919                         nes_debug(NES_DBG_PD, "mmap_db_index > MAX\n");
 920                         nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
 921                         kfree(nespd);
 922                         return ERR_PTR(-ENOMEM);
 923                 }
 924
 925                 uresp.pd_id = nespd->pd_id;
 926                 uresp.mmap_db_index = nespd->mmap_db_index;
 927                 if (ib_copy_to_udata(udata, &uresp, sizeof (struct nes_alloc_pd_resp))) {
 928                         nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
 929                         kfree(nespd);
 930                         return ERR_PTR(-EFAULT);
 931                 }
 932
 933                 set_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
 934                 nesucontext->mmap_db_index[nespd->mmap_db_index] = nespd->pd_id;
 935                 nesucontext->first_free_db = nespd->mmap_db_index + 1;
 936         }
 937
 938         nes_debug(NES_DBG_PD, "PD%u structure located @%p.\n", nespd->pd_id, nespd);
 939         return &nespd->ibpd;
 940 }
 941
 942
 943 /**
 944  * nes_dealloc_pd
 945  */
 946 static int nes_dealloc_pd(struct ib_pd *ibpd)
 947 {
 948         struct nes_ucontext *nesucontext;
 949         struct nes_pd *nespd = to_nespd(ibpd);
 950         struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
 951         struct nes_device *nesdev = nesvnic->nesdev;
 952         struct nes_adapter *nesadapter = nesdev->nesadapter;
 953
 954         if ((ibpd->uobject) && (ibpd->uobject->context)) {
 955                 nesucontext = to_nesucontext(ibpd->uobject->context);
 956                 nes_debug(NES_DBG_PD, "Clearing bit %u from allocated doorbells\n",
 957                                 nespd->mmap_db_index);
 958                 clear_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
 959                 nesucontext->mmap_db_index[nespd->mmap_db_index] = 0;
 960                 if (nesucontext->first_free_db > nespd->mmap_db_index) {
 961                         nesucontext->first_free_db = nespd->mmap_db_index;
 962                 }
 963         }
 964
 965         nes_debug(NES_DBG_PD, "Deallocating PD%u structure located @%p.\n",
 966                         nespd->pd_id, nespd);
 967         nes_free_resource(nesadapter, nesadapter->allocated_pds,
 968                         (nespd->pd_id-nesadapter->base_pd)>>(PAGE_SHIFT-12));
 969         kfree(nespd);
 970
 971         return 0;
 972 }
 973
 974
 975 /**
 976  * nes_create_ah
 977  */
 978 static struct ib_ah *nes_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
 979 {
 980         return ERR_PTR(-ENOSYS);
 981 }
 982
 983
 984 /**
 985  * nes_destroy_ah
 986  */
 987 static int nes_destroy_ah(struct ib_ah *ah)
 988 {
 989         return -ENOSYS;
 990 }
 991
 992
 993 /**
 994  * nes_get_encoded_size
 995  */
 996 static inline u8 nes_get_encoded_size(int *size)
 997 {
 998         u8 encoded_size = 0;
 999         if (*size <= 32) {
1000                 *size = 32;
1001                 encoded_size = 1;
1002         } else if (*size <= 128) {
1003                 *size = 128;
1004                 encoded_size = 2;
1005         } else if (*size <= 512) {
1006                 *size = 512;
1007                 encoded_size = 3;
1008         }
1009         return (encoded_size);
1010 }
1011
1012
1013
1014 /**
1015  * nes_setup_virt_qp
1016  */
1017 static int nes_setup_virt_qp(struct nes_qp *nesqp, struct nes_pbl *nespbl,
1018                 struct nes_vnic *nesvnic, int sq_size, int rq_size)
1019 {
1020         unsigned long flags;
1021         void *mem;
1022         __le64 *pbl = NULL;
1023         __le64 *tpbl;
1024         __le64 *pblbuffer;
1025         struct nes_device *nesdev = nesvnic->nesdev;
1026         struct nes_adapter *nesadapter = nesdev->nesadapter;
1027         u32 pbl_entries;
1028         u8 rq_pbl_entries;
1029         u8 sq_pbl_entries;
1030
1031         pbl_entries = nespbl->pbl_size >> 3;
1032         nes_debug(NES_DBG_QP, "Userspace PBL, pbl_size=%u, pbl_entries = %d pbl_vbase=%p, pbl_pbase=%lx\n",
1033                         nespbl->pbl_size, pbl_entries,
1034                         (void *)nespbl->pbl_vbase,
1035                         (unsigned long) nespbl->pbl_pbase);
1036         pbl = (__le64 *) nespbl->pbl_vbase; /* points to first pbl entry */
1037         /* now lets set the sq_vbase as well as rq_vbase addrs we will assign */
1038         /* the first pbl to be fro the rq_vbase... */
1039         rq_pbl_entries = (rq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
1040         sq_pbl_entries = (sq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
1041         nesqp->hwqp.sq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
1042         if (!nespbl->page) {
1043                 nes_debug(NES_DBG_QP, "QP nespbl->page is NULL \n");
1044                 kfree(nespbl);
1045                 return -ENOMEM;
1046         }
1047
1048         nesqp->hwqp.sq_vbase = kmap(nespbl->page);
1049         nesqp->page = nespbl->page;
1050         if (!nesqp->hwqp.sq_vbase) {
1051                 nes_debug(NES_DBG_QP, "QP sq_vbase kmap failed\n");
1052                 kfree(nespbl);
1053                 return -ENOMEM;
1054         }
1055
1056         /* Now to get to sq.. we need to calculate how many */
1057         /* PBL entries were used by the rq.. */
1058         pbl += sq_pbl_entries;
1059         nesqp->hwqp.rq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
1060         /* nesqp->hwqp.rq_vbase = bus_to_virt(*pbl); */
1061         /*nesqp->hwqp.rq_vbase = phys_to_virt(*pbl); */
1062
1063         nes_debug(NES_DBG_QP, "QP sq_vbase= %p sq_pbase=%lx rq_vbase=%p rq_pbase=%lx\n",
1064                   nesqp->hwqp.sq_vbase, (unsigned long) nesqp->hwqp.sq_pbase,
1065                   nesqp->hwqp.rq_vbase, (unsigned long) nesqp->hwqp.rq_pbase);
1066         spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1067         if (!nesadapter->free_256pbl) {
1068                 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1069                                 nespbl->pbl_pbase);
1070                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1071                 kunmap(nesqp->page);
1072                 kfree(nespbl);
1073                 return -ENOMEM;
1074         }
1075         nesadapter->free_256pbl--;
1076         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1077
1078         nesqp->pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 256, &nesqp->pbl_pbase);
1079         pblbuffer = nesqp->pbl_vbase;
1080         if (!nesqp->pbl_vbase) {
1081                 /* memory allocated during nes_reg_user_mr() */
1082                 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1083                                     nespbl->pbl_pbase);
1084                 kfree(nespbl);
1085                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1086                 nesadapter->free_256pbl++;
1087                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1088                 kunmap(nesqp->page);
1089                 return -ENOMEM;
1090         }
1091         memset(nesqp->pbl_vbase, 0, 256);
1092         /* fill in the page address in the pbl buffer.. */
1093         tpbl = pblbuffer + 16;
1094         pbl = (__le64 *)nespbl->pbl_vbase;
1095         while (sq_pbl_entries--)
1096                 *tpbl++ = *pbl++;
1097         tpbl = pblbuffer;
1098         while (rq_pbl_entries--)
1099                 *tpbl++ = *pbl++;
1100
1101         /* done with memory allocated during nes_reg_user_mr() */
1102         pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1103                             nespbl->pbl_pbase);
1104         kfree(nespbl);
1105
1106         nesqp->qp_mem_size =
1107                         max((u32)sizeof(struct nes_qp_context), ((u32)256)) + 256;     /* this is Q2 */
1108         /* Round up to a multiple of a page */
1109         nesqp->qp_mem_size += PAGE_SIZE - 1;
1110         nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
1111
1112         mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1113                         &nesqp->hwqp.q2_pbase);
1114
1115         if (!mem) {
1116                 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase);
1117                 nesqp->pbl_vbase = NULL;
1118                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1119                 nesadapter->free_256pbl++;
1120                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1121                 kunmap(nesqp->page);
1122                 return -ENOMEM;
1123         }
1124         nesqp->hwqp.q2_vbase = mem;
1125         mem += 256;
1126         memset(nesqp->hwqp.q2_vbase, 0, 256);
1127         nesqp->nesqp_context = mem;
1128         memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
1129         nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
1130
1131         return 0;
1132 }
1133
1134
1135 /**
1136  * nes_setup_mmap_qp
1137  */
1138 static int nes_setup_mmap_qp(struct nes_qp *nesqp, struct nes_vnic *nesvnic,
1139                 int sq_size, int rq_size)
1140 {
1141         void *mem;
1142         struct nes_device *nesdev = nesvnic->nesdev;
1143
1144         nesqp->qp_mem_size = (sizeof(struct nes_hw_qp_wqe) * sq_size) +
1145                         (sizeof(struct nes_hw_qp_wqe) * rq_size) +
1146                         max((u32)sizeof(struct nes_qp_context), ((u32)256)) +
1147                         256; /* this is Q2 */
1148         /* Round up to a multiple of a page */
1149         nesqp->qp_mem_size += PAGE_SIZE - 1;
1150         nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
1151
1152         mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1153                         &nesqp->hwqp.sq_pbase);
1154         if (!mem)
1155                 return -ENOMEM;
1156         nes_debug(NES_DBG_QP, "PCI consistent memory for "
1157                         "host descriptor rings located @ %p (pa = 0x%08lX.) size = %u.\n",
1158                         mem, (unsigned long)nesqp->hwqp.sq_pbase, nesqp->qp_mem_size);
1159
1160         memset(mem, 0, nesqp->qp_mem_size);
1161
1162         nesqp->hwqp.sq_vbase = mem;
1163         mem += sizeof(struct nes_hw_qp_wqe) * sq_size;
1164
1165         nesqp->hwqp.rq_vbase = mem;
1166         nesqp->hwqp.rq_pbase = nesqp->hwqp.sq_pbase +
1167                         sizeof(struct nes_hw_qp_wqe) * sq_size;
1168         mem += sizeof(struct nes_hw_qp_wqe) * rq_size;
1169
1170         nesqp->hwqp.q2_vbase = mem;
1171         nesqp->hwqp.q2_pbase = nesqp->hwqp.rq_pbase +
1172                         sizeof(struct nes_hw_qp_wqe) * rq_size;
1173         mem += 256;
1174         memset(nesqp->hwqp.q2_vbase, 0, 256);
1175
1176         nesqp->nesqp_context = mem;
1177         nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
1178         memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
1179         return 0;
1180 }
1181
1182
1183 /**
1184  * nes_free_qp_mem() is to free up the qp's pci_alloc_consistent() memory.
1185  */
1186 static inline void nes_free_qp_mem(struct nes_device *nesdev,
1187                 struct nes_qp *nesqp, int virt_wqs)
1188 {
1189         unsigned long flags;
1190         struct nes_adapter *nesadapter = nesdev->nesadapter;
1191         if (!virt_wqs) {
1192                 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1193                                 nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase);
1194         }else {
1195                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1196                 nesadapter->free_256pbl++;
1197                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1198                 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size, nesqp->hwqp.q2_vbase, nesqp->hwqp.q2_pbase);
1199                 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase );
1200                 nesqp->pbl_vbase = NULL;
1201                 kunmap(nesqp->page);
1202         }
1203 }
1204
1205
1206 /**
1207  * nes_create_qp
1208  */
1209 static struct ib_qp *nes_create_qp(struct ib_pd *ibpd,
1210                 struct ib_qp_init_attr *init_attr, struct ib_udata *udata)
1211 {
1212         u64 u64temp= 0;
1213         u64 u64nesqp = 0;
1214         struct nes_pd *nespd = to_nespd(ibpd);
1215         struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
1216         struct nes_device *nesdev = nesvnic->nesdev;
1217         struct nes_adapter *nesadapter = nesdev->nesadapter;
1218         struct nes_qp *nesqp;
1219         struct nes_cq *nescq;
1220         struct nes_ucontext *nes_ucontext;
1221         struct nes_hw_cqp_wqe *cqp_wqe;
1222         struct nes_cqp_request *cqp_request;
1223         struct nes_create_qp_req req;
1224         struct nes_create_qp_resp uresp;
1225         struct nes_pbl  *nespbl = NULL;
1226         u32 qp_num = 0;
1227         u32 opcode = 0;
1228         /* u32 counter = 0; */
1229         void *mem;
1230         unsigned long flags;
1231         int ret;
1232         int err;
1233         int virt_wqs = 0;
1234         int sq_size;
1235         int rq_size;
1236         u8 sq_encoded_size;
1237         u8 rq_encoded_size;
1238         /* int counter; */
1239
1240         if (init_attr->create_flags)
1241                 return ERR_PTR(-EINVAL);
1242
1243         atomic_inc(&qps_created);
1244         switch (init_attr->qp_type) {
1245                 case IB_QPT_RC:
1246                         if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) {
1247                                 init_attr->cap.max_inline_data = 0;
1248                         } else {
1249                                 init_attr->cap.max_inline_data = 64;
1250                         }
1251                         sq_size = init_attr->cap.max_send_wr;
1252                         rq_size = init_attr->cap.max_recv_wr;
1253
1254                         /* check if the encoded sizes are OK or not... */
1255                         sq_encoded_size = nes_get_encoded_size(&sq_size);
1256                         rq_encoded_size = nes_get_encoded_size(&rq_size);
1257
1258                         if ((!sq_encoded_size) || (!rq_encoded_size)) {
1259                                 nes_debug(NES_DBG_QP, "ERROR bad rq (%u) or sq (%u) size\n",
1260                                                 rq_size, sq_size);
1261                                 return ERR_PTR(-EINVAL);
1262                         }
1263
1264                         init_attr->cap.max_send_wr = sq_size -2;
1265                         init_attr->cap.max_recv_wr = rq_size -1;
1266                         nes_debug(NES_DBG_QP, "RQ size=%u, SQ Size=%u\n", rq_size, sq_size);
1267
1268                         ret = nes_alloc_resource(nesadapter, nesadapter->allocated_qps,
1269                                         nesadapter->max_qp, &qp_num, &nesadapter->next_qp);
1270                         if (ret) {
1271                                 return ERR_PTR(ret);
1272                         }
1273
1274                         /* Need 512 (actually now 1024) byte alignment on this structure */
1275                         mem = kzalloc(sizeof(*nesqp)+NES_SW_CONTEXT_ALIGN-1, GFP_KERNEL);
1276                         if (!mem) {
1277                                 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1278                                 nes_debug(NES_DBG_QP, "Unable to allocate QP\n");
1279                                 return ERR_PTR(-ENOMEM);
1280                         }
1281                         u64nesqp = (unsigned long)mem;
1282                         u64nesqp += ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1283                         u64temp = ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1284                         u64nesqp &= ~u64temp;
1285                         nesqp = (struct nes_qp *)(unsigned long)u64nesqp;
1286                         /* nes_debug(NES_DBG_QP, "nesqp=%p, allocated buffer=%p.  Rounded to closest %u\n",
1287                                         nesqp, mem, NES_SW_CONTEXT_ALIGN); */
1288                         nesqp->allocated_buffer = mem;
1289
1290                         if (udata) {
1291                                 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_create_qp_req))) {
1292                                         nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1293                                         kfree(nesqp->allocated_buffer);
1294                                         nes_debug(NES_DBG_QP, "ib_copy_from_udata() Failed \n");
1295                                         return NULL;
1296                                 }
1297                                 if (req.user_wqe_buffers) {
1298                                         virt_wqs = 1;
1299                                 }
1300                                 if ((ibpd->uobject) && (ibpd->uobject->context)) {
1301                                         nesqp->user_mode = 1;
1302                                         nes_ucontext = to_nesucontext(ibpd->uobject->context);
1303                                         if (virt_wqs) {
1304                                                 err = 1;
1305                                                 list_for_each_entry(nespbl, &nes_ucontext->qp_reg_mem_list, list) {
1306                                                         if (nespbl->user_base == (unsigned long )req.user_wqe_buffers) {
1307                                                                 list_del(&nespbl->list);
1308                                                                 err = 0;
1309                                                                 nes_debug(NES_DBG_QP, "Found PBL for virtual QP. nespbl=%p. user_base=0x%lx\n",
1310                                                                           nespbl, nespbl->user_base);
1311                                                                 break;
1312                                                         }
1313                                                 }
1314                                                 if (err) {
1315                                                         nes_debug(NES_DBG_QP, "Didn't Find PBL for virtual QP. address = %llx.\n",
1316                                                                   (long long unsigned int)req.user_wqe_buffers);
1317                                                         nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1318                                                         kfree(nesqp->allocated_buffer);
1319                                                         return ERR_PTR(-EFAULT);
1320                                                 }
1321                                         }
1322
1323                                         nes_ucontext = to_nesucontext(ibpd->uobject->context);
1324                                         nesqp->mmap_sq_db_index =
1325                                                 find_next_zero_bit(nes_ucontext->allocated_wqs,
1326                                                                    NES_MAX_USER_WQ_REGIONS, nes_ucontext->first_free_wq);
1327                                         /* nes_debug(NES_DBG_QP, "find_first_zero_biton wqs returned %u\n",
1328                                                         nespd->mmap_db_index); */
1329                                         if (nesqp->mmap_sq_db_index >= NES_MAX_USER_WQ_REGIONS) {
1330                                                 nes_debug(NES_DBG_QP,
1331                                                           "db index > max user regions, failing create QP\n");
1332                                                 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1333                                                 if (virt_wqs) {
1334                                                         pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1335                                                                             nespbl->pbl_pbase);
1336                                                         kfree(nespbl);
1337                                                 }
1338                                                 kfree(nesqp->allocated_buffer);
1339                                                 return ERR_PTR(-ENOMEM);
1340                                         }
1341                                         set_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1342                                         nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = nesqp;
1343                                         nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index + 1;
1344                                 } else {
1345                                         nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1346                                         kfree(nesqp->allocated_buffer);
1347                                         return ERR_PTR(-EFAULT);
