kernel/drivers/infiniband/hw/nes/nes_verbs.c

   1 /*
   2  * Copyright (c) 2006 - 2011 Intel Corporation.  All rights reserved.
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and/or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  *
  32  */
  33
  34 #include <linux/module.h>
  35 #include <linux/moduleparam.h>
  36 #include <linux/random.h>
  37 #include <linux/highmem.h>
  38 #include <linux/slab.h>
  39 #include <asm/byteorder.h>
  40
  41 #include <rdma/ib_verbs.h>
  42 #include <rdma/iw_cm.h>
  43 #include <rdma/ib_user_verbs.h>
  44
  45 #include "nes.h"
  46
  47 #include <rdma/ib_umem.h>
  48
  49 atomic_t mod_qp_timouts;
  50 atomic_t qps_created;
  51 atomic_t sw_qps_destroyed;
  52
  53 static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev);
  54 static int nes_dereg_mr(struct ib_mr *ib_mr);
  55
  56 /**
  57  * nes_alloc_mw
  58  */
  59 static struct ib_mw *nes_alloc_mw(struct ib_pd *ibpd, enum ib_mw_type type)
  60 {
  61         struct nes_pd *nespd = to_nespd(ibpd);
  62         struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
  63         struct nes_device *nesdev = nesvnic->nesdev;
  64         struct nes_adapter *nesadapter = nesdev->nesadapter;
  65         struct nes_cqp_request *cqp_request;
  66         struct nes_mr *nesmr;
  67         struct ib_mw *ibmw;
  68         struct nes_hw_cqp_wqe *cqp_wqe;
  69         int ret;
  70         u32 stag;
  71         u32 stag_index = 0;
  72         u32 next_stag_index = 0;
  73         u32 driver_key = 0;
  74         u8 stag_key = 0;
  75
  76         if (type != IB_MW_TYPE_1)
  77                 return ERR_PTR(-EINVAL);
  78
  79         get_random_bytes(&next_stag_index, sizeof(next_stag_index));
  80         stag_key = (u8)next_stag_index;
  81
  82         driver_key = 0;
  83
  84         next_stag_index >>= 8;
  85         next_stag_index %= nesadapter->max_mr;
  86
  87         ret = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
  88                         nesadapter->max_mr, &stag_index, &next_stag_index, NES_RESOURCE_MW);
  89         if (ret) {
  90                 return ERR_PTR(ret);
  91         }
  92
  93         nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
  94         if (!nesmr) {
  95                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
  96                 return ERR_PTR(-ENOMEM);
  97         }
  98
  99         stag = stag_index << 8;
 100         stag |= driver_key;
 101         stag += (u32)stag_key;
 102
 103         nes_debug(NES_DBG_MR, "Registering STag 0x%08X, index = 0x%08X\n",
 104                         stag, stag_index);
 105
 106         /* Register the region with the adapter */
 107         cqp_request = nes_get_cqp_request(nesdev);
 108         if (cqp_request == NULL) {
 109                 kfree(nesmr);
 110                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
 111                 return ERR_PTR(-ENOMEM);
 112         }
 113
 114         cqp_request->waiting = 1;
 115         cqp_wqe = &cqp_request->cqp_wqe;
 116
 117         cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] =
 118                         cpu_to_le32( NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_RIGHTS_REMOTE_READ |
 119                         NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_VA_TO |
 120                         NES_CQP_STAG_REM_ACC_EN);
 121
 122         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
 123         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX, (nespd->pd_id & 0x00007fff));
 124         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
 125
 126         atomic_set(&cqp_request->refcount, 2);
 127         nes_post_cqp_request(nesdev, cqp_request);
 128
 129         /* Wait for CQP */
 130         ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
 131                         NES_EVENT_TIMEOUT);
 132         nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
 133                         " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
 134                         stag, ret, cqp_request->major_code, cqp_request->minor_code);
 135         if ((!ret) || (cqp_request->major_code)) {
 136                 nes_put_cqp_request(nesdev, cqp_request);
 137                 kfree(nesmr);
 138                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
 139                 if (!ret) {
 140                         return ERR_PTR(-ETIME);
 141                 } else {
 142                         return ERR_PTR(-ENOMEM);
 143                 }
 144         }
 145         nes_put_cqp_request(nesdev, cqp_request);
 146
 147         nesmr->ibmw.rkey = stag;
 148         nesmr->mode = IWNES_MEMREG_TYPE_MW;
 149         ibmw = &nesmr->ibmw;
 150         nesmr->pbl_4k = 0;
 151         nesmr->pbls_used = 0;
 152
 153         return ibmw;
 154 }
 155
 156
 157 /**
 158  * nes_dealloc_mw
 159  */
 160 static int nes_dealloc_mw(struct ib_mw *ibmw)
 161 {
 162         struct nes_mr *nesmr = to_nesmw(ibmw);
 163         struct nes_vnic *nesvnic = to_nesvnic(ibmw->device);
 164         struct nes_device *nesdev = nesvnic->nesdev;
 165         struct nes_adapter *nesadapter = nesdev->nesadapter;
 166         struct nes_hw_cqp_wqe *cqp_wqe;
 167         struct nes_cqp_request *cqp_request;
 168         int err = 0;
 169         int ret;
 170
 171         /* Deallocate the window with the adapter */
 172         cqp_request = nes_get_cqp_request(nesdev);
 173         if (cqp_request == NULL) {
 174                 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
 175                 return -ENOMEM;
 176         }
 177         cqp_request->waiting = 1;
 178         cqp_wqe = &cqp_request->cqp_wqe;
 179         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
 180         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, NES_CQP_DEALLOCATE_STAG);
 181         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ibmw->rkey);
 182
 183         atomic_set(&cqp_request->refcount, 2);
 184         nes_post_cqp_request(nesdev, cqp_request);
 185
 186         /* Wait for CQP */
 187         nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X to complete.\n",
 188                         ibmw->rkey);
 189         ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
 190                         NES_EVENT_TIMEOUT);
 191         nes_debug(NES_DBG_MR, "Deallocate STag completed, wait_event_timeout ret = %u,"
 192                         " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
 193                         ret, cqp_request->major_code, cqp_request->minor_code);
 194         if (!ret)
 195                 err = -ETIME;
 196         else if (cqp_request->major_code)
 197                 err = -EIO;
 198
 199         nes_put_cqp_request(nesdev, cqp_request);
 200
 201         nes_free_resource(nesadapter, nesadapter->allocated_mrs,
 202                         (ibmw->rkey & 0x0fffff00) >> 8);
 203         kfree(nesmr);
 204
 205         return err;
 206 }
 207
 208
 209 /**
 210  * nes_bind_mw
 211  */
 212 static int nes_bind_mw(struct ib_qp *ibqp, struct ib_mw *ibmw,
 213                 struct ib_mw_bind *ibmw_bind)
 214 {
 215         u64 u64temp;
 216         struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
 217         struct nes_device *nesdev = nesvnic->nesdev;
 218         /* struct nes_mr *nesmr = to_nesmw(ibmw); */
 219         struct nes_qp *nesqp = to_nesqp(ibqp);
 220         struct nes_hw_qp_wqe *wqe;
 221         unsigned long flags = 0;
 222         u32 head;
 223         u32 wqe_misc = 0;
 224         u32 qsize;
 225
 226         if (nesqp->ibqp_state > IB_QPS_RTS)
 227                 return -EINVAL;
 228
 229         spin_lock_irqsave(&nesqp->lock, flags);
 230
 231         head = nesqp->hwqp.sq_head;
 232         qsize = nesqp->hwqp.sq_tail;
 233
 234         /* Check for SQ overflow */
 235         if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
 236                 spin_unlock_irqrestore(&nesqp->lock, flags);
 237                 return -ENOMEM;
 238         }
 239
 240         wqe = &nesqp->hwqp.sq_vbase[head];
 241         /* nes_debug(NES_DBG_MR, "processing sq wqe at %p, head = %u.\n", wqe, head); */
 242         nes_fill_init_qp_wqe(wqe, nesqp, head);
 243         u64temp = ibmw_bind->wr_id;
 244         set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX, u64temp);
 245         wqe_misc = NES_IWARP_SQ_OP_BIND;
 246
 247         wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
 248
 249         if (ibmw_bind->send_flags & IB_SEND_SIGNALED)
 250                 wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
 251
 252         if (ibmw_bind->bind_info.mw_access_flags & IB_ACCESS_REMOTE_WRITE)
 253                 wqe_misc |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE;
 254         if (ibmw_bind->bind_info.mw_access_flags & IB_ACCESS_REMOTE_READ)
 255                 wqe_misc |= NES_CQP_STAG_RIGHTS_REMOTE_READ;
 256
 257         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_MISC_IDX, wqe_misc);
 258         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_MR_IDX,
 259                             ibmw_bind->bind_info.mr->lkey);
 260         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_MW_IDX, ibmw->rkey);
 261         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_LENGTH_LOW_IDX,
 262                         ibmw_bind->bind_info.length);
 263         wqe->wqe_words[NES_IWARP_SQ_BIND_WQE_LENGTH_HIGH_IDX] = 0;
 264         u64temp = (u64)ibmw_bind->bind_info.addr;
 265         set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_VA_FBO_LOW_IDX, u64temp);
 266
 267         head++;
 268         if (head >= qsize)
 269                 head = 0;
 270
 271         nesqp->hwqp.sq_head = head;
 272         barrier();
 273
 274         nes_write32(nesdev->regs+NES_WQE_ALLOC,
 275                         (1 << 24) | 0x00800000 | nesqp->hwqp.qp_id);
 276
 277         spin_unlock_irqrestore(&nesqp->lock, flags);
 278
 279         return 0;
 280 }
 281
 282
 283 /*
 284  * nes_alloc_fast_mr
 285  */
 286 static int alloc_fast_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd,
 287                              u32 stag, u32 page_count)
 288 {
 289         struct nes_hw_cqp_wqe *cqp_wqe;
 290         struct nes_cqp_request *cqp_request;
 291         unsigned long flags;
 292         int ret;
 293         struct nes_adapter *nesadapter = nesdev->nesadapter;
 294         u32 opcode = 0;
 295         u16 major_code;
 296         u64 region_length = page_count * PAGE_SIZE;
 297
 298
 299         cqp_request = nes_get_cqp_request(nesdev);
 300         if (cqp_request == NULL) {
 301                 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
 302                 return -ENOMEM;
 303         }
 304         nes_debug(NES_DBG_MR, "alloc_fast_reg_mr: page_count = %d, "
 305                               "region_length = %llu\n",
 306                               page_count, region_length);
 307         cqp_request->waiting = 1;
 308         cqp_wqe = &cqp_request->cqp_wqe;
 309
 310         spin_lock_irqsave(&nesadapter->pbl_lock, flags);
 311         if (nesadapter->free_4kpbl > 0) {
 312                 nesadapter->free_4kpbl--;
 313                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
 314         } else {
 315                 /* No 4kpbl's available: */
 316                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
 317                 nes_debug(NES_DBG_MR, "Out of Pbls\n");
 318                 nes_free_cqp_request(nesdev, cqp_request);
 319                 return -ENOMEM;
 320         }
 321
 322         opcode = NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_MR |
 323                  NES_CQP_STAG_PBL_BLK_SIZE | NES_CQP_STAG_VA_TO |
 324                  NES_CQP_STAG_REM_ACC_EN;
 325         /*
 326          * The current OFED API does not support the zero based TO option.
 327          * If added then need to changed the NES_CQP_STAG_VA* option.  Also,
 328          * the API does not support that ability to have the MR set for local
 329          * access only when created and not allow the SQ op to override. Given
 330          * this the remote enable must be set here.
 331          */
 332
 333         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
 334         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
 335         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, 1);
 336
 337         cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] =
 338                         cpu_to_le32((u32)(region_length >> 8) & 0xff000000);
 339         cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |=
 340                         cpu_to_le32(nespd->pd_id & 0x00007fff);
 341
 342         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
 343         set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, 0);
 344         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, 0);
 345         set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, 0);
 346         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX, (page_count * 8));
 347         cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE);
 348         barrier();
 349
 350         atomic_set(&cqp_request->refcount, 2);
 351         nes_post_cqp_request(nesdev, cqp_request);
 352
 353         /* Wait for CQP */
 354         ret = wait_event_timeout(cqp_request->waitq,
 355                                  (0 != cqp_request->request_done),
 356                                  NES_EVENT_TIMEOUT);
 357
 358         nes_debug(NES_DBG_MR, "Allocate STag 0x%08X completed, "
 359                   "wait_event_timeout ret = %u, CQP Major:Minor codes = "
 360                   "0x%04X:0x%04X.\n", stag, ret, cqp_request->major_code,
 361                   cqp_request->minor_code);
 362         major_code = cqp_request->major_code;
 363         nes_put_cqp_request(nesdev, cqp_request);
 364
 365         if (!ret || major_code) {
 366                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
 367                 nesadapter->free_4kpbl++;
 368                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
 369         }
 370
 371         if (!ret)
 372                 return -ETIME;
 373         else if (major_code)
 374                 return -EIO;
 375         return 0;
 376 }
 377
 378 /*
 379  * nes_alloc_mr
 380  */
 381 static struct ib_mr *nes_alloc_mr(struct ib_pd *ibpd,
 382                                   enum ib_mr_type mr_type,
 383                                   u32 max_num_sg)
 384 {
 385         struct nes_pd *nespd = to_nespd(ibpd);
 386         struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
 387         struct nes_device *nesdev = nesvnic->nesdev;
 388         struct nes_adapter *nesadapter = nesdev->nesadapter;
 389
 390         u32 next_stag_index;
 391         u8 stag_key = 0;
 392         u32 driver_key = 0;
 393         int err = 0;
 394         u32 stag_index = 0;
 395         struct nes_mr *nesmr;
 396         u32 stag;
 397         int ret;
 398         struct ib_mr *ibmr;
 399
 400         if (mr_type != IB_MR_TYPE_MEM_REG)
 401                 return ERR_PTR(-EINVAL);
 402
 403         if (max_num_sg > (NES_4K_PBL_CHUNK_SIZE / sizeof(u64)))
 404                 return ERR_PTR(-E2BIG);
 405
 406 /*
 407  * Note:  Set to always use a fixed length single page entry PBL.  This is to allow
 408  *       for the fast_reg_mr operation to always know the size of the PBL.
 409  */
 410         if (max_num_sg > (NES_4K_PBL_CHUNK_SIZE / sizeof(u64)))
 411                 return ERR_PTR(-E2BIG);
 412
 413         get_random_bytes(&next_stag_index, sizeof(next_stag_index));
 414         stag_key = (u8)next_stag_index;
 415         next_stag_index >>= 8;
 416         next_stag_index %= nesadapter->max_mr;
 417
 418         err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
 419                                  nesadapter->max_mr, &stag_index,
 420                                  &next_stag_index, NES_RESOURCE_FAST_MR);
 421         if (err)
 422                 return ERR_PTR(err);
 423
 424         nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
 425         if (!nesmr) {
 426                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
 427                 return ERR_PTR(-ENOMEM);
 428         }
 429
 430         stag = stag_index << 8;
 431         stag |= driver_key;
 432         stag += (u32)stag_key;
 433
 434         nes_debug(NES_DBG_MR, "Allocating STag 0x%08X index = 0x%08X\n",
 435                   stag, stag_index);
 436
 437         ret = alloc_fast_reg_mr(nesdev, nespd, stag, max_num_sg);
 438
 439         if (ret == 0) {
 440                 nesmr->ibmr.rkey = stag;
 441                 nesmr->ibmr.lkey = stag;
 442                 nesmr->mode = IWNES_MEMREG_TYPE_FMEM;
 443                 ibmr = &nesmr->ibmr;
 444         } else {
 445                 kfree(nesmr);
 446                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
 447                 return ERR_PTR(-ENOMEM);
 448         }
 449
 450         nesmr->pages = pci_alloc_consistent(nesdev->pcidev,
 451                                             max_num_sg * sizeof(u64),
 452                                             &nesmr->paddr);
 453         if (!nesmr->paddr)
 454                 goto err;
 455
 456         nesmr->max_pages = max_num_sg;
 457
 458         return ibmr;
 459
 460 err:
 461         nes_dereg_mr(ibmr);
 462
 463         return ERR_PTR(-ENOMEM);
 464 }
 465
 466 static int nes_set_page(struct ib_mr *ibmr, u64 addr)
 467 {
 468         struct nes_mr *nesmr = to_nesmr(ibmr);
 469
 470         if (unlikely(nesmr->npages == nesmr->max_pages))
 471                 return -ENOMEM;
 472
 473         nesmr->pages[nesmr->npages++] = cpu_to_le64(addr);
 474
 475         return 0;
 476 }
 477
 478 static int nes_map_mr_sg(struct ib_mr *ibmr,
 479                          struct scatterlist *sg,
 480                          int sg_nents)
 481 {
 482         struct nes_mr *nesmr = to_nesmr(ibmr);
 483
 484         nesmr->npages = 0;
 485
 486         return ib_sg_to_pages(ibmr, sg, sg_nents, nes_set_page);
 487 }
 488
 489 /**
 490  * nes_query_device
 491  */
 492 static int nes_query_device(struct ib_device *ibdev, struct ib_device_attr *props,
 493                             struct ib_udata *uhw)
 494 {
 495         struct nes_vnic *nesvnic = to_nesvnic(ibdev);
 496         struct nes_device *nesdev = nesvnic->nesdev;
 497         struct nes_ib_device *nesibdev = nesvnic->nesibdev;
 498
 499         if (uhw->inlen || uhw->outlen)
 500                 return -EINVAL;
 501
 502         memset(props, 0, sizeof(*props));
 503         memcpy(&props->sys_image_guid, nesvnic->netdev->dev_addr, 6);
 504
 505         props->fw_ver = nesdev->nesadapter->firmware_version;
 506         props->device_cap_flags = nesdev->nesadapter->device_cap_flags;
 507         props->vendor_id = nesdev->nesadapter->vendor_id;
 508         props->vendor_part_id = nesdev->nesadapter->vendor_part_id;
 509         props->hw_ver = nesdev->nesadapter->hw_rev;
 510         props->max_mr_size = 0x80000000;
 511         props->max_qp = nesibdev->max_qp;
 512         props->max_qp_wr = nesdev->nesadapter->max_qp_wr - 2;
 513         props->max_sge = nesdev->nesadapter->max_sge;
 514         props->max_cq = nesibdev->max_cq;
 515         props->max_cqe = nesdev->nesadapter->max_cqe;
 516         props->max_mr = nesibdev->max_mr;
 517         props->max_mw = nesibdev->max_mr;
 518         props->max_pd = nesibdev->max_pd;
 519         props->max_sge_rd = 1;
 520         switch (nesdev->nesadapter->max_irrq_wr) {
 521                 case 0:
 522                         props->max_qp_rd_atom = 2;
 523                         break;
 524                 case 1:
 525                         props->max_qp_rd_atom = 8;
 526                         break;
 527                 case 2:
 528                         props->max_qp_rd_atom = 32;
 529                         break;
 530                 case 3:
 531                         props->max_qp_rd_atom = 64;
 532                         break;
 533                 default:
 534                         props->max_qp_rd_atom = 0;
 535         }
 536         props->max_qp_init_rd_atom = props->max_qp_rd_atom;
 537         props->atomic_cap = IB_ATOMIC_NONE;
 538         props->max_map_per_fmr = 1;
 539
 540         return 0;
 541 }
 542
 543
 544 /**
 545  * nes_query_port
 546  */
 547 static int nes_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props)
 548 {
 549         struct nes_vnic *nesvnic = to_nesvnic(ibdev);
 550         struct net_device *netdev = nesvnic->netdev;
 551
 552         memset(props, 0, sizeof(*props));
 553
 554         props->max_mtu = IB_MTU_4096;
 555
 556         if (netdev->mtu  >= 4096)
 557                 props->active_mtu = IB_MTU_4096;
 558         else if (netdev->mtu  >= 2048)
 559                 props->active_mtu = IB_MTU_2048;
 560         else if (netdev->mtu  >= 1024)
 561                 props->active_mtu = IB_MTU_1024;
 562         else if (netdev->mtu  >= 512)
 563                 props->active_mtu = IB_MTU_512;
 564         else
 565                 props->active_mtu = IB_MTU_256;
 566
 567         props->lid = 1;
 568         props->lmc = 0;
 569         props->sm_lid = 0;
 570         props->sm_sl = 0;
 571         if (netif_queue_stopped(netdev))
 572                 props->state = IB_PORT_DOWN;
 573         else if (nesvnic->linkup)
 574                 props->state = IB_PORT_ACTIVE;
 575         else
 576                 props->state = IB_PORT_DOWN;
 577         props->phys_state = 0;
 578         props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP |
 579                         IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
 580         props->gid_tbl_len = 1;
 581         props->pkey_tbl_len = 1;
 582         props->qkey_viol_cntr = 0;
 583         props->active_width = IB_WIDTH_4X;
 584         props->active_speed = IB_SPEED_SDR;
 585         props->max_msg_sz = 0x80000000;
 586
 587         return 0;
 588 }
 589
 590 /**
 591  * nes_query_pkey
 592  */
 593 static int nes_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
 594 {
 595         *pkey = 0;
 596         return 0;
 597 }
 598
 599
 600 /**
 601  * nes_query_gid
 602  */
 603 static int nes_query_gid(struct ib_device *ibdev, u8 port,
 604                 int index, union ib_gid *gid)
 605 {
 606         struct nes_vnic *nesvnic = to_nesvnic(ibdev);
 607
 608         memset(&(gid->raw[0]), 0, sizeof(gid->raw));
 609         memcpy(&(gid->raw[0]), nesvnic->netdev->dev_addr, 6);
 610
 611         return 0;
 612 }
 613
 614
 615 /**
 616  * nes_alloc_ucontext - Allocate the user context data structure. This keeps track
 617  * of all objects associated with a particular user-mode client.
