drivers/infiniband/hw/nes/nes_verbs.c

   1 /*
   2  * Copyright (c) 2006 - 2009 Intel-NE, Inc.  All rights reserved.
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and/or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  *
  32  */
  33
  34 #include <linux/module.h>
  35 #include <linux/moduleparam.h>
  36 #include <linux/random.h>
  37 #include <linux/highmem.h>
  38 #include <asm/byteorder.h>
  39
  40 #include <rdma/ib_verbs.h>
  41 #include <rdma/iw_cm.h>
  42 #include <rdma/ib_user_verbs.h>
  43
  44 #include "nes.h"
  45
  46 #include <rdma/ib_umem.h>
  47
  48 atomic_t mod_qp_timouts;
  49 atomic_t qps_created;
  50 atomic_t sw_qps_destroyed;
  51
  52 static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev);
  53
  54 /**
  55  * nes_alloc_mw
  56  */
  57 static struct ib_mw *nes_alloc_mw(struct ib_pd *ibpd) {
  58         struct nes_pd *nespd = to_nespd(ibpd);
  59         struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
  60         struct nes_device *nesdev = nesvnic->nesdev;
  61         struct nes_adapter *nesadapter = nesdev->nesadapter;
  62         struct nes_cqp_request *cqp_request;
  63         struct nes_mr *nesmr;
  64         struct ib_mw *ibmw;
  65         struct nes_hw_cqp_wqe *cqp_wqe;
  66         int ret;
  67         u32 stag;
  68         u32 stag_index = 0;
  69         u32 next_stag_index = 0;
  70         u32 driver_key = 0;
  71         u8 stag_key = 0;
  72
  73         get_random_bytes(&next_stag_index, sizeof(next_stag_index));
  74         stag_key = (u8)next_stag_index;
  75
  76         driver_key = 0;
  77
  78         next_stag_index >>= 8;
  79         next_stag_index %= nesadapter->max_mr;
  80
  81         ret = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
  82                         nesadapter->max_mr, &stag_index, &next_stag_index);
  83         if (ret) {
  84                 return ERR_PTR(ret);
  85         }
  86
  87         nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
  88         if (!nesmr) {
  89                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
  90                 return ERR_PTR(-ENOMEM);
  91         }
  92
  93         stag = stag_index << 8;
  94         stag |= driver_key;
  95         stag += (u32)stag_key;
  96
  97         nes_debug(NES_DBG_MR, "Registering STag 0x%08X, index = 0x%08X\n",
  98                         stag, stag_index);
  99
 100         /* Register the region with the adapter */
 101         cqp_request = nes_get_cqp_request(nesdev);
 102         if (cqp_request == NULL) {
 103                 kfree(nesmr);
 104                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
 105                 return ERR_PTR(-ENOMEM);
 106         }
 107
 108         cqp_request->waiting = 1;
 109         cqp_wqe = &cqp_request->cqp_wqe;
 110
 111         cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] =
 112                         cpu_to_le32( NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_RIGHTS_REMOTE_READ |
 113                         NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_VA_TO |
 114                         NES_CQP_STAG_REM_ACC_EN);
 115
 116         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
 117         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX, (nespd->pd_id & 0x00007fff));
 118         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
 119
 120         atomic_set(&cqp_request->refcount, 2);
 121         nes_post_cqp_request(nesdev, cqp_request);
 122
 123         /* Wait for CQP */
 124         ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
 125                         NES_EVENT_TIMEOUT);
 126         nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
 127                         " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
 128                         stag, ret, cqp_request->major_code, cqp_request->minor_code);
 129         if ((!ret) || (cqp_request->major_code)) {
 130                 nes_put_cqp_request(nesdev, cqp_request);
 131                 kfree(nesmr);
 132                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
 133                 if (!ret) {
 134                         return ERR_PTR(-ETIME);
 135                 } else {
 136                         return ERR_PTR(-ENOMEM);
 137                 }
 138         }
 139         nes_put_cqp_request(nesdev, cqp_request);
 140
 141         nesmr->ibmw.rkey = stag;
 142         nesmr->mode = IWNES_MEMREG_TYPE_MW;
 143         ibmw = &nesmr->ibmw;
 144         nesmr->pbl_4k = 0;
 145         nesmr->pbls_used = 0;
 146
 147         return ibmw;
 148 }
 149
 150
 151 /**
 152  * nes_dealloc_mw
 153  */
 154 static int nes_dealloc_mw(struct ib_mw *ibmw)
 155 {
 156         struct nes_mr *nesmr = to_nesmw(ibmw);
 157         struct nes_vnic *nesvnic = to_nesvnic(ibmw->device);
 158         struct nes_device *nesdev = nesvnic->nesdev;
 159         struct nes_adapter *nesadapter = nesdev->nesadapter;
 160         struct nes_hw_cqp_wqe *cqp_wqe;
 161         struct nes_cqp_request *cqp_request;
 162         int err = 0;
 163         int ret;
 164
 165         /* Deallocate the window with the adapter */
 166         cqp_request = nes_get_cqp_request(nesdev);
 167         if (cqp_request == NULL) {
 168                 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
 169                 return -ENOMEM;
 170         }
 171         cqp_request->waiting = 1;
 172         cqp_wqe = &cqp_request->cqp_wqe;
 173         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
 174         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, NES_CQP_DEALLOCATE_STAG);
 175         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ibmw->rkey);
 176
 177         atomic_set(&cqp_request->refcount, 2);
 178         nes_post_cqp_request(nesdev, cqp_request);
 179
 180         /* Wait for CQP */
 181         nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X to complete.\n",
 182                         ibmw->rkey);
 183         ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
 184                         NES_EVENT_TIMEOUT);
 185         nes_debug(NES_DBG_MR, "Deallocate STag completed, wait_event_timeout ret = %u,"
 186                         " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
 187                         ret, cqp_request->major_code, cqp_request->minor_code);
 188         if (!ret)
 189                 err = -ETIME;
 190         else if (cqp_request->major_code)
 191                 err = -EIO;
 192
 193         nes_put_cqp_request(nesdev, cqp_request);
 194
 195         nes_free_resource(nesadapter, nesadapter->allocated_mrs,
 196                         (ibmw->rkey & 0x0fffff00) >> 8);
 197         kfree(nesmr);
 198
 199         return err;
 200 }
 201
 202
 203 /**
 204  * nes_bind_mw
 205  */
 206 static int nes_bind_mw(struct ib_qp *ibqp, struct ib_mw *ibmw,
 207                 struct ib_mw_bind *ibmw_bind)
 208 {
 209         u64 u64temp;
 210         struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
 211         struct nes_device *nesdev = nesvnic->nesdev;
 212         /* struct nes_mr *nesmr = to_nesmw(ibmw); */
 213         struct nes_qp *nesqp = to_nesqp(ibqp);
 214         struct nes_hw_qp_wqe *wqe;
 215         unsigned long flags = 0;
 216         u32 head;
 217         u32 wqe_misc = 0;
 218         u32 qsize;
 219
 220         if (nesqp->ibqp_state > IB_QPS_RTS)
 221                 return -EINVAL;
 222
 223         spin_lock_irqsave(&nesqp->lock, flags);
 224
 225         head = nesqp->hwqp.sq_head;
 226         qsize = nesqp->hwqp.sq_tail;
 227
 228         /* Check for SQ overflow */
 229         if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
 230                 spin_unlock_irqrestore(&nesqp->lock, flags);
 231                 return -EINVAL;
 232         }
 233
 234         wqe = &nesqp->hwqp.sq_vbase[head];
 235         /* nes_debug(NES_DBG_MR, "processing sq wqe at %p, head = %u.\n", wqe, head); */
 236         nes_fill_init_qp_wqe(wqe, nesqp, head);
 237         u64temp = ibmw_bind->wr_id;
 238         set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX, u64temp);
 239         wqe_misc = NES_IWARP_SQ_OP_BIND;
 240
 241         wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
 242
 243         if (ibmw_bind->send_flags & IB_SEND_SIGNALED)
 244                 wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
 245
 246         if (ibmw_bind->mw_access_flags & IB_ACCESS_REMOTE_WRITE) {
 247                 wqe_misc |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE;
 248         }
 249         if (ibmw_bind->mw_access_flags & IB_ACCESS_REMOTE_READ) {
 250                 wqe_misc |= NES_CQP_STAG_RIGHTS_REMOTE_READ;
 251         }
 252
 253         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_MISC_IDX, wqe_misc);
 254         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_MR_IDX, ibmw_bind->mr->lkey);
 255         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_MW_IDX, ibmw->rkey);
 256         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_LENGTH_LOW_IDX,
 257                         ibmw_bind->length);
 258         wqe->wqe_words[NES_IWARP_SQ_BIND_WQE_LENGTH_HIGH_IDX] = 0;
 259         u64temp = (u64)ibmw_bind->addr;
 260         set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_VA_FBO_LOW_IDX, u64temp);
 261
 262         head++;
 263         if (head >= qsize)
 264                 head = 0;
 265
 266         nesqp->hwqp.sq_head = head;
 267         barrier();
 268
 269         nes_write32(nesdev->regs+NES_WQE_ALLOC,
 270                         (1 << 24) | 0x00800000 | nesqp->hwqp.qp_id);
 271
 272         spin_unlock_irqrestore(&nesqp->lock, flags);
 273
 274         return 0;
 275 }
 276
 277
 278 /**
 279  * nes_alloc_fmr
 280  */
 281 static struct ib_fmr *nes_alloc_fmr(struct ib_pd *ibpd,
 282                 int ibmr_access_flags,
 283                 struct ib_fmr_attr *ibfmr_attr)
 284 {
 285         unsigned long flags;
 286         struct nes_pd *nespd = to_nespd(ibpd);
 287         struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
 288         struct nes_device *nesdev = nesvnic->nesdev;
 289         struct nes_adapter *nesadapter = nesdev->nesadapter;
 290         struct nes_fmr *nesfmr;
 291         struct nes_cqp_request *cqp_request;
 292         struct nes_hw_cqp_wqe *cqp_wqe;
 293         int ret;
 294         u32 stag;
 295         u32 stag_index = 0;
 296         u32 next_stag_index = 0;
 297         u32 driver_key = 0;
 298         u32 opcode = 0;
 299         u8 stag_key = 0;
 300         int i=0;
 301         struct nes_vpbl vpbl;
 302
 303         get_random_bytes(&next_stag_index, sizeof(next_stag_index));
 304         stag_key = (u8)next_stag_index;
 305
 306         driver_key = 0;
 307
 308         next_stag_index >>= 8;
 309         next_stag_index %= nesadapter->max_mr;
 310
 311         ret = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
 312                         nesadapter->max_mr, &stag_index, &next_stag_index);
 313         if (ret) {
 314                 goto failed_resource_alloc;
 315         }
 316
 317         nesfmr = kzalloc(sizeof(*nesfmr), GFP_KERNEL);
 318         if (!nesfmr) {
 319                 ret = -ENOMEM;
 320                 goto failed_fmr_alloc;
 321         }
 322
 323         nesfmr->nesmr.mode = IWNES_MEMREG_TYPE_FMR;
 324         if (ibfmr_attr->max_pages == 1) {
 325                 /* use zero length PBL */
 326                 nesfmr->nesmr.pbl_4k = 0;
 327                 nesfmr->nesmr.pbls_used = 0;
 328         } else if (ibfmr_attr->max_pages <= 32) {
 329                 /* use PBL 256 */
 330                 nesfmr->nesmr.pbl_4k = 0;
 331                 nesfmr->nesmr.pbls_used = 1;
 332         } else if (ibfmr_attr->max_pages <= 512) {
 333                 /* use 4K PBLs */
 334                 nesfmr->nesmr.pbl_4k = 1;
 335                 nesfmr->nesmr.pbls_used = 1;
 336         } else {
 337                 /* use two level 4K PBLs */
 338                 /* add support for two level 256B PBLs */
 339                 nesfmr->nesmr.pbl_4k = 1;
 340                 nesfmr->nesmr.pbls_used = 1 + (ibfmr_attr->max_pages >> 9) +
 341                                 ((ibfmr_attr->max_pages & 511) ? 1 : 0);
 342         }
 343         /* Register the region with the adapter */
 344         spin_lock_irqsave(&nesadapter->pbl_lock, flags);
 345
 346         /* track PBL resources */
 347         if (nesfmr->nesmr.pbls_used != 0) {
 348                 if (nesfmr->nesmr.pbl_4k) {
 349                         if (nesfmr->nesmr.pbls_used > nesadapter->free_4kpbl) {
 350                                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
 351                                 ret = -ENOMEM;
 352                                 goto failed_vpbl_avail;
 353                         } else {
 354                                 nesadapter->free_4kpbl -= nesfmr->nesmr.pbls_used;
 355                         }
 356                 } else {
 357                         if (nesfmr->nesmr.pbls_used > nesadapter->free_256pbl) {
 358                                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
 359                                 ret = -ENOMEM;
 360                                 goto failed_vpbl_avail;
 361                         } else {
 362                                 nesadapter->free_256pbl -= nesfmr->nesmr.pbls_used;
 363                         }
 364                 }
 365         }
 366
 367         /* one level pbl */
 368         if (nesfmr->nesmr.pbls_used == 0) {
 369                 nesfmr->root_vpbl.pbl_vbase = NULL;
 370                 nes_debug(NES_DBG_MR,  "zero level pbl \n");
 371         } else if (nesfmr->nesmr.pbls_used == 1) {
 372                 /* can change it to kmalloc & dma_map_single */
 373                 nesfmr->root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
 374                                 &nesfmr->root_vpbl.pbl_pbase);
 375                 if (!nesfmr->root_vpbl.pbl_vbase) {
 376                         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
 377                         ret = -ENOMEM;
 378                         goto failed_vpbl_alloc;
 379                 }
 380                 nesfmr->leaf_pbl_cnt = 0;
 381                 nes_debug(NES_DBG_MR, "one level pbl, root_vpbl.pbl_vbase=%p \n",
 382                                 nesfmr->root_vpbl.pbl_vbase);
 383         }
 384         /* two level pbl */
 385         else {
 386                 nesfmr->root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 8192,
 387                                 &nesfmr->root_vpbl.pbl_pbase);
 388                 if (!nesfmr->root_vpbl.pbl_vbase) {
 389                         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
 390                         ret = -ENOMEM;
 391                         goto failed_vpbl_alloc;
 392                 }
 393
 394                 nesfmr->leaf_pbl_cnt = nesfmr->nesmr.pbls_used-1;
 395                 nesfmr->root_vpbl.leaf_vpbl = kzalloc(sizeof(*nesfmr->root_vpbl.leaf_vpbl)*1024, GFP_ATOMIC);
 396                 if (!nesfmr->root_vpbl.leaf_vpbl) {
 397                         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
 398                         ret = -ENOMEM;
 399                         goto failed_leaf_vpbl_alloc;
 400                 }
 401
 402                 nes_debug(NES_DBG_MR, "two level pbl, root_vpbl.pbl_vbase=%p"
 403                                 " leaf_pbl_cnt=%d root_vpbl.leaf_vpbl=%p\n",
 404                                 nesfmr->root_vpbl.pbl_vbase, nesfmr->leaf_pbl_cnt, nesfmr->root_vpbl.leaf_vpbl);
 405
 406                 for (i=0; i<nesfmr->leaf_pbl_cnt; i++)
 407                         nesfmr->root_vpbl.leaf_vpbl[i].pbl_vbase = NULL;
 408
 409                 for (i=0; i<nesfmr->leaf_pbl_cnt; i++) {
 410                         vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
 411                                         &vpbl.pbl_pbase);
 412
 413                         if (!vpbl.pbl_vbase) {
 414                                 ret = -ENOMEM;
 415                                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
 416                                 goto failed_leaf_vpbl_pages_alloc;
 417                         }
 418
 419                         nesfmr->root_vpbl.pbl_vbase[i].pa_low = cpu_to_le32((u32)vpbl.pbl_pbase);
 420                         nesfmr->root_vpbl.pbl_vbase[i].pa_high = cpu_to_le32((u32)((((u64)vpbl.pbl_pbase)>>32)));
 421                         nesfmr->root_vpbl.leaf_vpbl[i] = vpbl;
 422
 423                         nes_debug(NES_DBG_MR, "pbase_low=0x%x, pbase_high=0x%x, vpbl=%p\n",
 424                                         nesfmr->root_vpbl.pbl_vbase[i].pa_low,
 425                                         nesfmr->root_vpbl.pbl_vbase[i].pa_high,
 426                                         &nesfmr->root_vpbl.leaf_vpbl[i]);
 427                 }
 428         }
 429         nesfmr->ib_qp = NULL;
 430         nesfmr->access_rights =0;
 431
 432         stag = stag_index << 8;
 433         stag |= driver_key;
 434         stag += (u32)stag_key;
 435
 436         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
 437         cqp_request = nes_get_cqp_request(nesdev);
 438         if (cqp_request == NULL) {
 439                 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
 440                 ret = -ENOMEM;
 441                 goto failed_leaf_vpbl_pages_alloc;
 442         }
 443         cqp_request->waiting = 1;
 444         cqp_wqe = &cqp_request->cqp_wqe;
 445
 446         nes_debug(NES_DBG_MR, "Registering STag 0x%08X, index = 0x%08X\n",
 447                         stag, stag_index);
 448
 449         opcode = NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_VA_TO | NES_CQP_STAG_MR;
 450
 451         if (nesfmr->nesmr.pbl_4k == 1)
 452                 opcode |= NES_CQP_STAG_PBL_BLK_SIZE;
 453
 454         if (ibmr_access_flags & IB_ACCESS_REMOTE_WRITE) {
 455                 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE |
 456                                 NES_CQP_STAG_RIGHTS_LOCAL_WRITE | NES_CQP_STAG_REM_ACC_EN;
 457                 nesfmr->access_rights |=
 458                                 NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_RIGHTS_LOCAL_WRITE |
 459                                 NES_CQP_STAG_REM_ACC_EN;
 460         }
 461
 462         if (ibmr_access_flags & IB_ACCESS_REMOTE_READ) {
 463                 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_READ |
 464                                 NES_CQP_STAG_RIGHTS_LOCAL_READ | NES_CQP_STAG_REM_ACC_EN;
 465                 nesfmr->access_rights |=
 466                                 NES_CQP_STAG_RIGHTS_REMOTE_READ | NES_CQP_STAG_RIGHTS_LOCAL_READ |
 467                                 NES_CQP_STAG_REM_ACC_EN;
 468         }
 469
 470         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
 471         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
 472         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX, (nespd->pd_id & 0x00007fff));
 473         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
 474
 475         cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX] =
 476                         cpu_to_le32((nesfmr->nesmr.pbls_used>1) ?