1348                                 }
1349                         }
1350                         err = (!virt_wqs) ? nes_setup_mmap_qp(nesqp, nesvnic, sq_size, rq_size) :
1351                                         nes_setup_virt_qp(nesqp, nespbl, nesvnic, sq_size, rq_size);
1352                         if (err) {
1353                                 nes_debug(NES_DBG_QP,
1354                                           "error geting qp mem code = %d\n", err);
1355                                 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1356                                 kfree(nesqp->allocated_buffer);
1357                                 return ERR_PTR(-ENOMEM);
1358                         }
1359
1360                         nesqp->hwqp.sq_size = sq_size;
1361                         nesqp->hwqp.sq_encoded_size = sq_encoded_size;
1362                         nesqp->hwqp.sq_head = 1;
1363                         nesqp->hwqp.rq_size = rq_size;
1364                         nesqp->hwqp.rq_encoded_size = rq_encoded_size;
1365                         /* nes_debug(NES_DBG_QP, "nesqp->nesqp_context_pbase = %p\n",
1366                                         (void *)nesqp->nesqp_context_pbase);
1367                         */
1368                         nesqp->hwqp.qp_id = qp_num;
1369                         nesqp->ibqp.qp_num = nesqp->hwqp.qp_id;
1370                         nesqp->nespd = nespd;
1371
1372                         nescq = to_nescq(init_attr->send_cq);
1373                         nesqp->nesscq = nescq;
1374                         nescq = to_nescq(init_attr->recv_cq);
1375                         nesqp->nesrcq = nescq;
1376
1377                         nesqp->nesqp_context->misc |= cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) <<
1378                                         NES_QPCONTEXT_MISC_PCI_FCN_SHIFT);
1379                         nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.rq_encoded_size <<
1380                                         NES_QPCONTEXT_MISC_RQ_SIZE_SHIFT);
1381                         nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.sq_encoded_size <<
1382                                         NES_QPCONTEXT_MISC_SQ_SIZE_SHIFT);
1383                         if (!udata) {
1384                                 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_PRIV_EN);
1385                                 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_FAST_REGISTER_EN);
1386                         }
1387                         nesqp->nesqp_context->cqs = cpu_to_le32(nesqp->nesscq->hw_cq.cq_number +
1388                                         ((u32)nesqp->nesrcq->hw_cq.cq_number << 16));
1389                         u64temp = (u64)nesqp->hwqp.sq_pbase;
1390                         nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1391                         nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1392
1393
1394                         if (!virt_wqs) {
1395                                 u64temp = (u64)nesqp->hwqp.sq_pbase;
1396                                 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1397                                 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1398                                 u64temp = (u64)nesqp->hwqp.rq_pbase;
1399                                 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1400                                 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1401                         } else {
1402                                 u64temp = (u64)nesqp->pbl_pbase;
1403                                 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1404                                 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1405                         }
1406
1407                         /* nes_debug(NES_DBG_QP, "next_qp_nic_index=%u, using nic_index=%d\n",
1408                                         nesvnic->next_qp_nic_index,
1409                                         nesvnic->qp_nic_index[nesvnic->next_qp_nic_index]); */
1410                         spin_lock_irqsave(&nesdev->cqp.lock, flags);
1411                         nesqp->nesqp_context->misc2 |= cpu_to_le32(
1412                                         (u32)nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] <<
1413                                         NES_QPCONTEXT_MISC2_NIC_INDEX_SHIFT);
1414                         nesvnic->next_qp_nic_index++;
1415                         if ((nesvnic->next_qp_nic_index > 3) ||
1416                                         (nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] == 0xf)) {
1417                                 nesvnic->next_qp_nic_index = 0;
1418                         }
1419                         spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
1420
1421                         nesqp->nesqp_context->pd_index_wscale |= cpu_to_le32((u32)nesqp->nespd->pd_id << 16);
1422                         u64temp = (u64)nesqp->hwqp.q2_pbase;
1423                         nesqp->nesqp_context->q2_addr_low = cpu_to_le32((u32)u64temp);
1424                         nesqp->nesqp_context->q2_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1425                         nesqp->nesqp_context->aeq_token_low =  cpu_to_le32((u32)((unsigned long)(nesqp)));
1426                         nesqp->nesqp_context->aeq_token_high =  cpu_to_le32((u32)(upper_32_bits((unsigned long)(nesqp))));
1427                         nesqp->nesqp_context->ird_ord_sizes = cpu_to_le32(NES_QPCONTEXT_ORDIRD_ALSMM |
1428                                         ((((u32)nesadapter->max_irrq_wr) <<
1429                                         NES_QPCONTEXT_ORDIRD_IRDSIZE_SHIFT) & NES_QPCONTEXT_ORDIRD_IRDSIZE_MASK));
1430                         if (disable_mpa_crc) {
1431                                 nes_debug(NES_DBG_QP, "Disabling MPA crc checking due to module option.\n");
1432                                 nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32(NES_QPCONTEXT_ORDIRD_RNMC);
1433                         }
1434
1435
1436                         /* Create the QP */
1437                         cqp_request = nes_get_cqp_request(nesdev);
1438                         if (cqp_request == NULL) {
1439                                 nes_debug(NES_DBG_QP, "Failed to get a cqp_request\n");
1440                                 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1441                                 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1442                                 kfree(nesqp->allocated_buffer);
1443                                 return ERR_PTR(-ENOMEM);
1444                         }
1445                         cqp_request->waiting = 1;
1446                         cqp_wqe = &cqp_request->cqp_wqe;
1447
1448                         if (!virt_wqs) {
1449                                 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP |
1450                                         NES_CQP_QP_IWARP_STATE_IDLE;
1451                         } else {
1452                                 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP | NES_CQP_QP_VIRT_WQS |
1453                                         NES_CQP_QP_IWARP_STATE_IDLE;
1454                         }
1455                         opcode |= NES_CQP_QP_CQS_VALID;
1456                         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1457                         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1458                         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
1459
1460                         u64temp = (u64)nesqp->nesqp_context_pbase;
1461                         set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp);
1462
1463                         atomic_set(&cqp_request->refcount, 2);
1464                         nes_post_cqp_request(nesdev, cqp_request);
1465
1466                         /* Wait for CQP */
1467                         nes_debug(NES_DBG_QP, "Waiting for create iWARP QP%u to complete.\n",
1468                                         nesqp->hwqp.qp_id);
1469                         ret = wait_event_timeout(cqp_request->waitq,
1470                                         (cqp_request->request_done != 0), NES_EVENT_TIMEOUT);
1471                         nes_debug(NES_DBG_QP, "Create iwarp QP%u completed, wait_event_timeout ret=%u,"
1472                                         " nesdev->cqp_head = %u, nesdev->cqp.sq_tail = %u,"
1473                                         " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1474                                         nesqp->hwqp.qp_id, ret, nesdev->cqp.sq_head, nesdev->cqp.sq_tail,
1475                                         cqp_request->major_code, cqp_request->minor_code);
1476                         if ((!ret) || (cqp_request->major_code)) {
1477                                 nes_put_cqp_request(nesdev, cqp_request);
1478                                 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1479                                 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1480                                 kfree(nesqp->allocated_buffer);
1481                                 if (!ret) {
1482                                         return ERR_PTR(-ETIME);
1483                                 } else {
1484                                         return ERR_PTR(-EIO);
1485                                 }
1486                         }
1487
1488                         nes_put_cqp_request(nesdev, cqp_request);
1489
1490                         if (ibpd->uobject) {
1491                                 uresp.mmap_sq_db_index = nesqp->mmap_sq_db_index;
1492                                 uresp.actual_sq_size = sq_size;
1493                                 uresp.actual_rq_size = rq_size;
1494                                 uresp.qp_id = nesqp->hwqp.qp_id;
1495                                 uresp.nes_drv_opt = nes_drv_opt;
1496                                 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
1497                                         nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1498                                         nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1499                                         kfree(nesqp->allocated_buffer);
1500                                         return ERR_PTR(-EFAULT);
1501                                 }
1502                         }
1503
1504                         nes_debug(NES_DBG_QP, "QP%u structure located @%p.Size = %u.\n",
1505                                         nesqp->hwqp.qp_id, nesqp, (u32)sizeof(*nesqp));
1506                         spin_lock_init(&nesqp->lock);
1507                         init_waitqueue_head(&nesqp->state_waitq);
1508                         init_waitqueue_head(&nesqp->kick_waitq);
1509                         nes_add_ref(&nesqp->ibqp);
1510                         break;
1511                 default:
1512                         nes_debug(NES_DBG_QP, "Invalid QP type: %d\n", init_attr->qp_type);
1513                         return ERR_PTR(-EINVAL);
1514         }
1515
1516         /* update the QP table */
1517         nesdev->nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = nesqp;
1518         nes_debug(NES_DBG_QP, "netdev refcnt=%u\n",
1519                         atomic_read(&nesvnic->netdev->refcnt));
1520
1521         return &nesqp->ibqp;
1522 }
1523
1524
1525 /**
1526  * nes_clean_cq
1527  */
1528 static void nes_clean_cq(struct nes_qp *nesqp, struct nes_cq *nescq)
1529 {
1530         u32 cq_head;
1531         u32 lo;
1532         u32 hi;
1533         u64 u64temp;
1534         unsigned long flags = 0;
1535
1536         spin_lock_irqsave(&nescq->lock, flags);
1537
1538         cq_head = nescq->hw_cq.cq_head;
1539         while (le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_VALID) {
1540                 rmb();
1541                 lo = le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
1542                 hi = le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX]);
1543                 u64temp = (((u64)hi) << 32) | ((u64)lo);
1544                 u64temp &= ~(NES_SW_CONTEXT_ALIGN-1);
1545                 if (u64temp == (u64)(unsigned long)nesqp) {
1546                         /* Zero the context value so cqe will be ignored */
1547                         nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX] = 0;
1548                         nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX] = 0;
1549                 }
1550
1551                 if (++cq_head >= nescq->hw_cq.cq_size)
1552                         cq_head = 0;
1553         }
1554
1555         spin_unlock_irqrestore(&nescq->lock, flags);
1556 }
1557
1558
1559 /**
1560  * nes_destroy_qp
1561  */
1562 static int nes_destroy_qp(struct ib_qp *ibqp)
1563 {
1564         struct nes_qp *nesqp = to_nesqp(ibqp);
1565         struct nes_ucontext *nes_ucontext;
1566         struct ib_qp_attr attr;
1567         struct iw_cm_id *cm_id;
1568         struct iw_cm_event cm_event;
1569         int ret;
1570
1571         atomic_inc(&sw_qps_destroyed);
1572         nesqp->destroyed = 1;
1573
1574         /* Blow away the connection if it exists. */
1575         if (nesqp->ibqp_state >= IB_QPS_INIT && nesqp->ibqp_state <= IB_QPS_RTS) {
1576                 /* if (nesqp->ibqp_state == IB_QPS_RTS) { */
1577                 attr.qp_state = IB_QPS_ERR;
1578                 nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL);
1579         }
1580
1581         if (((nesqp->ibqp_state == IB_QPS_INIT) ||
1582                         (nesqp->ibqp_state == IB_QPS_RTR)) && (nesqp->cm_id)) {
1583                 cm_id = nesqp->cm_id;
1584                 cm_event.event = IW_CM_EVENT_CONNECT_REPLY;
1585                 cm_event.status = IW_CM_EVENT_STATUS_TIMEOUT;
1586                 cm_event.local_addr = cm_id->local_addr;
1587                 cm_event.remote_addr = cm_id->remote_addr;
1588                 cm_event.private_data = NULL;
1589                 cm_event.private_data_len = 0;
1590
1591                 nes_debug(NES_DBG_QP, "Generating a CM Timeout Event for "
1592                                 "QP%u. cm_id = %p, refcount = %u. \n",
1593                                 nesqp->hwqp.qp_id, cm_id, atomic_read(&nesqp->refcount));
1594
1595                 cm_id->rem_ref(cm_id);
1596                 ret = cm_id->event_handler(cm_id, &cm_event);
1597                 if (ret)
1598                         nes_debug(NES_DBG_QP, "OFA CM event_handler returned, ret=%d\n", ret);
1599         }
1600
1601         if (nesqp->user_mode) {
1602                 if ((ibqp->uobject)&&(ibqp->uobject->context)) {
1603                         nes_ucontext = to_nesucontext(ibqp->uobject->context);
1604                         clear_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1605                         nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = NULL;
1606                         if (nes_ucontext->first_free_wq > nesqp->mmap_sq_db_index) {
1607                                 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index;
1608                         }
1609                 }
1610                 if (nesqp->pbl_pbase)
1611                         kunmap(nesqp->page);
1612         } else {
1613                 /* Clean any pending completions from the cq(s) */
1614                 if (nesqp->nesscq)
1615                         nes_clean_cq(nesqp, nesqp->nesscq);
1616
1617                 if ((nesqp->nesrcq) && (nesqp->nesrcq != nesqp->nesscq))
1618                         nes_clean_cq(nesqp, nesqp->nesrcq);
1619         }
1620
1621         nes_rem_ref(&nesqp->ibqp);
1622         return 0;
1623 }
1624
1625
1626 /**
1627  * nes_create_cq
1628  */
1629 static struct ib_cq *nes_create_cq(struct ib_device *ibdev, int entries,
1630                 int comp_vector,
1631                 struct ib_ucontext *context, struct ib_udata *udata)
1632 {
1633         u64 u64temp;
1634         struct nes_vnic *nesvnic = to_nesvnic(ibdev);
1635         struct nes_device *nesdev = nesvnic->nesdev;
1636         struct nes_adapter *nesadapter = nesdev->nesadapter;
1637         struct nes_cq *nescq;
1638         struct nes_ucontext *nes_ucontext = NULL;
1639         struct nes_cqp_request *cqp_request;
1640         void *mem = NULL;
1641         struct nes_hw_cqp_wqe *cqp_wqe;
1642         struct nes_pbl *nespbl = NULL;
1643         struct nes_create_cq_req req;
1644         struct nes_create_cq_resp resp;
1645         u32 cq_num = 0;
1646         u32 opcode = 0;
1647         u32 pbl_entries = 1;
1648         int err;
1649         unsigned long flags;
1650         int ret;
1651
1652         err = nes_alloc_resource(nesadapter, nesadapter->allocated_cqs,
1653                         nesadapter->max_cq, &cq_num, &nesadapter->next_cq);
1654         if (err) {
1655                 return ERR_PTR(err);
1656         }
1657
1658         nescq = kzalloc(sizeof(struct nes_cq), GFP_KERNEL);
1659         if (!nescq) {
1660                 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1661                 nes_debug(NES_DBG_CQ, "Unable to allocate nes_cq struct\n");
1662                 return ERR_PTR(-ENOMEM);
1663         }
1664
1665         nescq->hw_cq.cq_size = max(entries + 1, 5);
1666         nescq->hw_cq.cq_number = cq_num;
1667         nescq->ibcq.cqe = nescq->hw_cq.cq_size - 1;
1668
1669
1670         if (context) {
1671                 nes_ucontext = to_nesucontext(context);
1672                 if (ib_copy_from_udata(&req, udata, sizeof (struct nes_create_cq_req))) {
1673                         nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1674                         kfree(nescq);
1675                         return ERR_PTR(-EFAULT);
1676                 }
1677                 nesvnic->mcrq_ucontext = nes_ucontext;
1678                 nes_ucontext->mcrqf = req.mcrqf;
1679                 if (nes_ucontext->mcrqf) {
1680                         if (nes_ucontext->mcrqf & 0x80000000)
1681                                 nescq->hw_cq.cq_number = nesvnic->nic.qp_id + 28 + 2 * ((nes_ucontext->mcrqf & 0xf) - 1);
1682                         else if (nes_ucontext->mcrqf & 0x40000000)
1683                                 nescq->hw_cq.cq_number = nes_ucontext->mcrqf & 0xffff;
1684                         else
1685                                 nescq->hw_cq.cq_number = nesvnic->mcrq_qp_id + nes_ucontext->mcrqf-1;
1686                         nescq->mcrqf = nes_ucontext->mcrqf;
1687                         nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1688                 }
1689                 nes_debug(NES_DBG_CQ, "CQ Virtual Address = %08lX, size = %u.\n",
1690                                 (unsigned long)req.user_cq_buffer, entries);
1691                 err = 1;
1692                 list_for_each_entry(nespbl, &nes_ucontext->cq_reg_mem_list, list) {
1693                         if (nespbl->user_base == (unsigned long )req.user_cq_buffer) {
1694                                 list_del(&nespbl->list);
1695                                 err = 0;
1696                                 nes_debug(NES_DBG_CQ, "Found PBL for virtual CQ. nespbl=%p.\n",
1697                                                 nespbl);
1698                                 break;
1699                         }
1700                 }
1701                 if (err) {
1702                         nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1703                         kfree(nescq);
1704                         return ERR_PTR(-EFAULT);
1705                 }
1706
1707                 pbl_entries = nespbl->pbl_size >> 3;
1708                 nescq->cq_mem_size = 0;
1709         } else {
1710                 nescq->cq_mem_size = nescq->hw_cq.cq_size * sizeof(struct nes_hw_cqe);
1711                 nes_debug(NES_DBG_CQ, "Attempting to allocate pci memory (%u entries, %u bytes) for CQ%u.\n",
1712                                 entries, nescq->cq_mem_size, nescq->hw_cq.cq_number);
1713
1714                 /* allocate the physical buffer space */
1715                 mem = pci_alloc_consistent(nesdev->pcidev, nescq->cq_mem_size,
1716                                 &nescq->hw_cq.cq_pbase);
1717                 if (!mem) {
1718                         printk(KERN_ERR PFX "Unable to allocate pci memory for cq\n");
1719                         nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1720                         kfree(nescq);
1721                         return ERR_PTR(-ENOMEM);
1722                 }
1723
1724                 memset(mem, 0, nescq->cq_mem_size);
1725                 nescq->hw_cq.cq_vbase = mem;
1726                 nescq->hw_cq.cq_head = 0;
1727                 nes_debug(NES_DBG_CQ, "CQ%u virtual address @ %p, phys = 0x%08X\n",
1728                                 nescq->hw_cq.cq_number, nescq->hw_cq.cq_vbase,
1729                                 (u32)nescq->hw_cq.cq_pbase);