 618  */
 619 static struct ib_ucontext *nes_alloc_ucontext(struct ib_device *ibdev,
 620                 struct ib_udata *udata)
 621 {
 622         struct nes_vnic *nesvnic = to_nesvnic(ibdev);
 623         struct nes_device *nesdev = nesvnic->nesdev;
 624         struct nes_adapter *nesadapter = nesdev->nesadapter;
 625         struct nes_alloc_ucontext_req req;
 626         struct nes_alloc_ucontext_resp uresp;
 627         struct nes_ucontext *nes_ucontext;
 628         struct nes_ib_device *nesibdev = nesvnic->nesibdev;
 629
 630
 631         if (ib_copy_from_udata(&req, udata, sizeof(struct nes_alloc_ucontext_req))) {
 632                 printk(KERN_ERR PFX "Invalid structure size on allocate user context.\n");
 633                 return ERR_PTR(-EINVAL);
 634         }
 635
 636         if (req.userspace_ver != NES_ABI_USERSPACE_VER) {
 637                 printk(KERN_ERR PFX "Invalid userspace driver version detected. Detected version %d, should be %d\n",
 638                         req.userspace_ver, NES_ABI_USERSPACE_VER);
 639                 return ERR_PTR(-EINVAL);
 640         }
 641
 642
 643         memset(&uresp, 0, sizeof uresp);
 644
 645         uresp.max_qps = nesibdev->max_qp;
 646         uresp.max_pds = nesibdev->max_pd;
 647         uresp.wq_size = nesdev->nesadapter->max_qp_wr * 2;
 648         uresp.virtwq = nesadapter->virtwq;
 649         uresp.kernel_ver = NES_ABI_KERNEL_VER;
 650
 651         nes_ucontext = kzalloc(sizeof *nes_ucontext, GFP_KERNEL);
 652         if (!nes_ucontext)
 653                 return ERR_PTR(-ENOMEM);
 654
 655         nes_ucontext->nesdev = nesdev;
 656         nes_ucontext->mmap_wq_offset = uresp.max_pds;
 657         nes_ucontext->mmap_cq_offset = nes_ucontext->mmap_wq_offset +
 658                         ((sizeof(struct nes_hw_qp_wqe) * uresp.max_qps * 2) + PAGE_SIZE-1) /
 659                         PAGE_SIZE;
 660
 661
 662         if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
 663                 kfree(nes_ucontext);
 664                 return ERR_PTR(-EFAULT);
 665         }
 666
 667         INIT_LIST_HEAD(&nes_ucontext->cq_reg_mem_list);
 668         INIT_LIST_HEAD(&nes_ucontext->qp_reg_mem_list);
 669         atomic_set(&nes_ucontext->usecnt, 1);
 670         return &nes_ucontext->ibucontext;
 671 }
 672
 673
 674 /**
 675  * nes_dealloc_ucontext
 676  */
 677 static int nes_dealloc_ucontext(struct ib_ucontext *context)
 678 {
 679         /* struct nes_vnic *nesvnic = to_nesvnic(context->device); */
 680         /* struct nes_device *nesdev = nesvnic->nesdev; */
 681         struct nes_ucontext *nes_ucontext = to_nesucontext(context);
 682
 683         if (!atomic_dec_and_test(&nes_ucontext->usecnt))
 684           return 0;
 685         kfree(nes_ucontext);
 686         return 0;
 687 }
 688
 689
 690 /**
 691  * nes_mmap
 692  */
 693 static int nes_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
 694 {
 695         unsigned long index;
 696         struct nes_vnic *nesvnic = to_nesvnic(context->device);
 697         struct nes_device *nesdev = nesvnic->nesdev;
 698         /* struct nes_adapter *nesadapter = nesdev->nesadapter; */
 699         struct nes_ucontext *nes_ucontext;
 700         struct nes_qp *nesqp;
 701
 702         nes_ucontext = to_nesucontext(context);
 703
 704
 705         if (vma->vm_pgoff >= nes_ucontext->mmap_wq_offset) {
 706                 index = (vma->vm_pgoff - nes_ucontext->mmap_wq_offset) * PAGE_SIZE;
 707                 index /= ((sizeof(struct nes_hw_qp_wqe) * nesdev->nesadapter->max_qp_wr * 2) +
 708                                 PAGE_SIZE-1) & (~(PAGE_SIZE-1));
 709                 if (!test_bit(index, nes_ucontext->allocated_wqs)) {
 710                         nes_debug(NES_DBG_MMAP, "wq %lu not allocated\n", index);
 711                         return -EFAULT;
 712                 }
 713                 nesqp = nes_ucontext->mmap_nesqp[index];
 714                 if (nesqp == NULL) {
 715                         nes_debug(NES_DBG_MMAP, "wq %lu has a NULL QP base.\n", index);
 716                         return -EFAULT;
 717                 }
 718                 if (remap_pfn_range(vma, vma->vm_start,
 719                                 virt_to_phys(nesqp->hwqp.sq_vbase) >> PAGE_SHIFT,
 720                                 vma->vm_end - vma->vm_start,
 721                                 vma->vm_page_prot)) {
 722                         nes_debug(NES_DBG_MMAP, "remap_pfn_range failed.\n");
 723                         return -EAGAIN;
 724                 }
 725                 vma->vm_private_data = nesqp;
 726                 return 0;
 727         } else {
 728                 index = vma->vm_pgoff;
 729                 if (!test_bit(index, nes_ucontext->allocated_doorbells))
 730                         return -EFAULT;
 731
 732                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 733                 if (io_remap_pfn_range(vma, vma->vm_start,
 734                                 (nesdev->doorbell_start +
 735                                 ((nes_ucontext->mmap_db_index[index] - nesdev->base_doorbell_index) * 4096))
 736                                 >> PAGE_SHIFT, PAGE_SIZE, vma->vm_page_prot))
 737                         return -EAGAIN;
 738                 vma->vm_private_data = nes_ucontext;
 739                 return 0;
 740         }
 741
 742         return -ENOSYS;
 743 }
 744
 745
 746 /**
 747  * nes_alloc_pd
 748  */
 749 static struct ib_pd *nes_alloc_pd(struct ib_device *ibdev,
 750                 struct ib_ucontext *context, struct ib_udata *udata)
 751 {
 752         struct nes_pd *nespd;
 753         struct nes_vnic *nesvnic = to_nesvnic(ibdev);
 754         struct nes_device *nesdev = nesvnic->nesdev;
 755         struct nes_adapter *nesadapter = nesdev->nesadapter;
 756         struct nes_ucontext *nesucontext;
 757         struct nes_alloc_pd_resp uresp;
 758         u32 pd_num = 0;
 759         int err;
 760
 761         nes_debug(NES_DBG_PD, "nesvnic=%p, netdev=%p %s, ibdev=%p, context=%p, netdev refcnt=%u\n",
 762                         nesvnic, nesdev->netdev[0], nesdev->netdev[0]->name, ibdev, context,
 763                         netdev_refcnt_read(nesvnic->netdev));
 764
 765         err = nes_alloc_resource(nesadapter, nesadapter->allocated_pds,
 766                         nesadapter->max_pd, &pd_num, &nesadapter->next_pd, NES_RESOURCE_PD);
 767         if (err) {
 768                 return ERR_PTR(err);
 769         }
 770
 771         nespd = kzalloc(sizeof (struct nes_pd), GFP_KERNEL);
 772         if (!nespd) {
 773                 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
 774                 return ERR_PTR(-ENOMEM);
 775         }
 776
 777         nes_debug(NES_DBG_PD, "Allocating PD (%p) for ib device %s\n",
 778                         nespd, nesvnic->nesibdev->ibdev.name);
 779
 780         nespd->pd_id = (pd_num << (PAGE_SHIFT-12)) + nesadapter->base_pd;
 781
 782         if (context) {
 783                 nesucontext = to_nesucontext(context);
 784                 nespd->mmap_db_index = find_next_zero_bit(nesucontext->allocated_doorbells,
 785                                 NES_MAX_USER_DB_REGIONS, nesucontext->first_free_db);
 786                 nes_debug(NES_DBG_PD, "find_first_zero_biton doorbells returned %u, mapping pd_id %u.\n",
 787                                 nespd->mmap_db_index, nespd->pd_id);
 788                 if (nespd->mmap_db_index >= NES_MAX_USER_DB_REGIONS) {
 789                         nes_debug(NES_DBG_PD, "mmap_db_index > MAX\n");
 790                         nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
 791                         kfree(nespd);
 792                         return ERR_PTR(-ENOMEM);
 793                 }
 794
 795                 uresp.pd_id = nespd->pd_id;
 796                 uresp.mmap_db_index = nespd->mmap_db_index;
 797                 if (ib_copy_to_udata(udata, &uresp, sizeof (struct nes_alloc_pd_resp))) {
 798                         nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
 799                         kfree(nespd);
 800                         return ERR_PTR(-EFAULT);
 801                 }
 802
 803                 set_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
 804                 nesucontext->mmap_db_index[nespd->mmap_db_index] = nespd->pd_id;
 805                 nesucontext->first_free_db = nespd->mmap_db_index + 1;
 806         }
 807
 808         nes_debug(NES_DBG_PD, "PD%u structure located @%p.\n", nespd->pd_id, nespd);
 809         return &nespd->ibpd;
 810 }
 811
 812
 813 /**
 814  * nes_dealloc_pd
 815  */
 816 static int nes_dealloc_pd(struct ib_pd *ibpd)
 817 {
 818         struct nes_ucontext *nesucontext;
 819         struct nes_pd *nespd = to_nespd(ibpd);
 820         struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
 821         struct nes_device *nesdev = nesvnic->nesdev;
 822         struct nes_adapter *nesadapter = nesdev->nesadapter;
 823
 824         if ((ibpd->uobject) && (ibpd->uobject->context)) {
 825                 nesucontext = to_nesucontext(ibpd->uobject->context);
 826                 nes_debug(NES_DBG_PD, "Clearing bit %u from allocated doorbells\n",
 827                                 nespd->mmap_db_index);
 828                 clear_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
 829                 nesucontext->mmap_db_index[nespd->mmap_db_index] = 0;
 830                 if (nesucontext->first_free_db > nespd->mmap_db_index) {
 831                         nesucontext->first_free_db = nespd->mmap_db_index;
 832                 }
 833         }
 834
 835         nes_debug(NES_DBG_PD, "Deallocating PD%u structure located @%p.\n",
 836                         nespd->pd_id, nespd);
 837         nes_free_resource(nesadapter, nesadapter->allocated_pds,
 838                         (nespd->pd_id-nesadapter->base_pd)>>(PAGE_SHIFT-12));
 839         kfree(nespd);
 840
 841         return 0;
 842 }
 843
 844
 845 /**
 846  * nes_create_ah
 847  */
 848 static struct ib_ah *nes_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
 849 {
 850         return ERR_PTR(-ENOSYS);
 851 }
 852
 853
 854 /**
 855  * nes_destroy_ah
 856  */
 857 static int nes_destroy_ah(struct ib_ah *ah)
 858 {
 859         return -ENOSYS;
 860 }
 861
 862
 863 /**
 864  * nes_get_encoded_size
 865  */
 866 static inline u8 nes_get_encoded_size(int *size)
 867 {
 868         u8 encoded_size = 0;
 869         if (*size <= 32) {
 870                 *size = 32;
 871                 encoded_size = 1;
 872         } else if (*size <= 128) {
 873                 *size = 128;
 874                 encoded_size = 2;
 875         } else if (*size <= 512) {
 876                 *size = 512;
 877                 encoded_size = 3;
 878         }
 879         return (encoded_size);
 880 }
 881
 882
 883
 884 /**
 885  * nes_setup_virt_qp
 886  */
 887 static int nes_setup_virt_qp(struct nes_qp *nesqp, struct nes_pbl *nespbl,
 888                 struct nes_vnic *nesvnic, int sq_size, int rq_size)
 889 {
 890         unsigned long flags;
 891         void *mem;
 892         __le64 *pbl = NULL;
 893         __le64 *tpbl;
 894         __le64 *pblbuffer;
 895         struct nes_device *nesdev = nesvnic->nesdev;
 896         struct nes_adapter *nesadapter = nesdev->nesadapter;
 897         u32 pbl_entries;
 898         u8 rq_pbl_entries;
 899         u8 sq_pbl_entries;
 900
 901         pbl_entries = nespbl->pbl_size >> 3;
 902         nes_debug(NES_DBG_QP, "Userspace PBL, pbl_size=%u, pbl_entries = %d pbl_vbase=%p, pbl_pbase=%lx\n",
 903                         nespbl->pbl_size, pbl_entries,
 904                         (void *)nespbl->pbl_vbase,
 905                         (unsigned long) nespbl->pbl_pbase);
 906         pbl = (__le64 *) nespbl->pbl_vbase; /* points to first pbl entry */
 907         /* now lets set the sq_vbase as well as rq_vbase addrs we will assign */
 908         /* the first pbl to be fro the rq_vbase... */
 909         rq_pbl_entries = (rq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
 910         sq_pbl_entries = (sq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
 911         nesqp->hwqp.sq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
 912         if (!nespbl->page) {
 913                 nes_debug(NES_DBG_QP, "QP nespbl->page is NULL \n");
 914                 kfree(nespbl);
 915                 return -ENOMEM;
 916         }
 917
 918         nesqp->hwqp.sq_vbase = kmap(nespbl->page);
 919         nesqp->page = nespbl->page;
 920         if (!nesqp->hwqp.sq_vbase) {
 921                 nes_debug(NES_DBG_QP, "QP sq_vbase kmap failed\n");
 922                 kfree(nespbl);
 923                 return -ENOMEM;
 924         }
 925
 926         /* Now to get to sq.. we need to calculate how many */
 927         /* PBL entries were used by the rq.. */
 928         pbl += sq_pbl_entries;
 929         nesqp->hwqp.rq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
 930         /* nesqp->hwqp.rq_vbase = bus_to_virt(*pbl); */
 931         /*nesqp->hwqp.rq_vbase = phys_to_virt(*pbl); */
 932
 933         nes_debug(NES_DBG_QP, "QP sq_vbase= %p sq_pbase=%lx rq_vbase=%p rq_pbase=%lx\n",
 934                   nesqp->hwqp.sq_vbase, (unsigned long) nesqp->hwqp.sq_pbase,
 935                   nesqp->hwqp.rq_vbase, (unsigned long) nesqp->hwqp.rq_pbase);
 936         spin_lock_irqsave(&nesadapter->pbl_lock, flags);
 937         if (!nesadapter->free_256pbl) {
 938                 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
 939                                 nespbl->pbl_pbase);
 940                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
 941                 kunmap(nesqp->page);
 942                 kfree(nespbl);
 943                 return -ENOMEM;
 944         }
 945         nesadapter->free_256pbl--;
 946         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
 947
 948         nesqp->pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 256, &nesqp->pbl_pbase);
 949         pblbuffer = nesqp->pbl_vbase;
 950         if (!nesqp->pbl_vbase) {
 951                 /* memory allocated during nes_reg_user_mr() */
 952                 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
 953                                     nespbl->pbl_pbase);
 954                 kfree(nespbl);
 955                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
 956                 nesadapter->free_256pbl++;
 957                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
 958                 kunmap(nesqp->page);
 959                 return -ENOMEM;
 960         }
 961         memset(nesqp->pbl_vbase, 0, 256);
 962         /* fill in the page address in the pbl buffer.. */
 963         tpbl = pblbuffer + 16;
 964         pbl = (__le64 *)nespbl->pbl_vbase;
 965         while (sq_pbl_entries--)
 966                 *tpbl++ = *pbl++;
 967         tpbl = pblbuffer;
 968         while (rq_pbl_entries--)
 969                 *tpbl++ = *pbl++;
 970
 971         /* done with memory allocated during nes_reg_user_mr() */
 972         pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
 973                             nespbl->pbl_pbase);
 974         kfree(nespbl);
 975
 976         nesqp->qp_mem_size =
 977                         max((u32)sizeof(struct nes_qp_context), ((u32)256)) + 256;     /* this is Q2 */
 978         /* Round up to a multiple of a page */
 979         nesqp->qp_mem_size += PAGE_SIZE - 1;
 980         nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
 981
 982         mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
 983                         &nesqp->hwqp.q2_pbase);
 984
 985         if (!mem) {
 986                 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase);
 987                 nesqp->pbl_vbase = NULL;
 988                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
 989                 nesadapter->free_256pbl++;
 990                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
 991                 kunmap(nesqp->page);
 992                 return -ENOMEM;
 993         }
 994         nesqp->sq_kmapped = 1;
 995         nesqp->hwqp.q2_vbase = mem;
 996         mem += 256;
 997         memset(nesqp->hwqp.q2_vbase, 0, 256);
 998         nesqp->nesqp_context = mem;
 999         memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
1000         nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
1001
1002         return 0;
1003 }
1004
1005
1006 /**
1007  * nes_setup_mmap_qp
1008  */
1009 static int nes_setup_mmap_qp(struct nes_qp *nesqp, struct nes_vnic *nesvnic,
1010                 int sq_size, int rq_size)
1011 {
1012         void *mem;
1013         struct nes_device *nesdev = nesvnic->nesdev;
1014
1015         nesqp->qp_mem_size = (sizeof(struct nes_hw_qp_wqe) * sq_size) +
1016                         (sizeof(struct nes_hw_qp_wqe) * rq_size) +
1017                         max((u32)sizeof(struct nes_qp_context), ((u32)256)) +
1018                         256; /* this is Q2 */
1019         /* Round up to a multiple of a page */
1020         nesqp->qp_mem_size += PAGE_SIZE - 1;
1021         nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
1022
1023         mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1024                         &nesqp->hwqp.sq_pbase);
1025         if (!mem)
1026                 return -ENOMEM;
1027         nes_debug(NES_DBG_QP, "PCI consistent memory for "
1028                         "host descriptor rings located @ %p (pa = 0x%08lX.) size = %u.\n",
1029                         mem, (unsigned long)nesqp->hwqp.sq_pbase, nesqp->qp_mem_size);
1030
1031         memset(mem, 0, nesqp->qp_mem_size);
1032
1033         nesqp->hwqp.sq_vbase = mem;
1034         mem += sizeof(struct nes_hw_qp_wqe) * sq_size;
1035
1036         nesqp->hwqp.rq_vbase = mem;
1037         nesqp->hwqp.rq_pbase = nesqp->hwqp.sq_pbase +
1038                         sizeof(struct nes_hw_qp_wqe) * sq_size;
1039         mem += sizeof(struct nes_hw_qp_wqe) * rq_size;
1040
1041         nesqp->hwqp.q2_vbase = mem;
1042         nesqp->hwqp.q2_pbase = nesqp->hwqp.rq_pbase +
1043                         sizeof(struct nes_hw_qp_wqe) * rq_size;
1044         mem += 256;
1045         memset(nesqp->hwqp.q2_vbase, 0, 256);
1046
1047         nesqp->nesqp_context = mem;
1048         nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
1049         memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
1050         return 0;
1051 }
1052
1053
1054 /**
1055  * nes_free_qp_mem() is to free up the qp's pci_alloc_consistent() memory.