 477                         (nesfmr->nesmr.pbls_used-1) : nesfmr->nesmr.pbls_used);
 478
 479         atomic_set(&cqp_request->refcount, 2);
 480         nes_post_cqp_request(nesdev, cqp_request);
 481
 482         /* Wait for CQP */
 483         ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
 484                         NES_EVENT_TIMEOUT);
 485         nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
 486                         " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
 487                         stag, ret, cqp_request->major_code, cqp_request->minor_code);
 488
 489         if ((!ret) || (cqp_request->major_code)) {
 490                 nes_put_cqp_request(nesdev, cqp_request);
 491                 ret = (!ret) ? -ETIME : -EIO;
 492                 goto failed_leaf_vpbl_pages_alloc;
 493         }
 494         nes_put_cqp_request(nesdev, cqp_request);
 495         nesfmr->nesmr.ibfmr.lkey = stag;
 496         nesfmr->nesmr.ibfmr.rkey = stag;
 497         nesfmr->attr = *ibfmr_attr;
 498
 499         return &nesfmr->nesmr.ibfmr;
 500
 501         failed_leaf_vpbl_pages_alloc:
 502         /* unroll all allocated pages */
 503         for (i=0; i<nesfmr->leaf_pbl_cnt; i++) {
 504                 if (nesfmr->root_vpbl.leaf_vpbl[i].pbl_vbase) {
 505                         pci_free_consistent(nesdev->pcidev, 4096, nesfmr->root_vpbl.leaf_vpbl[i].pbl_vbase,
 506                                         nesfmr->root_vpbl.leaf_vpbl[i].pbl_pbase);
 507                 }
 508         }
 509         if (nesfmr->root_vpbl.leaf_vpbl)
 510                 kfree(nesfmr->root_vpbl.leaf_vpbl);
 511
 512         failed_leaf_vpbl_alloc:
 513         if (nesfmr->leaf_pbl_cnt == 0) {
 514                 if (nesfmr->root_vpbl.pbl_vbase)
 515                         pci_free_consistent(nesdev->pcidev, 4096, nesfmr->root_vpbl.pbl_vbase,
 516                                         nesfmr->root_vpbl.pbl_pbase);
 517         } else
 518                 pci_free_consistent(nesdev->pcidev, 8192, nesfmr->root_vpbl.pbl_vbase,
 519                                 nesfmr->root_vpbl.pbl_pbase);
 520
 521         failed_vpbl_alloc:
 522         if (nesfmr->nesmr.pbls_used != 0) {
 523                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
 524                 if (nesfmr->nesmr.pbl_4k)
 525                         nesadapter->free_4kpbl += nesfmr->nesmr.pbls_used;
 526                 else
 527                         nesadapter->free_256pbl += nesfmr->nesmr.pbls_used;
 528                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
 529         }
 530
 531 failed_vpbl_avail:
 532         kfree(nesfmr);
 533
 534         failed_fmr_alloc:
 535         nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
 536
 537         failed_resource_alloc:
 538         return ERR_PTR(ret);
 539 }
 540
 541
 542 /**
 543  * nes_dealloc_fmr
 544  */
 545 static int nes_dealloc_fmr(struct ib_fmr *ibfmr)
 546 {
 547         unsigned long flags;
 548         struct nes_mr *nesmr = to_nesmr_from_ibfmr(ibfmr);
 549         struct nes_fmr *nesfmr = to_nesfmr(nesmr);
 550         struct nes_vnic *nesvnic = to_nesvnic(ibfmr->device);
 551         struct nes_device *nesdev = nesvnic->nesdev;
 552         struct nes_adapter *nesadapter = nesdev->nesadapter;
 553         int i = 0;
 554         int rc;
 555
 556         /* free the resources */
 557         if (nesfmr->leaf_pbl_cnt == 0) {
 558                 /* single PBL case */
 559                 if (nesfmr->root_vpbl.pbl_vbase)
 560                         pci_free_consistent(nesdev->pcidev, 4096, nesfmr->root_vpbl.pbl_vbase,
 561                                         nesfmr->root_vpbl.pbl_pbase);
 562         } else {
 563                 for (i = 0; i < nesfmr->leaf_pbl_cnt; i++) {
 564                         pci_free_consistent(nesdev->pcidev, 4096, nesfmr->root_vpbl.leaf_vpbl[i].pbl_vbase,
 565                                         nesfmr->root_vpbl.leaf_vpbl[i].pbl_pbase);
 566                 }
 567                 kfree(nesfmr->root_vpbl.leaf_vpbl);
 568                 pci_free_consistent(nesdev->pcidev, 8192, nesfmr->root_vpbl.pbl_vbase,
 569                                 nesfmr->root_vpbl.pbl_pbase);
 570         }
 571         nesmr->ibmw.device = ibfmr->device;
 572         nesmr->ibmw.pd = ibfmr->pd;
 573         nesmr->ibmw.rkey = ibfmr->rkey;
 574         nesmr->ibmw.uobject = NULL;
 575
 576         rc = nes_dealloc_mw(&nesmr->ibmw);
 577
 578         if ((rc == 0) && (nesfmr->nesmr.pbls_used != 0)) {
 579                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
 580                 if (nesfmr->nesmr.pbl_4k) {
 581                         nesadapter->free_4kpbl += nesfmr->nesmr.pbls_used;
 582                         WARN_ON(nesadapter->free_4kpbl > nesadapter->max_4kpbl);
 583                 } else {
 584                         nesadapter->free_256pbl += nesfmr->nesmr.pbls_used;
 585                         WARN_ON(nesadapter->free_256pbl > nesadapter->max_256pbl);
 586                 }
 587                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
 588         }
 589
 590         return rc;
 591 }
 592
 593
 594 /**
 595  * nes_map_phys_fmr
 596  */
 597 static int nes_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list,
 598                 int list_len, u64 iova)
 599 {
 600         return 0;
 601 }
 602
 603
 604 /**
 605  * nes_unmap_frm
 606  */
 607 static int nes_unmap_fmr(struct list_head *ibfmr_list)
 608 {
 609         return 0;
 610 }
 611
 612
 613
 614 /**
 615  * nes_query_device
 616  */
 617 static int nes_query_device(struct ib_device *ibdev, struct ib_device_attr *props)
 618 {
 619         struct nes_vnic *nesvnic = to_nesvnic(ibdev);
 620         struct nes_device *nesdev = nesvnic->nesdev;
 621         struct nes_ib_device *nesibdev = nesvnic->nesibdev;
 622
 623         memset(props, 0, sizeof(*props));
 624         memcpy(&props->sys_image_guid, nesvnic->netdev->dev_addr, 6);
 625
 626         props->fw_ver = nesdev->nesadapter->fw_ver;
 627         props->device_cap_flags = nesdev->nesadapter->device_cap_flags;
 628         props->vendor_id = nesdev->nesadapter->vendor_id;
 629         props->vendor_part_id = nesdev->nesadapter->vendor_part_id;
 630         props->hw_ver = nesdev->nesadapter->hw_rev;
 631         props->max_mr_size = 0x80000000;
 632         props->max_qp = nesibdev->max_qp;
 633         props->max_qp_wr = nesdev->nesadapter->max_qp_wr - 2;
 634         props->max_sge = nesdev->nesadapter->max_sge;
 635         props->max_cq = nesibdev->max_cq;
 636         props->max_cqe = nesdev->nesadapter->max_cqe - 1;
 637         props->max_mr = nesibdev->max_mr;
 638         props->max_mw = nesibdev->max_mr;
 639         props->max_pd = nesibdev->max_pd;
 640         props->max_sge_rd = 1;
 641         switch (nesdev->nesadapter->max_irrq_wr) {
 642                 case 0:
 643                         props->max_qp_rd_atom = 1;
 644                         break;
 645                 case 1:
 646                         props->max_qp_rd_atom = 4;
 647                         break;
 648                 case 2:
 649                         props->max_qp_rd_atom = 16;
 650                         break;
 651                 case 3:
 652                         props->max_qp_rd_atom = 32;
 653                         break;
 654                 default:
 655                         props->max_qp_rd_atom = 0;
 656         }
 657         props->max_qp_init_rd_atom = props->max_qp_rd_atom;
 658         props->atomic_cap = IB_ATOMIC_NONE;
 659         props->max_map_per_fmr = 1;
 660
 661         return 0;
 662 }
 663
 664
 665 /**
 666  * nes_query_port
 667  */
 668 static int nes_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props)
 669 {
 670         memset(props, 0, sizeof(*props));
 671
 672         props->max_mtu = IB_MTU_2048;
 673         props->active_mtu = IB_MTU_2048;
 674         props->lid = 1;
 675         props->lmc = 0;
 676         props->sm_lid = 0;
 677         props->sm_sl = 0;
 678         props->state = IB_PORT_ACTIVE;
 679         props->phys_state = 0;
 680         props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP |
 681                         IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
 682         props->gid_tbl_len = 1;
 683         props->pkey_tbl_len = 1;
 684         props->qkey_viol_cntr = 0;
 685         props->active_width = IB_WIDTH_4X;
 686         props->active_speed = 1;
 687         props->max_msg_sz = 0x80000000;
 688
 689         return 0;
 690 }
 691
 692
 693 /**
 694  * nes_modify_port
 695  */
 696 static int nes_modify_port(struct ib_device *ibdev, u8 port,
 697                 int port_modify_mask, struct ib_port_modify *props)
 698 {
 699         return 0;
 700 }
 701
 702
 703 /**
 704  * nes_query_pkey
 705  */
 706 static int nes_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
 707 {
 708         *pkey = 0;
 709         return 0;
 710 }
 711
 712
 713 /**
 714  * nes_query_gid
 715  */
 716 static int nes_query_gid(struct ib_device *ibdev, u8 port,
 717                 int index, union ib_gid *gid)
 718 {
 719         struct nes_vnic *nesvnic = to_nesvnic(ibdev);
 720
 721         memset(&(gid->raw[0]), 0, sizeof(gid->raw));
 722         memcpy(&(gid->raw[0]), nesvnic->netdev->dev_addr, 6);
 723
 724         return 0;
 725 }
 726
 727
 728 /**
 729  * nes_alloc_ucontext - Allocate the user context data structure. This keeps track
 730  * of all objects associated with a particular user-mode client.
 731  */
 732 static struct ib_ucontext *nes_alloc_ucontext(struct ib_device *ibdev,
 733                 struct ib_udata *udata)
 734 {
 735         struct nes_vnic *nesvnic = to_nesvnic(ibdev);
 736         struct nes_device *nesdev = nesvnic->nesdev;
 737         struct nes_adapter *nesadapter = nesdev->nesadapter;
 738         struct nes_alloc_ucontext_req req;
 739         struct nes_alloc_ucontext_resp uresp;
 740         struct nes_ucontext *nes_ucontext;
 741         struct nes_ib_device *nesibdev = nesvnic->nesibdev;
 742
 743
 744         if (ib_copy_from_udata(&req, udata, sizeof(struct nes_alloc_ucontext_req))) {
 745                 printk(KERN_ERR PFX "Invalid structure size on allocate user context.\n");
 746                 return ERR_PTR(-EINVAL);
 747         }
 748
 749         if (req.userspace_ver != NES_ABI_USERSPACE_VER) {
 750                 printk(KERN_ERR PFX "Invalid userspace driver version detected. Detected version %d, should be %d\n",
 751                         req.userspace_ver, NES_ABI_USERSPACE_VER);
 752                 return ERR_PTR(-EINVAL);
 753         }
 754
 755
 756         memset(&uresp, 0, sizeof uresp);
 757
 758         uresp.max_qps = nesibdev->max_qp;
 759         uresp.max_pds = nesibdev->max_pd;
 760         uresp.wq_size = nesdev->nesadapter->max_qp_wr * 2;
 761         uresp.virtwq = nesadapter->virtwq;
 762         uresp.kernel_ver = NES_ABI_KERNEL_VER;
 763
 764         nes_ucontext = kzalloc(sizeof *nes_ucontext, GFP_KERNEL);
 765         if (!nes_ucontext)
 766                 return ERR_PTR(-ENOMEM);
 767
 768         nes_ucontext->nesdev = nesdev;
 769         nes_ucontext->mmap_wq_offset = uresp.max_pds;
 770         nes_ucontext->mmap_cq_offset = nes_ucontext->mmap_wq_offset +
 771                         ((sizeof(struct nes_hw_qp_wqe) * uresp.max_qps * 2) + PAGE_SIZE-1) /
 772                         PAGE_SIZE;
 773
 774
 775         if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
 776                 kfree(nes_ucontext);
 777                 return ERR_PTR(-EFAULT);
 778         }
 779
 780         INIT_LIST_HEAD(&nes_ucontext->cq_reg_mem_list);
 781         INIT_LIST_HEAD(&nes_ucontext->qp_reg_mem_list);
 782         atomic_set(&nes_ucontext->usecnt, 1);
 783         return &nes_ucontext->ibucontext;
 784 }
 785
 786
 787 /**
 788  * nes_dealloc_ucontext
 789  */
 790 static int nes_dealloc_ucontext(struct ib_ucontext *context)
 791 {
 792         /* struct nes_vnic *nesvnic = to_nesvnic(context->device); */
 793         /* struct nes_device *nesdev = nesvnic->nesdev; */
 794         struct nes_ucontext *nes_ucontext = to_nesucontext(context);
 795
 796         if (!atomic_dec_and_test(&nes_ucontext->usecnt))
 797           return 0;
 798         kfree(nes_ucontext);
 799         return 0;
 800 }
 801
 802
 803 /**
 804  * nes_mmap
 805  */
 806 static int nes_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
 807 {
 808         unsigned long index;
 809         struct nes_vnic *nesvnic = to_nesvnic(context->device);
 810         struct nes_device *nesdev = nesvnic->nesdev;
 811         /* struct nes_adapter *nesadapter = nesdev->nesadapter; */
 812         struct nes_ucontext *nes_ucontext;
 813         struct nes_qp *nesqp;
 814
 815         nes_ucontext = to_nesucontext(context);
 816
 817
 818         if (vma->vm_pgoff >= nes_ucontext->mmap_wq_offset) {
 819                 index = (vma->vm_pgoff - nes_ucontext->mmap_wq_offset) * PAGE_SIZE;
 820                 index /= ((sizeof(struct nes_hw_qp_wqe) * nesdev->nesadapter->max_qp_wr * 2) +
 821                                 PAGE_SIZE-1) & (~(PAGE_SIZE-1));
 822                 if (!test_bit(index, nes_ucontext->allocated_wqs)) {
 823                         nes_debug(NES_DBG_MMAP, "wq %lu not allocated\n", index);
 824                         return -EFAULT;
 825                 }
 826                 nesqp = nes_ucontext->mmap_nesqp[index];
 827                 if (nesqp == NULL) {
 828                         nes_debug(NES_DBG_MMAP, "wq %lu has a NULL QP base.\n", index);
 829                         return -EFAULT;
 830                 }
 831                 if (remap_pfn_range(vma, vma->vm_start,
 832                                 virt_to_phys(nesqp->hwqp.sq_vbase) >> PAGE_SHIFT,
 833                                 vma->vm_end - vma->vm_start,
 834                                 vma->vm_page_prot)) {
 835                         nes_debug(NES_DBG_MMAP, "remap_pfn_range failed.\n");
 836                         return -EAGAIN;
 837                 }
 838                 vma->vm_private_data = nesqp;
 839                 return 0;
 840         } else {
 841                 index = vma->vm_pgoff;
 842                 if (!test_bit(index, nes_ucontext->allocated_doorbells))
 843                         return -EFAULT;
 844
 845                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 846                 if (io_remap_pfn_range(vma, vma->vm_start,
 847                                 (nesdev->doorbell_start +
 848                                 ((nes_ucontext->mmap_db_index[index] - nesdev->base_doorbell_index) * 4096))
 849                                 >> PAGE_SHIFT, PAGE_SIZE, vma->vm_page_prot))
 850                         return -EAGAIN;
 851                 vma->vm_private_data = nes_ucontext;
 852                 return 0;
 853         }
 854
 855         return -ENOSYS;
 856 }
 857
 858
 859 /**
 860  * nes_alloc_pd
 861  */
 862 static struct ib_pd *nes_alloc_pd(struct ib_device *ibdev,
 863                 struct ib_ucontext *context, struct ib_udata *udata)
 864 {
 865         struct nes_pd *nespd;
 866         struct nes_vnic *nesvnic = to_nesvnic(ibdev);
 867         struct nes_device *nesdev = nesvnic->nesdev;
 868         struct nes_adapter *nesadapter = nesdev->nesadapter;
 869         struct nes_ucontext *nesucontext;
 870         struct nes_alloc_pd_resp uresp;
 871         u32 pd_num = 0;
 872         int err;
 873
 874         nes_debug(NES_DBG_PD, "nesvnic=%p, netdev=%p %s, ibdev=%p, context=%p, netdev refcnt=%u\n",
 875                         nesvnic, nesdev->netdev[0], nesdev->netdev[0]->name, ibdev, context,
 876                         atomic_read(&nesvnic->netdev->refcnt));
 877
 878         err = nes_alloc_resource(nesadapter, nesadapter->allocated_pds,
 879                         nesadapter->max_pd, &pd_num, &nesadapter->next_pd);
 880         if (err) {
 881                 return ERR_PTR(err);
 882         }
 883
 884         nespd = kzalloc(sizeof (struct nes_pd), GFP_KERNEL);
 885         if (!nespd) {
 886                 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
 887                 return ERR_PTR(-ENOMEM);
 888         }
 889
 890         nes_debug(NES_DBG_PD, "Allocating PD (%p) for ib device %s\n",
 891                         nespd, nesvnic->nesibdev->ibdev.name);
 892
 893         nespd->pd_id = (pd_num << (PAGE_SHIFT-12)) + nesadapter->base_pd;
 894
 895         if (context) {
 896                 nesucontext = to_nesucontext(context);
 897                 nespd->mmap_db_index = find_next_zero_bit(nesucontext->allocated_doorbells,
 898                                 NES_MAX_USER_DB_REGIONS, nesucontext->first_free_db);
 899                 nes_debug(NES_DBG_PD, "find_first_zero_biton doorbells returned %u, mapping pd_id %u.\n",
 900                                 nespd->mmap_db_index, nespd->pd_id);
 901                 if (nespd->mmap_db_index >= NES_MAX_USER_DB_REGIONS) {
 902                         nes_debug(NES_DBG_PD, "mmap_db_index > MAX\n");
 903                         nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
 904                         kfree(nespd);
 905                         return ERR_PTR(-ENOMEM);
 906                 }
 907
 908                 uresp.pd_id = nespd->pd_id;
 909                 uresp.mmap_db_index = nespd->mmap_db_index;
 910                 if (ib_copy_to_udata(udata, &uresp, sizeof (struct nes_alloc_pd_resp))) {
 911                         nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
 912                         kfree(nespd);
 913                         return ERR_PTR(-EFAULT);
 914                 }
 915
 916                 set_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
 917                 nesucontext->mmap_db_index[nespd->mmap_db_index] = nespd->pd_id;
 918                 nesucontext->first_free_db = nespd->mmap_db_index + 1;
 919         }
 920
 921         nes_debug(NES_DBG_PD, "PD%u structure located @%p.\n", nespd->pd_id, nespd);
 922         return &nespd->ibpd;
 923 }
 924
 925
 926 /**
 927  * nes_dealloc_pd
 928  */
 929 static int nes_dealloc_pd(struct ib_pd *ibpd)
 930 {
 931         struct nes_ucontext *nesucontext;
 932         struct nes_pd *nespd = to_nespd(ibpd);
 933         struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
 934         struct nes_device *nesdev = nesvnic->nesdev;
 935         struct nes_adapter *nesadapter = nesdev->nesadapter;
 936
 937         if ((ibpd->uobject) && (ibpd->uobject->context)) {
 938                 nesucontext = to_nesucontext(ibpd->uobject->context);
 939                 nes_debug(NES_DBG_PD, "Clearing bit %u from allocated doorbells\n",
 940                                 nespd->mmap_db_index);
 941                 clear_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
 942                 nesucontext->mmap_db_index[nespd->mmap_db_index] = 0;
 943                 if (nesucontext->first_free_db > nespd->mmap_db_index) {
 944                         nesucontext->first_free_db = nespd->mmap_db_index;
 945                 }
 946         }
 947
 948         nes_debug(NES_DBG_PD, "Deallocating PD%u structure located @%p.\n",
 949                         nespd->pd_id, nespd);
 950         nes_free_resource(nesadapter, nesadapter->allocated_pds,
 951                         (nespd->pd_id-nesadapter->base_pd)>>(PAGE_SHIFT-12));
 952         kfree(nespd);
 953
 954         return 0;
 955 }
 956
 957
 958 /**
 959  * nes_create_ah
 960  */
 961 static struct ib_ah *nes_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
 962 {
 963         return ERR_PTR(-ENOSYS);
 964 }
 965
 966
 967 /**
 968  * nes_destroy_ah
 969  */
 970 static int nes_destroy_ah(struct ib_ah *ah)
 971 {
 972         return -ENOSYS;
 973 }
 974
 975
 976 /**
 977  * nes_get_encoded_size
 978  */
 979 static inline u8 nes_get_encoded_size(int *size)
 980 {
 981         u8 encoded_size = 0;
 982         if (*size <= 32) {
 983                 *size = 32;
 984                 encoded_size = 1;
 985         } else if (*size <= 128) {
 986                 *size = 128;
 987                 encoded_size = 2;
 988         } else if (*size <= 512) {
 989                 *size = 512;
 990                 encoded_size = 3;
 991         }
 992         return (encoded_size);
 993 }
 994
 995
 996
 997 /**
 998  * nes_setup_virt_qp
 999  */
1000 static int nes_setup_virt_qp(struct nes_qp *nesqp, struct nes_pbl *nespbl,
1001                 struct nes_vnic *nesvnic, int sq_size, int rq_size)
1002 {
1003         unsigned long flags;
1004         void *mem;
1005         __le64 *pbl = NULL;
1006         __le64 *tpbl;
1007         __le64 *pblbuffer;
1008         struct nes_device *nesdev = nesvnic->nesdev;
1009         struct nes_adapter *nesadapter = nesdev->nesadapter;
1010         u32 pbl_entries;
1011         u8 rq_pbl_entries;
1012         u8 sq_pbl_entries;
1013
1014         pbl_entries = nespbl->pbl_size >> 3;
1015         nes_debug(NES_DBG_QP, "Userspace PBL, pbl_size=%u, pbl_entries = %d pbl_vbase=%p, pbl_pbase=%lx\n",
1016                         nespbl->pbl_size, pbl_entries,
1017                         (void *)nespbl->pbl_vbase,
1018                         (unsigned long) nespbl->pbl_pbase);
1019         pbl = (__le64 *) nespbl->pbl_vbase; /* points to first pbl entry */
1020         /* now lets set the sq_vbase as well as rq_vbase addrs we will assign */
1021         /* the first pbl to be fro the rq_vbase... */
1022         rq_pbl_entries = (rq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
1023         sq_pbl_entries = (sq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
1024         nesqp->hwqp.sq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
1025         if (!nespbl->page) {
1026                 nes_debug(NES_DBG_QP, "QP nespbl->page is NULL \n");
1027                 kfree(nespbl);
1028                 return -ENOMEM;
1029         }
1030
1031         nesqp->hwqp.sq_vbase = kmap(nespbl->page);
1032         nesqp->page = nespbl->page;
1033         if (!nesqp->hwqp.sq_vbase) {
1034                 nes_debug(NES_DBG_QP, "QP sq_vbase kmap failed\n");
1035                 kfree(nespbl);
1036                 return -ENOMEM;
1037         }
1038
1039         /* Now to get to sq.. we need to calculate how many */
1040         /* PBL entries were used by the rq.. */
1041         pbl += sq_pbl_entries;
1042         nesqp->hwqp.rq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
1043         /* nesqp->hwqp.rq_vbase = bus_to_virt(*pbl); */
1044         /*nesqp->hwqp.rq_vbase = phys_to_virt(*pbl); */
1045
1046         nes_debug(NES_DBG_QP, "QP sq_vbase= %p sq_pbase=%lx rq_vbase=%p rq_pbase=%lx\n",
1047                   nesqp->hwqp.sq_vbase, (unsigned long) nesqp->hwqp.sq_pbase,
1048                   nesqp->hwqp.rq_vbase, (unsigned long) nesqp->hwqp.rq_pbase);
1049         spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1050         if (!nesadapter->free_256pbl) {
1051                 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1052                                 nespbl->pbl_pbase);
1053                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1054                 kunmap(nesqp->page);
1055                 kfree(nespbl);
1056                 return -ENOMEM;
1057         }
1058         nesadapter->free_256pbl--;
1059         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1060
1061         nesqp->pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 256, &nesqp->pbl_pbase);
1062         pblbuffer = nesqp->pbl_vbase;
1063         if (!nesqp->pbl_vbase) {
1064                 /* memory allocated during nes_reg_user_mr() */
1065                 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1066                                     nespbl->pbl_pbase);
1067                 kfree(nespbl);
1068                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1069                 nesadapter->free_256pbl++;
1070                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1071                 kunmap(nesqp->page);
1072                 return -ENOMEM;
1073         }
1074         memset(nesqp->pbl_vbase, 0, 256);
1075         /* fill in the page address in the pbl buffer.. */
1076         tpbl = pblbuffer + 16;
1077         pbl = (__le64 *)nespbl->pbl_vbase;
1078         while (sq_pbl_entries--)
1079                 *tpbl++ = *pbl++;
1080         tpbl = pblbuffer;
1081         while (rq_pbl_entries--)
1082                 *tpbl++ = *pbl++;
1083
1084         /* done with memory allocated during nes_reg_user_mr() */
1085         pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1086                             nespbl->pbl_pbase);
1087         kfree(nespbl);
1088
1089         nesqp->qp_mem_size =
1090                         max((u32)sizeof(struct nes_qp_context), ((u32)256)) + 256;     /* this is Q2 */
1091         /* Round up to a multiple of a page */
1092         nesqp->qp_mem_size += PAGE_SIZE - 1;
1093         nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
1094
1095         mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1096                         &nesqp->hwqp.q2_pbase);
1097
1098         if (!mem) {
1099                 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase);
1100                 nesqp->pbl_vbase = NULL;
1101                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1102                 nesadapter->free_256pbl++;
1103                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1104                 kunmap(nesqp->page);
1105                 return -ENOMEM;
1106         }
1107         nesqp->hwqp.q2_vbase = mem;
1108         mem += 256;
1109         memset(nesqp->hwqp.q2_vbase, 0, 256);
1110         nesqp->nesqp_context = mem;
1111         memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
1112         nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
1113
1114         return 0;
1115 }
1116
1117
1118 /**
1119  * nes_setup_mmap_qp
1120  */
1121 static int nes_setup_mmap_qp(struct nes_qp *nesqp, struct nes_vnic *nesvnic,
1122                 int sq_size, int rq_size)
1123 {
1124         void *mem;
1125         struct nes_device *nesdev = nesvnic->nesdev;
1126
1127         nesqp->qp_mem_size = (sizeof(struct nes_hw_qp_wqe) * sq_size) +
1128                         (sizeof(struct nes_hw_qp_wqe) * rq_size) +
1129                         max((u32)sizeof(struct nes_qp_context), ((u32)256)) +
1130                         256; /* this is Q2 */
1131         /* Round up to a multiple of a page */
1132         nesqp->qp_mem_size += PAGE_SIZE - 1;
1133         nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
1134
1135         mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1136                         &nesqp->hwqp.sq_pbase);
1137         if (!mem)
1138                 return -ENOMEM;
1139         nes_debug(NES_DBG_QP, "PCI consistent memory for "
1140                         "host descriptor rings located @ %p (pa = 0x%08lX.) size = %u.\n",