1730         }
1731
1732         nescq->hw_cq.ce_handler = nes_iwarp_ce_handler;
1733         spin_lock_init(&nescq->lock);
1734
1735         /* send CreateCQ request to CQP */
1736         cqp_request = nes_get_cqp_request(nesdev);
1737         if (cqp_request == NULL) {
1738                 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1739                 if (!context)
1740                         pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1741                                         nescq->hw_cq.cq_pbase);
1742                 else {
1743                         pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1744                                             nespbl->pbl_vbase, nespbl->pbl_pbase);
1745                         kfree(nespbl);
1746                 }
1747
1748                 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1749                 kfree(nescq);
1750                 return ERR_PTR(-ENOMEM);
1751         }
1752         cqp_request->waiting = 1;
1753         cqp_wqe = &cqp_request->cqp_wqe;
1754
1755         opcode = NES_CQP_CREATE_CQ | NES_CQP_CQ_CEQ_VALID |
1756                         NES_CQP_CQ_CHK_OVERFLOW |
1757                         NES_CQP_CQ_CEQE_MASK | ((u32)nescq->hw_cq.cq_size << 16);
1758
1759         spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1760
1761         if (pbl_entries != 1) {
1762                 if (pbl_entries > 32) {
1763                         /* use 4k pbl */
1764                         nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 4k PBL\n", pbl_entries);
1765                         if (nesadapter->free_4kpbl == 0) {
1766                                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1767                                 nes_free_cqp_request(nesdev, cqp_request);
1768                                 if (!context)
1769                                         pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1770                                                         nescq->hw_cq.cq_pbase);
1771                                 else {
1772                                         pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1773                                                             nespbl->pbl_vbase, nespbl->pbl_pbase);
1774                                         kfree(nespbl);
1775                                 }
1776                                 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1777                                 kfree(nescq);
1778                                 return ERR_PTR(-ENOMEM);
1779                         } else {
1780                                 opcode |= (NES_CQP_CQ_VIRT | NES_CQP_CQ_4KB_CHUNK);
1781                                 nescq->virtual_cq = 2;
1782                                 nesadapter->free_4kpbl--;
1783                         }
1784                 } else {
1785                         /* use 256 byte pbl */
1786                         nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 256 byte PBL\n", pbl_entries);
1787                         if (nesadapter->free_256pbl == 0) {
1788                                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1789                                 nes_free_cqp_request(nesdev, cqp_request);
1790                                 if (!context)
1791                                         pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1792                                                         nescq->hw_cq.cq_pbase);
1793                                 else {
1794                                         pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1795                                                             nespbl->pbl_vbase, nespbl->pbl_pbase);
1796                                         kfree(nespbl);
1797                                 }
1798                                 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1799                                 kfree(nescq);
1800                                 return ERR_PTR(-ENOMEM);
1801                         } else {
1802                                 opcode |= NES_CQP_CQ_VIRT;
1803                                 nescq->virtual_cq = 1;
1804                                 nesadapter->free_256pbl--;
1805                         }
1806                 }
1807         }
1808
1809         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1810
1811         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1812         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1813         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1814                         (nescq->hw_cq.cq_number | ((u32)nesdev->ceq_index << 16)));
1815
1816         if (context) {
1817                 if (pbl_entries != 1)
1818                         u64temp = (u64)nespbl->pbl_pbase;
1819                 else
1820                         u64temp = le64_to_cpu(nespbl->pbl_vbase[0]);
1821                 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX,
1822                                 nes_ucontext->mmap_db_index[0]);
1823         } else {
1824                 u64temp = (u64)nescq->hw_cq.cq_pbase;
1825                 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX] = 0;
1826         }
1827         set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_PBL_LOW_IDX, u64temp);
1828         cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] = 0;
1829         u64temp = (u64)(unsigned long)&nescq->hw_cq;
1830         cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_LOW_IDX] =
1831                         cpu_to_le32((u32)(u64temp >> 1));
1832         cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] =
1833                         cpu_to_le32(((u32)((u64temp) >> 33)) & 0x7FFFFFFF);
1834
1835         atomic_set(&cqp_request->refcount, 2);
1836         nes_post_cqp_request(nesdev, cqp_request);
1837
1838         /* Wait for CQP */
1839         nes_debug(NES_DBG_CQ, "Waiting for create iWARP CQ%u to complete.\n",
1840                         nescq->hw_cq.cq_number);
1841         ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1842                         NES_EVENT_TIMEOUT * 2);
1843         nes_debug(NES_DBG_CQ, "Create iWARP CQ%u completed, wait_event_timeout ret = %d.\n",
1844                         nescq->hw_cq.cq_number, ret);
1845         if ((!ret) || (cqp_request->major_code)) {
1846                 nes_put_cqp_request(nesdev, cqp_request);
1847                 if (!context)
1848                         pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1849                                         nescq->hw_cq.cq_pbase);
1850                 else {
1851                         pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1852                                             nespbl->pbl_vbase, nespbl->pbl_pbase);
1853                         kfree(nespbl);
1854                 }
1855                 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1856                 kfree(nescq);
1857                 return ERR_PTR(-EIO);
1858         }
1859         nes_put_cqp_request(nesdev, cqp_request);
1860
1861         if (context) {
1862                 /* free the nespbl */
1863                 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1864                                 nespbl->pbl_pbase);
1865                 kfree(nespbl);
1866                 resp.cq_id = nescq->hw_cq.cq_number;
1867                 resp.cq_size = nescq->hw_cq.cq_size;
1868                 resp.mmap_db_index = 0;
1869                 if (ib_copy_to_udata(udata, &resp, sizeof resp)) {
1870                         nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1871                         kfree(nescq);
1872                         return ERR_PTR(-EFAULT);
1873                 }
1874         }
1875
1876         return &nescq->ibcq;
1877 }
1878
1879
1880 /**
1881  * nes_destroy_cq
1882  */
1883 static int nes_destroy_cq(struct ib_cq *ib_cq)
1884 {
1885         struct nes_cq *nescq;
1886         struct nes_device *nesdev;
1887         struct nes_vnic *nesvnic;
1888         struct nes_adapter *nesadapter;
1889         struct nes_hw_cqp_wqe *cqp_wqe;
1890         struct nes_cqp_request *cqp_request;
1891         unsigned long flags;
1892         u32 opcode = 0;
1893         int ret;
1894
1895         if (ib_cq == NULL)
1896                 return 0;
1897
1898         nescq = to_nescq(ib_cq);
1899         nesvnic = to_nesvnic(ib_cq->device);
1900         nesdev = nesvnic->nesdev;
1901         nesadapter = nesdev->nesadapter;
1902
1903         nes_debug(NES_DBG_CQ, "Destroy CQ%u\n", nescq->hw_cq.cq_number);
1904
1905         /* Send DestroyCQ request to CQP */
1906         cqp_request = nes_get_cqp_request(nesdev);
1907         if (cqp_request == NULL) {
1908                 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1909                 return -ENOMEM;
1910         }
1911         cqp_request->waiting = 1;
1912         cqp_wqe = &cqp_request->cqp_wqe;
1913         opcode = NES_CQP_DESTROY_CQ | (nescq->hw_cq.cq_size << 16);
1914         spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1915         if (nescq->virtual_cq == 1) {
1916                 nesadapter->free_256pbl++;
1917                 if (nesadapter->free_256pbl > nesadapter->max_256pbl) {
1918                         printk(KERN_ERR PFX "%s: free 256B PBLs(%u) has exceeded the max(%u)\n",
1919                                         __func__, nesadapter->free_256pbl, nesadapter->max_256pbl);
1920                 }
1921         } else if (nescq->virtual_cq == 2) {
1922                 nesadapter->free_4kpbl++;
1923                 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl) {
1924                         printk(KERN_ERR PFX "%s: free 4K PBLs(%u) has exceeded the max(%u)\n",
1925                                         __func__, nesadapter->free_4kpbl, nesadapter->max_4kpbl);
1926                 }
1927                 opcode |= NES_CQP_CQ_4KB_CHUNK;
1928         }
1929
1930         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1931
1932         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1933         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1934         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1935                 (nescq->hw_cq.cq_number | ((u32)PCI_FUNC(nesdev->pcidev->devfn) << 16)));
1936         if (!nescq->mcrqf)
1937                 nes_free_resource(nesadapter, nesadapter->allocated_cqs, nescq->hw_cq.cq_number);
1938
1939         atomic_set(&cqp_request->refcount, 2);
1940         nes_post_cqp_request(nesdev, cqp_request);
1941
1942         /* Wait for CQP */
1943         nes_debug(NES_DBG_CQ, "Waiting for destroy iWARP CQ%u to complete.\n",
1944                         nescq->hw_cq.cq_number);
1945         ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1946                         NES_EVENT_TIMEOUT);
1947         nes_debug(NES_DBG_CQ, "Destroy iWARP CQ%u completed, wait_event_timeout ret = %u,"
1948                         " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1949                         nescq->hw_cq.cq_number, ret, cqp_request->major_code,
1950                         cqp_request->minor_code);
1951         if (!ret) {
1952                 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy timeout expired\n",
1953                                         nescq->hw_cq.cq_number);
1954                 ret = -ETIME;
1955         } else if (cqp_request->major_code) {
1956                 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy failed\n",
1957                                         nescq->hw_cq.cq_number);
1958                 ret = -EIO;
1959         } else {
1960                 ret = 0;
1961         }
1962         nes_put_cqp_request(nesdev, cqp_request);
1963
1964         if (nescq->cq_mem_size)
1965                 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size,
1966                                     nescq->hw_cq.cq_vbase, nescq->hw_cq.cq_pbase);
1967         kfree(nescq);
1968
1969         return ret;
1970 }
1971
1972 /**
1973  * root_256
1974  */
1975 static u32 root_256(struct nes_device *nesdev,
1976                     struct nes_root_vpbl *root_vpbl,
1977                     struct nes_root_vpbl *new_root,
1978                     u16 pbl_count_4k)
1979 {
1980         u64 leaf_pbl;
1981         int i, j, k;
1982
1983         if (pbl_count_4k == 1) {
1984                 new_root->pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
1985                                                 512, &new_root->pbl_pbase);
1986
1987                 if (new_root->pbl_vbase == NULL)
1988                         return 0;
1989
1990                 leaf_pbl = (u64)root_vpbl->pbl_pbase;
1991                 for (i = 0; i < 16; i++) {
1992                         new_root->pbl_vbase[i].pa_low =
1993                                 cpu_to_le32((u32)leaf_pbl);
1994                         new_root->pbl_vbase[i].pa_high =
1995                                 cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
1996                         leaf_pbl += 256;
1997                 }
1998         } else {
1999                 for (i = 3; i >= 0; i--) {
2000                         j = i * 16;
2001                         root_vpbl->pbl_vbase[j] = root_vpbl->pbl_vbase[i];
2002                         leaf_pbl = le32_to_cpu(root_vpbl->pbl_vbase[j].pa_low) +
2003                             (((u64)le32_to_cpu(root_vpbl->pbl_vbase[j].pa_high))
2004                                 << 32);
2005                         for (k = 1; k < 16; k++) {
2006                                 leaf_pbl += 256;
2007                                 root_vpbl->pbl_vbase[j + k].pa_low =
2008                                                 cpu_to_le32((u32)leaf_pbl);
2009                                 root_vpbl->pbl_vbase[j + k].pa_high =
2010                                     cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
2011                         }
2012                 }
2013         }
2014
2015         return 1;
2016 }
2017
2018
2019 /**
2020  * nes_reg_mr
2021  */
2022 static int nes_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd,
2023                 u32 stag, u64 region_length, struct nes_root_vpbl *root_vpbl,
2024                 dma_addr_t single_buffer, u16 pbl_count_4k,
2025                 u16 residual_page_count_4k, int acc, u64 *iova_start,
2026                 u16 *actual_pbl_cnt, u8 *used_4k_pbls)
2027 {
2028         struct nes_hw_cqp_wqe *cqp_wqe;
2029         struct nes_cqp_request *cqp_request;
2030         unsigned long flags;
2031         int ret;
2032         struct nes_adapter *nesadapter = nesdev->nesadapter;
2033         uint pg_cnt = 0;
2034         u16 pbl_count_256 = 0;
2035         u16 pbl_count = 0;
2036         u8  use_256_pbls = 0;
2037         u8  use_4k_pbls = 0;
2038         u16 use_two_level = (pbl_count_4k > 1) ? 1 : 0;
2039         struct nes_root_vpbl new_root = {0, 0, 0};
2040         u32 opcode = 0;
2041         u16 major_code;
2042
2043         /* Register the region with the adapter */
2044         cqp_request = nes_get_cqp_request(nesdev);
2045         if (cqp_request == NULL) {
2046                 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
2047                 return -ENOMEM;
2048         }
2049         cqp_request->waiting = 1;
2050         cqp_wqe = &cqp_request->cqp_wqe;
2051
2052         if (pbl_count_4k) {
2053                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2054
2055                 pg_cnt = ((pbl_count_4k - 1) * 512) + residual_page_count_4k;
2056                 pbl_count_256 = (pg_cnt + 31) / 32;
2057                 if (pg_cnt <= 32) {
2058                         if (pbl_count_256 <= nesadapter->free_256pbl)
2059                                 use_256_pbls = 1;
2060                         else if (pbl_count_4k <= nesadapter->free_4kpbl)
2061                                 use_4k_pbls = 1;
2062                 } else if (pg_cnt <= 2048) {
2063                         if (((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) &&
2064                             (nesadapter->free_4kpbl > (nesadapter->max_4kpbl >> 1))) {
2065                                 use_4k_pbls = 1;
2066                         } else if ((pbl_count_256 + 1) <= nesadapter->free_256pbl) {
2067                                 use_256_pbls = 1;
2068                                 use_two_level = 1;
2069                         } else if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
2070                                 use_4k_pbls = 1;
2071                         }
2072                 } else {
2073                         if ((pbl_count_4k + 1) <= nesadapter->free_4kpbl)
2074                                 use_4k_pbls = 1;
2075                 }
2076
2077                 if (use_256_pbls) {
2078                         pbl_count = pbl_count_256;
2079                         nesadapter->free_256pbl -= pbl_count + use_two_level;
2080                 } else if (use_4k_pbls) {
2081                         pbl_count =  pbl_count_4k;
2082                         nesadapter->free_4kpbl -= pbl_count + use_two_level;
2083                 } else {
2084                         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2085                         nes_debug(NES_DBG_MR, "Out of Pbls\n");
2086                         nes_free_cqp_request(nesdev, cqp_request);
2087                         return -ENOMEM;
2088                 }
2089
2090                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2091         }
2092
2093         if (use_256_pbls && use_two_level) {
2094                 if (root_256(nesdev, root_vpbl, &new_root, pbl_count_4k) == 1) {
2095                         if (new_root.pbl_pbase != 0)
2096                                 root_vpbl = &new_root;
2097                 } else {
2098                         spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2099                         nesadapter->free_256pbl += pbl_count_256 + use_two_level;
2100                         use_256_pbls = 0;
2101
2102                         if (pbl_count_4k == 1)
2103                                 use_two_level = 0;
2104                         pbl_count = pbl_count_4k;
2105
2106                         if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
2107                                 nesadapter->free_4kpbl -= pbl_count + use_two_level;
2108                                 use_4k_pbls = 1;
2109                         }
2110                         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2111
2112                         if (use_4k_pbls == 0)
2113                                 return -ENOMEM;
2114                 }
2115         }
2116
2117         opcode = NES_CQP_REGISTER_STAG | NES_CQP_STAG_RIGHTS_LOCAL_READ |
2118                                         NES_CQP_STAG_VA_TO | NES_CQP_STAG_MR;
2119         if (acc & IB_ACCESS_LOCAL_WRITE)
2120                 opcode |= NES_CQP_STAG_RIGHTS_LOCAL_WRITE;
2121         if (acc & IB_ACCESS_REMOTE_WRITE)
2122                 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_REM_ACC_EN;
2123         if (acc & IB_ACCESS_REMOTE_READ)
2124                 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_READ | NES_CQP_STAG_REM_ACC_EN;
2125         if (acc & IB_ACCESS_MW_BIND)
2126                 opcode |= NES_CQP_STAG_RIGHTS_WINDOW_BIND | NES_CQP_STAG_REM_ACC_EN;
2127
2128         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2129         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
2130         set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, *iova_start);
2131         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, region_length);
2132
2133         cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] =
2134                         cpu_to_le32((u32)(region_length >> 8) & 0xff000000);
2135         cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |=
2136                         cpu_to_le32(nespd->pd_id & 0x00007fff);
2137         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
2138
2139         if (pbl_count == 0) {
2140                 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, single_buffer);
2141         } else {
2142                 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, root_vpbl->pbl_pbase);
2143                 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, pbl_count);
2144                 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX, (pg_cnt * 8));
2145
2146                 if (use_4k_pbls)
2147                         cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE);
2148         }
2149         barrier();
2150
2151         atomic_set(&cqp_request->refcount, 2);
2152         nes_post_cqp_request(nesdev, cqp_request);
2153
2154         /* Wait for CQP */
2155         ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
2156                         NES_EVENT_TIMEOUT);