1056  */
1057 static inline void nes_free_qp_mem(struct nes_device *nesdev,
1058                 struct nes_qp *nesqp, int virt_wqs)
1059 {
1060         unsigned long flags;
1061         struct nes_adapter *nesadapter = nesdev->nesadapter;
1062         if (!virt_wqs) {
1063                 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1064                                 nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase);
1065         }else {
1066                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1067                 nesadapter->free_256pbl++;
1068                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1069                 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size, nesqp->hwqp.q2_vbase, nesqp->hwqp.q2_pbase);
1070                 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase );
1071                 nesqp->pbl_vbase = NULL;
1072                 if (nesqp->sq_kmapped) {
1073                         nesqp->sq_kmapped = 0;
1074                         kunmap(nesqp->page);
1075                 }
1076         }
1077 }
1078
1079
1080 /**
1081  * nes_create_qp
1082  */
1083 static struct ib_qp *nes_create_qp(struct ib_pd *ibpd,
1084                 struct ib_qp_init_attr *init_attr, struct ib_udata *udata)
1085 {
1086         u64 u64temp= 0;
1087         u64 u64nesqp = 0;
1088         struct nes_pd *nespd = to_nespd(ibpd);
1089         struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
1090         struct nes_device *nesdev = nesvnic->nesdev;
1091         struct nes_adapter *nesadapter = nesdev->nesadapter;
1092         struct nes_qp *nesqp;
1093         struct nes_cq *nescq;
1094         struct nes_ucontext *nes_ucontext;
1095         struct nes_hw_cqp_wqe *cqp_wqe;
1096         struct nes_cqp_request *cqp_request;
1097         struct nes_create_qp_req req;
1098         struct nes_create_qp_resp uresp;
1099         struct nes_pbl  *nespbl = NULL;
1100         u32 qp_num = 0;
1101         u32 opcode = 0;
1102         /* u32 counter = 0; */
1103         void *mem;
1104         unsigned long flags;
1105         int ret;
1106         int err;
1107         int virt_wqs = 0;
1108         int sq_size;
1109         int rq_size;
1110         u8 sq_encoded_size;
1111         u8 rq_encoded_size;
1112         /* int counter; */
1113
1114         if (init_attr->create_flags)
1115                 return ERR_PTR(-EINVAL);
1116
1117         atomic_inc(&qps_created);
1118         switch (init_attr->qp_type) {
1119                 case IB_QPT_RC:
1120                         if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) {
1121                                 init_attr->cap.max_inline_data = 0;
1122                         } else {
1123                                 init_attr->cap.max_inline_data = 64;
1124                         }
1125                         sq_size = init_attr->cap.max_send_wr;
1126                         rq_size = init_attr->cap.max_recv_wr;
1127
1128                         /* check if the encoded sizes are OK or not... */
1129                         sq_encoded_size = nes_get_encoded_size(&sq_size);
1130                         rq_encoded_size = nes_get_encoded_size(&rq_size);
1131
1132                         if ((!sq_encoded_size) || (!rq_encoded_size)) {
1133                                 nes_debug(NES_DBG_QP, "ERROR bad rq (%u) or sq (%u) size\n",
1134                                                 rq_size, sq_size);
1135                                 return ERR_PTR(-EINVAL);
1136                         }
1137
1138                         init_attr->cap.max_send_wr = sq_size -2;
1139                         init_attr->cap.max_recv_wr = rq_size -1;
1140                         nes_debug(NES_DBG_QP, "RQ size=%u, SQ Size=%u\n", rq_size, sq_size);
1141
1142                         ret = nes_alloc_resource(nesadapter, nesadapter->allocated_qps,
1143                                         nesadapter->max_qp, &qp_num, &nesadapter->next_qp, NES_RESOURCE_QP);
1144                         if (ret) {
1145                                 return ERR_PTR(ret);
1146                         }
1147
1148                         /* Need 512 (actually now 1024) byte alignment on this structure */
1149                         mem = kzalloc(sizeof(*nesqp)+NES_SW_CONTEXT_ALIGN-1, GFP_KERNEL);
1150                         if (!mem) {
1151                                 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1152                                 nes_debug(NES_DBG_QP, "Unable to allocate QP\n");
1153                                 return ERR_PTR(-ENOMEM);
1154                         }
1155                         u64nesqp = (unsigned long)mem;
1156                         u64nesqp += ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1157                         u64temp = ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1158                         u64nesqp &= ~u64temp;
1159                         nesqp = (struct nes_qp *)(unsigned long)u64nesqp;
1160                         /* nes_debug(NES_DBG_QP, "nesqp=%p, allocated buffer=%p.  Rounded to closest %u\n",
1161                                         nesqp, mem, NES_SW_CONTEXT_ALIGN); */
1162                         nesqp->allocated_buffer = mem;
1163
1164                         if (udata) {
1165                                 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_create_qp_req))) {
1166                                         nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1167                                         kfree(nesqp->allocated_buffer);
1168                                         nes_debug(NES_DBG_QP, "ib_copy_from_udata() Failed \n");
1169                                         return ERR_PTR(-EFAULT);
1170                                 }
1171                                 if (req.user_wqe_buffers) {
1172                                         virt_wqs = 1;
1173                                 }
1174                                 if (req.user_qp_buffer)
1175                                         nesqp->nesuqp_addr = req.user_qp_buffer;
1176                                 if ((ibpd->uobject) && (ibpd->uobject->context)) {
1177                                         nesqp->user_mode = 1;
1178                                         nes_ucontext = to_nesucontext(ibpd->uobject->context);
1179                                         if (virt_wqs) {
1180                                                 err = 1;
1181                                                 list_for_each_entry(nespbl, &nes_ucontext->qp_reg_mem_list, list) {
1182                                                         if (nespbl->user_base == (unsigned long )req.user_wqe_buffers) {
1183                                                                 list_del(&nespbl->list);
1184                                                                 err = 0;
1185                                                                 nes_debug(NES_DBG_QP, "Found PBL for virtual QP. nespbl=%p. user_base=0x%lx\n",
1186                                                                           nespbl, nespbl->user_base);
1187                                                                 break;
1188                                                         }
1189                                                 }
1190                                                 if (err) {
1191                                                         nes_debug(NES_DBG_QP, "Didn't Find PBL for virtual QP. address = %llx.\n",
1192                                                                   (long long unsigned int)req.user_wqe_buffers);
1193                                                         nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1194                                                         kfree(nesqp->allocated_buffer);
1195                                                         return ERR_PTR(-EFAULT);
1196                                                 }
1197                                         }
1198
1199                                         nes_ucontext = to_nesucontext(ibpd->uobject->context);
1200                                         nesqp->mmap_sq_db_index =
1201                                                 find_next_zero_bit(nes_ucontext->allocated_wqs,
1202                                                                    NES_MAX_USER_WQ_REGIONS, nes_ucontext->first_free_wq);
1203                                         /* nes_debug(NES_DBG_QP, "find_first_zero_biton wqs returned %u\n",
1204                                                         nespd->mmap_db_index); */
1205                                         if (nesqp->mmap_sq_db_index >= NES_MAX_USER_WQ_REGIONS) {
1206                                                 nes_debug(NES_DBG_QP,
1207                                                           "db index > max user regions, failing create QP\n");
1208                                                 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1209                                                 if (virt_wqs) {
1210                                                         pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1211                                                                             nespbl->pbl_pbase);
1212                                                         kfree(nespbl);
1213                                                 }
1214                                                 kfree(nesqp->allocated_buffer);
1215                                                 return ERR_PTR(-ENOMEM);
1216                                         }
1217                                         set_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1218                                         nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = nesqp;
1219                                         nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index + 1;
1220                                 } else {
1221                                         nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1222                                         kfree(nesqp->allocated_buffer);
1223                                         return ERR_PTR(-EFAULT);
1224                                 }
1225                         }
1226                         err = (!virt_wqs) ? nes_setup_mmap_qp(nesqp, nesvnic, sq_size, rq_size) :
1227                                         nes_setup_virt_qp(nesqp, nespbl, nesvnic, sq_size, rq_size);
1228                         if (err) {
1229                                 nes_debug(NES_DBG_QP,
1230                                           "error geting qp mem code = %d\n", err);
1231                                 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1232                                 kfree(nesqp->allocated_buffer);
1233                                 return ERR_PTR(-ENOMEM);
1234                         }
1235
1236                         nesqp->hwqp.sq_size = sq_size;
1237                         nesqp->hwqp.sq_encoded_size = sq_encoded_size;
1238                         nesqp->hwqp.sq_head = 1;
1239                         nesqp->hwqp.rq_size = rq_size;
1240                         nesqp->hwqp.rq_encoded_size = rq_encoded_size;
1241                         /* nes_debug(NES_DBG_QP, "nesqp->nesqp_context_pbase = %p\n",
1242                                         (void *)nesqp->nesqp_context_pbase);
1243                         */
1244                         nesqp->hwqp.qp_id = qp_num;
1245                         nesqp->ibqp.qp_num = nesqp->hwqp.qp_id;
1246                         nesqp->nespd = nespd;
1247
1248                         nescq = to_nescq(init_attr->send_cq);
1249                         nesqp->nesscq = nescq;
1250                         nescq = to_nescq(init_attr->recv_cq);
1251                         nesqp->nesrcq = nescq;
1252
1253                         nesqp->nesqp_context->misc |= cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) <<
1254                                         NES_QPCONTEXT_MISC_PCI_FCN_SHIFT);
1255                         nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.rq_encoded_size <<
1256                                         NES_QPCONTEXT_MISC_RQ_SIZE_SHIFT);
1257                         nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.sq_encoded_size <<
1258                                         NES_QPCONTEXT_MISC_SQ_SIZE_SHIFT);
1259                         if (!udata) {
1260                                 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_PRIV_EN);
1261                                 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_FAST_REGISTER_EN);
1262                         }
1263                         nesqp->nesqp_context->cqs = cpu_to_le32(nesqp->nesscq->hw_cq.cq_number +
1264                                         ((u32)nesqp->nesrcq->hw_cq.cq_number << 16));
1265                         u64temp = (u64)nesqp->hwqp.sq_pbase;
1266                         nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1267                         nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1268
1269
1270                         if (!virt_wqs) {
1271                                 u64temp = (u64)nesqp->hwqp.sq_pbase;
1272                                 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1273                                 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1274                                 u64temp = (u64)nesqp->hwqp.rq_pbase;
1275                                 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1276                                 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1277                         } else {
1278                                 u64temp = (u64)nesqp->pbl_pbase;
1279                                 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1280                                 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1281                         }
1282
1283                         /* nes_debug(NES_DBG_QP, "next_qp_nic_index=%u, using nic_index=%d\n",
1284                                         nesvnic->next_qp_nic_index,
1285                                         nesvnic->qp_nic_index[nesvnic->next_qp_nic_index]); */
1286                         spin_lock_irqsave(&nesdev->cqp.lock, flags);
1287                         nesqp->nesqp_context->misc2 |= cpu_to_le32(
1288                                         (u32)nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] <<
1289                                         NES_QPCONTEXT_MISC2_NIC_INDEX_SHIFT);
1290                         nesvnic->next_qp_nic_index++;
1291                         if ((nesvnic->next_qp_nic_index > 3) ||
1292                                         (nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] == 0xf)) {
1293                                 nesvnic->next_qp_nic_index = 0;
1294                         }
1295                         spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
1296
1297                         nesqp->nesqp_context->pd_index_wscale |= cpu_to_le32((u32)nesqp->nespd->pd_id << 16);
1298                         u64temp = (u64)nesqp->hwqp.q2_pbase;
1299                         nesqp->nesqp_context->q2_addr_low = cpu_to_le32((u32)u64temp);
1300                         nesqp->nesqp_context->q2_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1301                         nesqp->nesqp_context->aeq_token_low =  cpu_to_le32((u32)((unsigned long)(nesqp)));
1302                         nesqp->nesqp_context->aeq_token_high =  cpu_to_le32((u32)(upper_32_bits((unsigned long)(nesqp))));
1303                         nesqp->nesqp_context->ird_ord_sizes = cpu_to_le32(NES_QPCONTEXT_ORDIRD_ALSMM |
1304                                         NES_QPCONTEXT_ORDIRD_AAH |
1305                                         ((((u32)nesadapter->max_irrq_wr) <<
1306                                         NES_QPCONTEXT_ORDIRD_IRDSIZE_SHIFT) & NES_QPCONTEXT_ORDIRD_IRDSIZE_MASK));
1307                         if (disable_mpa_crc) {
1308                                 nes_debug(NES_DBG_QP, "Disabling MPA crc checking due to module option.\n");
1309                                 nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32(NES_QPCONTEXT_ORDIRD_RNMC);
1310                         }
1311
1312
1313                         /* Create the QP */
1314                         cqp_request = nes_get_cqp_request(nesdev);
1315                         if (cqp_request == NULL) {
1316                                 nes_debug(NES_DBG_QP, "Failed to get a cqp_request\n");
1317                                 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1318                                 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1319                                 kfree(nesqp->allocated_buffer);
1320                                 return ERR_PTR(-ENOMEM);
1321                         }
1322                         cqp_request->waiting = 1;
1323                         cqp_wqe = &cqp_request->cqp_wqe;
1324
1325                         if (!virt_wqs) {
1326                                 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP |
1327                                         NES_CQP_QP_IWARP_STATE_IDLE;
1328                         } else {
1329                                 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP | NES_CQP_QP_VIRT_WQS |
1330                                         NES_CQP_QP_IWARP_STATE_IDLE;
1331                         }
1332                         opcode |= NES_CQP_QP_CQS_VALID;
1333                         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1334                         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1335                         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
1336
1337                         u64temp = (u64)nesqp->nesqp_context_pbase;
1338                         set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp);
1339
1340                         atomic_set(&cqp_request->refcount, 2);
1341                         nes_post_cqp_request(nesdev, cqp_request);
1342
1343                         /* Wait for CQP */
1344                         nes_debug(NES_DBG_QP, "Waiting for create iWARP QP%u to complete.\n",
1345                                         nesqp->hwqp.qp_id);
1346                         ret = wait_event_timeout(cqp_request->waitq,
1347                                         (cqp_request->request_done != 0), NES_EVENT_TIMEOUT);
1348                         nes_debug(NES_DBG_QP, "Create iwarp QP%u completed, wait_event_timeout ret=%u,"
1349                                         " nesdev->cqp_head = %u, nesdev->cqp.sq_tail = %u,"
1350                                         " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1351                                         nesqp->hwqp.qp_id, ret, nesdev->cqp.sq_head, nesdev->cqp.sq_tail,
1352                                         cqp_request->major_code, cqp_request->minor_code);
1353                         if ((!ret) || (cqp_request->major_code)) {
1354                                 nes_put_cqp_request(nesdev, cqp_request);
1355                                 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1356                                 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1357                                 kfree(nesqp->allocated_buffer);
1358                                 if (!ret) {
1359                                         return ERR_PTR(-ETIME);
1360                                 } else {
1361                                         return ERR_PTR(-EIO);
1362                                 }
1363                         }
1364
1365                         nes_put_cqp_request(nesdev, cqp_request);
1366
1367                         if (ibpd->uobject) {
1368                                 uresp.mmap_sq_db_index = nesqp->mmap_sq_db_index;
1369                                 uresp.mmap_rq_db_index = 0;
1370                                 uresp.actual_sq_size = sq_size;
1371                                 uresp.actual_rq_size = rq_size;
1372                                 uresp.qp_id = nesqp->hwqp.qp_id;
1373                                 uresp.nes_drv_opt = nes_drv_opt;
1374                                 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
1375                                         nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1376                                         nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1377                                         kfree(nesqp->allocated_buffer);
1378                                         return ERR_PTR(-EFAULT);
1379                                 }
1380                         }
1381
1382                         nes_debug(NES_DBG_QP, "QP%u structure located @%p.Size = %u.\n",
1383                                         nesqp->hwqp.qp_id, nesqp, (u32)sizeof(*nesqp));
1384                         spin_lock_init(&nesqp->lock);
1385                         nes_add_ref(&nesqp->ibqp);
1386                         break;
1387                 default:
1388                         nes_debug(NES_DBG_QP, "Invalid QP type: %d\n", init_attr->qp_type);
1389                         return ERR_PTR(-EINVAL);
1390         }
1391
1392         nesqp->sig_all = (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR);
1393         init_timer(&nesqp->terminate_timer);
1394         nesqp->terminate_timer.function = nes_terminate_timeout;
1395         nesqp->terminate_timer.data = (unsigned long)nesqp;
1396
1397         /* update the QP table */
1398         nesdev->nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = nesqp;
1399         nes_debug(NES_DBG_QP, "netdev refcnt=%u\n",
1400                         netdev_refcnt_read(nesvnic->netdev));
1401
1402         return &nesqp->ibqp;
1403 }
1404
1405 /**
1406  * nes_clean_cq
1407  */
1408 static void nes_clean_cq(struct nes_qp *nesqp, struct nes_cq *nescq)
1409 {
1410         u32 cq_head;
1411         u32 lo;
1412         u32 hi;
1413         u64 u64temp;
1414         unsigned long flags = 0;
1415
1416         spin_lock_irqsave(&nescq->lock, flags);
1417
1418         cq_head = nescq->hw_cq.cq_head;
1419         while (le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_VALID) {
1420                 rmb();
1421                 lo = le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
1422                 hi = le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX]);
1423                 u64temp = (((u64)hi) << 32) | ((u64)lo);
1424                 u64temp &= ~(NES_SW_CONTEXT_ALIGN-1);
1425                 if (u64temp == (u64)(unsigned long)nesqp) {
1426                         /* Zero the context value so cqe will be ignored */
1427                         nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX] = 0;
1428                         nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX] = 0;
1429                 }
1430
1431                 if (++cq_head >= nescq->hw_cq.cq_size)
1432                         cq_head = 0;
1433         }
1434
1435         spin_unlock_irqrestore(&nescq->lock, flags);
1436 }
1437
1438
1439 /**
1440  * nes_destroy_qp
1441  */
1442 static int nes_destroy_qp(struct ib_qp *ibqp)
1443 {
1444         struct nes_qp *nesqp = to_nesqp(ibqp);
1445         struct nes_ucontext *nes_ucontext;
1446         struct ib_qp_attr attr;
1447         struct iw_cm_id *cm_id;
1448         struct iw_cm_event cm_event;
1449         int ret = 0;
1450
1451         atomic_inc(&sw_qps_destroyed);
1452         nesqp->destroyed = 1;
1453
1454         /* Blow away the connection if it exists. */
1455         if (nesqp->ibqp_state >= IB_QPS_INIT && nesqp->ibqp_state <= IB_QPS_RTS) {
1456                 /* if (nesqp->ibqp_state == IB_QPS_RTS) { */
1457                 attr.qp_state = IB_QPS_ERR;
1458                 nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL);
1459         }
1460
1461         if (((nesqp->ibqp_state == IB_QPS_INIT) ||
1462                         (nesqp->ibqp_state == IB_QPS_RTR)) && (nesqp->cm_id)) {
1463                 cm_id = nesqp->cm_id;
1464                 cm_event.event = IW_CM_EVENT_CONNECT_REPLY;
1465                 cm_event.status = -ETIMEDOUT;
1466                 cm_event.local_addr = cm_id->local_addr;
1467                 cm_event.remote_addr = cm_id->remote_addr;
1468                 cm_event.private_data = NULL;
1469                 cm_event.private_data_len = 0;
1470
1471                 nes_debug(NES_DBG_QP, "Generating a CM Timeout Event for "
1472                                 "QP%u. cm_id = %p, refcount = %u. \n",
1473                                 nesqp->hwqp.qp_id, cm_id, atomic_read(&nesqp->refcount));
1474
1475                 cm_id->rem_ref(cm_id);
1476                 ret = cm_id->event_handler(cm_id, &cm_event);
1477                 if (ret)
1478                         nes_debug(NES_DBG_QP, "OFA CM event_handler returned, ret=%d\n", ret);
1479         }
1480
1481         if (nesqp->user_mode) {
1482                 if ((ibqp->uobject)&&(ibqp->uobject->context)) {
1483                         nes_ucontext = to_nesucontext(ibqp->uobject->context);
1484                         clear_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1485                         nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = NULL;
1486                         if (nes_ucontext->first_free_wq > nesqp->mmap_sq_db_index) {
1487                                 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index;
1488                         }
1489                 }
1490                 if (nesqp->pbl_pbase && nesqp->sq_kmapped) {
1491                         nesqp->sq_kmapped = 0;
1492                         kunmap(nesqp->page);
1493                 }
1494         } else {
1495                 /* Clean any pending completions from the cq(s) */
1496                 if (nesqp->nesscq)
1497                         nes_clean_cq(nesqp, nesqp->nesscq);
1498
1499                 if ((nesqp->nesrcq) && (nesqp->nesrcq != nesqp->nesscq))
1500                         nes_clean_cq(nesqp, nesqp->nesrcq);
1501         }
1502         nes_rem_ref(&nesqp->ibqp);
1503         return 0;
1504 }
1505
1506
1507 /**
1508  * nes_create_cq
1509  */
1510 static struct ib_cq *nes_create_cq(struct ib_device *ibdev,
1511                                    const struct ib_cq_init_attr *attr,
1512                                    struct ib_ucontext *context,
1513                                    struct ib_udata *udata)
1514 {
1515         int entries = attr->cqe;
1516         u64 u64temp;
1517         struct nes_vnic *nesvnic = to_nesvnic(ibdev);