1141                         mem, (unsigned long)nesqp->hwqp.sq_pbase, nesqp->qp_mem_size);
1142
1143         memset(mem, 0, nesqp->qp_mem_size);
1144
1145         nesqp->hwqp.sq_vbase = mem;
1146         mem += sizeof(struct nes_hw_qp_wqe) * sq_size;
1147
1148         nesqp->hwqp.rq_vbase = mem;
1149         nesqp->hwqp.rq_pbase = nesqp->hwqp.sq_pbase +
1150                         sizeof(struct nes_hw_qp_wqe) * sq_size;
1151         mem += sizeof(struct nes_hw_qp_wqe) * rq_size;
1152
1153         nesqp->hwqp.q2_vbase = mem;
1154         nesqp->hwqp.q2_pbase = nesqp->hwqp.rq_pbase +
1155                         sizeof(struct nes_hw_qp_wqe) * rq_size;
1156         mem += 256;
1157         memset(nesqp->hwqp.q2_vbase, 0, 256);
1158
1159         nesqp->nesqp_context = mem;
1160         nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
1161         memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
1162         return 0;
1163 }
1164
1165
1166 /**
1167  * nes_free_qp_mem() is to free up the qp's pci_alloc_consistent() memory.
1168  */
1169 static inline void nes_free_qp_mem(struct nes_device *nesdev,
1170                 struct nes_qp *nesqp, int virt_wqs)
1171 {
1172         unsigned long flags;
1173         struct nes_adapter *nesadapter = nesdev->nesadapter;
1174         if (!virt_wqs) {
1175                 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1176                                 nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase);
1177         }else {
1178                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1179                 nesadapter->free_256pbl++;
1180                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1181                 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size, nesqp->hwqp.q2_vbase, nesqp->hwqp.q2_pbase);
1182                 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase );
1183                 nesqp->pbl_vbase = NULL;
1184                 kunmap(nesqp->page);
1185         }
1186 }
1187
1188
1189 /**
1190  * nes_create_qp
1191  */
1192 static struct ib_qp *nes_create_qp(struct ib_pd *ibpd,
1193                 struct ib_qp_init_attr *init_attr, struct ib_udata *udata)
1194 {
1195         u64 u64temp= 0;
1196         u64 u64nesqp = 0;
1197         struct nes_pd *nespd = to_nespd(ibpd);
1198         struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
1199         struct nes_device *nesdev = nesvnic->nesdev;
1200         struct nes_adapter *nesadapter = nesdev->nesadapter;
1201         struct nes_qp *nesqp;
1202         struct nes_cq *nescq;
1203         struct nes_ucontext *nes_ucontext;
1204         struct nes_hw_cqp_wqe *cqp_wqe;
1205         struct nes_cqp_request *cqp_request;
1206         struct nes_create_qp_req req;
1207         struct nes_create_qp_resp uresp;
1208         struct nes_pbl  *nespbl = NULL;
1209         u32 qp_num = 0;
1210         u32 opcode = 0;
1211         /* u32 counter = 0; */
1212         void *mem;
1213         unsigned long flags;
1214         int ret;
1215         int err;
1216         int virt_wqs = 0;
1217         int sq_size;
1218         int rq_size;
1219         u8 sq_encoded_size;
1220         u8 rq_encoded_size;
1221         /* int counter; */
1222
1223         if (init_attr->create_flags)
1224                 return ERR_PTR(-EINVAL);
1225
1226         atomic_inc(&qps_created);
1227         switch (init_attr->qp_type) {
1228                 case IB_QPT_RC:
1229                         if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) {
1230                                 init_attr->cap.max_inline_data = 0;
1231                         } else {
1232                                 init_attr->cap.max_inline_data = 64;
1233                         }
1234                         sq_size = init_attr->cap.max_send_wr;
1235                         rq_size = init_attr->cap.max_recv_wr;
1236
1237                         /* check if the encoded sizes are OK or not... */
1238                         sq_encoded_size = nes_get_encoded_size(&sq_size);
1239                         rq_encoded_size = nes_get_encoded_size(&rq_size);
1240
1241                         if ((!sq_encoded_size) || (!rq_encoded_size)) {
1242                                 nes_debug(NES_DBG_QP, "ERROR bad rq (%u) or sq (%u) size\n",
1243                                                 rq_size, sq_size);
1244                                 return ERR_PTR(-EINVAL);
1245                         }
1246
1247                         init_attr->cap.max_send_wr = sq_size -2;
1248                         init_attr->cap.max_recv_wr = rq_size -1;
1249                         nes_debug(NES_DBG_QP, "RQ size=%u, SQ Size=%u\n", rq_size, sq_size);
1250
1251                         ret = nes_alloc_resource(nesadapter, nesadapter->allocated_qps,
1252                                         nesadapter->max_qp, &qp_num, &nesadapter->next_qp);
1253                         if (ret) {
1254                                 return ERR_PTR(ret);
1255                         }
1256
1257                         /* Need 512 (actually now 1024) byte alignment on this structure */
1258                         mem = kzalloc(sizeof(*nesqp)+NES_SW_CONTEXT_ALIGN-1, GFP_KERNEL);
1259                         if (!mem) {
1260                                 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1261                                 nes_debug(NES_DBG_QP, "Unable to allocate QP\n");
1262                                 return ERR_PTR(-ENOMEM);
1263                         }
1264                         u64nesqp = (unsigned long)mem;
1265                         u64nesqp += ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1266                         u64temp = ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1267                         u64nesqp &= ~u64temp;
1268                         nesqp = (struct nes_qp *)(unsigned long)u64nesqp;
1269                         /* nes_debug(NES_DBG_QP, "nesqp=%p, allocated buffer=%p.  Rounded to closest %u\n",
1270                                         nesqp, mem, NES_SW_CONTEXT_ALIGN); */
1271                         nesqp->allocated_buffer = mem;
1272
1273                         if (udata) {
1274                                 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_create_qp_req))) {
1275                                         nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1276                                         kfree(nesqp->allocated_buffer);
1277                                         nes_debug(NES_DBG_QP, "ib_copy_from_udata() Failed \n");
1278                                         return NULL;
1279                                 }
1280                                 if (req.user_wqe_buffers) {
1281                                         virt_wqs = 1;
1282                                 }
1283                                 if ((ibpd->uobject) && (ibpd->uobject->context)) {
1284                                         nesqp->user_mode = 1;
1285                                         nes_ucontext = to_nesucontext(ibpd->uobject->context);
1286                                         if (virt_wqs) {
1287                                                 err = 1;
1288                                                 list_for_each_entry(nespbl, &nes_ucontext->qp_reg_mem_list, list) {
1289                                                         if (nespbl->user_base == (unsigned long )req.user_wqe_buffers) {
1290                                                                 list_del(&nespbl->list);
1291                                                                 err = 0;
1292                                                                 nes_debug(NES_DBG_QP, "Found PBL for virtual QP. nespbl=%p. user_base=0x%lx\n",
1293                                                                           nespbl, nespbl->user_base);
1294                                                                 break;
1295                                                         }
1296                                                 }
1297                                                 if (err) {
1298                                                         nes_debug(NES_DBG_QP, "Didn't Find PBL for virtual QP. address = %llx.\n",
1299                                                                   (long long unsigned int)req.user_wqe_buffers);
1300                                                         nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1301                                                         kfree(nesqp->allocated_buffer);
1302                                                         return ERR_PTR(-EFAULT);
1303                                                 }
1304                                         }
1305
1306                                         nes_ucontext = to_nesucontext(ibpd->uobject->context);
1307                                         nesqp->mmap_sq_db_index =
1308                                                 find_next_zero_bit(nes_ucontext->allocated_wqs,
1309                                                                    NES_MAX_USER_WQ_REGIONS, nes_ucontext->first_free_wq);
1310                                         /* nes_debug(NES_DBG_QP, "find_first_zero_biton wqs returned %u\n",
1311                                                         nespd->mmap_db_index); */
1312                                         if (nesqp->mmap_sq_db_index >= NES_MAX_USER_WQ_REGIONS) {
1313                                                 nes_debug(NES_DBG_QP,
1314                                                           "db index > max user regions, failing create QP\n");
1315                                                 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1316                                                 if (virt_wqs) {
1317                                                         pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1318                                                                             nespbl->pbl_pbase);
1319                                                         kfree(nespbl);
1320                                                 }
1321                                                 kfree(nesqp->allocated_buffer);
1322                                                 return ERR_PTR(-ENOMEM);
1323                                         }
1324                                         set_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1325                                         nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = nesqp;
1326                                         nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index + 1;
1327                                 } else {
1328                                         nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1329                                         kfree(nesqp->allocated_buffer);
1330                                         return ERR_PTR(-EFAULT);
1331                                 }
1332                         }
1333                         err = (!virt_wqs) ? nes_setup_mmap_qp(nesqp, nesvnic, sq_size, rq_size) :
1334                                         nes_setup_virt_qp(nesqp, nespbl, nesvnic, sq_size, rq_size);
1335                         if (err) {
1336                                 nes_debug(NES_DBG_QP,
1337                                           "error geting qp mem code = %d\n", err);
1338                                 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1339                                 kfree(nesqp->allocated_buffer);
1340                                 return ERR_PTR(-ENOMEM);
1341                         }
1342
1343                         nesqp->hwqp.sq_size = sq_size;
1344                         nesqp->hwqp.sq_encoded_size = sq_encoded_size;
1345                         nesqp->hwqp.sq_head = 1;
1346                         nesqp->hwqp.rq_size = rq_size;
1347                         nesqp->hwqp.rq_encoded_size = rq_encoded_size;
1348                         /* nes_debug(NES_DBG_QP, "nesqp->nesqp_context_pbase = %p\n",
1349                                         (void *)nesqp->nesqp_context_pbase);
1350                         */
1351                         nesqp->hwqp.qp_id = qp_num;
1352                         nesqp->ibqp.qp_num = nesqp->hwqp.qp_id;
1353                         nesqp->nespd = nespd;
1354
1355                         nescq = to_nescq(init_attr->send_cq);
1356                         nesqp->nesscq = nescq;
1357                         nescq = to_nescq(init_attr->recv_cq);
1358                         nesqp->nesrcq = nescq;
1359
1360                         nesqp->nesqp_context->misc |= cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) <<
1361                                         NES_QPCONTEXT_MISC_PCI_FCN_SHIFT);
1362                         nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.rq_encoded_size <<
1363                                         NES_QPCONTEXT_MISC_RQ_SIZE_SHIFT);
1364                         nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.sq_encoded_size <<
1365                                         NES_QPCONTEXT_MISC_SQ_SIZE_SHIFT);
1366                         if (!udata) {
1367                                 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_PRIV_EN);
1368                                 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_FAST_REGISTER_EN);
1369                         }
1370                         nesqp->nesqp_context->cqs = cpu_to_le32(nesqp->nesscq->hw_cq.cq_number +
1371                                         ((u32)nesqp->nesrcq->hw_cq.cq_number << 16));
1372                         u64temp = (u64)nesqp->hwqp.sq_pbase;
1373                         nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1374                         nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1375
1376
1377                         if (!virt_wqs) {
1378                                 u64temp = (u64)nesqp->hwqp.sq_pbase;
1379                                 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1380                                 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1381                                 u64temp = (u64)nesqp->hwqp.rq_pbase;
1382                                 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1383                                 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1384                         } else {
1385                                 u64temp = (u64)nesqp->pbl_pbase;
1386                                 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1387                                 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1388                         }
1389
1390                         /* nes_debug(NES_DBG_QP, "next_qp_nic_index=%u, using nic_index=%d\n",
1391                                         nesvnic->next_qp_nic_index,
1392                                         nesvnic->qp_nic_index[nesvnic->next_qp_nic_index]); */
1393                         spin_lock_irqsave(&nesdev->cqp.lock, flags);
1394                         nesqp->nesqp_context->misc2 |= cpu_to_le32(
1395                                         (u32)nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] <<
1396                                         NES_QPCONTEXT_MISC2_NIC_INDEX_SHIFT);
1397                         nesvnic->next_qp_nic_index++;
1398                         if ((nesvnic->next_qp_nic_index > 3) ||
1399                                         (nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] == 0xf)) {
1400                                 nesvnic->next_qp_nic_index = 0;
1401                         }
1402                         spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
1403
1404                         nesqp->nesqp_context->pd_index_wscale |= cpu_to_le32((u32)nesqp->nespd->pd_id << 16);
1405                         u64temp = (u64)nesqp->hwqp.q2_pbase;
1406                         nesqp->nesqp_context->q2_addr_low = cpu_to_le32((u32)u64temp);
1407                         nesqp->nesqp_context->q2_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1408                         nesqp->nesqp_context->aeq_token_low =  cpu_to_le32((u32)((unsigned long)(nesqp)));
1409                         nesqp->nesqp_context->aeq_token_high =  cpu_to_le32((u32)(upper_32_bits((unsigned long)(nesqp))));
1410                         nesqp->nesqp_context->ird_ord_sizes = cpu_to_le32(NES_QPCONTEXT_ORDIRD_ALSMM |
1411                                         ((((u32)nesadapter->max_irrq_wr) <<
1412                                         NES_QPCONTEXT_ORDIRD_IRDSIZE_SHIFT) & NES_QPCONTEXT_ORDIRD_IRDSIZE_MASK));
1413                         if (disable_mpa_crc) {
1414                                 nes_debug(NES_DBG_QP, "Disabling MPA crc checking due to module option.\n");
1415                                 nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32(NES_QPCONTEXT_ORDIRD_RNMC);
1416                         }
1417
1418
1419                         /* Create the QP */
1420                         cqp_request = nes_get_cqp_request(nesdev);
1421                         if (cqp_request == NULL) {
1422                                 nes_debug(NES_DBG_QP, "Failed to get a cqp_request\n");
1423                                 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1424                                 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1425                                 kfree(nesqp->allocated_buffer);
1426                                 return ERR_PTR(-ENOMEM);
1427                         }
1428                         cqp_request->waiting = 1;
1429                         cqp_wqe = &cqp_request->cqp_wqe;
1430
1431                         if (!virt_wqs) {
1432                                 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP |
1433                                         NES_CQP_QP_IWARP_STATE_IDLE;
1434                         } else {
1435                                 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP | NES_CQP_QP_VIRT_WQS |
1436                                         NES_CQP_QP_IWARP_STATE_IDLE;
1437                         }
1438                         opcode |= NES_CQP_QP_CQS_VALID;
1439                         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1440                         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1441                         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
1442
1443                         u64temp = (u64)nesqp->nesqp_context_pbase;
1444                         set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp);
1445
1446                         atomic_set(&cqp_request->refcount, 2);
1447                         nes_post_cqp_request(nesdev, cqp_request);
1448
1449                         /* Wait for CQP */
1450                         nes_debug(NES_DBG_QP, "Waiting for create iWARP QP%u to complete.\n",
1451                                         nesqp->hwqp.qp_id);
1452                         ret = wait_event_timeout(cqp_request->waitq,
1453                                         (cqp_request->request_done != 0), NES_EVENT_TIMEOUT);
1454                         nes_debug(NES_DBG_QP, "Create iwarp QP%u completed, wait_event_timeout ret=%u,"
1455                                         " nesdev->cqp_head = %u, nesdev->cqp.sq_tail = %u,"
1456                                         " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1457                                         nesqp->hwqp.qp_id, ret, nesdev->cqp.sq_head, nesdev->cqp.sq_tail,
1458                                         cqp_request->major_code, cqp_request->minor_code);
1459                         if ((!ret) || (cqp_request->major_code)) {
1460                                 nes_put_cqp_request(nesdev, cqp_request);
1461                                 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1462                                 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1463                                 kfree(nesqp->allocated_buffer);
1464                                 if (!ret) {
1465                                         return ERR_PTR(-ETIME);
1466                                 } else {
1467                                         return ERR_PTR(-EIO);
1468                                 }
1469                         }
1470
1471                         nes_put_cqp_request(nesdev, cqp_request);
1472
1473                         if (ibpd->uobject) {
1474                                 uresp.mmap_sq_db_index = nesqp->mmap_sq_db_index;
1475                                 uresp.actual_sq_size = sq_size;
1476                                 uresp.actual_rq_size = rq_size;
1477                                 uresp.qp_id = nesqp->hwqp.qp_id;
1478                                 uresp.nes_drv_opt = nes_drv_opt;
1479                                 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
1480                                         nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1481                                         nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1482                                         kfree(nesqp->allocated_buffer);
1483                                         return ERR_PTR(-EFAULT);
1484                                 }
1485                         }
1486
1487                         nes_debug(NES_DBG_QP, "QP%u structure located @%p.Size = %u.\n",
1488                                         nesqp->hwqp.qp_id, nesqp, (u32)sizeof(*nesqp));
1489                         spin_lock_init(&nesqp->lock);
1490                         init_waitqueue_head(&nesqp->state_waitq);
1491                         init_waitqueue_head(&nesqp->kick_waitq);
1492                         nes_add_ref(&nesqp->ibqp);
1493                         break;
1494                 default:
1495                         nes_debug(NES_DBG_QP, "Invalid QP type: %d\n", init_attr->qp_type);
1496                         return ERR_PTR(-EINVAL);
1497         }
1498
1499         /* update the QP table */
1500         nesdev->nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = nesqp;
1501         nes_debug(NES_DBG_QP, "netdev refcnt=%u\n",
1502                         atomic_read(&nesvnic->netdev->refcnt));
1503
1504         return &nesqp->ibqp;
1505 }
1506
1507
1508 /**
1509  * nes_clean_cq
1510  */
1511 static void nes_clean_cq(struct nes_qp *nesqp, struct nes_cq *nescq)
1512 {
1513         u32 cq_head;
1514         u32 lo;
1515         u32 hi;
1516         u64 u64temp;
1517         unsigned long flags = 0;
1518
1519         spin_lock_irqsave(&nescq->lock, flags);
1520
1521         cq_head = nescq->hw_cq.cq_head;
1522         while (le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_VALID) {
1523                 rmb();
1524                 lo = le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
1525                 hi = le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX]);
1526                 u64temp = (((u64)hi) << 32) | ((u64)lo);
1527                 u64temp &= ~(NES_SW_CONTEXT_ALIGN-1);
1528                 if (u64temp == (u64)(unsigned long)nesqp) {
1529                         /* Zero the context value so cqe will be ignored */
1530                         nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX] = 0;
1531                         nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX] = 0;
1532                 }
1533
1534                 if (++cq_head >= nescq->hw_cq.cq_size)
1535                         cq_head = 0;
1536         }
1537
1538         spin_unlock_irqrestore(&nescq->lock, flags);
1539 }
1540
1541
1542 /**
1543  * nes_destroy_qp
1544  */
1545 static int nes_destroy_qp(struct ib_qp *ibqp)
1546 {
1547         struct nes_qp *nesqp = to_nesqp(ibqp);
1548         struct nes_ucontext *nes_ucontext;
1549         struct ib_qp_attr attr;
1550         struct iw_cm_id *cm_id;
1551         struct iw_cm_event cm_event;
1552         int ret;
1553
1554         atomic_inc(&sw_qps_destroyed);
1555         nesqp->destroyed = 1;
1556
1557         /* Blow away the connection if it exists. */
1558         if (nesqp->ibqp_state >= IB_QPS_INIT && nesqp->ibqp_state <= IB_QPS_RTS) {
1559                 /* if (nesqp->ibqp_state == IB_QPS_RTS) { */
1560                 attr.qp_state = IB_QPS_ERR;
1561                 nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL);
1562         }
1563
1564         if (((nesqp->ibqp_state == IB_QPS_INIT) ||
1565                         (nesqp->ibqp_state == IB_QPS_RTR)) && (nesqp->cm_id)) {
1566                 cm_id = nesqp->cm_id;
1567                 cm_event.event = IW_CM_EVENT_CONNECT_REPLY;
1568                 cm_event.status = IW_CM_EVENT_STATUS_TIMEOUT;
1569                 cm_event.local_addr = cm_id->local_addr;
1570                 cm_event.remote_addr = cm_id->remote_addr;
1571                 cm_event.private_data = NULL;
1572                 cm_event.private_data_len = 0;
1573
1574                 nes_debug(NES_DBG_QP, "Generating a CM Timeout Event for "
1575                                 "QP%u. cm_id = %p, refcount = %u. \n",
1576                                 nesqp->hwqp.qp_id, cm_id, atomic_read(&nesqp->refcount));
1577
1578                 cm_id->rem_ref(cm_id);
1579                 ret = cm_id->event_handler(cm_id, &cm_event);
1580                 if (ret)
1581                         nes_debug(NES_DBG_QP, "OFA CM event_handler returned, ret=%d\n", ret);
1582         }
1583
1584         if (nesqp->user_mode) {
1585                 if ((ibqp->uobject)&&(ibqp->uobject->context)) {
1586                         nes_ucontext = to_nesucontext(ibqp->uobject->context);
1587                         clear_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1588                         nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = NULL;
1589                         if (nes_ucontext->first_free_wq > nesqp->mmap_sq_db_index) {
1590                                 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index;
1591                         }
1592                 }
1593                 if (nesqp->pbl_pbase)
1594                         kunmap(nesqp->page);
1595         } else {
1596                 /* Clean any pending completions from the cq(s) */
1597                 if (nesqp->nesscq)
1598                         nes_clean_cq(nesqp, nesqp->nesscq);
1599
1600                 if ((nesqp->nesrcq) && (nesqp->nesrcq != nesqp->nesscq))
1601                         nes_clean_cq(nesqp, nesqp->nesrcq);
1602         }
1603
1604         nes_rem_ref(&nesqp->ibqp);
1605         return 0;
1606 }
1607
1608
1609 /**
1610  * nes_create_cq
1611  */
1612 static struct ib_cq *nes_create_cq(struct ib_device *ibdev, int entries,