2157         nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
2158                         " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2159                         stag, ret, cqp_request->major_code, cqp_request->minor_code);
2160         major_code = cqp_request->major_code;
2161         nes_put_cqp_request(nesdev, cqp_request);
2162
2163         if ((!ret || major_code) && pbl_count != 0) {
2164                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2165                 if (use_256_pbls)
2166                         nesadapter->free_256pbl += pbl_count + use_two_level;
2167                 else if (use_4k_pbls)
2168                         nesadapter->free_4kpbl += pbl_count + use_two_level;
2169                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2170         }
2171         if (new_root.pbl_pbase)
2172                 pci_free_consistent(nesdev->pcidev, 512, new_root.pbl_vbase,
2173                                     new_root.pbl_pbase);
2174
2175         if (!ret)
2176                 return -ETIME;
2177         else if (major_code)
2178                 return -EIO;
2179
2180         *actual_pbl_cnt = pbl_count + use_two_level;
2181         *used_4k_pbls = use_4k_pbls;
2182         return 0;
2183 }
2184
2185
2186 /**
2187  * nes_reg_phys_mr
2188  */
2189 static struct ib_mr *nes_reg_phys_mr(struct ib_pd *ib_pd,
2190                 struct ib_phys_buf *buffer_list, int num_phys_buf, int acc,
2191                 u64 * iova_start)
2192 {
2193         u64 region_length;
2194         struct nes_pd *nespd = to_nespd(ib_pd);
2195         struct nes_vnic *nesvnic = to_nesvnic(ib_pd->device);
2196         struct nes_device *nesdev = nesvnic->nesdev;
2197         struct nes_adapter *nesadapter = nesdev->nesadapter;
2198         struct nes_mr *nesmr;
2199         struct ib_mr *ibmr;
2200         struct nes_vpbl vpbl;
2201         struct nes_root_vpbl root_vpbl;
2202         u32 stag;
2203         u32 i;
2204         unsigned long mask;
2205         u32 stag_index = 0;
2206         u32 next_stag_index = 0;
2207         u32 driver_key = 0;
2208         u32 root_pbl_index = 0;
2209         u32 cur_pbl_index = 0;
2210         int err = 0, pbl_depth = 0;
2211         int ret = 0;
2212         u16 pbl_count = 0;
2213         u8 single_page = 1;
2214         u8 stag_key = 0;
2215
2216         pbl_depth = 0;
2217         region_length = 0;
2218         vpbl.pbl_vbase = NULL;
2219         root_vpbl.pbl_vbase = NULL;
2220         root_vpbl.pbl_pbase = 0;
2221
2222         get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2223         stag_key = (u8)next_stag_index;
2224
2225         driver_key = 0;
2226
2227         next_stag_index >>= 8;
2228         next_stag_index %= nesadapter->max_mr;
2229         if (num_phys_buf > (1024*512)) {
2230                 return ERR_PTR(-E2BIG);
2231         }
2232
2233         if ((buffer_list[0].addr ^ *iova_start) & ~PAGE_MASK)
2234                 return ERR_PTR(-EINVAL);
2235
2236         err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs, nesadapter->max_mr,
2237                         &stag_index, &next_stag_index);
2238         if (err) {
2239                 return ERR_PTR(err);
2240         }
2241
2242         nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2243         if (!nesmr) {
2244                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2245                 return ERR_PTR(-ENOMEM);
2246         }
2247
2248         for (i = 0; i < num_phys_buf; i++) {
2249
2250                 if ((i & 0x01FF) == 0) {
2251                         if (root_pbl_index == 1) {
2252                                 /* Allocate the root PBL */
2253                                 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 8192,
2254                                                 &root_vpbl.pbl_pbase);
2255                                 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2256                                                 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2257                                 if (!root_vpbl.pbl_vbase) {
2258                                         pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2259                                                         vpbl.pbl_pbase);
2260                                         nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2261                                         kfree(nesmr);
2262                                         return ERR_PTR(-ENOMEM);
2263                                 }
2264                                 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024, GFP_KERNEL);
2265                                 if (!root_vpbl.leaf_vpbl) {
2266                                         pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2267                                                         root_vpbl.pbl_pbase);
2268                                         pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2269                                                         vpbl.pbl_pbase);
2270                                         nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2271                                         kfree(nesmr);
2272                                         return ERR_PTR(-ENOMEM);
2273                                 }
2274                                 root_vpbl.pbl_vbase[0].pa_low = cpu_to_le32((u32)vpbl.pbl_pbase);
2275                                 root_vpbl.pbl_vbase[0].pa_high =
2276                                                 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2277                                 root_vpbl.leaf_vpbl[0] = vpbl;
2278                         }
2279                         /* Allocate a 4K buffer for the PBL */
2280                         vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2281                                         &vpbl.pbl_pbase);
2282                         nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%016lX\n",
2283                                         vpbl.pbl_vbase, (unsigned long)vpbl.pbl_pbase);
2284                         if (!vpbl.pbl_vbase) {
2285                                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2286                                 ibmr = ERR_PTR(-ENOMEM);
2287                                 kfree(nesmr);
2288                                 goto reg_phys_err;
2289                         }
2290                         /* Fill in the root table */
2291                         if (1 <= root_pbl_index) {
2292                                 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2293                                                 cpu_to_le32((u32)vpbl.pbl_pbase);
2294                                 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2295                                                 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2296                                 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2297                         }
2298                         root_pbl_index++;
2299                         cur_pbl_index = 0;
2300                 }
2301
2302                 mask = !buffer_list[i].size;
2303                 if (i != 0)
2304                         mask |= buffer_list[i].addr;
2305                 if (i != num_phys_buf - 1)
2306                         mask |= buffer_list[i].addr + buffer_list[i].size;
2307
2308                 if (mask & ~PAGE_MASK) {
2309                         nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2310                         nes_debug(NES_DBG_MR, "Invalid buffer addr or size\n");
2311                         ibmr = ERR_PTR(-EINVAL);
2312                         kfree(nesmr);
2313                         goto reg_phys_err;
2314                 }
2315
2316                 region_length += buffer_list[i].size;
2317                 if ((i != 0) && (single_page)) {
2318                         if ((buffer_list[i-1].addr+PAGE_SIZE) != buffer_list[i].addr)
2319                                 single_page = 0;
2320                 }
2321                 vpbl.pbl_vbase[cur_pbl_index].pa_low = cpu_to_le32((u32)buffer_list[i].addr & PAGE_MASK);
2322                 vpbl.pbl_vbase[cur_pbl_index++].pa_high =
2323                                 cpu_to_le32((u32)((((u64)buffer_list[i].addr) >> 32)));
2324         }
2325
2326         stag = stag_index << 8;
2327         stag |= driver_key;
2328         stag += (u32)stag_key;
2329
2330         nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%016lX,"
2331                         " length = 0x%016lX, index = 0x%08X\n",
2332                         stag, (unsigned long)*iova_start, (unsigned long)region_length, stag_index);
2333
2334         /* Make the leaf PBL the root if only one PBL */
2335         if (root_pbl_index == 1) {
2336                 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2337         }
2338
2339         if (single_page) {
2340                 pbl_count = 0;
2341         } else {
2342                 pbl_count = root_pbl_index;
2343         }
2344         ret = nes_reg_mr(nesdev, nespd, stag, region_length, &root_vpbl,
2345                         buffer_list[0].addr, pbl_count, (u16)cur_pbl_index, acc, iova_start,
2346                         &nesmr->pbls_used, &nesmr->pbl_4k);
2347
2348         if (ret == 0) {
2349                 nesmr->ibmr.rkey = stag;
2350                 nesmr->ibmr.lkey = stag;
2351                 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2352                 ibmr = &nesmr->ibmr;
2353         } else {
2354                 kfree(nesmr);
2355                 ibmr = ERR_PTR(-ENOMEM);
2356         }
2357
2358         reg_phys_err:
2359         /* free the resources */
2360         if (root_pbl_index == 1) {
2361                 /* single PBL case */
2362                 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, vpbl.pbl_pbase);
2363         } else {
2364                 for (i=0; i<root_pbl_index; i++) {
2365                         pci_free_consistent(nesdev->pcidev, 4096, root_vpbl.leaf_vpbl[i].pbl_vbase,
2366                                         root_vpbl.leaf_vpbl[i].pbl_pbase);
2367                 }
2368                 kfree(root_vpbl.leaf_vpbl);
2369                 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2370                                 root_vpbl.pbl_pbase);
2371         }
2372
2373         return ibmr;
2374 }
2375
2376
2377 /**
2378  * nes_get_dma_mr
2379  */
2380 static struct ib_mr *nes_get_dma_mr(struct ib_pd *pd, int acc)
2381 {
2382         struct ib_phys_buf bl;
2383         u64 kva = 0;
2384
2385         nes_debug(NES_DBG_MR, "\n");
2386
2387         bl.size = (u64)0xffffffffffULL;
2388         bl.addr = 0;
2389         return nes_reg_phys_mr(pd, &bl, 1, acc, &kva);
2390 }
2391
2392
2393 /**
2394  * nes_reg_user_mr
2395  */
2396 static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
2397                 u64 virt, int acc, struct ib_udata *udata)
2398 {
2399         u64 iova_start;
2400         __le64 *pbl;
2401         u64 region_length;
2402         dma_addr_t last_dma_addr = 0;
2403         dma_addr_t first_dma_addr = 0;
2404         struct nes_pd *nespd = to_nespd(pd);
2405         struct nes_vnic *nesvnic = to_nesvnic(pd->device);
2406         struct nes_device *nesdev = nesvnic->nesdev;
2407         struct nes_adapter *nesadapter = nesdev->nesadapter;
2408         struct ib_mr *ibmr = ERR_PTR(-EINVAL);
2409         struct ib_umem_chunk *chunk;
2410         struct nes_ucontext *nes_ucontext;
2411         struct nes_pbl *nespbl;
2412         struct nes_mr *nesmr;
2413         struct ib_umem *region;
2414         struct nes_mem_reg_req req;
2415         struct nes_vpbl vpbl;
2416         struct nes_root_vpbl root_vpbl;
2417         int nmap_index, page_index;
2418         int page_count = 0;
2419         int err, pbl_depth = 0;
2420         int chunk_pages;
2421         int ret;
2422         u32 stag;
2423         u32 stag_index = 0;
2424         u32 next_stag_index;
2425         u32 driver_key;
2426         u32 root_pbl_index = 0;
2427         u32 cur_pbl_index = 0;
2428         u32 skip_pages;
2429         u16 pbl_count;
2430         u8 single_page = 1;
2431         u8 stag_key;
2432
2433         region = ib_umem_get(pd->uobject->context, start, length, acc, 0);
2434         if (IS_ERR(region)) {
2435                 return (struct ib_mr *)region;
2436         }
2437
2438         nes_debug(NES_DBG_MR, "User base = 0x%lX, Virt base = 0x%lX, length = %u,"
2439                         " offset = %u, page size = %u.\n",
2440                         (unsigned long int)start, (unsigned long int)virt, (u32)length,
2441                         region->offset, region->page_size);
2442
2443         skip_pages = ((u32)region->offset) >> 12;
2444
2445         if (ib_copy_from_udata(&req, udata, sizeof(req)))
2446                 return ERR_PTR(-EFAULT);
2447         nes_debug(NES_DBG_MR, "Memory Registration type = %08X.\n", req.reg_type);
2448
2449         switch (req.reg_type) {
2450                 case IWNES_MEMREG_TYPE_MEM:
2451                         pbl_depth = 0;
2452                         region_length = 0;
2453                         vpbl.pbl_vbase = NULL;
2454                         root_vpbl.pbl_vbase = NULL;
2455                         root_vpbl.pbl_pbase = 0;
2456
2457                         get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2458                         stag_key = (u8)next_stag_index;
2459
2460                         driver_key = next_stag_index & 0x70000000;
2461
2462                         next_stag_index >>= 8;
2463                         next_stag_index %= nesadapter->max_mr;
2464
2465                         err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
2466                                         nesadapter->max_mr, &stag_index, &next_stag_index);
2467                         if (err) {
2468                                 ib_umem_release(region);
2469                                 return ERR_PTR(err);
2470                         }
2471
2472                         nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2473                         if (!nesmr) {
2474                                 ib_umem_release(region);
2475                                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2476                                 return ERR_PTR(-ENOMEM);
2477                         }
2478                         nesmr->region = region;
2479
2480                         list_for_each_entry(chunk, &region->chunk_list, list) {
2481                                 nes_debug(NES_DBG_MR, "Chunk: nents = %u, nmap = %u .\n",
2482                                                 chunk->nents, chunk->nmap);
2483                                 for (nmap_index = 0; nmap_index < chunk->nmap; ++nmap_index) {
2484                                         if (sg_dma_address(&chunk->page_list[nmap_index]) & ~PAGE_MASK) {
2485                                                 ib_umem_release(region);
2486                                                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2487                                                 nes_debug(NES_DBG_MR, "Unaligned Memory Buffer: 0x%x\n",
2488                                                                 (unsigned int) sg_dma_address(&chunk->page_list[nmap_index]));
2489                                                 ibmr = ERR_PTR(-EINVAL);
2490                                                 kfree(nesmr);
2491                                                 goto reg_user_mr_err;
2492                                         }
2493
2494                                         if (!sg_dma_len(&chunk->page_list[nmap_index])) {
2495                                                 ib_umem_release(region);
2496                                                 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2497                                                                 stag_index);
2498                                                 nes_debug(NES_DBG_MR, "Invalid Buffer Size\n");
2499                                                 ibmr = ERR_PTR(-EINVAL);
2500                                                 kfree(nesmr);
2501                                                 goto reg_user_mr_err;
2502                                         }
2503
2504                                         region_length += sg_dma_len(&chunk->page_list[nmap_index]);
2505                                         chunk_pages = sg_dma_len(&chunk->page_list[nmap_index]) >> 12;
2506                                         region_length -= skip_pages << 12;
2507                                         for (page_index=skip_pages; page_index < chunk_pages; page_index++) {
2508                                                 skip_pages = 0;
2509                                                 if ((page_count!=0)&&(page_count<<12)-(region->offset&(4096-1))>=region->length)
2510                                                         goto enough_pages;
2511                                                 if ((page_count&0x01FF) == 0) {
2512                                                         if (page_count >= 1024 * 512) {
2513                                                                 ib_umem_release(region);
2514                                                                 nes_free_resource(nesadapter,
2515                                                                                 nesadapter->allocated_mrs, stag_index);
2516                                                                 kfree(nesmr);
2517                                                                 ibmr = ERR_PTR(-E2BIG);
2518                                                                 goto reg_user_mr_err;
2519                                                         }
2520                                                         if (root_pbl_index == 1) {
2521                                                                 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
2522                                                                                 8192, &root_vpbl.pbl_pbase);
2523                                                                 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2524                                                                                 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2525                                                                 if (!root_vpbl.pbl_vbase) {
2526                                                                         ib_umem_release(region);
2527                                                                         pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2528                                                                                         vpbl.pbl_pbase);
2529                                                                         nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2530                                                                                         stag_index);
2531                                                                         kfree(nesmr);
2532                                                                         ibmr = ERR_PTR(-ENOMEM);
2533                                                                         goto reg_user_mr_err;
2534                                                                 }
2535                                                                 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024,
2536                                                                                 GFP_KERNEL);
2537                                                                 if (!root_vpbl.leaf_vpbl) {
2538                                                                         ib_umem_release(region);
2539                                                                         pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2540                                                                                         root_vpbl.pbl_pbase);
2541                                                                         pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2542                                                                                         vpbl.pbl_pbase);
2543                                                                         nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2544                                                                                         stag_index);
2545                                                                         kfree(nesmr);
2546                                                                         ibmr = ERR_PTR(-ENOMEM);
2547                                                                         goto reg_user_mr_err;