1518         struct nes_device *nesdev = nesvnic->nesdev;
1519         struct nes_adapter *nesadapter = nesdev->nesadapter;
1520         struct nes_cq *nescq;
1521         struct nes_ucontext *nes_ucontext = NULL;
1522         struct nes_cqp_request *cqp_request;
1523         void *mem = NULL;
1524         struct nes_hw_cqp_wqe *cqp_wqe;
1525         struct nes_pbl *nespbl = NULL;
1526         struct nes_create_cq_req req;
1527         struct nes_create_cq_resp resp;
1528         u32 cq_num = 0;
1529         u32 opcode = 0;
1530         u32 pbl_entries = 1;
1531         int err;
1532         unsigned long flags;
1533         int ret;
1534
1535         if (attr->flags)
1536                 return ERR_PTR(-EINVAL);
1537
1538         if (entries > nesadapter->max_cqe)
1539                 return ERR_PTR(-EINVAL);
1540
1541         err = nes_alloc_resource(nesadapter, nesadapter->allocated_cqs,
1542                         nesadapter->max_cq, &cq_num, &nesadapter->next_cq, NES_RESOURCE_CQ);
1543         if (err) {
1544                 return ERR_PTR(err);
1545         }
1546
1547         nescq = kzalloc(sizeof(struct nes_cq), GFP_KERNEL);
1548         if (!nescq) {
1549                 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1550                 nes_debug(NES_DBG_CQ, "Unable to allocate nes_cq struct\n");
1551                 return ERR_PTR(-ENOMEM);
1552         }
1553
1554         nescq->hw_cq.cq_size = max(entries + 1, 5);
1555         nescq->hw_cq.cq_number = cq_num;
1556         nescq->ibcq.cqe = nescq->hw_cq.cq_size - 1;
1557
1558
1559         if (context) {
1560                 nes_ucontext = to_nesucontext(context);
1561                 if (ib_copy_from_udata(&req, udata, sizeof (struct nes_create_cq_req))) {
1562                         nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1563                         kfree(nescq);
1564                         return ERR_PTR(-EFAULT);
1565                 }
1566                 nesvnic->mcrq_ucontext = nes_ucontext;
1567                 nes_ucontext->mcrqf = req.mcrqf;
1568                 if (nes_ucontext->mcrqf) {
1569                         if (nes_ucontext->mcrqf & 0x80000000)
1570                                 nescq->hw_cq.cq_number = nesvnic->nic.qp_id + 28 + 2 * ((nes_ucontext->mcrqf & 0xf) - 1);
1571                         else if (nes_ucontext->mcrqf & 0x40000000)
1572                                 nescq->hw_cq.cq_number = nes_ucontext->mcrqf & 0xffff;
1573                         else
1574                                 nescq->hw_cq.cq_number = nesvnic->mcrq_qp_id + nes_ucontext->mcrqf-1;
1575                         nescq->mcrqf = nes_ucontext->mcrqf;
1576                         nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1577                 }
1578                 nes_debug(NES_DBG_CQ, "CQ Virtual Address = %08lX, size = %u.\n",
1579                                 (unsigned long)req.user_cq_buffer, entries);
1580                 err = 1;
1581                 list_for_each_entry(nespbl, &nes_ucontext->cq_reg_mem_list, list) {
1582                         if (nespbl->user_base == (unsigned long )req.user_cq_buffer) {
1583                                 list_del(&nespbl->list);
1584                                 err = 0;
1585                                 nes_debug(NES_DBG_CQ, "Found PBL for virtual CQ. nespbl=%p.\n",
1586                                                 nespbl);
1587                                 break;
1588                         }
1589                 }
1590                 if (err) {
1591                         nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1592                         kfree(nescq);
1593                         return ERR_PTR(-EFAULT);
1594                 }
1595
1596                 pbl_entries = nespbl->pbl_size >> 3;
1597                 nescq->cq_mem_size = 0;
1598         } else {
1599                 nescq->cq_mem_size = nescq->hw_cq.cq_size * sizeof(struct nes_hw_cqe);
1600                 nes_debug(NES_DBG_CQ, "Attempting to allocate pci memory (%u entries, %u bytes) for CQ%u.\n",
1601                                 entries, nescq->cq_mem_size, nescq->hw_cq.cq_number);
1602
1603                 /* allocate the physical buffer space */
1604                 mem = pci_zalloc_consistent(nesdev->pcidev, nescq->cq_mem_size,
1605                                             &nescq->hw_cq.cq_pbase);
1606                 if (!mem) {
1607                         printk(KERN_ERR PFX "Unable to allocate pci memory for cq\n");
1608                         nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1609                         kfree(nescq);
1610                         return ERR_PTR(-ENOMEM);
1611                 }
1612
1613                 nescq->hw_cq.cq_vbase = mem;
1614                 nescq->hw_cq.cq_head = 0;
1615                 nes_debug(NES_DBG_CQ, "CQ%u virtual address @ %p, phys = 0x%08X\n",
1616                                 nescq->hw_cq.cq_number, nescq->hw_cq.cq_vbase,
1617                                 (u32)nescq->hw_cq.cq_pbase);
1618         }
1619
1620         nescq->hw_cq.ce_handler = nes_iwarp_ce_handler;
1621         spin_lock_init(&nescq->lock);
1622
1623         /* send CreateCQ request to CQP */
1624         cqp_request = nes_get_cqp_request(nesdev);
1625         if (cqp_request == NULL) {
1626                 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1627                 if (!context)
1628                         pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1629                                         nescq->hw_cq.cq_pbase);
1630                 else {
1631                         pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1632                                             nespbl->pbl_vbase, nespbl->pbl_pbase);
1633                         kfree(nespbl);
1634                 }
1635
1636                 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1637                 kfree(nescq);
1638                 return ERR_PTR(-ENOMEM);
1639         }
1640         cqp_request->waiting = 1;
1641         cqp_wqe = &cqp_request->cqp_wqe;
1642
1643         opcode = NES_CQP_CREATE_CQ | NES_CQP_CQ_CEQ_VALID |
1644                         NES_CQP_CQ_CHK_OVERFLOW |
1645                         NES_CQP_CQ_CEQE_MASK | ((u32)nescq->hw_cq.cq_size << 16);
1646
1647         spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1648
1649         if (pbl_entries != 1) {
1650                 if (pbl_entries > 32) {
1651                         /* use 4k pbl */
1652                         nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 4k PBL\n", pbl_entries);
1653                         if (nesadapter->free_4kpbl == 0) {
1654                                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1655                                 nes_free_cqp_request(nesdev, cqp_request);
1656                                 if (!context)
1657                                         pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1658                                                         nescq->hw_cq.cq_pbase);
1659                                 else {
1660                                         pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1661                                                             nespbl->pbl_vbase, nespbl->pbl_pbase);
1662                                         kfree(nespbl);
1663                                 }
1664                                 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1665                                 kfree(nescq);
1666                                 return ERR_PTR(-ENOMEM);
1667                         } else {
1668                                 opcode |= (NES_CQP_CQ_VIRT | NES_CQP_CQ_4KB_CHUNK);
1669                                 nescq->virtual_cq = 2;
1670                                 nesadapter->free_4kpbl--;
1671                         }
1672                 } else {
1673                         /* use 256 byte pbl */
1674                         nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 256 byte PBL\n", pbl_entries);
1675                         if (nesadapter->free_256pbl == 0) {
1676                                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1677                                 nes_free_cqp_request(nesdev, cqp_request);
1678                                 if (!context)
1679                                         pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1680                                                         nescq->hw_cq.cq_pbase);
1681                                 else {
1682                                         pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1683                                                             nespbl->pbl_vbase, nespbl->pbl_pbase);
1684                                         kfree(nespbl);
1685                                 }
1686                                 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1687                                 kfree(nescq);
1688                                 return ERR_PTR(-ENOMEM);
1689                         } else {
1690                                 opcode |= NES_CQP_CQ_VIRT;
1691                                 nescq->virtual_cq = 1;
1692                                 nesadapter->free_256pbl--;
1693                         }
1694                 }
1695         }
1696
1697         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1698
1699         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1700         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1701         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1702                         (nescq->hw_cq.cq_number | ((u32)nesdev->ceq_index << 16)));
1703
1704         if (context) {
1705                 if (pbl_entries != 1)
1706                         u64temp = (u64)nespbl->pbl_pbase;
1707                 else
1708                         u64temp = le64_to_cpu(nespbl->pbl_vbase[0]);
1709                 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX,
1710                                 nes_ucontext->mmap_db_index[0]);
1711         } else {
1712                 u64temp = (u64)nescq->hw_cq.cq_pbase;
1713                 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX] = 0;
1714         }
1715         set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_PBL_LOW_IDX, u64temp);
1716         cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] = 0;
1717         u64temp = (u64)(unsigned long)&nescq->hw_cq;
1718         cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_LOW_IDX] =
1719                         cpu_to_le32((u32)(u64temp >> 1));
1720         cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] =
1721                         cpu_to_le32(((u32)((u64temp) >> 33)) & 0x7FFFFFFF);
1722
1723         atomic_set(&cqp_request->refcount, 2);
1724         nes_post_cqp_request(nesdev, cqp_request);
1725
1726         /* Wait for CQP */
1727         nes_debug(NES_DBG_CQ, "Waiting for create iWARP CQ%u to complete.\n",
1728                         nescq->hw_cq.cq_number);
1729         ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1730                         NES_EVENT_TIMEOUT * 2);
1731         nes_debug(NES_DBG_CQ, "Create iWARP CQ%u completed, wait_event_timeout ret = %d.\n",
1732                         nescq->hw_cq.cq_number, ret);
1733         if ((!ret) || (cqp_request->major_code)) {
1734                 nes_put_cqp_request(nesdev, cqp_request);
1735                 if (!context)
1736                         pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1737                                         nescq->hw_cq.cq_pbase);
1738                 else {
1739                         pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1740                                             nespbl->pbl_vbase, nespbl->pbl_pbase);
1741                         kfree(nespbl);
1742                 }
1743                 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1744                 kfree(nescq);
1745                 return ERR_PTR(-EIO);
1746         }
1747         nes_put_cqp_request(nesdev, cqp_request);
1748
1749         if (context) {
1750                 /* free the nespbl */
1751                 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1752                                 nespbl->pbl_pbase);
1753                 kfree(nespbl);
1754                 resp.cq_id = nescq->hw_cq.cq_number;
1755                 resp.cq_size = nescq->hw_cq.cq_size;
1756                 resp.mmap_db_index = 0;
1757                 if (ib_copy_to_udata(udata, &resp, sizeof resp - sizeof resp.reserved)) {
1758                         nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1759                         kfree(nescq);
1760                         return ERR_PTR(-EFAULT);
1761                 }
1762         }
1763
1764         return &nescq->ibcq;
1765 }
1766
1767
1768 /**
1769  * nes_destroy_cq
1770  */
1771 static int nes_destroy_cq(struct ib_cq *ib_cq)
1772 {
1773         struct nes_cq *nescq;
1774         struct nes_device *nesdev;
1775         struct nes_vnic *nesvnic;
1776         struct nes_adapter *nesadapter;
1777         struct nes_hw_cqp_wqe *cqp_wqe;
1778         struct nes_cqp_request *cqp_request;
1779         unsigned long flags;
1780         u32 opcode = 0;
1781         int ret;
1782
1783         if (ib_cq == NULL)
1784                 return 0;
1785
1786         nescq = to_nescq(ib_cq);
1787         nesvnic = to_nesvnic(ib_cq->device);
1788         nesdev = nesvnic->nesdev;
1789         nesadapter = nesdev->nesadapter;
1790
1791         nes_debug(NES_DBG_CQ, "Destroy CQ%u\n", nescq->hw_cq.cq_number);
1792
1793         /* Send DestroyCQ request to CQP */
1794         cqp_request = nes_get_cqp_request(nesdev);
1795         if (cqp_request == NULL) {
1796                 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1797                 return -ENOMEM;
1798         }
1799         cqp_request->waiting = 1;
1800         cqp_wqe = &cqp_request->cqp_wqe;
1801         opcode = NES_CQP_DESTROY_CQ | (nescq->hw_cq.cq_size << 16);
1802         spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1803         if (nescq->virtual_cq == 1) {
1804                 nesadapter->free_256pbl++;
1805                 if (nesadapter->free_256pbl > nesadapter->max_256pbl) {
1806                         printk(KERN_ERR PFX "%s: free 256B PBLs(%u) has exceeded the max(%u)\n",
1807                                         __func__, nesadapter->free_256pbl, nesadapter->max_256pbl);
1808                 }
1809         } else if (nescq->virtual_cq == 2) {
1810                 nesadapter->free_4kpbl++;
1811                 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl) {
1812                         printk(KERN_ERR PFX "%s: free 4K PBLs(%u) has exceeded the max(%u)\n",
1813                                         __func__, nesadapter->free_4kpbl, nesadapter->max_4kpbl);
1814                 }
1815                 opcode |= NES_CQP_CQ_4KB_CHUNK;
1816         }
1817
1818         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1819
1820         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1821         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1822         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1823                 (nescq->hw_cq.cq_number | ((u32)PCI_FUNC(nesdev->pcidev->devfn) << 16)));
1824         if (!nescq->mcrqf)
1825                 nes_free_resource(nesadapter, nesadapter->allocated_cqs, nescq->hw_cq.cq_number);
1826
1827         atomic_set(&cqp_request->refcount, 2);
1828         nes_post_cqp_request(nesdev, cqp_request);
1829
1830         /* Wait for CQP */
1831         nes_debug(NES_DBG_CQ, "Waiting for destroy iWARP CQ%u to complete.\n",
1832                         nescq->hw_cq.cq_number);
1833         ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1834                         NES_EVENT_TIMEOUT);
1835         nes_debug(NES_DBG_CQ, "Destroy iWARP CQ%u completed, wait_event_timeout ret = %u,"
1836                         " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1837                         nescq->hw_cq.cq_number, ret, cqp_request->major_code,
1838                         cqp_request->minor_code);
1839         if (!ret) {
1840                 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy timeout expired\n",
1841                                         nescq->hw_cq.cq_number);
1842                 ret = -ETIME;
1843         } else if (cqp_request->major_code) {
1844                 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy failed\n",
1845                                         nescq->hw_cq.cq_number);
1846                 ret = -EIO;
1847         } else {
1848                 ret = 0;
1849         }
1850         nes_put_cqp_request(nesdev, cqp_request);
1851
1852         if (nescq->cq_mem_size)
1853                 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size,
1854                                     nescq->hw_cq.cq_vbase, nescq->hw_cq.cq_pbase);
1855         kfree(nescq);
1856
1857         return ret;
1858 }
1859
1860 /**
1861  * root_256
1862  */
1863 static u32 root_256(struct nes_device *nesdev,
1864                     struct nes_root_vpbl *root_vpbl,
1865                     struct nes_root_vpbl *new_root,
1866                     u16 pbl_count_4k)
1867 {
1868         u64 leaf_pbl;
1869         int i, j, k;
1870
1871         if (pbl_count_4k == 1) {
1872                 new_root->pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
1873                                                 512, &new_root->pbl_pbase);
1874
1875                 if (new_root->pbl_vbase == NULL)
1876                         return 0;
1877
1878                 leaf_pbl = (u64)root_vpbl->pbl_pbase;
1879                 for (i = 0; i < 16; i++) {
1880                         new_root->pbl_vbase[i].pa_low =
1881                                 cpu_to_le32((u32)leaf_pbl);
1882                         new_root->pbl_vbase[i].pa_high =
1883                                 cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
1884                         leaf_pbl += 256;
1885                 }
1886         } else {
1887                 for (i = 3; i >= 0; i--) {
1888                         j = i * 16;
1889                         root_vpbl->pbl_vbase[j] = root_vpbl->pbl_vbase[i];
1890                         leaf_pbl = le32_to_cpu(root_vpbl->pbl_vbase[j].pa_low) +
1891                             (((u64)le32_to_cpu(root_vpbl->pbl_vbase[j].pa_high))
1892                                 << 32);
1893                         for (k = 1; k < 16; k++) {
1894                                 leaf_pbl += 256;
1895                                 root_vpbl->pbl_vbase[j + k].pa_low =
1896                                                 cpu_to_le32((u32)leaf_pbl);
1897                                 root_vpbl->pbl_vbase[j + k].pa_high =
1898                                     cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
1899                         }
1900                 }
1901         }
1902
1903         return 1;
1904 }
1905
1906
1907 /**
1908  * nes_reg_mr
1909  */
1910 static int nes_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd,
1911                 u32 stag, u64 region_length, struct nes_root_vpbl *root_vpbl,
1912                 dma_addr_t single_buffer, u16 pbl_count_4k,
1913                 u16 residual_page_count_4k, int acc, u64 *iova_start,
1914                 u16 *actual_pbl_cnt, u8 *used_4k_pbls)
1915 {
1916         struct nes_hw_cqp_wqe *cqp_wqe;
1917         struct nes_cqp_request *cqp_request;
1918         unsigned long flags;
1919         int ret;
1920         struct nes_adapter *nesadapter = nesdev->nesadapter;
1921         uint pg_cnt = 0;
1922         u16 pbl_count_256 = 0;
1923         u16 pbl_count = 0;
1924         u8  use_256_pbls = 0;
1925         u8  use_4k_pbls = 0;
1926         u16 use_two_level = (pbl_count_4k > 1) ? 1 : 0;
1927         struct nes_root_vpbl new_root = { 0, NULL, NULL };
1928         u32 opcode = 0;
1929         u16 major_code;
1930
1931         /* Register the region with the adapter */
1932         cqp_request = nes_get_cqp_request(nesdev);
1933         if (cqp_request == NULL) {
1934                 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
1935                 return -ENOMEM;
1936         }
1937         cqp_request->waiting = 1;
1938         cqp_wqe = &cqp_request->cqp_wqe;
1939
1940         if (pbl_count_4k) {
1941                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1942
1943                 pg_cnt = ((pbl_count_4k - 1) * 512) + residual_page_count_4k;
1944                 pbl_count_256 = (pg_cnt + 31) / 32;
1945                 if (pg_cnt <= 32) {
1946                         if (pbl_count_256 <= nesadapter->free_256pbl)
1947                                 use_256_pbls = 1;
1948                         else if (pbl_count_4k <= nesadapter->free_4kpbl)
1949                                 use_4k_pbls = 1;
1950                 } else if (pg_cnt <= 2048) {
1951                         if (((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) &&
1952                             (nesadapter->free_4kpbl > (nesadapter->max_4kpbl >> 1))) {
1953                                 use_4k_pbls = 1;
1954                         } else if ((pbl_count_256 + 1) <= nesadapter->free_256pbl) {
1955                                 use_256_pbls = 1;
1956                                 use_two_level = 1;
1957                         } else if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
1958                                 use_4k_pbls = 1;
1959                         }
1960                 } else {
1961                         if ((pbl_count_4k + 1) <= nesadapter->free_4kpbl)
1962                                 use_4k_pbls = 1;
1963                 }
1964
1965                 if (use_256_pbls) {
1966                         pbl_count = pbl_count_256;
1967                         nesadapter->free_256pbl -= pbl_count + use_two_level;
1968                 } else if (use_4k_pbls) {
1969                         pbl_count =  pbl_count_4k;
1970                         nesadapter->free_4kpbl -= pbl_count + use_two_level;
1971                 } else {
1972                         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1973                         nes_debug(NES_DBG_MR, "Out of Pbls\n");
1974                         nes_free_cqp_request(nesdev, cqp_request);
1975                         return -ENOMEM;
1976                 }
1977
1978                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1979         }
1980
1981         if (use_256_pbls && use_two_level) {
1982                 if (root_256(nesdev, root_vpbl, &new_root, pbl_count_4k) == 1) {
1983                         if (new_root.pbl_pbase != 0)
1984                                 root_vpbl = &new_root;
1985                 } else {
1986                         spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1987                         nesadapter->free_256pbl += pbl_count_256 + use_two_level;
1988                         use_256_pbls = 0;
1989
1990                         if (pbl_count_4k == 1)
1991                                 use_two_level = 0;
1992                         pbl_count = pbl_count_4k;
1993
1994                         if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
1995                                 nesadapter->free_4kpbl -= pbl_count + use_two_level;
1996                                 use_4k_pbls = 1;
1997                         }
1998                         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1999
2000                         if (use_4k_pbls == 0)
2001                                 return -ENOMEM;
2002                 }
2003         }
2004
2005         opcode = NES_CQP_REGISTER_STAG | NES_CQP_STAG_RIGHTS_LOCAL_READ |
2006                                         NES_CQP_STAG_VA_TO | NES_CQP_STAG_MR;
2007         if (acc & IB_ACCESS_LOCAL_WRITE)
2008                 opcode |= NES_CQP_STAG_RIGHTS_LOCAL_WRITE;
2009         if (acc & IB_ACCESS_REMOTE_WRITE)
2010                 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_REM_ACC_EN;
2011         if (acc & IB_ACCESS_REMOTE_READ)
2012                 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_READ | NES_CQP_STAG_REM_ACC_EN;
2013         if (acc & IB_ACCESS_MW_BIND)
2014                 opcode |= NES_CQP_STAG_RIGHTS_WINDOW_BIND | NES_CQP_STAG_REM_ACC_EN;
2015
2016         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2017         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
2018         set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, *iova_start);
2019         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, region_length);
2020
2021         cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] =
2022                         cpu_to_le32((u32)(region_length >> 8) & 0xff000000);
2023         cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |=
2024                         cpu_to_le32(nespd->pd_id & 0x00007fff);
2025         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
2026
2027         if (pbl_count == 0) {
2028                 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, single_buffer);
2029         } else {
2030                 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, root_vpbl->pbl_pbase);
2031                 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, pbl_count);
2032                 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX, (pg_cnt * 8));
2033
2034                 if (use_4k_pbls)
2035                         cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE);
2036         }
2037         barrier();
2038
2039         atomic_set(&cqp_request->refcount, 2);
2040         nes_post_cqp_request(nesdev, cqp_request);
2041
2042         /* Wait for CQP */
2043         ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
2044                         NES_EVENT_TIMEOUT);
2045         nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
2046                         " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2047                         stag, ret, cqp_request->major_code, cqp_request->minor_code);
2048         major_code = cqp_request->major_code;
2049         nes_put_cqp_request(nesdev, cqp_request);
2050
2051         if ((!ret || major_code) && pbl_count != 0) {
2052                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2053                 if (use_256_pbls)
2054                         nesadapter->free_256pbl += pbl_count + use_two_level;
2055                 else if (use_4k_pbls)
2056                         nesadapter->free_4kpbl += pbl_count + use_two_level;