1613                 int comp_vector,
1614                 struct ib_ucontext *context, struct ib_udata *udata)
1615 {
1616         u64 u64temp;
1617         struct nes_vnic *nesvnic = to_nesvnic(ibdev);
1618         struct nes_device *nesdev = nesvnic->nesdev;
1619         struct nes_adapter *nesadapter = nesdev->nesadapter;
1620         struct nes_cq *nescq;
1621         struct nes_ucontext *nes_ucontext = NULL;
1622         struct nes_cqp_request *cqp_request;
1623         void *mem = NULL;
1624         struct nes_hw_cqp_wqe *cqp_wqe;
1625         struct nes_pbl *nespbl = NULL;
1626         struct nes_create_cq_req req;
1627         struct nes_create_cq_resp resp;
1628         u32 cq_num = 0;
1629         u32 opcode = 0;
1630         u32 pbl_entries = 1;
1631         int err;
1632         unsigned long flags;
1633         int ret;
1634
1635         err = nes_alloc_resource(nesadapter, nesadapter->allocated_cqs,
1636                         nesadapter->max_cq, &cq_num, &nesadapter->next_cq);
1637         if (err) {
1638                 return ERR_PTR(err);
1639         }
1640
1641         nescq = kzalloc(sizeof(struct nes_cq), GFP_KERNEL);
1642         if (!nescq) {
1643                 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1644                 nes_debug(NES_DBG_CQ, "Unable to allocate nes_cq struct\n");
1645                 return ERR_PTR(-ENOMEM);
1646         }
1647
1648         nescq->hw_cq.cq_size = max(entries + 1, 5);
1649         nescq->hw_cq.cq_number = cq_num;
1650         nescq->ibcq.cqe = nescq->hw_cq.cq_size - 1;
1651
1652
1653         if (context) {
1654                 nes_ucontext = to_nesucontext(context);
1655                 if (ib_copy_from_udata(&req, udata, sizeof (struct nes_create_cq_req))) {
1656                         nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1657                         kfree(nescq);
1658                         return ERR_PTR(-EFAULT);
1659                 }
1660                 nesvnic->mcrq_ucontext = nes_ucontext;
1661                 nes_ucontext->mcrqf = req.mcrqf;
1662                 if (nes_ucontext->mcrqf) {
1663                         if (nes_ucontext->mcrqf & 0x80000000)
1664                                 nescq->hw_cq.cq_number = nesvnic->nic.qp_id + 28 + 2 * ((nes_ucontext->mcrqf & 0xf) - 1);
1665                         else if (nes_ucontext->mcrqf & 0x40000000)
1666                                 nescq->hw_cq.cq_number = nes_ucontext->mcrqf & 0xffff;
1667                         else
1668                                 nescq->hw_cq.cq_number = nesvnic->mcrq_qp_id + nes_ucontext->mcrqf-1;
1669                         nescq->mcrqf = nes_ucontext->mcrqf;
1670                         nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1671                 }
1672                 nes_debug(NES_DBG_CQ, "CQ Virtual Address = %08lX, size = %u.\n",
1673                                 (unsigned long)req.user_cq_buffer, entries);
1674                 err = 1;
1675                 list_for_each_entry(nespbl, &nes_ucontext->cq_reg_mem_list, list) {
1676                         if (nespbl->user_base == (unsigned long )req.user_cq_buffer) {
1677                                 list_del(&nespbl->list);
1678                                 err = 0;
1679                                 nes_debug(NES_DBG_CQ, "Found PBL for virtual CQ. nespbl=%p.\n",
1680                                                 nespbl);
1681                                 break;
1682                         }
1683                 }
1684                 if (err) {
1685                         nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1686                         kfree(nescq);
1687                         return ERR_PTR(-EFAULT);
1688                 }
1689
1690                 pbl_entries = nespbl->pbl_size >> 3;
1691                 nescq->cq_mem_size = 0;
1692         } else {
1693                 nescq->cq_mem_size = nescq->hw_cq.cq_size * sizeof(struct nes_hw_cqe);
1694                 nes_debug(NES_DBG_CQ, "Attempting to allocate pci memory (%u entries, %u bytes) for CQ%u.\n",
1695                                 entries, nescq->cq_mem_size, nescq->hw_cq.cq_number);
1696
1697                 /* allocate the physical buffer space */
1698                 mem = pci_alloc_consistent(nesdev->pcidev, nescq->cq_mem_size,
1699                                 &nescq->hw_cq.cq_pbase);
1700                 if (!mem) {
1701                         printk(KERN_ERR PFX "Unable to allocate pci memory for cq\n");
1702                         nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1703                         kfree(nescq);
1704                         return ERR_PTR(-ENOMEM);
1705                 }
1706
1707                 memset(mem, 0, nescq->cq_mem_size);
1708                 nescq->hw_cq.cq_vbase = mem;
1709                 nescq->hw_cq.cq_head = 0;
1710                 nes_debug(NES_DBG_CQ, "CQ%u virtual address @ %p, phys = 0x%08X\n",
1711                                 nescq->hw_cq.cq_number, nescq->hw_cq.cq_vbase,
1712                                 (u32)nescq->hw_cq.cq_pbase);
1713         }
1714
1715         nescq->hw_cq.ce_handler = nes_iwarp_ce_handler;
1716         spin_lock_init(&nescq->lock);
1717
1718         /* send CreateCQ request to CQP */
1719         cqp_request = nes_get_cqp_request(nesdev);
1720         if (cqp_request == NULL) {
1721                 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1722                 if (!context)
1723                         pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1724                                         nescq->hw_cq.cq_pbase);
1725                 else {
1726                         pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1727                                             nespbl->pbl_vbase, nespbl->pbl_pbase);
1728                         kfree(nespbl);
1729                 }
1730
1731                 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1732                 kfree(nescq);
1733                 return ERR_PTR(-ENOMEM);
1734         }
1735         cqp_request->waiting = 1;
1736         cqp_wqe = &cqp_request->cqp_wqe;
1737
1738         opcode = NES_CQP_CREATE_CQ | NES_CQP_CQ_CEQ_VALID |
1739                         NES_CQP_CQ_CHK_OVERFLOW |
1740                         NES_CQP_CQ_CEQE_MASK | ((u32)nescq->hw_cq.cq_size << 16);
1741
1742         spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1743
1744         if (pbl_entries != 1) {
1745                 if (pbl_entries > 32) {
1746                         /* use 4k pbl */
1747                         nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 4k PBL\n", pbl_entries);
1748                         if (nesadapter->free_4kpbl == 0) {
1749                                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1750                                 nes_free_cqp_request(nesdev, cqp_request);
1751                                 if (!context)
1752                                         pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1753                                                         nescq->hw_cq.cq_pbase);
1754                                 else {
1755                                         pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1756                                                             nespbl->pbl_vbase, nespbl->pbl_pbase);
1757                                         kfree(nespbl);
1758                                 }
1759                                 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1760                                 kfree(nescq);
1761                                 return ERR_PTR(-ENOMEM);
1762                         } else {
1763                                 opcode |= (NES_CQP_CQ_VIRT | NES_CQP_CQ_4KB_CHUNK);
1764                                 nescq->virtual_cq = 2;
1765                                 nesadapter->free_4kpbl--;
1766                         }
1767                 } else {
1768                         /* use 256 byte pbl */
1769                         nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 256 byte PBL\n", pbl_entries);
1770                         if (nesadapter->free_256pbl == 0) {
1771                                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1772                                 nes_free_cqp_request(nesdev, cqp_request);
1773                                 if (!context)
1774                                         pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1775                                                         nescq->hw_cq.cq_pbase);
1776                                 else {
1777                                         pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1778                                                             nespbl->pbl_vbase, nespbl->pbl_pbase);
1779                                         kfree(nespbl);
1780                                 }
1781                                 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1782                                 kfree(nescq);
1783                                 return ERR_PTR(-ENOMEM);
1784                         } else {
1785                                 opcode |= NES_CQP_CQ_VIRT;
1786                                 nescq->virtual_cq = 1;
1787                                 nesadapter->free_256pbl--;
1788                         }
1789                 }
1790         }
1791
1792         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1793
1794         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1795         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1796         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1797                         (nescq->hw_cq.cq_number | ((u32)nesdev->ceq_index << 16)));
1798
1799         if (context) {
1800                 if (pbl_entries != 1)
1801                         u64temp = (u64)nespbl->pbl_pbase;
1802                 else
1803                         u64temp = le64_to_cpu(nespbl->pbl_vbase[0]);
1804                 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX,
1805                                 nes_ucontext->mmap_db_index[0]);
1806         } else {
1807                 u64temp = (u64)nescq->hw_cq.cq_pbase;
1808                 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX] = 0;
1809         }
1810         set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_PBL_LOW_IDX, u64temp);
1811         cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] = 0;
1812         u64temp = (u64)(unsigned long)&nescq->hw_cq;
1813         cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_LOW_IDX] =
1814                         cpu_to_le32((u32)(u64temp >> 1));
1815         cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] =
1816                         cpu_to_le32(((u32)((u64temp) >> 33)) & 0x7FFFFFFF);
1817
1818         atomic_set(&cqp_request->refcount, 2);
1819         nes_post_cqp_request(nesdev, cqp_request);
1820
1821         /* Wait for CQP */
1822         nes_debug(NES_DBG_CQ, "Waiting for create iWARP CQ%u to complete.\n",
1823                         nescq->hw_cq.cq_number);
1824         ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1825                         NES_EVENT_TIMEOUT * 2);
1826         nes_debug(NES_DBG_CQ, "Create iWARP CQ%u completed, wait_event_timeout ret = %d.\n",
1827                         nescq->hw_cq.cq_number, ret);
1828         if ((!ret) || (cqp_request->major_code)) {
1829                 nes_put_cqp_request(nesdev, cqp_request);
1830                 if (!context)
1831                         pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1832                                         nescq->hw_cq.cq_pbase);
1833                 else {
1834                         pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1835                                             nespbl->pbl_vbase, nespbl->pbl_pbase);
1836                         kfree(nespbl);
1837                 }
1838                 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1839                 kfree(nescq);
1840                 return ERR_PTR(-EIO);
1841         }
1842         nes_put_cqp_request(nesdev, cqp_request);
1843
1844         if (context) {
1845                 /* free the nespbl */
1846                 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1847                                 nespbl->pbl_pbase);
1848                 kfree(nespbl);
1849                 resp.cq_id = nescq->hw_cq.cq_number;
1850                 resp.cq_size = nescq->hw_cq.cq_size;
1851                 resp.mmap_db_index = 0;
1852                 if (ib_copy_to_udata(udata, &resp, sizeof resp)) {
1853                         nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1854                         kfree(nescq);
1855                         return ERR_PTR(-EFAULT);
1856                 }
1857         }
1858
1859         return &nescq->ibcq;
1860 }
1861
1862
1863 /**
1864  * nes_destroy_cq
1865  */
1866 static int nes_destroy_cq(struct ib_cq *ib_cq)
1867 {
1868         struct nes_cq *nescq;
1869         struct nes_device *nesdev;
1870         struct nes_vnic *nesvnic;
1871         struct nes_adapter *nesadapter;
1872         struct nes_hw_cqp_wqe *cqp_wqe;
1873         struct nes_cqp_request *cqp_request;
1874         unsigned long flags;
1875         u32 opcode = 0;
1876         int ret;
1877
1878         if (ib_cq == NULL)
1879                 return 0;
1880
1881         nescq = to_nescq(ib_cq);
1882         nesvnic = to_nesvnic(ib_cq->device);
1883         nesdev = nesvnic->nesdev;
1884         nesadapter = nesdev->nesadapter;
1885
1886         nes_debug(NES_DBG_CQ, "Destroy CQ%u\n", nescq->hw_cq.cq_number);
1887
1888         /* Send DestroyCQ request to CQP */
1889         cqp_request = nes_get_cqp_request(nesdev);
1890         if (cqp_request == NULL) {
1891                 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1892                 return -ENOMEM;
1893         }
1894         cqp_request->waiting = 1;
1895         cqp_wqe = &cqp_request->cqp_wqe;
1896         opcode = NES_CQP_DESTROY_CQ | (nescq->hw_cq.cq_size << 16);
1897         spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1898         if (nescq->virtual_cq == 1) {
1899                 nesadapter->free_256pbl++;
1900                 if (nesadapter->free_256pbl > nesadapter->max_256pbl) {
1901                         printk(KERN_ERR PFX "%s: free 256B PBLs(%u) has exceeded the max(%u)\n",
1902                                         __func__, nesadapter->free_256pbl, nesadapter->max_256pbl);
1903                 }
1904         } else if (nescq->virtual_cq == 2) {
1905                 nesadapter->free_4kpbl++;
1906                 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl) {
1907                         printk(KERN_ERR PFX "%s: free 4K PBLs(%u) has exceeded the max(%u)\n",
1908                                         __func__, nesadapter->free_4kpbl, nesadapter->max_4kpbl);
1909                 }
1910                 opcode |= NES_CQP_CQ_4KB_CHUNK;
1911         }
1912
1913         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1914
1915         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1916         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1917         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1918                 (nescq->hw_cq.cq_number | ((u32)PCI_FUNC(nesdev->pcidev->devfn) << 16)));
1919         if (!nescq->mcrqf)
1920                 nes_free_resource(nesadapter, nesadapter->allocated_cqs, nescq->hw_cq.cq_number);
1921
1922         atomic_set(&cqp_request->refcount, 2);
1923         nes_post_cqp_request(nesdev, cqp_request);
1924
1925         /* Wait for CQP */
1926         nes_debug(NES_DBG_CQ, "Waiting for destroy iWARP CQ%u to complete.\n",
1927                         nescq->hw_cq.cq_number);
1928         ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1929                         NES_EVENT_TIMEOUT);
1930         nes_debug(NES_DBG_CQ, "Destroy iWARP CQ%u completed, wait_event_timeout ret = %u,"
1931                         " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1932                         nescq->hw_cq.cq_number, ret, cqp_request->major_code,
1933                         cqp_request->minor_code);
1934         if (!ret) {
1935                 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy timeout expired\n",
1936                                         nescq->hw_cq.cq_number);
1937                 ret = -ETIME;
1938         } else if (cqp_request->major_code) {
1939                 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy failed\n",
1940                                         nescq->hw_cq.cq_number);
1941                 ret = -EIO;
1942         } else {
1943                 ret = 0;
1944         }
1945         nes_put_cqp_request(nesdev, cqp_request);
1946
1947         if (nescq->cq_mem_size)
1948                 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size,
1949                                     nescq->hw_cq.cq_vbase, nescq->hw_cq.cq_pbase);
1950         kfree(nescq);
1951
1952         return ret;
1953 }
1954
1955 /**
1956  * root_256
1957  */
1958 static u32 root_256(struct nes_device *nesdev,
1959                     struct nes_root_vpbl *root_vpbl,
1960                     struct nes_root_vpbl *new_root,
1961                     u16 pbl_count_4k)
1962 {
1963         u64 leaf_pbl;
1964         int i, j, k;
1965
1966         if (pbl_count_4k == 1) {
1967                 new_root->pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
1968                                                 512, &new_root->pbl_pbase);
1969
1970                 if (new_root->pbl_vbase == NULL)
1971                         return 0;
1972
1973                 leaf_pbl = (u64)root_vpbl->pbl_pbase;
1974                 for (i = 0; i < 16; i++) {
1975                         new_root->pbl_vbase[i].pa_low =
1976                                 cpu_to_le32((u32)leaf_pbl);
1977                         new_root->pbl_vbase[i].pa_high =
1978                                 cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
1979                         leaf_pbl += 256;
1980                 }
1981         } else {
1982                 for (i = 3; i >= 0; i--) {
1983                         j = i * 16;
1984                         root_vpbl->pbl_vbase[j] = root_vpbl->pbl_vbase[i];
1985                         leaf_pbl = le32_to_cpu(root_vpbl->pbl_vbase[j].pa_low) +
1986                             (((u64)le32_to_cpu(root_vpbl->pbl_vbase[j].pa_high))
1987                                 << 32);
1988                         for (k = 1; k < 16; k++) {
1989                                 leaf_pbl += 256;
1990                                 root_vpbl->pbl_vbase[j + k].pa_low =
1991                                                 cpu_to_le32((u32)leaf_pbl);
1992                                 root_vpbl->pbl_vbase[j + k].pa_high =
1993                                     cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
1994                         }
1995                 }
1996         }
1997
1998         return 1;
1999 }
2000
2001
2002 /**
2003  * nes_reg_mr
2004  */
2005 static int nes_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd,
2006                 u32 stag, u64 region_length, struct nes_root_vpbl *root_vpbl,
2007                 dma_addr_t single_buffer, u16 pbl_count_4k,
2008                 u16 residual_page_count_4k, int acc, u64 *iova_start,
2009                 u16 *actual_pbl_cnt, u8 *used_4k_pbls)
2010 {
2011         struct nes_hw_cqp_wqe *cqp_wqe;
2012         struct nes_cqp_request *cqp_request;
2013         unsigned long flags;
2014         int ret;
2015         struct nes_adapter *nesadapter = nesdev->nesadapter;
2016         uint pg_cnt = 0;
2017         u16 pbl_count_256 = 0;
2018         u16 pbl_count = 0;
2019         u8  use_256_pbls = 0;
2020         u8  use_4k_pbls = 0;
2021         u16 use_two_level = (pbl_count_4k > 1) ? 1 : 0;
2022         struct nes_root_vpbl new_root = {0, 0, 0};
2023         u32 opcode = 0;
2024         u16 major_code;
2025
2026         /* Register the region with the adapter */
2027         cqp_request = nes_get_cqp_request(nesdev);
2028         if (cqp_request == NULL) {
2029                 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
2030                 return -ENOMEM;
2031         }
2032         cqp_request->waiting = 1;
2033         cqp_wqe = &cqp_request->cqp_wqe;
2034
2035         if (pbl_count_4k) {
2036                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2037
2038                 pg_cnt = ((pbl_count_4k - 1) * 512) + residual_page_count_4k;
2039                 pbl_count_256 = (pg_cnt + 31) / 32;
2040                 if (pg_cnt <= 32) {
2041                         if (pbl_count_256 <= nesadapter->free_256pbl)
2042                                 use_256_pbls = 1;
2043                         else if (pbl_count_4k <= nesadapter->free_4kpbl)
2044                                 use_4k_pbls = 1;
2045                 } else if (pg_cnt <= 2048) {
2046                         if (((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) &&
2047                             (nesadapter->free_4kpbl > (nesadapter->max_4kpbl >> 1))) {
2048                                 use_4k_pbls = 1;
2049                         } else if ((pbl_count_256 + 1) <= nesadapter->free_256pbl) {
2050                                 use_256_pbls = 1;
2051                                 use_two_level = 1;
2052                         } else if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
2053                                 use_4k_pbls = 1;
2054                         }
2055                 } else {
2056                         if ((pbl_count_4k + 1) <= nesadapter->free_4kpbl)
2057                                 use_4k_pbls = 1;
2058                 }
2059
2060                 if (use_256_pbls) {
2061                         pbl_count = pbl_count_256;
2062                         nesadapter->free_256pbl -= pbl_count + use_two_level;
2063                 } else if (use_4k_pbls) {
2064                         pbl_count =  pbl_count_4k;
2065                         nesadapter->free_4kpbl -= pbl_count + use_two_level;
2066                 } else {
2067                         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2068                         nes_debug(NES_DBG_MR, "Out of Pbls\n");
2069                         nes_free_cqp_request(nesdev, cqp_request);
2070                         return -ENOMEM;
2071                 }
2072
2073                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2074         }
2075
2076         if (use_256_pbls && use_two_level) {
2077                 if (root_256(nesdev, root_vpbl, &new_root, pbl_count_4k) == 1) {
2078                         if (new_root.pbl_pbase != 0)
2079                                 root_vpbl = &new_root;
2080                 } else {
2081                         spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2082                         nesadapter->free_256pbl += pbl_count_256 + use_two_level;
2083                         use_256_pbls = 0;
2084
2085                         if (pbl_count_4k == 1)
2086                                 use_two_level = 0;
2087                         pbl_count = pbl_count_4k;
2088
2089                         if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
2090                                 nesadapter->free_4kpbl -= pbl_count + use_two_level;
2091                                 use_4k_pbls = 1;
2092                         }
2093                         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2094
2095                         if (use_4k_pbls == 0)
2096                                 return -ENOMEM;
2097                 }
2098         }
2099
2100         opcode = NES_CQP_REGISTER_STAG | NES_CQP_STAG_RIGHTS_LOCAL_READ |
2101                                         NES_CQP_STAG_VA_TO | NES_CQP_STAG_MR;
2102         if (acc & IB_ACCESS_LOCAL_WRITE)
2103                 opcode |= NES_CQP_STAG_RIGHTS_LOCAL_WRITE;
2104         if (acc & IB_ACCESS_REMOTE_WRITE)
2105                 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_REM_ACC_EN;
2106         if (acc & IB_ACCESS_REMOTE_READ)
2107                 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_READ | NES_CQP_STAG_REM_ACC_EN;
2108         if (acc & IB_ACCESS_MW_BIND)
2109                 opcode |= NES_CQP_STAG_RIGHTS_WINDOW_BIND | NES_CQP_STAG_REM_ACC_EN;
2110
2111         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2112         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
2113         set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, *iova_start);
2114         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, region_length);
2115
2116         cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] =
2117                         cpu_to_le32((u32)(region_length >> 8) & 0xff000000);
2118         cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |=
2119                         cpu_to_le32(nespd->pd_id & 0x00007fff);
2120         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
2121
2122         if (pbl_count == 0) {
2123                 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, single_buffer);
2124         } else {
2125                 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, root_vpbl->pbl_pbase);
2126                 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, pbl_count);
2127                 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX, (pg_cnt * 8));
2128
2129                 if (use_4k_pbls)
2130                         cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE);
2131         }
2132         barrier();
2133
2134         atomic_set(&cqp_request->refcount, 2);
2135         nes_post_cqp_request(nesdev, cqp_request);
2136
2137         /* Wait for CQP */
2138         ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
2139                         NES_EVENT_TIMEOUT);
2140         nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
2141                         " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2142                         stag, ret, cqp_request->major_code, cqp_request->minor_code);
2143         major_code = cqp_request->major_code;
2144         nes_put_cqp_request(nesdev, cqp_request);
2145
2146         if ((!ret || major_code) && pbl_count != 0) {
2147                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2148                 if (use_256_pbls)
2149                         nesadapter->free_256pbl += pbl_count + use_two_level;
2150                 else if (use_4k_pbls)
2151                         nesadapter->free_4kpbl += pbl_count + use_two_level;
2152                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2153         }
2154         if (new_root.pbl_pbase)