2548                                                                 }
2549                                                                 root_vpbl.pbl_vbase[0].pa_low =
2550                                                                                 cpu_to_le32((u32)vpbl.pbl_pbase);
2551                                                                 root_vpbl.pbl_vbase[0].pa_high =
2552                                                                                 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2553                                                                 root_vpbl.leaf_vpbl[0] = vpbl;
2554                                                         }
2555                                                         vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2556                                                                         &vpbl.pbl_pbase);
2557                                                         nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%08X\n",
2558                                                                         vpbl.pbl_vbase, (unsigned int)vpbl.pbl_pbase);
2559                                                         if (!vpbl.pbl_vbase) {
2560                                                                 ib_umem_release(region);
2561                                                                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2562                                                                 ibmr = ERR_PTR(-ENOMEM);
2563                                                                 kfree(nesmr);
2564                                                                 goto reg_user_mr_err;
2565                                                         }
2566                                                         if (1 <= root_pbl_index) {
2567                                                                 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2568                                                                                 cpu_to_le32((u32)vpbl.pbl_pbase);
2569                                                                 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2570                                                                                 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase)>>32)));
2571                                                                 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2572                                                         }
2573                                                         root_pbl_index++;
2574                                                         cur_pbl_index = 0;
2575                                                 }
2576                                                 if (single_page) {
2577                                                         if (page_count != 0) {
2578                                                                 if ((last_dma_addr+4096) !=
2579                                                                                 (sg_dma_address(&chunk->page_list[nmap_index])+
2580                                                                                 (page_index*4096)))
2581                                                                         single_page = 0;
2582                                                                 last_dma_addr = sg_dma_address(&chunk->page_list[nmap_index])+
2583                                                                                 (page_index*4096);
2584                                                         } else {
2585                                                                 first_dma_addr = sg_dma_address(&chunk->page_list[nmap_index])+
2586                                                                                 (page_index*4096);
2587                                                                 last_dma_addr = first_dma_addr;
2588                                                         }
2589                                                 }
2590
2591                                                 vpbl.pbl_vbase[cur_pbl_index].pa_low =
2592                                                                 cpu_to_le32((u32)(sg_dma_address(&chunk->page_list[nmap_index])+
2593                                                                 (page_index*4096)));
2594                                                 vpbl.pbl_vbase[cur_pbl_index].pa_high =
2595                                                                 cpu_to_le32((u32)((((u64)(sg_dma_address(&chunk->page_list[nmap_index])+
2596                                                                 (page_index*4096))) >> 32)));
2597                                                 cur_pbl_index++;
2598                                                 page_count++;
2599                                         }
2600                                 }
2601                         }
2602                         enough_pages:
2603                         nes_debug(NES_DBG_MR, "calculating stag, stag_index=0x%08x, driver_key=0x%08x,"
2604                                         " stag_key=0x%08x\n",
2605                                         stag_index, driver_key, stag_key);
2606                         stag = stag_index << 8;
2607                         stag |= driver_key;
2608                         stag += (u32)stag_key;
2609                         if (stag == 0) {
2610                                 stag = 1;
2611                         }
2612
2613                         iova_start = virt;
2614                         /* Make the leaf PBL the root if only one PBL */
2615                         if (root_pbl_index == 1) {
2616                                 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2617                         }
2618
2619                         if (single_page) {
2620                                 pbl_count = 0;
2621                         } else {
2622                                 pbl_count = root_pbl_index;
2623                                 first_dma_addr = 0;
2624                         }
2625                         nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%08X, length = 0x%08X,"
2626                                         " index = 0x%08X, region->length=0x%08llx, pbl_count = %u\n",
2627                                         stag, (unsigned int)iova_start,
2628                                         (unsigned int)region_length, stag_index,
2629                                         (unsigned long long)region->length, pbl_count);
2630                         ret = nes_reg_mr(nesdev, nespd, stag, region->length, &root_vpbl,
2631                                          first_dma_addr, pbl_count, (u16)cur_pbl_index, acc,
2632                                          &iova_start, &nesmr->pbls_used, &nesmr->pbl_4k);
2633
2634                         nes_debug(NES_DBG_MR, "ret=%d\n", ret);
2635
2636                         if (ret == 0) {
2637                                 nesmr->ibmr.rkey = stag;
2638                                 nesmr->ibmr.lkey = stag;
2639                                 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2640                                 ibmr = &nesmr->ibmr;
2641                         } else {
2642                                 ib_umem_release(region);
2643                                 kfree(nesmr);
2644                                 ibmr = ERR_PTR(-ENOMEM);
2645                         }
2646
2647                         reg_user_mr_err:
2648                         /* free the resources */
2649                         if (root_pbl_index == 1) {
2650                                 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2651                                                 vpbl.pbl_pbase);
2652                         } else {
2653                                 for (page_index=0; page_index<root_pbl_index; page_index++) {
2654                                         pci_free_consistent(nesdev->pcidev, 4096,
2655                                                         root_vpbl.leaf_vpbl[page_index].pbl_vbase,
2656                                                         root_vpbl.leaf_vpbl[page_index].pbl_pbase);
2657                                 }
2658                                 kfree(root_vpbl.leaf_vpbl);
2659                                 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2660                                                 root_vpbl.pbl_pbase);
2661                         }
2662
2663                         nes_debug(NES_DBG_MR, "Leaving, ibmr=%p", ibmr);
2664
2665                         return ibmr;
2666                 case IWNES_MEMREG_TYPE_QP:
2667                 case IWNES_MEMREG_TYPE_CQ:
2668                         nespbl = kzalloc(sizeof(*nespbl), GFP_KERNEL);
2669                         if (!nespbl) {
2670                                 nes_debug(NES_DBG_MR, "Unable to allocate PBL\n");
2671                                 ib_umem_release(region);
2672                                 return ERR_PTR(-ENOMEM);
2673                         }
2674                         nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2675                         if (!nesmr) {
2676                                 ib_umem_release(region);
2677                                 kfree(nespbl);
2678                                 nes_debug(NES_DBG_MR, "Unable to allocate nesmr\n");
2679                                 return ERR_PTR(-ENOMEM);
2680                         }
2681                         nesmr->region = region;
2682                         nes_ucontext = to_nesucontext(pd->uobject->context);
2683                         pbl_depth = region->length >> 12;
2684                         pbl_depth += (region->length & (4096-1)) ? 1 : 0;
2685                         nespbl->pbl_size = pbl_depth*sizeof(u64);
2686                         if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2687                                 nes_debug(NES_DBG_MR, "Attempting to allocate QP PBL memory");
2688                         } else {
2689                                 nes_debug(NES_DBG_MR, "Attempting to allocate CP PBL memory");
2690                         }
2691
2692                         nes_debug(NES_DBG_MR, " %u bytes, %u entries.\n",
2693                                         nespbl->pbl_size, pbl_depth);
2694                         pbl = pci_alloc_consistent(nesdev->pcidev, nespbl->pbl_size,
2695                                         &nespbl->pbl_pbase);
2696                         if (!pbl) {
2697                                 ib_umem_release(region);
2698                                 kfree(nesmr);
2699                                 kfree(nespbl);
2700                                 nes_debug(NES_DBG_MR, "Unable to allocate PBL memory\n");
2701                                 return ERR_PTR(-ENOMEM);
2702                         }
2703
2704                         nespbl->pbl_vbase = (u64 *)pbl;
2705                         nespbl->user_base = start;
2706                         nes_debug(NES_DBG_MR, "Allocated PBL memory, %u bytes, pbl_pbase=%lx,"
2707                                         " pbl_vbase=%p user_base=0x%lx\n",
2708                                   nespbl->pbl_size, (unsigned long) nespbl->pbl_pbase,
2709                                   (void *) nespbl->pbl_vbase, nespbl->user_base);
2710
2711                         list_for_each_entry(chunk, &region->chunk_list, list) {
2712                                 for (nmap_index = 0; nmap_index < chunk->nmap; ++nmap_index) {
2713                                         chunk_pages = sg_dma_len(&chunk->page_list[nmap_index]) >> 12;
2714                                         chunk_pages += (sg_dma_len(&chunk->page_list[nmap_index]) & (4096-1)) ? 1 : 0;
2715                                         nespbl->page = sg_page(&chunk->page_list[0]);
2716                                         for (page_index=0; page_index<chunk_pages; page_index++) {
2717                                                 ((__le32 *)pbl)[0] = cpu_to_le32((u32)
2718                                                                 (sg_dma_address(&chunk->page_list[nmap_index])+
2719                                                                 (page_index*4096)));
2720                                                 ((__le32 *)pbl)[1] = cpu_to_le32(((u64)
2721                                                                 (sg_dma_address(&chunk->page_list[nmap_index])+
2722                                                                 (page_index*4096)))>>32);
2723                                                 nes_debug(NES_DBG_MR, "pbl=%p, *pbl=0x%016llx, 0x%08x%08x\n", pbl,
2724                                                                 (unsigned long long)*pbl,
2725                                                                 le32_to_cpu(((__le32 *)pbl)[1]), le32_to_cpu(((__le32 *)pbl)[0]));
2726                                                 pbl++;
2727                                         }
2728                                 }
2729                         }
2730                         if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2731                                 list_add_tail(&nespbl->list, &nes_ucontext->qp_reg_mem_list);
2732                         } else {
2733                                 list_add_tail(&nespbl->list, &nes_ucontext->cq_reg_mem_list);
2734                         }
2735                         nesmr->ibmr.rkey = -1;
2736                         nesmr->ibmr.lkey = -1;
2737                         nesmr->mode = req.reg_type;
2738                         return &nesmr->ibmr;
2739         }
2740
2741         return ERR_PTR(-ENOSYS);
2742 }
2743
2744
2745 /**
2746  * nes_dereg_mr
2747  */
2748 static int nes_dereg_mr(struct ib_mr *ib_mr)
2749 {
2750         struct nes_mr *nesmr = to_nesmr(ib_mr);
2751         struct nes_vnic *nesvnic = to_nesvnic(ib_mr->device);
2752         struct nes_device *nesdev = nesvnic->nesdev;
2753         struct nes_adapter *nesadapter = nesdev->nesadapter;
2754         struct nes_hw_cqp_wqe *cqp_wqe;
2755         struct nes_cqp_request *cqp_request;
2756         unsigned long flags;
2757         int ret;
2758         u16 major_code;
2759         u16 minor_code;
2760
2761         if (nesmr->region) {
2762                 ib_umem_release(nesmr->region);
2763         }
2764         if (nesmr->mode != IWNES_MEMREG_TYPE_MEM) {
2765                 kfree(nesmr);
2766                 return 0;
2767         }
2768
2769         /* Deallocate the region with the adapter */
2770
2771         cqp_request = nes_get_cqp_request(nesdev);
2772         if (cqp_request == NULL) {
2773                 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
2774                 return -ENOMEM;
2775         }
2776         cqp_request->waiting = 1;
2777         cqp_wqe = &cqp_request->cqp_wqe;
2778
2779         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2780         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2781                         NES_CQP_DEALLOCATE_STAG | NES_CQP_STAG_VA_TO |
2782                         NES_CQP_STAG_DEALLOC_PBLS | NES_CQP_STAG_MR);
2783         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ib_mr->rkey);
2784
2785         atomic_set(&cqp_request->refcount, 2);
2786         nes_post_cqp_request(nesdev, cqp_request);
2787
2788         /* Wait for CQP */
2789         nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X completed\n", ib_mr->rkey);
2790         ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2791                         NES_EVENT_TIMEOUT);
2792         nes_debug(NES_DBG_MR, "Deallocate STag 0x%08X completed, wait_event_timeout ret = %u,"
2793                         " CQP Major:Minor codes = 0x%04X:0x%04X\n",
2794                         ib_mr->rkey, ret, cqp_request->major_code, cqp_request->minor_code);
2795
2796         major_code = cqp_request->major_code;
2797         minor_code = cqp_request->minor_code;
2798
2799         nes_put_cqp_request(nesdev, cqp_request);
2800
2801         if (!ret) {
2802                 nes_debug(NES_DBG_MR, "Timeout waiting to destroy STag,"
2803                                 " ib_mr=%p, rkey = 0x%08X\n",
2804                                 ib_mr, ib_mr->rkey);
2805                 return -ETIME;
2806         } else if (major_code) {
2807                 nes_debug(NES_DBG_MR, "Error (0x%04X:0x%04X) while attempting"
2808                                 " to destroy STag, ib_mr=%p, rkey = 0x%08X\n",
2809                                 major_code, minor_code, ib_mr, ib_mr->rkey);
2810                 return -EIO;
2811         }
2812
2813         if (nesmr->pbls_used != 0) {
2814                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2815                 if (nesmr->pbl_4k) {
2816                         nesadapter->free_4kpbl += nesmr->pbls_used;
2817                         if (nesadapter->free_4kpbl > nesadapter->max_4kpbl)
2818                                 printk(KERN_ERR PFX "free 4KB PBLs(%u) has "
2819                                         "exceeded the max(%u)\n",
2820                                         nesadapter->free_4kpbl,
2821                                         nesadapter->max_4kpbl);
2822                 } else {
2823                         nesadapter->free_256pbl += nesmr->pbls_used;
2824                         if (nesadapter->free_256pbl > nesadapter->max_256pbl)
2825                                 printk(KERN_ERR PFX "free 256B PBLs(%u) has "
2826                                         "exceeded the max(%u)\n",
2827                                         nesadapter->free_256pbl,
2828                                         nesadapter->max_256pbl);
2829                 }
2830                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2831         }
2832         nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2833                         (ib_mr->rkey & 0x0fffff00) >> 8);
2834
2835         kfree(nesmr);
2836
2837         return 0;
2838 }
2839
2840
2841 /**
2842  * show_rev
2843  */
2844 static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
2845                         char *buf)
2846 {
2847         struct nes_ib_device *nesibdev =
2848                         container_of(dev, struct nes_ib_device, ibdev.dev);
2849         struct nes_vnic *nesvnic = nesibdev->nesvnic;
2850
2851         nes_debug(NES_DBG_INIT, "\n");
2852         return sprintf(buf, "%x\n", nesvnic->nesdev->nesadapter->hw_rev);
2853 }
2854
2855
2856 /**
2857  * show_fw_ver
2858  */
2859 static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr,
2860                            char *buf)
2861 {
2862         struct nes_ib_device *nesibdev =
2863                         container_of(dev, struct nes_ib_device, ibdev.dev);
2864         struct nes_vnic *nesvnic = nesibdev->nesvnic;
2865
2866         nes_debug(NES_DBG_INIT, "\n");
2867         return sprintf(buf, "%u.%u\n",
2868                 (nesvnic->nesdev->nesadapter->firmware_version >> 16),
2869                 (nesvnic->nesdev->nesadapter->firmware_version & 0x000000ff));
2870 }
2871
2872
2873 /**
2874  * show_hca
2875  */
2876 static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
2877                         char *buf)
2878 {
2879         nes_debug(NES_DBG_INIT, "\n");
2880         return sprintf(buf, "NES020\n");
2881 }
2882
2883
2884 /**
2885  * show_board
2886  */
2887 static ssize_t show_board(struct device *dev, struct device_attribute *attr,
2888                           char *buf)
2889 {
2890         nes_debug(NES_DBG_INIT, "\n");
2891         return sprintf(buf, "%.*s\n", 32, "NES020 Board ID");
2892 }
2893
2894
2895 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
2896 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
2897 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
2898 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
2899
2900 static struct device_attribute *nes_dev_attributes[] = {
2901         &dev_attr_hw_rev,
2902         &dev_attr_fw_ver,
2903         &dev_attr_hca_type,
2904         &dev_attr_board_id
2905 };
2906
2907
2908 /**
2909  * nes_query_qp
2910  */
2911 static int nes_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2912                 int attr_mask, struct ib_qp_init_attr *init_attr)
2913 {
2914         struct nes_qp *nesqp = to_nesqp(ibqp);
2915
2916         nes_debug(NES_DBG_QP, "\n");
2917
2918         attr->qp_access_flags = 0;
2919         attr->cap.max_send_wr = nesqp->hwqp.sq_size;
2920         attr->cap.max_recv_wr = nesqp->hwqp.rq_size;
2921         attr->cap.max_recv_sge = 1;
2922         if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) {
2923                 init_attr->cap.max_inline_data = 0;
2924         } else {
2925                 init_attr->cap.max_inline_data = 64;
2926         }
2927
2928         init_attr->event_handler = nesqp->ibqp.event_handler;