2057                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2058         }
2059         if (new_root.pbl_pbase)
2060                 pci_free_consistent(nesdev->pcidev, 512, new_root.pbl_vbase,
2061                                     new_root.pbl_pbase);
2062
2063         if (!ret)
2064                 return -ETIME;
2065         else if (major_code)
2066                 return -EIO;
2067
2068         *actual_pbl_cnt = pbl_count + use_two_level;
2069         *used_4k_pbls = use_4k_pbls;
2070         return 0;
2071 }
2072
2073
2074 /**
2075  * nes_reg_phys_mr
2076  */
2077 static struct ib_mr *nes_reg_phys_mr(struct ib_pd *ib_pd,
2078                 struct ib_phys_buf *buffer_list, int num_phys_buf, int acc,
2079                 u64 * iova_start)
2080 {
2081         u64 region_length;
2082         struct nes_pd *nespd = to_nespd(ib_pd);
2083         struct nes_vnic *nesvnic = to_nesvnic(ib_pd->device);
2084         struct nes_device *nesdev = nesvnic->nesdev;
2085         struct nes_adapter *nesadapter = nesdev->nesadapter;
2086         struct nes_mr *nesmr;
2087         struct ib_mr *ibmr;
2088         struct nes_vpbl vpbl;
2089         struct nes_root_vpbl root_vpbl;
2090         u32 stag;
2091         u32 i;
2092         unsigned long mask;
2093         u32 stag_index = 0;
2094         u32 next_stag_index = 0;
2095         u32 driver_key = 0;
2096         u32 root_pbl_index = 0;
2097         u32 cur_pbl_index = 0;
2098         int err = 0;
2099         int ret = 0;
2100         u16 pbl_count = 0;
2101         u8 single_page = 1;
2102         u8 stag_key = 0;
2103
2104         region_length = 0;
2105         vpbl.pbl_vbase = NULL;
2106         root_vpbl.pbl_vbase = NULL;
2107         root_vpbl.pbl_pbase = 0;
2108
2109         get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2110         stag_key = (u8)next_stag_index;
2111
2112         driver_key = 0;
2113
2114         next_stag_index >>= 8;
2115         next_stag_index %= nesadapter->max_mr;
2116         if (num_phys_buf > (1024*512)) {
2117                 return ERR_PTR(-E2BIG);
2118         }
2119
2120         if ((buffer_list[0].addr ^ *iova_start) & ~PAGE_MASK)
2121                 return ERR_PTR(-EINVAL);
2122
2123         err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs, nesadapter->max_mr,
2124                         &stag_index, &next_stag_index, NES_RESOURCE_PHYS_MR);
2125         if (err) {
2126                 return ERR_PTR(err);
2127         }
2128
2129         nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2130         if (!nesmr) {
2131                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2132                 return ERR_PTR(-ENOMEM);
2133         }
2134
2135         for (i = 0; i < num_phys_buf; i++) {
2136
2137                 if ((i & 0x01FF) == 0) {
2138                         if (root_pbl_index == 1) {
2139                                 /* Allocate the root PBL */
2140                                 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 8192,
2141                                                 &root_vpbl.pbl_pbase);
2142                                 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2143                                                 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2144                                 if (!root_vpbl.pbl_vbase) {
2145                                         pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2146                                                         vpbl.pbl_pbase);
2147                                         nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2148                                         kfree(nesmr);
2149                                         return ERR_PTR(-ENOMEM);
2150                                 }
2151                                 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024, GFP_KERNEL);
2152                                 if (!root_vpbl.leaf_vpbl) {
2153                                         pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2154                                                         root_vpbl.pbl_pbase);
2155                                         pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2156                                                         vpbl.pbl_pbase);
2157                                         nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2158                                         kfree(nesmr);
2159                                         return ERR_PTR(-ENOMEM);
2160                                 }
2161                                 root_vpbl.pbl_vbase[0].pa_low = cpu_to_le32((u32)vpbl.pbl_pbase);
2162                                 root_vpbl.pbl_vbase[0].pa_high =
2163                                                 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2164                                 root_vpbl.leaf_vpbl[0] = vpbl;
2165                         }
2166                         /* Allocate a 4K buffer for the PBL */
2167                         vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2168                                         &vpbl.pbl_pbase);
2169                         nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%016lX\n",
2170                                         vpbl.pbl_vbase, (unsigned long)vpbl.pbl_pbase);
2171                         if (!vpbl.pbl_vbase) {
2172                                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2173                                 ibmr = ERR_PTR(-ENOMEM);
2174                                 kfree(nesmr);
2175                                 goto reg_phys_err;
2176                         }
2177                         /* Fill in the root table */
2178                         if (1 <= root_pbl_index) {
2179                                 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2180                                                 cpu_to_le32((u32)vpbl.pbl_pbase);
2181                                 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2182                                                 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2183                                 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2184                         }
2185                         root_pbl_index++;
2186                         cur_pbl_index = 0;
2187                 }
2188
2189                 mask = !buffer_list[i].size;
2190                 if (i != 0)
2191                         mask |= buffer_list[i].addr;
2192                 if (i != num_phys_buf - 1)
2193                         mask |= buffer_list[i].addr + buffer_list[i].size;
2194
2195                 if (mask & ~PAGE_MASK) {
2196                         nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2197                         nes_debug(NES_DBG_MR, "Invalid buffer addr or size\n");
2198                         ibmr = ERR_PTR(-EINVAL);
2199                         kfree(nesmr);
2200                         goto reg_phys_err;
2201                 }
2202
2203                 region_length += buffer_list[i].size;
2204                 if ((i != 0) && (single_page)) {
2205                         if ((buffer_list[i-1].addr+PAGE_SIZE) != buffer_list[i].addr)
2206                                 single_page = 0;
2207                 }
2208                 vpbl.pbl_vbase[cur_pbl_index].pa_low = cpu_to_le32((u32)buffer_list[i].addr & PAGE_MASK);
2209                 vpbl.pbl_vbase[cur_pbl_index++].pa_high =
2210                                 cpu_to_le32((u32)((((u64)buffer_list[i].addr) >> 32)));
2211         }
2212
2213         stag = stag_index << 8;
2214         stag |= driver_key;
2215         stag += (u32)stag_key;
2216
2217         nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%016lX,"
2218                         " length = 0x%016lX, index = 0x%08X\n",
2219                         stag, (unsigned long)*iova_start, (unsigned long)region_length, stag_index);
2220
2221         /* Make the leaf PBL the root if only one PBL */
2222         if (root_pbl_index == 1) {
2223                 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2224         }
2225
2226         if (single_page) {
2227                 pbl_count = 0;
2228         } else {
2229                 pbl_count = root_pbl_index;
2230         }
2231         ret = nes_reg_mr(nesdev, nespd, stag, region_length, &root_vpbl,
2232                         buffer_list[0].addr, pbl_count, (u16)cur_pbl_index, acc, iova_start,
2233                         &nesmr->pbls_used, &nesmr->pbl_4k);
2234
2235         if (ret == 0) {
2236                 nesmr->ibmr.rkey = stag;
2237                 nesmr->ibmr.lkey = stag;
2238                 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2239                 ibmr = &nesmr->ibmr;
2240         } else {
2241                 kfree(nesmr);
2242                 ibmr = ERR_PTR(-ENOMEM);
2243         }
2244
2245         reg_phys_err:
2246         /* free the resources */
2247         if (root_pbl_index == 1) {
2248                 /* single PBL case */
2249                 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, vpbl.pbl_pbase);
2250         } else {
2251                 for (i=0; i<root_pbl_index; i++) {
2252                         pci_free_consistent(nesdev->pcidev, 4096, root_vpbl.leaf_vpbl[i].pbl_vbase,
2253                                         root_vpbl.leaf_vpbl[i].pbl_pbase);
2254                 }
2255                 kfree(root_vpbl.leaf_vpbl);
2256                 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2257                                 root_vpbl.pbl_pbase);
2258         }
2259
2260         return ibmr;
2261 }
2262
2263
2264 /**
2265  * nes_get_dma_mr
2266  */
2267 static struct ib_mr *nes_get_dma_mr(struct ib_pd *pd, int acc)
2268 {
2269         struct ib_phys_buf bl;
2270         u64 kva = 0;
2271
2272         nes_debug(NES_DBG_MR, "\n");
2273
2274         bl.size = (u64)0xffffffffffULL;
2275         bl.addr = 0;
2276         return nes_reg_phys_mr(pd, &bl, 1, acc, &kva);
2277 }
2278
2279
2280 /**
2281  * nes_reg_user_mr
2282  */
2283 static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
2284                 u64 virt, int acc, struct ib_udata *udata)
2285 {
2286         u64 iova_start;
2287         __le64 *pbl;
2288         u64 region_length;
2289         dma_addr_t last_dma_addr = 0;
2290         dma_addr_t first_dma_addr = 0;
2291         struct nes_pd *nespd = to_nespd(pd);
2292         struct nes_vnic *nesvnic = to_nesvnic(pd->device);
2293         struct nes_device *nesdev = nesvnic->nesdev;
2294         struct nes_adapter *nesadapter = nesdev->nesadapter;
2295         struct ib_mr *ibmr = ERR_PTR(-EINVAL);
2296         struct scatterlist *sg;
2297         struct nes_ucontext *nes_ucontext;
2298         struct nes_pbl *nespbl;
2299         struct nes_mr *nesmr;
2300         struct ib_umem *region;
2301         struct nes_mem_reg_req req;
2302         struct nes_vpbl vpbl;
2303         struct nes_root_vpbl root_vpbl;
2304         int entry, page_index;
2305         int page_count = 0;
2306         int err, pbl_depth = 0;
2307         int chunk_pages;
2308         int ret;
2309         u32 stag;
2310         u32 stag_index = 0;
2311         u32 next_stag_index;
2312         u32 driver_key;
2313         u32 root_pbl_index = 0;
2314         u32 cur_pbl_index = 0;
2315         u32 skip_pages;
2316         u16 pbl_count;
2317         u8 single_page = 1;
2318         u8 stag_key;
2319         int first_page = 1;
2320
2321         region = ib_umem_get(pd->uobject->context, start, length, acc, 0);
2322         if (IS_ERR(region)) {
2323                 return (struct ib_mr *)region;
2324         }
2325
2326         nes_debug(NES_DBG_MR, "User base = 0x%lX, Virt base = 0x%lX, length = %u,"
2327                         " offset = %u, page size = %u.\n",
2328                         (unsigned long int)start, (unsigned long int)virt, (u32)length,
2329                         ib_umem_offset(region), region->page_size);
2330
2331         skip_pages = ((u32)ib_umem_offset(region)) >> 12;
2332
2333         if (ib_copy_from_udata(&req, udata, sizeof(req))) {
2334                 ib_umem_release(region);
2335                 return ERR_PTR(-EFAULT);
2336         }
2337         nes_debug(NES_DBG_MR, "Memory Registration type = %08X.\n", req.reg_type);
2338
2339         switch (req.reg_type) {
2340                 case IWNES_MEMREG_TYPE_MEM:
2341                         pbl_depth = 0;
2342                         region_length = 0;
2343                         vpbl.pbl_vbase = NULL;
2344                         root_vpbl.pbl_vbase = NULL;
2345                         root_vpbl.pbl_pbase = 0;
2346
2347                         get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2348                         stag_key = (u8)next_stag_index;
2349
2350                         driver_key = next_stag_index & 0x70000000;
2351
2352                         next_stag_index >>= 8;
2353                         next_stag_index %= nesadapter->max_mr;
2354
2355                         err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
2356                                         nesadapter->max_mr, &stag_index, &next_stag_index, NES_RESOURCE_USER_MR);
2357                         if (err) {
2358                                 ib_umem_release(region);
2359                                 return ERR_PTR(err);
2360                         }
2361
2362                         nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2363                         if (!nesmr) {
2364                                 ib_umem_release(region);
2365                                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2366                                 return ERR_PTR(-ENOMEM);
2367                         }
2368                         nesmr->region = region;
2369
2370                         for_each_sg(region->sg_head.sgl, sg, region->nmap, entry) {
2371                                 if (sg_dma_address(sg) & ~PAGE_MASK) {
2372                                         ib_umem_release(region);
2373                                         nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2374                                         nes_debug(NES_DBG_MR, "Unaligned Memory Buffer: 0x%x\n",
2375                                                   (unsigned int) sg_dma_address(sg));
2376                                         ibmr = ERR_PTR(-EINVAL);
2377                                         kfree(nesmr);
2378                                         goto reg_user_mr_err;
2379                                 }
2380
2381                                 if (!sg_dma_len(sg)) {
2382                                         ib_umem_release(region);
2383                                         nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2384                                                           stag_index);
2385                                         nes_debug(NES_DBG_MR, "Invalid Buffer Size\n");
2386                                         ibmr = ERR_PTR(-EINVAL);
2387                                         kfree(nesmr);
2388                                         goto reg_user_mr_err;
2389                                 }
2390
2391                                 region_length += sg_dma_len(sg);
2392                                 chunk_pages = sg_dma_len(sg) >> 12;
2393                                 region_length -= skip_pages << 12;
2394                                 for (page_index = skip_pages; page_index < chunk_pages; page_index++) {
2395                                         skip_pages = 0;
2396                                         if ((page_count != 0) && (page_count << 12) - (ib_umem_offset(region) & (4096 - 1)) >= region->length)
2397                                                 goto enough_pages;
2398                                         if ((page_count&0x01FF) == 0) {
2399                                                 if (page_count >= 1024 * 512) {
2400                                                         ib_umem_release(region);
2401                                                         nes_free_resource(nesadapter,
2402                                                                           nesadapter->allocated_mrs, stag_index);
2403                                                         kfree(nesmr);
2404                                                         ibmr = ERR_PTR(-E2BIG);
2405                                                         goto reg_user_mr_err;
2406                                                 }
2407                                                 if (root_pbl_index == 1) {
2408                                                         root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
2409                                                                         8192, &root_vpbl.pbl_pbase);
2410                                                         nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2411                                                                   root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2412                                                         if (!root_vpbl.pbl_vbase) {
2413                                                                 ib_umem_release(region);
2414                                                                 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2415                                                                                     vpbl.pbl_pbase);
2416                                                                 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2417                                                                                   stag_index);
2418                                                                 kfree(nesmr);
2419                                                                 ibmr = ERR_PTR(-ENOMEM);
2420                                                                 goto reg_user_mr_err;
2421                                                         }
2422                                                         root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024,
2423                                                                         GFP_KERNEL);
2424                                                         if (!root_vpbl.leaf_vpbl) {
2425                                                                 ib_umem_release(region);
2426                                                                 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2427                                                                                     root_vpbl.pbl_pbase);
2428                                                                 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2429                                                                                     vpbl.pbl_pbase);
2430                                                                 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2431                                                                                   stag_index);
2432                                                                 kfree(nesmr);
2433                                                                 ibmr = ERR_PTR(-ENOMEM);
2434                                                                 goto reg_user_mr_err;
2435                                                         }
2436                                                         root_vpbl.pbl_vbase[0].pa_low =
2437                                                                         cpu_to_le32((u32)vpbl.pbl_pbase);
2438                                                         root_vpbl.pbl_vbase[0].pa_high =
2439                                                                         cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2440                                                         root_vpbl.leaf_vpbl[0] = vpbl;
2441                                                 }
2442                                                 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2443                                                                 &vpbl.pbl_pbase);
2444                                                 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%08X\n",
2445                                                           vpbl.pbl_vbase, (unsigned int)vpbl.pbl_pbase);
2446                                                 if (!vpbl.pbl_vbase) {
2447                                                         ib_umem_release(region);
2448                                                         nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2449                                                         ibmr = ERR_PTR(-ENOMEM);
2450                                                         kfree(nesmr);
2451                                                         goto reg_user_mr_err;
2452                                                 }
2453                                                 if (1 <= root_pbl_index) {
2454                                                         root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2455                                                                         cpu_to_le32((u32)vpbl.pbl_pbase);
2456                                                         root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2457                                                                         cpu_to_le32((u32)((((u64)vpbl.pbl_pbase)>>32)));
2458                                                         root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2459                                                 }
2460                                                 root_pbl_index++;
2461                                                 cur_pbl_index = 0;
2462                                         }
2463                                         if (single_page) {
2464                                                 if (page_count != 0) {
2465                                                         if ((last_dma_addr+4096) !=
2466                                                                         (sg_dma_address(sg)+
2467                                                                         (page_index*4096)))
2468                                                                 single_page = 0;
2469                                                         last_dma_addr = sg_dma_address(sg)+
2470                                                                         (page_index*4096);
2471                                                 } else {
2472                                                         first_dma_addr = sg_dma_address(sg)+
2473                                                                         (page_index*4096);
2474                                                         last_dma_addr = first_dma_addr;
2475                                                 }
2476                                         }
2477
2478                                         vpbl.pbl_vbase[cur_pbl_index].pa_low =
2479                                                         cpu_to_le32((u32)(sg_dma_address(sg)+
2480                                                         (page_index*4096)));
2481                                         vpbl.pbl_vbase[cur_pbl_index].pa_high =
2482                                                         cpu_to_le32((u32)((((u64)(sg_dma_address(sg)+
2483                                                         (page_index*4096))) >> 32)));
2484                                         cur_pbl_index++;
2485                                         page_count++;
2486                                 }
2487                         }
2488
2489                         enough_pages:
2490                         nes_debug(NES_DBG_MR, "calculating stag, stag_index=0x%08x, driver_key=0x%08x,"
2491                                         " stag_key=0x%08x\n",
2492                                         stag_index, driver_key, stag_key);
2493                         stag = stag_index << 8;
2494                         stag |= driver_key;
2495                         stag += (u32)stag_key;
2496
2497                         iova_start = virt;
2498                         /* Make the leaf PBL the root if only one PBL */
2499                         if (root_pbl_index == 1) {
2500                                 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2501                         }
2502
2503                         if (single_page) {
2504                                 pbl_count = 0;
2505                         } else {
2506                                 pbl_count = root_pbl_index;
2507                                 first_dma_addr = 0;
2508                         }
2509                         nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%08X, length = 0x%08X,"
2510                                         " index = 0x%08X, region->length=0x%08llx, pbl_count = %u\n",
2511                                         stag, (unsigned int)iova_start,
2512                                         (unsigned int)region_length, stag_index,
2513                                         (unsigned long long)region->length, pbl_count);
2514                         ret = nes_reg_mr(nesdev, nespd, stag, region->length, &root_vpbl,
2515                                          first_dma_addr, pbl_count, (u16)cur_pbl_index, acc,
2516                                          &iova_start, &nesmr->pbls_used, &nesmr->pbl_4k);
2517
2518                         nes_debug(NES_DBG_MR, "ret=%d\n", ret);
2519
2520                         if (ret == 0) {
2521                                 nesmr->ibmr.rkey = stag;
2522                                 nesmr->ibmr.lkey = stag;
2523                                 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2524                                 ibmr = &nesmr->ibmr;
2525                         } else {
2526                                 ib_umem_release(region);
2527                                 kfree(nesmr);
2528                                 ibmr = ERR_PTR(-ENOMEM);
2529                         }
2530
2531                         reg_user_mr_err:
2532                         /* free the resources */
2533                         if (root_pbl_index == 1) {
2534                                 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2535                                                 vpbl.pbl_pbase);
2536                         } else {
2537                                 for (page_index=0; page_index<root_pbl_index; page_index++) {
2538                                         pci_free_consistent(nesdev->pcidev, 4096,