2155                 pci_free_consistent(nesdev->pcidev, 512, new_root.pbl_vbase,
2156                                     new_root.pbl_pbase);
2157
2158         if (!ret)
2159                 return -ETIME;
2160         else if (major_code)
2161                 return -EIO;
2162
2163         *actual_pbl_cnt = pbl_count + use_two_level;
2164         *used_4k_pbls = use_4k_pbls;
2165         return 0;
2166 }
2167
2168
2169 /**
2170  * nes_reg_phys_mr
2171  */
2172 static struct ib_mr *nes_reg_phys_mr(struct ib_pd *ib_pd,
2173                 struct ib_phys_buf *buffer_list, int num_phys_buf, int acc,
2174                 u64 * iova_start)
2175 {
2176         u64 region_length;
2177         struct nes_pd *nespd = to_nespd(ib_pd);
2178         struct nes_vnic *nesvnic = to_nesvnic(ib_pd->device);
2179         struct nes_device *nesdev = nesvnic->nesdev;
2180         struct nes_adapter *nesadapter = nesdev->nesadapter;
2181         struct nes_mr *nesmr;
2182         struct ib_mr *ibmr;
2183         struct nes_vpbl vpbl;
2184         struct nes_root_vpbl root_vpbl;
2185         u32 stag;
2186         u32 i;
2187         unsigned long mask;
2188         u32 stag_index = 0;
2189         u32 next_stag_index = 0;
2190         u32 driver_key = 0;
2191         u32 root_pbl_index = 0;
2192         u32 cur_pbl_index = 0;
2193         int err = 0, pbl_depth = 0;
2194         int ret = 0;
2195         u16 pbl_count = 0;
2196         u8 single_page = 1;
2197         u8 stag_key = 0;
2198
2199         pbl_depth = 0;
2200         region_length = 0;
2201         vpbl.pbl_vbase = NULL;
2202         root_vpbl.pbl_vbase = NULL;
2203         root_vpbl.pbl_pbase = 0;
2204
2205         get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2206         stag_key = (u8)next_stag_index;
2207
2208         driver_key = 0;
2209
2210         next_stag_index >>= 8;
2211         next_stag_index %= nesadapter->max_mr;
2212         if (num_phys_buf > (1024*512)) {
2213                 return ERR_PTR(-E2BIG);
2214         }
2215
2216         if ((buffer_list[0].addr ^ *iova_start) & ~PAGE_MASK)
2217                 return ERR_PTR(-EINVAL);
2218
2219         err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs, nesadapter->max_mr,
2220                         &stag_index, &next_stag_index);
2221         if (err) {
2222                 return ERR_PTR(err);
2223         }
2224
2225         nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2226         if (!nesmr) {
2227                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2228                 return ERR_PTR(-ENOMEM);
2229         }
2230
2231         for (i = 0; i < num_phys_buf; i++) {
2232
2233                 if ((i & 0x01FF) == 0) {
2234                         if (root_pbl_index == 1) {
2235                                 /* Allocate the root PBL */
2236                                 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 8192,
2237                                                 &root_vpbl.pbl_pbase);
2238                                 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2239                                                 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2240                                 if (!root_vpbl.pbl_vbase) {
2241                                         pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2242                                                         vpbl.pbl_pbase);
2243                                         nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2244                                         kfree(nesmr);
2245                                         return ERR_PTR(-ENOMEM);
2246                                 }
2247                                 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024, GFP_KERNEL);
2248                                 if (!root_vpbl.leaf_vpbl) {
2249                                         pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2250                                                         root_vpbl.pbl_pbase);
2251                                         pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2252                                                         vpbl.pbl_pbase);
2253                                         nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2254                                         kfree(nesmr);
2255                                         return ERR_PTR(-ENOMEM);
2256                                 }
2257                                 root_vpbl.pbl_vbase[0].pa_low = cpu_to_le32((u32)vpbl.pbl_pbase);
2258                                 root_vpbl.pbl_vbase[0].pa_high =
2259                                                 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2260                                 root_vpbl.leaf_vpbl[0] = vpbl;
2261                         }
2262                         /* Allocate a 4K buffer for the PBL */
2263                         vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2264                                         &vpbl.pbl_pbase);
2265                         nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%016lX\n",
2266                                         vpbl.pbl_vbase, (unsigned long)vpbl.pbl_pbase);
2267                         if (!vpbl.pbl_vbase) {
2268                                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2269                                 ibmr = ERR_PTR(-ENOMEM);
2270                                 kfree(nesmr);
2271                                 goto reg_phys_err;
2272                         }
2273                         /* Fill in the root table */
2274                         if (1 <= root_pbl_index) {
2275                                 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2276                                                 cpu_to_le32((u32)vpbl.pbl_pbase);
2277                                 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2278                                                 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2279                                 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2280                         }
2281                         root_pbl_index++;
2282                         cur_pbl_index = 0;
2283                 }
2284
2285                 mask = !buffer_list[i].size;
2286                 if (i != 0)
2287                         mask |= buffer_list[i].addr;
2288                 if (i != num_phys_buf - 1)
2289                         mask |= buffer_list[i].addr + buffer_list[i].size;
2290
2291                 if (mask & ~PAGE_MASK) {
2292                         nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2293                         nes_debug(NES_DBG_MR, "Invalid buffer addr or size\n");
2294                         ibmr = ERR_PTR(-EINVAL);
2295                         kfree(nesmr);
2296                         goto reg_phys_err;
2297                 }
2298
2299                 region_length += buffer_list[i].size;
2300                 if ((i != 0) && (single_page)) {
2301                         if ((buffer_list[i-1].addr+PAGE_SIZE) != buffer_list[i].addr)
2302                                 single_page = 0;
2303                 }
2304                 vpbl.pbl_vbase[cur_pbl_index].pa_low = cpu_to_le32((u32)buffer_list[i].addr & PAGE_MASK);
2305                 vpbl.pbl_vbase[cur_pbl_index++].pa_high =
2306                                 cpu_to_le32((u32)((((u64)buffer_list[i].addr) >> 32)));
2307         }
2308
2309         stag = stag_index << 8;
2310         stag |= driver_key;
2311         stag += (u32)stag_key;
2312
2313         nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%016lX,"
2314                         " length = 0x%016lX, index = 0x%08X\n",
2315                         stag, (unsigned long)*iova_start, (unsigned long)region_length, stag_index);
2316
2317         /* Make the leaf PBL the root if only one PBL */
2318         if (root_pbl_index == 1) {
2319                 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2320         }
2321
2322         if (single_page) {
2323                 pbl_count = 0;
2324         } else {
2325                 pbl_count = root_pbl_index;
2326         }
2327         ret = nes_reg_mr(nesdev, nespd, stag, region_length, &root_vpbl,
2328                         buffer_list[0].addr, pbl_count, (u16)cur_pbl_index, acc, iova_start,
2329                         &nesmr->pbls_used, &nesmr->pbl_4k);
2330
2331         if (ret == 0) {
2332                 nesmr->ibmr.rkey = stag;
2333                 nesmr->ibmr.lkey = stag;
2334                 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2335                 ibmr = &nesmr->ibmr;
2336         } else {
2337                 kfree(nesmr);
2338                 ibmr = ERR_PTR(-ENOMEM);
2339         }
2340
2341         reg_phys_err:
2342         /* free the resources */
2343         if (root_pbl_index == 1) {
2344                 /* single PBL case */
2345                 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, vpbl.pbl_pbase);
2346         } else {
2347                 for (i=0; i<root_pbl_index; i++) {
2348                         pci_free_consistent(nesdev->pcidev, 4096, root_vpbl.leaf_vpbl[i].pbl_vbase,
2349                                         root_vpbl.leaf_vpbl[i].pbl_pbase);
2350                 }
2351                 kfree(root_vpbl.leaf_vpbl);
2352                 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2353                                 root_vpbl.pbl_pbase);
2354         }
2355
2356         return ibmr;
2357 }
2358
2359
2360 /**
2361  * nes_get_dma_mr
2362  */
2363 static struct ib_mr *nes_get_dma_mr(struct ib_pd *pd, int acc)
2364 {
2365         struct ib_phys_buf bl;
2366         u64 kva = 0;
2367
2368         nes_debug(NES_DBG_MR, "\n");
2369
2370         bl.size = (u64)0xffffffffffULL;
2371         bl.addr = 0;
2372         return nes_reg_phys_mr(pd, &bl, 1, acc, &kva);
2373 }
2374
2375
2376 /**
2377  * nes_reg_user_mr
2378  */
2379 static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
2380                 u64 virt, int acc, struct ib_udata *udata)
2381 {
2382         u64 iova_start;
2383         __le64 *pbl;
2384         u64 region_length;
2385         dma_addr_t last_dma_addr = 0;
2386         dma_addr_t first_dma_addr = 0;
2387         struct nes_pd *nespd = to_nespd(pd);
2388         struct nes_vnic *nesvnic = to_nesvnic(pd->device);
2389         struct nes_device *nesdev = nesvnic->nesdev;
2390         struct nes_adapter *nesadapter = nesdev->nesadapter;
2391         struct ib_mr *ibmr = ERR_PTR(-EINVAL);
2392         struct ib_umem_chunk *chunk;
2393         struct nes_ucontext *nes_ucontext;
2394         struct nes_pbl *nespbl;
2395         struct nes_mr *nesmr;
2396         struct ib_umem *region;
2397         struct nes_mem_reg_req req;
2398         struct nes_vpbl vpbl;
2399         struct nes_root_vpbl root_vpbl;
2400         int nmap_index, page_index;
2401         int page_count = 0;
2402         int err, pbl_depth = 0;
2403         int chunk_pages;
2404         int ret;
2405         u32 stag;
2406         u32 stag_index = 0;
2407         u32 next_stag_index;
2408         u32 driver_key;
2409         u32 root_pbl_index = 0;
2410         u32 cur_pbl_index = 0;
2411         u32 skip_pages;
2412         u16 pbl_count;
2413         u8 single_page = 1;
2414         u8 stag_key;
2415
2416         region = ib_umem_get(pd->uobject->context, start, length, acc, 0);
2417         if (IS_ERR(region)) {
2418                 return (struct ib_mr *)region;
2419         }
2420
2421         nes_debug(NES_DBG_MR, "User base = 0x%lX, Virt base = 0x%lX, length = %u,"
2422                         " offset = %u, page size = %u.\n",
2423                         (unsigned long int)start, (unsigned long int)virt, (u32)length,
2424                         region->offset, region->page_size);
2425
2426         skip_pages = ((u32)region->offset) >> 12;
2427
2428         if (ib_copy_from_udata(&req, udata, sizeof(req)))
2429                 return ERR_PTR(-EFAULT);
2430         nes_debug(NES_DBG_MR, "Memory Registration type = %08X.\n", req.reg_type);
2431
2432         switch (req.reg_type) {
2433                 case IWNES_MEMREG_TYPE_MEM:
2434                         pbl_depth = 0;
2435                         region_length = 0;
2436                         vpbl.pbl_vbase = NULL;
2437                         root_vpbl.pbl_vbase = NULL;
2438                         root_vpbl.pbl_pbase = 0;
2439
2440                         get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2441                         stag_key = (u8)next_stag_index;
2442
2443                         driver_key = next_stag_index & 0x70000000;
2444
2445                         next_stag_index >>= 8;
2446                         next_stag_index %= nesadapter->max_mr;
2447
2448                         err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
2449                                         nesadapter->max_mr, &stag_index, &next_stag_index);
2450                         if (err) {
2451                                 ib_umem_release(region);
2452                                 return ERR_PTR(err);
2453                         }
2454
2455                         nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2456                         if (!nesmr) {
2457                                 ib_umem_release(region);
2458                                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2459                                 return ERR_PTR(-ENOMEM);
2460                         }
2461                         nesmr->region = region;
2462
2463                         list_for_each_entry(chunk, &region->chunk_list, list) {
2464                                 nes_debug(NES_DBG_MR, "Chunk: nents = %u, nmap = %u .\n",
2465                                                 chunk->nents, chunk->nmap);
2466                                 for (nmap_index = 0; nmap_index < chunk->nmap; ++nmap_index) {
2467                                         if (sg_dma_address(&chunk->page_list[nmap_index]) & ~PAGE_MASK) {
2468                                                 ib_umem_release(region);
2469                                                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2470                                                 nes_debug(NES_DBG_MR, "Unaligned Memory Buffer: 0x%x\n",
2471                                                                 (unsigned int) sg_dma_address(&chunk->page_list[nmap_index]));
2472                                                 ibmr = ERR_PTR(-EINVAL);
2473                                                 kfree(nesmr);
2474                                                 goto reg_user_mr_err;
2475                                         }
2476
2477                                         if (!sg_dma_len(&chunk->page_list[nmap_index])) {
2478                                                 ib_umem_release(region);
2479                                                 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2480                                                                 stag_index);
2481                                                 nes_debug(NES_DBG_MR, "Invalid Buffer Size\n");
2482                                                 ibmr = ERR_PTR(-EINVAL);
2483                                                 kfree(nesmr);
2484                                                 goto reg_user_mr_err;
2485                                         }
2486
2487                                         region_length += sg_dma_len(&chunk->page_list[nmap_index]);
2488                                         chunk_pages = sg_dma_len(&chunk->page_list[nmap_index]) >> 12;
2489                                         region_length -= skip_pages << 12;
2490                                         for (page_index=skip_pages; page_index < chunk_pages; page_index++) {
2491                                                 skip_pages = 0;
2492                                                 if ((page_count!=0)&&(page_count<<12)-(region->offset&(4096-1))>=region->length)
2493                                                         goto enough_pages;
2494                                                 if ((page_count&0x01FF) == 0) {
2495                                                         if (page_count >= 1024 * 512) {
2496                                                                 ib_umem_release(region);
2497                                                                 nes_free_resource(nesadapter,
2498                                                                                 nesadapter->allocated_mrs, stag_index);
2499                                                                 kfree(nesmr);
2500                                                                 ibmr = ERR_PTR(-E2BIG);
2501                                                                 goto reg_user_mr_err;
2502                                                         }
2503                                                         if (root_pbl_index == 1) {
2504                                                                 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
2505                                                                                 8192, &root_vpbl.pbl_pbase);
2506                                                                 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2507                                                                                 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2508                                                                 if (!root_vpbl.pbl_vbase) {
2509                                                                         ib_umem_release(region);
2510                                                                         pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2511                                                                                         vpbl.pbl_pbase);
2512                                                                         nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2513                                                                                         stag_index);
2514                                                                         kfree(nesmr);
2515                                                                         ibmr = ERR_PTR(-ENOMEM);
2516                                                                         goto reg_user_mr_err;
2517                                                                 }
2518                                                                 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024,
2519                                                                                 GFP_KERNEL);
2520                                                                 if (!root_vpbl.leaf_vpbl) {
2521                                                                         ib_umem_release(region);
2522                                                                         pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2523                                                                                         root_vpbl.pbl_pbase);
2524                                                                         pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2525                                                                                         vpbl.pbl_pbase);
2526                                                                         nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2527                                                                                         stag_index);
2528                                                                         kfree(nesmr);
2529                                                                         ibmr = ERR_PTR(-ENOMEM);
2530                                                                         goto reg_user_mr_err;
2531                                                                 }
2532                                                                 root_vpbl.pbl_vbase[0].pa_low =
2533                                                                                 cpu_to_le32((u32)vpbl.pbl_pbase);
2534                                                                 root_vpbl.pbl_vbase[0].pa_high =
2535                                                                                 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2536                                                                 root_vpbl.leaf_vpbl[0] = vpbl;
2537                                                         }
2538                                                         vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2539                                                                         &vpbl.pbl_pbase);
2540                                                         nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%08X\n",
2541                                                                         vpbl.pbl_vbase, (unsigned int)vpbl.pbl_pbase);
2542                                                         if (!vpbl.pbl_vbase) {
2543                                                                 ib_umem_release(region);
2544                                                                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2545                                                                 ibmr = ERR_PTR(-ENOMEM);
2546                                                                 kfree(nesmr);
2547                                                                 goto reg_user_mr_err;
2548                                                         }
2549                                                         if (1 <= root_pbl_index) {
2550                                                                 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2551                                                                                 cpu_to_le32((u32)vpbl.pbl_pbase);
2552                                                                 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2553                                                                                 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase)>>32)));
2554                                                                 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2555                                                         }
2556                                                         root_pbl_index++;
2557                                                         cur_pbl_index = 0;
2558                                                 }
2559                                                 if (single_page) {
2560                                                         if (page_count != 0) {
2561                                                                 if ((last_dma_addr+4096) !=
2562                                                                                 (sg_dma_address(&chunk->page_list[nmap_index])+
2563                                                                                 (page_index*4096)))
2564                                                                         single_page = 0;
2565                                                                 last_dma_addr = sg_dma_address(&chunk->page_list[nmap_index])+
2566                                                                                 (page_index*4096);
2567                                                         } else {
2568                                                                 first_dma_addr = sg_dma_address(&chunk->page_list[nmap_index])+
2569                                                                                 (page_index*4096);
2570                                                                 last_dma_addr = first_dma_addr;
2571                                                         }
2572                                                 }
2573
2574                                                 vpbl.pbl_vbase[cur_pbl_index].pa_low =
2575                                                                 cpu_to_le32((u32)(sg_dma_address(&chunk->page_list[nmap_index])+
2576                                                                 (page_index*4096)));
2577                                                 vpbl.pbl_vbase[cur_pbl_index].pa_high =
2578                                                                 cpu_to_le32((u32)((((u64)(sg_dma_address(&chunk->page_list[nmap_index])+
2579                                                                 (page_index*4096))) >> 32)));
2580                                                 cur_pbl_index++;
2581                                                 page_count++;
2582                                         }
2583                                 }
2584                         }
2585                         enough_pages:
2586                         nes_debug(NES_DBG_MR, "calculating stag, stag_index=0x%08x, driver_key=0x%08x,"
2587                                         " stag_key=0x%08x\n",
2588                                         stag_index, driver_key, stag_key);
2589                         stag = stag_index << 8;
2590                         stag |= driver_key;
2591                         stag += (u32)stag_key;
2592                         if (stag == 0) {
2593                                 stag = 1;
2594                         }
2595
2596                         iova_start = virt;
2597                         /* Make the leaf PBL the root if only one PBL */
2598                         if (root_pbl_index == 1) {
2599                                 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2600                         }
2601
2602                         if (single_page) {
2603                                 pbl_count = 0;
2604                         } else {
2605                                 pbl_count = root_pbl_index;
2606                                 first_dma_addr = 0;
2607                         }
2608                         nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%08X, length = 0x%08X,"
2609                                         " index = 0x%08X, region->length=0x%08llx, pbl_count = %u\n",
2610                                         stag, (unsigned int)iova_start,
2611                                         (unsigned int)region_length, stag_index,
2612                                         (unsigned long long)region->length, pbl_count);
2613                         ret = nes_reg_mr(nesdev, nespd, stag, region->length, &root_vpbl,
2614                                          first_dma_addr, pbl_count, (u16)cur_pbl_index, acc,