2929         init_attr->qp_context = nesqp->ibqp.qp_context;
2930         init_attr->send_cq = nesqp->ibqp.send_cq;
2931         init_attr->recv_cq = nesqp->ibqp.recv_cq;
2932         init_attr->srq = nesqp->ibqp.srq = nesqp->ibqp.srq;
2933         init_attr->cap = attr->cap;
2934
2935         return 0;
2936 }
2937
2938
2939 /**
2940  * nes_hw_modify_qp
2941  */
2942 int nes_hw_modify_qp(struct nes_device *nesdev, struct nes_qp *nesqp,
2943                 u32 next_iwarp_state, u32 termlen, u32 wait_completion)
2944 {
2945         struct nes_hw_cqp_wqe *cqp_wqe;
2946         /* struct iw_cm_id *cm_id = nesqp->cm_id; */
2947         /* struct iw_cm_event cm_event; */
2948         struct nes_cqp_request *cqp_request;
2949         int ret;
2950         u16 major_code;
2951
2952         nes_debug(NES_DBG_MOD_QP, "QP%u, refcount=%d\n",
2953                         nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
2954
2955         cqp_request = nes_get_cqp_request(nesdev);
2956         if (cqp_request == NULL) {
2957                 nes_debug(NES_DBG_MOD_QP, "Failed to get a cqp_request.\n");
2958                 return -ENOMEM;
2959         }
2960         if (wait_completion) {
2961                 cqp_request->waiting = 1;
2962         } else {
2963                 cqp_request->waiting = 0;
2964         }
2965         cqp_wqe = &cqp_request->cqp_wqe;
2966
2967         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2968                         NES_CQP_MODIFY_QP | NES_CQP_QP_TYPE_IWARP | next_iwarp_state);
2969         nes_debug(NES_DBG_MOD_QP, "using next_iwarp_state=%08x, wqe_words=%08x\n",
2970                         next_iwarp_state, le32_to_cpu(cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX]));
2971         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2972         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
2973         set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, (u64)nesqp->nesqp_context_pbase);
2974
2975         /* If sending a terminate message, fill in the length (in words) */
2976         if (((next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) == NES_CQP_QP_IWARP_STATE_TERMINATE) &&
2977             !(next_iwarp_state & NES_CQP_QP_TERM_DONT_SEND_TERM_MSG)) {
2978                 termlen = ((termlen + 3) >> 2) << NES_CQP_OP_TERMLEN_SHIFT;
2979                 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_NEW_MSS_IDX, termlen);
2980         }
2981
2982         atomic_set(&cqp_request->refcount, 2);
2983         nes_post_cqp_request(nesdev, cqp_request);
2984
2985         /* Wait for CQP */
2986         if (wait_completion) {
2987                 /* nes_debug(NES_DBG_MOD_QP, "Waiting for modify iWARP QP%u to complete.\n",
2988                                 nesqp->hwqp.qp_id); */
2989                 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2990                                 NES_EVENT_TIMEOUT);
2991                 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u completed, wait_event_timeout ret=%u, "
2992                                 "CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2993                                 nesqp->hwqp.qp_id, ret, cqp_request->major_code, cqp_request->minor_code);
2994                 major_code = cqp_request->major_code;
2995                 if (major_code) {
2996                         nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u failed"
2997                                         "CQP Major:Minor codes = 0x%04X:0x%04X, intended next state = 0x%08X.\n",
2998                                         nesqp->hwqp.qp_id, cqp_request->major_code,
2999                                         cqp_request->minor_code, next_iwarp_state);
3000                 }
3001
3002                 nes_put_cqp_request(nesdev, cqp_request);
3003
3004                 if (!ret)
3005                         return -ETIME;
3006                 else if (major_code)
3007                         return -EIO;
3008                 else
3009                         return 0;
3010         } else {
3011                 return 0;
3012         }
3013 }
3014
3015
3016 /**
3017  * nes_modify_qp
3018  */
3019 int nes_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
3020                 int attr_mask, struct ib_udata *udata)
3021 {
3022         struct nes_qp *nesqp = to_nesqp(ibqp);
3023         struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3024         struct nes_device *nesdev = nesvnic->nesdev;
3025         /* u32 cqp_head; */
3026         /* u32 counter; */
3027         u32 next_iwarp_state = 0;
3028         int err;
3029         unsigned long qplockflags;
3030         int ret;
3031         u16 original_last_aeq;
3032         u8 issue_modify_qp = 0;
3033         u8 issue_disconnect = 0;
3034         u8 dont_wait = 0;
3035
3036         nes_debug(NES_DBG_MOD_QP, "QP%u: QP State=%u, cur QP State=%u,"
3037                         " iwarp_state=0x%X, refcount=%d\n",
3038                         nesqp->hwqp.qp_id, attr->qp_state, nesqp->ibqp_state,
3039                         nesqp->iwarp_state, atomic_read(&nesqp->refcount));
3040
3041         spin_lock_irqsave(&nesqp->lock, qplockflags);
3042
3043         nes_debug(NES_DBG_MOD_QP, "QP%u: hw_iwarp_state=0x%X, hw_tcp_state=0x%X,"
3044                         " QP Access Flags=0x%X, attr_mask = 0x%0x\n",
3045                         nesqp->hwqp.qp_id, nesqp->hw_iwarp_state,
3046                         nesqp->hw_tcp_state, attr->qp_access_flags, attr_mask);
3047
3048         if (attr_mask & IB_QP_STATE) {
3049                 switch (attr->qp_state) {
3050                         case IB_QPS_INIT:
3051                                 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = init\n",
3052                                                 nesqp->hwqp.qp_id);
3053                                 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_IDLE) {
3054                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3055                                         return -EINVAL;
3056                                 }
3057                                 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
3058                                 issue_modify_qp = 1;
3059                                 break;
3060                         case IB_QPS_RTR:
3061                                 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rtr\n",
3062                                                 nesqp->hwqp.qp_id);
3063                                 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_IDLE) {
3064                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3065                                         return -EINVAL;
3066                                 }
3067                                 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
3068                                 issue_modify_qp = 1;
3069                                 break;
3070                         case IB_QPS_RTS:
3071                                 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rts\n",
3072                                                 nesqp->hwqp.qp_id);
3073                                 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_RTS) {
3074                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3075                                         return -EINVAL;
3076                                 }
3077                                 if (nesqp->cm_id == NULL) {
3078                                         nes_debug(NES_DBG_MOD_QP, "QP%u: Failing attempt to move QP to RTS without a CM_ID. \n",
3079                                                         nesqp->hwqp.qp_id );
3080                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3081                                         return -EINVAL;
3082                                 }
3083                                 next_iwarp_state = NES_CQP_QP_IWARP_STATE_RTS;
3084                                 if (nesqp->iwarp_state != NES_CQP_QP_IWARP_STATE_RTS)
3085                                         next_iwarp_state |= NES_CQP_QP_CONTEXT_VALID |
3086                                                         NES_CQP_QP_ARP_VALID | NES_CQP_QP_ORD_VALID;
3087                                 issue_modify_qp = 1;
3088                                 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_ESTABLISHED;
3089                                 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_RTS;
3090                                 nesqp->hte_added = 1;
3091                                 break;
3092                         case IB_QPS_SQD:
3093                                 issue_modify_qp = 1;
3094                                 nes_debug(NES_DBG_MOD_QP, "QP%u: new state=closing. SQ head=%u, SQ tail=%u\n",
3095                                                 nesqp->hwqp.qp_id, nesqp->hwqp.sq_head, nesqp->hwqp.sq_tail);
3096                                 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
3097                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3098                                         return 0;
3099                                 } else {
3100                                         if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
3101                                                 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
3102                                                                 " ignored due to current iWARP state\n",
3103                                                                 nesqp->hwqp.qp_id);
3104                                                 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3105                                                 return -EINVAL;
3106                                         }
3107                                         if (nesqp->hw_iwarp_state != NES_AEQE_IWARP_STATE_RTS) {
3108                                                 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
3109                                                                 " already done based on hw state.\n",
3110                                                                 nesqp->hwqp.qp_id);
3111                                                 issue_modify_qp = 0;
3112                                                 nesqp->in_disconnect = 0;
3113                                         }
3114                                         switch (nesqp->hw_iwarp_state) {
3115                                                 case NES_AEQE_IWARP_STATE_CLOSING:
3116                                                         next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
3117                                                 case NES_AEQE_IWARP_STATE_TERMINATE:
3118                                                         next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
3119                                                         break;
3120                                                 case NES_AEQE_IWARP_STATE_ERROR:
3121                                                         next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
3122                                                         break;
3123                                                 default:
3124                                                         next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
3125                                                         nesqp->in_disconnect = 1;
3126                                                         nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_CLOSING;
3127                                                         break;
3128                                         }
3129                                 }
3130                                 break;
3131                         case IB_QPS_SQE:
3132                                 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = terminate\n",
3133                                                 nesqp->hwqp.qp_id);
3134                                 if (nesqp->iwarp_state>=(u32)NES_CQP_QP_IWARP_STATE_TERMINATE) {
3135                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3136                                         return -EINVAL;
3137                                 }
3138                                 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
3139                                 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
3140                                 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_TERMINATE;
3141                                 issue_modify_qp = 1;
3142                                 nesqp->in_disconnect = 1;
3143                                 break;
3144                         case IB_QPS_ERR:
3145                         case IB_QPS_RESET:
3146                                 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_ERROR) {
3147                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3148                                         return -EINVAL;
3149                                 }
3150                                 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = error\n",
3151                                                 nesqp->hwqp.qp_id);
3152                                 if (nesqp->term_flags)
3153                                         del_timer(&nesqp->terminate_timer);
3154
3155                                 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
3156                                 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
3157                                         if (nesqp->hte_added) {
3158                                                 nes_debug(NES_DBG_MOD_QP, "set CQP_QP_DEL_HTE\n");
3159                                                 next_iwarp_state |= NES_CQP_QP_DEL_HTE;
3160                                                 nesqp->hte_added = 0;
3161                                         }
3162                                 if ((nesqp->hw_tcp_state > NES_AEQE_TCP_STATE_CLOSED) &&
3163                                                 (nesqp->hw_tcp_state != NES_AEQE_TCP_STATE_TIME_WAIT)) {
3164                                         next_iwarp_state |= NES_CQP_QP_RESET;
3165                                         nesqp->in_disconnect = 1;
3166                                 } else {
3167                                         nes_debug(NES_DBG_MOD_QP, "QP%u NOT setting NES_CQP_QP_RESET since TCP state = %u\n",
3168                                                         nesqp->hwqp.qp_id, nesqp->hw_tcp_state);
3169                                         dont_wait = 1;
3170                                 }
3171                                 issue_modify_qp = 1;
3172                                 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_ERROR;
3173                                 break;
3174                         default:
3175                                 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3176                                 return -EINVAL;
3177                                 break;
3178                 }
3179
3180                 nesqp->ibqp_state = attr->qp_state;
3181                 if (((nesqp->iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) ==
3182                                 (u32)NES_CQP_QP_IWARP_STATE_RTS) &&
3183                                 ((next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) >
3184                                 (u32)NES_CQP_QP_IWARP_STATE_RTS)) {
3185                         nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
3186                         nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
3187                                         nesqp->iwarp_state);
3188                         issue_disconnect = 1;
3189                 } else {
3190                         nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
3191                         nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
3192                                         nesqp->iwarp_state);
3193                 }
3194         }
3195
3196         if (attr_mask & IB_QP_ACCESS_FLAGS) {
3197                 if (attr->qp_access_flags & IB_ACCESS_LOCAL_WRITE) {
3198                         nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
3199                                         NES_QPCONTEXT_MISC_RDMA_READ_EN);
3200                         issue_modify_qp = 1;
3201                 }
3202                 if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE) {
3203                         nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN);
3204                         issue_modify_qp = 1;
3205                 }
3206                 if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ) {
3207                         nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_READ_EN);
3208                         issue_modify_qp = 1;
3209                 }
3210                 if (attr->qp_access_flags & IB_ACCESS_MW_BIND) {
3211                         nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_WBIND_EN);
3212                         issue_modify_qp = 1;
3213                 }
3214
3215                 if (nesqp->user_mode) {
3216                         nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
3217                                         NES_QPCONTEXT_MISC_RDMA_READ_EN);
3218                         issue_modify_qp = 1;
3219                 }
3220         }
3221
3222         original_last_aeq = nesqp->last_aeq;
3223         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3224
3225         nes_debug(NES_DBG_MOD_QP, "issue_modify_qp=%u\n", issue_modify_qp);
3226
3227         ret = 0;
3228
3229
3230         if (issue_modify_qp) {
3231                 nes_debug(NES_DBG_MOD_QP, "call nes_hw_modify_qp\n");
3232                 ret = nes_hw_modify_qp(nesdev, nesqp, next_iwarp_state, 0, 1);
3233                 if (ret)
3234                         nes_debug(NES_DBG_MOD_QP, "nes_hw_modify_qp (next_iwarp_state = 0x%08X)"
3235                                         " failed for QP%u.\n",
3236                                         next_iwarp_state, nesqp->hwqp.qp_id);
3237
3238         }
3239
3240         if ((issue_modify_qp) && (nesqp->ibqp_state > IB_QPS_RTS)) {
3241                 nes_debug(NES_DBG_MOD_QP, "QP%u Issued ModifyQP refcount (%d),"
3242                                 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3243                                 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3244                                 original_last_aeq, nesqp->last_aeq);
3245                 if ((!ret) ||
3246                                 ((original_last_aeq != NES_AEQE_AEID_RDMAP_ROE_BAD_LLP_CLOSE) &&
3247                                 (ret))) {
3248                         if (dont_wait) {
3249                                 if (nesqp->cm_id && nesqp->hw_tcp_state != 0) {
3250                                         nes_debug(NES_DBG_MOD_QP, "QP%u Queuing fake disconnect for QP refcount (%d),"
3251                                                         " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3252                                                         nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3253                                                         original_last_aeq, nesqp->last_aeq);
3254                                         /* this one is for the cm_disconnect thread */
3255                                         spin_lock_irqsave(&nesqp->lock, qplockflags);
3256                                         nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_CLOSED;
3257                                         nesqp->last_aeq = NES_AEQE_AEID_RESET_SENT;
3258                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3259                                         nes_cm_disconn(nesqp);
3260                                 } else {
3261                                         nes_debug(NES_DBG_MOD_QP, "QP%u No fake disconnect, QP refcount=%d\n",
3262                                                         nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3263                                 }
3264                         } else {
3265                                 spin_lock_irqsave(&nesqp->lock, qplockflags);
3266                                 if (nesqp->cm_id) {
3267                                         /* These two are for the timer thread */
3268                                         if (atomic_inc_return(&nesqp->close_timer_started) == 1) {
3269                                                 nesqp->cm_id->add_ref(nesqp->cm_id);
3270                                                 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3271                                                                 " need ae to finish up, original_last_aeq = 0x%04X."