2539                                                         root_vpbl.leaf_vpbl[page_index].pbl_vbase,
2540                                                         root_vpbl.leaf_vpbl[page_index].pbl_pbase);
2541                                 }
2542                                 kfree(root_vpbl.leaf_vpbl);
2543                                 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2544                                                 root_vpbl.pbl_pbase);
2545                         }
2546
2547                         nes_debug(NES_DBG_MR, "Leaving, ibmr=%p", ibmr);
2548
2549                         return ibmr;
2550                 case IWNES_MEMREG_TYPE_QP:
2551                 case IWNES_MEMREG_TYPE_CQ:
2552                         if (!region->length) {
2553                                 nes_debug(NES_DBG_MR, "Unable to register zero length region for CQ\n");
2554                                 ib_umem_release(region);
2555                                 return ERR_PTR(-EINVAL);
2556                         }
2557                         nespbl = kzalloc(sizeof(*nespbl), GFP_KERNEL);
2558                         if (!nespbl) {
2559                                 nes_debug(NES_DBG_MR, "Unable to allocate PBL\n");
2560                                 ib_umem_release(region);
2561                                 return ERR_PTR(-ENOMEM);
2562                         }
2563                         nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2564                         if (!nesmr) {
2565                                 ib_umem_release(region);
2566                                 kfree(nespbl);
2567                                 nes_debug(NES_DBG_MR, "Unable to allocate nesmr\n");
2568                                 return ERR_PTR(-ENOMEM);
2569                         }
2570                         nesmr->region = region;
2571                         nes_ucontext = to_nesucontext(pd->uobject->context);
2572                         pbl_depth = region->length >> 12;
2573                         pbl_depth += (region->length & (4096-1)) ? 1 : 0;
2574                         nespbl->pbl_size = pbl_depth*sizeof(u64);
2575                         if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2576                                 nes_debug(NES_DBG_MR, "Attempting to allocate QP PBL memory");
2577                         } else {
2578                                 nes_debug(NES_DBG_MR, "Attempting to allocate CP PBL memory");
2579                         }
2580
2581                         nes_debug(NES_DBG_MR, " %u bytes, %u entries.\n",
2582                                         nespbl->pbl_size, pbl_depth);
2583                         pbl = pci_alloc_consistent(nesdev->pcidev, nespbl->pbl_size,
2584                                         &nespbl->pbl_pbase);
2585                         if (!pbl) {
2586                                 ib_umem_release(region);
2587                                 kfree(nesmr);
2588                                 kfree(nespbl);
2589                                 nes_debug(NES_DBG_MR, "Unable to allocate PBL memory\n");
2590                                 return ERR_PTR(-ENOMEM);
2591                         }
2592
2593                         nespbl->pbl_vbase = (u64 *)pbl;
2594                         nespbl->user_base = start;
2595                         nes_debug(NES_DBG_MR, "Allocated PBL memory, %u bytes, pbl_pbase=%lx,"
2596                                         " pbl_vbase=%p user_base=0x%lx\n",
2597                                   nespbl->pbl_size, (unsigned long) nespbl->pbl_pbase,
2598                                   (void *) nespbl->pbl_vbase, nespbl->user_base);
2599
2600                         for_each_sg(region->sg_head.sgl, sg, region->nmap, entry) {
2601                                 chunk_pages = sg_dma_len(sg) >> 12;
2602                                 chunk_pages += (sg_dma_len(sg) & (4096-1)) ? 1 : 0;
2603                                 if (first_page) {
2604                                         nespbl->page = sg_page(sg);
2605                                         first_page = 0;
2606                                 }
2607
2608                                 for (page_index = 0; page_index < chunk_pages; page_index++) {
2609                                         ((__le32 *)pbl)[0] = cpu_to_le32((u32)
2610                                                         (sg_dma_address(sg)+
2611                                                         (page_index*4096)));
2612                                         ((__le32 *)pbl)[1] = cpu_to_le32(((u64)
2613                                                         (sg_dma_address(sg)+
2614                                                         (page_index*4096)))>>32);
2615                                         nes_debug(NES_DBG_MR, "pbl=%p, *pbl=0x%016llx, 0x%08x%08x\n", pbl,
2616                                                   (unsigned long long)*pbl,
2617                                                   le32_to_cpu(((__le32 *)pbl)[1]), le32_to_cpu(((__le32 *)pbl)[0]));
2618                                         pbl++;
2619                                 }
2620                         }
2621
2622                         if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2623                                 list_add_tail(&nespbl->list, &nes_ucontext->qp_reg_mem_list);
2624                         } else {
2625                                 list_add_tail(&nespbl->list, &nes_ucontext->cq_reg_mem_list);
2626                         }
2627                         nesmr->ibmr.rkey = -1;
2628                         nesmr->ibmr.lkey = -1;
2629                         nesmr->mode = req.reg_type;
2630                         return &nesmr->ibmr;
2631         }
2632
2633         ib_umem_release(region);
2634         return ERR_PTR(-ENOSYS);
2635 }
2636
2637
2638 /**
2639  * nes_dereg_mr
2640  */
2641 static int nes_dereg_mr(struct ib_mr *ib_mr)
2642 {
2643         struct nes_mr *nesmr = to_nesmr(ib_mr);
2644         struct nes_vnic *nesvnic = to_nesvnic(ib_mr->device);
2645         struct nes_device *nesdev = nesvnic->nesdev;
2646         struct nes_adapter *nesadapter = nesdev->nesadapter;
2647         struct nes_hw_cqp_wqe *cqp_wqe;
2648         struct nes_cqp_request *cqp_request;
2649         unsigned long flags;
2650         int ret;
2651         u16 major_code;
2652         u16 minor_code;
2653
2654
2655         if (nesmr->pages)
2656                 pci_free_consistent(nesdev->pcidev,
2657                                     nesmr->max_pages * sizeof(u64),
2658                                     nesmr->pages,
2659                                     nesmr->paddr);
2660
2661         if (nesmr->region) {
2662                 ib_umem_release(nesmr->region);
2663         }
2664         if (nesmr->mode != IWNES_MEMREG_TYPE_MEM) {
2665                 kfree(nesmr);
2666                 return 0;
2667         }
2668
2669         /* Deallocate the region with the adapter */
2670
2671         cqp_request = nes_get_cqp_request(nesdev);
2672         if (cqp_request == NULL) {
2673                 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
2674                 return -ENOMEM;
2675         }
2676         cqp_request->waiting = 1;
2677         cqp_wqe = &cqp_request->cqp_wqe;
2678
2679         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2680         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2681                         NES_CQP_DEALLOCATE_STAG | NES_CQP_STAG_VA_TO |
2682                         NES_CQP_STAG_DEALLOC_PBLS | NES_CQP_STAG_MR);
2683         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ib_mr->rkey);
2684
2685         atomic_set(&cqp_request->refcount, 2);
2686         nes_post_cqp_request(nesdev, cqp_request);
2687
2688         /* Wait for CQP */
2689         nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X completed\n", ib_mr->rkey);
2690         ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2691                         NES_EVENT_TIMEOUT);
2692         nes_debug(NES_DBG_MR, "Deallocate STag 0x%08X completed, wait_event_timeout ret = %u,"
2693                         " CQP Major:Minor codes = 0x%04X:0x%04X\n",
2694                         ib_mr->rkey, ret, cqp_request->major_code, cqp_request->minor_code);
2695
2696         major_code = cqp_request->major_code;
2697         minor_code = cqp_request->minor_code;
2698
2699         nes_put_cqp_request(nesdev, cqp_request);
2700
2701         if (!ret) {
2702                 nes_debug(NES_DBG_MR, "Timeout waiting to destroy STag,"
2703                                 " ib_mr=%p, rkey = 0x%08X\n",
2704                                 ib_mr, ib_mr->rkey);
2705                 return -ETIME;
2706         } else if (major_code) {
2707                 nes_debug(NES_DBG_MR, "Error (0x%04X:0x%04X) while attempting"
2708                                 " to destroy STag, ib_mr=%p, rkey = 0x%08X\n",
2709                                 major_code, minor_code, ib_mr, ib_mr->rkey);
2710                 return -EIO;
2711         }
2712
2713         if (nesmr->pbls_used != 0) {
2714                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2715                 if (nesmr->pbl_4k) {
2716                         nesadapter->free_4kpbl += nesmr->pbls_used;
2717                         if (nesadapter->free_4kpbl > nesadapter->max_4kpbl)
2718                                 printk(KERN_ERR PFX "free 4KB PBLs(%u) has "
2719                                         "exceeded the max(%u)\n",
2720                                         nesadapter->free_4kpbl,
2721                                         nesadapter->max_4kpbl);
2722                 } else {
2723                         nesadapter->free_256pbl += nesmr->pbls_used;
2724                         if (nesadapter->free_256pbl > nesadapter->max_256pbl)
2725                                 printk(KERN_ERR PFX "free 256B PBLs(%u) has "
2726                                         "exceeded the max(%u)\n",
2727                                         nesadapter->free_256pbl,
2728                                         nesadapter->max_256pbl);
2729                 }
2730                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2731         }
2732         nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2733                         (ib_mr->rkey & 0x0fffff00) >> 8);
2734
2735         kfree(nesmr);
2736
2737         return 0;
2738 }
2739
2740
2741 /**
2742  * show_rev
2743  */
2744 static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
2745                         char *buf)
2746 {
2747         struct nes_ib_device *nesibdev =
2748                         container_of(dev, struct nes_ib_device, ibdev.dev);
2749         struct nes_vnic *nesvnic = nesibdev->nesvnic;
2750
2751         nes_debug(NES_DBG_INIT, "\n");
2752         return sprintf(buf, "%x\n", nesvnic->nesdev->nesadapter->hw_rev);
2753 }
2754
2755
2756 /**
2757  * show_fw_ver
2758  */
2759 static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr,
2760                            char *buf)
2761 {
2762         struct nes_ib_device *nesibdev =
2763                         container_of(dev, struct nes_ib_device, ibdev.dev);
2764         struct nes_vnic *nesvnic = nesibdev->nesvnic;
2765
2766         nes_debug(NES_DBG_INIT, "\n");
2767         return sprintf(buf, "%u.%u\n",
2768                 (nesvnic->nesdev->nesadapter->firmware_version >> 16),
2769                 (nesvnic->nesdev->nesadapter->firmware_version & 0x000000ff));
2770 }
2771
2772
2773 /**
2774  * show_hca
2775  */
2776 static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
2777                         char *buf)
2778 {
2779         nes_debug(NES_DBG_INIT, "\n");
2780         return sprintf(buf, "NES020\n");
2781 }
2782
2783
2784 /**
2785  * show_board
2786  */
2787 static ssize_t show_board(struct device *dev, struct device_attribute *attr,
2788                           char *buf)
2789 {
2790         nes_debug(NES_DBG_INIT, "\n");
2791         return sprintf(buf, "%.*s\n", 32, "NES020 Board ID");
2792 }
2793
2794
2795 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
2796 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
2797 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
2798 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
2799
2800 static struct device_attribute *nes_dev_attributes[] = {
2801         &dev_attr_hw_rev,
2802         &dev_attr_fw_ver,
2803         &dev_attr_hca_type,
2804         &dev_attr_board_id
2805 };
2806
2807
2808 /**
2809  * nes_query_qp
2810  */
2811 static int nes_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2812                 int attr_mask, struct ib_qp_init_attr *init_attr)
2813 {
2814         struct nes_qp *nesqp = to_nesqp(ibqp);
2815
2816         nes_debug(NES_DBG_QP, "\n");
2817
2818         attr->qp_access_flags = 0;
2819         attr->cap.max_send_wr = nesqp->hwqp.sq_size;
2820         attr->cap.max_recv_wr = nesqp->hwqp.rq_size;
2821         attr->cap.max_recv_sge = 1;
2822         if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA)
2823                 attr->cap.max_inline_data = 0;
2824         else
2825                 attr->cap.max_inline_data = 64;
2826
2827         init_attr->event_handler = nesqp->ibqp.event_handler;
2828         init_attr->qp_context = nesqp->ibqp.qp_context;
2829         init_attr->send_cq = nesqp->ibqp.send_cq;
2830         init_attr->recv_cq = nesqp->ibqp.recv_cq;
2831         init_attr->srq = nesqp->ibqp.srq;
2832         init_attr->cap = attr->cap;
2833
2834         return 0;
2835 }
2836
2837
2838 /**
2839  * nes_hw_modify_qp
2840  */
2841 int nes_hw_modify_qp(struct nes_device *nesdev, struct nes_qp *nesqp,
2842                 u32 next_iwarp_state, u32 termlen, u32 wait_completion)
2843 {
2844         struct nes_hw_cqp_wqe *cqp_wqe;
2845         /* struct iw_cm_id *cm_id = nesqp->cm_id; */
2846         /* struct iw_cm_event cm_event; */
2847         struct nes_cqp_request *cqp_request;
2848         int ret;
2849         u16 major_code;
2850
2851         nes_debug(NES_DBG_MOD_QP, "QP%u, refcount=%d\n",
2852                         nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
2853
2854         cqp_request = nes_get_cqp_request(nesdev);
2855         if (cqp_request == NULL) {
2856                 nes_debug(NES_DBG_MOD_QP, "Failed to get a cqp_request.\n");
2857                 return -ENOMEM;
2858         }
2859         if (wait_completion) {
2860                 cqp_request->waiting = 1;
2861         } else {
2862                 cqp_request->waiting = 0;
2863         }
2864         cqp_wqe = &cqp_request->cqp_wqe;
2865
2866         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2867                         NES_CQP_MODIFY_QP | NES_CQP_QP_TYPE_IWARP | next_iwarp_state);
2868         nes_debug(NES_DBG_MOD_QP, "using next_iwarp_state=%08x, wqe_words=%08x\n",
2869                         next_iwarp_state, le32_to_cpu(cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX]));
2870         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2871         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
2872         set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, (u64)nesqp->nesqp_context_pbase);
2873
2874         /* If sending a terminate message, fill in the length (in words) */
2875         if (((next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) == NES_CQP_QP_IWARP_STATE_TERMINATE) &&
2876             !(next_iwarp_state & NES_CQP_QP_TERM_DONT_SEND_TERM_MSG)) {
2877                 termlen = ((termlen + 3) >> 2) << NES_CQP_OP_TERMLEN_SHIFT;
2878                 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_NEW_MSS_IDX, termlen);
2879         }
2880
2881         atomic_set(&cqp_request->refcount, 2);
2882         nes_post_cqp_request(nesdev, cqp_request);
2883
2884         /* Wait for CQP */
2885         if (wait_completion) {
2886                 /* nes_debug(NES_DBG_MOD_QP, "Waiting for modify iWARP QP%u to complete.\n",
2887                                 nesqp->hwqp.qp_id); */
2888                 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2889                                 NES_EVENT_TIMEOUT);
2890                 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u completed, wait_event_timeout ret=%u, "
2891                                 "CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2892                                 nesqp->hwqp.qp_id, ret, cqp_request->major_code, cqp_request->minor_code);
2893                 major_code = cqp_request->major_code;
2894                 if (major_code) {
2895                         nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u failed"
2896                                         "CQP Major:Minor codes = 0x%04X:0x%04X, intended next state = 0x%08X.\n",
2897                                         nesqp->hwqp.qp_id, cqp_request->major_code,
2898                                         cqp_request->minor_code, next_iwarp_state);
2899                 }
2900
2901                 nes_put_cqp_request(nesdev, cqp_request);
2902
2903                 if (!ret)
2904                         return -ETIME;
2905                 else if (major_code)
2906                         return -EIO;
2907                 else
2908                         return 0;
2909         } else {
2910                 return 0;
2911         }
2912 }
2913
2914
2915 /**
2916  * nes_modify_qp
2917  */
2918 int nes_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2919                 int attr_mask, struct ib_udata *udata)
2920 {
2921         struct nes_qp *nesqp = to_nesqp(ibqp);
2922         struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
2923         struct nes_device *nesdev = nesvnic->nesdev;
2924         /* u32 cqp_head; */
2925         /* u32 counter; */
2926         u32 next_iwarp_state = 0;
2927         int err;
2928         unsigned long qplockflags;
2929         int ret;
2930         u16 original_last_aeq;
2931         u8 issue_modify_qp = 0;
2932         u8 dont_wait = 0;
2933
2934         nes_debug(NES_DBG_MOD_QP, "QP%u: QP State=%u, cur QP State=%u,"
2935                         " iwarp_state=0x%X, refcount=%d\n",
2936                         nesqp->hwqp.qp_id, attr->qp_state, nesqp->ibqp_state,
2937                         nesqp->iwarp_state, atomic_read(&nesqp->refcount));
2938
2939         spin_lock_irqsave(&nesqp->lock, qplockflags);
2940
2941         nes_debug(NES_DBG_MOD_QP, "QP%u: hw_iwarp_state=0x%X, hw_tcp_state=0x%X,"
2942                         " QP Access Flags=0x%X, attr_mask = 0x%0x\n",
2943                         nesqp->hwqp.qp_id, nesqp->hw_iwarp_state,
2944                         nesqp->hw_tcp_state, attr->qp_access_flags, attr_mask);
2945
2946         if (attr_mask & IB_QP_STATE) {
2947                 switch (attr->qp_state) {
2948                         case IB_QPS_INIT:
2949                                 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = init\n",
2950                                                 nesqp->hwqp.qp_id);
2951                                 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_IDLE) {
2952                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2953                                         return -EINVAL;
2954                                 }
2955                                 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
2956                                 issue_modify_qp = 1;
2957                                 break;
2958                         case IB_QPS_RTR:
2959                                 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rtr\n",
2960                                                 nesqp->hwqp.qp_id);
2961                                 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_IDLE) {
2962                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2963                                         return -EINVAL;
2964                                 }
2965                                 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
2966                                 issue_modify_qp = 1;
2967                                 break;
2968                         case IB_QPS_RTS:
2969                                 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rts\n",
2970                                                 nesqp->hwqp.qp_id);
2971                                 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_RTS) {
2972                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2973                                         return -EINVAL;
2974                                 }
2975                                 if (nesqp->cm_id == NULL) {
2976                                         nes_debug(NES_DBG_MOD_QP, "QP%u: Failing attempt to move QP to RTS without a CM_ID. \n",
2977                                                         nesqp->hwqp.qp_id );
2978                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2979                                         return -EINVAL;
2980                                 }
2981                                 next_iwarp_state = NES_CQP_QP_IWARP_STATE_RTS;
2982                                 if (nesqp->iwarp_state != NES_CQP_QP_IWARP_STATE_RTS)
2983                                         next_iwarp_state |= NES_CQP_QP_CONTEXT_VALID |
2984                                                         NES_CQP_QP_ARP_VALID | NES_CQP_QP_ORD_VALID;
2985                                 issue_modify_qp = 1;
2986                                 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_ESTABLISHED;
2987                                 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_RTS;
2988                                 nesqp->hte_added = 1;
2989                                 break;
2990                         case IB_QPS_SQD:
2991                                 issue_modify_qp = 1;
2992                                 nes_debug(NES_DBG_MOD_QP, "QP%u: new state=closing. SQ head=%u, SQ tail=%u\n",
2993                                                 nesqp->hwqp.qp_id, nesqp->hwqp.sq_head, nesqp->hwqp.sq_tail);
2994                                 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
2995                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2996                                         return 0;
2997                                 } else {
2998                                         if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
2999                                                 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
3000                                                                 " ignored due to current iWARP state\n",
3001                                                                 nesqp->hwqp.qp_id);
3002                                                 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3003                                                 return -EINVAL;
3004                                         }
3005                                         if (nesqp->hw_iwarp_state != NES_AEQE_IWARP_STATE_RTS) {
3006                                                 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
3007                                                                 " already done based on hw state.\n",
3008                                                                 nesqp->hwqp.qp_id);
3009                                                 issue_modify_qp = 0;
3010                                         }
3011                                         switch (nesqp->hw_iwarp_state) {
3012                                                 case NES_AEQE_IWARP_STATE_CLOSING:
3013                                                         next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
3014                                                         break;
3015                                                 case NES_AEQE_IWARP_STATE_TERMINATE:
3016                                                         next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
3017                                                         break;
3018                                                 case NES_AEQE_IWARP_STATE_ERROR:
3019                                                         next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
3020                                                         break;
3021                                                 default:
3022                                                         next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
3023                                                         nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_CLOSING;
3024                                                         break;
3025                                         }
3026                                 }
3027                                 break;
3028                         case IB_QPS_SQE:
3029                                 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = terminate\n",
3030                                                 nesqp->hwqp.qp_id);
3031                                 if (nesqp->iwarp_state>=(u32)NES_CQP_QP_IWARP_STATE_TERMINATE) {
3032                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3033                                         return -EINVAL;
3034                                 }
3035                                 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
3036                                 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
3037                                 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_TERMINATE;
3038                                 issue_modify_qp = 1;
3039                                 break;
3040                         case IB_QPS_ERR:
3041                         case IB_QPS_RESET:
3042                                 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_ERROR) {
3043                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3044                                         return -EINVAL;
3045                                 }
3046                                 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = error\n",
3047                                                 nesqp->hwqp.qp_id);
3048                                 if (nesqp->term_flags)
3049                                         del_timer(&nesqp->terminate_timer);
3050
3051                                 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
3052                                 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
3053                                         if (nesqp->hte_added) {