2615                                          &iova_start, &nesmr->pbls_used, &nesmr->pbl_4k);
2616
2617                         nes_debug(NES_DBG_MR, "ret=%d\n", ret);
2618
2619                         if (ret == 0) {
2620                                 nesmr->ibmr.rkey = stag;
2621                                 nesmr->ibmr.lkey = stag;
2622                                 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2623                                 ibmr = &nesmr->ibmr;
2624                         } else {
2625                                 ib_umem_release(region);
2626                                 kfree(nesmr);
2627                                 ibmr = ERR_PTR(-ENOMEM);
2628                         }
2629
2630                         reg_user_mr_err:
2631                         /* free the resources */
2632                         if (root_pbl_index == 1) {
2633                                 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2634                                                 vpbl.pbl_pbase);
2635                         } else {
2636                                 for (page_index=0; page_index<root_pbl_index; page_index++) {
2637                                         pci_free_consistent(nesdev->pcidev, 4096,
2638                                                         root_vpbl.leaf_vpbl[page_index].pbl_vbase,
2639                                                         root_vpbl.leaf_vpbl[page_index].pbl_pbase);
2640                                 }
2641                                 kfree(root_vpbl.leaf_vpbl);
2642                                 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2643                                                 root_vpbl.pbl_pbase);
2644                         }
2645
2646                         nes_debug(NES_DBG_MR, "Leaving, ibmr=%p", ibmr);
2647
2648                         return ibmr;
2649                 case IWNES_MEMREG_TYPE_QP:
2650                 case IWNES_MEMREG_TYPE_CQ:
2651                         nespbl = kzalloc(sizeof(*nespbl), GFP_KERNEL);
2652                         if (!nespbl) {
2653                                 nes_debug(NES_DBG_MR, "Unable to allocate PBL\n");
2654                                 ib_umem_release(region);
2655                                 return ERR_PTR(-ENOMEM);
2656                         }
2657                         nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2658                         if (!nesmr) {
2659                                 ib_umem_release(region);
2660                                 kfree(nespbl);
2661                                 nes_debug(NES_DBG_MR, "Unable to allocate nesmr\n");
2662                                 return ERR_PTR(-ENOMEM);
2663                         }
2664                         nesmr->region = region;
2665                         nes_ucontext = to_nesucontext(pd->uobject->context);
2666                         pbl_depth = region->length >> 12;
2667                         pbl_depth += (region->length & (4096-1)) ? 1 : 0;
2668                         nespbl->pbl_size = pbl_depth*sizeof(u64);
2669                         if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2670                                 nes_debug(NES_DBG_MR, "Attempting to allocate QP PBL memory");
2671                         } else {
2672                                 nes_debug(NES_DBG_MR, "Attempting to allocate CP PBL memory");
2673                         }
2674
2675                         nes_debug(NES_DBG_MR, " %u bytes, %u entries.\n",
2676                                         nespbl->pbl_size, pbl_depth);
2677                         pbl = pci_alloc_consistent(nesdev->pcidev, nespbl->pbl_size,
2678                                         &nespbl->pbl_pbase);
2679                         if (!pbl) {
2680                                 ib_umem_release(region);
2681                                 kfree(nesmr);
2682                                 kfree(nespbl);
2683                                 nes_debug(NES_DBG_MR, "Unable to allocate PBL memory\n");
2684                                 return ERR_PTR(-ENOMEM);
2685                         }
2686
2687                         nespbl->pbl_vbase = (u64 *)pbl;
2688                         nespbl->user_base = start;
2689                         nes_debug(NES_DBG_MR, "Allocated PBL memory, %u bytes, pbl_pbase=%lx,"
2690                                         " pbl_vbase=%p user_base=0x%lx\n",
2691                                   nespbl->pbl_size, (unsigned long) nespbl->pbl_pbase,
2692                                   (void *) nespbl->pbl_vbase, nespbl->user_base);
2693
2694                         list_for_each_entry(chunk, &region->chunk_list, list) {
2695                                 for (nmap_index = 0; nmap_index < chunk->nmap; ++nmap_index) {
2696                                         chunk_pages = sg_dma_len(&chunk->page_list[nmap_index]) >> 12;
2697                                         chunk_pages += (sg_dma_len(&chunk->page_list[nmap_index]) & (4096-1)) ? 1 : 0;
2698                                         nespbl->page = sg_page(&chunk->page_list[0]);
2699                                         for (page_index=0; page_index<chunk_pages; page_index++) {
2700                                                 ((__le32 *)pbl)[0] = cpu_to_le32((u32)
2701                                                                 (sg_dma_address(&chunk->page_list[nmap_index])+
2702                                                                 (page_index*4096)));
2703                                                 ((__le32 *)pbl)[1] = cpu_to_le32(((u64)
2704                                                                 (sg_dma_address(&chunk->page_list[nmap_index])+
2705                                                                 (page_index*4096)))>>32);
2706                                                 nes_debug(NES_DBG_MR, "pbl=%p, *pbl=0x%016llx, 0x%08x%08x\n", pbl,
2707                                                                 (unsigned long long)*pbl,
2708                                                                 le32_to_cpu(((__le32 *)pbl)[1]), le32_to_cpu(((__le32 *)pbl)[0]));
2709                                                 pbl++;
2710                                         }
2711                                 }
2712                         }
2713                         if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2714                                 list_add_tail(&nespbl->list, &nes_ucontext->qp_reg_mem_list);
2715                         } else {
2716                                 list_add_tail(&nespbl->list, &nes_ucontext->cq_reg_mem_list);
2717                         }
2718                         nesmr->ibmr.rkey = -1;
2719                         nesmr->ibmr.lkey = -1;
2720                         nesmr->mode = req.reg_type;
2721                         return &nesmr->ibmr;
2722         }
2723
2724         return ERR_PTR(-ENOSYS);
2725 }
2726
2727
2728 /**
2729  * nes_dereg_mr
2730  */
2731 static int nes_dereg_mr(struct ib_mr *ib_mr)
2732 {
2733         struct nes_mr *nesmr = to_nesmr(ib_mr);
2734         struct nes_vnic *nesvnic = to_nesvnic(ib_mr->device);
2735         struct nes_device *nesdev = nesvnic->nesdev;
2736         struct nes_adapter *nesadapter = nesdev->nesadapter;
2737         struct nes_hw_cqp_wqe *cqp_wqe;
2738         struct nes_cqp_request *cqp_request;
2739         unsigned long flags;
2740         int ret;
2741         u16 major_code;
2742         u16 minor_code;
2743
2744         if (nesmr->region) {
2745                 ib_umem_release(nesmr->region);
2746         }
2747         if (nesmr->mode != IWNES_MEMREG_TYPE_MEM) {
2748                 kfree(nesmr);
2749                 return 0;
2750         }
2751
2752         /* Deallocate the region with the adapter */
2753
2754         cqp_request = nes_get_cqp_request(nesdev);
2755         if (cqp_request == NULL) {
2756                 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
2757                 return -ENOMEM;
2758         }
2759         cqp_request->waiting = 1;
2760         cqp_wqe = &cqp_request->cqp_wqe;
2761
2762         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2763         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2764                         NES_CQP_DEALLOCATE_STAG | NES_CQP_STAG_VA_TO |
2765                         NES_CQP_STAG_DEALLOC_PBLS | NES_CQP_STAG_MR);
2766         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ib_mr->rkey);
2767
2768         atomic_set(&cqp_request->refcount, 2);
2769         nes_post_cqp_request(nesdev, cqp_request);
2770
2771         /* Wait for CQP */
2772         nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X completed\n", ib_mr->rkey);
2773         ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2774                         NES_EVENT_TIMEOUT);
2775         nes_debug(NES_DBG_MR, "Deallocate STag 0x%08X completed, wait_event_timeout ret = %u,"
2776                         " CQP Major:Minor codes = 0x%04X:0x%04X\n",
2777                         ib_mr->rkey, ret, cqp_request->major_code, cqp_request->minor_code);
2778
2779         major_code = cqp_request->major_code;
2780         minor_code = cqp_request->minor_code;
2781
2782         nes_put_cqp_request(nesdev, cqp_request);
2783
2784         if (!ret) {
2785                 nes_debug(NES_DBG_MR, "Timeout waiting to destroy STag,"
2786                                 " ib_mr=%p, rkey = 0x%08X\n",
2787                                 ib_mr, ib_mr->rkey);
2788                 return -ETIME;
2789         } else if (major_code) {
2790                 nes_debug(NES_DBG_MR, "Error (0x%04X:0x%04X) while attempting"
2791                                 " to destroy STag, ib_mr=%p, rkey = 0x%08X\n",
2792                                 major_code, minor_code, ib_mr, ib_mr->rkey);
2793                 return -EIO;
2794         }
2795
2796         if (nesmr->pbls_used != 0) {
2797                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2798                 if (nesmr->pbl_4k) {
2799                         nesadapter->free_4kpbl += nesmr->pbls_used;
2800                         if (nesadapter->free_4kpbl > nesadapter->max_4kpbl)
2801                                 printk(KERN_ERR PFX "free 4KB PBLs(%u) has "
2802                                         "exceeded the max(%u)\n",
2803                                         nesadapter->free_4kpbl,
2804                                         nesadapter->max_4kpbl);
2805                 } else {
2806                         nesadapter->free_256pbl += nesmr->pbls_used;
2807                         if (nesadapter->free_256pbl > nesadapter->max_256pbl)
2808                                 printk(KERN_ERR PFX "free 256B PBLs(%u) has "
2809                                         "exceeded the max(%u)\n",
2810                                         nesadapter->free_256pbl,
2811                                         nesadapter->max_256pbl);
2812                 }
2813                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2814         }
2815         nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2816                         (ib_mr->rkey & 0x0fffff00) >> 8);
2817
2818         kfree(nesmr);
2819
2820         return 0;
2821 }
2822
2823
2824 /**
2825  * show_rev
2826  */
2827 static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
2828                         char *buf)
2829 {
2830         struct nes_ib_device *nesibdev =
2831                         container_of(dev, struct nes_ib_device, ibdev.dev);
2832         struct nes_vnic *nesvnic = nesibdev->nesvnic;
2833
2834         nes_debug(NES_DBG_INIT, "\n");
2835         return sprintf(buf, "%x\n", nesvnic->nesdev->nesadapter->hw_rev);
2836 }
2837
2838
2839 /**
2840  * show_fw_ver
2841  */
2842 static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr,
2843                            char *buf)
2844 {
2845         struct nes_ib_device *nesibdev =
2846                         container_of(dev, struct nes_ib_device, ibdev.dev);
2847         struct nes_vnic *nesvnic = nesibdev->nesvnic;
2848
2849         nes_debug(NES_DBG_INIT, "\n");
2850         return sprintf(buf, "%u.%u\n",
2851                 (nesvnic->nesdev->nesadapter->firmware_version >> 16),
2852                 (nesvnic->nesdev->nesadapter->firmware_version & 0x000000ff));
2853 }
2854
2855
2856 /**
2857  * show_hca
2858  */
2859 static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
2860                         char *buf)
2861 {
2862         nes_debug(NES_DBG_INIT, "\n");
2863         return sprintf(buf, "NES020\n");
2864 }
2865
2866
2867 /**
2868  * show_board
2869  */
2870 static ssize_t show_board(struct device *dev, struct device_attribute *attr,
2871                           char *buf)
2872 {
2873         nes_debug(NES_DBG_INIT, "\n");
2874         return sprintf(buf, "%.*s\n", 32, "NES020 Board ID");
2875 }
2876
2877
2878 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
2879 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
2880 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
2881 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
2882
2883 static struct device_attribute *nes_dev_attributes[] = {
2884         &dev_attr_hw_rev,
2885         &dev_attr_fw_ver,
2886         &dev_attr_hca_type,
2887         &dev_attr_board_id
2888 };
2889
2890
2891 /**
2892  * nes_query_qp
2893  */
2894 static int nes_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2895                 int attr_mask, struct ib_qp_init_attr *init_attr)
2896 {
2897         struct nes_qp *nesqp = to_nesqp(ibqp);
2898
2899         nes_debug(NES_DBG_QP, "\n");
2900
2901         attr->qp_access_flags = 0;
2902         attr->cap.max_send_wr = nesqp->hwqp.sq_size;
2903         attr->cap.max_recv_wr = nesqp->hwqp.rq_size;
2904         attr->cap.max_recv_sge = 1;
2905         if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) {
2906                 init_attr->cap.max_inline_data = 0;
2907         } else {
2908                 init_attr->cap.max_inline_data = 64;
2909         }
2910
2911         init_attr->event_handler = nesqp->ibqp.event_handler;
2912         init_attr->qp_context = nesqp->ibqp.qp_context;
2913         init_attr->send_cq = nesqp->ibqp.send_cq;
2914         init_attr->recv_cq = nesqp->ibqp.recv_cq;
2915         init_attr->srq = nesqp->ibqp.srq = nesqp->ibqp.srq;
2916         init_attr->cap = attr->cap;
2917
2918         return 0;
2919 }
2920
2921
2922 /**
2923  * nes_hw_modify_qp
2924  */
2925 int nes_hw_modify_qp(struct nes_device *nesdev, struct nes_qp *nesqp,
2926                 u32 next_iwarp_state, u32 termlen, u32 wait_completion)
2927 {
2928         struct nes_hw_cqp_wqe *cqp_wqe;
2929         /* struct iw_cm_id *cm_id = nesqp->cm_id; */
2930         /* struct iw_cm_event cm_event; */
2931         struct nes_cqp_request *cqp_request;
2932         int ret;
2933         u16 major_code;
2934
2935         nes_debug(NES_DBG_MOD_QP, "QP%u, refcount=%d\n",
2936                         nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
2937
2938         cqp_request = nes_get_cqp_request(nesdev);
2939         if (cqp_request == NULL) {
2940                 nes_debug(NES_DBG_MOD_QP, "Failed to get a cqp_request.\n");
2941                 return -ENOMEM;
2942         }
2943         if (wait_completion) {
2944                 cqp_request->waiting = 1;
2945         } else {
2946                 cqp_request->waiting = 0;
2947         }
2948         cqp_wqe = &cqp_request->cqp_wqe;
2949
2950         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2951                         NES_CQP_MODIFY_QP | NES_CQP_QP_TYPE_IWARP | next_iwarp_state);
2952         nes_debug(NES_DBG_MOD_QP, "using next_iwarp_state=%08x, wqe_words=%08x\n",
2953                         next_iwarp_state, le32_to_cpu(cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX]));
2954         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2955         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
2956         set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, (u64)nesqp->nesqp_context_pbase);
2957
2958         /* If sending a terminate message, fill in the length (in words) */
2959         if (((next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) == NES_CQP_QP_IWARP_STATE_TERMINATE) &&
2960             !(next_iwarp_state & NES_CQP_QP_TERM_DONT_SEND_TERM_MSG)) {
2961                 termlen = ((termlen + 3) >> 2) << NES_CQP_OP_TERMLEN_SHIFT;
2962                 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_NEW_MSS_IDX, termlen);
2963         }
2964
2965         atomic_set(&cqp_request->refcount, 2);
2966         nes_post_cqp_request(nesdev, cqp_request);
2967
2968         /* Wait for CQP */
2969         if (wait_completion) {
2970                 /* nes_debug(NES_DBG_MOD_QP, "Waiting for modify iWARP QP%u to complete.\n",
2971                                 nesqp->hwqp.qp_id); */
2972                 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2973                                 NES_EVENT_TIMEOUT);
2974                 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u completed, wait_event_timeout ret=%u, "
2975                                 "CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2976                                 nesqp->hwqp.qp_id, ret, cqp_request->major_code, cqp_request->minor_code);
2977                 major_code = cqp_request->major_code;
2978                 if (major_code) {
2979                         nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u failed"
2980                                         "CQP Major:Minor codes = 0x%04X:0x%04X, intended next state = 0x%08X.\n",
2981                                         nesqp->hwqp.qp_id, cqp_request->major_code,
2982                                         cqp_request->minor_code, next_iwarp_state);
2983                 }
2984
2985                 nes_put_cqp_request(nesdev, cqp_request);
2986
2987                 if (!ret)
2988                         return -ETIME;
2989                 else if (major_code)
2990                         return -EIO;
2991                 else
2992                         return 0;
2993         } else {
2994                 return 0;
2995         }
2996 }
2997
2998
2999 /**
3000  * nes_modify_qp
3001  */
3002 int nes_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
3003                 int attr_mask, struct ib_udata *udata)
3004 {
3005         struct nes_qp *nesqp = to_nesqp(ibqp);
3006         struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3007         struct nes_device *nesdev = nesvnic->nesdev;
3008         /* u32 cqp_head; */
3009         /* u32 counter; */
3010         u32 next_iwarp_state = 0;
3011         int err;
3012         unsigned long qplockflags;
3013         int ret;
3014         u16 original_last_aeq;
3015         u8 issue_modify_qp = 0;
3016         u8 issue_disconnect = 0;
3017         u8 dont_wait = 0;
3018
3019         nes_debug(NES_DBG_MOD_QP, "QP%u: QP State=%u, cur QP State=%u,"
3020                         " iwarp_state=0x%X, refcount=%d\n",
3021                         nesqp->hwqp.qp_id, attr->qp_state, nesqp->ibqp_state,
3022                         nesqp->iwarp_state, atomic_read(&nesqp->refcount));
3023
3024         spin_lock_irqsave(&nesqp->lock, qplockflags);
3025
3026         nes_debug(NES_DBG_MOD_QP, "QP%u: hw_iwarp_state=0x%X, hw_tcp_state=0x%X,"
3027                         " QP Access Flags=0x%X, attr_mask = 0x%0x\n",
3028                         nesqp->hwqp.qp_id, nesqp->hw_iwarp_state,
3029                         nesqp->hw_tcp_state, attr->qp_access_flags, attr_mask);
3030
3031         if (attr_mask & IB_QP_STATE) {
3032                 switch (attr->qp_state) {
3033                         case IB_QPS_INIT:
3034                                 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = init\n",
3035                                                 nesqp->hwqp.qp_id);
3036                                 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_IDLE) {
3037                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3038                                         return -EINVAL;
3039                                 }
3040                                 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
3041                                 issue_modify_qp = 1;
3042                                 break;
3043                         case IB_QPS_RTR:
3044                                 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rtr\n",
3045                                                 nesqp->hwqp.qp_id);
3046                                 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_IDLE) {
3047                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3048                                         return -EINVAL;
3049                                 }
3050                                 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
3051                                 issue_modify_qp = 1;
3052                                 break;
3053                         case IB_QPS_RTS:
3054                                 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rts\n",
3055                                                 nesqp->hwqp.qp_id);
3056                                 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_RTS) {
3057                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3058                                         return -EINVAL;
3059                                 }
3060                                 if (nesqp->cm_id == NULL) {
3061                                         nes_debug(NES_DBG_MOD_QP, "QP%u: Failing attempt to move QP to RTS without a CM_ID. \n",
3062                                                         nesqp->hwqp.qp_id );
3063                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3064                                         return -EINVAL;
3065                                 }
3066                                 next_iwarp_state = NES_CQP_QP_IWARP_STATE_RTS;
3067                                 if (nesqp->iwarp_state != NES_CQP_QP_IWARP_STATE_RTS)
3068                                         next_iwarp_state |= NES_CQP_QP_CONTEXT_VALID |
3069                                                         NES_CQP_QP_ARP_VALID | NES_CQP_QP_ORD_VALID;
3070                                 issue_modify_qp = 1;
3071                                 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_ESTABLISHED;
3072                                 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_RTS;
3073                                 nesqp->hte_added = 1;
3074                                 break;
3075                         case IB_QPS_SQD:
3076                                 issue_modify_qp = 1;
3077                                 nes_debug(NES_DBG_MOD_QP, "QP%u: new state=closing. SQ head=%u, SQ tail=%u\n",
3078                                                 nesqp->hwqp.qp_id, nesqp->hwqp.sq_head, nesqp->hwqp.sq_tail);
3079                                 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
3080                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3081                                         return 0;
3082                                 } else {
3083                                         if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
3084                                                 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
3085                                                                 " ignored due to current iWARP state\n",
3086                                                                 nesqp->hwqp.qp_id);
3087                                                 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3088                                                 return -EINVAL;
3089                                         }
3090                                         if (nesqp->hw_iwarp_state != NES_AEQE_IWARP_STATE_RTS) {
3091                                                 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
3092                                                                 " already done based on hw state.\n",
3093                                                                 nesqp->hwqp.qp_id);
3094                                                 issue_modify_qp = 0;
3095                                                 nesqp->in_disconnect = 0;
3096                                         }
3097                                         switch (nesqp->hw_iwarp_state) {
3098                                                 case NES_AEQE_IWARP_STATE_CLOSING:
3099                                                         next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
3100                                                 case NES_AEQE_IWARP_STATE_TERMINATE:
3101                                                         next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
3102                                                         break;
3103                                                 case NES_AEQE_IWARP_STATE_ERROR:
3104                                                         next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
3105                                                         break;
3106                                                 default:
3107                                                         next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
3108                                                         nesqp->in_disconnect = 1;
3109                                                         nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_CLOSING;
3110                                                         break;
3111                                         }
3112                                 }
3113                                 break;
3114                         case IB_QPS_SQE:
3115                                 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = terminate\n",
3116                                                 nesqp->hwqp.qp_id);
3117                                 if (nesqp->iwarp_state>=(u32)NES_CQP_QP_IWARP_STATE_TERMINATE) {
3118                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3119                                         return -EINVAL;
3120                                 }
3121                                 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
3122                                 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
3123                                 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_TERMINATE;
3124                                 issue_modify_qp = 1;
3125                                 nesqp->in_disconnect = 1;
3126                                 break;