3272                                                                 " last_aeq = 0x%04X, scheduling timer.\n",
3273                                                                 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3274                                                                 original_last_aeq, nesqp->last_aeq);
3275                                                 schedule_nes_timer(nesqp->cm_node, (struct sk_buff *) nesqp, NES_TIMER_TYPE_CLOSE, 1, 0);
3276                                         }
3277                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3278                                 } else {
3279                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3280                                         nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3281                                                         " need ae to finish up, original_last_aeq = 0x%04X."
3282                                                         " last_aeq = 0x%04X.\n",
3283                                                         nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3284                                                         original_last_aeq, nesqp->last_aeq);
3285                                 }
3286                         }
3287                 } else {
3288                         nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3289                                         " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3290                                         nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3291                                         original_last_aeq, nesqp->last_aeq);
3292                 }
3293         } else {
3294                 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3295                                 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3296                                 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3297                                 original_last_aeq, nesqp->last_aeq);
3298         }
3299
3300         err = 0;
3301
3302         nes_debug(NES_DBG_MOD_QP, "QP%u Leaving, refcount=%d\n",
3303                         nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3304
3305         return err;
3306 }
3307
3308
3309 /**
3310  * nes_muticast_attach
3311  */
3312 static int nes_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3313 {
3314         nes_debug(NES_DBG_INIT, "\n");
3315         return -ENOSYS;
3316 }
3317
3318
3319 /**
3320  * nes_multicast_detach
3321  */
3322 static int nes_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3323 {
3324         nes_debug(NES_DBG_INIT, "\n");
3325         return -ENOSYS;
3326 }
3327
3328
3329 /**
3330  * nes_process_mad
3331  */
3332 static int nes_process_mad(struct ib_device *ibdev, int mad_flags,
3333                 u8 port_num, struct ib_wc *in_wc, struct ib_grh *in_grh,
3334                 struct ib_mad *in_mad, struct ib_mad *out_mad)
3335 {
3336         nes_debug(NES_DBG_INIT, "\n");
3337         return -ENOSYS;
3338 }
3339
3340 static inline void
3341 fill_wqe_sg_send(struct nes_hw_qp_wqe *wqe, struct ib_send_wr *ib_wr, u32 uselkey)
3342 {
3343         int sge_index;
3344         int total_payload_length = 0;
3345         for (sge_index = 0; sge_index < ib_wr->num_sge; sge_index++) {
3346                 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3347                         ib_wr->sg_list[sge_index].addr);
3348                 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_LENGTH0_IDX + (sge_index*4),
3349                         ib_wr->sg_list[sge_index].length);
3350                 if (uselkey)
3351                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4),
3352                                                 (ib_wr->sg_list[sge_index].lkey));
3353                 else
3354                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4), 0);
3355
3356                 total_payload_length += ib_wr->sg_list[sge_index].length;
3357         }
3358         nes_debug(NES_DBG_IW_TX, "UC UC UC, sending total_payload_length=%u \n",
3359                         total_payload_length);
3360         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3361                                 total_payload_length);
3362 }
3363
3364 /**
3365  * nes_post_send
3366  */
3367 static int nes_post_send(struct ib_qp *ibqp, struct ib_send_wr *ib_wr,
3368                 struct ib_send_wr **bad_wr)
3369 {
3370         u64 u64temp;
3371         unsigned long flags = 0;
3372         struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3373         struct nes_device *nesdev = nesvnic->nesdev;
3374         struct nes_qp *nesqp = to_nesqp(ibqp);
3375         struct nes_hw_qp_wqe *wqe;
3376         int err;
3377         u32 qsize = nesqp->hwqp.sq_size;
3378         u32 head;
3379         u32 wqe_misc;
3380         u32 wqe_count;
3381         u32 counter;
3382         u32 total_payload_length;
3383
3384         err = 0;
3385         wqe_misc = 0;
3386         wqe_count = 0;
3387         total_payload_length = 0;
3388
3389         if (nesqp->ibqp_state > IB_QPS_RTS)
3390                 return -EINVAL;
3391
3392         spin_lock_irqsave(&nesqp->lock, flags);
3393
3394         head = nesqp->hwqp.sq_head;
3395
3396         while (ib_wr) {
3397                 /* Check for QP error */
3398                 if (nesqp->term_flags) {
3399                         err = -EINVAL;
3400                         break;
3401                 }
3402
3403                 /* Check for SQ overflow */
3404                 if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
3405                         err = -EINVAL;
3406                         break;
3407                 }
3408
3409                 wqe = &nesqp->hwqp.sq_vbase[head];
3410                 /* nes_debug(NES_DBG_IW_TX, "processing sq wqe for QP%u at %p, head = %u.\n",
3411                                 nesqp->hwqp.qp_id, wqe, head); */
3412                 nes_fill_init_qp_wqe(wqe, nesqp, head);
3413                 u64temp = (u64)(ib_wr->wr_id);
3414                 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3415                                         u64temp);
3416                         switch (ib_wr->opcode) {
3417                                 case IB_WR_SEND:
3418                                         if (ib_wr->send_flags & IB_SEND_SOLICITED) {
3419                                                 wqe_misc = NES_IWARP_SQ_OP_SENDSE;
3420                                         } else {
3421                                                 wqe_misc = NES_IWARP_SQ_OP_SEND;
3422                                         }
3423                                         if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3424                                                 err = -EINVAL;
3425                                                 break;
3426                                         }
3427                                         if (ib_wr->send_flags & IB_SEND_FENCE) {
3428                                                 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3429                                         }
3430                                         if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3431                                                         ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3432                                                         (ib_wr->sg_list[0].length <= 64)) {
3433                                                 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3434                                                                (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3435                                                 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3436                                                                 ib_wr->sg_list[0].length);
3437                                                 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3438                                         } else {
3439                                                 fill_wqe_sg_send(wqe, ib_wr, 1);
3440                                         }
3441
3442                                         break;
3443                                 case IB_WR_RDMA_WRITE:
3444                                         wqe_misc = NES_IWARP_SQ_OP_RDMAW;
3445                                         if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3446                                                 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=%u\n",
3447                                                                 ib_wr->num_sge,
3448                                                                 nesdev->nesadapter->max_sge);
3449                                                 err = -EINVAL;
3450                                                 break;
3451                                         }
3452                                         if (ib_wr->send_flags & IB_SEND_FENCE) {
3453                                                 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3454                                         }
3455
3456                                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3457                                                         ib_wr->wr.rdma.rkey);
3458                                         set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3459                                                         ib_wr->wr.rdma.remote_addr);
3460
3461                                         if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3462                                                         ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3463                                                         (ib_wr->sg_list[0].length <= 64)) {
3464                                                 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3465                                                                (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3466                                                 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3467                                                                 ib_wr->sg_list[0].length);
3468                                                 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3469                                         } else {
3470                                                 fill_wqe_sg_send(wqe, ib_wr, 1);
3471                                         }
3472                                         wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX] =
3473                                                         wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX];
3474                                         break;
3475                                 case IB_WR_RDMA_READ:
3476                                         /* iWARP only supports 1 sge for RDMA reads */
3477                                         if (ib_wr->num_sge > 1) {
3478                                                 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=1\n",
3479                                                                 ib_wr->num_sge);
3480                                                 err = -EINVAL;
3481                                                 break;
3482                                         }
3483                                         wqe_misc = NES_IWARP_SQ_OP_RDMAR;
3484                                         set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3485                                                         ib_wr->wr.rdma.remote_addr);
3486                                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3487                                                         ib_wr->wr.rdma.rkey);
3488                                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX,
3489                                                         ib_wr->sg_list->length);
3490                                         set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX,
3491                                                         ib_wr->sg_list->addr);
3492                                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX,
3493                                                         ib_wr->sg_list->lkey);
3494                                         break;
3495                                 default:
3496                                         /* error */
3497                                         err = -EINVAL;
3498                                         break;
3499                         }
3500
3501                 if (ib_wr->send_flags & IB_SEND_SIGNALED) {
3502                         wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
3503                 }
3504                 wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = cpu_to_le32(wqe_misc);
3505
3506                 ib_wr = ib_wr->next;
3507                 head++;
3508                 wqe_count++;
3509                 if (head >= qsize)
3510                         head = 0;
3511
3512         }
3513
3514         nesqp->hwqp.sq_head = head;
3515         barrier();
3516         while (wqe_count) {
3517                 counter = min(wqe_count, ((u32)255));
3518                 wqe_count -= counter;
3519                 nes_write32(nesdev->regs + NES_WQE_ALLOC,
3520                                 (counter << 24) | 0x00800000 | nesqp->hwqp.qp_id);
3521         }
3522
3523         spin_unlock_irqrestore(&nesqp->lock, flags);
3524
3525         if (err)
3526                 *bad_wr = ib_wr;
3527         return err;
3528 }
3529
3530
3531 /**
3532  * nes_post_recv
3533  */
3534 static int nes_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *ib_wr,
3535                 struct ib_recv_wr **bad_wr)
3536 {
3537         u64 u64temp;
3538         unsigned long flags = 0;
3539         struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3540         struct nes_device *nesdev = nesvnic->nesdev;
3541         struct nes_qp *nesqp = to_nesqp(ibqp);
3542         struct nes_hw_qp_wqe *wqe;
3543         int err = 0;
3544         int sge_index;
3545         u32 qsize = nesqp->hwqp.rq_size;
3546         u32 head;
3547         u32 wqe_count = 0;
3548         u32 counter;
3549         u32 total_payload_length;
3550
3551         if (nesqp->ibqp_state > IB_QPS_RTS)
3552                 return -EINVAL;
3553
3554         spin_lock_irqsave(&nesqp->lock, flags);
3555
3556         head = nesqp->hwqp.rq_head;
3557
3558         while (ib_wr) {
3559                 /* Check for QP error */
3560                 if (nesqp->term_flags) {
3561                         err = -EINVAL;
3562                         break;
3563                 }
3564
3565                 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3566                         err = -EINVAL;
3567                         break;
3568                 }
3569                 /* Check for RQ overflow */
3570                 if (((head + (2 * qsize) - nesqp->hwqp.rq_tail) % qsize) == (qsize - 1)) {
3571                         err = -EINVAL;
3572                         break;
3573                 }
3574
3575                 nes_debug(NES_DBG_IW_RX, "ibwr sge count = %u.\n", ib_wr->num_sge);
3576                 wqe = &nesqp->hwqp.rq_vbase[head];
3577
3578                 /* nes_debug(NES_DBG_IW_RX, "QP%u:processing rq wqe at %p, head = %u.\n",
3579                                 nesqp->hwqp.qp_id, wqe, head); */
3580                 nes_fill_init_qp_wqe(wqe, nesqp, head);
3581                 u64temp = (u64)(ib_wr->wr_id);
3582                 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3583                                         u64temp);
3584                 total_payload_length = 0;
3585                 for (sge_index=0; sge_index < ib_wr->num_sge; sge_index++) {
3586                         set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3587                                         ib_wr->sg_list[sge_index].addr);
3588                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_LENGTH0_IDX+(sge_index*4),
3589                                         ib_wr->sg_list[sge_index].length);
3590                         set_wqe_32bit_value(wqe->wqe_words,NES_IWARP_RQ_WQE_STAG0_IDX+(sge_index*4),
3591                                         ib_wr->sg_list[sge_index].lkey);
3592
3593                         total_payload_length += ib_wr->sg_list[sge_index].length;
3594                 }
3595                 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_TOTAL_PAYLOAD_IDX,
3596                                         total_payload_length);
3597
3598                 ib_wr = ib_wr->next;
3599                 head++;
3600                 wqe_count++;
3601                 if (head >= qsize)
3602                         head = 0;
3603         }
3604
3605         nesqp->hwqp.rq_head = head;
3606         barrier();
3607         while (wqe_count) {
3608                 counter = min(wqe_count, ((u32)255));
3609                 wqe_count -= counter;
3610                 nes_write32(nesdev->regs+NES_WQE_ALLOC, (counter<<24) | nesqp->hwqp.qp_id);
3611         }
3612
3613         spin_unlock_irqrestore(&nesqp->lock, flags);
3614
3615         if (err)
3616                 *bad_wr = ib_wr;
3617         return err;
3618 }
3619
3620
3621 /**
3622  * nes_poll_cq
3623  */
3624 static int nes_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry)
3625 {
3626         u64 u64temp;
3627         u64 wrid;
3628         unsigned long flags = 0;
3629         struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3630         struct nes_device *nesdev = nesvnic->nesdev;
3631         struct nes_cq *nescq = to_nescq(ibcq);
3632         struct nes_qp *nesqp;
3633         struct nes_hw_cqe cqe;
3634         u32 head;
3635         u32 wq_tail = 0;
3636         u32 cq_size;
3637         u32 cqe_count = 0;
3638         u32 wqe_index;
3639         u32 u32temp;
3640         u32 move_cq_head = 1;
3641         u32 err_code;
3642
3643         nes_debug(NES_DBG_CQ, "\n");
3644
3645         spin_lock_irqsave(&nescq->lock, flags);
3646
3647         head = nescq->hw_cq.cq_head;
3648         cq_size = nescq->hw_cq.cq_size;
3649
3650         while (cqe_count < num_entries) {
3651                 if ((le32_to_cpu(nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX]) &
3652                                 NES_CQE_VALID) == 0)
3653                         break;
3654
3655                 /*
3656                  * Make sure we read CQ entry contents *after*
3657                  * we've checked the valid bit.