3054                                                 nes_debug(NES_DBG_MOD_QP, "set CQP_QP_DEL_HTE\n");
3055                                                 next_iwarp_state |= NES_CQP_QP_DEL_HTE;
3056                                                 nesqp->hte_added = 0;
3057                                         }
3058                                 if ((nesqp->hw_tcp_state > NES_AEQE_TCP_STATE_CLOSED) &&
3059                                                 (nesdev->iw_status) &&
3060                                                 (nesqp->hw_tcp_state != NES_AEQE_TCP_STATE_TIME_WAIT)) {
3061                                         next_iwarp_state |= NES_CQP_QP_RESET;
3062                                 } else {
3063                                         nes_debug(NES_DBG_MOD_QP, "QP%u NOT setting NES_CQP_QP_RESET since TCP state = %u\n",
3064                                                         nesqp->hwqp.qp_id, nesqp->hw_tcp_state);
3065                                         dont_wait = 1;
3066                                 }
3067                                 issue_modify_qp = 1;
3068                                 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_ERROR;
3069                                 break;
3070                         default:
3071                                 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3072                                 return -EINVAL;
3073                                 break;
3074                 }
3075
3076                 nesqp->ibqp_state = attr->qp_state;
3077                 nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
3078                 nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
3079                                 nesqp->iwarp_state);
3080         }
3081
3082         if (attr_mask & IB_QP_ACCESS_FLAGS) {
3083                 if (attr->qp_access_flags & IB_ACCESS_LOCAL_WRITE) {
3084                         nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
3085                                         NES_QPCONTEXT_MISC_RDMA_READ_EN);
3086                         issue_modify_qp = 1;
3087                 }
3088                 if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE) {
3089                         nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN);
3090                         issue_modify_qp = 1;
3091                 }
3092                 if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ) {
3093                         nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_READ_EN);
3094                         issue_modify_qp = 1;
3095                 }
3096                 if (attr->qp_access_flags & IB_ACCESS_MW_BIND) {
3097                         nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_WBIND_EN);
3098                         issue_modify_qp = 1;
3099                 }
3100
3101                 if (nesqp->user_mode) {
3102                         nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
3103                                         NES_QPCONTEXT_MISC_RDMA_READ_EN);
3104                         issue_modify_qp = 1;
3105                 }
3106         }
3107
3108         original_last_aeq = nesqp->last_aeq;
3109         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3110
3111         nes_debug(NES_DBG_MOD_QP, "issue_modify_qp=%u\n", issue_modify_qp);
3112
3113         ret = 0;
3114
3115
3116         if (issue_modify_qp) {
3117                 nes_debug(NES_DBG_MOD_QP, "call nes_hw_modify_qp\n");
3118                 ret = nes_hw_modify_qp(nesdev, nesqp, next_iwarp_state, 0, 1);
3119                 if (ret)
3120                         nes_debug(NES_DBG_MOD_QP, "nes_hw_modify_qp (next_iwarp_state = 0x%08X)"
3121                                         " failed for QP%u.\n",
3122                                         next_iwarp_state, nesqp->hwqp.qp_id);
3123
3124         }
3125
3126         if ((issue_modify_qp) && (nesqp->ibqp_state > IB_QPS_RTS)) {
3127                 nes_debug(NES_DBG_MOD_QP, "QP%u Issued ModifyQP refcount (%d),"
3128                                 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3129                                 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3130                                 original_last_aeq, nesqp->last_aeq);
3131                 if (!ret || original_last_aeq != NES_AEQE_AEID_RDMAP_ROE_BAD_LLP_CLOSE) {
3132                         if (dont_wait) {
3133                                 if (nesqp->cm_id && nesqp->hw_tcp_state != 0) {
3134                                         nes_debug(NES_DBG_MOD_QP, "QP%u Queuing fake disconnect for QP refcount (%d),"
3135                                                         " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3136                                                         nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3137                                                         original_last_aeq, nesqp->last_aeq);
3138                                         /* this one is for the cm_disconnect thread */
3139                                         spin_lock_irqsave(&nesqp->lock, qplockflags);
3140                                         nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_CLOSED;
3141                                         nesqp->last_aeq = NES_AEQE_AEID_RESET_SENT;
3142                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3143                                         nes_cm_disconn(nesqp);
3144                                 } else {
3145                                         nes_debug(NES_DBG_MOD_QP, "QP%u No fake disconnect, QP refcount=%d\n",
3146                                                         nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3147                                 }
3148                         } else {
3149                                 spin_lock_irqsave(&nesqp->lock, qplockflags);
3150                                 if (nesqp->cm_id) {
3151                                         /* These two are for the timer thread */
3152                                         if (atomic_inc_return(&nesqp->close_timer_started) == 1) {
3153                                                 nesqp->cm_id->add_ref(nesqp->cm_id);
3154                                                 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3155                                                                 " need ae to finish up, original_last_aeq = 0x%04X."
3156                                                                 " last_aeq = 0x%04X, scheduling timer.\n",
3157                                                                 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3158                                                                 original_last_aeq, nesqp->last_aeq);
3159                                                 schedule_nes_timer(nesqp->cm_node, (struct sk_buff *) nesqp, NES_TIMER_TYPE_CLOSE, 1, 0);
3160                                         }
3161                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3162                                 } else {
3163                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3164                                         nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3165                                                         " need ae to finish up, original_last_aeq = 0x%04X."
3166                                                         " last_aeq = 0x%04X.\n",
3167                                                         nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3168                                                         original_last_aeq, nesqp->last_aeq);
3169                                 }
3170                         }
3171                 } else {
3172                         nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3173                                         " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3174                                         nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3175                                         original_last_aeq, nesqp->last_aeq);
3176                 }
3177         } else {
3178                 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3179                                 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3180                                 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3181                                 original_last_aeq, nesqp->last_aeq);
3182         }
3183
3184         err = 0;
3185
3186         nes_debug(NES_DBG_MOD_QP, "QP%u Leaving, refcount=%d\n",
3187                         nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3188
3189         return err;
3190 }
3191
3192
3193 /**
3194  * nes_muticast_attach
3195  */
3196 static int nes_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3197 {
3198         nes_debug(NES_DBG_INIT, "\n");
3199         return -ENOSYS;
3200 }
3201
3202
3203 /**
3204  * nes_multicast_detach
3205  */
3206 static int nes_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3207 {
3208         nes_debug(NES_DBG_INIT, "\n");
3209         return -ENOSYS;
3210 }
3211
3212
3213 /**
3214  * nes_process_mad
3215  */
3216 static int nes_process_mad(struct ib_device *ibdev, int mad_flags,
3217                 u8 port_num, const struct ib_wc *in_wc, const struct ib_grh *in_grh,
3218                 const struct ib_mad_hdr *in, size_t in_mad_size,
3219                 struct ib_mad_hdr *out, size_t *out_mad_size,
3220                 u16 *out_mad_pkey_index)
3221 {
3222         nes_debug(NES_DBG_INIT, "\n");
3223         return -ENOSYS;
3224 }
3225
3226 static inline void
3227 fill_wqe_sg_send(struct nes_hw_qp_wqe *wqe, struct ib_send_wr *ib_wr, u32 uselkey)
3228 {
3229         int sge_index;
3230         int total_payload_length = 0;
3231         for (sge_index = 0; sge_index < ib_wr->num_sge; sge_index++) {
3232                 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3233                         ib_wr->sg_list[sge_index].addr);
3234                 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_LENGTH0_IDX + (sge_index*4),
3235                         ib_wr->sg_list[sge_index].length);
3236                 if (uselkey)
3237                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4),
3238                                                 (ib_wr->sg_list[sge_index].lkey));
3239                 else
3240                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4), 0);
3241
3242                 total_payload_length += ib_wr->sg_list[sge_index].length;
3243         }
3244         nes_debug(NES_DBG_IW_TX, "UC UC UC, sending total_payload_length=%u \n",
3245                         total_payload_length);
3246         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3247                                 total_payload_length);
3248 }
3249
3250 /**
3251  * nes_post_send
3252  */
3253 static int nes_post_send(struct ib_qp *ibqp, struct ib_send_wr *ib_wr,
3254                 struct ib_send_wr **bad_wr)
3255 {
3256         u64 u64temp;
3257         unsigned long flags = 0;
3258         struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3259         struct nes_device *nesdev = nesvnic->nesdev;
3260         struct nes_qp *nesqp = to_nesqp(ibqp);
3261         struct nes_hw_qp_wqe *wqe;
3262         int err = 0;
3263         u32 qsize = nesqp->hwqp.sq_size;
3264         u32 head;
3265         u32 wqe_misc = 0;
3266         u32 wqe_count = 0;
3267         u32 counter;
3268
3269         if (nesqp->ibqp_state > IB_QPS_RTS) {
3270                 err = -EINVAL;
3271                 goto out;
3272         }
3273
3274         spin_lock_irqsave(&nesqp->lock, flags);
3275
3276         head = nesqp->hwqp.sq_head;
3277
3278         while (ib_wr) {
3279                 /* Check for QP error */
3280                 if (nesqp->term_flags) {
3281                         err = -EINVAL;
3282                         break;
3283                 }
3284
3285                 /* Check for SQ overflow */
3286                 if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
3287                         err = -ENOMEM;
3288                         break;
3289                 }
3290
3291                 wqe = &nesqp->hwqp.sq_vbase[head];
3292                 /* nes_debug(NES_DBG_IW_TX, "processing sq wqe for QP%u at %p, head = %u.\n",
3293                                 nesqp->hwqp.qp_id, wqe, head); */
3294                 nes_fill_init_qp_wqe(wqe, nesqp, head);
3295                 u64temp = (u64)(ib_wr->wr_id);
3296                 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3297                                         u64temp);
3298                 switch (ib_wr->opcode) {
3299                 case IB_WR_SEND:
3300                 case IB_WR_SEND_WITH_INV:
3301                         if (IB_WR_SEND == ib_wr->opcode) {
3302                                 if (ib_wr->send_flags & IB_SEND_SOLICITED)
3303                                         wqe_misc = NES_IWARP_SQ_OP_SENDSE;
3304                                 else
3305                                         wqe_misc = NES_IWARP_SQ_OP_SEND;
3306                         } else {
3307                                 if (ib_wr->send_flags & IB_SEND_SOLICITED)
3308                                         wqe_misc = NES_IWARP_SQ_OP_SENDSEINV;
3309                                 else
3310                                         wqe_misc = NES_IWARP_SQ_OP_SENDINV;
3311
3312                                 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_INV_STAG_LOW_IDX,
3313                                                     ib_wr->ex.invalidate_rkey);
3314                         }
3315
3316                         if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3317                                 err = -EINVAL;
3318                                 break;
3319                         }
3320
3321                         if (ib_wr->send_flags & IB_SEND_FENCE)
3322                                 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3323
3324                         if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3325                             ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3326                              (ib_wr->sg_list[0].length <= 64)) {
3327                                 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3328                                        (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3329                                 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3330                                                     ib_wr->sg_list[0].length);
3331                                 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3332                         } else {
3333                                 fill_wqe_sg_send(wqe, ib_wr, 1);
3334                         }
3335
3336                         break;
3337                 case IB_WR_RDMA_WRITE:
3338                         wqe_misc = NES_IWARP_SQ_OP_RDMAW;
3339                         if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3340                                 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=%u\n",
3341                                           ib_wr->num_sge, nesdev->nesadapter->max_sge);
3342                                 err = -EINVAL;
3343                                 break;
3344                         }
3345
3346                         if (ib_wr->send_flags & IB_SEND_FENCE)
3347                                 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3348
3349                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3350                                             rdma_wr(ib_wr)->rkey);
3351                         set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3352                                             rdma_wr(ib_wr)->remote_addr);
3353
3354                         if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3355                             ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3356                              (ib_wr->sg_list[0].length <= 64)) {
3357                                 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3358                                        (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3359                                 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3360                                                     ib_wr->sg_list[0].length);
3361                                 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3362                         } else {
3363                                 fill_wqe_sg_send(wqe, ib_wr, 1);
3364                         }
3365
3366                         wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX] =
3367                                 wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX];
3368                         break;
3369                 case IB_WR_RDMA_READ:
3370                 case IB_WR_RDMA_READ_WITH_INV:
3371                         /* iWARP only supports 1 sge for RDMA reads */
3372                         if (ib_wr->num_sge > 1) {
3373                                 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=1\n",
3374                                           ib_wr->num_sge);
3375                                 err = -EINVAL;
3376                                 break;
3377                         }
3378                         if (ib_wr->opcode == IB_WR_RDMA_READ) {
3379                                 wqe_misc = NES_IWARP_SQ_OP_RDMAR;
3380                         } else {
3381                                 wqe_misc = NES_IWARP_SQ_OP_RDMAR_LOCINV;
3382                                 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_INV_STAG_LOW_IDX,
3383                                                     ib_wr->ex.invalidate_rkey);
3384                         }
3385
3386                         set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3387                                             rdma_wr(ib_wr)->remote_addr);
3388                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3389                                             rdma_wr(ib_wr)->rkey);
3390                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX,
3391                                             ib_wr->sg_list->length);
3392                         set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX,
3393                                             ib_wr->sg_list->addr);
3394                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX,
3395                                             ib_wr->sg_list->lkey);
3396                         break;
3397                 case IB_WR_LOCAL_INV:
3398                         wqe_misc = NES_IWARP_SQ_OP_LOCINV;
3399                         set_wqe_32bit_value(wqe->wqe_words,
3400                                             NES_IWARP_SQ_LOCINV_WQE_INV_STAG_IDX,
3401                                             ib_wr->ex.invalidate_rkey);
3402                         break;
3403                 case IB_WR_REG_MR:
3404                 {
3405                         struct nes_mr *mr = to_nesmr(reg_wr(ib_wr)->mr);
3406                         int page_shift = ilog2(reg_wr(ib_wr)->mr->page_size);
3407                         int flags = reg_wr(ib_wr)->access;
3408
3409                         if (mr->npages > (NES_4K_PBL_CHUNK_SIZE / sizeof(u64))) {
3410                                 nes_debug(NES_DBG_IW_TX, "SQ_FMR: bad page_list_len\n");
3411                                 err = -EINVAL;
3412                                 break;
3413                         }
3414                         wqe_misc = NES_IWARP_SQ_OP_FAST_REG;
3415                         set_wqe_64bit_value(wqe->wqe_words,
3416                                             NES_IWARP_SQ_FMR_WQE_VA_FBO_LOW_IDX,
3417                                             mr->ibmr.iova);
3418                         set_wqe_32bit_value(wqe->wqe_words,
3419                                             NES_IWARP_SQ_FMR_WQE_LENGTH_LOW_IDX,
3420                                             mr->ibmr.length);
3421                         set_wqe_32bit_value(wqe->wqe_words,
3422                                             NES_IWARP_SQ_FMR_WQE_LENGTH_HIGH_IDX, 0);
3423                         set_wqe_32bit_value(wqe->wqe_words,
3424                                             NES_IWARP_SQ_FMR_WQE_MR_STAG_IDX,
3425                                             reg_wr(ib_wr)->key);
3426
3427                         if (page_shift == 12) {
3428                                 wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_4K;
3429                         } else if (page_shift == 21) {
3430                                 wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_2M;
3431                         } else {
3432                                 nes_debug(NES_DBG_IW_TX, "Invalid page shift,"
3433                                           " ib_wr=%u, max=1\n", ib_wr->num_sge);
3434                                 err = -EINVAL;
3435                                 break;
3436                         }
3437
3438                         /* Set access_flags */
3439                         wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_READ;
3440                         if (flags & IB_ACCESS_LOCAL_WRITE)
3441                                 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_WRITE;
3442
3443                         if (flags & IB_ACCESS_REMOTE_WRITE)
3444                                 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_WRITE;
3445
3446                         if (flags & IB_ACCESS_REMOTE_READ)
3447                                 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_READ;
3448
3449                         if (flags & IB_ACCESS_MW_BIND)
3450                                 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_WINDOW_BIND;
3451
3452                         /* Fill in PBL info: */
3453                         set_wqe_64bit_value(wqe->wqe_words,
3454                                             NES_IWARP_SQ_FMR_WQE_PBL_ADDR_LOW_IDX,
3455                                             mr->paddr);
3456
3457                         set_wqe_32bit_value(wqe->wqe_words,
3458                                             NES_IWARP_SQ_FMR_WQE_PBL_LENGTH_IDX,
3459                                             mr->npages * 8);
3460
3461                         nes_debug(NES_DBG_IW_TX, "SQ_REG_MR: iova_start: %llx, "
3462                                   "length: %d, rkey: %0x, pgl_paddr: %llx, "
3463                                   "page_list_len: %u, wqe_misc: %x\n",
3464                                   (unsigned long long) mr->ibmr.iova,
3465                                   mr->ibmr.length,
3466                                   reg_wr(ib_wr)->key,
3467                                   (unsigned long long) mr->paddr,
3468                                   mr->npages,
3469                                   wqe_misc);
3470                         break;
3471                 }
3472                 default:
3473                         /* error */
3474                         err = -EINVAL;
3475                         break;
3476                 }
3477
3478                 if (err)
3479                         break;
3480
3481                 if ((ib_wr->send_flags & IB_SEND_SIGNALED) || nesqp->sig_all)
3482                         wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
3483
3484                 wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = cpu_to_le32(wqe_misc);
3485
3486                 ib_wr = ib_wr->next;
3487                 head++;
3488                 wqe_count++;
3489                 if (head >= qsize)
3490                         head = 0;
3491
3492         }
3493
3494         nesqp->hwqp.sq_head = head;
3495         barrier();
3496         while (wqe_count) {
3497                 counter = min(wqe_count, ((u32)255));
3498                 wqe_count -= counter;
3499                 nes_write32(nesdev->regs + NES_WQE_ALLOC,
3500                                 (counter << 24) | 0x00800000 | nesqp->hwqp.qp_id);
3501         }
3502
3503         spin_unlock_irqrestore(&nesqp->lock, flags);
3504
3505 out:
3506         if (err)
3507                 *bad_wr = ib_wr;
3508         return err;
3509 }
3510
3511
3512 /**
3513  * nes_post_recv
3514  */
3515 static int nes_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *ib_wr,
3516                 struct ib_recv_wr **bad_wr)
3517 {
3518         u64 u64temp;
3519         unsigned long flags = 0;
3520         struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3521         struct nes_device *nesdev = nesvnic->nesdev;
3522         struct nes_qp *nesqp = to_nesqp(ibqp);
3523         struct nes_hw_qp_wqe *wqe;
3524         int err = 0;
3525         int sge_index;
3526         u32 qsize = nesqp->hwqp.rq_size;
3527         u32 head;
3528         u32 wqe_count = 0;
3529         u32 counter;
3530         u32 total_payload_length;
3531
3532         if (nesqp->ibqp_state > IB_QPS_RTS) {
3533                 err = -EINVAL;
3534                 goto out;
3535         }
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 = -ENOMEM;
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 out:
3599         if (err)
3600                 *bad_wr = ib_wr;
3601         return err;
3602 }
3603
3604
3605 /**
3606  * nes_poll_cq
3607  */
3608 static int nes_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry)
3609 {
3610         u64 u64temp;
3611         u64 wrid;
3612         unsigned long flags = 0;
3613         struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3614         struct nes_device *nesdev = nesvnic->nesdev;
3615         struct nes_cq *nescq = to_nescq(ibcq);
3616         struct nes_qp *nesqp;
3617         struct nes_hw_cqe cqe;
3618         u32 head;
3619         u32 wq_tail = 0;
3620         u32 cq_size;
3621         u32 cqe_count = 0;
3622         u32 wqe_index;
3623         u32 u32temp;
3624         u32 move_cq_head = 1;
3625         u32 err_code;
3626
3627         nes_debug(NES_DBG_CQ, "\n");
3628
3629         spin_lock_irqsave(&nescq->lock, flags);
3630
3631         head = nescq->hw_cq.cq_head;
3632         cq_size = nescq->hw_cq.cq_size;
3633
3634         while (cqe_count < num_entries) {
3635                 if ((le32_to_cpu(nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX]) &
3636                                 NES_CQE_VALID) == 0)
3637                         break;
3638
3639                 /*
3640                  * Make sure we read CQ entry contents *after*
3641                  * we've checked the valid bit.