3127                         case IB_QPS_ERR:
3128                         case IB_QPS_RESET:
3129                                 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_ERROR) {
3130                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3131                                         return -EINVAL;
3132                                 }
3133                                 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = error\n",
3134                                                 nesqp->hwqp.qp_id);
3135                                 if (nesqp->term_flags)
3136                                         del_timer(&nesqp->terminate_timer);
3137
3138                                 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
3139                                 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
3140                                         if (nesqp->hte_added) {
3141                                                 nes_debug(NES_DBG_MOD_QP, "set CQP_QP_DEL_HTE\n");
3142                                                 next_iwarp_state |= NES_CQP_QP_DEL_HTE;
3143                                                 nesqp->hte_added = 0;
3144                                         }
3145                                 if ((nesqp->hw_tcp_state > NES_AEQE_TCP_STATE_CLOSED) &&
3146                                                 (nesqp->hw_tcp_state != NES_AEQE_TCP_STATE_TIME_WAIT)) {
3147                                         next_iwarp_state |= NES_CQP_QP_RESET;
3148                                         nesqp->in_disconnect = 1;
3149                                 } else {
3150                                         nes_debug(NES_DBG_MOD_QP, "QP%u NOT setting NES_CQP_QP_RESET since TCP state = %u\n",
3151                                                         nesqp->hwqp.qp_id, nesqp->hw_tcp_state);
3152                                         dont_wait = 1;
3153                                 }
3154                                 issue_modify_qp = 1;
3155                                 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_ERROR;
3156                                 break;
3157                         default:
3158                                 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3159                                 return -EINVAL;
3160                                 break;
3161                 }
3162
3163                 nesqp->ibqp_state = attr->qp_state;
3164                 if (((nesqp->iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) ==
3165                                 (u32)NES_CQP_QP_IWARP_STATE_RTS) &&
3166                                 ((next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) >
3167                                 (u32)NES_CQP_QP_IWARP_STATE_RTS)) {
3168                         nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
3169                         nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
3170                                         nesqp->iwarp_state);
3171                         issue_disconnect = 1;
3172                 } else {
3173                         nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
3174                         nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
3175                                         nesqp->iwarp_state);
3176                 }
3177         }
3178
3179         if (attr_mask & IB_QP_ACCESS_FLAGS) {
3180                 if (attr->qp_access_flags & IB_ACCESS_LOCAL_WRITE) {
3181                         nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
3182                                         NES_QPCONTEXT_MISC_RDMA_READ_EN);
3183                         issue_modify_qp = 1;
3184                 }
3185                 if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE) {
3186                         nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN);
3187                         issue_modify_qp = 1;
3188                 }
3189                 if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ) {
3190                         nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_READ_EN);
3191                         issue_modify_qp = 1;
3192                 }
3193                 if (attr->qp_access_flags & IB_ACCESS_MW_BIND) {
3194                         nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_WBIND_EN);
3195                         issue_modify_qp = 1;
3196                 }
3197
3198                 if (nesqp->user_mode) {
3199                         nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
3200                                         NES_QPCONTEXT_MISC_RDMA_READ_EN);
3201                         issue_modify_qp = 1;
3202                 }
3203         }
3204
3205         original_last_aeq = nesqp->last_aeq;
3206         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3207
3208         nes_debug(NES_DBG_MOD_QP, "issue_modify_qp=%u\n", issue_modify_qp);
3209
3210         ret = 0;
3211
3212
3213         if (issue_modify_qp) {
3214                 nes_debug(NES_DBG_MOD_QP, "call nes_hw_modify_qp\n");
3215                 ret = nes_hw_modify_qp(nesdev, nesqp, next_iwarp_state, 0, 1);
3216                 if (ret)
3217                         nes_debug(NES_DBG_MOD_QP, "nes_hw_modify_qp (next_iwarp_state = 0x%08X)"
3218                                         " failed for QP%u.\n",
3219                                         next_iwarp_state, nesqp->hwqp.qp_id);
3220
3221         }
3222
3223         if ((issue_modify_qp) && (nesqp->ibqp_state > IB_QPS_RTS)) {
3224                 nes_debug(NES_DBG_MOD_QP, "QP%u Issued ModifyQP refcount (%d),"
3225                                 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3226                                 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3227                                 original_last_aeq, nesqp->last_aeq);
3228                 if ((!ret) ||
3229                                 ((original_last_aeq != NES_AEQE_AEID_RDMAP_ROE_BAD_LLP_CLOSE) &&
3230                                 (ret))) {
3231                         if (dont_wait) {
3232                                 if (nesqp->cm_id && nesqp->hw_tcp_state != 0) {
3233                                         nes_debug(NES_DBG_MOD_QP, "QP%u Queuing fake disconnect for QP refcount (%d),"
3234                                                         " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3235                                                         nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3236                                                         original_last_aeq, nesqp->last_aeq);
3237                                         /* this one is for the cm_disconnect thread */
3238                                         spin_lock_irqsave(&nesqp->lock, qplockflags);
3239                                         nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_CLOSED;
3240                                         nesqp->last_aeq = NES_AEQE_AEID_RESET_SENT;
3241                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3242                                         nes_cm_disconn(nesqp);
3243                                 } else {
3244                                         nes_debug(NES_DBG_MOD_QP, "QP%u No fake disconnect, QP refcount=%d\n",
3245                                                         nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3246                                 }
3247                         } else {
3248                                 spin_lock_irqsave(&nesqp->lock, qplockflags);
3249                                 if (nesqp->cm_id) {
3250                                         /* These two are for the timer thread */
3251                                         if (atomic_inc_return(&nesqp->close_timer_started) == 1) {
3252                                                 nesqp->cm_id->add_ref(nesqp->cm_id);
3253                                                 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3254                                                                 " need ae to finish up, original_last_aeq = 0x%04X."
3255                                                                 " last_aeq = 0x%04X, scheduling timer.\n",
3256                                                                 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3257                                                                 original_last_aeq, nesqp->last_aeq);
3258                                                 schedule_nes_timer(nesqp->cm_node, (struct sk_buff *) nesqp, NES_TIMER_TYPE_CLOSE, 1, 0);
3259                                         }
3260                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3261                                 } else {
3262                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3263                                         nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3264                                                         " need ae to finish up, original_last_aeq = 0x%04X."
3265                                                         " last_aeq = 0x%04X.\n",
3266                                                         nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3267                                                         original_last_aeq, nesqp->last_aeq);
3268                                 }
3269                         }
3270                 } else {
3271                         nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3272                                         " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3273                                         nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3274                                         original_last_aeq, nesqp->last_aeq);
3275                 }
3276         } else {
3277                 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3278                                 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3279                                 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3280                                 original_last_aeq, nesqp->last_aeq);
3281         }
3282
3283         err = 0;
3284
3285         nes_debug(NES_DBG_MOD_QP, "QP%u Leaving, refcount=%d\n",
3286                         nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3287
3288         return err;
3289 }
3290
3291
3292 /**
3293  * nes_muticast_attach
3294  */
3295 static int nes_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3296 {
3297         nes_debug(NES_DBG_INIT, "\n");
3298         return -ENOSYS;
3299 }
3300
3301
3302 /**
3303  * nes_multicast_detach
3304  */
3305 static int nes_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3306 {
3307         nes_debug(NES_DBG_INIT, "\n");
3308         return -ENOSYS;
3309 }
3310
3311
3312 /**
3313  * nes_process_mad
3314  */
3315 static int nes_process_mad(struct ib_device *ibdev, int mad_flags,
3316                 u8 port_num, struct ib_wc *in_wc, struct ib_grh *in_grh,
3317                 struct ib_mad *in_mad, struct ib_mad *out_mad)
3318 {
3319         nes_debug(NES_DBG_INIT, "\n");
3320         return -ENOSYS;
3321 }
3322
3323 static inline void
3324 fill_wqe_sg_send(struct nes_hw_qp_wqe *wqe, struct ib_send_wr *ib_wr, u32 uselkey)
3325 {
3326         int sge_index;
3327         int total_payload_length = 0;
3328         for (sge_index = 0; sge_index < ib_wr->num_sge; sge_index++) {
3329                 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3330                         ib_wr->sg_list[sge_index].addr);
3331                 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_LENGTH0_IDX + (sge_index*4),
3332                         ib_wr->sg_list[sge_index].length);
3333                 if (uselkey)
3334                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4),
3335                                                 (ib_wr->sg_list[sge_index].lkey));
3336                 else
3337                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4), 0);
3338
3339                 total_payload_length += ib_wr->sg_list[sge_index].length;
3340         }
3341         nes_debug(NES_DBG_IW_TX, "UC UC UC, sending total_payload_length=%u \n",
3342                         total_payload_length);
3343         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3344                                 total_payload_length);
3345 }
3346
3347 /**
3348  * nes_post_send
3349  */
3350 static int nes_post_send(struct ib_qp *ibqp, struct ib_send_wr *ib_wr,
3351                 struct ib_send_wr **bad_wr)
3352 {
3353         u64 u64temp;
3354         unsigned long flags = 0;
3355         struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3356         struct nes_device *nesdev = nesvnic->nesdev;
3357         struct nes_qp *nesqp = to_nesqp(ibqp);
3358         struct nes_hw_qp_wqe *wqe;
3359         int err;
3360         u32 qsize = nesqp->hwqp.sq_size;
3361         u32 head;
3362         u32 wqe_misc;
3363         u32 wqe_count;
3364         u32 counter;
3365         u32 total_payload_length;
3366
3367         err = 0;
3368         wqe_misc = 0;
3369         wqe_count = 0;
3370         total_payload_length = 0;
3371
3372         if (nesqp->ibqp_state > IB_QPS_RTS)
3373                 return -EINVAL;
3374
3375         spin_lock_irqsave(&nesqp->lock, flags);
3376
3377         head = nesqp->hwqp.sq_head;
3378
3379         while (ib_wr) {
3380                 /* Check for QP error */
3381                 if (nesqp->term_flags) {
3382                         err = -EINVAL;
3383                         break;
3384                 }
3385
3386                 /* Check for SQ overflow */
3387                 if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
3388                         err = -EINVAL;
3389                         break;
3390                 }
3391
3392                 wqe = &nesqp->hwqp.sq_vbase[head];
3393                 /* nes_debug(NES_DBG_IW_TX, "processing sq wqe for QP%u at %p, head = %u.\n",
3394                                 nesqp->hwqp.qp_id, wqe, head); */
3395                 nes_fill_init_qp_wqe(wqe, nesqp, head);
3396                 u64temp = (u64)(ib_wr->wr_id);
3397                 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3398                                         u64temp);
3399                         switch (ib_wr->opcode) {
3400                                 case IB_WR_SEND:
3401                                         if (ib_wr->send_flags & IB_SEND_SOLICITED) {
3402                                                 wqe_misc = NES_IWARP_SQ_OP_SENDSE;
3403                                         } else {
3404                                                 wqe_misc = NES_IWARP_SQ_OP_SEND;
3405                                         }
3406                                         if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3407                                                 err = -EINVAL;
3408                                                 break;
3409                                         }
3410                                         if (ib_wr->send_flags & IB_SEND_FENCE) {
3411                                                 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3412                                         }
3413                                         if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3414                                                         ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3415                                                         (ib_wr->sg_list[0].length <= 64)) {
3416                                                 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3417                                                                (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3418                                                 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3419                                                                 ib_wr->sg_list[0].length);
3420                                                 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3421                                         } else {
3422                                                 fill_wqe_sg_send(wqe, ib_wr, 1);
3423                                         }
3424
3425                                         break;
3426                                 case IB_WR_RDMA_WRITE:
3427                                         wqe_misc = NES_IWARP_SQ_OP_RDMAW;
3428                                         if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3429                                                 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=%u\n",
3430                                                                 ib_wr->num_sge,
3431                                                                 nesdev->nesadapter->max_sge);
3432                                                 err = -EINVAL;
3433                                                 break;
3434                                         }
3435                                         if (ib_wr->send_flags & IB_SEND_FENCE) {
3436                                                 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3437                                         }
3438
3439                                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3440                                                         ib_wr->wr.rdma.rkey);
3441                                         set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3442                                                         ib_wr->wr.rdma.remote_addr);
3443
3444                                         if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3445                                                         ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3446                                                         (ib_wr->sg_list[0].length <= 64)) {
3447                                                 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3448                                                                (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3449                                                 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3450                                                                 ib_wr->sg_list[0].length);
3451                                                 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3452                                         } else {
3453                                                 fill_wqe_sg_send(wqe, ib_wr, 1);
3454                                         }
3455                                         wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX] =
3456                                                         wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX];
3457                                         break;
3458                                 case IB_WR_RDMA_READ:
3459                                         /* iWARP only supports 1 sge for RDMA reads */
3460                                         if (ib_wr->num_sge > 1) {
3461                                                 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=1\n",
3462                                                                 ib_wr->num_sge);
3463                                                 err = -EINVAL;
3464                                                 break;
3465                                         }
3466                                         wqe_misc = NES_IWARP_SQ_OP_RDMAR;
3467                                         set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3468                                                         ib_wr->wr.rdma.remote_addr);
3469                                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3470                                                         ib_wr->wr.rdma.rkey);
3471                                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX,
3472                                                         ib_wr->sg_list->length);
3473                                         set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX,
3474                                                         ib_wr->sg_list->addr);
3475                                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX,
3476                                                         ib_wr->sg_list->lkey);
3477                                         break;
3478                                 default:
3479                                         /* error */
3480                                         err = -EINVAL;
3481                                         break;
3482                         }
3483
3484                 if (ib_wr->send_flags & IB_SEND_SIGNALED) {
3485                         wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
3486                 }
3487                 wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = cpu_to_le32(wqe_misc);
3488
3489                 ib_wr = ib_wr->next;
3490                 head++;
3491                 wqe_count++;
3492                 if (head >= qsize)
3493                         head = 0;
3494
3495         }
3496
3497         nesqp->hwqp.sq_head = head;
3498         barrier();
3499         while (wqe_count) {
3500                 counter = min(wqe_count, ((u32)255));
3501                 wqe_count -= counter;
3502                 nes_write32(nesdev->regs + NES_WQE_ALLOC,
3503                                 (counter << 24) | 0x00800000 | nesqp->hwqp.qp_id);
3504         }
3505
3506         spin_unlock_irqrestore(&nesqp->lock, flags);
3507
3508         if (err)
3509                 *bad_wr = ib_wr;
3510         return err;
3511 }
3512
3513
3514 /**
3515  * nes_post_recv
3516  */
3517 static int nes_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *ib_wr,
3518                 struct ib_recv_wr **bad_wr)
3519 {
3520         u64 u64temp;
3521         unsigned long flags = 0;
3522         struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3523         struct nes_device *nesdev = nesvnic->nesdev;
3524         struct nes_qp *nesqp = to_nesqp(ibqp);
3525         struct nes_hw_qp_wqe *wqe;
3526         int err = 0;
3527         int sge_index;
3528         u32 qsize = nesqp->hwqp.rq_size;
3529         u32 head;
3530         u32 wqe_count = 0;
3531         u32 counter;
3532         u32 total_payload_length;
3533
3534         if (nesqp->ibqp_state > IB_QPS_RTS)
3535                 return -EINVAL;
3536
3537         spin_lock_irqsave(&nesqp->lock, flags);
3538
3539         head = nesqp->hwqp.rq_head;
3540
3541         while (ib_wr) {
3542                 /* Check for QP error */
3543                 if (nesqp->term_flags) {
3544                         err = -EINVAL;
3545                         break;
3546                 }
3547
3548                 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3549                         err = -EINVAL;
3550                         break;
3551                 }
3552                 /* Check for RQ overflow */
3553                 if (((head + (2 * qsize) - nesqp->hwqp.rq_tail) % qsize) == (qsize - 1)) {
3554                         err = -EINVAL;
3555                         break;
3556                 }
3557
3558                 nes_debug(NES_DBG_IW_RX, "ibwr sge count = %u.\n", ib_wr->num_sge);
3559                 wqe = &nesqp->hwqp.rq_vbase[head];
3560
3561                 /* nes_debug(NES_DBG_IW_RX, "QP%u:processing rq wqe at %p, head = %u.\n",
3562                                 nesqp->hwqp.qp_id, wqe, head); */
3563                 nes_fill_init_qp_wqe(wqe, nesqp, head);
3564                 u64temp = (u64)(ib_wr->wr_id);
3565                 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3566                                         u64temp);
3567                 total_payload_length = 0;
3568                 for (sge_index=0; sge_index < ib_wr->num_sge; sge_index++) {
3569                         set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3570                                         ib_wr->sg_list[sge_index].addr);
3571                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_LENGTH0_IDX+(sge_index*4),
3572                                         ib_wr->sg_list[sge_index].length);
3573                         set_wqe_32bit_value(wqe->wqe_words,NES_IWARP_RQ_WQE_STAG0_IDX+(sge_index*4),
3574                                         ib_wr->sg_list[sge_index].lkey);
3575
3576                         total_payload_length += ib_wr->sg_list[sge_index].length;
3577                 }
3578                 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_TOTAL_PAYLOAD_IDX,
3579                                         total_payload_length);
3580
3581                 ib_wr = ib_wr->next;
3582                 head++;
3583                 wqe_count++;
3584                 if (head >= qsize)
3585                         head = 0;
3586         }
3587
3588         nesqp->hwqp.rq_head = head;
3589         barrier();
3590         while (wqe_count) {
3591                 counter = min(wqe_count, ((u32)255));
3592                 wqe_count -= counter;
3593                 nes_write32(nesdev->regs+NES_WQE_ALLOC, (counter<<24) | nesqp->hwqp.qp_id);
3594         }
3595
3596         spin_unlock_irqrestore(&nesqp->lock, flags);
3597
3598         if (err)
3599                 *bad_wr = ib_wr;
3600         return err;
3601 }
3602
3603
3604 /**
3605  * nes_poll_cq
3606  */
3607 static int nes_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry)
3608 {
3609         u64 u64temp;
3610         u64 wrid;
3611         unsigned long flags = 0;
3612         struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3613         struct nes_device *nesdev = nesvnic->nesdev;
3614         struct nes_cq *nescq = to_nescq(ibcq);
3615         struct nes_qp *nesqp;
3616         struct nes_hw_cqe cqe;
3617         u32 head;
3618         u32 wq_tail = 0;
3619         u32 cq_size;
3620         u32 cqe_count = 0;
3621         u32 wqe_index;
3622         u32 u32temp;
3623         u32 move_cq_head = 1;
3624         u32 err_code;
3625
3626         nes_debug(NES_DBG_CQ, "\n");
3627
3628         spin_lock_irqsave(&nescq->lock, flags);
3629
3630         head = nescq->hw_cq.cq_head;
3631         cq_size = nescq->hw_cq.cq_size;
3632
3633         while (cqe_count < num_entries) {
3634                 if ((le32_to_cpu(nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX]) &
3635                                 NES_CQE_VALID) == 0)
3636                         break;
3637
3638                 /*
3639                  * Make sure we read CQ entry contents *after*
3640                  * we've checked the valid bit.