3658                  */
3659                 rmb();
3660
3661                 cqe = nescq->hw_cq.cq_vbase[head];
3662                 u32temp = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3663                 wqe_index = u32temp & (nesdev->nesadapter->max_qp_wr - 1);
3664                 u32temp &= ~(NES_SW_CONTEXT_ALIGN-1);
3665                 /* parse CQE, get completion context from WQE (either rq or sq) */
3666                 u64temp = (((u64)(le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX])))<<32) |
3667                                 ((u64)u32temp);
3668
3669                 if (u64temp) {
3670                         nesqp = (struct nes_qp *)(unsigned long)u64temp;
3671                         memset(entry, 0, sizeof *entry);
3672                         if (cqe.cqe_words[NES_CQE_ERROR_CODE_IDX] == 0) {
3673                                 entry->status = IB_WC_SUCCESS;
3674                         } else {
3675                                 err_code = le32_to_cpu(cqe.cqe_words[NES_CQE_ERROR_CODE_IDX]);
3676                                 if (NES_IWARP_CQE_MAJOR_DRV == (err_code >> 16)) {
3677                                         entry->status = err_code & 0x0000ffff;
3678
3679                                         /* The rest of the cqe's will be marked as flushed */
3680                                         nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_ERROR_CODE_IDX] =
3681                                                 cpu_to_le32((NES_IWARP_CQE_MAJOR_FLUSH << 16) |
3682                                                             NES_IWARP_CQE_MINOR_FLUSH);
3683                                 } else
3684                                         entry->status = IB_WC_WR_FLUSH_ERR;
3685                         }
3686
3687                         entry->qp = &nesqp->ibqp;
3688                         entry->src_qp = nesqp->hwqp.qp_id;
3689
3690                         if (le32_to_cpu(cqe.cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_SQ) {
3691                                 if (nesqp->skip_lsmm) {
3692                                         nesqp->skip_lsmm = 0;
3693                                         nesqp->hwqp.sq_tail++;
3694                                 }
3695
3696                                 /* Working on a SQ Completion*/
3697                                 wrid = (((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wqe_index].
3698                                                 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_HIGH_IDX]))) << 32) |
3699                                                 ((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wqe_index].
3700                                                 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX])));
3701                                 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3702                                                 wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX]);
3703
3704                                 switch (le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3705                                                 wqe_words[NES_IWARP_SQ_WQE_MISC_IDX]) & 0x3f) {
3706                                         case NES_IWARP_SQ_OP_RDMAW:
3707                                                 nes_debug(NES_DBG_CQ, "Operation = RDMA WRITE.\n");
3708                                                 entry->opcode = IB_WC_RDMA_WRITE;
3709                                                 break;
3710                                         case NES_IWARP_SQ_OP_RDMAR:
3711                                                 nes_debug(NES_DBG_CQ, "Operation = RDMA READ.\n");
3712                                                 entry->opcode = IB_WC_RDMA_READ;
3713                                                 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3714                                                                 wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX]);
3715                                                 break;
3716                                         case NES_IWARP_SQ_OP_SENDINV:
3717                                         case NES_IWARP_SQ_OP_SENDSEINV:
3718                                         case NES_IWARP_SQ_OP_SEND:
3719                                         case NES_IWARP_SQ_OP_SENDSE:
3720                                                 nes_debug(NES_DBG_CQ, "Operation = Send.\n");
3721                                                 entry->opcode = IB_WC_SEND;
3722                                                 break;
3723                                 }
3724
3725                                 nesqp->hwqp.sq_tail = (wqe_index+1)&(nesqp->hwqp.sq_size - 1);
3726                                 if ((entry->status != IB_WC_SUCCESS) && (nesqp->hwqp.sq_tail != nesqp->hwqp.sq_head)) {
3727                                         move_cq_head = 0;
3728                                         wq_tail = nesqp->hwqp.sq_tail;
3729                                 }
3730                         } else {
3731                                 /* Working on a RQ Completion*/
3732                                 entry->byte_len = le32_to_cpu(cqe.cqe_words[NES_CQE_PAYLOAD_LENGTH_IDX]);
3733                                 wrid = ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wqe_index].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_LOW_IDX]))) |
3734                                         ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wqe_index].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_HIGH_IDX]))<<32);
3735                                         entry->opcode = IB_WC_RECV;
3736
3737                                 nesqp->hwqp.rq_tail = (wqe_index+1)&(nesqp->hwqp.rq_size - 1);
3738                                 if ((entry->status != IB_WC_SUCCESS) && (nesqp->hwqp.rq_tail != nesqp->hwqp.rq_head)) {
3739                                         move_cq_head = 0;
3740                                         wq_tail = nesqp->hwqp.rq_tail;
3741                                 }
3742                         }
3743
3744                         entry->wr_id = wrid;
3745                         entry++;
3746                         cqe_count++;
3747                 }
3748
3749                 if (move_cq_head) {
3750                         nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX] = 0;
3751                         if (++head >= cq_size)
3752                                 head = 0;
3753                         nescq->polled_completions++;
3754
3755                         if ((nescq->polled_completions > (cq_size / 2)) ||
3756                                         (nescq->polled_completions == 255)) {
3757                                 nes_debug(NES_DBG_CQ, "CQ%u Issuing CQE Allocate since more than half of cqes"
3758                                         " are pending %u of %u.\n",
3759                                         nescq->hw_cq.cq_number, nescq->polled_completions, cq_size);
3760                                 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3761                                         nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3762                                 nescq->polled_completions = 0;
3763                         }
3764                 } else {
3765                         /* Update the wqe index and set status to flush */
3766                         wqe_index = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3767                         wqe_index = (wqe_index & (~(nesdev->nesadapter->max_qp_wr - 1))) | wq_tail;
3768                         nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX] =
3769                                 cpu_to_le32(wqe_index);
3770                         move_cq_head = 1; /* ready for next pass */
3771                 }
3772         }
3773
3774         if (nescq->polled_completions) {
3775                 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3776                                 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3777                 nescq->polled_completions = 0;
3778         }
3779
3780         nescq->hw_cq.cq_head = head;
3781         nes_debug(NES_DBG_CQ, "Reporting %u completions for CQ%u.\n",
3782                         cqe_count, nescq->hw_cq.cq_number);
3783
3784         spin_unlock_irqrestore(&nescq->lock, flags);
3785
3786         return cqe_count;
3787 }
3788
3789
3790 /**
3791  * nes_req_notify_cq
3792  */
3793 static int nes_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags notify_flags)
3794                 {
3795         struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3796         struct nes_device *nesdev = nesvnic->nesdev;
3797         struct nes_cq *nescq = to_nescq(ibcq);
3798         u32 cq_arm;
3799
3800         nes_debug(NES_DBG_CQ, "Requesting notification for CQ%u.\n",
3801                         nescq->hw_cq.cq_number);
3802
3803         cq_arm = nescq->hw_cq.cq_number;
3804         if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_NEXT_COMP)
3805                 cq_arm |= NES_CQE_ALLOC_NOTIFY_NEXT;
3806         else if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
3807                 cq_arm |= NES_CQE_ALLOC_NOTIFY_SE;
3808         else
3809                 return -EINVAL;
3810
3811         nes_write32(nesdev->regs+NES_CQE_ALLOC, cq_arm);
3812         nes_read32(nesdev->regs+NES_CQE_ALLOC);
3813
3814         return 0;
3815 }
3816
3817
3818 /**
3819  * nes_init_ofa_device
3820  */
3821 struct nes_ib_device *nes_init_ofa_device(struct net_device *netdev)
3822 {
3823         struct nes_ib_device *nesibdev;
3824         struct nes_vnic *nesvnic = netdev_priv(netdev);
3825         struct nes_device *nesdev = nesvnic->nesdev;
3826
3827         nesibdev = (struct nes_ib_device *)ib_alloc_device(sizeof(struct nes_ib_device));
3828         if (nesibdev == NULL) {
3829                 return NULL;
3830         }
3831         strlcpy(nesibdev->ibdev.name, "nes%d", IB_DEVICE_NAME_MAX);
3832         nesibdev->ibdev.owner = THIS_MODULE;
3833
3834         nesibdev->ibdev.node_type = RDMA_NODE_RNIC;
3835         memset(&nesibdev->ibdev.node_guid, 0, sizeof(nesibdev->ibdev.node_guid));
3836         memcpy(&nesibdev->ibdev.node_guid, netdev->dev_addr, 6);
3837
3838         nesibdev->ibdev.uverbs_cmd_mask =
3839                         (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
3840                         (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
3841                         (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
3842                         (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
3843                         (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
3844                         (1ull << IB_USER_VERBS_CMD_REG_MR) |
3845                         (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
3846                         (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
3847                         (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
3848                         (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
3849                         (1ull << IB_USER_VERBS_CMD_CREATE_AH) |
3850                         (1ull << IB_USER_VERBS_CMD_DESTROY_AH) |
3851                         (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
3852                         (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
3853                         (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
3854                         (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
3855                         (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
3856                         (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
3857                         (1ull << IB_USER_VERBS_CMD_BIND_MW) |
3858                         (1ull << IB_USER_VERBS_CMD_DEALLOC_MW) |
3859                         (1ull << IB_USER_VERBS_CMD_POST_RECV) |
3860                         (1ull << IB_USER_VERBS_CMD_POST_SEND);
3861
3862         nesibdev->ibdev.phys_port_cnt = 1;
3863         nesibdev->ibdev.num_comp_vectors = 1;
3864         nesibdev->ibdev.dma_device = &nesdev->pcidev->dev;
3865         nesibdev->ibdev.dev.parent = &nesdev->pcidev->dev;
3866         nesibdev->ibdev.query_device = nes_query_device;
3867         nesibdev->ibdev.query_port = nes_query_port;
3868         nesibdev->ibdev.modify_port = nes_modify_port;
3869         nesibdev->ibdev.query_pkey = nes_query_pkey;
3870         nesibdev->ibdev.query_gid = nes_query_gid;
3871         nesibdev->ibdev.alloc_ucontext = nes_alloc_ucontext;
3872         nesibdev->ibdev.dealloc_ucontext = nes_dealloc_ucontext;
3873         nesibdev->ibdev.mmap = nes_mmap;
3874         nesibdev->ibdev.alloc_pd = nes_alloc_pd;
3875         nesibdev->ibdev.dealloc_pd = nes_dealloc_pd;
3876         nesibdev->ibdev.create_ah = nes_create_ah;
3877         nesibdev->ibdev.destroy_ah = nes_destroy_ah;
3878         nesibdev->ibdev.create_qp = nes_create_qp;
3879         nesibdev->ibdev.modify_qp = nes_modify_qp;
3880         nesibdev->ibdev.query_qp = nes_query_qp;
3881         nesibdev->ibdev.destroy_qp = nes_destroy_qp;
3882         nesibdev->ibdev.create_cq = nes_create_cq;
3883         nesibdev->ibdev.destroy_cq = nes_destroy_cq;
3884         nesibdev->ibdev.poll_cq = nes_poll_cq;
3885         nesibdev->ibdev.get_dma_mr = nes_get_dma_mr;
3886         nesibdev->ibdev.reg_phys_mr = nes_reg_phys_mr;
3887         nesibdev->ibdev.reg_user_mr = nes_reg_user_mr;
3888         nesibdev->ibdev.dereg_mr = nes_dereg_mr;
3889         nesibdev->ibdev.alloc_mw = nes_alloc_mw;
3890         nesibdev->ibdev.dealloc_mw = nes_dealloc_mw;
3891         nesibdev->ibdev.bind_mw = nes_bind_mw;
3892
3893         nesibdev->ibdev.alloc_fmr = nes_alloc_fmr;
3894         nesibdev->ibdev.unmap_fmr = nes_unmap_fmr;
3895         nesibdev->ibdev.dealloc_fmr = nes_dealloc_fmr;
3896         nesibdev->ibdev.map_phys_fmr = nes_map_phys_fmr;
3897
3898         nesibdev->ibdev.attach_mcast = nes_multicast_attach;
3899         nesibdev->ibdev.detach_mcast = nes_multicast_detach;
3900         nesibdev->ibdev.process_mad = nes_process_mad;
3901
3902         nesibdev->ibdev.req_notify_cq = nes_req_notify_cq;
3903         nesibdev->ibdev.post_send = nes_post_send;
3904         nesibdev->ibdev.post_recv = nes_post_recv;
3905
3906         nesibdev->ibdev.iwcm = kzalloc(sizeof(*nesibdev->ibdev.iwcm), GFP_KERNEL);
3907         if (nesibdev->ibdev.iwcm == NULL) {
3908                 ib_dealloc_device(&nesibdev->ibdev);
3909                 return NULL;
3910         }
3911         nesibdev->ibdev.iwcm->add_ref = nes_add_ref;
3912         nesibdev->ibdev.iwcm->rem_ref = nes_rem_ref;
3913         nesibdev->ibdev.iwcm->get_qp = nes_get_qp;
3914         nesibdev->ibdev.iwcm->connect = nes_connect;
3915         nesibdev->ibdev.iwcm->accept = nes_accept;
3916         nesibdev->ibdev.iwcm->reject = nes_reject;
3917         nesibdev->ibdev.iwcm->create_listen = nes_create_listen;
3918         nesibdev->ibdev.iwcm->destroy_listen = nes_destroy_listen;
3919
3920         return nesibdev;
3921 }
3922
3923
3924 /**
3925  * nes_destroy_ofa_device
3926  */
3927 void nes_destroy_ofa_device(struct nes_ib_device *nesibdev)
3928 {
3929         if (nesibdev == NULL)
3930                 return;
3931
3932         nes_unregister_ofa_device(nesibdev);
3933
3934         kfree(nesibdev->ibdev.iwcm);
3935         ib_dealloc_device(&nesibdev->ibdev);
3936 }
3937
3938
3939 /**
3940  * nes_register_ofa_device
3941  */
3942 int nes_register_ofa_device(struct nes_ib_device *nesibdev)
3943 {
3944         struct nes_vnic *nesvnic = nesibdev->nesvnic;
3945         struct nes_device *nesdev = nesvnic->nesdev;
3946         struct nes_adapter *nesadapter = nesdev->nesadapter;
3947         int i, ret;
3948
3949         ret = ib_register_device(&nesvnic->nesibdev->ibdev);
3950         if (ret) {
3951                 return ret;
3952         }
3953
3954         /* Get the resources allocated to this device */
3955         nesibdev->max_cq = (nesadapter->max_cq-NES_FIRST_QPN) / nesadapter->port_count;
3956         nesibdev->max_mr = nesadapter->max_mr / nesadapter->port_count;
3957         nesibdev->max_qp = (nesadapter->max_qp-NES_FIRST_QPN) / nesadapter->port_count;
3958         nesibdev->max_pd = nesadapter->max_pd / nesadapter->port_count;
3959
3960         for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
3961                 ret = device_create_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
3962                 if (ret) {
3963                         while (i > 0) {
3964                                 i--;
3965                                 device_remove_file(&nesibdev->ibdev.dev,
3966                                                    nes_dev_attributes[i]);
3967                         }
3968                         ib_unregister_device(&nesibdev->ibdev);
3969                         return ret;
3970                 }
3971         }
3972
3973         nesvnic->of_device_registered = 1;
3974
3975         return 0;
3976 }
3977
3978
3979 /**
3980  * nes_unregister_ofa_device
3981  */
3982 static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev)
3983 {
3984         struct nes_vnic *nesvnic = nesibdev->nesvnic;
3985         int i;
3986
3987         for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
3988                 device_remove_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
3989         }
3990
3991         if (nesvnic->of_device_registered) {
3992                 ib_unregister_device(&nesibdev->ibdev);
3993         }
3994
3995         nesvnic->of_device_registered = 0;
3996 }