3642                  */
3643                 rmb();
3644
3645                 cqe = nescq->hw_cq.cq_vbase[head];
3646                 u32temp = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3647                 wqe_index = u32temp & (nesdev->nesadapter->max_qp_wr - 1);
3648                 u32temp &= ~(NES_SW_CONTEXT_ALIGN-1);
3649                 /* parse CQE, get completion context from WQE (either rq or sq) */
3650                 u64temp = (((u64)(le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX])))<<32) |
3651                                 ((u64)u32temp);
3652
3653                 if (u64temp) {
3654                         nesqp = (struct nes_qp *)(unsigned long)u64temp;
3655                         memset(entry, 0, sizeof *entry);
3656                         if (cqe.cqe_words[NES_CQE_ERROR_CODE_IDX] == 0) {
3657                                 entry->status = IB_WC_SUCCESS;
3658                         } else {
3659                                 err_code = le32_to_cpu(cqe.cqe_words[NES_CQE_ERROR_CODE_IDX]);
3660                                 if (NES_IWARP_CQE_MAJOR_DRV == (err_code >> 16)) {
3661                                         entry->status = err_code & 0x0000ffff;
3662
3663                                         /* The rest of the cqe's will be marked as flushed */
3664                                         nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_ERROR_CODE_IDX] =
3665                                                 cpu_to_le32((NES_IWARP_CQE_MAJOR_FLUSH << 16) |
3666                                                             NES_IWARP_CQE_MINOR_FLUSH);
3667                                 } else
3668                                         entry->status = IB_WC_WR_FLUSH_ERR;
3669                         }
3670
3671                         entry->qp = &nesqp->ibqp;
3672                         entry->src_qp = nesqp->hwqp.qp_id;
3673
3674                         if (le32_to_cpu(cqe.cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_SQ) {
3675                                 if (nesqp->skip_lsmm) {
3676                                         nesqp->skip_lsmm = 0;
3677                                         nesqp->hwqp.sq_tail++;
3678                                 }
3679
3680                                 /* Working on a SQ Completion*/
3681                                 wrid = (((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wqe_index].
3682                                                 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_HIGH_IDX]))) << 32) |
3683                                                 ((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wqe_index].
3684                                                 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX])));
3685                                 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3686                                                 wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX]);
3687
3688                                 switch (le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3689                                                 wqe_words[NES_IWARP_SQ_WQE_MISC_IDX]) & 0x3f) {
3690                                         case NES_IWARP_SQ_OP_RDMAW:
3691                                                 nes_debug(NES_DBG_CQ, "Operation = RDMA WRITE.\n");
3692                                                 entry->opcode = IB_WC_RDMA_WRITE;
3693                                                 break;
3694                                         case NES_IWARP_SQ_OP_RDMAR:
3695                                                 nes_debug(NES_DBG_CQ, "Operation = RDMA READ.\n");
3696                                                 entry->opcode = IB_WC_RDMA_READ;
3697                                                 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3698                                                                 wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX]);
3699                                                 break;
3700                                         case NES_IWARP_SQ_OP_SENDINV:
3701                                         case NES_IWARP_SQ_OP_SENDSEINV:
3702                                         case NES_IWARP_SQ_OP_SEND:
3703                                         case NES_IWARP_SQ_OP_SENDSE:
3704                                                 nes_debug(NES_DBG_CQ, "Operation = Send.\n");
3705                                                 entry->opcode = IB_WC_SEND;
3706                                                 break;
3707                                         case NES_IWARP_SQ_OP_LOCINV:
3708                                                 entry->opcode = IB_WC_LOCAL_INV;
3709                                                 break;
3710                                         case NES_IWARP_SQ_OP_FAST_REG:
3711                                                 entry->opcode = IB_WC_REG_MR;
3712                                                 break;
3713                                 }
3714
3715                                 nesqp->hwqp.sq_tail = (wqe_index+1)&(nesqp->hwqp.sq_size - 1);
3716                                 if ((entry->status != IB_WC_SUCCESS) && (nesqp->hwqp.sq_tail != nesqp->hwqp.sq_head)) {
3717                                         move_cq_head = 0;
3718                                         wq_tail = nesqp->hwqp.sq_tail;
3719                                 }
3720                         } else {
3721                                 /* Working on a RQ Completion*/
3722                                 entry->byte_len = le32_to_cpu(cqe.cqe_words[NES_CQE_PAYLOAD_LENGTH_IDX]);
3723                                 wrid = ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wqe_index].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_LOW_IDX]))) |
3724                                         ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wqe_index].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_HIGH_IDX]))<<32);
3725                                         entry->opcode = IB_WC_RECV;
3726
3727                                 nesqp->hwqp.rq_tail = (wqe_index+1)&(nesqp->hwqp.rq_size - 1);
3728                                 if ((entry->status != IB_WC_SUCCESS) && (nesqp->hwqp.rq_tail != nesqp->hwqp.rq_head)) {
3729                                         move_cq_head = 0;
3730                                         wq_tail = nesqp->hwqp.rq_tail;
3731                                 }
3732                         }
3733
3734                         entry->wr_id = wrid;
3735                         entry++;
3736                         cqe_count++;
3737                 }
3738
3739                 if (move_cq_head) {
3740                         nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX] = 0;
3741                         if (++head >= cq_size)
3742                                 head = 0;
3743                         nescq->polled_completions++;
3744
3745                         if ((nescq->polled_completions > (cq_size / 2)) ||
3746                                         (nescq->polled_completions == 255)) {
3747                                 nes_debug(NES_DBG_CQ, "CQ%u Issuing CQE Allocate since more than half of cqes"
3748                                         " are pending %u of %u.\n",
3749                                         nescq->hw_cq.cq_number, nescq->polled_completions, cq_size);
3750                                 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3751                                         nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3752                                 nescq->polled_completions = 0;
3753                         }
3754                 } else {
3755                         /* Update the wqe index and set status to flush */
3756                         wqe_index = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3757                         wqe_index = (wqe_index & (~(nesdev->nesadapter->max_qp_wr - 1))) | wq_tail;
3758                         nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX] =
3759                                 cpu_to_le32(wqe_index);
3760                         move_cq_head = 1; /* ready for next pass */
3761                 }
3762         }
3763
3764         if (nescq->polled_completions) {
3765                 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3766                                 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3767                 nescq->polled_completions = 0;
3768         }
3769
3770         nescq->hw_cq.cq_head = head;
3771         nes_debug(NES_DBG_CQ, "Reporting %u completions for CQ%u.\n",
3772                         cqe_count, nescq->hw_cq.cq_number);
3773
3774         spin_unlock_irqrestore(&nescq->lock, flags);
3775
3776         return cqe_count;
3777 }
3778
3779
3780 /**
3781  * nes_req_notify_cq
3782  */
3783 static int nes_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags notify_flags)
3784                 {
3785         struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3786         struct nes_device *nesdev = nesvnic->nesdev;
3787         struct nes_cq *nescq = to_nescq(ibcq);
3788         u32 cq_arm;
3789
3790         nes_debug(NES_DBG_CQ, "Requesting notification for CQ%u.\n",
3791                         nescq->hw_cq.cq_number);
3792
3793         cq_arm = nescq->hw_cq.cq_number;
3794         if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_NEXT_COMP)
3795                 cq_arm |= NES_CQE_ALLOC_NOTIFY_NEXT;
3796         else if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
3797                 cq_arm |= NES_CQE_ALLOC_NOTIFY_SE;
3798         else
3799                 return -EINVAL;
3800
3801         nes_write32(nesdev->regs+NES_CQE_ALLOC, cq_arm);
3802         nes_read32(nesdev->regs+NES_CQE_ALLOC);
3803
3804         return 0;
3805 }
3806
3807 static int nes_port_immutable(struct ib_device *ibdev, u8 port_num,
3808                               struct ib_port_immutable *immutable)
3809 {
3810         struct ib_port_attr attr;
3811         int err;
3812
3813         err = nes_query_port(ibdev, port_num, &attr);
3814         if (err)
3815                 return err;
3816
3817         immutable->pkey_tbl_len = attr.pkey_tbl_len;
3818         immutable->gid_tbl_len = attr.gid_tbl_len;
3819         immutable->core_cap_flags = RDMA_CORE_PORT_IWARP;
3820
3821         return 0;
3822 }
3823
3824 /**
3825  * nes_init_ofa_device
3826  */
3827 struct nes_ib_device *nes_init_ofa_device(struct net_device *netdev)
3828 {
3829         struct nes_ib_device *nesibdev;
3830         struct nes_vnic *nesvnic = netdev_priv(netdev);
3831         struct nes_device *nesdev = nesvnic->nesdev;
3832
3833         nesibdev = (struct nes_ib_device *)ib_alloc_device(sizeof(struct nes_ib_device));
3834         if (nesibdev == NULL) {
3835                 return NULL;
3836         }
3837         strlcpy(nesibdev->ibdev.name, "nes%d", IB_DEVICE_NAME_MAX);
3838         nesibdev->ibdev.owner = THIS_MODULE;
3839
3840         nesibdev->ibdev.node_type = RDMA_NODE_RNIC;
3841         memset(&nesibdev->ibdev.node_guid, 0, sizeof(nesibdev->ibdev.node_guid));
3842         memcpy(&nesibdev->ibdev.node_guid, netdev->dev_addr, 6);
3843
3844         nesibdev->ibdev.uverbs_cmd_mask =
3845                         (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
3846                         (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
3847                         (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
3848                         (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
3849                         (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
3850                         (1ull << IB_USER_VERBS_CMD_REG_MR) |
3851                         (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
3852                         (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
3853                         (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
3854                         (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
3855                         (1ull << IB_USER_VERBS_CMD_CREATE_AH) |
3856                         (1ull << IB_USER_VERBS_CMD_DESTROY_AH) |
3857                         (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
3858                         (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
3859                         (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
3860                         (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
3861                         (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
3862                         (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
3863                         (1ull << IB_USER_VERBS_CMD_BIND_MW) |
3864                         (1ull << IB_USER_VERBS_CMD_DEALLOC_MW) |
3865                         (1ull << IB_USER_VERBS_CMD_POST_RECV) |
3866                         (1ull << IB_USER_VERBS_CMD_POST_SEND);
3867
3868         nesibdev->ibdev.phys_port_cnt = 1;
3869         nesibdev->ibdev.num_comp_vectors = 1;
3870         nesibdev->ibdev.dma_device = &nesdev->pcidev->dev;
3871         nesibdev->ibdev.dev.parent = &nesdev->pcidev->dev;
3872         nesibdev->ibdev.query_device = nes_query_device;
3873         nesibdev->ibdev.query_port = nes_query_port;
3874         nesibdev->ibdev.query_pkey = nes_query_pkey;
3875         nesibdev->ibdev.query_gid = nes_query_gid;
3876         nesibdev->ibdev.alloc_ucontext = nes_alloc_ucontext;
3877         nesibdev->ibdev.dealloc_ucontext = nes_dealloc_ucontext;
3878         nesibdev->ibdev.mmap = nes_mmap;
3879         nesibdev->ibdev.alloc_pd = nes_alloc_pd;
3880         nesibdev->ibdev.dealloc_pd = nes_dealloc_pd;
3881         nesibdev->ibdev.create_ah = nes_create_ah;
3882         nesibdev->ibdev.destroy_ah = nes_destroy_ah;
3883         nesibdev->ibdev.create_qp = nes_create_qp;
3884         nesibdev->ibdev.modify_qp = nes_modify_qp;
3885         nesibdev->ibdev.query_qp = nes_query_qp;
3886         nesibdev->ibdev.destroy_qp = nes_destroy_qp;
3887         nesibdev->ibdev.create_cq = nes_create_cq;
3888         nesibdev->ibdev.destroy_cq = nes_destroy_cq;
3889         nesibdev->ibdev.poll_cq = nes_poll_cq;
3890         nesibdev->ibdev.get_dma_mr = nes_get_dma_mr;
3891         nesibdev->ibdev.reg_phys_mr = nes_reg_phys_mr;
3892         nesibdev->ibdev.reg_user_mr = nes_reg_user_mr;
3893         nesibdev->ibdev.dereg_mr = nes_dereg_mr;
3894         nesibdev->ibdev.alloc_mw = nes_alloc_mw;
3895         nesibdev->ibdev.dealloc_mw = nes_dealloc_mw;
3896         nesibdev->ibdev.bind_mw = nes_bind_mw;
3897
3898         nesibdev->ibdev.alloc_mr = nes_alloc_mr;
3899         nesibdev->ibdev.map_mr_sg = nes_map_mr_sg;
3900
3901         nesibdev->ibdev.attach_mcast = nes_multicast_attach;
3902         nesibdev->ibdev.detach_mcast = nes_multicast_detach;
3903         nesibdev->ibdev.process_mad = nes_process_mad;
3904
3905         nesibdev->ibdev.req_notify_cq = nes_req_notify_cq;
3906         nesibdev->ibdev.post_send = nes_post_send;
3907         nesibdev->ibdev.post_recv = nes_post_recv;
3908
3909         nesibdev->ibdev.iwcm = kzalloc(sizeof(*nesibdev->ibdev.iwcm), GFP_KERNEL);
3910         if (nesibdev->ibdev.iwcm == NULL) {
3911                 ib_dealloc_device(&nesibdev->ibdev);
3912                 return NULL;
3913         }
3914         nesibdev->ibdev.iwcm->add_ref = nes_add_ref;
3915         nesibdev->ibdev.iwcm->rem_ref = nes_rem_ref;
3916         nesibdev->ibdev.iwcm->get_qp = nes_get_qp;
3917         nesibdev->ibdev.iwcm->connect = nes_connect;
3918         nesibdev->ibdev.iwcm->accept = nes_accept;
3919         nesibdev->ibdev.iwcm->reject = nes_reject;
3920         nesibdev->ibdev.iwcm->create_listen = nes_create_listen;
3921         nesibdev->ibdev.iwcm->destroy_listen = nes_destroy_listen;
3922         nesibdev->ibdev.get_port_immutable   = nes_port_immutable;
3923
3924         return nesibdev;
3925 }
3926
3927
3928 /**
3929  * nes_handle_delayed_event
3930  */
3931 static void nes_handle_delayed_event(unsigned long data)
3932 {
3933         struct nes_vnic *nesvnic = (void *) data;
3934
3935         if (nesvnic->delayed_event != nesvnic->last_dispatched_event) {
3936                 struct ib_event event;
3937
3938                 event.device = &nesvnic->nesibdev->ibdev;
3939                 if (!event.device)
3940                         goto stop_timer;
3941                 event.event = nesvnic->delayed_event;
3942                 event.element.port_num = nesvnic->logical_port + 1;
3943                 ib_dispatch_event(&event);
3944         }
3945
3946 stop_timer:
3947         nesvnic->event_timer.function = NULL;
3948 }
3949
3950
3951 void  nes_port_ibevent(struct nes_vnic *nesvnic)
3952 {
3953         struct nes_ib_device *nesibdev = nesvnic->nesibdev;
3954         struct nes_device *nesdev = nesvnic->nesdev;
3955         struct ib_event event;
3956         event.device = &nesibdev->ibdev;
3957         event.element.port_num = nesvnic->logical_port + 1;
3958         event.event = nesdev->iw_status ? IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
3959
3960         if (!nesvnic->event_timer.function) {
3961                 ib_dispatch_event(&event);
3962                 nesvnic->last_dispatched_event = event.event;
3963                 nesvnic->event_timer.function = nes_handle_delayed_event;
3964                 nesvnic->event_timer.data = (unsigned long) nesvnic;
3965                 nesvnic->event_timer.expires = jiffies + NES_EVENT_DELAY;
3966                 add_timer(&nesvnic->event_timer);
3967         } else {
3968                 mod_timer(&nesvnic->event_timer, jiffies + NES_EVENT_DELAY);
3969         }
3970         nesvnic->delayed_event = event.event;
3971 }
3972
3973
3974 /**
3975  * nes_destroy_ofa_device
3976  */
3977 void nes_destroy_ofa_device(struct nes_ib_device *nesibdev)
3978 {
3979         if (nesibdev == NULL)
3980                 return;
3981
3982         nes_unregister_ofa_device(nesibdev);
3983
3984         kfree(nesibdev->ibdev.iwcm);
3985         ib_dealloc_device(&nesibdev->ibdev);
3986 }
3987
3988
3989 /**
3990  * nes_register_ofa_device
3991  */
3992 int nes_register_ofa_device(struct nes_ib_device *nesibdev)
3993 {
3994         struct nes_vnic *nesvnic = nesibdev->nesvnic;
3995         struct nes_device *nesdev = nesvnic->nesdev;
3996         struct nes_adapter *nesadapter = nesdev->nesadapter;
3997         int i, ret;
3998
3999         ret = ib_register_device(&nesvnic->nesibdev->ibdev, NULL);
4000         if (ret) {
4001                 return ret;
4002         }
4003
4004         /* Get the resources allocated to this device */
4005         nesibdev->max_cq = (nesadapter->max_cq-NES_FIRST_QPN) / nesadapter->port_count;
4006         nesibdev->max_mr = nesadapter->max_mr / nesadapter->port_count;
4007         nesibdev->max_qp = (nesadapter->max_qp-NES_FIRST_QPN) / nesadapter->port_count;
4008         nesibdev->max_pd = nesadapter->max_pd / nesadapter->port_count;
4009
4010         for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
4011                 ret = device_create_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
4012                 if (ret) {
4013                         while (i > 0) {
4014                                 i--;
4015                                 device_remove_file(&nesibdev->ibdev.dev,
4016                                                    nes_dev_attributes[i]);
4017                         }
4018                         ib_unregister_device(&nesibdev->ibdev);
4019                         return ret;
4020                 }
4021         }
4022
4023         nesvnic->of_device_registered = 1;
4024
4025         return 0;
4026 }
4027
4028
4029 /**
4030  * nes_unregister_ofa_device
4031  */
4032 static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev)
4033 {
4034         struct nes_vnic *nesvnic = nesibdev->nesvnic;
4035         int i;
4036
4037         for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
4038                 device_remove_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
4039         }
4040
4041         if (nesvnic->of_device_registered) {
4042                 ib_unregister_device(&nesibdev->ibdev);
4043         }
4044
4045         nesvnic->of_device_registered = 0;
4046 }