3641                  */
3642                 rmb();
3643
3644                 cqe = nescq->hw_cq.cq_vbase[head];
3645                 u32temp = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3646                 wqe_index = u32temp & (nesdev->nesadapter->max_qp_wr - 1);
3647                 u32temp &= ~(NES_SW_CONTEXT_ALIGN-1);
3648                 /* parse CQE, get completion context from WQE (either rq or sq) */
3649                 u64temp = (((u64)(le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX])))<<32) |
3650                                 ((u64)u32temp);
3651
3652                 if (u64temp) {
3653                         nesqp = (struct nes_qp *)(unsigned long)u64temp;
3654                         memset(entry, 0, sizeof *entry);
3655                         if (cqe.cqe_words[NES_CQE_ERROR_CODE_IDX] == 0) {
3656                                 entry->status = IB_WC_SUCCESS;
3657                         } else {
3658                                 entry->status = IB_WC_WR_FLUSH_ERR;
3659                         }
3660
3661                         entry->qp = &nesqp->ibqp;
3662                         entry->src_qp = nesqp->hwqp.qp_id;
3663
3664                         if (le32_to_cpu(cqe.cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_SQ) {
3665                                 if (nesqp->skip_lsmm) {
3666                                         nesqp->skip_lsmm = 0;
3667                                         nesqp->hwqp.sq_tail++;
3668                                 }
3669
3670                                 /* Working on a SQ Completion*/
3671                                 wrid = (((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wqe_index].
3672                                                 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_HIGH_IDX]))) << 32) |
3673                                                 ((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wqe_index].
3674                                                 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX])));
3675                                 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3676                                                 wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX]);
3677
3678                                 switch (le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3679                                                 wqe_words[NES_IWARP_SQ_WQE_MISC_IDX]) & 0x3f) {
3680                                         case NES_IWARP_SQ_OP_RDMAW:
3681                                                 nes_debug(NES_DBG_CQ, "Operation = RDMA WRITE.\n");
3682                                                 entry->opcode = IB_WC_RDMA_WRITE;
3683                                                 break;
3684                                         case NES_IWARP_SQ_OP_RDMAR:
3685                                                 nes_debug(NES_DBG_CQ, "Operation = RDMA READ.\n");
3686                                                 entry->opcode = IB_WC_RDMA_READ;
3687                                                 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3688                                                                 wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX]);
3689                                                 break;
3690                                         case NES_IWARP_SQ_OP_SENDINV:
3691                                         case NES_IWARP_SQ_OP_SENDSEINV:
3692                                         case NES_IWARP_SQ_OP_SEND:
3693                                         case NES_IWARP_SQ_OP_SENDSE:
3694                                                 nes_debug(NES_DBG_CQ, "Operation = Send.\n");
3695                                                 entry->opcode = IB_WC_SEND;
3696                                                 break;
3697                                 }
3698
3699                                 nesqp->hwqp.sq_tail = (wqe_index+1)&(nesqp->hwqp.sq_size - 1);
3700                                 if ((entry->status != IB_WC_SUCCESS) && (nesqp->hwqp.sq_tail != nesqp->hwqp.sq_head)) {
3701                                         move_cq_head = 0;
3702                                         wq_tail = nesqp->hwqp.sq_tail;
3703                                 }
3704                         } else {
3705                                 /* Working on a RQ Completion*/
3706                                 entry->byte_len = le32_to_cpu(cqe.cqe_words[NES_CQE_PAYLOAD_LENGTH_IDX]);
3707                                 wrid = ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wqe_index].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_LOW_IDX]))) |
3708                                         ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wqe_index].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_HIGH_IDX]))<<32);
3709                                         entry->opcode = IB_WC_RECV;
3710
3711                                 nesqp->hwqp.rq_tail = (wqe_index+1)&(nesqp->hwqp.rq_size - 1);
3712                                 if ((entry->status != IB_WC_SUCCESS) && (nesqp->hwqp.rq_tail != nesqp->hwqp.rq_head)) {
3713                                         move_cq_head = 0;
3714                                         wq_tail = nesqp->hwqp.rq_tail;
3715                                 }
3716                         }
3717
3718                         entry->wr_id = wrid;
3719                         entry++;
3720                         cqe_count++;
3721                 }
3722
3723                 if (move_cq_head) {
3724                         nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX] = 0;
3725                         if (++head >= cq_size)
3726                                 head = 0;
3727                         nescq->polled_completions++;
3728
3729                         if ((nescq->polled_completions > (cq_size / 2)) ||
3730                                         (nescq->polled_completions == 255)) {
3731                                 nes_debug(NES_DBG_CQ, "CQ%u Issuing CQE Allocate since more than half of cqes"
3732                                         " are pending %u of %u.\n",
3733                                         nescq->hw_cq.cq_number, nescq->polled_completions, cq_size);
3734                                 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3735                                         nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3736                                 nescq->polled_completions = 0;
3737                         }
3738                 } else {
3739                         /* Update the wqe index and set status to flush */
3740                         wqe_index = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3741                         wqe_index = (wqe_index & (~(nesdev->nesadapter->max_qp_wr - 1))) | wq_tail;
3742                         nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX] =
3743                                 cpu_to_le32(wqe_index);
3744                         move_cq_head = 1; /* ready for next pass */
3745                 }
3746         }
3747
3748         if (nescq->polled_completions) {
3749                 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3750                                 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3751                 nescq->polled_completions = 0;
3752         }
3753
3754         nescq->hw_cq.cq_head = head;
3755         nes_debug(NES_DBG_CQ, "Reporting %u completions for CQ%u.\n",
3756                         cqe_count, nescq->hw_cq.cq_number);
3757
3758         spin_unlock_irqrestore(&nescq->lock, flags);
3759
3760         return cqe_count;
3761 }
3762
3763
3764 /**
3765  * nes_req_notify_cq
3766  */
3767 static int nes_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags notify_flags)
3768                 {
3769         struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3770         struct nes_device *nesdev = nesvnic->nesdev;
3771         struct nes_cq *nescq = to_nescq(ibcq);
3772         u32 cq_arm;
3773
3774         nes_debug(NES_DBG_CQ, "Requesting notification for CQ%u.\n",
3775                         nescq->hw_cq.cq_number);
3776
3777         cq_arm = nescq->hw_cq.cq_number;
3778         if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_NEXT_COMP)
3779                 cq_arm |= NES_CQE_ALLOC_NOTIFY_NEXT;
3780         else if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
3781                 cq_arm |= NES_CQE_ALLOC_NOTIFY_SE;
3782         else
3783                 return -EINVAL;
3784
3785         nes_write32(nesdev->regs+NES_CQE_ALLOC, cq_arm);
3786         nes_read32(nesdev->regs+NES_CQE_ALLOC);
3787
3788         return 0;
3789 }
3790
3791
3792 /**
3793  * nes_init_ofa_device
3794  */
3795 struct nes_ib_device *nes_init_ofa_device(struct net_device *netdev)
3796 {
3797         struct nes_ib_device *nesibdev;
3798         struct nes_vnic *nesvnic = netdev_priv(netdev);
3799         struct nes_device *nesdev = nesvnic->nesdev;
3800
3801         nesibdev = (struct nes_ib_device *)ib_alloc_device(sizeof(struct nes_ib_device));
3802         if (nesibdev == NULL) {
3803                 return NULL;
3804         }
3805         strlcpy(nesibdev->ibdev.name, "nes%d", IB_DEVICE_NAME_MAX);
3806         nesibdev->ibdev.owner = THIS_MODULE;
3807
3808         nesibdev->ibdev.node_type = RDMA_NODE_RNIC;
3809         memset(&nesibdev->ibdev.node_guid, 0, sizeof(nesibdev->ibdev.node_guid));
3810         memcpy(&nesibdev->ibdev.node_guid, netdev->dev_addr, 6);
3811
3812         nesibdev->ibdev.uverbs_cmd_mask =
3813                         (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
3814                         (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
3815                         (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
3816                         (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
3817                         (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
3818                         (1ull << IB_USER_VERBS_CMD_REG_MR) |
3819                         (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
3820                         (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
3821                         (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
3822                         (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
3823                         (1ull << IB_USER_VERBS_CMD_CREATE_AH) |
3824                         (1ull << IB_USER_VERBS_CMD_DESTROY_AH) |
3825                         (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
3826                         (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
3827                         (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
3828                         (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
3829                         (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
3830                         (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
3831                         (1ull << IB_USER_VERBS_CMD_BIND_MW) |
3832                         (1ull << IB_USER_VERBS_CMD_DEALLOC_MW) |
3833                         (1ull << IB_USER_VERBS_CMD_POST_RECV) |
3834                         (1ull << IB_USER_VERBS_CMD_POST_SEND);
3835
3836         nesibdev->ibdev.phys_port_cnt = 1;
3837         nesibdev->ibdev.num_comp_vectors = 1;
3838         nesibdev->ibdev.dma_device = &nesdev->pcidev->dev;
3839         nesibdev->ibdev.dev.parent = &nesdev->pcidev->dev;
3840         nesibdev->ibdev.query_device = nes_query_device;
3841         nesibdev->ibdev.query_port = nes_query_port;
3842         nesibdev->ibdev.modify_port = nes_modify_port;
3843         nesibdev->ibdev.query_pkey = nes_query_pkey;
3844         nesibdev->ibdev.query_gid = nes_query_gid;
3845         nesibdev->ibdev.alloc_ucontext = nes_alloc_ucontext;
3846         nesibdev->ibdev.dealloc_ucontext = nes_dealloc_ucontext;
3847         nesibdev->ibdev.mmap = nes_mmap;
3848         nesibdev->ibdev.alloc_pd = nes_alloc_pd;
3849         nesibdev->ibdev.dealloc_pd = nes_dealloc_pd;
3850         nesibdev->ibdev.create_ah = nes_create_ah;
3851         nesibdev->ibdev.destroy_ah = nes_destroy_ah;
3852         nesibdev->ibdev.create_qp = nes_create_qp;
3853         nesibdev->ibdev.modify_qp = nes_modify_qp;
3854         nesibdev->ibdev.query_qp = nes_query_qp;
3855         nesibdev->ibdev.destroy_qp = nes_destroy_qp;
3856         nesibdev->ibdev.create_cq = nes_create_cq;
3857         nesibdev->ibdev.destroy_cq = nes_destroy_cq;
3858         nesibdev->ibdev.poll_cq = nes_poll_cq;
3859         nesibdev->ibdev.get_dma_mr = nes_get_dma_mr;
3860         nesibdev->ibdev.reg_phys_mr = nes_reg_phys_mr;
3861         nesibdev->ibdev.reg_user_mr = nes_reg_user_mr;
3862         nesibdev->ibdev.dereg_mr = nes_dereg_mr;
3863         nesibdev->ibdev.alloc_mw = nes_alloc_mw;
3864         nesibdev->ibdev.dealloc_mw = nes_dealloc_mw;
3865         nesibdev->ibdev.bind_mw = nes_bind_mw;
3866
3867         nesibdev->ibdev.alloc_fmr = nes_alloc_fmr;
3868         nesibdev->ibdev.unmap_fmr = nes_unmap_fmr;
3869         nesibdev->ibdev.dealloc_fmr = nes_dealloc_fmr;
3870         nesibdev->ibdev.map_phys_fmr = nes_map_phys_fmr;
3871
3872         nesibdev->ibdev.attach_mcast = nes_multicast_attach;
3873         nesibdev->ibdev.detach_mcast = nes_multicast_detach;
3874         nesibdev->ibdev.process_mad = nes_process_mad;
3875
3876         nesibdev->ibdev.req_notify_cq = nes_req_notify_cq;
3877         nesibdev->ibdev.post_send = nes_post_send;
3878         nesibdev->ibdev.post_recv = nes_post_recv;
3879
3880         nesibdev->ibdev.iwcm = kzalloc(sizeof(*nesibdev->ibdev.iwcm), GFP_KERNEL);
3881         if (nesibdev->ibdev.iwcm == NULL) {
3882                 ib_dealloc_device(&nesibdev->ibdev);
3883                 return NULL;
3884         }
3885         nesibdev->ibdev.iwcm->add_ref = nes_add_ref;
3886         nesibdev->ibdev.iwcm->rem_ref = nes_rem_ref;
3887         nesibdev->ibdev.iwcm->get_qp = nes_get_qp;
3888         nesibdev->ibdev.iwcm->connect = nes_connect;
3889         nesibdev->ibdev.iwcm->accept = nes_accept;
3890         nesibdev->ibdev.iwcm->reject = nes_reject;
3891         nesibdev->ibdev.iwcm->create_listen = nes_create_listen;
3892         nesibdev->ibdev.iwcm->destroy_listen = nes_destroy_listen;
3893
3894         return nesibdev;
3895 }
3896
3897
3898 /**
3899  * nes_destroy_ofa_device
3900  */
3901 void nes_destroy_ofa_device(struct nes_ib_device *nesibdev)
3902 {
3903         if (nesibdev == NULL)
3904                 return;
3905
3906         nes_unregister_ofa_device(nesibdev);
3907
3908         kfree(nesibdev->ibdev.iwcm);
3909         ib_dealloc_device(&nesibdev->ibdev);
3910 }
3911
3912
3913 /**
3914  * nes_register_ofa_device
3915  */
3916 int nes_register_ofa_device(struct nes_ib_device *nesibdev)
3917 {
3918         struct nes_vnic *nesvnic = nesibdev->nesvnic;
3919         struct nes_device *nesdev = nesvnic->nesdev;
3920         struct nes_adapter *nesadapter = nesdev->nesadapter;
3921         int i, ret;
3922
3923         ret = ib_register_device(&nesvnic->nesibdev->ibdev);
3924         if (ret) {
3925                 return ret;
3926         }
3927
3928         /* Get the resources allocated to this device */
3929         nesibdev->max_cq = (nesadapter->max_cq-NES_FIRST_QPN) / nesadapter->port_count;
3930         nesibdev->max_mr = nesadapter->max_mr / nesadapter->port_count;
3931         nesibdev->max_qp = (nesadapter->max_qp-NES_FIRST_QPN) / nesadapter->port_count;
3932         nesibdev->max_pd = nesadapter->max_pd / nesadapter->port_count;
3933
3934         for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
3935                 ret = device_create_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
3936                 if (ret) {
3937                         while (i > 0) {
3938                                 i--;
3939                                 device_remove_file(&nesibdev->ibdev.dev,
3940                                                    nes_dev_attributes[i]);
3941                         }
3942                         ib_unregister_device(&nesibdev->ibdev);
3943                         return ret;
3944                 }
3945         }
3946
3947         nesvnic->of_device_registered = 1;
3948
3949         return 0;
3950 }
3951
3952
3953 /**
3954  * nes_unregister_ofa_device
3955  */
3956 static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev)
3957 {
3958         struct nes_vnic *nesvnic = nesibdev->nesvnic;
3959         int i;
3960
3961         for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
3962                 device_remove_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
3963         }
3964
3965         if (nesvnic->of_device_registered) {
3966                 ib_unregister_device(&nesibdev->ibdev);
3967         }
3968
3969         nesvnic->of_device_registered = 0;
3970 }